| 京津冀地区主要排放源减排对PM2.5污染改善贡献评估 |
| 摘要点击 5515 全文点击 1840 投稿时间：2016-07-27 修订日期：2016-09-28 |
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| 中文关键词 PM2.5 京津冀地区 CMAQ/2D-VBS 控制对策 减排 |
| 英文关键词 PM2.5 the Beijing-Tianjin-Hebei region CMAQ/2D-VBS control strategy emissions reduction |
| 作者 | 单位 | E-mail | | 吴文景 | 清华大学环境学院, 环境模拟与污染控制国家重点联合实验室, 北京 100084 | wuwj91@126.com | | 常兴 | 清华大学环境学院, 环境模拟与污染控制国家重点联合实验室, 北京 100084 | | | 邢佳 | 清华大学环境学院, 环境模拟与污染控制国家重点联合实验室, 北京 100084 | | | 王书肖 | 清华大学环境学院, 环境模拟与污染控制国家重点联合实验室, 北京 100084
国家环境保护大气复合污染来源与控制重点实验室, 北京 100084 | shxwang@tsinghua.edu.cn | | 郝吉明 | 清华大学环境学院, 环境模拟与污染控制国家重点联合实验室, 北京 100084
国家环境保护大气复合污染来源与控制重点实验室, 北京 100084 | |
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| 中文摘要 |
| 研究选取2012年1月和7月作为冬夏两季代表时段，利用CMAQ/2D-VBS模型分析了冬夏两季京津冀地区主要排放源减排30%对改善区域PM2.5污染的效果.结果表明，工业源对PM2.5污染的贡献最大，其次是民用源，但工业源单位减排量贡献低于民用源，交通源和电厂源的整体贡献和单位减排量贡献均较小.工业部门内贡献最大的为钢铁冶金行业，其次是水泥、工业锅炉、炼焦、石灰砖瓦和化工行业.与各部门各物种排放量的比较反映出各排放源贡献大小与其一次PM2.5排放水平高度相关.因京津冀地区冬季NOx减排对PM2.5形成的促进作用，以及冬季较弱的大气垂直扩散作用，各排放源夏季减排比冬季普遍更有效，交通源、电厂源以及工业源中的水泥、工业锅炉和石灰砖瓦行业夏季减排效果相比冬季优势明显.民用源由于采暖季排放较高而冬季贡献更明显，农业源因秸秆开放燃烧量大，冬季单位减排量贡献十分显著.从同等幅度减排考虑，应将工业源作为控制重点，优先控制其一次PM2.5排放，在部门内进一步重点控制钢铁冶金行业的NOx和SO2排放、水泥行业的夏季NOx排放以及炼焦行业的SO2和NMVOC排放.民用源排放应着重在冬季采暖期控制. |
| 英文摘要 |
| This study chose two months (January and July) in 2012 which represent winter and summer respectively, to assess the effects of fine particle(PM2.5) pollution elimination due to emission control from different sectors in the Bejing-Tianjin-Hebei region by using CMAQ/2D-VBS modeling system. The results showed that, industrial emissions contributed most to PM2.5 pollution in the Beijing-Tianjin-Hebei region, followed by domestic emissions, while the contribution of per ton emission reduced for industrial sectors subject to domestic sectors. The total contribution and contribution of per ton emission reduced for transportation and power plant were both at low level. Among industrial sectors, the iron, steel and metallurgical industry was the greatest contributor, followed by cement industry, industrial boiler, coking industry, lime and bricks industry and chemical industry. It was found that the contribution of each emission source had significant association with its primary PM2.5 emission level. The control of NOx emissions would promote the formation of PM2.5, and atmospheric vertical diffusion effect was weak during wintertime in the Beijing-Tianjin-Hebei region. As a result, emission control of various sectors was universally more effective for PM2.5 pollution mitigation in summer than in winter. Emission control in summer was significantly more effective for transportation, powerplant, cement industry, industrial boiler and lime and bricks industry. Due to considerable emissions in heating season, domestic emissions showed more contribution in winter. Agricultural sources showed greater contribution per emission reduction in winter by the reason of substantial emissions from straw open burning during this time. With respect to a certain reduction ratio of emission, future control strategies should pay more attention to industrial emissions, especially to the primary PM2.5 emissions. In details, priorities should be given to NOx and SO2 emission control for iron, steel and metallurgical industry, NOx emission control for cement industry and SO2 and NMVOC emission control for coking industry. Besides, domestic emission control should also be taken into consideration, and it will be more effective in winter. |
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