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Modeling Fate and Transport of Organic and Nitrogen Species in Soil Aquifer Treatment-(I) Model Development and Verification  

Kim Jung-Woo (Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology)
Kim Jeong-Kon (Korea Institute of Water and Environment, Korea Water Resources Corporation)
Cha Woo-Suk (Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology)
Choi Hee-Chul (Center for Water Research, Gwangju Institute of Science and Technology)
Publication Information
Journal of Soil and Groundwater Environment / v.10, no.3, 2005 , pp. 9-15 More about this Journal
Abstract
Soil aquifer treatment is a water reuse technology that secondary or tertiary treated wastewater is infiltrated into the aquifer in which physical and biochemical reactions occur. Major consideration in SAT is the removal and transport of DOC and nitrogen species. In this study, reaction mechanism in SAT was examined considering nitrification, denitrification and organic oxidation. In addition, SAT modeling system was developed as the reaction mechanism was applied to groundwater flow and transport model. In verification of the reaction module by 1-dimensional unsaturated soil column test, the experimental data of all of the species, ammonium, nitrate, DOC and DO, were well matched with the simulation results. In sensitivity analysis, ammonium partition coefficient, dissolved oxygen inhibition constant and biomass decay rate affect ammonium, DOC and DO concentration of effluent, respectively.
Keywords
Soil aquifer treatment; DOC; Nitrogen species; Modeling; Unsaturated soil column;
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