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KMID : 1024520070160040505
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Journal of the Environmental Sciences
2007 Volume.16 No. 4 p.505 ~ p.521
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Environmental Restoration and Water Quality Management Modeling of Coastal Area by Reuse of Treated Wastewater
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Lee Dae-In
Yoon Yang-Ho
Park Il-Heum
Lee Gyu-Hyong
Cho Hyeon-Seo
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Abstract
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This study estimated response of water duality and pollutant behavior according to the discharge and reuse of treated wastewater by three-dimensional eco-hydrodynamic model, and suggest plan that water quality management and environmental restoration in the coastal area including urban stream of Yeosu, Korea. Dispersions of low-saline water and COD by treated wastewater loads (design facility capacity, about ) were very limited in near of effluent site. Nutrients, however, increase compared to the other water quality factors, especially total nitrogen was very sensitive to input loads. When reuse some of treated wastewater to Yeondeung stream, nitrogen was big influence on estuarine water quality. Although current characteristics of treated wastewater such as discharge and water quality were negligible to the change of marine environment, effluent concentration of COD, TN and TP, especially 40% of TN, are reduced within the allowable pollutant loads for satisfy environmental capacity and recommended water duality criteria. Also, controls of input point/non-point sources to Yeondeung stream and base concentration of pollutants in coastal sea itself are very necessary.
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KEYWORD
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Treated wastewater, Eco-hydrodynamic model, Water quality management, Environmental restoration, Coastal area of Yeosu, Yeondeung stream
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