基于不确定性的废物填埋场地下水污染风险评价模型研究  

Groundwater Pollution Risk Assessment Model of Waste Landfill Based on Uncertainty

作　　者：张芳 Zhang Fang(Jiayuguan City’s Bureau of Ecology and Environment,Jiayuguan 735100,China)

机构地区：[1]嘉峪关市生态环境局生态与农村环保站,甘肃嘉峪关735100

出　　处：《环境科学与管理》2023年第8期189-194,共6页Environmental Science and Management

摘　　要：废物填埋场规模的扩张导致周围地下水污染情况逐渐严重,为此,提出基于不确定性的废物填埋场地下水污染风险评价模型研究。深入分析废物填埋场污染物运移情况,并确定了污染物浓度初始分布函数与运移方程,构建地下水污染风险评价体系,确定评价指标的评分及其分级标准,基于层次分析法计算评价指标的权重数值,采用加权求和法构建地下水污染风险评价模型,依据制定规则判定污染风险等级,实现地下水污染风险的精准评价。实验结果显示:应用构建模型获得的观测井中污染物浓度与地下水污染风险评价结果更接近实际数值。The expansion of waste landfills has led to increasingly severe groundwater pollution in the surrounding areas.Therefore,an uncertainty based groundwater pollution risk assessment model for waste landfills is proposed.The study analyzed the transport of pollutants in waste landfills to determine the initial distribution function and transport equation of pollutant concentration.It constructed a groundwater pollution risk assessment system,determined the scoring and grading standards of evaluation indicators and calculated the weight value of evaluation indicators based on Analytic Hierarchy Process.Weighted summation method was used to construct a groundwater pollution risk assessment model and determine the pollution risk level based on the established rules to assess the groundwater pollution risks precisely.The experimental results show that the pollutant concentration in the observation wells obtained by applying the constructed model is closer to the actual values of groundwater pollution risk assessment.

关 键 词：地下水污染 不确定性 废物填埋场 评价指标体系构建 污染风险评价 

分 类 号：X820.4[环境科学与工程—环境工程]