摘要
建立了我国2005—2017年钢铁和焦化行业基于点源的排放清单,利用WRF-CMAQ模式定量模拟了钢铁和焦化行业排放对各省份人口加权污染物浓度的影响。排放清单核算结果表明,2017年我国钢铁和焦化行业排放PM2.5131万吨、SO2127万吨、NOx 66万吨、VOCs(Volatile Organic Compounds)98万吨。2005—2017年,钢铁、焦化行业的SO2和PM2.5排放量先增后降,NOx排放量持续增加,VOCs排放量先增加后略有下降。钢铁焦化行业对PM2.5的一次排放量和浓度的贡献分别为17%和5%,对SO2排放量和浓度的贡献分别为11%和5%,对NO2排放量和浓度的贡献分别为3%和1%,对大部分地区臭氧影响较小。PM2.5浓度受钢铁和焦化行业排放影响较大的区域为京津冀和长三角区域。考虑到其环境影响,今后应加强对钢铁和焦化行业的减排力度,特别是应加强对烧结机SO2和颗粒物排放以及钢铁厂无组织颗粒物排放的控制。
A unit-based emission inventory of steel and coking industry from 2005 to 2017 was established.The impact of steel and coking industry emissions on population-weighted air pollutant concentration were quantitatively simulated using WRF-CMAQ model.In 2017,the emissions of PM2.5,SO2,NOx and VOCs(Volatile Organic Compounds)from steel and coking industries are 1.31,1.27,0.66 and 0.98Mt,separately.SO2and PM2.5emissions of China’s steel and coking industries first increased and then decreased.NOx emissions kept decreasing while VOCs emissions first increased then slightly decreased.The contributions of the steel and coking industries to emissions and concentrations are 17%and 5%for PM2.5,11%and 5%for SO2,3%and 1%for NO2,respectively.Their influence on ozone concentration is negligible in most provinces.The areas with a greater impact on PM2.5are the Beijing-Tianjin-Hebei region and the Yangtze River Delta.Considering its environmental impact,SO2 and PM emission from sintering machines and fugitive PM emission from steel plants are top priority for emission control.
作者
郑昊天
赵斌
王书肖
ZHENG Haotian;ZHAO Bin;WANG Shuxiao(School of Environment,Tsinghua University,Beijing 100084.China;State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex,Beijing 100084,China;Pacific Northwest National Laboratory,Richland,WA 99354,USA)
出处
《环境影响评价》
2020年第4期16-21,43,共7页
Environmental Impact Assessment
