도시과학 (Journal of Urban Science)

인천대학교 도시과학연구원 (Urban Science Institute)
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Evaluation of Pollutant loads at Inflow Streams under Ara Waterway Basin

  • Han, Sangyun (Department of Environmental Engineering, Incheon National University) ;
  • Jung, Jongtai (Department of Environmental Engineering, Incheon National University)
  • 투고 : 2021.05.13
  • 심사 : 2021.06.30
  • 발행 : 2021.06.30
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초록

In this study, to evaluate the characteristics of the pollution in the major inflow tributaries and major environmental facilities in the watershed of Ara waterway, An inflow flow rate measurement and water quality analysis were conducted during dry and rainy seasons. In addition, the flow rate measurement, water quality analysis, and pollutant load at each monitoring point were compared and evaluated. Influx of BOD5, T-P and T-N into the tributaries of the ARA waterway watershed, excluding the Gulpo river watershed, during dry season were only 0.007%, 0.005% and 0.004% respectively of the incoming loads in the entire ARA waterway basin. In addition, it was confirmed that the discharge pollutant loads during rainfall event was about 440 times more for BOD5, about 545 times on T-P, and about 23 times on T-N in comparison to the pollutant loads during the dry days. When the Gulhyeon rubber dam was deflated, the discharged pollutant load during a rainfall was higher than the estimated load at the G7 monitoring point because the deposited pollutants from the upstream riverbed flowed down. Therefore, during a rainy season, it is necessary to manage the influx of high-load water pollutants from the overflow and deflation of the Gulhyun rubber dam as well as to find a strategy to reduce the pollutant loads in the Gulpo river watershed.

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참고문헌

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