中国有色金属冶炼行业大气汞排放趋势预测

Projections of atmospheric mercury emission trends in China's nonferrous metalsing industry

采用情景分析的方法,建立了不同情景下中国有色金属冶炼行业的汞排放趋势,并分析了主要控制措施对该行业大气汞减排的贡献.研究发现,中国有色金属冶炼行业2030年的最大减排潜力将达到122.3t,比2012年降低82.9%.其中,锌、铅和铜冶炼的大气汞排放量将分别减少77.8t、42.7t和1.8t.为减少大气汞排放,锌冶炼将主要通过完善大气污染控制措施实现.其中2020年和2030年采用该措施将分别减少51.0t和23.9t的大气汞排放量.铜冶炼主要通过增加再生铜比例实现大气汞减排.2020年和2030年,该措施大气汞减排量分别占铜冶炼总减排量的61.1%和72.5%.2020年前,铅冶炼的大气汞减排主要通过淘汰落后产能和完善协同控制设备实现,将贡献88.8%的总减排量.2020~2030年,铅冶炼通过增加再生铅比例贡献65.3%的总减排量.

This study predicted the atmospheric mercury emission trends of China's nonferrous metal smelting industry under different scenarios and analyzed the contributions of main emission abatement measures.The mercury reduction potential in2030will reach122.3t,which is82.9%of the emissions in2012.Atmospheric mercury emissions from zinc,lead,and copper smelters will be reduced by77.8,42.7,and1.8t,respectively.To achieve the emission reduction of atmospheric Hg,zinc smelters will mainly improve air pollution control devices.Atmospheric mercury emissions will reduce51.0and23.9t through this measure by2020and2030.Copper smelters will largely replace primary production with secondary production to reduce mercury emissions.The reduction proportion will reach61.1%and72.5%by2020and2030through this measure.For the emission control of lead smelters,the major measures are to eliminate the backward production capacity and to improve air pollution control devices before2020,contributing to88.8%of total emission reduction.During2020~2030,increasing the proportion of secondary production will be the most effective measures for lead smelters and will contribute to65.3%of total emission reduction.