Hudak Paul F
Department of Geography and Environmental Science Program, University of North Texas, Denton, TX 76203-5279, USA.
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2008 Jun;43(7):731-7. doi: 10.1080/10934520801959898.
Alternative configurations of non-pumped wells filled with reactive media were evaluated for removing hypothetical contaminant plumes. All wells were screened across the saturated zone of a simulated unconfined aquifer. Three heterogeneous hydraulic conductivity distributions (cases) were considered. A mass transport model accounting for advection and hydrodynamic dispersion produced an initial contaminant plume for each case. Two reactive well configurations were evaluated for each case. In one configuration, evenly spaced wells occupied a linear transect perpendicular to regional groundwater flow, located downgradient of the contaminant plume. A second configuration involved the same number of wells, but along evenly spaced, nonlinear flow lines originating from the downgradient boundary of the contaminant plume. Mass transport modeling simulated contaminant plumes moving through the aquifer and wells. Results suggest that nonlinear configurations, which take into account local flow variations near the downgradient boundary of a contaminant plume, more efficiently reduce contaminant concentrations and better control offsite migration.
对填充有反应性介质的非抽水井的不同配置进行了评估，以去除假设的污染物羽流。所有的井都在模拟无压含水层的饱和带进行了筛管安装。考虑了三种非均质水力传导率分布（情况）。一个考虑平流和水动力弥散的传质模型为每种情况生成了初始污染物羽流。对每种情况评估了两种反应性井配置。在一种配置中，等间距的井占据垂直于区域地下水流的线性横断面，位于污染物羽流的下游。第二种配置涉及相同数量的井，但沿着从污染物羽流下游边界出发的等间距非线性流线。传质建模模拟了污染物羽流在含水层和井中的移动。结果表明，考虑污染物羽流下游边界附近局部水流变化的非线性配置能更有效地降低污染物浓度，并更好地控制场外迁移。
