Journal of the Korean Society of Hazard Mitigation (한국방재학회 논문집)

Korean Society of Hazard Mitigation (한국방재학회)
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Long-term Monitoring and Analysis for Discharge Characteristics of Nonpoint Source Pollution by Land Use Types in Geum River Basin

금강유역 토지이용별 비점오염원 유출 특성 장기 모니터링 분석

  • Lee, Jung Ho (Dept. of Civil & Environmental Engineering, Hanbat National University) ;
  • Park, Suyoung (Geum River Environment Research Center, National Institute of Environmental Research) ;
  • Kim, Dongho (Geum River Environment Research Center, National Institute of Environmental Research) ;
  • Lee, Young Joon (Geum River Environment Research Center, National Institute of Environmental Research) ;
  • Park, Moo Jong (Department of Civil Engineering, Hanseo University)
  • 이정호 (국립한밭대학교 건설환경공학과) ;
  • 박수영 (국립환경과학원 금강물환경연구소) ;
  • 김동호 (국립환경과학원 금강물환경연구소) ;
  • 이영준 (국립환경과학원 금강물환경연구소) ;
  • 박무종 (한서대학교 토목공학과)
  • Received : 2012.11.27
  • Accepted : 2012.12.10
  • Published : 2012.12.31
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Abstract

The aims of this study are the characterization of discharge from nonpoint source, the analysis of the pollutant loads and an establishment of a management plan for nonpoint source of Geum river basin. For this purpose, 6 monitoring points was selected to the investigated. During the period from March 20 to September 29 in 2011, the water automatic sampler system has been installed in each monitoring points and parameters such as $BOD_5$, $COD_{Mn}$, SS, TN and TP were analyzed. The nonpoint source pollutants seem to be washed out along the stream water in the beginning of rainfall, remain in water and cause the stream pollution. The runoff during heavy rainfall, especially, much higher concentration of SS than those during dry period. Therefore the basic data were build up to estimate the basin unit of nonpoint source according to land use in Geum river basin.

본 연구의 목적은 금강유역에서의 비점오염원 유출 특성을 분석하고 이에 따른 비점오염원 관리 대책 수립의 기초자료를 제공하는 것에 있다. 이를 위하여 본 연구에서는 금강유역의 총 6개 지점을 모니터링 지점으로 선정하였으며, 2011년 3월 20일부터 9월 29일까지 장기간에 걸치 모니터링 관측을 수행하였다. 각 모니터링 지점에서는 자동 채수기 및 강우기록계를 통한 관측이 이루어졌으며, 관측 수질 항목 $BOD_5$, $COD_{Mn}$, SS, TN 및 TP에 대한 데이터 수집 및 분석이 이루어졌다. 분석 결과 비점오염물질은 강우 초기 유출을 통하여 쓸려 내려오며, 강우의 크기가 클수록 그 농도가 증가하는 것을 알수 있으며, 특히 SS의 농도가 상대적으로 크게 나타남을 알수 있었다. 따라서 본 연구에서는 이러한 장기간의 비점오염물질 관측 결과를 바탕으로 향후 금강유역에서의 토지이용에 따른 비점오염물질 원단위 산정을 위한 기초자료를 축적하였다.

Keywords

Acknowledgement

Grant : 주요 비점오염원 유출 장기모니터링

Supported by : 국립환경과학원 금강물환경연구소

References

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