한국지리정보학회지 (Journal of the Korean Association of Geographic Information Studies)

  • 제23권3호
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  • Pages.174-191
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  • 2020
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  • 1226-9719(pISSN)
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  • 2287-6952(eISSN)
한국지리정보학회 (The Korean Association of Geographic Information Studies)
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서화천 유역 비점오염원 관리를 위한 부하지속곡선 적용성 연구

A Study on the Applicability of Load Duration Curve for the Management of Nonpoint Source Pollution in Seohwacheon Basin

  • 갈병석 ((주)다온솔루션) ;
  • 문현생 (국립환경확원 금강물환경연구소) ;
  • 홍선화 (국립환경확원 금강물환경연구소) ;
  • 박천동 (국립환경확원 금강물환경연구소) ;
  • 민경옥 (국립환경확원 금강물환경연구소) ;
  • 박재범 ((주)다온솔루션)
  • KAL, Byung-Seok (Daonsolution. Co., Ltd.) ;
  • MUN, Hyun-Saing (Geum River Environmental Research Center, National Institute of Environmental Research) ;
  • HONG, Seon-Hwa (Geum River Environmental Research Center, National Institute of Environmental Research) ;
  • PARK, Chun-Dong (Geum River Environmental Research Center, National Institute of Environmental Research) ;
  • MIN, Kyeong-Ok (Geum River Environmental Research Center, National Institute of Environmental Research) ;
  • PARK, Jae-Beom (Daonsolution. Co., Ltd.)
  • 투고 : 2020.08.07
  • 심사 : 2020.09.04
  • 발행 : 2020.09.30
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초록

본 연구에서는 대청호 상류에 있는 서화천 유역에서 부하지속곡선을 통한 소유역별 비점오염원 취약지역 및 관리 오염물질과 관리 시기를 분석하였다. 먼저 부하지속곡선을 만들기 위하여 장기 유출 모형인 SWAT를 구축하여 유량지속곡선(Flow Duration Curve)을 작성하였으며 그 결과에 목표 수질을 곱하여 부하지속곡선(Load Duration Curve)을 작성하였다. 목표 수질은 서화천 비점오염원 관리를 위해 지난 2017년 11월부터 측정한 모니터링 자료를 사용하였으며 측정자료의 60분위에 해당하는 값을 목표 수질로 설정하였다. 이때 산정된 값이 하천 생활환경 기준의 "약간좋음"(II)을 초과할 경우 목표 수질을 "약간 좋음"(II)으로 제한하였다. 비점오염원 취약지역은 목표 수질을 초과하는 초과율을 이용하여 선정하였으며 초과 되는 오염물질을 관리 물질로 판단하고 계절별 평가를 통해 관리시기를 선정하였다.

In this study, we analyzed the vulnerable areas of non-point source pollutants and management pollutants and management time by subwatershed curves in the Seohwacheon basin located upstream of Daecheongho. First, in order to create a load duration curve, a long-term flow model SWAT was constructed to create a flow duration curve, and the result was multiplied by the target water quality to create a load duration curve. For the target water quality, monitoring data values measured from November 2017 were used for the management of nonpoint source pollutants in Seohwacheon, and a value corresponding to 60 percentile of the measured data was set as the target water quality. At this time, the target water quality was limited to"slightly good"(II) when the calculated value exceeded"slightly good"(II) of the river living environment standard. The vulnerable areas of non-point source of pollution were selected using the excess rate exceeding the target water quality, and the excess pollutant was judged as a management substance and the management time was selected through seasonal evaluation.

키워드

참고문헌

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