基于包气带-含水层联合模型的污染迁移研究  

Study on Pollution Transfer Based on Coupling Model of Vadose Zone and Aquifer

作　　者：王雪[1] 张永波[1] 张志祥[1] 李彦荣[2] WANG Xue ZHANG Yongbo ZHANG Zhixiang LI Yanrong(College of Water Resources Science and Engineering College of Mining Technology, Taiyuan University of Technology, Taiyuan 030024, China)

机构地区：[1]太原理工大学水利科学与工程学院,太原030024 [2]太原理工大学矿业工程学院,太原030024

出　　处：《太原理工大学学报》2017年第5期805-810,共6页Journal of Taiyuan University of Technology

基　　金：国家自然科学基金资助项目(41572221);山西省自然科学基金资助项目(2014011001-2)

摘　　要：以山西某养殖基地污水调节池废水为研究目标,选取氨氮为泄漏事故下的模拟特征污染因子,采用Hydrus-1D模型模拟预测其在包气带中的迁移动态变化,最终得到氨氮到达地下水时的时间及浓度变化;将结果输入到Visual Modflow地下水数值模型中,可测出氨氮在地下水中的迁移超标范围及浓度变化。结果表明,包气带作为污染物进入地下水必须经过的介质,对污染物的截留作用明显,包气带-含水层联模型更能贴合实际污染物迁移转化过程,结果可为污染场地修复及地下水污染防治提供理论指导。A wastewater treatment tank wastewater from a farm in Shanxi was studied.Ammonia nitrogen was selected as the characteristic pollution factor of simulation prediction to forecast the transformation of migration in the vadose zone by using Hydrus-1D model,and finally get the changing time and concentration of ammonia reaching underground water.The results were input into the groundwater numerical model of Visual Modflow,and the range and concentration change of ammonia nitrogen migration in groundwater were obtained.Results show,the vadose zone is a medium that must be passed through when pollutants enter groundwater,the vadose zone-aquifer coupling model can better fit the actual pollutant migration and transformation process.The results can provide theoretical guidance for remediation of contaminated sites and prevention and control of groundwater pollution.

关 键 词：HYDRUS-1D 包气带 地下水 数值模拟 

分 类 号：X523[环境科学与工程—环境工程]