利用HYDRUS-2D 软件模拟包气带中 Cr6+ 、 Cd2+ 迁移规律
打开文本图片集
中图分类号：X53 文献标志码：A
Simulation of Migration Patterns of Cr6+ and Cd2+ in Vadose Zone by Using HYDRUS-2D Software
LIU Qingsong，LIU Benhua， XU Jing，REN Miao，LUO Jie， XU Cong，FENG Guowei（School of Water Conservancyand Environment，University ofJinan，Jinan25oo22，China）
Abstract：To clearlyunderstand the migration ofheavy metals in the vadose zone，HYDRUS-2D software was employed to conductthenumerical simulationof thecontaminated vadose zonenearachemicalplant，andestablishamathematical model for soil moisture and solute transport. This model was used to simulate the migration of Cr6+ and Cd2+ in the unsaturated subsurface zoneofthe studyareaand monitor their transport trajectories within the soil matrix.Theresults show that （2 Cr6+ and Cd2+ are significantly enriched within 1 m of the surface depth，and their vertical enrichment patterns are similar. （2号 Cd2+ reaches the water table after 2 OOo d of leakage，with a mass concentration of 6.18 μτ g/L at the water table after 3 650 d of leakage. At a distance of 1m from the leakage point，both Cr6+ and Cd2+ reach the water table after 2 OOO d of leakage，and their mass concentrations at the water table are 3.79μg/L and 1.89μg/L respectively after 3 650 d of leakage.
Keywords：soil pollution； solute transport；numerical simulation；vadose zone
废水、废气、废渣排放造成的土地中的重金属污染问题日趋严重。（剩余8963字）
