Detail of DB12/ 356-2018

Introduction of DB12/ 356-2018

Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. The complete text of this standard is compulsory. In order to strengthen the prevention and control of water pollution in Tianjin, protect and improve the water environment, safeguard human health and promote the sustainable development of environment, economy and society, DB12/356-2008 Integrated wastewater discharge standard was revised according to the Law of the People's Republic of China on Prevention and Control of Water Pollution and the Regulations of Tianjin on Prevention and Control of Water Pollution. The following main changes have been made after the revision of this standard: ——the application scope of standard has been adjusted; ——70 pollutant control indicators have been added, so that the control items were increased from 5 in the original standard to 75; ——the discharge limits for some pollutants have been tightened; ——provisions on negotiated discharge have been added. This standard is the basic requirement of water pollutant discharge control. If the requirements of environmental impact assessment document or pollutant discharge permit are stricter than this standard, the approved environmental impact assessment document or pollutant discharge permit shall be followed. This standard is developed in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by and is under the jurisdiction of Tianjin Municipal Environmental Protection Bureau. This standard was approved by Tianjin People's Government in January 2018. This standard was firstly issued in January, 2008 and is revised for the first time. Integrated wastewater discharge standard 1 Application scope This standard specifies the terms and definitions of wastewater discharge, corresponding standard grading, requirements for pollutant discharge control, requirements for pollutant monitoring, implementation and supervision, etc. This standard is applicable to the discharge management of water pollutants from existing pollutant discharge units in Tianjin, as well as the environmental impact assessment of construction projects, the design of environmental protection facilities of construction projects, the completion acceptance and the discharge management after putting into service. This standard is applicable to pollutant discharge behaviors allowed by law. The site selection of the pollution source set newly and the management of the current pollution source in the special protected zone shall be executed in accordance with the relevant provisions of laws, regulations and rules such as Law of the People's Republic of China on Prevention and Control of Water Pollution, Marine Environment Protection Law of the People's Republic of China and Law of the People's Republic of China on Environmental Impact Assessment. Since the comprehensive discharge standard and the professional discharge standard are not implemented alternately, where there is a national or provincial professional water pollutant discharge standard, the corresponding professional water pollutant discharge standard shall be implemented according to its application scope, while the water pollutant discharge from other pollutant discharge units shall comply with this standard. The discharge control requirements of water pollutants specified in this standard are applicable to the behaviors of the discharge units discharging water pollutants, directly or indirectly, out of their legal boundaries. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB 6920 Water quality—Determination of pH value—Glass electrode method GB 7466 Water quality—Determination of total chromium GB 7467 Water quality—Determination of chromium(6)—1.5 Diphenylcarbohydrazide spectrophotometric method GB 7475 Water quality—Determination of copper, zinc, lead and cadmium—Atomic absorption spectrometry GB 7484 Water quality—Determination of fluoride—Ion selective electrode method GB 7485 Water quality—Determination of total arsenic—Silver diethyldithiocarbamate spectrophotometric method GB 7494 Water quality—Determination of anionic surfactants—Methylene blue spectrophotometric method GB 8978 Integrated wastewater discharge standard GB 11889 Water quality—Determination of aniline compounds—Spectrophotometric method with N-(1-naphthyl) ethylenediamine GB 11890 Water quality—Determination of benzene and its analogies—Gas chromatographic method GB 11893 Water quality—Determination of total phosphorus—Ammonium molybdate spectrophotometric method GB 11901 Water quality—Determination of suspended substance—Gravimetric method GB 11902 Water quality—Determinaton of selenium—Diaminonaphthalene fluorometric method GB 11903 Water quality—Determination of colority GB 11907 Water quality—Determination of silver—Flame atomic absorption spectrophotometric method GB 11911 Water quality—Determination of iron and manganese—Flame atomic absorption spectrometric method GB 11912 Water quality—Determination of nickel—Flame atomic absorption spectrometric method GB 13192 Water quality—Determination of organic phosphorous pesticide in water—Gas chromatography GB/T 14204 Water Quality—Determination of alkylmercury—Gas chromatography GB/T 15441 Water Quality—Determination of the acute toxicity—Luminescent bacteria test GB/T 15959 Water Quality—Determination of Adsorbable Organic Halogens (AOX)—Microcoulometric Method GB/T 16489 Water quality—Determination of sulfide—Methylene blue spectrophotometric method GB 18871 Basic standards for protection against ionizing radiation and for the safety of radiation sources EJ/T 900 Determination of total β radioactivity in water Evaporation method EJ/T 1075 Water quality—Determination of gross alpha activity—Thick source method HJ/T 59 Water Quality—Determination of Beryllium—Graphite Furnace Atomic Absorption Spectrophotometry HJ/T 60 Water Quality—Determination of Sulfides—Iodometric Method HJ/T 70 High-chlorine wastewater—Determination of chemical oxygen demand—Chlorine emendation method HJ/T 72 Water quality—Determination of phthalate (dimethyl, dibutyl, dioctyl)—Liquid chromatography HJ/T 73 Water Quality—Determination of Acrylonitrile—Gas Chromatography HJ/T 74 Water Quality—Determination of Chlorobenzene—Gas Chromatography HJ/T 83 Water quality—Determination of adsorbable organic halogen—Ion chromatography method HJ 84 Water quality—Determination of inorganic anions—Ion chromatography method HJ/T 341 Water quality—Determination of mercury—Cold atomic fluorescent spectrophotometry (Trial) HJ/T 345 Water quality—Determination of iron—Phenanthrol ine spectrophotometry (Trial) HJ/T 347 Water quality—Determination of fecal coliform—Manifold zymotechnics and filter membrane (Trial) HJ/T 399 Water quality—Determination of the chemical oxygen demand—Fast digestion-spectrophotometric method HJ 478 Water quality—Determination of polycyclic aromatic hydrocarbons by liquid-liquid extraction and solid-phase extraction—High performance liquid chromatography HJ 484 Water quality—Determination of cyanide—Volumetric and spectrophotometry method HJ 488 Water quality—Determination of fluoride—Fluorine reagents spectrophotometry HJ 501 Water quality—Determination of total organic carbon—Combustion oxidation nondispersive infrared absorption method HJ 503 Water quality—Determination of volatile phenolic compounds—4-AAP Spectrophotometric method HJ 505 Water quality—Determination of biochemical oxygen demand after 5 days (BOD5) for dilution and seeding method HJ 535 Water quality—Determination of ammonia nitrogen—Nessler’s reagent spectrophotometry HJ 536 Water quality—Determination of ammonia nitrogen—Salicylic acid spectrophotometry HJ 537 Water quality—Determination of ammonia nitrogen—Distillation -neutralization titration HJ 585 Water quality—Determination of free chlorine and total chlorine—Titrimetric method using N,N-diethyl-1,4-phenylenediamine HJ 586 Water quality—Determination of free chlorine and total chlorine—Spectrophotometric method using N,N-diethyl-1,4-phenylenediamine HJ 591 Water quality—Determination of pentachlorophenol by gas ghromatography HJ 592 Water quality—Determination of nitrobenzene-compounds by Gas chromatography HJ 593 Water quality—Determination of phosphorus—Phosphomolybdenum blue spectrophotometric method HJ 594 Water quality—Determination of the total amount of the developing agent and their oxides—lodine-starch spectrophotometry HJ 595 Water quality—Determination of the total amount of color developing agent—169 Coupler spectrophotometry HJ 597 Water quality—Determination of total mercury—Cold atomic absorption spectrophotometry HJ 601 Water quality—Determination of formaldehyde—Acetylacetone spectrophotometric method HJ 620 Water quality—Determination of volatile halogenated organic compounds—Headspace gas chromatography HJ 621 Water quality—Determination of chlorobenzenes—Gas chromatography HJ 636 Water quality—Determination of total nitrogen—Alkaline potassium persulfate digestion UV spectrophotometric method HJ 637 Water quality—Determination of petroleum, animal fats and vegetable oils—Infrared spectrophotometry HJ 639 Water quality—Determination of volatile organic compounds—Purge and trap/gas chromatography-mass spectrometer HJ 648 Water quality—Determination of nitroaromatics by gas chromatography HJ 659 Water quality—Determination of cyanide and others by vacuum testing tube-electric colorimeter HJ 665 Water quality—Determination of ammonium nitrogen by continuous flow analysis (CFA) and Salicylic acid spectrophotometry HJ 666 Water quality—Determination of ammonium nitrogen by flow injection analysis (FIA) and Salicylic acid spectrophotometry HJ 667 Water quality—Determination of total nitrogen by continuous flow analysis(CFA) and N-(1-naphthyl) ethylene diamine dihydrochloride spectrophotometry HJ 668 Water quality—Determination of total nitrogen by flow injection analysis (FIA) and N-(1-naphthyl) ethylene diamine dihydrochloride spectrophotometry HJ 670 Water quality—Determination of orthophosphate and total phosphorus—Continuous flow analysis (CFA) and Ammonium molybdate spectrophotometry HJ 671 Water quality—Determination of total phosphorus—Flow injection Analysis (FIA) and Ammonium molybdate spectrophotometry HJ 676 Water quality—Determination of phenolic compounds—Liquid-liquid extraction/gas chromatography HJ 686 Water quality—Determination of volatile organic compounds—Purge and trap/gas chromatography HJ 694 Water quality—Determination of mercury, arsenic, selenium, bismuth and antimony—Atomic fluorescence spectrometry HJ 699 Water quality—Determination of organochlorine pesticides and chlorobenzenes—Gas chromatography mass spectrometry HJ 700 Water quality—Determination of 65 elements—Inductively coupled plasma-mass spectrometry HJ 716 Water quality—Determination of nitroaromatics—Gas chromatography mass spectrometry HJ 744 Water quality—Determination of phenols compounds—Gas chromatography mass spectrometry HJ 755 Water quality—Determination of total coliforms and fecal coliforms—Paper strip method HJ 757 Water quality—Determination of chromium—Flame atomic absorption spectrometry HJ 776 Water quality—Determination of 32 elements—Inductively coupled plasma optical emission spectrometry HJ 806 Water quality—Determination of acrylonitrile and acrolein—Purge and trap/gas chromatography HJ 810 Water quality—Determination of volatile organic compounds—Headspace/Gas chromatography mass spectrometry HJ 811 Water quality—Determination of total selenium—3,3'-Diaminobenzidine spectrophotometric method HJ 822 Water quality—Determination of aniline compounds—Gas chromatography mass spectrometry HJ 823 Water quality—Determination of cyanide—Flow injection analysis (FIA) and spectrophotometric method HJ 824 Water quality—Determination of sulfide—Flow injection analysis (FIA) and methylene blue spectrophotometric method HJ 825 Water quality—Determination of volatile phenols—Flow injection analysis (FIA) and 4-AAP spectrophotometric method HJ 826 Water quality—Determination of anionic surfactants—Flow injection analysis (FIA) and methylene blue spectrophotometric method HJ 828 Water quality—Determination of the chemical oxygen demand—Dichromate method 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 new (rebuilding, extending) construction units new (rebuilding, extending) construction units whose environmental impact assessment documents have been approved from the date of implementation of this standard 3.2 existing units existing units that have been constructed and put into operation or whose environmental impact assessment documents have been approved before the date of implementation of this standard 3.3 wastewater general term for water discharged during production and living activities 3.4 drainage amount volume of wastewater discharged from production facilities or enterprises to outside the legal boundaries of enterprises, including various wastewater (including domestic sewage and cooling wastewater in plant area and the water discharged from boilers and power plants in plant area) discharged out, which are directly or indirectly related to production 3.5 direct discharge behavior that the discharge units directly discharge water pollutants to the environmental water 3.6 indirect discharge behavior that the discharge units discharge water pollutants to public wastewater treatment plant 3.7 public wastewater treatment plant enterprise or organization collecting wastewater through sewage pipes (canals), providing wastewater treatment service for more than two discharge units, and whose drainage is able to meet the requirements of relevant discharge standards; it includes municipal wastewater treatment plants and areas (including all kinds of industrial parks, development areas, industrial clusters, etc.) of various scales and types with the wastewater treatment degree reaching Level II or above 3.8 industrial park all kinds of industrial parks, development areas, bonded areas, export processing zones, eco-industrial parks and industrial clusters with clear geographical boundaries approved by the state or Tianjin 4 Standard grading 4.1 This standard is classified by different discharge destinations and functions of wastewater into three levels, of which the first and second levels are direct discharge standards, and the third level is indirect discharge standards. 4.2 Wastewater discharged into water bodies above Class IV (inclusive) in GB 3838 and water bodies within its catchment scope, as well as wastewater discharged into Class II and Class III sea areas in GB 3097, shall be subject to Level I standard. 4.3 Wastewater discharged into Class V water body in GB 3838 or water bodies in sewage control areas and their catchment areas, as well as wastewater discharged into Class IV sea areas in GB 3097 shall be subject to Level II standard. 4.4 Wastewater discharged into public wastewater treatment plant shall be subject to Level III standard. 5 Requirements for pollutant discharge control 5.1 The new (rebuilding, extending) construction units shall implement the discharge limits of this standard from February 1, 2018; existing units shall implement the discharge limits of this standard from January 1, 2019. The discharge limits of the original standard DB12/356-2008 are implemented before December 31, 2018. 5.2 Standard limits In this standard, the discharged pollutants are classified, by their properties and control methods, into two categories. 5.2.1 Class I pollutants Regardless of industry and wastewater discharge mode, samples shall be taken at the drainage outlet of workshop or workshop treatment facilities, and the maximum acceptable discharge concentration shall meet the requirements of Table 1 (the outlet of tailings dam in mining industry shall not be regarded as the drainage outlet of workshop). For the discharge of wastewater containing radioactive materials, in addition to this standard, it shall also comply with the requirements of GB 18871.

Contents of DB12/ 356-2018

Foreword i 1 Application scope 2 Normative references 3 Terms and definitions 4 Standard grading 5 Requirements for pollutant discharge control 6 Requirements for pollutant monitoring 7 Implementation and supervision