乌昌石区域化石燃料固定燃烧点源大气污染物排放清单及时空分布

Emission inventory of atmospheric pollutants from fossil fuel fixed combustion point source and its temporal and spatial distribution in Wuchangshi area

建立了2015年乌昌石区域化石燃料固定燃烧点源大气污染物(NOx、SO2、PM2.5和PM10)的排放清单,并对污染物的时空分布特征进行了分析。结果表明,2015年乌昌石区域化石燃料固定燃烧点源NOx、SO2、PM2.5和PM10的年排放量分别为2.10×105、1.52×105、4.28×104、8.35×104 t。从行业上来看,电力生产与供应行业对NOx、SO2、PM2.5和PM10的贡献率最大,分别为70.78%、66.56%、51.10%、49.98%;从化石燃料上来看,煤炭对NOx、SO2、PM2.5和PM10的贡献率最大,分别为95.63%、99.84%、99.70%、99.84%;从锅炉类型上来看,煤粉炉对NOx、SO2、PM2.5和PM10的贡献率最大,分别为84.20%、85.09%、83.43%、84.06%。固定燃烧点源污染物排放呈现出明显的时间变化特征,采暖季污染物排放量明显高于非采暖季,一天中白天的污染物排放量高于夜晚。空间分布显示,大气污染物的排放源主要集中在乌鲁木齐市、五家渠市和昌吉市。

The emission inventory of atmospheric pollutants(NO x,SO 2,PM 2.5 and PM 10)from fossil fuel fixed combustion point source in Wuchangshi area in 2015 was established.The temporal and spatial distribution characteristics of pollutants were analyzed.Results showed that the annual emissions of NO x,SO 2,PM 2.5 and PM 10 from fossil fuel fixed combustion point source in Wuchangshi area in 2015 were 2.10×105,1.52×105,4.28×104 and 8.35×104 t,respectively.In terms of industry,the electric power production and supply industry contributed the most to NO x,SO 2,PM 2.5 and PM 10 emissions,accounting for 70.78%,66.56%,51.10%and 49.98%,respectively.In terms of fuel,coal contributed the most to NO x,SO 2,PM 2.5 and PM 10 emissions,accounting for 95.63%,99.84%,99.70%and 99.84%,respectively.In terms of boiler type,pulverized coal furnace contributed the most to NO x,SO 2,PM 2.5 and PM 10 emissions,accounting for 84.20%,85.09%,83.43%and 84.06%,respectively.The emission of pollutants had significant temporal characteristics with higher in heating season than in non-heating season,and higher in daytime than in nighttime.Spatial distribution characteristics showed that the emission sources of atmospheric pollutants were mainly concentrated in Urumqi,Wujiaqu and Changji.