长春市某垃圾填埋场污染源带反应阻截方案设计研究

A study on the Design of Response Blocking Scheme for the Pollution Source zone of a Landfill in Changchun

以充分的水文地质数据和准确的污染物扩散模型为前提,设计并运用渗透反应墙(PRB)技术进行污染场地修复。结合长春市某垃圾填埋场污染场地实例,在获得模拟区域整体水文地质数据之后,通过GMS地下水流场模拟软件对有机污染物(COD)在地下环境中的扩散分布进行模拟,进而合理确定了渗透反应墙安装位置、填充材料以及长度、宽度、埋深等参数,得出在垃圾填埋场Ⅲ区东部至车间以内安装渗透反应墙为适宜。

On the premise of sufficient hydrogeological data and accurate pollutant diffusion model, the permeable reaction wall(PRB) technology is designed and applied to the remediation of contaminated sites. Combined with the case of a landfill pollution site in Changchun City, after obtaining the overall hydrogeological data of the simulation area, the GMS groundwater flow field simulation software is used to simulate the diffusion distribution of organic pollutants(COD) in the underground environment. Furthermore, the installation position, filling material, length, width and buried depth of the permeable reaction wall are determined reasonably. It is concluded that it is suitable to install the permeable reaction wall from the east of zone Ⅲ to the workshop.