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Assessment of Pollutant Loads in the Dongjin River

동진강 유역의 오염부하량 평가

  • Lee, Kyeong-Bo (Honam Agricultural Research Institute, NICS RDA) ;
  • Kim, Jong-Cheon (Jeonbuk Institute of Health and Environmental Research) ;
  • Kim, Jong-Gu (Honam Agricultural Research Institute, NICS RDA) ;
  • Lee, Deog-Bae (National Institute of Agricultural Science Technology, RDA) ;
  • Park, Chan-Won (Honam Agricultural Research Institute, NICS RDA) ;
  • Kim, Jae-Duk (Honam Agricultural Research Institute, NICS RDA)
  • 이경보 (작물과학원 호남농업연구소) ;
  • 김종천 (전라북도 보건환경연구원) ;
  • 김종구 (작물과학원 호남농업연구소) ;
  • 이덕배 (농업과학기술원) ;
  • 박찬원 (작물과학원 호남농업연구소) ;
  • 김재덕 (작물과학원 호남농업연구소)
  • Published : 2005.06.30

Abstract

This study was conducted to evaluate the influence of pollutant loads on the water quality in the Dongjin River area from January 2003 to December 2004. The average value of BOD and T-N showed the highest peak in Yongho, Dukcheon watershed among Dongjin River. Concentrations of BOD, T-N and T-P in Jeongeup watershed were 2.29 mg $L^{-1}$, 4.40 mg $L^{-1}$ and 0.27 mg $L^{-1}$, respectively. Concentration of BOD in Chilbo was 1.19 mg $L^{-1}$ which would be in the grade I according to water quality criteria by Ministry of Environment. The BOD level in Wonpeung and Sinpeung watershed ranged from 4.06 to 7.35 mg $L^{-1}$. The T-N effluent loads of non-point pollutants were high in Wonpeung, Gobu, Yongho Dukcheon, Jeongeup and Sinpeung watershed in order. The major sources of BOD, T-N and T-P effluent loads were Livestock. The T-P effluent load of non-point pollutant was 68 kg $day^{-1}$ in Wonpeung, 58 kg $day^{-1}$ in Yongho Dukcheon and 45 kg $day^{-1}$ Jeongeup watershed. The delivered loads of BOD was high in Gobucheon, while both T-N and T-P were high in Yongho Dukcheon. The delivery ratio of BOD and T-N at dry season was below 100% in all watershed of Dongjin River. The delivery ratio of T-N at raining season was high in Yongho Dukcheon and Chilbo watershed

Keywords

Dongjin River;Water quality;Pollutant loads

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  2. Long-Term Ecological Health Assessment of a Restored Urban Stream Based on Chemical Water Quality, Physical Habitat Conditions and Biological Integrity vol.11, pp.1, 2019, https://doi.org/10.3390/w11010114