PRB反应介质材料在地下水污染修复中的应用研究进展

PROGRESS OF APPLICATION OF PRB REACTION MEDIUM MATERIALS IN REMEDIATION OF CONTAMINATED GROUNDWATER

可渗透反应墙(permeable reactive barrier,PRB)作为地下水污染修复技术的新趋势,其反应区域介质是PRB研究内容的核心。按介质材料的去除原理可将其分为吸附类介质、沉淀类介质、还原类介质、降解类介质和组合类介质,评述了各类介质的适用范围与提升空间;介绍了介质筛选过程中可通过静态批实验、动态柱实验、模拟槽实验来研究介质材料的渗透性、长效性以及对污染物去除能力等性能。在此基础上,总结了我国PRB修复技术存在的问题,并提出了相关意见。

As a new trend of polluted groundwater remediation technology,the mainly research aim of PRB（ permeable reactive barrier） is to find out what＇s the media materials in reaction area. According to the mechanism of treating pollutants,the reactive media materials are divided into adsorbent type,precipitation type,reduction type,biodegradation type and combination type. In this paper,the scope of application and improvement direction of each medium were discussed. Also,removal rate of contaminants,permeability,long-term running effectiveness and other properties of the material could be figure out during media screening,which were obtained by batch experiment,column experiment,tank experiment. On this basis,the existing problems of PRB technology in China was summed up and relevant comments were put forward.