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Removal of Dissolved Iron in Groundwater by Injection-and-Pumping Technique: Application of Reactive Transport Modeling  

Choi, Byoung-Young (Department of Earth and Environmental Sciences and the Environmental Geosphere Research Laboratory (EGRL))
Yun, Seong-Taek (Department of Earth and Environmental Sciences and the Environmental Geosphere Research Laboratory (EGRL))
Kim, Kyoung-Ho (Department of Earth and Environmental Sciences and the Environmental Geosphere Research Laboratory (EGRL))
Koh, Yong-Kwon (High Level Waste Disposal Technology Center, Korea Atomic Energy Research Institute)
Kim, Kang-Joo (School of Civil & Environmental Engineering, Kunsan National University)
Publication Information
Journal of Soil and Groundwater Environment / v.12, no.6, 2007 , pp. 29-37 More about this Journal
Abstract
Shallow alluvial groundwaters in Korea of tell exceed the Korean Drinking Water Standard for dissolved iron (0.3 mg/L), which is one of the important water quality problems, especially in the use of bank infiltration technique. Using the reactive transport modeling, in this study we simulated the effectiveness of injection-and-pumping technique to remove dissolved iron in groundwater. The results of simulation showed that pumping of groundwater after injection of oxygenated water into aquifers is very effective to acquire the permissible water quality level. Groundwater withdrawal up to several times of irjected water in volume can be applicable to yield drinkable water. Potential problems such as clogging and permeability lowering due to in-situ precipitation of iron hydroxides may be insignificant. We also discuss on the mechanism and spatial extent of iron removal in aquifer.
Keywords
Alluvial groundwater; Removal of dissolved iron; Injection-and-pumping; Reactive transport modeling;
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