基于过程模拟的地下水污染风险评价方法研究

The method study on groundwater pollution risk assessment based on process simulation

通过对简易垃圾填埋场污染地下水过程的系统分析,提出了以抽水井作为保护目标进行地下水污染风险评价的方法,确定了地下水污染风险评价因子,建立了基于过程模拟的污染物迁移转化数学模型.以特征污染物Cl-的污染范围和程度划分了风险等级.利用构建的地下水污染风险评价方法,以我国北方某简易垃圾填埋场作为案例进行了地下水污染风险评价.结果表明,污染源与污染物迁移转化的共同作用决定了地下水污染范围和风险等级.地下水污染风险评价方法的建立为开展简易垃圾填埋场地下水污染有效监管提供了一种方法.

Based on systematical analysis of groundwater pollution processes by simple waste landfills, In this work, pumping wells were considered as protection goals, a pollutants transporting and transforming mathematical risk assessment model based on process modeling was developed. The groundwater contamination risk evaluation factors were identified; Groundwater pollution risk levels were classified according to the pollution range and extent of chloride ion （CI）. A simple landfill located in north of China was choose as a case to study groundwater pollution risk assessment. The level of groundwater pollution risk assessment was determined by pollution source and process of the pollutant migration and transformation. Establishment of groundwater pollution risk assessment model could be useful for effective management of groundwater pollution by simple waste landfill.