Computer Modeling Approach to Optimize Pumping for Containment of LNAPL Contamination in Unconfined Aquifers

by Grant S. Cooper, Jr., Utah State Univ, Logan, United States,
R. C. Peralta, Utah State Univ, Logan, United States,
J. J. Kaluarachchi, Utah State Univ, Logan, United States,

Document Type: Proceeding Paper

Part of: Management of Irrigation and Drainage Systems: Integrated Perspectives


This paper presents an approach to optimize pumping for immobilizing a floating contaminant consisting of a light non-aqueous phase liquid in an unconfined aquifer. The approach combines operations research optimization, detailed simulation and statistical analysis to determine the best pumping strategy to capture the free oil product not left behind as residual oil. This modeling technique derives regression equations describing system response to unit pumping stimuli. The multiple step statistical approach is applicable to complex nonlinear problems. The approach is well suited for addressing the multiphase flow problem of oil contamination in an unconfined aquifer.

Subject Headings: Computer models | Optimization models | Hydrologic models | Pumps | Nonaqueous phase liquids | Pollution | Aquifers | Groundwater pollution

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