396 enterprises in Guangzhou carry out comprehensive VOCs remediation

In the paint shop of the automobile factory, the robot instead of the man is working intensively; around the factory, the monitoring car carefully looks for the hidden leakage point of the organic waste gas. This year is the end of the battle of pollution control. Volatile organic compounds (VOCs) is an important factor affecting the air quality of Guangzhou, and is one of the most difficult points in air governance. At the same time of helping enterprises to prevent and control the epidemic situation and resume production, Guangzhou carried out comprehensive regulation and law enforcement of VOC sales for 396 key regulatory enterprises, carried out patrol inspection and spot check one by one, and urged enterprises to rectify according to law. The online coating company.com, which completed the regulation before the end of June this year, was verified to be No. Before the high ozone pollution season in summer and autumn, we should reduce VOCs emissions and resolutely win the blue sky defense war.

VOCs has become an important factor affecting air quality. In accordance with the requirements of the work plan for comprehensive regulation of key volatile organic compounds regulatory enterprises in Guangdong Province and the notice of Guangzhou Municipal Bureau of ecological environment on implementing the work plan for comprehensive regulation of key volatile organic compounds regulatory enterprises in Guangdong Province, from February 11 to the end of June, Guangzhou has implemented the work plan for comprehensive regulation of key volatile organic compounds regulatory enterprises in Guangdong Province 396 enterprises in the provincial list of key VOC regulatory enterprises (the first batch of 2020 Edition) carried out comprehensive regulation and law enforcement of key VOC regulatory enterprises by number cancellation, carried out inspection and spot check one by one, urged the enterprises to rectify according to law, and verified the number cancellation if the rectification was completed. There are many industries involved in VOCs, among which there are 14 industries involved in 396 key regulatory enterprises in Guangzhou; the remediation methods are also different, and the one enterprise one plan is implemented. After all, VOCs waste gas treatment in surface coating industry can be divided into two ways: prevention and treatment. "Prevention" mainly refers to source control, i.e. by increasing the proportion of environmentally friendly coatings (water-based coatings or powder coatings) with low organic solvent content, improving the coating process technology (electrostatic spraying, brush coating, roll coating, etc.), developing intelligent coating test lines, fully closing the coating workshop, etc., to reduce VOCs generation. "Governance" is mainly to collect and purify VOCs waste gas produced in the process of coating production. Combined with the results of field investigation and data investigation of typical surface coating enterprises in the province, the effective measures for VOCs waste gas treatment in surface coating industry mainly include catalytic combustion (RCO) and high temperature incineration (RTO).

From the perspective of coating technology level, pollution control technology and survey data of surface coating enterprises in our province, the enterprises can fully achieve the standard emission by adjusting raw materials, improving spraying technology or spraying technology, supporting efficient pollution control facilities, etc. Supporting law enforcement According to the plan, from March to June, Guangzhou Municipal Bureau of ecological environment will organize two rounds of cross law enforcement actions in the whole city. The first round is from March 17 to April 2. The municipal and district professional elite forces and relevant experts will be selected to focus on volatile organic compounds according to the requirements of the Handbook of law enforcement for key volatile organic compounds industries in Guangdong Province (for Trial Implementation) Whether the enterprises use raw and auxiliary materials with low VOC content, whether the production process producing VOC waste gas is carried out in confined space or equipment, whether the unorganized exhaust gas is effectively collected, whether the end treatment facilities operate normally, and whether the production and operation account records are perfect, etc. carry out cross law enforcement inspection, aiming to help the key VOC supervision The second round is planned to be carried out from May to June, with random inspection and supervision on the number cancellation of enterprises' rectification. For the enterprises that meet the requirements of the law enforcement manual for assistance, the number will be cancelled after formal verification. For the enterprises that have not been corrected within the time limit or have not been rectified in place, serious investigation and punishment will be carried out according to law.