末端治理对工业涂装行业VOCs排放的影响

选取河北省4类典型工业涂装行业开展车间与末端排口VOCs样品采集,检测分析了102种VOCs组分,获得了4类行业车间与排口处VOCs排放特征.结果表明,不同行业由于涂料类型、使用量等因素影响,VOCs排放浓度存在较大差异;芳香烃与含氧挥发性有机物(OVOCs)是家具制造、车辆制造与专用设备制造行业的主要组分,占比分别为...

Influence of end-of-pipe treatment on VOCs emission in industrial coating industries

VOCs samples from workshops and outlets were collected from four types of typical industrial coating industries in Hebei Province, 102 VOCs species were detected and analyzed, and the VOCs emission characteristics of workshops and outlets in four industries were obtained. The results showed that VOCs emission concentrations vary greatly among different industries due to the influence of type of coating, usage amount and other factors. Aromatics and oxygenated VOCs were the main components in furniture manufacturing, vehicle manufacturing and special equipment manufacturing industries, accounting for 14.7%~88.3% and 10.1%~64.7%, respectively. The proportion of halo-hydrocarbons in metal products industry was 59.2%~86.9%. The end-of-pipe treatment had the greatest effect on aromatics, and the proportions of toluene, ethylbenzene, xylene, trimethylbenzene, butyl acetate and 2-butanone at the outlets were significantly lower than that in the workshops. The contributions of aromatics to ozone formation potential (OFP) and secondary organic aerosol formation potential (SOAP) were the highest, and the end-of-pipe treatment had a significant reduction effect on OFP, SOAP and source reactivity (SR). The differences in the SR of various sources were obvious, and it is suggested to strengthen the control of industries with high SR value.