CJ 3082-1999 Water Quality Standard for Sewage Discharge into Urban Sewers
Some standard content:
People's Republic of China
Sewage discharge into
Town construction industry standard
CJ 3082—1999
Municipal sewer water quality standard
Discharge standard for municipal wastewater1999-01-26issued
Issued by the Ministry of Construction of the People's Republic of China
1999-08-01implemented
CJ 3082—1999
Cited standards·········
3Definition
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Technical content
On c66608000808080006006008c0880080000080060008e800606680060 00006006660600080068680000800600006688006008006 Water Quality Monitoring
Appendix A. Standard Appendix Dissolved Solids
Appendix B (Standard Appendix)
CJ3082-1999
This standard is a revision of CJ18-1986 "Water Quality Standard for Sewage Discharged into Municipal Sewers". The main contents of the revision: six control items are added compared with the original standard, and the control of non-metallic boron is cancelled. In order to prevent the pollution of water bodies by drainage from municipal sewer systems without sewage treatment plants, seven control items are specified in brackets with two control concentrations. The municipal construction and drainage management department is responsible for the supervision and implementation of this standard. When the implementation of this standard fails to achieve the protection of drainage facilities and meet the requirements of water environment functions, each city may formulate local standards based on the principles of this standard. This standard replaces CJ18-1986 from the date of implementation. Appendix A and Appendix B of this standard are the appendices of the standard. This standard is proposed by the Standard and Quota Research Institute of the Ministry of Construction. This standard is under the jurisdiction of the Water Supply and Drainage Product Standardization Technical Committee of the Ministry of Construction. This standard is drafted by the Beijing Municipal Engineering Management Office. The main drafters of this standard are Chen Yihua, Wang Lan, Wang Chunshun, and Jiang Lan. This standard was first issued in 1986 and revised for the first time in 1998. This standard is entrusted to the Beijing Municipal Engineering Management Office for interpretation. 1 Scope
People's Republic of China
Town Construction Industry Standard
Water Quality Standard for Sewage Discharged into Municipal Sewers
Discharge standard for municipal wastewaterCJ 3082-1999
Replaces CJ18-1986
This standard specifies the maximum allowable concentrations of 35 harmful substances in sewage discharged into municipal sewers. This standard applies to drainage households that discharge sewage into municipal sewers. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards are subject to revision, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB 5084-1992
Standard for water quality for irrigation of farmland
GB/T6920—1986
GB/T7466—1987
GB/T7467-1987
GB/T 7468-1987
GB/T7469-1987
GB/T 7470—1987
GB/T7471-1987
GB/T7472—1987
GB/T 7474—1987
GB/T7475—1987
GB/T7478—1987
GB/T7479—1987
GB/T 7484-1987
GB/T 7485-1987
GB/T 7487-1987
GB/T 7488-1987
GB/T 74901987
GB/T7491—1987
GB/T7494—1987
Determination of pH value
Determination of total chromium
Determination of hexavalent chromium
Glass electrode method
Diphenylcarbonyl dithiocyanate spectrophotometry
Determination of total mercury
Cold atomic absorption spectrophotometry
Determination of total mercury
Determination of lead
Determination of cadmium
Determination of zinc
Determination of copper
Potassium permanganate-potassium persulfate digestion method Dithiol spectrophotometry Dithiol spectrophotometry
Dithiol spectrophotometry
Dithiol spectrophotometry
Sodium dithiocarbamate spectrophotometry
Determination of copper, zinc, lead and cadmiumAtomic absorption spectrophotometryDetermination of ammonium
Determination of ammonium
Distillation and titration
Nessler's reagent colorimetry
Determination of fluorideIon selective electrode method
Determination of total arsenicSilver diethyldithiocarbamate spectrophotometryDetermination of cyanidePart II: Determination of cyanideDetermination of five-day biochemical oxygen demand (BOD:) by dilution and inoculationDetermination of volatile phenolsSpectrophotometric method with 4-aminoantipyrine after distillationDetermination of volatile phenols after distillationBromide volumetric methodDetermination of anionic surfactantsMethylene blue spectrophotometry GB 8703-1988
Radiation Protection Regulations
Integrated Sewage Discharge Standard
GB 8978-1996
GB/T11889-1989
Water qualityDetermination of aniline compoundsN-(1-)ethylenediamineazo spectrophotometric methodGB/T11890—1989
GB/T11893—1989
Water qualityDetermination of benzene seriesGas chromatography
Ammonium molybdate spectrophotometric method
Determination of total phosphorus
Approved by the Ministry of Construction of the People's Republic of China on January 26, 1999, implemented on August 1, 1999
GB/T11899-1989
GB/T 11901-1989
GB/T 11902-1989
GB/T11903-1989
GB/T 11906-1989
GB/T11910-1989
GB/T 11911-1989
GB/T11912-1989
GB/T 11914-1989
GB/T 13192-1991
GB/T13194—1991
GB/T 13195—1991
GB/T13196—1991
GB/T 13199-1991
GB/T 15505-1995
GB/T16488-1996
GB/T16489—1996
CJ 26. 3-1991
CJ 26. 7-1991
CJ 26.10-1991
CJ 26. 25-1991
CJ 3025-1993
3Definition
Municipal sewage
Municipal sewage
Determination of sulfate by gravimetric method
Determination of suspended solids by gravimetric method
Determination of selenium 2,3-Diaminonaphthalene fluorescence method
Determination of color
Determination of manganesePotassium periodate spectrophotometry
Determination of nickel
Diacetyl intestinal spectrophotometry
Determination of iron and manganeseFlame atomic absorption spectrophotometryDetermination of nickelFlame atomic absorption spectrophotometryDetermination of chemical oxygen demandDichromate method
Determination of organophosphorus pesticidesGas chromatography
Determination of nitrobenzene, nitrotoluene, nitrochlorobenzene and dinitrotolueneGas chromatographyDetermination of water temperatureThermometer or inversion thermometer determination method Determination of sulfate Flame atomic absorption spectrophotometry Determination of anion detergent Potentiometric titration Determination of selenium Graphite furnace atomic absorption spectrophotometry Determination of petroleum and animal and vegetable oils Infrared photometry Determination of sulfide Methylene blue spectrophotometry Determination of easily precipitated solids Volumetric method
Determination of oil Gravimetric method
City sewage stone
Determination of sulfide
Determination of ammonia nitrogen in municipal sewage
Emission standard of sewage sludge from municipal sewage treatment plants 3.1 Sewage: water discharged from life and production with certain pollution. 3.2
City sewer: refers to the pipelines and ditches for conveying sewage. It includes sewage discharge channels, ditches, etc. 3.3 Drainage households refer to units or individuals that discharge sewage into city sewers. 4 Technical content
4.1 General provisions
4.1.1 It is strictly forbidden to discharge sewage that corrodes municipal sewer facilities. 4.1.2
It is strictly prohibited to dump
, snow, feces, industrial waste residues and materials that are easy to agglomerate and cause sewer blockage into the municipal sewer. 4.1.3
3It is strictly prohibited to discharge highly toxic substances, flammable, explosive substances and harmful gases into the municipal sewer. 4.1.4 Wastewater containing pathogens from medical and health care, biological products, scientific research, meat processing, etc. must be strictly disinfected and treated. In addition to complying with this standard, it must also be implemented in accordance with relevant professional standards. 4.1.5 Radioactive wastewater discharged into the municipal sewer must comply with GB8703 in addition to complying with this standard. 4.1.6 Sewage with water quality exceeding this standard shall be pre-treated in accordance with relevant regulations and requirements. It shall not be discharged into the municipal sewer by dilution to reduce its concentration.
4.2 Water quality standards
The maximum allowable concentration of sewage discharged into the municipal sewer must comply with the provisions of Table 1. No.
Project Name
Suspended Solids
Settled Solids
Mineral Oils
Benzene Series
Cyanide
Sulfide
Volatile Phenol
Biochemical Oxygen Demand (BQDs)
Chemical Oxygen Demand (COD)
Dissolved Solids
Organophosphorus
Fluoride
Note: The values in brackets are applicable to water quality monitoring
Sewage Discharge
Allowable Concentration
150(400)
mL/L·15 min
100(300)
150(500)
Municipal sewer water quality standards
Municipal sewage treatment plant
Municipal sewer system
Hexavalent chromium
Sulfate
Project name
Nitrobenzene
Anionic surfactant (LAS)
Phosphate (in terms of P)
Allowable concentration
2. 0(5. 0)
10.0(20.0)
25.0(35.0)
1. 0(8.0)
Total mercury, total cadmium, hexavalent chromium, total arsenic, and total lead shall be subject to the concentration of random sampling at the drainage outlet of the workshop or treatment equipment. For other control items, the concentration of random sampling at the drainage outlet of the drainage household shall prevail.
All drainage units should have detection wells at their outlets to facilitate sampling, and sewage water volume metering devices should be installed in the wells. The water quality data shall be based on the inspection data of the municipal drainage monitoring department. See Table 2 for water quality inspection methods.
Inspection methods
Suspended matter
Settled solids
Mineral oils
Cyanide
Project name
Glass electrode method
Weight method
Volume method
Weight method
Infrared photometry
Infrared photometry
Inspection method
Determination of cyanide
Method source
GB/T6920
GB/T 11901
GB/T16488
GB/T 16488
GB/T7487
Sulfide
Project Name
Volatile Phenol
Biochemical Oxygen Demand (BODs)
Chemical Oxygen Demand (COD)
Dissolved Solids
Organic Phosphorus
Fluoride
Hexavalent Chromium
Sulfate
Anionic Surface Surfactant (LAS)
Phosphate (in terms of P)
Table 2 (end)
Test methods
Methylene blue spectrophotometric method
Determination of sulfide
4-aminoantipyrine spectrophotometric method after distillation Bromination volumetric method after distillation
Thermometer or inverted thermometer determination method
Dilution and inoculation method
Potassium dichromate method
Gravimetric method
Gas chromatography
N·(1·naphthalene)ethylenediamineazo spectrophotometryIon selective electrode method
Cold atomic absorption spectrophotometry
Potassium permanganate·potassium persulfate digestion method
Atomic absorption spectrophotometry
Dithiol spectrophotometrybZxz.net
Atomic absorption spectrophotometry
Dithiol spectrophotometry Photometry
Atomic absorption spectrophotometry
Disulfide spectrophotometry
Sodium diethyldithiocarbamate spectrophotometryAtomic absorption spectrophotometry
Dithiol spectrophotometry
Diacetyl spectrophotometry
Flame atomic absorption spectrophotometry
Flame atomic absorption spectrophotometry
Flame atomic absorption spectrophotometry
5Br·PADAP photometry
Flame atomic absorption spectrophotometry
Diphenylcarbazide spectrophotometry
Determination of total chromium
2,3.Diaminonaphthalene fluorescence method
Graphite furnace atomic absorption spectrophotometry
Silver diethyldithiocarbamate spectrophotometry Gravimetric method
Flame atomic absorption spectrophotometry|| tt||Distillation and titration method
Nessler's reagent colorimetric method
Determination of ammonia nitrogen
Methylene blue spectrophotometry
Potentiometric titration
Gas chromatography
Ammonium molybdate spectrophotometry
Determination of color
Method source
GB/T16489
GB/T7490||tt| |GB/T7491
GB/T13195
GB/T7488
GB/T11914
Appendix A (Appendix to the standard)
GB/T13192
GB/T11889
GB/T7484
GB/T7468
GB/T74 69
GB/T7475
QB/T7471
GB/T7475
QB/T7470
GB/T7 475
QB/T7474
GB/T7475
GB/T7472
GB/T11910
QB/T 11912
GB/T 11911
GB/T11911
Appendix B
(Appendix to the standard)
GB/T7467
GB/T7466
GB/T11902
GB/T15505
GB/T7485
GB/T11899
GB13196
GB/T7478
QB/T7479
CJ 26.25
GB/T7494
QB13199
GB/T 13194
GB/T11893
GB/T11903
A1 Principle of the method
Appendix A
(Appendix of the standard)
Soluble solids
Put the filtered water sample in an evaporating dish weighed to constant weight and evaporate to dryness, then dry it at 103-105℃ to constant weight. The increased weight is the dissolved solids.
A2 Apparatus
(1) Filter membrane (pore size 0.45um) and matching filter, or medium-speed quantitative filter paper. (2) Oven.
(3) Steam bath or water bath.
A3 Sampling and Sample Preservation
The polyethylene bottles or hard glass bottles used should be cleaned with detergent. Rinse with tap water and distilled water in turn. Before sampling, wash three times with the water sample to be collected. Then, collect 500~1000mL of representative water sample and cover the bottle stopper tightly. The collected water sample should be analyzed and measured as soon as possible. If it needs to be stored, it should be stored in a 4℃ refrigerator, but the longest time should not exceed seven days. No protective agent should be added to prevent the distribution equilibrium of the substance between solid and liquid from being disrupted. A4 Determination steps
(1) Bake the evaporating dish in an oven at 103~105℃ for 30 minutes each time, and weigh it after cooling until constant weight (the difference between two weighings should not exceed 0.0005 g).
(2) Filter the water sample with a 0.45um filter membrane or medium-speed quantitative filter paper. (3) Take an appropriate amount of filtered water sample (e.g. 50 mL) so that the residue volume is greater than 25 mL and place it in the above evaporating dish. Evaporate it to dryness on a steam bath or water bath (the water bath surface should not touch the bottom of the dish). Transfer it to a 103-105℃ oven and bake for 1 hour each time. After cooling, weigh it until constant weight (the difference between two weighings should not exceed 0.000 5 g).
A5 Calculation
Calculate according to the following formula:
Dissolved solids (mg/L) = (AB) × 1.000 × 1 000V
Where: A——dissolved solids + evaporated blood weight, B——evaporating dish weight, β
V——water sample volume, mL.
Note: The results obtained using different filter materials will be different. If necessary, they should be noted in the analysis result report. Appendix B
(Standard Appendix)
Antimony (Sb) is a silvery white metal. In nature, it mainly exists in the form of Sb3+, Sb+ and Sb3-. The hydride of negative trivalent antimony is extremely toxic and unstable in nature. It is easily oxidized and decomposed into metal and water. However, Sb3+ and Sb\+ are easily hydrolyzed and precipitated in weak acid to neutral media, so the concentration of antimony in natural water is extremely low, about 0.2/L on average. Antimony pollution in water mainly comes from wastewater discharged from industries such as mineral processing, metallurgy, electroplating, pharmaceuticals, lead printing, and leather.
(1) Selection of methods
For monitoring of antimony-containing wastewater, the following methods can be selected according to the specific conditions of the laboratory: 5-Br-PADAP photometry, atomic absorption photometry. (2) Sample preservation
Antimony salts are easily precipitated by water. After sampling, hydrochloric acid should be added immediately to acidify to pH ≤ 1 and store in polyethylene plastic bottles. (—) 5-Br-PADAP spectrophotometric method
B1 Overview
（1） Principle of the method
With acetone as a solubilizing agent, in the presence of potassium iodide, in a 0.020.1mol/L hydrochloric acid medium, antimony (III) and 2-(5-bromo-2-pyridyl azo)-5-diethylaminophenol (abbreviated as 5-Br-PADAP) form a stable purple-red complex, the absorbance of which can be measured at a wavelength of 600nm, and its molar absorption coefficient is 5.0×104. The maximum absorption peak of the reagent is at 420nm. The reagent and the complex are very stable. (2) Interference and elimination
2000mgF-, 400mgA13+, 100mgK+, Na+, C1-, 20mgMn2+, Zn2+, 10mgNH+, 4mgCa+, 2mgNO:, SO?-, 0.5mgCd2+, Hg?+, Pb2+, PO-, AsO- in 25mL colorimetric solution do not interfere with the determination. Fe3+, Cu2+, Sn*+, Co2+ with the same amount as antimony produce positive interference, and Cr3+ produces negative interference. In the acidic test solution with tartaric acid and thiourea, potassium borohydride is added to react with the acid to produce new ecological hydrogen, and to generate volatile SbH: with antimony (III), and separate from Fe3+, Cu2+, Sn+, Co2+ and C13+ ions, eliminating their interference with the colorimetric determination. In the reduction separation, (III) equivalent to three times the amount of antimony does not interfere. (3) Scope of application of the method
The minimum detection concentration of antimony measured by this method is 0.05m/L (the antimony concentration corresponding to an absorbance of 0.01), and the upper limit of determination is 1.2mg/L. It is suitable for the determination of antimony in wastewater from industries such as mineral processing, metallurgy, printing, coatings, and pharmaceuticals. B2 Instruments
(1) Spectrophotometer, 10mm colorimetric blood. (2) Antimony hydrogen separation device, as shown in Figure B1. B3 Reagents
1100mL volumetric generation bottle 2-Potassium borohydride storage place; 3-Rubber stopper 4-Latex hose, 5-Plastic tube (one end is pulled into a capillary shape, and the inner diameter of the gas outlet is less than 1mm); 6-14mm standard ground mouth; 7-Absorption liquid, the height is not less than 5cm Figure B1 Antimony hydrogen generation absorption device
(1) Antimony standard stock solution: Accurately weigh 0.5000g of pure metallic antimony (≥99.9%) and place it in a 50mL beaker, add 12.5mL sulfuric acid (p20=1.84g/mL), and heat on a hot plate until completely dissolved. After cooling, transfer it to a 500mL volumetric flask, wash the beaker with 1+1 sulfuric acid, add 12.5mL of 5% (m/V) tartaric acid, and then dilute to the scale with 1+1 sulfuric acid, shake well and set aside. This solution contains 1.00mg antimony per milliliter.
(2) Antimony standard solution: Accurately pipette an appropriate amount of stock solution and dilute it step by step with 6mol/L hydrochloric acid to 10.0ug per ml. The solution can be stored for one month.
(3) 2-(5-bromo-2-pyridylazo)-5.diethylaminophenol (abbreviated as 5-Br-PADAP): 2×10-\mol/L ethanol solution [about 0.07% (m/V)].
(4) Potassium borohydride (tablets).
(5) Absorption solution: 0.03% potassium permanganate in 0.015mol/L sulfuric acid solution. (6) 25% (m/V) tartaric acid solution.
(7) 5% (m/V) thiourea solution.
(8) 20% (m/V) potassium iodide solution.
(9) 1+1 hydrochloric acid solution.
（10）0.5mol/L hydrochloric acid solution.
B4 Determination steps
（1）Calibration curve
Into eight generating bottles, add 0, 0.50, 1.00, 1.50, 2.00, 2.50, 3.00, 3.50mL of antimony standard solution, 4mL of 25% (m/V) tartaric acid, 4mL of 5% (m/V) thiourea, 12mL of 1+1 hydrochloric acid, dilute to 25mL with water, and shake well. Add 5mL of absorption liquid to the absorption tube. As shown in Figure B1, put two potassium borohydride tablets in the "potassium borohydride storage place", install the airway tube, plug the rubber stopper, gently tilt the generating bottle to one side, and let one of the "tablets" fall into the solution. After the reaction stops, drop another tablet into the solution to drive away the residual gas. After the reaction stops, wash the airway tube with a small amount of water, add 2.5mL of 0.5mol/L hydrochloric acid and 3 drops of 5% (m/V) sulfur to the absorption liquid, and shake well. After the purple color fades, add 0.5mL of 20% potassium iodide, 12mL of acetone, accurately add 2mL of 2×10-mol/L5-Br-PADAP ethanol solution, dilute with water to the mark, and shake well. Use a 10mm colorimetric dish to measure the absorbance at a wavelength of 600nm with the blank as the reference, and draw the absorbance Degree-concentration calibration curve. (2) Sample determination
Take 210mL of water sample (depending on the content) in the generating bottle, add 1~2 drops of phenol indicator solution, neutralize with 20% (m/V) sodium hydroxide solution until purple-red appears, add 8mL of 1+1 hydrochloric acid and 4mL of 5% (m/V) thiourea, dilute with water to 25mL, and shake well. The following is the volatile separation and color determination according to the calibration curve. B5 calculation
Calculate according to formula (B1):
Sb(mg/L)=m/V
Where: m—antimony content found by the calibration curve, ug: V——volume of the water sample, mL.
Precautions:
(1) The reduction device must be airtight, otherwise SbH3 is easily leaked, affecting the measurement results. .(B1)
（2）The diameter of the air duct outlet cannot be greater than 1mm, and the height of the absorption liquid cannot be less than 5cm, otherwise the absorption will be incomplete and the result will be low. (3) Before the separation by potassium borohydride reduction, thiourea is added. In addition to being a masking agent, it also has the function of pre-reducing antimony (V) to (II). This step is very important, otherwise the reduction of antimony (V) will not be complete and the result will be significantly low. (II) Atomic absorption spectrophotometry
B6 Overview
（1） Principle of the method
Antimony compounds are atomized in a slightly rich air/acetylene flame with good sensitivity. The state of antimony atoms in the flame can be used to quantify the absorption of the characteristic spectrum line 217.6nm emitted by its hollow cathode lamp. (2) Interference and elimination
General anions and cations in the test solution do not interfere with the determination of antimony. The presence of hydrochloric acid or nitric acid below 20% (V/V) in the test solution has no effect. Only sulfuric acid concentration greater than 2% (V/V) has an inhibitory effect on the absorption signal of antimony. When measuring antimony at a wavelength of 217.6nm, a large amount of copper and lead will have spectral interference, which will enhance the signal. To this end, a smaller spectral passband can be selected to overcome it. There is no interference when the copper concentration is less than 20m/L and the lead concentration is less than 1000mg/L.
(3) Scope of application of the method
The minimum detection concentration of this method is 0.2mg/L, and the upper limit of determination is 40mg/L. This method can be applied to the monitoring of industrial wastewater from non-ferrous metallurgy, chemical pharmaceuticals, and antimony-containing mining. B7 Instruments and working conditions
(1) Atomic absorption spectrophotometer.
(2) Working conditions (this is for reference, and can be selected according to the instrument manual).
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