Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
권호 표지

Application of Hybrid Constructed Wetland System for Stream Water Quality Improvement

오염하천 수질개선을 위한 Hybrid형 인공습지의 적용

  • 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)
  • 김승준 (한국과학기술연구원 수질환경 및 복원연구센터) ;
  • 최용수 (한국과학기술연구원 수질환경 및 복원연구센터) ;
  • 배우근 (한양대학교 토목환경공학과)
  • Received : 2005.07.04
  • Accepted : 2006.01.11
  • Published : 2006.03.30
Download PDF
⟨ Previous Next ⟩

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

References

  1. APHA, AWWA, WEF, Standard Methods for the Examination of Water and Wastewater, 20th edition, APHA, Washington D. C. USA (1998)
  2. Brix, H., Wastewater Treatment in Constructed Wetlands: System Design, Removal Processes, Treatment Performance, IN: Constructed wetlands for water quality improvement, G.A. Moshiri (ed.) Lewis Publishers, Chapter 2. (1993)
  3. Gersberg, R. M., Elkins, B. V. and Goldman, C. R., Nitrogen Removal in Artificial Wetlands, Water Res., 17(9), pp. 1009-1014 (1983) https://doi.org/10.1016/0043-1354(83)90041-6
  4. Kadlec, R. H. and Knight, R. L., Treatment Wetlands, Lewis Publishers, Boca Raton, Florida (1996)
  5. Reddy, K. R., Patrick, W. H. Jr. and Lindau, C. W., Nitrification- Denitrification at the Plant Root-Sediment Interface in Wetlands, Limnof Oceanogr., 34(6), pp. 1004-1013 (1989) https://doi.org/10.4319/lo.1989.34.6.1004
  6. Stone, K. C., Hunt, P. G., Novak, J. M. and Johnson, M. H., In-stream Wetland Design for Non-point Source Pollution Abatement, Transactions of ASAE, 19(2), pp. 171-175 (2003)
  7. U.S.EPA. Manual- Constructed Wetlands Treatment of Municipal Wastewaters, EPA/625/R-99/010, Cincinnati, Ohio USA (1999)