1 area of use
This set of rules establishes design standards for newly built and reconstructed external sewage systems for permanent use of urban and industrial wastewater close to them in composition, as well as rain sewerage. This set of rules does not apply to sewerage systems of greater capacity (more than 300 thousand m 3 / day).
This set of rules contains references to the following regulatory documents: SP 5.13130.2009 Fire protection systems. Fire alarm and fire extinguishing installations are automatic. Design norms and rules SP 12.13130.2009 Determination of the category of premises, buildings and outdoor installations in terms of explosion and fire hazard and Structures on Undermined Territories and Subsiding Soils” SP 25.13330.2012 “SNiP 2.02.04-88 Foundations and Foundations on Permafrost Soils” SP 28.13330.2012 “SNiP 2.03.11-85 Protection of Building Structures from Corrosion” SP 30.13330.2012 “SNiP 2.04.01-85* Internal water supply and sewerage of buildings” SP 31.13330.2012 “SNiP 2.04.02-84* Water supply. External networks and structures” SP 38.13330.2012 “SNiP 2.06.04-82* Loads and impacts on hydraulic structures (wave, ice and ships)” SP 42.13330.2011 “SNiP 2.07.01-89* Urban planning. Planning and development of urban and rural settlements" SP 43.13330.2012 "SNiP 2.09.03-85 Constructions of industrial enterprises" SP 44.13330.2011 "SNiP 2.09.04-87 * Administrative and domestic buildings" SP 62.13330.2011 "SNiP 42-01- 2002 Gas distribution systems" SP 72.13330.2012 "SNiP 3.04.03-85 Protection of building structures and facilities against corrosion" SP 104.13330.2011 "SNiP 2.06.15-85 Engineering protection of territories from flooding and flooding" SP 131.13330.2011 "SNiP 23- 01-99* Building climatology» GOST R 50571.1-2009 Low-voltage electrical installations GOST R 50571.13-96 Electrical installations of buildings. Part 7. Requirements for special electrical installations. Section 706. Cramped rooms with conductive floors, walls and ceilings GOST R 50571.15-97 Electrical installations of buildings. Part 5. Selection and installation of electrical equipment. Chapter 52. Electrical wiring GOST 12.1.005-88 System of labor safety standards. General sanitary and hygienic requirements for the air of the working area GOST 17.1.1.01-77 Nature protection. Hydrosphere. Use and protection of waters. Basic terms and definitions GOST 14254-96 Degrees of protection provided by enclosures (IP code) GOST 15150-69* Machines, instruments and other technical products. Versions for different climatic regions. Categories, conditions of operation, storage and transportation in terms of the impact of climatic factors of the environment GOST 19179-73 Land hydrology. Terms and definitions GOST 25150-82 Sewerage. Terms and Definitions
Note- When using this set of rules, it is advisable to check the effect of reference standards and classifiers in the public information system - on the official website of the national body of the Russian Federation for standardization on the Internet or according to the annually published information index "National Standards", which was published as of January 1 of the current year, and according to the corresponding monthly published information indexes published in the current year. If the referenced document is replaced (modified), then when using this set of rules, one should be guided by the replaced (modified) document. If the referenced material is canceled without replacement, the provision in which the link to it is given applies to the extent that this link is not affected.
Before sending an electronic application to the Ministry of Construction of Russia, please read the rules of operation of this interactive service set out below.
1. Electronic applications in the field of competence of the Ministry of Construction of Russia filled in in accordance with the attached form are accepted for consideration.
2. An electronic appeal may contain a statement, complaint, proposal or request.
3. Electronic appeals sent through the official Internet portal of the Ministry of Construction of Russia are submitted for consideration to the department for working with citizens' appeals. The Ministry provides an objective, comprehensive and timely consideration of applications. Consideration of electronic appeals is free of charge.
4. In accordance with the Federal Law of May 2, 2006 N 59-FZ "On the procedure for considering applications from citizens of the Russian Federation", electronic applications are registered within three days and sent, depending on the content, to the structural divisions of the Ministry. The appeal is considered within 30 days from the date of registration. An electronic appeal containing issues, the solution of which is not within the competence of the Ministry of Construction of Russia, is sent within seven days from the date of registration to the appropriate body or the appropriate official, whose competence includes resolving the issues raised in the appeal, with notification of this to the citizen who sent the appeal.
5. An electronic appeal is not considered when:
- the absence of the name and surname of the applicant;
- indication of an incomplete or inaccurate postal address;
- the presence of obscene or offensive expressions in the text;
- the presence in the text of a threat to the life, health and property of an official, as well as members of his family;
- using a non-Cyrillic keyboard layout or only capital letters when typing;
- the absence of punctuation marks in the text, the presence of incomprehensible abbreviations;
- the presence in the text of a question to which the applicant has already received a written answer on the merits in connection with previously sent appeals.
6. The response to the applicant of the appeal is sent to the postal address specified when filling out the form.
7. When considering an appeal, it is not allowed to disclose the information contained in the appeal, as well as information relating to the private life of a citizen, without his consent. Information about the personal data of applicants is stored and processed in compliance with the requirements of Russian legislation on personal data.
8. Appeals received through the site are summarized and submitted to the leadership of the Ministry for information. The answers to the most frequently asked questions are periodically published in the sections "for residents" and "for specialists"
Before sending an electronic application to the Ministry of Construction of Russia, please read the rules of operation of this interactive service set out below.
1. Electronic applications in the field of competence of the Ministry of Construction of Russia filled in in accordance with the attached form are accepted for consideration.
2. An electronic appeal may contain a statement, complaint, proposal or request.
3. Electronic appeals sent through the official Internet portal of the Ministry of Construction of Russia are submitted for consideration to the department for working with citizens' appeals. The Ministry provides an objective, comprehensive and timely consideration of applications. Consideration of electronic appeals is free of charge.
4. In accordance with the Federal Law of May 2, 2006 N 59-FZ "On the procedure for considering applications from citizens of the Russian Federation", electronic applications are registered within three days and sent, depending on the content, to the structural divisions of the Ministry. The appeal is considered within 30 days from the date of registration. An electronic appeal containing issues, the solution of which is not within the competence of the Ministry of Construction of Russia, is sent within seven days from the date of registration to the appropriate body or the appropriate official, whose competence includes resolving the issues raised in the appeal, with notification of this to the citizen who sent the appeal.
5. An electronic appeal is not considered when:
- the absence of the name and surname of the applicant;
- indication of an incomplete or inaccurate postal address;
- the presence of obscene or offensive expressions in the text;
- the presence in the text of a threat to the life, health and property of an official, as well as members of his family;
- using a non-Cyrillic keyboard layout or only capital letters when typing;
- the absence of punctuation marks in the text, the presence of incomprehensible abbreviations;
- the presence in the text of a question to which the applicant has already received a written answer on the merits in connection with previously sent appeals.
6. The response to the applicant of the appeal is sent to the postal address specified when filling out the form.
7. When considering an appeal, it is not allowed to disclose the information contained in the appeal, as well as information relating to the private life of a citizen, without his consent. Information about the personal data of applicants is stored and processed in compliance with the requirements of Russian legislation on personal data.
8. Appeals received through the site are summarized and submitted to the leadership of the Ministry for information. The answers to the most frequently asked questions are periodically published in the sections "for residents" and "for specialists"
The set of rules establishes design standards for newly built and reconstructed external sewage systems for permanent use of urban and industrial wastewater close to them in composition, as well as rain sewerage.
This set of rules does not apply to sewerage systems of greater capacity (more than 300 thousand m3 / day).
Size: 386 KB
Valid from 01/01/2013 to 06/25/2019.
From 06/26/2019 replaced in part - by order of the Ministry of Construction of Russia No. 860 / pr dated 12/25/2018 (taking into account).
Replaced by:
SP 32.13330.2018 Sewerage. Outdoor networks and facilities
Document approved:
Ministry of Regional Development of Russia, Order No. 635/11 of December 29, 2011
Date of entry into force: 01.01.2013
Publications: Ministry of Regional Development of Russia, 2012
Comment: According to the mandatory sections 1, 4 (clauses 4.8, 4.9, 4.11, 4.12), 5 (clauses 5.1.1 - 5.1.10), 6 (clauses 6.7.1, 6.7.2, 6.8.2), 7 ( clauses 7.1.1, 7.6.1 - 7.7.7), 8 (clauses 8.1.1, 8.2.1, 8.2.19, 8.2.20), 9 (9.1.1, 9.1.2, 9.1.4, 9.1. 9, 9.2.14.1), 10 (clauses 10.1.3, 10.2.9), 11 (clauses 11.1.1, 11.1.2, 11.1.4, 11.2.1, 11.2.2), 12.
Table of contents.
1 area of use
2 Normative references
3 Terms and definitions
4 General provisions
5 Estimated costs of urban wastewater. Hydraulic calculation of sewer networks. Specific costs, non-uniformity coefficients and estimated wastewater costs
5.1 General information
5.2 Hydraulic calculation of sewer networks
5.3 Smallest pipe diameters
5.4 Design speeds and fillings of pipes and channels
5.5 Slopes of pipelines, channels and flumes
6 Sewer networks and structures on them
6.1 General information
6.2 Bends, connections and pipe depths
6.3 Manholes
6.4 Overfall wells
6.5 Gutters
6.6 Pikes
6.7 Road crossings
6.8 Storm outlets
6.9 Network ventilation
6.10 Drainage stations
6.11 Snow melting stations
7 Rain sewer. Estimated rainwater flow
7.1 Conditions for diverting surface runoff from residential areas and enterprise sites
7.2 Determination of the average annual volumes of surface wastewater
7.3 Determination of the estimated volumes of surface wastewater when discharged for treatment
7.4 Determination of the estimated flow rates of rain and melt water in storm sewer collectors
7.5 Determination of the estimated flow rates of surface runoff when discharged for treatment and into water bodies
7.6 Qualitative characteristics of surface runoff from residential areas and sites of industrial enterprises
7.7 Treatment of surface runoff of residential areas and sites of enterprises
7.8 Structures for the regulation of surface runoff
8 Pumping and blower stations
8.1 General information
8.2 Pump stations
8.3 Blower stations
9 Wastewater treatment plant
9.1 General information
9.2 Facilities and equipment for mechanical wastewater treatment
9.2.1 Pre-straining equipment
9.2.2 Sand separation facilities
9.2.3 Do you average
9.2.4 Wastewater clarification facilities
9.2.5 Biological treatment facilities
9.2.6 Biological filters (biofilters)
9.2.7 Aerotanks
9.2.8 Bioreactors with attached biofilm
9.2.9 Desilting facilities
9.2.10 Deep wastewater treatment plants
9.2.11 Wastewater disinfection
9.2.12 Facilities for saturating treated wastewater with oxygen
9.2.13 Small wastewater treatment plants
9.2.14 Sewage sludge treatment facilities
10 Electrical equipment, process control, automation and control systems
10.1 General information
10.2 Technological part
10.3 SCADA and dispatching
10.4 Low current systems
11 Requirements for building solutions and structures of buildings and structures
11.1 Master plan and space-planning solutions
11.2 Heating and ventilation
12 Additional requirements for sewerage systems in special natural and climatic conditions
12.1 Seismic regions
12.2 Collapsible soils
12.3 Permafrost
12.3.1 General information
12.3.2 Wastewater treatment plant
12.4 Undermined areas
12.4.1 General information
12.4.2 Collectors and networks
12.4.3 Wastewater treatment plant
Annex A (normative) Basic terms and definitions
Annex B (mandatory) Map of rain intensity values
Annex B (mandatory) Classification of regions of the Russian Federation depending on climatic conditions
Bibliography
Approved and put into effect
Order of the Ministry
regional development
Russian Federation
(Ministry of Regional Development of Russia)
dated December 29, 2011 N 635/11
SET OF RULES
SEWER. OUTDOOR NETWORKS AND FACILITIES
UPDATED VERSION
SNiP 2.04.03-85
Sewerage. Pipelines and wastewater treatment plants
SP 32.13330.2012
Foreword
The goals and principles of standardization in the Russian Federation are established by the Federal Law of December 27, 2002 N 184-FZ "On technical regulation", and the development rules - by the Decree of the Government of the Russian Federation of November 19, 2008 N 858 "On the procedure for developing and approving sets of rules ".
About the set of rules
1. Performers - LLC "ROSEKOSTROY", JSC "Research Center "Construction".
2. Introduced by the Technical Committee for Standardization TC 465 "Construction".
3. Prepared for approval by the Department of Architecture, Construction and Urban Policy.
4. Approved by Order of the Ministry of Regional Development of the Russian Federation (Ministry of Regional Development of Russia) dated December 29, 2011 N 635/11 and entered into force on January 1, 2013.
5. Registered by the Federal Agency for Technical Regulation and Metrology (Rosstandart). Revision of SP 32.13330.2010 "SNiP 2.04.03-85. Sewerage. External networks and structures".
Information about changes to this set of rules is published in the annually published information index "National Standards", and the text of changes and amendments - in the monthly published information indexes "National Standards". In case of revision (replacement) or cancellation of this set of rules, a corresponding notice will be published in the monthly published information index "National Standards". Relevant information, notification and texts are also posted in the public information system - on the official website of the developer (Ministry of Regional Development of Russia) on the Internet.
Introduction
The update was carried out by 000 "ROSEKOSTROY" and OAO "NITs Construction", responsible executors: G.M. Mironchik, A.O. Dushko, L.L. Menkov, E.N. Zhirov, S.A. Kudryavtsev (LLC "ROSEKOSTROY"), M.I. Alekseev (SPbGASU), D.A. Danilovich (JSC "MosvodokanalNIIProekt"), R.Sh. Neparidze (Giprokommunvodokanal LLC), M.N. Sirota (JSC "TsNIIEP engineering equipment"), V.N. Shvetsov (JSC "NII VODGEO").
1 area of use
This set of rules establishes design standards for newly built and reconstructed external sewage systems for permanent use of urban and industrial wastewater close to them in composition, as well as rain sewerage.
This set of rules does not apply to sewerage systems of greater capacity (more than 300 thousand m3 / day).
This set of rules contains references to the following regulatory documents:
SP 5.13130.2009. Fire protection systems. Fire alarm and fire extinguishing installations are automatic. Design norms and rules
SP 12.13130.2009. Determination of the category of premises, buildings and outdoor installations in terms of explosion and fire hazard
SP 14.13330.2011 "SNiP II-7-81*. Construction in seismic regions"
SP 21.13330.2012 "SNiP 2.01.09-91. Buildings and structures on undermined territories and subsidence soils"
SP 25.13330.2012 "SNiP 2.02.04-88. Bases and foundations on permafrost soils"
SP 28.13330.2012 "SNiP 2.03.11-85. Corrosion protection of building structures"
SP 30.13330.2012 "SNiP 2.04.01-85*. Internal water supply and sewerage of buildings"
SP 31.13330.2012 "SNiP 2.04.02-84*. Water supply. External networks and structures"
SP 38.13330.2012 "SNiP 2.06.04-82*. Loads and impacts on hydraulic structures (wave, ice and ships)"
SP 42.13330.2011 "SNiP 2.07.01-89*. Urban planning. Planning and development of urban and rural settlements"
SP 43.13330.2012 "SNiP 2.09.03-85. Constructions of industrial enterprises"
SP 44.13330.2011 "SNiP 2.09.04-87*. Administrative and residential buildings"
SP 62.13330.2011 "SNiP 42-01-2002. Gas distribution systems"
SP 72.13330.2012 "SNiP 3.04.03-85. Protection of building structures and facilities against corrosion"
SP 104.13330.2011 "SNiP 2.06.15-85. Engineering protection of territories from flooding and flooding"
ConsultantPlus: note.
The SP 131.13330.2011 referred to in this document was subsequently approved and issued with the number SP 131.13330.2012.
SP 131.13330.2011 "SNiP 23-01-99*. Building climatology"
GOST R 50571.1-2009. Low voltage electrical installations
GOST R 50571.13-96. Electrical installations of buildings. Part 7. Requirements for special electrical installations. Section 706
GOST R 50571.15-97. Electrical installations of buildings. Part 5. Selection and installation of electrical equipment. Chapter 52
GOST 12.1.005-88. System of labor safety standards. General sanitary and hygienic requirements for the air of the working area
GOST 17.1.1.01-77. Protection of Nature. Hydrosphere. Use and protection of waters. Basic terms and definitions
GOST 14254-96. Degrees of protection provided by enclosures (IP code)
GOST 15150-69*. Machines, devices and other technical products. Versions for different climatic regions. Categories, conditions of operation, storage and transportation in terms of the impact of environmental climatic factors
GOST 19179-73. Land hydrology. Terms and Definitions
GOST 25150-82. Sewerage. Terms and Definitions.
Note. When using this set of rules, it is advisable to check the effect of reference standards and classifiers in the public information system - on the official website of the national body of the Russian Federation for standardization on the Internet or according to the annually published information index "National Standards", which was published as of January 1 of the current year , and according to the corresponding monthly published information signs published in the current year. If the referenced document is replaced (modified), then when using this set of rules, one should be guided by the replaced (modified) document. If the referenced material is canceled without replacement, the provision in which the link to it is given applies to the extent that this link is not affected.
3. Terms and definitions
This set of rules uses the terms and definitions in accordance with GOST 17.1.1.01, GOST 25150, GOST 19179, as well as the terms with the corresponding definitions given in Appendix A.
4. General provisions
4.1. The choice of schemes and systems for sewerage of objects should be made taking into account the requirements for wastewater treatment, climatic conditions, terrain, geological and hydrological conditions, the existing situation in the drainage system and other factors.
4.2. When designing, it is necessary to consider the feasibility of cooperating the sewerage systems of facilities, take into account the economic and sanitary assessments of existing structures, provide for the possibility of their use and intensification of their work.
4.3. It is allowed to treat industrial and municipal wastewater jointly or separately, depending on their nature and subject to maximum reuse.
4.4. Sewerage projects of facilities, as a rule, should be linked to the scheme of their water supply, with mandatory consideration of the possibility of using treated wastewater and rainwater for industrial water supply and irrigation.
4.5. When choosing a sewerage scheme for industrial enterprises, it is necessary to take into account:
the possibility of reducing the volume of polluted wastewater generated in technological processes through the introduction of waste-free and water-free industries, the installation of closed water management systems, the use of air cooling methods, etc.;
the possibility of local treatment of wastewater streams in order to extract individual components;
the possibility of consistent use of water in various technological processes with different requirements for its quality;
conditions for the discharge of industrial wastewater into water bodies or into the sewerage system of a settlement or other water user;
conditions for the removal and use of sediments and wastes generated during wastewater treatment.
4.6. Combining industrial wastewater flows with various pollutants is allowed if their joint treatment is expedient.
In this case, it is necessary to take into account the possibility of chemical processes occurring in the communications with the formation of gaseous or solid products.
4.7. When connecting sewer networks of subscribers that are not related to the housing stock, outlets with control wells located outside the territory of subscribers should be provided for in the networks of a settlement.
It is necessary to provide devices for measuring the flow of wastewater discharged from each enterprise, if the subscriber has a significantly open water balance, at least in the following cases:
if the subscriber is not connected to a centralized water supply system or has (or may have) water supply from several sources;
if during the production process more than 5% of the water consumption consumed from the water supply is added or withdrawn.
Combining industrial wastewater from several enterprises is allowed after the control well of each enterprise.
4.8. Industrial wastewater to be jointly discharged and treated with domestic wastewater of a settlement must meet the current requirements for the composition and properties of wastewater accepted into the sewerage system of a settlement.
Industrial wastewater that does not meet the specified requirements must be subjected to preliminary treatment. The degree of such cleaning should be agreed with the organization (organizations) operating the sewerage system and treatment facilities of the settlement (or, in the absence of such, with the organization designing this sewerage system).
4.9. It is forbidden to provide for the discharge into water bodies of rain, melted water and irrigation water untreated to the established standards, which are organized in an organized way from residential areas and enterprise sites.
4.10. When designing treatment facilities for combined and semi-separate sewerage systems that carry out joint disposal for treatment of all types of wastewater, including surface runoff from residential areas and enterprise sites, one should be guided by the instructions of this set of rules, as well as other regulatory documents regulating the operation of these systems, including including regional ones.
4.11. The most polluted part of the surface runoff, which is formed during periods of rainfall, snowmelt and from the washing of road surfaces, should be diverted to the treatment facilities, in the amount of at least 70% of the annual runoff for residential areas and sites of enterprises that are close to them in terms of pollution, and in total the volume of runoff from the sites of enterprises, the territory of which may be contaminated with specific substances with toxic properties or a significant amount of organic substances.
For most settlements of the Russian Federation, these conditions are met when designing treatment facilities to receive runoff from low-intensity, often repeated rains with a period of a single excess of the calculated rain intensity of 0.05 - 0.1 years.
4.12. Surface wastewater from the territories of industrial zones, construction sites, warehouses, vehicle fleets, as well as highly polluted areas located in the residential areas of cities and towns (petrol stations, parking lots, bus stations, shopping centers), before being discharged into rain sewers or centralized the public sewerage system must be cleaned at local treatment facilities.
4.13. When determining the conditions for the release of surface runoff from residential areas and sites of enterprises into water bodies, one should be guided by the standards of the Russian Federation for the conditions of discharge of urban wastewater.
The choice of a surface runoff diversion and treatment scheme, as well as the design of treatment facilities, is determined by its qualitative and quantitative characteristics, diversion conditions, and is carried out on the basis of an assessment of the technical feasibility of implementing one or another option and a comparison of technical and economic indicators.
4.14. When designing rainwater sewerage facilities for populated areas and industrial sites, it is necessary to consider the option of using treated wastewater for industrial water supply, watering or irrigation.
4.15. The main technical solutions used in the projects, the sequence of their implementation should be justified by a technical and economic comparison of possible options, taking into account sanitary, hygienic and environmental requirements.
4.16. When designing sewerage networks and structures, progressive technical solutions, mechanization of labor-intensive work, automation of technological processes, industrialization of construction and installation works through the use of structures, structures and factory-made products, etc. should be provided.
Measures should also be envisaged for energy saving, as well as for the maximum possible use of secondary energy resources of wastewater treatment plants, disposal of treated water and sludge.
It is necessary to ensure appropriate safety and sanitary and hygienic working conditions during operation and performance of preventive and repair work.
4.17. The locations of sewage facilities and the passage of communications, as well as the conditions and places for the release of treated wastewater and surface runoff into water bodies, must be coordinated with local authorities, organizations exercising state sanitary supervision and protection of fish stocks, as well as with other bodies, in accordance with the legislation of the Russian Federation, and the places of release into navigable water bodies and the sea - with the relevant authorities of the river and sea fleet.
4.18. The reliability of the sewerage system is characterized by maintaining the required design capacity and degree of wastewater treatment when changing (within certain limits) the wastewater flow rate and the composition of pollutants, the conditions for their discharge into water bodies, in conditions of power outages, possible accidents in communications, equipment and structures, production of planned repairs, situations associated with special natural conditions (seismic, subsidence of soils, "permafrost", etc.).
4.19. To ensure the uninterrupted operation of the sewage system, the following measures should be provided:
appropriate reliability of power supply to sewage facilities (two independent sources, stand-alone stand-alone power plant, batteries, etc.);
duplication of communications, arrangement of bypass lines and bypasses, switching on parallel pipelines, etc.;
arrangement of emergency (buffer) tanks with subsequent pumping out of them in the normal mode;
sectioning of parallel operating structures, with the number of sections providing the necessary and sufficient efficiency of action when one of them is turned off for repair or maintenance;
redundancy of working equipment of one purpose;
providing the necessary power reserve, throughput, capacity, strength, etc. equipment and structures (determined by technical and economic calculations);
determination of the permissible reduction in the throughput of the system or the efficiency of wastewater treatment in emergency situations (in agreement with the supervisory authorities).
The application of the above measures should be worked out during the design process, taking into account the responsibility of the object.
4.20. Sanitary protection zones from sewer facilities to the boundaries of residential buildings, sections of public buildings and food industry enterprises, taking into account their future expansion, should be taken in accordance with sanitary standards, and cases of deviation from them should be agreed with the sanitary and epidemiological supervision authorities.
5. Estimated costs of urban wastewater.
Hydraulic calculation of sewer networks.
Specific costs, coefficients of unevenness
and estimated wastewater costs
5.1. General instructions
5.1.1. When designing sewerage systems in settlements, the estimated specific average daily (per year) disposal of domestic wastewater from residential buildings should be taken equal to the calculated specific average daily (per year) water consumption in accordance with SP 31.13330, excluding water consumption for irrigation of territories and green spaces.
5.1.2. The specific water disposal for determining the estimated wastewater flow rates from individual residential and public buildings, if necessary, taking into account concentrated costs, should be taken in accordance with SP 30.13330.
5.1.3. The amount of wastewater from industrial enterprises and the coefficients of non-uniformity of their inflow should be determined according to technological data with an analysis of the water management balance in terms of possible water circulation and reuse of wastewater, in the absence of data - according to aggregated water consumption rates per unit of product or raw material or according to data from similar enterprises.
From the total amount of wastewater from enterprises, it is necessary to allocate the costs accepted in the sewerage of a settlement or other water user.
5.1.4. Specific wastewater disposal in non-sewered areas should be taken as 25 l / day per inhabitant.
5.1.5. The estimated average daily wastewater consumption in a settlement should be determined as the sum of the costs established according to 5.1.1 - 5.1.4.
The amount of wastewater from local industries serving the population, as well as unaccounted expenses, is allowed (if justified) to be taken additionally in the amount of 6 - 12% and 4 - 8%, respectively, of the total average daily water discharge of the settlement (with appropriate justification).
5.1.6. Estimated daily wastewater discharges should be taken as the product of the average daily (per year) discharge according to 5.1.5 by the daily unevenness coefficients adopted in accordance with SP 31.13330.
5.1.7. The estimated total maximum and minimum wastewater discharges, taking into account daily, hourly and intrahourly unevenness, should be determined based on the results of computer simulation of sewerage systems, taking into account the schedules of wastewater inflow from buildings, residential areas, industrial enterprises, the length and configuration of networks, the presence of pumping stations, etc. or according to the actual water supply schedule during the operation of similar facilities.
In the absence of the specified data, it is allowed to take the general coefficients (maximum and minimum) according to Table 1.
Table 1
Estimated total maximum and minimum costs
wastewater, taking into account the daily, hourly
and intrahour unevenness
Overall ratio
uneven inflow
wastewater Average wastewater consumption, l/s
5 10 20 50 100 300 500 1000 5000
and more
Maximum at 1%
availability 3.0 2.7 2.5 2.2 2.0 1.8 1.75 1.7 1.6
Minimum at 1%
availability 0.2 0.23 0.26 0.3 0.35 0.4 0.45 0.51 0.56
Maximum at 5%
availability 2.5 2.1 1.9 1.7 1.6 1.55 1.5 1.47 1.44
Minimum at 5%
availability 0.38 0.46 0.5 0.55 0.59 0.62 0.66 0.69 0.71
Notes. 1. General wastewater inflow rates given in
table, it is allowed to accept with the amount of industrial waste
water, not exceeding 45% of the total flow.
2. With an average wastewater flow rate of less than 5 l / s, the maximum
coefficient of unevenness is taken 3.
3. 5% coverage suggests a possible increase
(decrease) consumption on average 1 time per day, 1% - 1 time per day
within 5 - 6 days.
5.1.8. Estimated costs for networks and structures when pumping wastewater should be taken equal to the performance of pumping stations.
5.1.9. When designing drainage communications and facilities for wastewater treatment, one should consider the technical and economic feasibility and sanitary and hygienic possibility of averaging the estimated wastewater flow rates.
5.1.10. The sewerage facilities must be designed to allow the passage of the total calculated maximum flow rate (determined according to 5.1.7) and additional inflow of surface and groundwater, unorganized flowing into gravity sewerage networks through leaks in well hatches and due to groundwater infiltration.
The amount of additional inflow, l / s, is determined on the basis of special surveys or data from the operation of similar facilities, and in their absence - according to the formula
where L is the total length of gravity pipelines to the calculated structure (pipeline alignment), km;
- the value of the maximum daily precipitation, mm (according to SP 131.13330).
Verification calculation of gravity pipelines and channels with a cross section of any shape for the passage of increased flow should be carried out when filling 0.95 height.
5.2. Hydraulic calculation of sewer networks
5.2.1. Hydraulic calculation of gravity sewer pipelines (trays, channels) should be performed for the estimated maximum second flow rate of wastewater according to tables, graphs and nomograms. The main requirement in the design of gravity collectors is the omission of estimated flow rates at self-cleaning speeds of transported wastewater.
5.2.2. Hydraulic calculation of pressure sewer pipelines should be carried out in accordance with SP 31.13330.
5.2.3. Hydraulic calculation of pressure pipelines transporting raw and digested sludge, as well as activated sludge, should be made taking into account the mode of movement, physical properties and composition of the sludge. With a humidity of 99% or more, the sediment obeys the laws of movement of the waste liquid.
5.2.4. Hydraulic slope i when calculating pressure silt pipelines with a diameter of 150 - 400 mm is determined by the formula
where is the moisture content of the sediment, %;
V - sediment movement speed, m/s;
D - pipeline diameter, m;
- pipeline diameter, cm;
- friction resistance coefficient along the length, determined by the formula
For pipelines with a diameter of 150 mm, the value should be increased by 0.01.
5.3. Smallest pipe diameters
5.3.1. The smallest diameters of pipes of gravity networks should be taken, mm:
for a street network - 200, an intra-quarter network, a network of household and industrial sewerage - 150;
for a rain street network - 250, intra-quarter - 200.
The smallest diameter of pressure silt pipelines is 150 mm.
Notes. 1. In settlements with a wastewater flow rate of up to 300 m3 / day, it is allowed to use pipes with a diameter of 150 mm for the street network.
2. For the production network, with appropriate justification, it is allowed to use pipes with a diameter of less than 150 mm.
5.4. Estimated speeds and filling of pipes and channels
5.4.1. In order to avoid silting of sewer networks, the design speeds of wastewater movement should be taken depending on the degree of filling of pipes and channels and the size of suspended solids contained in wastewater.
The minimum flow rates of wastewater in domestic and storm sewer networks with the highest calculated pipe filling should be taken from Table 2.
table 2
Estimated minimum wastewater flow rates
depending on the maximum degree of filling of the pipes
in the domestic and rain sewer network
│ Diameter, mm │ Velocity V , m/s, when filling H/D │
│ │ min │
│ ├───────────┬───────────┬───────────┬───────────┤
│ │ 0,6 │ 0,7 │ 0,75 │ 0,8 │
│150 - 250 │ 0,7 │ - │ - │ - │
├─────────────────────────┼───────────┼───────────┼───────────┼───────────┤
│300 - 400 │ - │ 0,8 │ - │ - │
├─────────────────────────┼───────────┼───────────┼───────────┼───────────┤
│450 - 500 │ - │ - │ 0,9 │ - │
├─────────────────────────┼───────────┼───────────┼───────────┼───────────┤
│600 - 800 │ - │ - │ 1,0 │ - │
├─────────────────────────┼───────────┼───────────┼───────────┼───────────┤
│900 │ - │ - │ 1,10 │ - │
├─────────────────────────┼───────────┼───────────┼───────────┼───────────┤
│1000 - 1200 │ - │ - │ - │ 1,20 │
├─────────────────────────┼───────────┼───────────┼───────────┼───────────┤
│1500 │ - │ - │ - │ 1,30 │
├─────────────────────────┼───────────┼───────────┼───────────┼───────────┤
│St. 1500 │ - │ - │ - │ 1.50 │
├─────────────────────────┴───────────┴───────────┴───────────┴───────────┤
│ Notes. 1. For industrial wastewater, the lowest speeds│
│accept in accordance with the guidelines for building design│
│enterprises of individual industries or by operational│
│data. │
│ 2. For industrial wastewater, similar in nature to suspended │
│substances to household, take the lowest rates as for household waste│
│water. │
│ 3. For rainwater drainage at P = 0.33 years, the lowest speed│
│take 0.6 m/s. │
5.4.2. The minimum design speed of movement of clarified or biologically treated wastewater in trays and pipes is allowed to be 0.4 m/s.
The highest design speed of wastewater should be taken, m / s: for metal and plastic pipes - 8 m / s, for non-metallic (concrete, reinforced concrete and chrysotile cement) - 4 m / s, for rainwater drainage - respectively 10 and 7 m / s .
5.4.3. The estimated speed of movement of non-clarified wastewater in the siphons must be taken at least 1 m / s, while at the places where the wastewater approaches the siphon, the speeds should not exceed the speeds in the siphon.
5.4.4. The lowest calculated speeds of movement of raw and digested sludge, as well as compacted activated sludge in pressure sludge pipelines should be taken from Table 3.
Table 3
Estimated minimum speeds of raw
and digested sludge, as well as compacted
activated sludge in pressure sludge pipelines
┌─────────────────────────┬───────────────────────────────────────────────┐
│ Sludge moisture, % │ V , m/s, at │
│ │ min │
│ ├───────────────────────┬───────────────────────┤
│ │ D = 150 - 200 mm │ D = 250 - 400 mm │
│ 98 │ 0,8 │ 0,9 │
├─────────────────────────┼───────────────────────┼───────────────────────┤
│ 97 │ 0,9 │ 1,0 │
├─────────────────────────┼───────────────────────┼───────────────────────┤
│ 96 │ 1,0 │ 1,1 │
├─────────────────────────┼───────────────────────┼───────────────────────┤
│ 95 │ 1,1 │ 1,2 │
├─────────────────────────┼───────────────────────┼───────────────────────┤
│ 94 │ 1,2 │ 1,3 │
├─────────────────────────┼───────────────────────┼───────────────────────┤
│ 93 │ 1,3 │ 1,4 │
├─────────────────────────┼───────────────────────┼───────────────────────┤
│ 92 │ 1,4 │ 1,5 │
├─────────────────────────┼───────────────────────┼───────────────────────┤
│ 91 │ 1,7 │ 1,8 │
├─────────────────────────┼───────────────────────┼───────────────────────┤
│ 90 │ 1,9 │ 2,1 │
└─────────────────────────┴───────────────────────┴───────────────────────┘
5.4.5. The highest speeds of movement of rainwater and industrial wastewater allowed to be discharged into water bodies in channels should be taken according to Table 4.
Table 4
The highest speeds of movement of rain and permissible
to the descent into the reservoirs of industrial wastewater in the channels
┌────────────────────────────────┬────────────────────────────────────────┐
│ Soil or type of channel fastening │Maximum speed in channels, │
│ │ m/s, with flow depth from 0.4 to 1 m │
│Fixing with concrete slabs │ 4 │
├────────────────────────────────┼────────────────────────────────────────┤
│Limestones, medium sandstones │ 4 │
├────────────────────────────────┼────────────────────────────────────────┤
│Sodding: │ │
│ flat │ 1 │
│ about the wall │ 1.6 │
├────────────────────────────────┼────────────────────────────────────────┤
│Paving: │ │
│ single │ 2 │
│ double │ 3 - 3.5 │
├────────────────────────────────┴────────────────────────────────────────┤
│ Note. With a flow depth of less than 0.4 m, the speed values│
│ wastewater movements are taken with a coefficient of 0.85; at a depth above
│1 m - with a coefficient of 1.24. │
└─────────────────────────────────────────────────────────────────────────┘
5.4.6. Estimated filling of pipelines and channels of any section (except rectangular) should be taken no more than 0.7 diameter (height).
Estimated filling of channels of rectangular cross section is allowed to take no more than 0.75 height.
For rain sewer pipelines, it is allowed to accept full filling, including for short-term discharges of wastewater.
5.5. Slopes of pipelines, channels and trays
5.5.1. The smallest slopes of pipelines and channels should be taken depending on the permissible minimum flow rates of wastewater.
The smallest slopes of pipelines for all sewerage systems should be taken for pipes with diameters: 150 mm - 0.008; 200 mm - 0.007.
Depending on local conditions, with appropriate justification, for individual sections of the network it is allowed to accept slopes for pipes with diameters: 200 mm - 0.005; 150 mm - 0.007.
The connection slope from the storm water inlets should be taken as 0.02.
5.5.2. In an open rain network, the smallest slopes of carriageway trays, ditches and drainage ditches should be taken from Table 5.
Table 5
The smallest slopes of the trays of the carriageway,
ditches and drainage ditches
Name Smallest slope
Trays covered with asphalt concrete 0.003
Trays covered with paving stones or crushed stone coating 0.004
Cobblestone pavement 0.005
Separate trays and cuvettes 0.006
Drainage ditches 0.003
Polymer, polymer concrete trays 0.001 - 0.005
5.5.3. The smallest dimensions of ditches and ditches of trapezoidal section shall be taken as follows: width along the bottom - 0.3 m; depth - 0.4 m.
6. Sewer networks and structures on them
6.1. General instructions
6.1.1. Gravity (non-pressure) sewer networks are designed, as a rule, in one line.
Notes. 1. When parallel laying gravity sewer collectors, the installation of bypass pipelines in separate sections (where possible) should be considered to ensure their repair in emergency situations.
2. It is allowed to transfer to emergency tanks (with subsequent pumping out) or, upon agreement with the Sanitary and Epidemiological Supervision authorities, to rain collectors equipped with treatment facilities at outlets. When bypassing into rain collectors, gates to be sealed must be provided.
6.1.2. The reliability of the operation of non-pressure networks (collectors) of sewage is determined by the corrosion resistance of the material of pipes (channels) and butt joints both to the transported waste water and to the gaseous medium in the surface space.
6.1.3. The location of networks on master plans, as well as the minimum distances in the plan and at intersections from the outer surface of pipes to structures and utilities should be taken in accordance with SP 42.13330.
6.1.4. Sewage pressure pipelines should be designed taking into account the characteristics of the transported waste liquid (aggressiveness, high content of suspended particles, etc.). It is necessary to provide for additional measures and design solutions that ensure prompt repair or replacement of pipeline sections during operation, as well as the use of appropriate non-clogging pipeline valves.
Discharge of sewage from the area to be emptied during repairs should be provided without discharge into a water body - into a special container with subsequent pumping into the sewer network or removal by a tank truck.
6.1.5. The design of deep-seated collectors laid by shield penetration or mining must be carried out in accordance with SP 43.13330.
6.1.6. Ground and elevated laying of sewer pipelines in the territory of settlements is not allowed.
When laying sewer pipelines outside settlements and on the sites of industrial enterprises, ground or above-ground laying of pipelines is allowed with the necessary requirements for operational reliability and safety, taking into account the strength characteristics of the pipe when exposed to wind loads on its supports, etc.
6.1.7. The material of pipes and channels used in sewerage systems must be resistant to both the transported waste liquid and gas corrosion in the upper part of the collectors.
In order to prevent gas corrosion, it is necessary to provide for appropriate protection of pipes and measures to prevent the conditions for the formation of aggressive environments (network ventilation, exclusion of stagnant zones, etc.).
6.1.8. The type of pipe base must be taken depending on the bearing capacity of soils and loads, as well as the strength characteristics of the pipe. Backfilling of pipelines must take into account the bearing capacity and deformation of the pipe.
6.2. Bends, connections and pipe depths
6.2.1. Connections and turns on collectors should be provided in wells.
The radius of the tray turning curve must be taken not less than the diameter of the pipe, on collectors with a diameter of 1200 mm or more - at least five diameters with the installation of manholes at the beginning and end of the curve.
6.2.2. The angle between the connecting and outlet pipe must be at least 90°.
Note. When connecting with a difference, any angle between the connected and outlet pipelines is allowed.
6.2.3. Connections of pipelines of different diameters in wells should be provided along the pipes. When justified, it is allowed to connect pipes according to the calculated water level.
6.2.4. The smallest depth of laying sewer pipelines must be determined by thermal calculation or taken on the basis of experience in operating networks in the area.
In the absence of data, the minimum depth of the pipeline tray may be taken for pipes with a diameter of up to 500 mm - 0.3 m, and for pipes of a larger diameter - 0.5 m less than the greater depth of penetration into the soil of zero temperature, but not less than 0.7 m to the top pipes, counting from the surface of the earth or layout (to avoid damage by ground transport).
6.2.5. The maximum depth of laying pipes is determined by calculation, depending on the material of the pipes, their diameter, soil conditions, and the method of work.