简易垃圾填埋场地下水污染风险评价  

Groundwater Pollution Risk Assessment for Simple Waste Landfill

作　　者：孙法圣[1] 程品[1] 张博[1] 何连生[2] 栾奇[1] 

机构地区：[1]吉林大学环境与资源学院,吉林长春130021 [2]中国环境科学研究院水环境系统工程研究室,北京100012

出　　处：《人民黄河》2014年第5期76-78,共3页Yellow River

基　　金：环境保护公益性行业科研专项(2011467010)

摘　　要：根据地下水污染的过程提出了一种简易垃圾填埋场对地下水污染风险的评价方法。首先假定地下水污染风险的表征,划定5个风险等级的分布范围,然后使用MODFLOW和MT3D软件以反演的方式推算出这5个风险发生时的污染源强,以此对某简易垃圾填埋场地下水污染风险作出评价,最后针对未来周边地下水开采量将会增加等场景,通过数值模拟得到了可能促使较高风险发生的因素,提出了降低风险等级的措施。结果表明,基于物理过程的地下水污染风险评价方法可以反映地下水的动态特征和污染物的运移状况,还可以对多种假设场景进行验证,对于风险受体来说,可以较好地刻画风险水平的分布。This paper presented a groundwater pollution risk assessment method of simple waste landfill based on groundwater pollution process. Firstly,it assumed the risk characterization of groundwater pollution before delimit the five levels of risk distribution;secondly,it used the MODF-LOW and MT3D software to determine the pollution intensity of each risk level through the method of inversion;thirdly,it took it as a criterion to evaluate the risk level of a simple waste landfill;finally,according to the case that exploitation of the groundwater will increase in the future,it ob-tained the factors that may cause a higher risk level by numerical simulation and put forward some measures to reduce the risk level. The results show that groundwater pollution risk assessment method based on the physical process can reflect the dynamic characteristics of the groundwater and the migration of contaminant;meanwhile,it can verify a variety of hypothetical scenarios,which can describe the level of risk distribution well for risk receptors.

关 键 词：垃圾填埋场 基于过程 地下水污染 风险评价 

分 类 号：X523[环境科学与工程—环境工程]