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Application of Hybrid Constructed Wetland System for Stream Water Quality Improvement  

Kim, Seung-jun (Water Environment and Remediation Research Center, Korea Institute of Science and Technology)
Choi, Yong-su (Water Environment and Remediation Research Center, Korea Institute of Science and Technology)
Bae, Woo-keun (Department of Civil and Environmental Engineering, Hanyang University)
Publication Information
Journal of Korean Society on Water Environment / v.22, no.2, 2006 , pp. 209-214 More about this Journal
Abstract
The purpose of this study is to improve the stream water quality by the experimental hybrid constructed wetland system. It consisted of the water layer, sand bed planted reeds, irises and roses, gravel bed, yellow-soil media bed and a flow shifter (FS) which can reverse top and bottom flow in the middle of the wetland. The organic compounds and nitrogen removal efficiencies varied with the seasons, namely temperature change. In summer, the mean efficiencies of COD and TN in the outflow from this wetland system were 63.4 and 48.0% and shown the highest, respectively, whereas, the suspended solids and phosphorus removal efficiencies seemed to be less affected by temperature. As a result of inspecting the decreasing trend of pollutants, nitrification-denitrification in the wetland was the major removal mechanism for nitrogen, the nitrogen reduction was especially enhanced by the application of a FS in the wetland, and phosphorus reduction was mainly occurred as a consequence of adsorption of the yellow-soil media.
Keywords
Flow shifter; Hybrid constructed wetland system; Stream; Yellow-soil media;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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