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This standard is developed for the following purposes: a) implementing such laws and regulations as Environmental Protection Law of the People's Republic of China and Law of the People's Republic of China on the Prevention and Control of Atmospheric Pollution; b) protecting the environment and preventing pollution; c) promoting the industrial production & operation and improvement on pollution treatment technology in Chongqing.
This standard specifies the concentration emission limits as well as supervisory and monitoring requirements of air pollutants except those specified in boiler, industrial furnace and other professional standards of Chongqing Municipality. Relevant national standards for pollutants emission are applicable to the water pollutants and environmental noises; relevant national solid waste pollution control standards are applicable to the identification, treatment and disposal of generated solid wastes.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
Main contents revised in this standard are as follows:
——the implementation region division of this standard is adjusted;
——the emission limits of some air pollutants in existing enterprises and new enterprises in urban area are adjusted.
After the implementation of this standard, the contents of process waste gas in DB 50/418-2012 Integrated emission standards of air pollutants in Chongqing shall be replaced by this standard and DB 50/418-2012 shall be abolished.
This standard specifies basic requirements of integrated emission control of air pollutants in Chongqing. When the requirements of environmental impact assessment documents or pollution emission permit are stricter than those in this standard, the approved environmental impact assessment documents or pollution emission permit shall prevail.
This standard was proposed by and is under the jurisdiction of Chongqing Environmental Protection Bureau.
This standard was approved by Chongqing Municipal People's Government on January 22, 2016.
This standard was implemented on February 1, 2016.
Integrated emission standards of air pollutants
1 Scope
This standard is applicable to the emission control for the existing pollution sources in Chongqing, the environmental impact assessment for newly-built, renovated and expanded project, the design of the environment protection facilities for construction project as well as their completion acceptance and emission control after being put into service.
In accordance with the principle that the integrated emission standard and professional emission standard are not executed at the same time, the pollution sources different from boilers, industrial furnaces, and those beyond the applicable scope of national or local professional standards shall be in accordance with the requirements of this standard. As for the national standards or local professional standards issued after the implementation of this standard, the pollution source specified according to their application scope shall be in accordance with the corresponding air pollutants emission standard but not this standard.
This standard is applicable to pollutant emission allowed by law. The site selection of the newly-set pollution source and the management of the current pollution source in special protection area shall be in accordance with the relevant provisions in such laws, regulations and rules as Law of the People's Republic of China on the Prevention and Control of Atmospheric Pollution, Law of the People's Republic of China on the Prevention and Control of Environmental Pollution by Solid Waste and Law of the People's Republic of China on Environmental Impact Assessment.
2 Normative references
The following referenced documents are indispensable for the application of this standard. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 3095 Ambient air quality standard
GB 4920 Determination of sulphuric acid mist in tail gas in sulphuric acid concentration process - Barium chromate colorimetric method
GB/T 15264 Ambient air - Determination of lead - Flame atomic absorption spectrometric method
GB/T 15432 Ambient air - Determination of total suspended particulates - Gravimetric method
GB/T 15439 Air quality - Determination of Benz[a]pyrene in ambient air - High performance liquid chromatography
GB/T 15501 Air quality - Determination of nitrobenzene (mononitro- and dinitro-compound) - Reduction by zinc-N-(1-Naphthyl) ethylene diamine dihydrochloride spectrophotometric method
GB/T 15502 Air quality - Determination of aniline - N-(1-Naphthyl)ethylene diamine dihydrochloride spectrophotometric method
GB/T 15516 Air quality - Determination of formaldehyde - Acetylacetone spectrophotometric method
GB/T 16157 Determination of particulates and sampling methods of gaseous pollutants emitted from exhaust gas of stationary source
GB/T 16297 Integrated emission standards of air pollutants
HJ 738 Ambient air - Determination of nitroaromatics - Gas chromatographic method
HJ 739 Ambient air - Determination of nitrobenzene compounds - Gas chromatography-mass spectrometry method
Supervisory technical specification on completion acceptance of environment protection facilities for construction project of Chongqing - Polluting project
3 Terms and definitions
For the purposes of this standard, the following terms and definitions apply.
3.1 standard condition
condition of flue gas at a temperature of 273K and under a pressure of 10 1325Pa, which is referred to as “standard condition”. Standard values specified in this standard are benchmarked against the dry air under standard condition
3.2 maximum approval emission concentration
limit which shall not be exceeded by the average pollutant concentration in any one hour in the exhaust stack after treatment of facilities, or the limit which shall not be exceeded by the average pollutant concentration in any one hour in the exhaust stack without treatment facilities
3.3 maximum approval emission rate
limit of maximum mass of pollutants emitted in any one hour by an exhaust stack at a certain height
3.4 fugitive emission
fugitive emission of air pollutants without passing through exhaust stacks
The emission by low-short exhaust stack is organized but may also lead to the consequence same as fugitive emission under certain conditions. Therefore, when implementing the indexes of "concentration limit of fugitive emission monitoring point", the increment of pollutant concentration at monitoring site resulted from low-short exhaust stack shall not be subtracted.
3.5 fugitive emission monitoring site
monitoring point set up for identifying if the fugitive emission exceeds the limit
3.6 concentration limit of fugitive emission monitoring point
limit which shall not be exceeded by the average pollutant concentration at the monitoring site in any one hour under standard condition
3.7 urban area
urban area corresponding to the urban functional core area and the urban functional expansion area, including: Yuzhong District, Dadukou District, Jiangbei District, Nan'an District, Shapingba District, Jiulongpo District, Beibei District, Yubei District and Ba’nan District.
3.8 affecting area
area in the urban area of Chongqing, which is affected directly or significantly by atmospheric diffusion and includes Jiangjin District, Bishan District and Hechuan District
3.9 other area
administration area (including various development areas within the range of the administration area) except for urban area and affecting area within the administrative division of Chongqing
3.10 key area
area where air pollutant emission needs to be controlled strictly according to the requirements of environmental protection, as the land development density is relatively high, the environmental bearing capacity starts to reduce or the atmospheric environment capacity is relatively small, the ecological environment is vulnerable, and the atmospheric environment pollution problem is likely to occur
3.11 surrounding building
building (with human activities) that has existed before the construction of the enterprise exhaust stack. The topographic height difference shall be taken into consideration for the height of the building; when the height difference between the horizontal plane of the exhaust stack (and its main building) and the horizontal plane of the building within the evaluation range is greater than the sum of the exhaust stack height and its maximum plume rise, this building may not be regarded as a surrounding building
4 Pollutants emission control requirements
4.1 From the implementation date of this standard, the organized emission of pollution source that is new or has passed the review on environmental impact assessment shall meet the requirements of Table 1.
4.2 The fugitive emission from pollution sources shall be under strict control and generally there shall be no fugitive emission. The inevitable fugitive emission shall comply with the limits specified in Table 1.
4.3 For affecting areas and key areas in other areas, urban area standard may be referenced.
Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Pollutants emission control requirements 5 Exhaust stack height requirement 6 Pollutant monitoring requirements 7 Implementation and supervision
