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Problems on the use of low volatile solvent based coatings: the VOCs content of the solvent based coatings used in the project meets the "technical requirements for coatings with low volatile organic compound content" (GB / T) 38597-2020), I would like to know whether this solvent based coating belongs to the "solvent based coating with high VOCs content" prohibited in the "action plan of Guangdong Province to win the blue sky Defense War (2018-2020)" (yue fu (2018) No. 128). Can the project adopt the low volatile solvent type coating meeting the requirements?
Reply: Hello, if the project is located in Shenzhen City, and the relevant requirements of the technical specifications for low VOC content coatings of Shenzhen city are stricter than the national technical requirements for low VOC content coatings (GB / T 38597-2020), the technical specifications for low VOC content coatings of Shenzhen city will continue to be followed. In other cases, the "technical requirements for coating products with low VOC content" (GB / T 38597-2020) shall be followed.
Consultation on the unorganized emission control standard of volatile organic compounds: 1. Now there is an enterprise, the printing and gluing processes are in the approval, and the generated pollutants are VOCs. The emission is subject to the second period limit and unorganized emission limit of the emission standard of volatile organic compounds for printing industry (DB44 / 815) of Guangdong Province; the waste gas pollutants in the plant reach the limit of volatile organic compounds Table a.1 VOCs unorganized limit in the plant area in the control standard for unorganized emission of substances (gb37822-2019), but there is no VOC limit in the standard in the plant area in table a.1 of (gb37822-2019). What detection factors should be measured for unorganized emission in the plant area? With what judgment?
2. In which case are the emission limits and special emission limits in unorganized gb37822-2019 used?
Reply: Hello, according to the questions you asked, the reply is as follows:
Reply to question 1: the printing industry shall follow the principles of Guangdong Province's emission standard for volatile organic compounds (DB44 / 815) and unorganized emission control standard for volatile organic compounds (gb37822-2019), which is more strictly implemented. According to the control standard for fugitive emission of volatile organic compounds (gb37822-2019), the limit value of VOCs in the plant only specifies the limit value of non methane total hydrocarbon, so it is only necessary to monitor the value of non methane total hydrocarbon.
Reply to question 2: if the relevant national or provincial or municipal standards or regulations are clear, they shall be implemented in accordance with the relevant standards and regulations. If it is not clear, it can be selected according to the needs of local ambient air quality improvement, and the specific situation can be consulted with the local ecological environment department.
Source: Department of ecological environment of Guangdong Province
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