한국물환경학회지 (Journal of Korean Society on Water Environment)

  • 제36권2호
  • /
  • Pages.98-108
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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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HSPF 모형을 이용한 축산계 비점오염 저감에 따른 합천댐 유역 수질 영향 분석

Estimation of Livestock Pollutant Sources Reduction Effect on Water Quality in Hapcheon Dam Watershed Using HSPF Model

  • 조현경 (경상대학교 대학원 농공학과) ;
  • 김상민 (경상대학교 지역환경기반공학과 (농업생명과학연구원))
  • Cho, Hyun Kyung (Graduate School, Gyeongsang National University) ;
  • Kim, Sang Min (Department of Agricultural Engineering (Institute of Agriculture and Life Sciences), Gyeongsang National University)
  • 투고 : 2019.09.27
  • 심사 : 2020.02.17
  • 발행 : 2020.03.30
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초록

The purpose of this study was to evaluate water quality in Hapcheon dam via using the Hydrological Simulation Program-Fortran (HSPF) model and applied livestock reduction scenarios. Hapcheon dam watershed input data for the HSPF model were established using the stream, land use, digital elevation map and meteorological data and others. The HSPF model was calibrated and validated using the observed water quality data from 2000 to 2016. For water quality simulation, we calculated the generated and discharge loads of the population, livestock, industry and land use following the guideline provided by the Ministry of Environment. The pollutant data were obtained from National Institute of Environmental Research (NIER). The monthly discharge load were estimated by applying the delivery rate. The calibration and validation results showed that the annual mean BOD had a difference of 0.22 mg/L and an error of ±13 %, T-N had a difference of 0.66 mg/L and an error of ±16 % and T-P had a difference of 0.027 mg/L and an error of ±13 %. In order to evaluate the nonpoint pollutants management effects, we applied livestock reduction scenarios because livestock consists of the largest portion of pollutants. As a result of the 20 % of livestock reduction, BOD, T-N and T-P decreased by 3 %, 1 % and 3 %, respectively. When 40 % of livestock reduction was applied, BOD, T-N and T-P decreased by 5 %, 3 % and 4 %, respectively. Based on the results of this study, effective pollutant management methods can be applied to improve the water quality and achieve the target water quality of Hapcheon dam watershed.

키워드

참고문헌

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