福建省城市垃圾及其渗滤液的重金属污染

Heavy metal pollution in municipal refuse and landfill leachate in Fujian Province

对福建福州、南平、泉州、厦门、漳州、龙岩、三明7个主要城市垃圾的处理方式、污染状况、渗滤液及其对土壤的污染状况进行了系统调查,测定、分析了垃圾渗滤液及其浸蚀土壤中的Cd、Cr、Pb、Zn、Mn、Ni含量.结果表明:目前福建城市垃圾、垃圾渗滤液及其浸蚀土壤存在较严重的重金属污染;与国家污水综合排放标准相比,垃圾渗滤液中Mn、Ni和Cd超标;与国家地面水环境质量标准Ⅴ类标准相比,除了Zn,其余5种重金属(Cd、Cr、Pb、Mn、Ni)均超标;与土壤环境质量标准(2级)相比,垃圾渗滤液浸蚀土壤重金属(Zn、Mn、Ni、Pb、Cd)超标.

The refuse treatment model, pollution of refuse, landfill leachate of municipal refuse and its polluted soil of Fuzhou, Nanping, Quanzhou, Xiamen, Zhangzhou, Longyan and Sanming of Fujian Province were investigated, and the content of Cd, Cr, Pb, Zn, Mn and Ni in landfill leachate and its polluted soll were determined. The result showed the pollution of heavy metal was serious in refuse, landfill leachate and its polluted soil; the content of Mn, Ni and Cd was above the standard of national integrated wastewater discharge; the content of Cd, Cr, Pb, Mn, Ni was above the standard of China national ground water environment quali- ty level V except for the content of Zn ; the content of Zn, Mn, Ni, Pb and Cd five heavy metals was above the standard of China national environmental quality for soils（ Ⅱ ）.