한국물환경학회지 (Journal of Korean Society on Water Environment)

  • 제36권2호
  • /
  • Pages.89-97
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  • 2020
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  • 2289-0971(pISSN)
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  • 2289-098X(eISSN)
한국물환경학회 (Korean Society on Water Environment)
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북한강에 연속된 댐 구간 방류수와 하류 하천간 수질 관계 분석 연구

A Study on the Water Quality Relationship between Continuous Dam Discharge and Downstream in North Han River

  • 김지원 (이화여자대학교 환경공학과) ;
  • 이혜원 (이화여자대학교 기후환경변화예측연구센터) ;
  • 이용석 (한림성심대학교 보건환경과) ;
  • 최정현 (이화여자대학교 환경공학과)
  • Kim, Ji Won (Department of Environmental Engineering, Ewha Womans University) ;
  • Lee, Hye Won (Center for Climate/Environment Change Prediction Research, Ewha Womans University) ;
  • Lee, Yong Seok (Department of Health and Environmen, Hallym Polytechnic University) ;
  • Choi, Jung Hyun (Department of Environmental Engineering, Ewha Womans University)
  • 투고 : 2019.09.18
  • 심사 : 2020.02.07
  • 발행 : 2020.03.30
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초록

North Han River is a very unique type of water system, where Hwacheon, Chuncheon, Soyanggang, Euiam and Cheongpyeong Dams are located consecutively. These dams are operated differently in the amount of discharge and release schedule according to their structure and purpose of use. They have different water quality characteristics depending on external pollutant inflow and internal mixing condition. Therefore, this study investigated the relationship between the upper dam and down stream river with respect to water quality indicators, such as water temperature, electrical conductivity, BOD, COD, TN and TP of the North Han River. The similarities and correlations representing the relationship were analyzed by Pearson's correlation r and t-test. The data was taken from the Ministry of Environment's water quality monitoring from 1999 to 2018. The results show that water temperature and electrical conductivity of the dam and river are similar and correlated. However, it turned out that there was no similarities and correlations in BOD, COD, TN and TP that are significantly affected by subaqueous reaction mechanism. The results of this study present the impact of the dam on the water quality of North Han River, which can be used as useful data for management of water quality.

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