한국물환경학회지 (Journal of Korean Society on Water Environment)

  • 제26권2호
  • /
  • Pages.231-242
  • /
  • 2010
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  • 2289-0971(pISSN)
  • /
  • 2289-098X(eISSN)
한국물환경학회 (Korean Society on Water Environment)
권호 표지

대청호 수류차단막 설치 위치에 따른 녹조제어 효과 분석

Analysis the Effects of Curtain Weir on the Control of Algal Bloom according to Installation Location in Daecheong Reservoir

  • Lee, Heung Soo (Department of Environmental Engineering, Chungbuk National University) ;
  • Chung, Se Woong (Department of Environmental Engineering, Chungbuk National University) ;
  • Jeong, Hee Young (Department of Environmental Engineering, Chungbuk National University) ;
  • Min, Byeong Hwan (Korea Water Resources Corporation)
  • 투고 : 2009.08.31
  • 심사 : 2010.02.18
  • 발행 : 2010.03.30
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초록

The objective of study was to determine an optimal location of a float-type curtain weir in Daecheong Reservoir and to assess its effectiveness for the control of algal blooms in the reservoir. CE-QUAL-W2, a laterally averaged two-dimensional hydrodynamic and eutrophication model, was modified to accommodate vertical displacement of the weir according to water surface fluctuation and applied to simulate the reservoir hydrodynamics and water quality changes for the reservoir. The model calibrated in a previous study was updated and validated for different hydrological conditions representing drought year (2008) and normal year (2006) for the study, and adequately simulated the temporal and spatial variations of water temperature, nutrients and algal (Chl-a) concentrations. The effectiveness of curtain weir on the control of algal bloom was evaluated by applying the validated model to 2001 and 2006 assuming 9 scenarios for different installation locations. The reduction rates of algal concentration were placed in the range of 11.2~40.3% and 20.3~56.7% for 2001 and 2006, respectively. Although, the performance of curtain weir was slightly varied for different locations and different hydrological years, overall, the performance was improved as the weir was installed further downstream.

키워드

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