인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
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지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2019.12
- 수록면
- 733 - 733 (1page)
이용수
초록· 키워드
In Korea, algal bloom became an emerging environmental and social issue in the four major rivers after installation of 16 weirs though the Four Major Rivers Project (2010-2011). Korean government decided to open the gate in some of the weirs to mitigate the problem. As a result, the flow velocity in the rivers increased dramatically due to lowering the water level. In addition, it has also been found that the extent and intensity of algal bloom and dissolved oxygen (DO) deficiency is reduced. However, there is a lack of a comprehensive way to assess changes in self-purification capacity of the rivers by opening the weirs. Self-purification capacity is essential and important for the river to recover and maintain its existing condition. Therefore, it is necessary to study self-purification ability evaluation according to weir opening, considering physical, chemical, and biological factors comprehensively. In this study, we developed a simple water quality model (DynCSTR) based on the mass balance theory to evaluate the impacts according to the river environment change and applied it. The DynCSTR model assumes a completely mixed state of water body, thus, there is a limit when the spatial variability of hydrodynamic characteristics and water quality is large. We simulated the change of the self-purification capacity for two scenarios; before (management water level) and after (the lowest water level) opening the weirs. The self-purification coefficient (ka/kd), ... 전체 초록 보기
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