京津冀地区火电企业的大气污染影响

以在线监测、环评、验收等火电企业排放数据为基础,自下而上编制京津冀火电企业排放清单,利用气象模式WRF生成中尺度气象数据,采用CALPUFF空气质量模式模拟了不同情境下京津冀地区火电企业排放SO2、NOx、一次PM10,以及二次生成硫酸盐、硝酸盐等污染情况.结果显示,2011年京津冀地区火电行业排放污染物对京津冀西南部地区影响较大,各污染物年均最大浓度均出现在石家庄市;采取减排措施后,京津冀地区火电排放量SO2、NOx、烟粉尘总量与2011年火电排放现状相比 ,分别下降了33%、71%、68%;减排后火电行业对各城市SO2、NOx、一次PM10,以及二次生成硫酸盐、硝酸盐年均贡献浓度均大幅度减少,年均贡献最大值分别降低46.34%、78.43%、76.34%、39.49%、73.87%.

Air pollution effect of the thermal power plants in Beijing-Tianjin-Hebei region

Since there haven’t been any research on the explicit analysis of the air pollution of thermal power plants in Beijing-Tianjin-Hebei region, we conducted this research to complement the great need, which was based on the power plants’ emission datum consisted of CEMS, EIA, as well as follow-up inspection. With these datum we built the bottom-up emission inventory of all thermal power plants in Beijing-Tianjin-Hebei region. Making use of the WRF output data, we simulated the meso-scale meteorological field by CALMET. Then we simulated the air pollution effect of SO2, NOx, primary PM10,sulfates,nitrates under different scenarios. The simulation result showed that: In 2011, the most affected subarea of the air pollution of thermal power plants was the Southwest part of the region, the highest annual average pollutants emission records was held by Shijiazhuang. After the emission reduction action has been taken, the total amount of SO2, NOx, PM10 emitted from the thermal power plants has respectively reduced 33%,71%,68% of those in 2011. Another gratifying result was that the annual average concentration of SO2, NOx, primary PM10, sulfate, nitrate caused by the power plants has reduced to respectively 46.34%,78.43%,76.34%,39.49%,73.87%,significantly lower than those before the emission reduction action has been taken.