摘要
选取某危废填埋场作为研究区域,结合地质及水文地质特性建立水文地质概念模型、水分运动和溶质迁移耦合模型,通过数值模拟手段定量计算并预测渗滤液污染物在地下水中的扩散模式。结果表明,受下游敏感点的强开采扰动影响,污染物迁移速度较快,地下水发生显著“捕获”效应,污染物将在1987 d左右到达下游敏感区域;模拟期污染羽最大迁移距离为875.62 m,超标范围最大可达9986.4 m^(2)。基于预测结果,提出建立源头预防过程监管末端治理的地下水污染风险防控体系。
A hazardous waste landfill was selected as the research site.A hydrogeological conceptual model and a coupled model of water movement and solute migration were established base on geological and hydro-geological characteristics to quantitatively calculate and predict the diffusion mode of pollutants in leachate in groundwater by numerical simulation.The results showed that significant“capture”effect occurred in groundwa-ter at downstream sensitive sites due to the disturbance of forced mining.The pollutants migrated quickly and would reach downstream sensitive area in around 1987 days.During the simulation period,the maximum migra-tion distance of pollution plume was 875.62 m,and the maximum range was 9986.4 m2 above the standard.Based on the prediction results,it was proposed to establish a groundwater pollution risk prevention and control system that included source prevention,process supervision and end treatment.
作者
尹芝华
王水
柏立森
吕良华
冯亚松
翟远征
YIN Zhihua;WANG Shui;BAI Lisen;LYU Lianghua;FENG Yasong;ZHAI Yuanzheng(Jiangsu Provincial Academy of Environmental Science,Jiangsu Provincial Key Laboratory of Environmental Engineering,Nanjing,Jiangsu 210036,China;Jiangsu Province Engineering Research Center of Soil and Groundwater Pollution Prevention and Control,Nanjing,Jiangsu 210036,China;Engineering Research Center of Groundwater Pollution Control and Remediation,Ministry of Education of China,Beijing 100875,China)
出处
《环境监测管理与技术》
CSCD
北大核心
2024年第4期77-80,86,共5页
The Administration and Technique of Environmental Monitoring
基金
国家重点研发计划基金资助项目(2022YFC3702500,2019YFC1804000)
地下水污染控制与修复教育部工程研究中心开放基金资助项目(GW202413)
中国博士后科学基金资助项目(2022M711397)。
关键词
危废填埋场
污染物迁移
数值模拟
环境风险防控
开采扰动
地下水
Hazardous waste landfill
Po-llutant migration
Numerical simulation
Environmental risk prevention and control
Mining disturbance
Groundwater
