垃圾渗漏液在包气带及含水层中的联合运移模拟  

The Combined Transport Simulation of Landfill Leachate in Aeration Zone and Aquifer

作　　者：周瑞静[1] 周磊[1] 陈瑾[1] 黄栋[1] 

机构地区：[1]北京市地质工程勘察院,北京100048

出　　处：《城市地质》2016年第1期16-20,共5页Urban Geology

摘　　要：近年来,全国各地新建了大量的垃圾填埋场,其中多有不符合垃圾处理处置场地建设规范的,垃圾填埋场渗滤液对地下水的污染风险也逐年凸显,这就要求对后续垃圾填埋场建设时,在环评阶段做好垃圾填埋场渗滤液对地下水的污染风险预测,为垃圾填埋场地下水污染预防设施的设计与建设提供指导。本文探索了垃圾渗滤液在包气带和含水层中的联合运移模拟,首先利用Hydrus建立包气带模型,模拟垃圾渗滤液中氨氮在包气带中的迁移转化,在此基础上用Visual Modflow软件建立地下含水层模型,对比渗滤液经过包气带过滤和没经过包气带过滤两种情景下的污染范围和程度。模拟结果显示,包气带和含水层联合运移模拟渗滤液泄漏后的运移途径和路线,更接近渗滤液进入含水层的实际情况。In recent years, a lot of garbage disposal sites have been built across the country. The risk of contamination to groundwater of landfill leachate has being increased year by year. Then, the pollution risk of landfill leachate to the groundwater is needed to predict at the stage of environmental impact assessment, which can provide guidance to the design and construction of the landfill pollution prevention facilities. This paper explores the method of combined transport simulation of landfill leachate in aeration zone and aquifer on the basis of one project example. The Hydrus model first has been chosen to simulate the distribution and conversion behavior of ammonia nitrogen in aeration zone. Then the numerical simulation of aquifer has been established by Visual Modflow-3D, to compare the contaminated scope and extent of the landfill leachate through the aeration zone or not. The simulation calculation results show that the route of landfill leachate is similar to the actual situation in the aquifer.

关 键 词：包气带 含水层 垃圾渗滤液 联合运移模拟 

分 类 号：X523[环境科学与工程—环境工程]