基于GMS的某遗留场地地下水氨氮污染修复模拟研究  

Simulation study on ammonia nitrogen of groundwater pollution restoration at a legacy site based on GMS

作　　者：赵亚辉 李婷 章玲玲 许银 ZHAO Ya-hui;LI Ting;ZHANG Ling-ling;XU Yin(Xiangtan University College of Environment and Resources,Xiangtan,Hunan 411105,China;Key Laboratory of Environmental behavior and Control principles of New Pollutants in Hunan Province,Xiangtan,Hunan411105,China)

机构地区：[1]湘潭大学环境与资源学院,湖南湘潭411105 [2]湖南省新污染物的环境行为与控制原理重点实验室,湖南湘潭411105

出　　处：《地下水》2023年第4期5-8,共4页Ground water

基　　金：湖南省科技人才托举工程-年轻优秀科技人才(2020TJ-N09);郴州国家可持续发展议程创新示范区建设创新型省份专项(2019sfq37);湖南省教育厅重点项目(21A0112)。

摘　　要：以岳阳市某遗留场地为例,利用GMS(Groundwater Modeling System)模拟分析了该遗留场地污染物氨氮在地下水的迁移扩散规律,并在此基础上,利用地下水异位修复技术—抽出-处理技术对其进行修复模拟。模拟结果表明,污染物氨氮随着地下水的流动而运移,与地下水水流方向大致相同且向临近湖方向运移。因此,考虑总抽水量、抽水井个数以及修复时间三个关键因素,利用GMS软件进行重复验算,得出三种较为可靠的抽水方案,对比,筛选出最优二,修复时间最短(610 d),总抽水量最少(8.7×104 m^(3)),并且在抽水过程中通过实时监测污染物变化情况,及时优化抽水方案中的参数以达到节约成本、降低修复时间和提高修复率的效果。Taking as an example the groundwater pollutionrestoration of brownfield in Yueyang,Hunan province,the rules ofthe pollutants migration and diffusion in groundwater were simulated by GMS(Groundwater Modeling System),on this basis,the groundwater ex-situ remediation technology-pumping and treating technology wasconducted on the site remediation.The simulation results show that all pollutants were migrated with the groundwater,which was roughly the same direction as the flow of groundwater and finally flowed into the near lake.Therefore,three critical factors,the total pumping capacity,the number of pumped wells and the remediation time were simulated by GMS for selecting the optimum solutions in pumping-treating method.After GMS simulation process,three types of reliable pumping schemes were obtained.Among these,scheme two with shortest restoration time(610 days)and lowest volume of underground water pumping(8.7×104 m^(3))was considered to be the main approach for restoration of the brownfield site.Moreover,during the process of pumping,by detecting the changes of pollutants concentration online and optimizingparameters in the pumping scheme in time to achieve a desired effect with cost saving,lower time-consumption,and high restoration efficiency.

关 键 词：GMS 遗留场地 地下水污染物迁移规律 异位修复技术 分布特征 

分 类 号：P641.8[天文地球—地质矿产勘探]