介质材料在可渗透反应墙中的应用进展

摘要

Permeable reactive barrier is developing into a new direction of remediation technologies for contaminated groundw- ater. The reactive media materials are the key for permeable reactive barrier to remediate contaminated groundwater successfully. The reactive media materials in permeable reactive barrier could be subdivided into reduction type, absorbent type, precipitation type and biodegradation type. The reaction mechanisms, applications and existing problems of the different types of reactive media materials are discussed respectively. Selection of the reactive media materials should be based on the mechanisms of the different reactive media materials, while the actual conditions of groundwater, pollution sources, human activities and economic costs should be considered synthetically to ensure that the permeable reactive barrier could work continually, effectively, economically and securely.%可渗透反应墙正发展成为修复污染地下水技术的新方向，其中介质材料是可渗透反应墙成功修复污染地下水的关键。可渗透反应墙介质材料可以细分为还原型、吸附型、沉淀型和降解型介质材料等四类，并分别从不同类型的介质材料的反应机理、应用情况以及存在的问题等方面加以阐述。可渗透反应墙介质材料的选择应在其反应机理的基础上，结合实际的地下水环境条件、污染源、人类活动和经济费用等加以综合考虑，以保证可渗透反应墙长期有效经济安全地运行。