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2019 Vol.6, Issue 4 Preview Page

Original Article

Application and Evaluation of the Sheet Flow Channel for Water Quality Improvement in the Stream

하천 내 수질 개선을 위한 박층류 하도의 적용 및 평가

Du Han Lee1*
,
Myounghwan Kim2
,
Jung-Eun Gu3
,
Won Kim4
이 두한1*
,
김 명환2
,
구 정은3
,
김 원4
1Research Fellow, Department of Land, Water and Environment Research, Korea Institute of Civil Engineering and Building Technology, Goyang-si, Gyeonggi-do, 10223, Korea
2Researcher, Department of Land, Water and Environment Research, Korea Institute of Civil Engineering and Building Technology, Goyang-si, Gyeonggi-do, 10223, Korea
3Assistant Manager, Department of Water Industry Promotion, Korea Water Cluster, Korea Environment Corporation, Deagu, 43008, Korea
4Senior Research Fellow, Department of Land, Water and Environment Research, Korea Institute of Civil Engineering and Building Technology, Goyang-si, Gyeonggi-do, 10223, Korea
1한국건설기술연구원 국토보전연구본부 연구위원
2한국건설기술연구원 국토보전연구본부 연구원
3한국환경공단 물융합연구부 부팀장
4한국건설기술연구원 국토보전연구본부 선임연구위원
* Corresponding Author
31 December 2019. pp. 208-216
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Abstract

This study investigated design factors and removal efficiencies of a sheet flow channel as natural type water improvement techniques in the stream. The channel was designed considering the design factors, then constructed and monitored in the test bed of the Osan stream’s floodplain. Water lever, velocity, discharge, T-P, T-N, and NO3-N were monitored and the removal efficiencies and design formula were suggested. Overall efficiencies of T-P, T-N, and NO3-N range 10 - 20%, and they show consistent relations with residence times. Minimum velocity requirement is also suggested from the relation of algae conditions and velocities. Relation formula of residence time and removal efficiency will be applicable in the design and operation process of a sheet flow channel.

Keywords
Algae formation and velocity
Design factor
Relation of residence time and removal efficiency
Removal efficiency
Sheet flow channel

본 연구는 하천 내의 자연형 수질정화기법으로 박층류 하도의 설계방법과 효율에 대해서 연구하였다. 박층류 하도의 설계인자를 고려하여 설계를 수행하고 오산천 고수부지에 시험구간을 조성하여 모니터링을 수행하였다. 수위, 유속, 유량, T-N, T-P, NO3-N 등에 대한 모니터링 결과를 이용하여 제거효율을 평가하고 설계식을 제시하였다. T-N, T-P, NO3-N 등의 제거효율은 10 - 20%로 나타났으며 체류시간과 일정한 관계를 나타내고 있다. 또한 조류 형성과 유속 간의 관계를 통해 최소 유속 조건을 제시하였다. 본 연구에서 제시된 체류시간과 제거효율의 관계식은 차집수로 설계와 운영에 유용할 것으로 기대된다.

키워드
조류형성과 유속
설계인자
체류시간과 제거효율 관계
제거효율
박층류 하도
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Information
  • Publisher :Korean Society of Ecology and Infrastructure Engineering
  • Publisher(Ko) :응용생태공학회
  • Journal Title :Ecology and Resilient Infrastructure
  • Journal Title(Ko) :응용생태공학회 논문집
  • Volume : 6
  • No :4
  • Pages :208-216
  • Received Date : 2019-10-23
  • Revised Date : 2019-11-11
  • Accepted Date : 2019-11-18
  • DOI :https://doi.org/10.17820/eri.2019.6.4.208
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