Numerical simulation of air pollutants diffusion discharged by power plants in Shanghai Expo Area

Based on the statistical analysis on the emission of main air pollutants, ADMS-Urban was used to simulate the concentration distribution of main pollutants in Shanghai Expo planning area. Typical days were chosen to study the distribution of the main pollutants in Expo planning area and influencing factors were analyzed. The results showed that Yangshupu power plant polluted Expo planning area most seriously, next to it is Wujing power plant and 2nd power plant. After that the denitration devices were adopted in 2nd Wujing power plant in 2008 and Wujing power plant in 2009, the concentration of main pollutants conformed to the air quality standards of Shanghai Expo planning area under SSW wind, and that of SO2 exceeded the air quality standards of Shanghai Expo planning area under NNE wind.