垃圾填埋场及周边水系中汞污染调查

Mercury Pollution of Water System in Landfill Site

对上海老港垃圾填埋场渗滤液、地下水和地表径流水监测分析表明:渗滤液中的汞主要为以颗粒态汞(S-Hg)形式存在,污水处理系统可以使颗粒态汞(S-Hg)随颗粒物沉积到底泥中,但是对可溶态汞(D-Hg)去除没有明显作用;芦苇湿地可以有效地吸附和吸收渗滤液中各种形态汞,使汞浓度降到一个较低的水平;对地下水和地表水的分析结果显示,地下水基本没有受到汞污染,而地表水受到一定程度的污染。

S-Hg is the major forms of mercury in leachate,and sewage treatment system can reduce the content of S-Hg but have little effects on D-Hg.Reed-wetland system have a strong effects on removing of mercury from leachate.Groundwater is little polluted by mercury but surface water have a certain extent of mercury pollution.