【摘要】 应用原位修复地下水的新技术———渗透反应格栅(PRB),以被垃圾渗滤液污染的地下水为研究对象,分别以粉煤灰和膨润土为反应介质,设计了两种可渗透反应格栅。实验结果表明:两种反应介质主要利用吸附特性去除靶污染物,对COD的去除率分别达到60%和50%以上,对Cr6+、NH4+的去除率均为50%左右,说明PRB技术处理垃圾渗滤液对地下水的污染是可行的。还简要分析了PRB技术在实验过程中存在的问题,以及影响PRB反应介质的主要因素。更多还原

【Abstract】 Permeable reactive barrier(PRB) is a recently developed in-situ remediation technology for contaminated groundwater.Described the treatment of two kinds of PRB grate for trash percolating liquid of which reaction mediater were flyash and bentonite,respectively.The laboratory results performance showed that making use of adsorption charactor of the reaction mediater,the removal efficiencies of COD were 60% and 50%,and the removal efficiencies of sexivalent chromium and ammonium both were approximately 50%,the experiment indicated that the PRB technology was a feasible method for the treatment of Groundwater Polluted by Landfill Leachate.In addition,it was briefly analysis the problem and influence factor of PRB technology in laboratory-scale.更多还原