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Assessment of Non-Point Source Pollutant Loads and Priority Management Areas using an HSPF Model in Sejong City, South Korea

  • Lim, Dohun (Korea Natural Environment Institute) ;
  • Lee, Yoonjin (Department of General Education, Konyang University)
  • Received : 2017.04.14
  • Accepted : 2017.07.27
  • Published : 2017.08.31

Abstract

In this study, the discharge loads of non-point pollution sources were analyzed using a Hydrologic Simulation Program-Fortran (HSPF) model for 46 sub-watersheds in order to guide the management plan for water and streams passing through the city. The results using HSPF showed good applicability in comparison to point measurements, which were based on BOD, TP, and TN. The mean value of the BOD loads was $4.08kg/km^2$ per day, and the highest level of BOD was $17.75kg/km^2$ per day at Namri. Three potential areas of high priority for the installment of constructed wetlands were selected in order to reduce non-point pollution sources based on BOD loads and on environmental and economic conditions. The results for these scenarios indicated a maximum rate of reduction in BOD of 39.12% within the proposed constructed wetlands.

Keywords

Non-point pollutant source;HSPF model;Watershed management;Constructed wetland

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