한국수자원학회논문집 (Journal of Korea Water Resources Association)

  • 제48권10호
  • /
  • Pages.857-868
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  • 2015
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  • 2799-8746(pISSN)
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  • 2799-8754(eISSN)
한국수자원학회 (Korea Water Resources Association)
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CE-QUAL-W2를 이용한 진양호 취수량 변화에 따른 수질영향 분석

Analysis of Water Quality Impact for Water Intake in Jinyang Reservoir Using CE-QUAL-W2

  • 탁용훈 (인제대학교 환경공학과) ;
  • 김영도 (인제대학교 환경공학과(낙동강유역환경연구센터)) ;
  • 정선아 (한국수자원공사 K-water연구원) ;
  • 정세웅 (충북대학교 환경공학과)
  • Tak, Yong Hun (Department of Environmental Engineering, Inje University) ;
  • Kim, Young Do (Department of Environmental Engineering, Inje University) ;
  • Chong, Sun-a (K-water Institute, Korea Water Resources Corporation) ;
  • Chung, Se Woong (Dept. of Environmental Engineering, Chungbuk National University)
  • 투고 : 2015.03.05
  • 심사 : 2015.09.11
  • 발행 : 2015.10.31
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초록

저수지의 효과적인 수질관리를 위해서는 신뢰도 높은 수리 및 수질모형이 필요하며, 이러한 모형의 성능은 다양한 수문사상에 대하여 적용함으로써 검증할 수 있다. CE-QUAL-W2 모형은 횡방향 평균 2차원 수리 및 수질 모형으로써 진양호와 같이 수체의 수심과 길이에 비해 폭이 좁은 저수지에 적합한 모형으로 앞선 연구자들에서 많이 사용되어 왔다. 본 연구에서는 용수수요가 증가할 것으로 예상되는 남강댐 유역에 대하여 풍수년인 2011년과 평수년인 2009년의 수문사상에 대하여 검보정을 실시하였고, 보정년도인 2011년의 수문사상과 수질 조건을 이용하여 취수량 증가에 대한 영향을 모의하였다. 모의 결과취수량을 변화시킴에 따라 T-N, T-P 및 Chlorophyll-${\alpha}$ 농도는 증가하는 것으로 나타났고, 특히 갈수기에 각각 최대 62.53%, 39.07%, 232.19% 증가하는 것으로 나타났으며, Chlorophyll-${\alpha}$ 농도의 변화는 T-P의 변화특성과 비슷한 추세를 보였다.

Hydraulic and water quality models with high reliability are necessary for the efficient management of water quality in the reservoir. The model capacity can be demonstrated by the application for the various hydrological conditions. CE-QUAL-W2 model is laterally averaged two-dimensional hydraulic and water quality model. The W2 model, which is suitable for the narrow reservoir like the Jinyang reservoir as compared with the depth and length of waterbody, has been frequently used by many researchers. Namgang watershed is expected to increase the water demand. In this study, the W2 model is validated under two different hydrological conditions; wet year (2011) and normal year (2009). Using hydrological and water quality condition for calibration, 2011, the effect of water intake increase was simulated. The simulation results showed that the increase of water intake led to increase the concentrations in total nitrogen, total phosphorus and Chlorophyll-${\alpha}$ concentration. Especially the concentration increase was appeared during the dry season in each of up to 62.53% (Total nitrogen), 39.07% (Total phosphorus) and 232.19% (Chlorophyll-${\alpha}$). The changes of chlorophyll-${\alpha}$ is similar to those of total phosphorus concentration.

키워드

참고문헌

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