This standard specifies the requirements for water quality, sampling and monitoring of sewage discharged into urban sewers, and is applicable to the drainage safety management of drainage households and individuals who discharge sewage into urban sewers.
According to the treatment degree of the sewage treatment plant at the end of the urban sewer, this standard divides the limit values of the control items into three grades: A, B and C. Among them, when the sewage treatment plant at the end of the urban sewer adopts the regeneration treatment process, the sewage connection standard implements the A-level standard; When the sewage treatment plant at the end of the urban sewer adopts the secondary treatment process, the sewage connection standard shall be implemented according to the B standard; When the primary treatment process is adopted in the sewage treatment plant at the end of urban sewers, the sewage connection standard is class C.
If there is no urban sewage treatment facility at the end of the sewer, the current national and local pollutant discharge standards must be implemented according to the final destination, and the requirements of Class C should be met.
If the quality of outdoor sewage cannot meet the requirements of the corresponding limits in this standard, it must be pretreated. After the concentration is reduced by dilution method, it shall not be discharged into urban sewers.
The clauses contained in the following standards constitute the clauses of this standard by reference in this standard. When this standard was published, all the versions indicated were valid. All standards will be revised, and all parties using this standard should explore the possibility of using the latest version of the following standards.
GB 5084- 1992 water quality standard for farmland irrigation
Water quality. Determination of pH value. Glass electrode method.
GB/T 7466- 1987 determination of total chromium in water
Water quality. Determination of hexavalent chromium. Diphenyl carbohydrazide spectrophotometric method.
Water quality. Determination of total mercury. Cold atomic absorption spectrophotometry.
Determination of total mercury in water quality-Dithizone spectrophotometric method with potassium permanganate-potassium persulfate digestion method
Water quality-determination of lead-dithizone spectrophotometric method
GB/T 747 1- 1987 determination of cadmium in water-dithizone spectrophotometric method
Water quality-determination of zinc-dithizone spectrophotometric method
Water quality, determination of copper, sodium diethyldithiocarbamate spectrophotometric method
Water quality. Determination of copper, zinc, lead and cadmium. Atomic absorption spectrophotometry.
Water quality. Determination of ammonium. Distillation and titration.
Water quality. Determination of ammonium. Nessler's reagent colorimetry.
Water quality-Determination of fluoride-Ion-selective electrode method
Water quality-determination of total arsenic-silver diethyldithiocarbamate spectrophotometric method
Water quality-Determination of cyanide-Part 2: Determination of cyanide.
Water quality-Determination of five-day biochemical oxygen demand-Dilution and inoculation method
Water quality. Determination of volatile phenol. 4- aminoantipyrine spectrophotometric method after distillation.
Water quality. Determination of volatile phenol. Bromination volumetric method after distillation.
Water quality-Determination of anionic surfactants-Methylene blue spectrophotometric method
GB 8703- 1988 radiation protection regulations
GB 8978- 1996 integrated wastewater discharge standard
Gb/t11889-1989 water quality; Determination of aniline compounds-N-( 1- naphthyl) ethylenediamine azo spectrophotometric method
Gb/t11890-1989 water quality-determination of benzene series-gas chromatography
Gb/t11893-1989 determination of total phosphorus in water; Ammonium molybdate spectrophotometry was approved by China People * * and Ministry of Construction 1999-0 1-26, and implemented by 1999-08-0 1.
Gb/t11899-1989 determination of sulfate in water quality gravimetric method
Gb/t11901-1989 gravimetric method for determination of suspended solids in water.
Gb/t11902-1989 determination of selenium in water; 2,3-diaminonaphthalene fluorescence method.
Gb/t11903-1989 determination of water color.
Gb/t11906-1989 determination of manganese in water; potassium periodate spectrophotometric method.
Gb/t1191kloc-0/989 determination of nickel in water quality-dimethylglyoxime spectrophotometric method
Gb/t1191-1989 determination of iron and manganese in water-flame atomic absorption spectrophotometry
Gb/t11912-1989 determination of nickel in water quality-flame atomic absorption spectrophotometry.
Gb/t11914-1989 determination of chemical oxygen demand in water-dichromate method.
Gb/t13192-1991water quality-determination of organophosphorus pesticides-gas chromatography
Gb/t13194-1991water quality-determination of nitrobenzene, nitrotoluene, nitrochlorobenzene and dinitrotoluene-gas chromatography
Gb/t13195-1991use thermometer or inverted thermometer to measure water quality and temperature.
Gb/t13196-1991determination of sulfate in water; flame atomic absorption spectrophotometry.
Gb/t13199-1991determination of anionic detergents for water quality-potentiometric titration.
GB/T 15505- 1995 determination of selenium in water-graphite furnace atomic absorption spectrophotometry
Water quality-determination of petroleum and animal and vegetable oils-infrared photometric method
GB/T 16489- 1996 determination of sulfide in water-methylene blue spectrophotometric method
CJ 26.3- 199 1 Volumetric method for determination of precipitable solids in municipal sewage
CJ 26.7- 199 1 Determination of municipal sewage oil by gravimetric method
CJ 26.10-1991Determination of Sulfide in Municipal Sewage
CJ 26.25- 199 1 Determination of Ammonia Nitrogen in Municipal Sewage
CJ 3025- 1993 Sludge Discharge Standard for Urban Sewage Treatment Plants
legal ground
Regulations on urban drainage and sewage treatment
Article 21 Enterprises and institutions that discharge sewage into urban drainage facilities and individual industrial and commercial households engaged in industrial, construction, catering, medical and other activities (hereinafter referred to as drainage households) shall apply to the competent department of urban drainage for a permit to discharge sewage into the drainage pipe network. The competent department of urban drainage shall, in accordance with the relevant national standards, conduct key inspections on matters affecting the safe operation of urban drainage and sewage treatment facilities.
Drainage households shall discharge sewage in accordance with the requirements of the permit for discharging sewage into the drainage pipe network.
Twenty-ninth urban sewage treatment facilities maintenance and operation units shall ensure that the effluent quality meets the national and local discharge standards, and shall not discharge unqualified sewage.
The maintenance and operation unit of urban sewage treatment facilities shall, in accordance with the relevant provisions of the state, test the quality of inlet and outlet water, submit information such as sewage treatment quality, quantity and reduction of major pollutants to the competent department of urban drainage and the competent department of environmental protection, and submit information such as production and operation costs to the competent department of urban drainage in accordance with the relevant provisions and maintenance and operation contracts.
The maintenance and operation unit of urban sewage treatment facilities shall submit relevant cost information to the competent price department in accordance with the relevant provisions of the state.
The competent department of urban drainage shall consider the reduction of major pollutants when approving the operation cost of urban sewage treatment.