Development Of An Air PPllutant Emission Inventory For Beijing And Preliminary Study Of Haze Weather

In recent years, the Beijing has becoming one of the most polluted areas by the pollution haze. As a consequence, one of our major work is to analyze the pollution emission of the haze. Based on the collected data and the list of atmospheric pollution emissions all over the world, this report has made a pollution emission list by combining the energy consumption of different industries in2013in Beijing.This report also carries on a initial research on the pollution haze weather by using the AERMOD diffusion simulation model to make analyze of the pollution emission of the motor vehicles, power plant and the actual monitoring result of the Beijing city in2014.The listing results of the Beijing atmospheric pollutant emission in2013has shown that:NOx、SO2、VOCs、CO、PM10and PM2.5are207,182.7tons,109,821.1tons,235,131.87tons,483,710.1tons,33,585.7tons and20,379.0tons.The motor vehicle has become the main source of pollution emission namely the NOx、VOCs、CO、PM10、 PM2.5, the contribution rate were42.98%,99.05%,82.73%,99.05%and82.73%. Coal-fired power plant is the main source for the emissions of SO2, accounts for50.16%of total emissions.Through analyzing the pollutant monitoring results of the monitoring statistics, this report has analyzed the incidence of the haze weather in Beijing, this report also studied the time change trend of each pollutant and correlations in haze weather.Report also discussed the effect of the meteorological factors on the concentration of PM2.5. The results show that the rate of the haze weather is probably high in the season of winter and spring.The pollutant concentration has also been affected by the seasonal variation. Apart from the O3, the pollution concentration of all the monitoring pollutant is always higher in the winter. And what is more, the report has also found that the concentration of PM2.5has a positive correlation of the relative humidity and a negative correlation of the wind speed.Based on the emission list of Beijing, the report also simulates the motor vehicles, coal-fired power plant emissions within the scope of diffusion in downtown Beijing. Results show that under the same weather conditions, the spread of the motor vehicle NOx, PM2.5concentrations is significantly higher than that of coal-fired power plants. What is more coal-fired power plants and the diffusion of the pollutants from the motor vehicle emissions concentration also varies from the meteorological conditions, which also consistent with the actual monitoring trend of concentration change. This report also finds out that the emission of NOx and SO2from the power plant and the motor vehicle through secondary formation of PM2.5, the spread of the primary and secondary PM2.5concentrations of the monitoring value is25%and40%of the measurement data.