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Impact of a Coal-Fired Power Plant Shutdown Campaign on Heavy Metal Emissions in China

机译：燃煤电厂停工运动对中国重金属排放的影响

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摘要

Recently, China has committed to decommissioning the heavy metal (HM) intensive coal-fired power plants (CFPPs), small units especially, yet a quantitative assessment for the impact on HM emissions remains poorly understood. This study, for the first time, compiles a plant-specific inventory for six HMs (Hg, As, Se, Pb, Cd, and Cr) avoided by CFPPs decommissioned in China during the 12th Five Year Plan period. The reduced HM amounts to 271.58 t (9.19 t Hg, 45.84 t As, 60.76 t Se, 85.30 t Pb, 1.74 t Cd, and 68.75 t Cr), accounting for 12.71% of the total emissions from all China's CFPPs in 2010. Small units which have low boiler efficiency and lack air pollutant control devices are more than tenfold HM-intensive as the large units. The detailed HM emission factors for each CFPP decommissioned in each provincial region are also identified. HM content in the coal consumed is a key parameter to determine their corresponding emission factors, while the capacity of decommissioned coal plants plays a decisive role in the reduced emissions. The high-resolution inventory not only verifies China's progress in alleviating HM pollution, but also provides basis for further investigation into HM relevant environmental and human health impact.
机译：最近，中国已承诺将重金属（HM）密集型燃煤电厂（CFPP）（特别是小型机组）退役，但对于对HM排放影响的定量评估仍知之甚少。这项研究首次编制了针对十二五计划期间在中国退役的CFPP避免的六种重金属（汞，砷，硒，铅，镉和铬）的工厂特定清单。降低的重金属含量为271.58吨（9.19吨汞，45.84吨砷，60.76吨硒，85.30吨铅，1.74吨镉和68.75吨铬），占2010年中国所有CFPP排放总量的12.71％。与大型机组相比，锅炉效率低且缺乏空气污染物控制装置的机组对HM的要求高十倍以上。还确定了每个省地区退役的每个CFPP的详细HM排放因子。所消耗煤炭中的HM含量是确定其相应排放因子的关键参数，而退役燃煤电厂的产能在减少排放中起决定性作用。高分辨率清单不仅验证了中国在减轻HM污染方面的进展，而且为进一步调查HM相关的环境和人类健康影响提供了依据。

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  • 来源
    《Environmental Science & Technology》 |2019年第23期|14063-14069|共7页
  • 作者

    Zhou Sili; Wei Wendong; Chen Long; Zhang Zengkai; Liu Zhaohui; Wang Yi; Kong Jiayue; Li Jiashuo;

  • 作者单位

    Huazhong Univ Sci & Technol Sch Energy & Power Engn State Key Lab Coal Combust Wuhan 430074 Hubei Peoples R China;

    Univ Shanghai Sci & Technol Sch Business Shanghai 200093 Peoples R China;

    East China Normal Univ Sch Geog Sci Minist Educ Key Lab Geog Informat Sci Shanghai 200241 Peoples R China;

    Tianjin Univ Coll Management & Econ Tianjin 300000 Peoples R China;

    Huazhong Univ Sci & Technol Sch Energy & Power Engn Wuhan 430074 Hubei Peoples R China;

    Shandong Univ Inst Blue & Green Dev Weihai 264209 Shandong Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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