江苏省典型工业源挥发性有机物排污特征与减排潜力分析

Emission characteristics and emission reduction potential of volatile organic compounds from typical industrial sources in Jiangsu Province

VOCs是臭氧和二次有机气溶胶等复合型污染的前驱体。基于原辅料和生产工艺的角度,构建江苏省内人造板、印刷、电子、橡胶和塑料、制药、化工、喷涂为代表的典型工业行业VOCs成分谱。通过最大增量反应活性系数(MIR)、气溶胶生成系数(FAC),依据原辅料、产品和工艺的区别,分析各行业、企业VOCs组分区别与臭氧生成潜势和二次颗粒物生成潜势。结果表明:橡胶和塑料行业单位OFP最高,约为4.09 g·g^(-1);SOA较高的印刷、制药、涂装、橡胶和塑料行业,其值约为1.5 g·g^(-1);通过MIR和FAC系数模型可知,橡胶和塑料行业是O_(3)污染管控重点,印刷、制药、涂装、橡胶和塑料行业是二次气溶胶的管控重点。基于江苏省典型工业行业VOCs特征,分析我国现行VOCs治理技术指南推荐工艺与现存低效治理工艺的差异,以估算全国典型工业行业VOCs年产污量和污染特性减排潜力,可为VOCs管理相关法规政策制定提供依据。

VOCs is the precursor of ozone and secondary organic aerosol combined pollution.In this study,from the perspective of raw materials and production process,the composition spectrum of VOCs in Jiangsu Province was constructed for the typical industries such as wood-based panel,printing,electronics,rubber and plastics,pharmaceutical,chemical and spraying.Through MIR(maximum incremental reactivity coefficient)and FAC(fractional generation coefficient),the differences of VOCs components in various industries and enterprises,ozone generation potential and secondary particulate matter generation potential were analyzed according to the differences of raw materials,products and processes.The unit OFP of rubber and plastics industry is the highest,which is about 4.09 g·g^(-1).Printing,pharmaceutical,painting,rubber and plastics industries with high SOA value have SOA value of about 1.5 g·g^(-1).According to MIR and FAC,rubber and plastic industry is the focus of O_(3) pollution control,and printing,pharmaceutical,painting,rubber and plastic industry is the focus of secondary aerosol control.Based on the characteristics of VOCs of typical industry in Jiangsu Province,the differences between the current domestic VOCs treatment technology guidelines recommended processes and existing inefficient treatment processes were analyzed,and the annual pollution volume and emission reduction potential of pollution characteristics of VOCs of typical industry in China were estimated,as the key basis for the formulation of relevant regulations and policies of VOCs management.