How to calculate waste water. Calculation of the cesspool: volume, depth, diameter. Capacitive margin correction

Surface wastewater- wastewater generated on the surface of the earth due to precipitation and irrigation of the territory.

The flow rate of surface wastewater entering the water body is determined by the formula:

W ps \u003d W ji + W t + W floor,

where W ji is the annual amount of storm water, m3/year); W t - annual amount of melted wastewater, m3 / year; W floor, - the annual amount of irrigation and washing water, m3 year.

The annual volume of storm sewage is determined in accordance with the "Interim recommendations for the design of a structure for the treatment of surface runoff from the territory industrial enterprise"as the sum of rain (W d and melt (W t) water.

I. The annual volume of storm water is calculated using the formula:

W l \u003d H l U l F total,

where: H l - a layer of precipitation that fell during the warm period of the year. According to the data of the Hydrometeorological Center for the Moscow Region, the average annual amount of precipitation is 0.677 m, including about 70% of precipitation during the warm period, i.e. 0.474 m;

Table 2. Information about water sampling points. Water user: Mechanization Department branch of Mostelefonstroy OJSC

description point(s) control	Orientation coordinates (geographer.)	Distance from the coast, m	Sampling depth, m	Quantity parameters control		Sample type	sampling device	Frequency of control
T.1 Issue after OS in r. Moscow	NL 55°45"20" ID 37°28"05"		falling jet				capacitive sampler	Monthly Quarterly
T.2 Gate №1 R. Moscow, at the place of wastewater discharge	NL 55°45"20" ID 37°28"05"				Natural		capacitive sampler	Quarterly
T.3 Target №2 R. Moscow, above the sewage discharge	NL 55°45"20" ID 37°28"05"				Natural		capacitive sampler	Quarterly
T.4 Gate №3 R. Moscow, below the drop site	NL 55°45"20" ID 37°28"05"				Natural		capacitive sampler	Quarterly

Y l - coefficient of rainwater runoff. The value of U l is determined as a weighted average value for the entire catchment area, taking into account the average values of the runoff coefficient for various types of surfaces. The value of U l is taken within 0.6-0.8 for waterproof coatings (roofs, asphalt coatings) and 0.1 for permeable (lawns):

Fotot - total area catchment basin, m²

W ji \u003d 0.474 0.69031 15980 \u003d 5228.767 m3 / year

2. The annual volume of melted wastewater is determined by the formula:

W t \u003d H t Y t F total,

where H t is the layer of precipitation that fell during the cold period of the year. According to the Hydrometeorological Center for the Moscow Region, the average annual amount of precipitation is 0.677 m, including about 30% of precipitation during the cold period, i.e. 0.203 m

Y t is the coefficient of melt water runoff. The value of Y t is taken within 0.5 - 0.7;

Ftot - total area of the catchment basin, m²

W t \u003d 0.203 0.6 15980 \u003d 1946.364 m 3 year

3. The annual volume of irrigation water is calculated as the sum of the products of the irrigation rate by the size of the irrigated area, taking into account the coefficient of runoff from this territory and the number of irrigations during the year

W floor \u003d m K F floor U st,

where m - water consumption for one irrigation pavement, equal to 1.2 10 -3 m3 m² during mechanized watering and washing works on asphalt pavements of driveways; K - the average number of irrigations per year, equal to 100 for middle lane; F floor - area of irrigated territory (area asphalt pavement= 9861 m²); Y st - runoff coefficient, taken equal to 0.5.

W floor \u003d 1.2 10 -3 100 9861 0.5 \u003d 591.66 m 3 year

The results of calculations of the annual amount of surface wastewater on the territory of the enterprise are summarized in Table 3.

Table 3 - Results of calculations of the annual amount of surface wastewater

In addition, process wastewater enters the storm sewer network.

The annual volume of process wastewater is equal to:

where P is the volume of process water discharged into storm sewer daily, m3; 365 is the number of days in a year.

W m \u003d 11.22 365 \u003d 4095.3 m3 / year

The annual volume of surface industrial wastewater is equal to

Q \u003d W ps + W m \u003d 7766.791 + 4095.3 \u003d 11862.091 m3 / year

To calculate the MPD, the value of the annual volume of wastewater discharged onto the relief of the water intake area of the river was taken. Moscow, equal to 11.862 thousand m3.

The calculation of the maximum allowable discharge of pollutants is based on the maximum hourly flow of wastewater.

The design capacity of the post-treatment unit "Volna" is 72.0 m3/day or 3.0 m3/hour.

According to the installation passport, its peak productivity is 17.0 m3/hour, therefore, to calculate the MPD, the value of the maximum hourly productivity of the installation was taken as the maximum hourly flow rate of production and surface wastewater, i.e. 17 m3/hour.

The maximum allowable discharge of pollutants coming with industrial and storm sewage into the river. Moscow with an approved wastewater flow rate of 17 m3/hour, 11862 m3/year is:

The calculation of the MPC of pollutants was carried out taking into account the MPC for fishery reservoirs.

The volume of wastewater is determined by the formula:

where - the calculated volume of wastewater, cubic meters;

Waste water consumption, taken depending on the diameter of the pipe, l / s;

Duration of use of public sewerage systems, hours;

Coefficient taking into account the filling of pipes:

For household sewer network;

For a common sewer network;

For rain sewer network.

Wastewater flow rates should be calculated based on the minimum (non-silting) velocities (according to the Shezy and N.N. Pavlovsky formulas) as follows:

;

where is the roughness coefficient, taken equal to 0.013;

Hydraulic radius taken equal to d/4, m;

Pipe diameter, m

Wastewater flow rates (l/s) for different diameters pipes, take according to table 1, where the values are calculated with the recommended SNiP 2.04.03.-85 "Sewerage, external networks and structures".

Values for different when the pipe is completely filled:

Appendix 4

Methodology for calculating the volumes of watering effluents entering the municipal sewerage systems during washing (watering) of streets, driveways, squares, etc.

The calculation of the volumes of irrigation water is used only when concluding agreements between the WSS Organization and subscribers whose type of activity, in accordance with the constituent documents, is the washing and watering of territories owned by St. Petersburg.

The volume of irrigation water entering the municipal sewerage system is determined by the formula:

where is the area of washing (watering), ha;

The number of washes (waterings) for the period under review;

1.5 l / sq.m - the rate of washing (watering);

Runoff coefficient.

Reception of watering drains occurs in the period April-October.

Approximate form

The act of delimitation of responsibility of the parties for sewerage networks n ____ dated "_" ___________

District __________________

Subscriber (code_________/_____) Company details

(full name and address of the Subscriber)

_____________________________________________

We, the undersigned, representatives of the Subscriber ___________________________________

_____________________________________________________________________________

(position, full name of the representative of the Subscriber)

on the one hand, and State Unitary Enterprise "Vodokanal SPb", on the other ____________________________________

______________________________________________________________________________

(position, full name of the representative of SUE "Vodokanal of St. Petersburg")

drew up this act stating that after inspecting the Subscriber's sewer network connected to the communal sewerage system, the boundaries of responsibility for sewerage networks were established and control wells were identified:

Release address	N count. at the connection point.	N control. well	Characteristics of the wastewater receiver
			type of sewerage. networks (gen., everyday life, rain)	Network diameter	Network owner	sewer pool

Official

electronic text

IPS "Code"

Revision of the document, taking into account

changes and additions

on the calculation of the quantity and quality of wastewater and pollutants received into the sewerage systems of settlements

MDK 3-01.2001

APPROVED by order of the Gosstroy of Russia of 04/06/2001 N 75

1. General Provisions

1.1. Guidelines for calculating the quantity and quality of wastewater and pollutants received into the sewerage systems of settlements (Methodological recommendations) are an instructive and methodological document developed on the basis of the "Rules for the use of public water supply and sewerage systems in Russian Federation"approved by Decree of the Government of the Russian Federation of February 12, 1999 N 167) and are being introduced to replace the current "Rules for the acceptance of industrial wastewater into the sewerage systems of settlements" (Ed. 5, add., 1989).

Ensuring trouble-free operation of structures and sewerage systems locality(prevention of silting, oiling, clogging of pipelines, aggressive influence on the material of pipes, wells, violation of the technological regime of cleaning), as well as their protection from the harmful effects of pollutants contained in wastewater;

Ensuring the safe operation of networks and sewerage facilities, protecting the life and health of the population and service personnel water supply and sewerage organizations (WSS);

Systematic implementation of measures to reduce the discharge of wastewater and pollutants for each subscriber connection to the sewerage systems of the settlement;

Rational use and protection of water bodies from pollution.

1.4. Wastewater admitted to the sewerage systems of settlements must comply with the established standards for wastewater disposal in terms of volume and quality.

Development and approval of local Conditions for the reception of pollutants in the wastewater of subscribers discharged into the sewerage systems of settlements (hereinafter referred to as the Conditions);

Establishing water disposal limits for subscribers of sewerage systems in settlements;

Control of the composition and properties of wastewater from subscribers discharged into the sewerage systems of settlements.

1.6. The conditions for the reception of pollutants in the wastewater of subscribers discharged into the sewerage systems of settlements are developed by the WSS organizations and / or other organizations directly operating the sewerage systems of settlements, and / or on their behalf - contractors, and approved by the authorities local government(for subjects of the Russian Federation cities of Moscow, St. Petersburg - executive authorities).

2. Basic concepts

water body - the concentration of waters on the surface of the land in the forms of its relief or in the bowels, having boundaries, volume and features of the water regime;

maximum allowable discharge (PDS) - maximum amount pollutants and general properties of wastewater permitted by the WSS organization by a specially authorized state body for managing the use and protection of the water fund for discharge into a water body;

general properties of wastewater - a set of physical, chemical, organoleptic, biochemical and other properties of wastewater;

maximum permissible concentration (MAC) - the concentration of substances above which water is not suitable for one or more types of water use GOST 27065-86;

discharge permit (PC) of pollutants - approved by the WSS organization to the subscriber permits on the quality of wastewater accepted into the sewerage system of the settlement;

permissible concentration (DC) - the maximum amount of pollutants per unit volume of wastewater, permitted by the WSS organization as part of the PC of pollutants;

normative indicator (NP) common properties waste water - the limit value of the general properties of waste water, permitted by the WSS organization to the subscriber as part of PC pollutants;

suspended solids - the bulk of water-insoluble contaminants, which, depending on the size of individual particles and their density, can precipitate, float to the surface of the water or remain in suspension;

temporarily agreed concentration (TAC) - the maximum amount of pollutants per unit volume of wastewater, temporarily permitted to the WSS organization by a specially authorized state body for managing the use and protection of the water fund for discharge into a water body;

temporary allowable concentration (TDC) - the maximum amount of pollutants per unit volume of the subscriber's wastewater, temporarily allowed by the WSS organization to be discharged into the sewerage system of a settlement as part of temporary conditions for the reception (TRP) of pollutants;

temporarily permissible indicator (TAP) - an indicator of the general properties of wastewater, temporarily permitted by the WSS organization to the subscriber as part of the TRP of pollutants;

Temporary acceptance conditions (TRP) of pollutants contain a list of temporary allowable concentrations (TDC) of pollutants and temporary allowable indicators (TDP) of general properties of subscribers' wastewater;

volley discharge - discharge of sewage with an excess of more than 100 times the DK for any type of pollution, as well as the discharge of aggressive runoff with a pH of less than 2 or more than 12;

uncoordinated discharge - discharge of pollutants by the subscriber without approval of the discharge permit (PC) by the WSS organization;

water disposal limit - the maximum volume of wastewater allowed by the subscriber to be discharged into the sewerage system.

3.1. The main goals of limiting water disposal are:

Elimination of overload of networks and structures of sewerage systems due to reduction by subscribers of rational use water, unjustified discharge of sewage;

Reduction of operating costs for the maintenance of sewerage systems;

Ensuring reliability, uninterrupted operation sewer systems.

3.2. Water discharge limits are set for all categories of subscribers that discharge wastewater into the sewerage systems of settlements, with the exception of subscribers exempt from charging fees for excess discharge of wastewater and pollutants in accordance with local regulations;

Note: The assignment of the subscriber to the number of those exempted from charging for excess discharge of wastewater and pollutants is made by the decision of local authorities (for the constituent entities of the Russian Federation, the cities of Moscow, St. and pollutants concluded between the WSS organization and the subscriber.

3.3. If the subscribers have sub-subscribers (in accordance with the concluded agreements), the water discharge limit set for the subscriber includes the water discharge limits of sub-subscribers.

3.4. The volume of sewage of the subscriber (including sub-subscribers) is subject to the limitation of water disposal after the use of water from all sources of water supply (drinking, artesian, hot, technical water supply, steam from the heat supply organization and others) minus the actual or standard volume of waste water from the objects of subscribers (sub-subscribers), exempt from charging fees for excess discharge of wastewater and pollutants in accordance with local regulations.

3.5. Water disposal limits are set based on the conditions for the rational use by subscribers (sub-subscribers) of water from all sources of water supply (drinking, artesian, hot, technical water supply, steam from a heat supply organization, and others), taking into account:

Technical possibilities for receiving wastewater into sewerage systems;

Implementation by subscribers (sub-subscribers) of planned measures to reduce the discharge of wastewater and pollutants.

3.6. The rational use by the subscriber (sub-subscriber) of water from all sources of water supply should ensure that there is no discharge into the sewerage system:

Leaks due to malfunctioning water shut-off valves, violations technological regulations operation of equipment, instruments, production processes;

Wastewater suitable for use in recycled technological cycles, including with a device treatment facilities;

Wastewater that can be excluded in the transfer production technologies for low-water and drainless processes.

3.7. In order to establish technically justified water discharge limits for subscribers, the subscriber develops, submits and agrees with the WSS organizations the following technical documentation for water disposal:

Water management balance calculation, substantiating the rational use of water and wastewater discharge into the sewerage systems of a settlement with the calculation of water discharge limits (hereinafter referred to as the water management balance calculation) in an approximate form in accordance with Appendix 1;

Plan of water protection measures to reduce the irrational use of water, discharge of wastewater and pollutants (hereinafter referred to as the plan of water protection measures) in an approximate form in accordance with Appendix 2.

3.8. The documentation under clause 3.7 is developed by the subscriber independently or on behalf of the subscriber by a contracting organization that has licenses to perform design work for water supply and sewerage, or special sections on environmental protection.

The WSS organization is obliged to check the water management balance together with the subscriber at the place of production and draw up an appropriate act.

3.9. The development of a water management balance calculation and a plan for water protection measures is carried out as follows:

Section I of the water management balance calculation is filled in by the subscriber if he or the sub-subscriber has facilities that are exempt from charging fees for excess discharge of wastewater and pollutants into the sewerage systems of settlements (see note to clause 3.2).

At the same time, section I of the water management balance calculation indicates the standard volumes of water disposal of these objects, determined according to the current norms of SNIP 2.04. the number of students working, from the established plumbing equipment, according to the passports for the installed technological equipment.

3.10. In the event that the sub-subscriber is completely exempted from charging fees for exceeding the limit of wastewater discharge into sewerage systems (in accordance with the terms of the contract), the water disposal limit is set only for the subscriber of sewerage systems. At the same time, in section I of the water management balance of the calculation, the subscriber makes a corresponding reference to the contract.

3.11. Section II of the water management balance calculation and section I of the plan for water protection measures are filled in by the subscriber if he has a sub-subscriber (as agreed with the latter).

3.12. Section III of the water management balance calculation is filled in by the subscriber for the use of water and the discharge of wastewater from his own needs.

3.13. The water protection plan must ensure the effectiveness of reducing the volume of water disposal of the subscriber through the introduction of water protection measures (taking into account sub-subscribers - if any), with the achievement of rational use of water in accordance with clause 3.7.

3.14. The WSS organization, having considered the presented water management balance calculations (as compared with the actual situation), as well as plans for water protection measures and determining the possibility of their coordination, agrees on the water disposal limit as part of the water management balance calculations (with a phased breakdown by years according to the timing of the implementation of water protection measures according to the plan).

3.15. If it is necessary to verify the reliability of the submitted materials (due to discrepancies with accounting data for actually discharged wastewater, previously agreed water management balances, water management passports, plans, etc.), the WSS organization conducts a survey of the subscriber's water management activities with the preparation of an appropriate survey report.

3.16. The WSS organization has the right to reject the documents under clause 3.8 from approval in case of inconsistency of the water management balance calculation data submitted by the subscriber:

Current standards of water consumption and sanitation, indications of measuring instruments, equipment;

The act of inspection of water management activities according to clause 3.15;

Inaccuracies in calculating the limits of water disposal.

3.17. The term for consideration of the submitted documentation under clause 3.8 is 15 days. The term can be extended up to 30 days in case of need for additional examination and a large amount of documentation submitted for approval to the WSS organization.

3.18. The period of validity of the approval of documents under clause 3.8 is until the change in the water management balance of the subscriber (sub-subscriber), but not more than 3 years. The subscriber must notify the WSS organization about maintaining the water management balance two weeks before the deadline for setting the limit for the subscriber.

3.19. Subscribers who have changed the actual volume of wastewater discharge have the right to apply to the WSS organization within 2 weeks before the establishment of the water discharge limit for adjustment with the submission of supporting documents and calculations.

3.20. If the subscriber fails to submit or expires the technical documentation under clause 3.18 (which predetermines the impossibility of setting technically justified water discharge limits for him), the limits are initially set at the level of 80-90% of the total volume of wastewater actually discharged by the subscriber (sub-subscriber) over the past year, from their further reduction in the event of a systematic failure by the subscriber to submit technical documentation, to the consumption of wastewater from household needs.

3.21. Subscriber Compliance Monitoring established limits water disposal is carried out by the WSS organization within the established timeframe by reconciliation with the total volume of wastewater actually discharged by the subscriber (including sub-subscribers).

3.22. Control over the rational water disposal of sub-subscribers and compliance by sub-subscribers with the established water discharge limits is carried out by the subscriber.

wastewater subscribers

Prevention of environmental pollution;

Ensuring trouble-free and safe work networks and sewerage facilities;

Ensuring the standards for the discharge of pollutants into water bodies established by the WSS organizations.

4.2. Rationing the quality of wastewater discharged by subscribers into the sewerage systems of settlements is based on the following fundamental principles:

The need to comply with the values of permissible concentrations of pollutants and the general properties of wastewater at the outlet (s) of sewerage systems of settlements, established by a specially authorized state body for managing the use and protection of the water fund;

Accounting for the actual parameters of wastewater treatment at sewage treatment plants;

Taking into account the requirements for the protection of networks and structures of the sewerage system, based on the requirements for the regulations for their operation (prevention of silting, greasing, blockage of pipes, aggressive influence on the material of pipes, wells, equipment, as well as ensuring the technological regime of cleaning);

Accounting for the actual quality of domestic wastewater of subscribers who own or manage the housing stock (hereinafter referred to as housing stock subscribers);

Definitions of uniform regulatory requirements to the quality of wastewater discharged by subscribers to the sewerage system, differentiated:

For subscribers who own or manage the housing stock;

For other subscribers.

4.3. Water disposal standards for the quality of wastewater from subscribers are developed for each settlement in accordance with approved local conditions.

4.4. The terms must contain:

Normative indicators of the general properties of wastewater accepted into the sewerage system of a settlement;

General list and standards of permissible concentrations of pollutants in wastewater received from subscribers into the sewerage system of a settlement;

List of substances prohibited for discharge into the sewerage systems of a settlement;

The procedure for issuing (approving) a permit for the discharge of pollutants.

4.5. Regulatory indicators (NP) of the general properties of wastewater accepted into the sewerage systems of settlements are set uniform for wastewater of all categories of subscribers, based on the requirements for the protection of networks and structures of sewerage systems, namely:

wastewater temperature 40°;

6,5 < pH < 8,5

dilution factor at which the color disappears

in a column of 10 cm 1: 11

COD: BOD 2.5*

COD: BOD 1.5*

* for subscribers (sub-subscribers), whose wastewater has not been subjected to preliminary biological treatment at local facilities.

total mineralization of 1000 mg/l when discharged into a water body for drinking and domestic water use;

when discharged into a water body for fishery use in accordance with the toxification of a fishery water body;

suspended solids 200-400 mg/l depending on the hydraulic regime of the network;

sulfides 1.5 mg/l - to prevent the destruction of the network.

Other general indicators of wastewater accepted into the sewerage systems of populated areas (BOD, COD) are established when designing treatment facilities.

4.6. The list and standards of permissible concentrations of pollutants in wastewater received from subscribers into the sewerage systems of settlements are established based on:

4.6.1. List of substances removed in the process of biological treatment, indicating their limiting sign of hazard (LPH), permissible concentration for biological treatment, achieved removal efficiency and MPC in the water of water bodies (Appendix 3);

4.6.2. List of pollutants not removed during biological treatment (Appendix 4);

4.6.3. The list of substances prohibited from being discharged into the sewerage system of a settlement in order to ensure trouble-free operation of networks and structures of sewerage systems (prevention of silting, greasing, blockage of pipelines, aggressive influence on the material of pipes, wells, equipment, violations of the technological regime of cleaning), ensuring the health of personnel, serving the sewerage system (Appendix 5).

Along with the pollutants and materials specified in Appendix 5, it is prohibited to discharge into the sewerage systems of a settlement sewage of subscribers, characterized by an excess of more than 100 times the DC for any type of pollution and high aggressiveness (2 > pH > 12);

4.6.4. Average characteristics of the quality of domestic wastewater discharged by subscribers of the housing stock (Appendix 6);

4.6.5. Estimates of local conditions for water disposal in terms of compliance with MPD standards at outlets of sewerage systems of settlements into water bodies.

4.7. It is recommended to calculate the DK standards for pollutants in wastewater discharged by subscribers to the sewerage systems of settlements that have treatment facilities at outlets to a water body as follows:

4.7.1. As a first approximation, the actual average concentration of the pollutant in the composition of the domestic wastewater runoff of housing stock subscribers, or

(1)

Average actual concentration of a pollutant in domestic wastewater discharged by housing stock subscribers (mg/l). Set based on average measurement data quality composition and properties of wastewater received into the sewerage system of a settlement from subscribers of the housing stock.

In the absence of measurement data on the quality of the composition of domestic wastewater, averaged data on the concentrations of pollutants in wastewater from housing stock subscribers can be taken according to those given in Appendix 6.

4.7.2. The main calculation formula for determining the standards for permissible concentrations of pollutants in wastewater from other subscribers (DKpr) is:

(2)

Estimated value of the permissible concentration of a pollutant in wastewater discharged by other subscribers to the sewerage system (mg/l);

Annual consumption of wastewater entering the treatment plant, (thousand m / year);

Annual wastewater consumption of other subscribers (including the consumption of surface and drainage wastewater (thousand m3/year) with a combined system);

Permissible concentration of a pollutant in wastewater from a settlement entering treatment facilities (mg/l);

Permissible concentration of a pollutant in wastewater, established on the basis of the condition for preventing silting and aggressive impact on public sewerage networks (mg/l). is accepted according to clause 4.5 of these methodological recommendations, according to indicators: temperature, total mineralization, suspended solids and sulfides.

The limit values of other pollutants that have or may have a silting, aggressive effect on the sewer network (sulphates, chlorides, fats, etc.) are set taking into account local specifics based on data from reference literature or scientific research.

The calculation of the standard is carried out in two stages:

The first step in the calculation is to determine the value of .

The value is assigned according to the smallest value for a particular pollution compared, or:

Theoretically possible concentration of a pollutant in the composition of wastewater from a settlement, which does not adversely affect the technological mode of operation of biological treatment facilities (mg/l);

Estimated permissible concentration of a pollutant in wastewater entering the sewage treatment plant, based on the conditions for ensuring the standard quality of wastewater discharged into a water body (mg / l) (i.e. indicators approved as part of the MPD, approved by a specially authorized state body management of the use and protection of the water fund).

, (4)

The normative value of the concentration of a pollutant approved by a specially authorized state body for managing the use and protection of the water fund as part of the MPD at the outlet of the sewerage system of a settlement into a water body (mg/l);

Efficiency of purification (retention) of the pollutant removed at the treatment facilities of the settlement (%). Accepted according to Appendix 3.

For those pollutants for which the MPC has not been established in a water body and there are no MPC standards in the water of reservoirs (for example, fats), but which require rationing in order to ensure the normal operation of facilities and are present in the wastewater of subscribers, the value is taken as . In the absence of data on the entry of such substances into the sewerage system of settlements is prohibited.

In cases where pollutants that are not removed are present in the wastewater of subscribers (Appendix 4), their permissible concentration () should be at the level of their MPC in the water of the water body of the corresponding type of use. In the absence of data on MPC, the entry of such pollutants into the sewerage systems of settlements is prohibited.

At the second stage of the calculation, the values for each ingredient are calculated according to the formula (2).

4.7.3. In those cases when, when calculating the standards using formula (2), the values \u200b\u200bare obtained, the standards for permissible concentrations of pollutants in the wastewater of other subscribers at the discharge into the sewerage system are set at the level of the values \u200b\u200bof the permissible concentrations in the wastewater of the settlement entering the treatment plant accepted in the calculations , i.e.

if this results in less than the actual maximum concentration in drinking water (), then it is taken equal to .

Accordingly, since the values of , at the same time for the same indicator, the quality of household runoff of subscribers of the housing stock is normalized at the same level as , namely:

If the WSS organization, when compiling state statistical reports in accordance with Form 2 TP-vodkhoz, takes into account the correction for background pollution of the facility, and if, when calculating the discharge standards for DKpr, it turns out that it is less than the actual maximum concentration in drinking water (Spit.) at points according to work program production quality control drinking water(agreed by the bodies of the State Sanitary and Epidemiological Supervision), then DKpr is taken equal to Spit.

4.7.4. The values of the DC standards obtained by calculation should be analyzed by the WSS organization from the point of view of assessing the compliance of the WSS organization with the established MPDs (MPCs) for discharges into water bodies. In the event that a reserve is identified between the actual discharge and the approved MPD at the outlet into the water body, the WSS organization has the right to set an increased standard for subscribers based on the actual conditions of water disposal and ensuring the protection of networks and sewerage facilities from a negative impact on their mode of operation.

4.7.5. DC values are accepted with rounding at the calculated value:

4.7.6. Examples of calculations of DC standards for pollutants for subscribers are presented in Appendix 7.

4.8. In the absence of treatment facilities in the sewerage system of a settlement, the calculation of the standards for pollutants in wastewater discharged by subscribers is carried out according to formulas (1), (2) and (5), while the value is determined by the formula:

(6)

economy is carried out (by order of specially authorized bodies in the field environment) toxicological control of the quality of succulent waters, and the results of this control fix the toxicity of wastewater entering the treatment facilities of the municipal sewerage system (or at the outlet into a water body) of the above-established limit standards, - the standard level (category) of toxicity of wastewater from subscribers is calculated. The calculation is carried out similarly to the calculation of the pollutant standards for pollutants (with the exception of the correction for - see clause 4.7.3). The degree of reduction of wastewater toxicity in urban sewer facilities taken into account according to wastewater monitoring data before and after communal facilities.

4.9. The establishment of water disposal standards for the quality of wastewater for a specific subscriber is carried out by the WSS organization as part of the permissible discharge of pollutants.

The grounds for establishing a permit for a subscriber to discharge (PC) pollutants in wastewater are:

Approved by local authorities (or executive authorities of the constituent entities of the Russian Federation) Conditions for the reception of pollutants in wastewater discharged by subscribers into the sewerage system of a settlement;

The act of delimitation of responsibility between the subscriber and the organization of the WSS for sewerage networks;

The results of the analytical measurement of the composition and properties of the subscriber's wastewater, performed according to the full list of pollutants regulated in the Terms by a specialized laboratory (organization) accredited for technical competence in the field of wastewater analysis in accordance with the rules established by the State Standard of Russia.

4.10. The subscriber's PC contaminants must contain:

Normative indicators of the general properties of wastewater discharged by the subscriber (including sub-subscribers);

The list of permissible concentrations of pollutants in wastewater discharged by the subscriber (including sub-subscribers), differentiated by sewage basins of treatment facilities and sewerage systems;

List of substances prohibited for discharge into the sewerage system.

4.11. Draft permits for the discharge of pollutants in the wastewater of subscribers discharged into the sewerage systems of settlements are developed by the subscriber in accordance with the requirements of the Conditions in an exemplary form in accordance with Appendix 8 to these Instructions and submitted to the WSS organization for approval.

4.12. The period of validity of PC pollutants is determined by the WSS organization.

4.13. WSS organizations are granted the right to establish for subscribers performing water protection measures to reduce pollutant discharges, temporary conditions for receiving pollutants (TRP) based on the technical and technological feasibility of sewerage systems, as well as limits for temporarily agreed discharges (VSS) for outlets of sewerage systems of a settlement in water objects.

4.14. The procedure for the establishment of pollutants for the subscribers of the VUP is determined by the organization of the WSS.

4.15. Calculation of the excess fee established norms DC is produced in the manner prescribed by the Government of the Russian Federation.

discharged by subscribers to the sewerage systems of settlements

5.1. General provisions

5.1.1. The main purpose of monitoring the composition and properties of wastewater discharged by subscribers to the sewerage systems of settlements is to comply with the established water disposal standards for quality, as well as temporary conditions for the reception (TRP) of pollutants.

5.1.2. Control of the composition and properties of wastewater from subscribers includes:

Waste water sampling;

Delivery of selected samples to analytical laboratories;

Analytical measurements of the composition and properties of wastewater;

Preparation of the necessary documentation.

5.2. Organization of work to control the composition and properties of wastewater from subscribers

5.2.1. The WSS organization controls the composition and properties of the subscriber's wastewater. The frequency of planned monitoring of the composition and properties of the subscriber's wastewater is established by the WSS organization individually for each subscriber, depending on the results of the previous chemical control, the implementation of water protection construction plans, but at least once a year.

5.2.2. The list of monitored indicators of the composition and properties of the subscriber's wastewater is determined by the WSS organization in accordance with the permit approved by the WSS organization for the discharge (PC) of pollutants in the wastewater of subscribers and / or the established temporary acceptance conditions (TRP) of pollutants.

5.2.3. Unscheduled control of waste water of subscribers is carried out:

In case of emergency discharges of pollutants through the sewerage systems of settlements into water bodies;

In case of emergency (volley) discharges of pollutants into the sewerage systems of settlements registered by the operational services of the WSS organization;

In order to verify that the subscriber has eliminated the excess of water disposal standards for wastewater quality, recorded during the previous control;

When the actual quality of wastewater discharged into water bodies from sewerage systems exceeds the established, specially authorized government bodies, limits on wastewater discharge (taking into account the deviations agreed by these authorities from the average statistical values of wastewater quality for discharge into water bodies);

In order to verify the accuracy of the lists of pollutants declared by the subscriber in the composition of the DS and / or VUP, as well as in other documents submitted by the subscriber;

Approval by specially authorized state bodies of additional indicators as part of the limits for discharge into water bodies and laboratory control schedules for nature management facilities of the WSS organization;

At the request of the subscriber. In this case, the work to control the composition and properties of wastewater is paid by the subscriber in full.

5.2.4. In the event of exceptional circumstances ( natural disasters, ecological disasters, emergency discharges, etc.) the WSS organization conducts, if necessary, extraordinary control of the composition and properties of wastewater at any necessary control points and at any time.

5.2.5. The analysis of the subscriber's wastewater samples is carried out by the laboratory of the WSS organization or any other laboratory (organization) accredited for technical competence and independence in the field of wastewater analysis according to the rules established by the State Standard of Russia (hereinafter referred to as the analytical laboratory), which is responsible for the safety of samples (with the moment of registration of the delivered sealed samples), the quality of the analytical measurements, the presentation of the results of the analysis and compliance with safety regulations.

5.2.6. Works to control the composition and properties of wastewater from subscribers are carried out in accordance with the procedure approved by local authorities (for the constituent entities of the Russian Federation - by executive authorities), and in the absence of the above procedure - in accordance with GOST R 51592-00, certified methods for performing measurements and other normative documents.

5.3. Production of sampling works

5.3.1. The place for sampling the subscriber's wastewater during planned monitoring of the composition and properties of wastewater is a control well in the sewerage system of a settlement or another place for sampling wastewater at the outlet of the subscriber, determined by agreement between the subscriber and the WSS organization and allowing to take into account the impact of wastewater from sub-subscribers.

5.3.2. Sampling of the subscriber's wastewater is carried out at any time of the day without prior notice to the subscriber.

5.3.3. If the subscriber has automatic samplers, when taking samples to control the composition and properties of wastewater, it is necessary to follow the instructions for using these samplers. Make sure that this sampler has the appropriate certificate or certificate of use for sampling wastewater for controlled contamination levels.

If the subscriber does not have automatic samplers to control the composition and properties of the subscriber's wastewater, a point (one-time) control sample is taken by taking the amount of wastewater necessary for the production of chemical analysis.

5.3.4. Vessels are used for sampling wastewater, which should ensure the safety chemical composition of the investigated water, as well as to exclude additional contamination of the sampled water.

5.3.5. The volume of samples taken should be sufficient to carry out the necessary analytical measurements on controlled indicators of water pollution.

5.3.6. The sample should be taken on the straight sections of the drainage devices, from the tray sewer well or falling jet.

5.3.7. Based on the results of sampling work on site, a sampling report is drawn up (Appendix 10). If it is impossible to take wastewater samples due to the discharge of pollutants prohibited from being discharged into the sewerage system of a settlement, a protocol is drawn up on site for detecting the discharge of pollutants prohibited from being discharged into the sewerage system (Appendix 9). The protocol and the act must be signed by representatives of the WSS organization and the subscriber indicating the position and surname. The second copies of the protocol and act remain with the subscriber.

If the subscriber disagrees with the content of the protocol and / or act, the subscriber is obliged to sign them indicating his objections to the claims. If the subscriber refuses to sign these documents, they come into force unilaterally with the mark "refused to sign".

5.3.8. In the case of parallel* sampling of wastewater, the fact of parallel sampling is recorded in the act. The subscriber pays in advance the costs of the WSS organization associated with parallel sampling, according to the price list approved by the WSS organization.

5.4. Production of works on storage and delivery of selected samples

5.4.1. The glassware in which the samples are stored and transported must be marked in a way that excludes the possibility of marking violations.

The fact of preparation and transfer by the laboratory of clean glassware for sampling is recorded in a special journal. The laboratory is responsible for the preparation of glassware.

Sampling and storage for measurements of BOD, COD, mercury, oil products, fats, phenols, hydrocarbons and other organic substances, dissolved gases is carried out only in glassware.

5.4.2. The sampling report must state:

Name, code of sampling site;

Date and time of the start and end of sampling;

Number (code) of the bottle (container);

List of controlled indicators of pollutants in water;

Measures taken to preserve the samples taken;

Position, surname and signature of the responsible person of the WSS organization and the subscriber who participated in the sampling;

The name of the laboratory.

5.4.3. The time of delivery of samples to the laboratory is indicated in the act of sampling or in a special register for receiving wastewater samples.

5.4.4. When storing wastewater samples, it is necessary to strictly observe the permissible storage periods * specified in the certified measurement procedures, and in the absence of such information in the procedures - specified in GOST R 51592-2000.

* Without special preservation of samples, their storage time depends on the ambient temperature and ranges from 2 hours at 20 °C to 24 hours at 4 °C. Overheating and overcooling of samples is not allowed, i.e. storage of samples for more than 0.5 hours at temperatures below -15 °C and above +30 °C.

5.4.5. In the case of parallel sampling of wastewater, the characteristics of the glassware for storing samples used by the subscriber must also be reflected.

Responsibility for the preparation and cleanliness of the sample storage and delivery utensils, sample mixing container and mixing device provided by the subscriber for parallel sampling lies with the laboratory involved by the subscriber for the chemical analysis of the "parallel" sample.

5.4.6. The WSS organization and the subscriber (in the case of parallel sampling) must ensure the conditions for the safety of samples when they are delivered to the laboratory by any accessible way(including by sealing and/or sealing samples).

5.4.7. Delivery of wastewater samples is carried out by any permitted mode of transport that ensures the safety of samples. Delivery must be organized in such a way as to prevent overheating of the sample. It is recommended to use devices that ensure the storage of samples at a temperature of 2-5 °C.

5.5. Conducting analytical work

5.5.1. The analytical laboratory records (registers) delivered sealed samples.

From this moment on, the laboratory is responsible for the safety of samples and the quality of analytical measurements.

5.5.2. Analytical laboratory conducts necessary work in accordance with regulatory documents and methods for performing measurements (MVI) of the composition and properties of wastewater. The determination of the content of metal ions is carried out by transferring them from a natural sample into soluble forms.

5.6. Formulation of analysis results

5.6.1. The results of the analysis are issued on the letterhead of the analytical laboratory (organization) that performed analytical measurements of the composition and properties of wastewater samples signed by the head of the laboratory (organization) indicating:

Name and legal address of the laboratory (organization);

Date and time of delivery of samples and issuance of analysis results;

The name (code) of the controlled object and the number of the sampling report;

List of analyzed indicators;

The measured values of these indicators.

5.6.2. When drawing up a protocol of the results of analysis of wastewater samples (Appendix 11), the laboratory rounds off the values of these results in accordance with regulatory documents.

5.6.3. If the protocol of the results of the analysis by the laboratory presents data on the analyzed indicators, the values of which are less than the lower limit of measurement of the applied analysis methodology (< ), при дальнейшем уведомлении абонента о результатах анализа организация ВКХ такой результат анализа принимает за "ноль" (отсутствие).

5.7. Resolution of disputes based on the results of the analysis

If the results of sample analyzes, taking into account the metrological characteristics of the analysis methods, differ, the results obtained in an independent certified and (or) accredited organization (laboratory) are taken as the true value.

If both laboratories are certified and (or) accredited, then the subscriber has the right to apply to the accreditation body, which, based on the appropriate verification of the results of the analyzes of these laboratories, makes the final decision on the issue under consideration.

Appendix 1

Approximate form

N	Name,	Note
1	2	3

WATER BALANCE CALCULATION,

justifying rational use

water and wastewater discharges into systems

village sewerage

Name

water consumption

Name

Norm

Rationale

Mode

The volume of water consumption,

m / year / m / working day

The volume of water disposal in the systems

Sewerage m / year / m / working day

beater and

source

measurements

(working

(m) on

column 4

working day, working day day/year

Total

drinking water

industrial water

Total

from using

drinking water

from using

technical

Wastewater

installations, processes

amount

measurements

source

cold

hot

steam

source

cold

hot

steam

cold

hot

steam

cold

hot

steam

SECTION I. Regulatory volumes of water consumption and water disposal at the subscriber's (sub-subscriber's) facilities exempted from charging for excess discharge of wastewater and pollutants into sewerage systems.

SECTION II. Water management balance calculation of a sub-subscriber

(Name)

Total:

SECTION III. Water management balance calculation of the subscriber

Total:

Total for Sections II, III

SECTION IV. Calculation of water disposal limits.

for 200+.. year L =

cubic meter/cal.day)

for 200+.. year L =

cubic meters/cal.day (including the sub-subscriber's limit

cubic meter/cal.day)

for _____ year L =

cubic meters/cal.day (including the sub-subscriber's limit

cubic meter/cal.day)

Appendix 2

Approximate form

Name of the subscriber, sewerage system ______________________

Sewer system subscriber address _____________________________

N	Name,	Note
1	2	3

water protection measures

to reduce waste

water, wastewater and pollutant discharges

N	Name Events (indicating	Project capacity events	Source	Term	Estimated cost of the event in thousand rubles (at current year prices)										The effectiveness of the planned activities, m / day / m / year
	major logical processes, equipment)	m / day	Contractor		About-	Remainder	Plan for (implementation period)	Including							Volume cuts water consumption			Volume cuts leads		Volume the waters cleared up to norm - active quality		Scroll pollutants, decreasing at implementation events
								2000	2001		2001	2003	2003	200_	drinking	technical	grief	in sewers	into the body of water	in sewers	in
1	2	3	4	5	6	7	8	9	10		11	12	13	14	15	16	17	18	19	20	21	22
I. Plan of water protection measures of the sub-subscriber.
Total:										for 2000
										for 2001
										for ___ year
II. Plan of water protection measures of the subscriber.
Total:										for 2000
										for 2001
										for ___ year

Annex 3

SCROLL

pollutants removed from wastewater

at biological treatment facilities

N	Substance	Max.	Effect- activity	When resetting the cleaning wastewater into water economic object drinking and cultural household water use				When collecting cleaning wastewater into water fish farm facility natural water use
				LPV	MPC		Class	LPV	MPC		Class
1	2	3	4	5	6		7	8	9		10
1.	Acrylic acid	-	65	s-t	0,5			tox.	0,0025		3
2.	Acrolein	0,01	-	s-t	0,02		1	-	-		-
3.	allyl alcohol	3	65	org.	0,1		-	-	-		-
4.	Aluminum	5	50	s-t	0,5		2	tox.	0,04		4
5.	Ammonium nitrogen (ion)**	45	30	s-t	2,0		3	tox.	0,5		4
6.	Aniline	0,1	80	s-t	0,1		2	tox.	0,0001		2
7.	Acetaldehyde	20	80	org.	0,2		4	org.	0,25		4
8.	Acetone	40		total	2,2		3	tox.	0,05		3
9.	Barium	10	40	s-t	0,1		2	org.	0,74		4
10.	Benzoic acid	15	80	total	0,6		-	-	-		-
11.	Butyl acrylate	-	65	org.	0,01		4	tox.	0,0005		3
12.	Butyl acetate	-	-	total	0,1		4	s-t	0,3		4
13.	Butyl alcohol is normal.	10	80	s-t	0,1		2	tox.	0,03		3
14.	-" - secondary	20	80	s-t	0,2		2	-	-		-
15.	-" - tertiary	20	80	s-t	1,0		2	tox.	1,0		4
16.	Vanadium	2,0	65	s-t	0,1		3	tox.	0,001		3
17.	Vinyl acetate	100	30	s-t	0,2		2	tox.	0,01		4
18.	Bismuth	15	65	s-t	0,1		2	-	-		-
19.	Hydrazine	0,1	-	s-t	0,1		2	tox.	0,00025		-
20.	hydroquinone	15	30	org.	0,2		4	tox.	0,001
21.	Glycosine	30	35	-	-		-	dignity.	0,1		4
22.	Glycerol	90	-	total	0,5		4	s-t	1,0		4
23.	dibutyl phthalate	0,2	30	total	0,2		3	-	-		-
24.	Dimethylacetamide	15	80	s-t	0,4		2	s-t	1,2		4
25.	Dimethylphenylcarbinol	1,0	65	s-t	0,05		2	s-t	1,0		4
26.	Dimethylphenol	-	50	org.	0,25		4	tox.	0,01		3
27.	Adipic acid dinitrile	-	30	s-t	0,1		2	-	-		-
28.	Dicyandiamide	100	30	org.	10,0		4	-	-		-
29.	Diethanolamide	1,0	-	org.	0,8		4	tox.	0,01		3
30.	diethylamine	10	30	s-t	2,0		3	tox.	0,01		3
31.	Iron	5	65	org.	0,3		3	tox.	0,1		4
32.	Fats (vegetable and animal)	50	60	Normalized by BOD				normalized by BOD
33.	Isobutyl alcohol	-	50	total	1,0		4	tox.		2,4		4
34.	Isopropyl alcohol	-	65	org.	0,25		4	tox.		0,01		3
35.	Cadmium	0,1	50	s-t	0,001		2	tox.		0,005		2
36.	Caprolactam	25	80	total	1,0		4	tox.		0,01		3
37.	Carbomethylcellulose	on	-	total	according to BOD		-	tox.		12,0		4
38.	Carbomol	-	60	total	according to BOD		4	org.		1,0		-
39.	Cobalt	1,0	40	s-t	0,1		2	tox.		0,01		3
40.	o-cresol	100	40	s-t	0,004		2	tox.		0,003		-
41.	Crotonaldehyde	6	-	s-t	0,3		3	tox.		0,01		4
42.	xylene	1,0	50	org.	0,05		3	org.		0,05		3
43.	latex	10	-	org.	6,0		4	tox.		001-1,6		3-4
44.	Ludigol	100	60	Hopped by BOD				-		-		-
45.	Maleic acid	60	80	org.		1,0	4	-		-		-
46.	Manganese	30	-	org.		0,1	3	tox.		0,01		4
47.	Butyric acid	500	85	s-t		0,01	2	-		-		-
48.	Copper	0,5	65	org.		1,0	3	tox.		0,001		3
49.	Metazine	10	30	org.		0,3	4	-		-		-
50.	Methacrylamide	-	30	s-t		0,1	2	-		-		-
51.	Methacrylic acid	-	30	s-t		1,0	3	tox.		0,005		3
52.	methanol	30	80	-		-	-	s-t		0,1		4
53.	Methyl methacrylate	500	65	s-t		0,01	2	tox.		0,001		3
54.	Methylstyrene	1,0	50	org.		0,1	3	-		-		-
55.	Methyl ethyl ketone	50	65	org.		1,0	3	-		-		-
56.	Molybdenum	-	30	s-t		0,25	2	tox.		0,0012		-
57.	Lactic acid	-	85	total		0,9	4	normalized by BOD
58.	Monoethanolamine	5	50	s-t		0,5	2	s-t		0,01			4
59.	Ethylene glycol monoethyl ether	-	65	total		1,0	-	-		-			-
60.	Urea (urea)	according to BOD		total		according to BOD	4	s-t		80			4
61.	Formic acid	-	85	-		according to BOD	-	tox.		1,0			-
62.	Arsenic	0,1	40	s-t		0,05	2	tox.		0,05			3
63.	L-naphthol	-	65	org.		0,1	3	-		-			-
64.	V-naphthol	-	65	s-t		0,4	3	-		-			-
65.	Oil and oil products in sol. and emulsifier. form	15	70	org.		0,3	3	fish. -hoz.		0,05			3
66.	Nickel	0,5	40	s-t		0,1	3	tox.		0,01			3
67.	Nitrobenzene	-	70	s-t		0,2	3	tox.		0,01			-
68.	Nitrates (by NO)	-	-	s-t		45	3	s-t		40			-
69.	- "- (by N)	-	-	s-t		10,2	3	s-t		9			-
70.	Nitrites (according to NO)	-	-	s-t		3,3	2	tox.		0,08			-
71.	- "- (by N)	-	-	-		1,0	7	-		0,02			-
72.	Octanol (octyl alcohol)	-	50	org.		0,05	3	-		-			-
73.	Tin	10	-	tox.		6	4	tox.		0,66			4
74.	Pyrocatechin	-	80	org.		0,1	4	-		-			-
75.	Polyacrylamide	40	-	s-t		2,0	2	tox.		0,08			-
76.	polyvinyl alcohol	20	-	org.		0,1	4	tox.		0,3			4
77.	propylene glycol	-	85	total		0,6	3	-		-			-
78.	propyl alcohol	12	-	org.		0,25	4	-		-			-
79.	Resorcinol	12	80	total		0,1	4	tox.		0,04			3
80.	Mercury	0,005	50	s-t		0,0005	-	tox.		missing			1
81.	Lead	0,1	40	s-t		0,03	2	tox.		0,1			3
82.	Selenium	10	40	s-t		0,001	2	tox.		0,0016			2
83.	carbon disulfide	5	-	org.		1,0	4	tox.		1,0			3
84.	Syntamid		60	org.		0,1	4	s-t		0,1			4
85.	surfactant (anionic)	20	65	org.		0,5	-	-		-			-
86.	Styrene	10	50	org.		0,1	-	org.		0,1			3
87.	Strontium	26	15	s-t		7	-	tox.		10,0			4
88.	Sulfides (sodium)	1	50	total		missing	-	tox.		0,01			3
89.	Antimony	0,5	30	s-t		0,05	-	-		-			-
90.	thiourea	10	40	s-t		0,03	2	tox.		1,0			4
91.	Titanium	0,1	65	gen.-s		0,1	3	tox.		0,06			4
92.	Toluene	15	50	org.		0,5	4	org.		0,5			3
93.	Tricresyl Phosphate	40	30	s-t		0,05	2	-		-			-
94.	Triethanolamine	5	40	org.		1,0	4	tox.		0,01			3
95.	Acetic acid		80	org.		1,0	3	tox.		0,01			4
96.	Phenol	15	80	org.		0,001	4	fish.-		0,001			-
97.	Formaldehyde	100	65	s-t		0,05	2	tox.		0,1			4
98.	Phosphates**	20	30	-		-	-	tox. santox.		2 (according to R)			-
99.	Phthalic acid	0,5	60	org.		0,02	4	tox.		3,0			4
100.	Fluorides (anion)	-	15	s-t		1,5(1,2)	2	tox.		0,5			3
101.	Chromium	2,5	65	s-t		0,5	3	tox.		0,07			3
102.	Chromium		50	s-t		0,05	3	tox.		0,02			3
103.	Chromolane	10	20	total		0,5	3	org.		0,5			3
104.	Cyanides (anion)	1,5	60	s-t		0,1	2	tox.		0,05			3
105.	Zinc	1,0	60	tox.		1,0	3	tox.		0,01			3
106.	Ethanol	14	70	total		-	-	tox.		0,01			-
107.	Emukril S	10	-	org.		5,0	3	tox.		1,6			4
108.	Etamon DS	10	30	org.		4,0	4	dignity.		0,5			4
109.	2-ethylhexanol	6	-	-		-	-	dignity.		0,5			4
110.	Ethylene glycol	1000	65	s-t		1,0	3	s-t		0,25			4
111.	Ethylene chlorohydrin	5	65	s-t		0,1	2	s-t		0,1			2

* LPV - limiting indicator of harmfulness: "s-t" - sanitary-toxicological;

"tox" - toxicological; "org." - organoleptic; "gen." - general sanitary;

"fish-farm." - fishery; "san" - sanitary.

** Ammonia nitrogen and phosphorus removal efficiencies are given for current conventional biological treatment technology. Using special technologies(schemes with nitrification-denitrification, reagent or biological removal of phosphates, etc.), requiring the reconstruction of treatment facilities, the removal efficiency can be increased to 95-98%.

MPC for fishery reservoirs depends on the trophicity of reservoirs

dash means no data

Note:

1. The efficiency of pollutant removal at biological treatment facilities (column 4) is taken according to actual average annual data obtained during operation.

2. When operating biological treatment facilities with the provision of design indicators for the quality of treatment in terms of BOD and suspended solids, actual operational data on the efficiency of treatment (retention) of pollutants (average values for the last 2-3 years of operation of treatment facilities) should be used as calculated values.

3. If the biological treatment facilities do not provide the quality indicators of wastewater treatment specified in the projects, operational data on the efficiency of cleaning (retention) of pollutants should also be applied.

4. In the absence of systematic operational data on the effectiveness of cleaning (or the impossibility of establishing it), the indicator from column 4 of this table is taken.

Appendix 4

SCROLL

pollutants not removed from wastewater

at biological treatment facilities

N	Substance	When discharged into a water body for drinking and domestic water use			When discharged into a fishery water use facility
		LPV	MPC	Class	LPV	MPC	Class
1	2	3	4	5	6	7	8
1.	Anisole (methoxybenzene)	s-t	0,05	3	-	-	-
					org.
2.	Acetophenone	-"-	0,1	4	tox.	0,04	3
3.	Butylbenzene	org.	0,1	3	-	-	-
4.	Hexachloran
	(hexachlorocyclohexane)	org.	0,02	4	tox.	missing	1
5.	Hexachlorobenzene	s-t	0,05	3	-	-	-
6.	Hexachlorobutadione	org.	0,01	3	-	-	-
7.	Hexachlorobutane	org.	0,01	3	-	-	-
8.	Hexachlorocyclopentadiene	org.	0,001	3	-	-	-
9.	Hexachloroethane	org.	0,01	4	-	-	-
10.	RDX	s-t	0,1	2	-	-	-
11.	Dimethyldioxane	s-t	0,005	2	-	-	-
12.	Dimethyldithiophosphate	org.	0,1	4	tox.	missing	1
13.	Dimethyl dichlorovinyl phosphate	org.	1	3	tox.	missing	1
14.	dichloroaniline	org.	0,05	3	tox.	0,001	3
15.	dichlorobenzene	org.	0,002	3	tox.	0,001	2
16.	dichlorobutene	org.	0,5	4	-	-	-
17.	Dichlorohydrin	org.	1	3	-	-	-
18.	Dichlorodiphenyltrichloroethane (DDT)	s-t	0,1	2	tox.	missing	1
19.	Dichloronaphthoquinone	s-t	0,25	-	-	-
20.	Sodium dichloropropionate	-	-	-	tox.	3,0	4
21.	dichlorvos	org.	1,0	3	tox.	missing	1
22.	Dichloroethane	s-t	0,02	2	tox.	0,12	-
23.	Diethylaniline	org.	0,15	3	tox.	0,0005	2
24.	diethylene glycol	s-t	1	3	tox.	0,05	-
25.	diethyl ether	org.	0,3	4	tox.	1,0	4
26.	Maleic acid diethyl ester	s-t	1,0	2	-	-	-
27.	diethylmercury	s-t	0,0001	1	-	-	-
28.	Isoprene	org.	0,005	4	s-t	0,01	3
29.	Isopropylamine	s-t	2	3	-	-	-
30.	Captax	org.	5	4	tox.	0,05	4
31.	Karbofos	org.	0,05	4	tox.	missing	1
32.	B-mercaptodiethylamine	org.	0,1	4	-	-	-
33.	Metaphos	org.	0,02	4	tox.	missing	1
34.	Methylnitrophos	org.	0,25	3	-	-	-
35.	Nitrobenzene	s-t	0,2	3	tox.	0,01	-
36.	Nitrochlorobenzene	s-t	0,05	3	-	-	-
37.	pentaerythritol	s-t	0,1	2	-	-	-
38.	Petrolaum (mixture of solid
	hydrocarbons)	s-t	6,5	4
39.	Picric acid
	(trinitrophenol)	org.	0,5	3	tox.	0,01	3
40.	Pyrogallol (trioxybenzene)	org.	0,1	3	-	-	-
41.	Polychloropinene	-	-	-	tox.	missing	1
42.	Polyethyleneimine	-	-	-	tox.	0,001	-
43.	Propylbenzene	org.	0,2	3	-	-	-
44.	Tetrachlorobenzene	s-t	0,01	2	-	-	-
45.	Tetrachlorheptane	org.	0,0025	4	-	-	-
46.	Tetrachloromethane (tetrachloride
	carbon)	s-t	0,006		tox.	missing	1
47.	Tetrachlorononane	org.	0,003	4	-	-	-
48.	Tetrachloropentane	org.	0,005	4	-	-	-
49.	Tetrachloropropane	org.	0,01	4	-	-	-
50.	Tetrachlorundecane	org.	0,007	4	-	-	-
51.	Tetrachloroethane	org.	0,2	4	-	-	-
52.	Thiophene (thiofuran)	org.	2	3	-	-	-
53.	thiophos	org.	0,003	4	tox.	0,005	3
51.	Tributyl Phosphate	org.	0,01	4	tox.	0,02	3
52.	Triethylamine	s-t	2	2	tox.	1,0	4
53.	Phosphamide	org.	0,03	4	tox.	0,01	3
54.	Furfural	org.	1,0	4	tox.	0,01	-
55.	Chlorobenzene	s-t	0,02	3	tox.	0,001	3
56.	Chloroprene	s-t	0,01	2	-	-	-
57.	Chlorophos	org.	0,05	4	tox.	missing	1
58.	Chlorocyclohexane	org.	0,05	3
59.	Ethylbenzene	org.	0,01	4	tox.	0,001	-
60.	Cyclohexane	s-t	0,1	2	tox.	0,01	3
61.	Cyclohexanol	s-t	0,5	2	tox.	0,001	3
62.	sulfates	org.	500	4	tox.	100
63.	chlorides	org.	350	4	tox	300

Appendix 5

SCROLL

substances and materials prohibited for

discharge into sewerage systems of settlements

1. Substances and materials capable of clogging pipelines, wells, grids or being deposited on their walls:

Scale;

Lime;

Metal shavings;

Construction waste and garbage;

Solid household waste;

Industrial waste and sludge from local (local) treatment facilities;

floating substances;

Insoluble fats, oils, resins, fuel oil, etc.

Colored wastewater with an actual dilution ratio exceeding the normative indicators of the general properties of wastewater by more than 100 times;

Biologically hard surfactants (surfactants).

2. Substances that have a destructive effect on the material of pipelines, equipment and other structures of sewerage systems:

acids;

Alkalis, etc.

3. Substances that can form toxic gases, explosive, toxic and combustible gases in sewer networks and structures:

hydrogen sulfide;

carbon disulfide;

Carbon monoxide;

Hydrogen cyanide;

Vapors of volatile aromatic compounds;

Solvents (gasoline, kerosene, diethyl ether, dichloromethane, benzenes, carbon tetrachloride, etc.).

4. Concentrated and mother solutions.

5. Wastewater with a fixed category of toxicity "hypertoxic";

6. Wastewater containing microorganisms - pathogens of infectious diseases.

7. Radionuclides, the discharge, removal and neutralization of which is carried out in accordance with the "Protection Rules surface water and current radiation safety standards.

Appendix 6

Average characteristics of the quality of domestic wastewater discharged by subscribers

housing stock of settlements

N	List of contaminants	Average characteristic of domestic wastewater (concentration, mg/l)
1	suspended solids	110
2	BOD full	180
3	COD	250
4	Fats	40
5	Ammonia nitrogen	18
6	chlorides	45
7	sulfates	40
8	Dry residue	300
9	Oil products	1,0
10	surfactant (anionic)	2,5
11	Phenols	0,005
12	Iron total	2,2
13	Copper	0,02
14	Nickel	0,005
15	Zinc	0,1
16	Chrome (+3)	0,003
17	Chrome (+6)	0,0003
18	Lead	0,004
19	Cadmium	0,0002
20	Mercury	0,0001
21	Aluminum	0,5
22	Manganese	0,1
23	Fluorides	0,08
24	Phosphorus phosphate	2,0

Note: If necessary, the data given in the table can be refined and corrected based on field studies.

Annex 7

EXAMPLES OF CALCULATION OF NORMATIVES

DC pollutants for subscribers

I. Calculation of DC for petroleum products

Initial data:

POLLUTANTS IN WASTEWATER

OF THE SUBSCRIBER TO THE SEWER SYSTEMS

OF THE SETTLEMENT

SUBSCRIBER:_________________________________________________________________________

(name of subscriber)

___________________________________________________________________________

The contract for the supply of water, the reception of wastewater and pollutants with the organization of WSS from

N_______

Code (code) -______________________

(housing stock, others)

Validity periods:

Start -________________________________________________________________

The ending -_____________________________________________________________

1. Grounds for establishing DS

1.1. Subscriber's request.

1.2. Approved "Conditions for the reception of pollutants in wastewater discharged by subscribers into the sewerage system of a settlement".

1.3. The act of delimitation of responsibility between the subscriber and the organization of the WSS for sewerage networks.

1.4. Scheme of on-site sewerage networks of the subscriber and subscriber outlets connected to the sewerage system of the settlement.

1.5. Results of analytical measurement of the composition and properties of the subscriber's wastewater.

1.6. Draft and conclusion on the WSS organization project (for subscribers newly connected to the sewerage systems of the settlement.

2. Initial data for DS

The initial data required to establish the DS of pollutants in the subscriber's wastewater (including sub-subscribers) are given by the subscriber in Table 1.

Table 1

Notes:

1. Fats and oil products are allowed to be discharged into sewage systems only in a dissolved and emulsified state.

2. Metal salts are determined by the gross content in the natural wastewater sample.

3. Other notes (depending on local specifics)

3.3. Discharge of pollutants not specified in the list of Table 2 is allowed in concentrations not exceeding the corresponding maximum allowable concentrations (MPC) in the water of reservoirs for cultural, domestic, household, drinking and fishery use (according to minimum value MPC).

4. List of substances prohibited for dumping

into the sewerage system of the settlement

In order to ensure the trouble-free operation of networks and structures of sewerage systems (preventing silting, greasing, blockage of pipelines, aggressive influence on the material of pipes, wells, equipment; violations of the technological regime of cleaning), as well as protecting sewerage systems from the harmful effects of pollutants and ensuring the health of personnel, serving the sewerage system, it is prohibited to discharge into the sewerage system:

1.	Standard for release into a reservoir	= 0.05 mg/l
2.	Permissible concentration for biological treatment	= 25 mg/l
3.	Retention efficiency at wastewater treatment plants	= 85%
4.	Concentration in domestic waste	= 0.9 mg/l
5.	Annual wastewater consumption for wastewater treatment plants

1	substances capable of clogging pipelines, wells, gratings or being deposited on the walls of pipelines, wells, gratings (scale, lime, sand, gypsum, metal shavings, canyga, fiber, soil, construction and household waste, industrial and household waste, sludge and sediments from local (local) treatment facilities, floating substances, etc.);
2	substances that have a destructive effect on the material of pipelines, equipment and other structures of sewage systems (acids, alkalis, insoluble fats, oils, resins, fuel oil, etc.);
3	substances that can form toxic gases (hydrogen sulfide, carbon disulfide, carbon monoxide, hydrogen cyanide, vapors of volatile aromatic hydrocarbons, etc.) and other explosive and toxic mixtures in sewer networks and structures, as well as combustible impurities, toxic and dissolved gaseous substances(in particular, solvents: gasoline, kerosene, diethyl ether, dichloromethane, benzenes, carbon tetrachloride, etc.);
4	substances in concentrations that prevent the biological treatment of wastewater, biologically difficult to oxidize organic substances and mixtures;
5	biologically hard surfactants (surfactants);
6	especially hazardous substances, including hazardous bacterial substances, virulent and pathogenic microorganisms, pathogens of infectious diseases;
7	substances for which maximum allowable concentrations (MPC) in the water of water bodies have not been established and (or) which cannot be detained in technological process water treatment at local and (or) city treatment facilities;
8	substances in the composition of concentrated mother and bottom solutions, spent electrolytes;
9	radionuclides, the discharge, removal and neutralization of which are carried out in accordance with the "Rules for the protection of surface waters and current radiation safety standards";
10	pollutants with actual concentrations exceeding the norms of the DC pollutants by more than 100 times;
11	wastewater with an active reaction of the medium pH less than 2 or more than 12;
12	colored wastewater with an actual dilution ratio exceeding the NP of the general properties of wastewater by more than 100 times.
13	Wastewater with a fixed category of toxicity "hypertoxic"

5. Special conditions: when changing the ownership of the subscriber's objects, the subscriber is obliged to notify in writing about the transfer of objects to another person within 3 days, and the latter must submit an application for a permit to discharge wastewater into the sewerage system of the settlement within 7 days.

6. In case of reconstruction, expansion, re-profiling of production, the subscriber is obliged to re-issue the existing permit within 7 days. The permit is issued only after the signing of the act by the commission on the acceptance of the facility for operation.

Appendix 9

PROTOCOL

pollutant release detection,

prohibited from being discharged into the sewerage system

(name, address)

The code: __________________________________________

Place of control

(reasons for control, short description object state, observations)

___________________________________________________________________________________

prescription: ______________________________________________________________________

___________________________________________________________________________________

Special marks: ____________________________________________________________________

___________________________________________________________________________________

Annex 10

Organization of water supply and sewerage

______________________________________________________________

sampling of wastewater discharged

subscriber to the sewerage system

Subscriber _________________________________________________________________________

(name, address)

___________________________________________________________________________________

The code: ________________________________

Special marks: _________________________________________________________________________

The sealed samples were received by the laboratory and accepted for execution:

Appendix 11

PROTOCOL

wastewater sample analysis results

_________________________________________________________

(subscriber's name, code)

according to the Sampling Act dated "__" ________________ 200 _ N _______

Date and time of sample delivery "_ __ " _____ 200 __ ___ hour ___ minutes

Head of the laboratory (organization) ________________________ ()

signature full name

"____" _________ 200 ___

"__" ____ 200 __, ___ hour ___ min ________________________________________

(position, signature, full name of the responsible

analytical laboratory employee)

In practice, there are special building codes. According to them, all calculations of the septic tank are carried out, including its volume. The data was approved in 1986. Despite this age, the rules are still relevant today. According to them, construction is carried out new system and also reconstruct the old sewerage system.

General instructions for calculating the volume of a septic tank

When designing a sewer, be sure to take into account:

Average water consumption per day by one family member;
Size of wastewater (approximate figure to water consumption);
Assessment of sanitary and technical standards houses, as well as the climate of the area;
Substantiation of works by economic indicators.

The fact is that the norms of water consumption 25 years ago and today differ significantly. Software SNiP 2.04. 09-85 water consumption per person - 125 liters per day - without hot water in a house without a bath. The maximum value for water consumption is close to 350 liters. This is for houses with hot heating and a bathroom. These requirements do not refer to a washbasin, dishwasher or washing machine. It is about meeting the minimum human needs per day.

Helpful information ! When the volume of the septic tank is determined, the maximum amount of water consumed by all family members per day is taken into account.

Examples of calculating the volume of a septic tank in modern conditions

Septic tanks are designed for approximately 25 cubic meters water per day. It is known that in one cube - 1000 liters of water. During mechanical water purification, raw sediment remains. He has organic matter. Sediments are disinfected through fermentation processes. The rate of fermentation directly depends on the temperature that is in the septic tank.

The rate of fermentation and decrease in the activity of the septic tank is possible for a number of reasons:

The septic tank is overloaded;
The precipitation temperature is below 6 degrees, which is unacceptable;
Wastewater contains harsh chemicals.

For at least 6 months, the residue that falls out remains in the septic tank. Therefore, it is necessary to provide in advance the required volume of the septic tank. According to the Yakovlev method, the volume of the sewage tank is determined by the calculation of flowing and sludge waters. The silt part is the sediments that lie at the bottom of the tank.

The volume of the flowing part depends on how intensively the waste is drained into the septic tank. The liquid drain stays in the tank for up to three days. The flow part with a flow rate of up to 5000 liters per day will be: 3Q. Q is the total water consumption per day.

The amount of precipitation can be determined by the consumption of solid sediment in the septic tank, which is calculated per person. It is 0.8 liters per day. Also, the calculation is carried out on the basis of the rate of decay of sediments. Natural decay is taken into account, which is 30 percent per day. After cleaning the septic tank, it is recommended to leave up to 20 percent of the sediment at the bottom.

So: 0.8 * t * (100% - 30% / 100%) * 120% = 0.8 * t * 0.7 * 1.2 = t * 0.672

Using this formula, you can determine how much the septic tank will fill with organic waste. This means that you can know the time when you need to start cleaning the tank. The sediment can rot from 6 to 12 months. There are more. With an increase in time, it is necessary to increase the volume of the septic tank.

Calculation of the total water consumption per person per day

It is estimated that one person needs 150 liters of water per day. In fact, this information is outdated. This indicator does not take into account the operation of the shower, washbasin and washing machine, as well as other devices that are in the house and are connected with water.

But for the calculation we will take 150 liters of water per day per person. Let's add to this calculation:

1 minute in the shower is 10 liters of water. On average, a shower takes 7 minutes.
Bidet consumes up to 8 liters per minute. The average bidet is used for 5 minutes.
One bath takes 110 liters of water.
For 2 kilos of laundry washing machine you need 70 liters of water.
For one work cycle dishwasher 15 liters of water is spent.
The first three points must be calculated per person.

(150 + 10 * 7 + 8 * 5 + 110) = 370 liters per day.

This indicator is very close to the maximum water consumption per day. Now you need to determine the water consumption for all family members per day. Only now let's add the consumption of the washing machine and dishwasher. For example, if there are 4 people living in a house, then:

Q \u003d 370 * 4 + 70 + 15 \u003d 1565 \u003d 1.6 cubic meters per day

This is approximately 1.6 cubic meters of water per day. For a family in which there are 3 people, the following volume of a septic tank is needed:

3 * 1.6 = 4.8 m3

This is the most optimal size reservoir.

According to SNiP calculations, when using a septic tank with the calculation of 150 liters of water per day and at an average temperature of 10 degrees in winter, 20 percent can be added when calculating the total volume of the septic tank. In this case:

4.8 * (1-0.2) = 3.84 m3.

This is the most small size septic tank that can be used.

If the septic tank will be installed in the country or country house, where they come only once in the season, then you can safely reduce the volume of the septic tank when calculating by 30 percent.

Calculation of installation of multi-chamber septic tanks

In order to increase the performance of the septic tank, it is recommended to divide it into two chambers. If you use a septic tank when consuming 5 cubic meters of water per day, then it will be enough with one chamber. If more than 5 cubic meters of water are used, then it is advisable to install a three-chamber tank.

If the septic tank has two chambers, then the volume of the first chamber should be 75 percent of the total volume of the septic tank. The second septic tank should be 50% of the total volume.

Important! For a three-chamber septic tank, the volume of the first tank should be about 50 percent. The second and third tanks use 25 percent of the total.

To ensure that the installation of the tank does not take much time and effort, you can slightly deviate from the indicated values.

Tank Depth Calculation

On the site it is necessary to allocate as little space as possible for a septic tank. According to the requirements, the surface area of the tank should be 1.8 square meters. It means that minimum width- 1 meter, length - 1.8 meters.

Using this example, we calculate the height of the septic tank for use by a family with 4 members. If the volume of the septic tank is 4.8 cubic meters. meters, then:

4.8 / 1 / 1.8 \u003d 2.6 meters.

But there are several nuances when calculating the depth of a septic tank.

If the area for the septic tank is limited, then it can be increased by increasing the depth.
The septic tank should not be deeper than ground water.
It is best that the septic tank is located below the freezing level of the soil. In our country, in some regions, this level is about two meters.

It is necessary to reasonably use the working volume of the septic tank in your area. If you increase or decrease the volume of the septic tank with an incorrect calculation, then the functionality of the device will be impaired. It is recommended to perform a separate calculation for each case, and not be guided by generally accepted standards.

Helpful information! In order to ensure the normal functioning of the sewerage system, it is necessary to responsibly approach the calculation of the septic tank, because this is one of the main parts of the entire system. It is important to study all the rules for calculating the volume of the tank. Otherwise, an overflow of the septic tank may form and the waste will flow out to the household plot. This will lead to environmental pollution and unpleasant odor.

Today, you can seek help from professionals who, before installing a septic tank on your site, will carry out preliminary calculations, which make no sense to doubt. This is the only way to forget about what sewage is. However, if there is confidence in own forces, then you can carry out all the calculations and installation of equipment yourself. So you can significantly save money on calling the wizard and get good experience works.

Recently, septic tanks have become popular, which are already in ready-made sold in building hypermarkets. They have a specific scope. That is, in order to install one of them in your yard, you only need to know how much water will be consumed in the house per day on average.

All other calculations have long been carried out by specialists, taking into account many factors that can affect the septic tank from the environment. However, the price of such products can be quite high. Therefore, it is necessary to calculate the pros and cons when buying.

Categories

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How to calculate waste water. Calculation of the cesspool: volume, depth, diameter. Capacitive margin correction

Methodology for calculating the volumes of watering effluents entering the municipal sewerage systems during washing (watering) of streets, driveways, squares, etc.

The act of delimitation of responsibility of the parties for sewerage networks n ______ dated "___" ___________

General instructions for calculating the volume of a septic tank

When designing a sewer, be sure to take into account:

Examples of calculating the volume of a septic tank in modern conditions

The rate of fermentation and decrease in the activity of the septic tank is possible for a number of reasons:

So: 0.8 * t * (100% - 30% / 100%) * 120% = 0.8 * t * 0.7 * 1.2 = t * 0.672

Calculation of the total water consumption per person per day

But for the calculation we will take 150 liters of water per day per person. Let's add to this calculation:

(150 + 10 * 7 + 8 * 5 + 110) = 370 liters per day.

Q \u003d 370 * 4 + 70 + 15 \u003d 1565 \u003d 1.6 cubic meters per day

3 * 1.6 = 4.8 m3

4.8 * (1-0.2) = 3.84 m3.

Calculation of installation of multi-chamber septic tanks

Tank Depth Calculation

Using this example, we calculate the height of the septic tank for use by a family with 4 members. If the volume of the septic tank is 4.8 cubic meters. meters, then:

4.8 / 1 / 1.8 \u003d 2.6 meters.

The act of delimitation of responsibility of the parties for sewerage networks n ____ dated "_" ___________