危险废物填埋场地下水污染污染物迁移模拟研究

Simulation of Migration of Groundwater Pollutants in Hazardous Waste Landfill Sites

危险废物填埋场地下水污染污染物的迁移具有不确定性,难以进行精准模拟,因此提出危险废物填埋场地下水污染污染物迁移模拟方法。结合研究区地质和水文条件,划定地下水数值模拟范围,并根据其构建非稳定地下水流系统数学模型实现边界与含水层概化处理。结合概化结果实施网格剖分并生成研究区的三维网格模型,并以三维网格模型和Visual Modflow为基础,模拟了铬、铅的迁移过程,实现危险废物填埋场地下水污染污染物迁移模拟。实验结果表明:该方法能够准确模拟1000天、1460天、7300天后铬、铅的迁移过程,可以为危险废物处理提供科学依据。

The migration of groundwater pollutants in hazardous waste landfill sites is uncertain and difficult to simulate accurately.Therefore,a simulation method for the migration of groundwater pollutants in hazardous waste landfill sites is proposed.Based on the geological and hydrological conditions of the research area,the numerical simulation range of groundwater is delineated,and a mathematical model of the unstable groundwater flow system is constructed based on it to achieve generalized treatment of boundaries and aquifers.Based on the generalization results,a three-dimensional grid model of the study area was generated by implementing grid partitioning.The migration process of phosphorus and lead was simulated using the three-dimensional grid model and Visual Modflow,achieving simulation of the migration of groundwater pollutants in hazardous waste landfill sites.The experimental results show that this method can accurately simulate the migration process of phosphorus and lead after 1000 days,1460 days,and 7300 days,and can provide scientific basis for hazardous waste treatment.