Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Analysis of Water bady Damage at Osu Stream Using the Flow-Loading Equation and 8-Day Intervals Cumulative Flow Duration Curve

유량-부하량 관계식과 8일 간격 누적유량지속곡선을 이용한 오수천의 수체 손상도 분석

  • Lee, Young Sung (Yeongsan River Environment Research Center, National Institute of Environmental Research) ;
  • Kim, Young Suk (Yeongsan River Environment Research Center, National Institute of Environmental Research) ;
  • Han, Sung Wook (Yeongsan River Environment Research Center, National Institute of Environmental Research) ;
  • Seo, kwon ok (Yeongsan River Environment Research Center, National Institute of Environmental Research) ;
  • Lim, chang bok (Yeongsan River Environment Research Center, National Institute of Environmental Research) ;
  • Lee, Yeong Jae (Yeongsan River Environment Research Center, National Institute of Environmental Research) ;
  • Kim, Kyunghyun (Yeongsan River Environment Research Center, National Institute of Environmental Research) ;
  • Jung, Kang-Young (Yeongsan River Environment Research Center, National Institute of Environmental Research)
  • 이영성 (국립환경과학원 영산강물환경연구소) ;
  • 김영석 (국립환경과학원 영산강물환경연구소) ;
  • 한성욱 (국립환경과학원 영산강물환경연구소) ;
  • 서권옥 (국립환경과학원 영산강물환경연구소) ;
  • 임창복 (국립환경과학원 영산강물환경연구소) ;
  • 이영재 (국립환경과학원 영산강물환경연구소) ;
  • 김경현 (국립환경과학원 영산강물환경연구소) ;
  • 정강영 (국립환경과학원 영산강물환경연구소)
  • Received : 2018.07.23
  • Accepted : 2018.11.28
  • Published : 2018.12.31
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Abstract

The purpose of this study at water quality pollutants to propose proper management method for the Osu-A unit watershed which is the influent tributary located upstream of the Sumjin -river among the 13 unit watersheds in the Sumjin-river water system. Analyzed the correlation between flow-pollution loading and the correlation between land use type, BOD and TP items, and analyzed 8-day intervals Cumulative Flow Duration Curve (CFDC) and Load Duration Curve (LDC) to evaluate water quality damage. As a result, both BOD and TP were larger than 1 and the concentration of water pollutants increased with increasing flow. BOD was positively correlated with Urban and Field, and TP was positively correlated with Field with 0.710. As a result of the LDC, BOD was analyzed that the target water quality was achieved with the excess rate of less than 50%, and TP exceeded the target water quality by 50.1%. BOD usually exceeded the standard value (exceedance probability 50%) at low flow zone and On the other hand, TP usually exceeded the standard value at high flow zone. Monthly BOD (April to June) and TP (May to August) exceeded the standard. Sewage Wastewater treatment and non-point pollution control is Osu-A unit watersheds are effective in improving BOD and TP.

Keywords

References

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