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A Primary Study on the Potential of Floodplain Filtration in Korea  

Choi, Myung-Ho (Department of Environmental Engineering, Yeungnam University)
Kim, Kyeong-Soo (Department of Environmental Engineering, Yeungnam University)
Kim, Seung-Hyun (Department of Environmental Engineering, Yeungnam University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.31, no.1, 2009 , pp. 70-78 More about this Journal
Abstract
Floodplain areas of major South Korean rivers were determined by analyzing topographical maps and hydraulic properties of floodplain soil were measured using disc tension infiltrometer. To assess the possibility of treating secondary effluents of municipal wastewater with floodplain soil, a computer code for the analysis of unsaturated flow in soil was employed along with searches conducted in the literature. Based on the data generated, an estimate of total floodplain filtration capacity in Korea was obtained. The results of our study reveal that Korean floodplains have surface soil that is adequate for treating water. Moreover, the distributions of floodplains are substantial over the entire reaches of the rivers, indicating that the conditions are favorable for floodplain filtration as additional treatment of secondary effluent. The capacity of floodplain filtration in Korea is circa 182,000,000 $m^3$/day and most of the rivers are estimated to have enough capacity of floodplain filtration to meet all the secondary effluent, indicating that this technology may be expected to make further improvements on river water quality. Furthermore, this method may also be applied to better the source-water quality for drinking water.
Keywords
Floodplain Filtration; Floodplain Area; Infiltration Rate; Treatment Capacity; River Water Quality;
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Times Cited By KSCI : 2  (Citation Analysis)
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