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A Study on the Discharge Characteristics of Pollutant Loads in Small Watershed According to the Probability Rainfall

확률 강우에 따른 홍수 전후의 소유역 오염부하량 배출특성 연구

  • 김필식 (건국대학교 생명환경과학대학 사회환경시스템공학과) ;
  • 김선주 (건국대학교 생명환경과학대학 사회환경시스템공학과) ;
  • 심재훈 (건국대학교 생명환경과학대학 사회환경시스템공학과)
  • Received : 2010.09.17
  • Accepted : 2010.11.09
  • Published : 2010.11.30

Abstract

The objective of this paper is to study the discharge characteristics of pollutant loads in small watershed according to probability rainfall using the Hydrologic Simulation Program-Fortran (WinHSPF). The subwatershed of Gosam reservoir watershed in Gyeonggido province was simulated and the probability rainfall of study area was estimated by recurrence interval and duration. The probability rainfalls are 156.5, 205.9 and 277.4 mm for 6 hrs, 12 hrs and 24 hrs in 10 year frequency, and each probability rainfalls is distributed by Huff's 4th quantiles method and applied to HSPF. The pollutant loads were high for initial rainfall. The concentrations of TN, TP and BOD were high as rainfall duration is shorter and rainfall intensity is higher.

Keywords

References

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