监利县大气污染源排放清单及特征研究

Emission Inventory and Characteristics of Atmospheric Pollution Sources in Jianli County

根据监利县大气污染源活动水平数据,文章建立了2017年1 km×1 km的大气污染源排放清单,得到监利县SO2、NOx、CO、VOCs、NH3、PM10、PM2.5、BC和OC的排放量依次为753.3、3975.5、15217.5、8952.2、6998.6、6807.7、3256.2、365.2和896.9 t。化石燃料固定燃烧源为SO2的最大排放源;移动源是主要的NOx贡献源;NH3主要来自农业源排放;PM10和PM2.5主要来自扬尘源和生物质燃烧源;CO、VOCs、BC和OC主要来自生物质燃烧源。空间分布结果显示,NH3排放集中于农业区且呈片状分布;NOx、CO和PM10的排放与移动源或道路扬尘排放关系较大,故呈明显带状路网分布。其余污染物的排放高值点则主要集中在监利县北部的容城镇和红城乡一带。

Based on the activity data,a 2017-based 1 km×1 km gridded atmospheric pollution sources emission inventory was developed for Jianli County.The results showed that the total emissions of SO2,NOx,CO,VOCs,NH3,PM10,PM2.5,BC and OC in Jianli were 753.3,3975.5,15217.5,8952.2,6998.6,6807.7,3256.2,365.2 and 896.9 t,respectively.Fossil fuels stationary combustion was the largest contributor to SO2 emission,while mobile was the major NOxcontributor.NH3 emission was mainly derived from agricultural source.Fugitive dust and biomass burning were the major contribution sources of PM10 and PM2.5.CO,VOCs,BC and OC were mainly from biomass burning.Spatial distributions of air pollutants illustrated that NH3 emissions were concentrated in agricultural areas and distributed in a sheet shape.The emissions of NOx,CO and PM10 are closely related to the mobile sources or road dust emission,which were obviously distributed in a strip-shaped road network.The emissions of other pollutants were concentrated in the area of Rongcheng Town and Hongcheng Township in northern Jianli County.