厦门市工业源VOCs排放清单及控制对策分析

Analysis of Industrial VOCs Emission Inventory and Countermeasures in Xiamen

根据收集厦门市所辖6个区的工业源活动水平数据和厦门市环境统计数据等相关资料,运用排放因子法计算得到2019年厦门市6个辖区的8个行业的工业源VOCs排放清单,分析了厦门市各辖区VOCs排放强度的空间分布格局.在工业源VOCs排放清单的基础上结合企业调研,分析排放清单企业VOCs污染处理技术情况并提出相应的控制对策建议.结果表明,2019年厦门市工业源VOCs产生总量为16027.88 t,排放总量为5514.58 t,其中厦门岛外的海沧区、同安区、翔安区和集美区VOCs排放量分别为1648.35、2111.13、667.52和750.48 t,岛内的湖里区和思明区VOCs排放量较少,分别为292.42 t和44.68 t.除了湖里区,厦门市排放强度呈现岛外大于岛内的空间分布特点.厦门市8个行业中,VOCs排放主要来自于涂装、印刷、化工和橡胶行业,分别占厦门市总排放量的51.21%、20.18%、13.63%和10.67%.厦门市VOCs废气处理工艺情况分析结果表明,从源头控制层面,企业使用低(无)产生VOCs的原辅材料,可有效地从源头控制VOCs产生和排放;从末端处理工艺层面,UV光解/光催化、吸附处理、低温等离子体和生物法的实际处理效率均低于80%,吸附与催化燃烧等组合工艺以及燃烧法的实际处理效率均高于90%.

Based on data from industrial activities and environmental surveys in the six districts of Xiamen,the emission inventory of industrially sourced volatile organic compounds(VOCs)from eight industries in the six districts of Xiamen was calculated for 2019 by applying the emission factor analysis method.The spatial distribution pattern of VOC emission intensity in the six districts of Xiamen was analyzed.VOCs treatment technologies applied in the industries in the VOCs emission inventory were analyzed and countermeasures for improving VOC control were proposed based on the survey of the industries.The results showed that the total VOCs production and VOCs emission from industrial sources in Xiamen was 16027.88 t and 5514.58 t in 2019,respectively.Among them,the VOCs emission from Haicang,Tong’an,Xiang’an,and Jimei districts outside Xiamen Island were 1648.35,2111.13,667.52,and 750.48 t,respectively.Fewer VOC emissions from Xiamen Island were observed,which included 292.42 and 44.68 t from Huli and Siming districts,respectively.Except for the Huli District,the spatial distribution of emissions showed a spatial characteristic that the VOCs emission intensities outside Xiamen Island are higher than that of Xiamen Island.Among the eight industries in Xiamen,VOCs emissions were mainly from coating,printing,chemical,and rubber industries,which accounted for 51.21%,20.18%,13.63%,and 10.67%,respectively,of the total emissions.The analytic results of the VOCs waste gas disposal technique in Xiamen indicate that,from the perspective of source control,enterprises can effectively control the generation and emission of the VOCs at the source by using low(zero)raw materials.For the terminal disposal procedure,the actual disposal efficiency of UV photolysis/photocatalysis,low-temperature plasma,and biological methods are all lower than 80%,and that of the combined technique of adsorption and catalytic combustion,and the combustion method are both higher than 90%.