| With the rapid development of Anyang's economy and the acceleration of urbanization in recent years,its air quality has deteriorated seriously.The excessive air pollutants emission is considered to be mainly responsible for the serious air pollution,consequently emission reducing is the key to improving Anyang's air quality.The emission inventory of air pollution sources should be essential for both identifying the characteristics of air pollutants emission and controlling air pollution.In primary emission of atmospheric pollutants,the contribution of industrial sources is most prominent.Although there have been many domestic studies on the inventory of industrial emissions,but most of them focuses on Beijing-Tianjin-Hebei region,Yangtze River Delta and Pearl River Delta.There is still a lack of studies on the local emission characteristics of Anyang,which is seriously polluted.It is necessary to analyze the characteristics and reduction potential of typical industrial emission in Anyang.In this study,activity level data and control technology level of typical industrial sources in Anyang were collected through on-site investigation.Based on the literature survey,a reasonable estimating method and emission factors were used to establish air pollutants emission inventory of Anyang's typical industrial sources in 2016.The pollutant emission characteristics were analyzed,and the town-level emissions were al ocated with GIS,and the towns?streets?which had the most prominent contributions to different pollutant emissions were identified.According to national,provincial,and local policies and standards,three scenarios including the baseline scenario,the general control scenario and the stringent control scenario were set with considering technology upgrading and energy consumption control.Then the reduction potentials of SO2,NOx,PM10 and PM2.5 emissions of Anyang's typical industrial sources,in 2020,were estimated under the three scenarios.The results showed that,in 2016,the emissions of CO,NOx,SO2,VOCs,PM2.5,PM10,BC and OC of Anyang's typical industrial sources were 844.22×103,51.85×103,49.97×103,55.93×103,31.27×103,49.29×103,1.76×103 and 2.74×103 t,respectively.Overall,Iron and Steel industry was the main contributor to CO,SO2,PM2.5 and OC,Power and Heating industry was the main contributor to NOx,Petrochemical industry was the main contributor to BC,Building Materials industry was the main contributor to VOCs and PM10.In the view of spatial al ocation,emissions of industrial sources concentrated in Xiangtai Street in the middle of the municipal area,Shuiye Town and Tongye Town in the northwest and Yigou Town in the south of Tangyin County.Futhermore,the results of scenario analysis showed that,in 2020,NOx,SO2,PM2.5 and PM10 emisions of Anyang's typical industrial sources will be reduced by 6.99×103,4.44×103,0.29×103 and 0.59×103 t,respectively,under the baseline scenario;22.12×103,31.25×103,6.20×103 and 7.49×103 t,respectively,under the general control scenario;30.15×103,36.42×103,8.53×103 and 11.32×103 t,respectively,under the stringent control scenario.Obviously,the emission reduction potential of typical industrial sources in Anyang is huge,it is significant to follow national and provincial policies for improving Anyang's air quality. |
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