Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Performance Study on Pilot-scale Constructed Wetlands in order to Restore Contaminated Stream

오염하천의 정화를 위한 파일럿 규모의 인공습지 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 : 2006.01.20
  • Accepted : 2006.04.12
  • Published : 2006.05.30
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Abstract

The purpose of this study is to improve the polluted stream water quality by pilot-scale five different constructed wetlands (CWs). Cell 1 to 3 are newly designed 2SFCW (Surface-subsurface flow CW) with 1 to 3 flow shifters (FS) in the middle of the wetland system. Cell 4 and 5 are control CW (CCW), but Cell 5 is the same type as Cell 3. The FS, which converts the route of surface and subsurface flow between two wetlands connected in series, was able to enhance the treatability of TN via nitrification and denitrification and of SS due to filtration and sedimentation. The void fraction and dispersion number of Cell 1, 2 and 3 obtained from the RTD analysis were found to be 0.73 and 0.17, respectively. COD and TP removal efficiencies of Cell 1 to 3 were similar to that of Cell 4 and 5. SS removal efficiencies of Cell 1 to 3 and 5 with FS were 5-10% higher than that of Cell 4 without FS. TN removal efficiencies of Cell 1 to 3 were 3-14% higher than that of Cell 4 and 5. The average $R^2$ values of COD, SS, TN and TP obtained from nonlinear regression analysis were similar to the results of other researchers.

Keywords

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