工业企业有组织VOCs排放特征及治理技术探讨——以济南为例

Discussion on emission characteristics and treatment technologies of organized VOCs in industrial enterprises:Taking Jinan as an example

采用便携式非甲烷总烃测试仪对济南市重点VOCs排放企业的有组织排放口开展监测,分析了不同行业、不同工艺非甲烷总烃(NMHC)排放特征,介绍了VOCs废气处理技术现状。结果表明:有组织废气NMHC排放浓度≤12800 mg/m^(3),超标率为11.9%;炼焦工艺排放的NMHC浓度最大,达到了868.25 mg/m^(3);重点VOCs排放企业废气治理采用活性炭吸附、UV光氧催化的比例较高,66.4%的企业采用组合治理模式,活性炭+UV光氧和吸附脱附+燃烧组合工艺的应用比例达到52.7%。

The VOCs at the organized emission outlets of key VOCs emission enterprises in Jinan was monitored by a portable nonmethane hydrocarbon analyzer.The emission characteristics of nonmethane hydrocarbons(NMHC)in different industries and processes were analyzed,and the current treatment technologies of VOCs were introduced.The results showed that the NMHC concentration of organized emission was≤12800 mg/m^(3),and the rate of exceeding the standard was 11.9%.The NMHC concentration discharged from coking process was the highest of all,reaching 868.25 mg/m^(3).The most used technologies in key VOCs enterprises were actived carbon adsorption and UV photocatalysis.66.4%of enterprises adopted a combined process to treat VOCs.The application proportion of combined process of activated carbon+UV photocatalysis and adsorption-desorption+combustion reached 52.7%.