受氯代烃类污染的地下水环境修复研究进展

越来越多的地下水源正遭受氯代烃类有机物的污染,氯代烃类的地下环境行为及其污染环境的修复技术是当前环境学界的一个热点。目前修复这类污染环境的技术主要有抽出处理、渗透性反应墙和生物修复等。其中研究最多、应用最广的是利用表面活性剂强化抽出处理技术、零价铁降解氯代烃类的渗透性反应墙技术以及原位强化生物修复技术。零价铁反应墙如何长期稳定运行是目前的研究难题,也是该技术的发展目标。强化生物修复是具有巨大发展潜力的一项新兴技术,构建一个能同时降解多组分污染物的微生物生态群落并成功引入污染场地发挥最大功效,是地下水环境生物修复技术研究中的难点,也将是热点。

Remediation of Groundwater Contaminated by Chlorinated Hydrocarbons

Chlorinated hydrocarbons are contaminating soil and groundwater increasingly.Their behaviors in subsurface and the pollution remediation are the hot point in environmental science and technology field.The main remedial options for these chlorinated organics in subsurface are pumping-and-treat,permeable reactive barrier(PRB),bioremediation and so on.The surfactant-enhanced remediation,Zero-valent iron PRB and enhanced in-situ bioremediation are focused strongly and used widely.It is a difficult problem and a hot point to make zero-valent barrier work effectively for a long term.Enhanced bioremediation is a most potential remedial technology,which is attracting more and more attention.How to build a biocommunity that can degrade multifarious contaminants and then draw into polluted place successfully will be the most difficult problem.