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A Study on Selection Method of Management Watershed for Total Pollution Load Control at Tributary

지류총량관리를 위한 관리유역 선정 방법에 관한 연구

  • Hwang, Ha Sun (Water Pollution Cap System Division, National Institute of Environmental Research) ;
  • Lee, Sung Jun (Water Pollution Cap System Division, National Institute of Environmental Research) ;
  • Ryu, Jichul (Water Pollution Cap System Division, National Institute of Environmental Research) ;
  • Park, Ji Hyung (Water Pollution Cap System Division, National Institute of Environmental Research) ;
  • Kim, Yong Seok (Water Pollution Cap System Division, National Institute of Environmental Research) ;
  • Ahn, Ki Hong (Water Pollution Cap System Division, National Institute of Environmental Research)
  • 황하선 (국립환경과학원 물환경연구부) ;
  • 이성준 (국립환경과학원 물환경연구부) ;
  • 류지철 (국립환경과학원 물환경연구부) ;
  • 박지형 (국립환경과학원 물환경연구부) ;
  • 김용석 (국립환경과학원 물환경연구부) ;
  • 안기홍 (국립환경과학원 물환경연구부)
  • Received : 2016.06.29
  • Accepted : 2016.11.07
  • Published : 2016.11.30

Abstract

The purpose of Total Pollution Load Control at Tributary is to obtain maximum improvement effect of water quality through finding the most impaired section of water-body and establishing the proper control measure of pollutant load. This study was implemented to determine the optimal management of reach, period, condition, watershed, and pollution source and propose appropriate reduction practices using the Load duration curve (LDC) and field monitoring data. With the data of measurement, LDC analysis shows that the most impaired condition is reach V (G4~G5), E group (flow exceedance percentile 90~100%) and winter season. For this reason, winter season and low flow condition should be preferentially considered to restore water quality. The result of pollution analysis for the priority reach and period shows that agricultural nonpoint source loads from onion and garlic culture are most polluting. Therefore, it is concluded that agricultural reuse of surface effluent (storm-water runoff with non-point sources) and low impact farming that includes reducing fertilization and controlling the height of drainage outlet are efficient water quality management for this study watershed.

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