利用铁屑腐蚀电池原位修复被氯代烃污染地下水的研究进展

简述了氯代烃的主要物理性质和用途，认为铁屑腐蚀电池处理氯代烃污水是基于氧化还原反应、铁屑中活性炭微粒对氯代烃的吸附与对反应的催化、氯离子对氧化膜的破坏和微电池的电场效应等原理；简要总结了迄今利用铁屑去除氯代烃的室内实验和利用原位铁屑反应墙处理地下水中的氯代烃污染研究所取得的成果，认为这种反应墙是一种效果好，成本低，维护方便，有望投入商业运行的最佳方法，并指出了其存在的问题。

ADVANCES IN TECHNOLOGY OF APPLYING IRON FILINGS CORROSIVE-CELL TO THE IN-SITU REMEDIATION OF GROUNDWATER POLLUTED BY CHLORINATED HYDROCARBONS

The paper first introduces the chief physical properties of the chlorinated hydrocarbons and their major uses.The dechlorination of the chlorinated hydrocarbon by electrolytic iron is based on the laws of redox reactions,the adsorption of the pollutants by tiny granular activated carbon among the iron filings,the catalytic process of the tiny granular carbon,the destruction of the oxidational membrane on the iron surface by the active chloride ion and the effect of the tiny electric fields.After outlining the advances in the treatment experiments and production on the groundwater polluted by chlorinated hydrocarbon,it is concluded that the application of the iron filings corrosive cell to the in situ removal of chlorinated hydrocarbon in the aquifer is a preferential method.But before it can be widely used,many problems must be solved,especially the mechanism of the reactions must be described more clearly.Up to now, the parameters(such as the wide of the wall,the content of the iron filings) cannot be accurately determined cannot be,which needs the design of iron walls according to the specific conditions(the concentrations of the chlorinated hydrocarbons,the temperature of the groundwater,the rate of the removing chlorinated hydrocarbon and so on) in the aquifers.