火电厂烟气脱硫石膏重金属含量监测与分析  

Survey and Analysis of Heavy Metals in FGD Gypsum from Coal-fired Power Plants

作　　者：李丽君[1] 张强[1] 刘平[1] 白光洁[1] 武文丽[1] 

机构地区：[1]山西省农业科学院农业环境与资源研究所,太原030031

出　　处：《水土保持学报》2015年第2期209-214,共6页Journal of Soil and Water Conservation

基　　金：国家星火重大专项(2012GA630001);山西省回国留学人员科研项目(2014-097)

摘　　要：为有效利用脱硫石膏改良盐碱地,避免改良过程中带来土壤重金属污染风险,在山西省境内不同地区选择有代表性的8个火电厂烟气脱硫废弃物-脱硫石膏采样点,在1a内每月定期进行脱硫石膏的采集及重金属（Cd、Ni、Pb、Cu、Zn、Cr、Hg、As）浓度的分析。结果表明,8个采样点脱硫石膏中重金属Cd、Ni、Pb、Cu、Zn、Cr、As含量基本低于适用于耕地的国家土壤环境质量二级标准（GB 15618-1995）,而1~8号采样点只有一小部分脱硫石膏中Hg含量低于适用于耕地的国家土壤环境质量二级标准（GB 15618-1995）。8号采样点除极个别批次重金属含量较1~7号采样点低之外,其余均高于1~7号采样点脱硫石膏中重金属浓度。因此,在利用脱硫石膏改良盐碱地之前,要明确脱硫石膏中不同重金属元素浓度,适量施用脱硫石膏,达到改良盐碱地,保证农产品安全,提高作物产量的目的。In order to protect the national grain safety and ecological safety,and develop a sustainable economy,it was important to improve sodic soils with desulfurized gypsum from coal-fired power plants.Representative 8coal-fired power plants were selected to collecting FGD gypsum in Shanxi Province,and the FGD gypsum were collected per month during November,2012 to October,2013.Contents of Cd,Ni,Pb,Cu,Zn,Cr,Hg and As in FGD gypsum were determined according to GB/T 17141-1997 for Cd,GB/T17139-1997 for Ni,GB/T 17140-1997 for Pb,GB/T 17138-1997 for Cu and Zn,HJ 491-2006 for Cr,GB/T 22105.1-2008 for Hg,GB/T 22105.2-2008 for As respectively.The results showed that the contents of heavy metals including Cd,Ni,Pb,Cu,Zn,Cr and As in FGD gypsum did not exceed the national control standard,but more than one third of Hg content exceeded the control standard.The value of heavy metals contents in No.1—7was lower than that of No.8in generally.In practice,the contents of heavy metals in FGD gypsum was important for sodic soils amelioration,because it might decide if the use of FGD gypsum induced heavy metals pollution in soil and in ground water.The technology of ameliorating sodic soils with FGD gypsum had demonstrated its application potentials.

关 键 词：脱硫石膏 重金属 盐碱地 

分 类 号：S156.4[农业科学—土壤学] X701.3[农业科学—农业基础科学]