Analysis and suggestion on the drafting of emission standard of atmospheric volatile organic compounds for motor vehicle maintenance and repair industry in Zhejiang Province
With improvement of the volatile organic compounds(VOCs)emission standard system for key industrial sources in Zhejiang Province,this study taken the drafting of emission standard for motor vehicle maintenance and repair industry as the start point,which was a typical domestic source.The current situation of motor vehicle maintenance and repair industry in Zhejiang Province,including the number,type and distribution of enterprises,the implementation of emission standard and estimation of VOCs emissions,and the standards of other provinces(municipalities)were analyzed in detail.The results showed it was necessary and feasible to establish the emission standard of air pollutants for motor vehicle maintenance and repair industry in Zhejiang Province.Based on the local standards in Shanghai and Jiangsu Province,the following suggestions were put forward for the setting:(1)in the source prevention,the limitation of VOCs content in repair coating should be set,and the VOCs content limits should be strictly enforced by national standards;(2)in the process prevention and control,the requirements of enterprise area and boundary should be further clarified,in which the primary concentration value of non-methane hydrocarbons(NMHC)should be set for VOCs fugitive emission in enterprise areas,and the concentration of toxic and hazardous substances benzene and odor should be controlled at the enterprise boundary;(3)in the aspect of final treatment,the odor indexes could be added,and increased the minimum removal efficiency requirements of VOCs treatment facilities to enhance VOCs treatment requirements for the centralized sheet metal spraying center.
motor vehicle maintenance and repairvolatile organic compoundsemission standardspray and baking boothcentralized sheet metal spraying center