Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Water Quality Analysis in Nakdong River Tributaries Using 2012-2016 Monitoring Data

2012-2016년 모니터링 자료를 이용한 낙동강 지류·지천 수질 특성 분석

  • Son, Younggyu (Department of Environmental Engineering, Kumoh National Institute of Technology) ;
  • Na, Seungmin (Han River Basin Environmental Office, Ministry of Environment) ;
  • Im, Tae Hyo (Nakdong River Environment Research Center, National Institute of Environmental Research) ;
  • Kim, Sang-hun (Nakdong River Environment Research Center, National Institute of Environmental Research)
  • 손영규 (금오공과대학교 환경공학과) ;
  • 나승민 (환경부 한강유역환경청) ;
  • 임태효 (국립환경과학원 낙동강물환경연구소) ;
  • 김상훈 (국립환경과학원 낙동강물환경연구소)
  • Received : 2017.04.05
  • Accepted : 2017.10.25
  • Published : 2017.11.30
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Abstract

Water quality monitoring for flow rates and BOD/COD/T-N/T-P/SS/TOC concentrations has been conducted in Nakdong river tributaries since 2011. In this study concentrations and loading rates of BOD, T-P, and TOC were analyzed to evaluate water quality monitoring stations using accumulated data at 206 tributary monitoring stations in Nakdong river 2012 ~ 2016. Average concentration ranges for 206 monitoring stations were 0.3 ~ 6.4 mg/L, 0.025 ~ 1.562 mg/L, and 0.6 ~ 10.7 mg/L for BOD, T-P, and TOC, respectively. Additionally, average loading rate ranges were 0.96 ~ 46,040 kg/d, 0.087 ~ 1,834 kg/d, and 1.51 ~ 80,425 kg/d for BOD, T-P, and TOC, respectively. Average concentration for BOD, T-P, and TOC at each monitoring station was evaluated using ambient water quality standards of rivers and water quality regulation level for medium-sized management areas. Average loading rate and specific loading rate (loading rate/drainage basin area) for BOD, T-P, and TOC at each monitoring station was considered to evaluate monitoring stations using suggested classification (BOD, TOC: -1, 1 ~ 10, 10 ~ 100, 100 ~ 1,000, and 1,000 ~ kg/d; T-P: -0.1. 0.1 ~ 1, 1 ~ 10, 10 ~ 100, and 100 ~ kg/d) Using results of this study, various water quality status maps were provided, and three evaluation methods were suggested to determine priority monitoring stations in Nakdong river for rational water quality control and tributaries basin management.

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References

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