Abstract
Abstract The pollutant discharged by power plant has less impact on the ground concentration, but it cannot be ignored because of its huge emissions. It is an important reason for the regional acid rain. AERMOD model was applied to simulate the pollutant concentration at different heights in beilun district. The results showed that the ground daily average concentration of SO2 was equivalent to 26.7%∼53.3% of ambient air quality standard, and the concentration of NO2 was equivalent to 16.7%∼58.3%. But the concentration of SO2 and NO2 was relatively higher in the upper air of beilun district. The area that daily average concentration of SO2 exceeded 200 μg/m3 is about 200km2, and the area that daily average concentration of NO2 exceeded 200 μg/m3 is about 150km2. As the SO2 and NO2 were acid-causing substances, there were a lot of acid substance on high-altitude, it must be an important reason for the high frequency of acid rain on beilun district.
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