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Effects of Ocean Outfall for Elimination of the Anoxic Layer in Youngsan River Estuary  

Kwon, Seok-Jae (Division of Civil, Urban & Geosystem Engineering, Seoul National University)
Cho, Yang-Ki (Faculty of Earth Systems and Environmental Science, Chonnam National University)
Seo, Uk-Won (Division of Civil, Urban & Geosystem Engineering, Seoul National University)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.17, no.4, 2005 , pp. 259-268 More about this Journal
Abstract
There has been a growing interest in the elimination of anoxic layer in the Youngsan River Estuarybecause the anoxic water mass caused mainly by the inflow of fresh water from the sea wall might cause the mass reduction of benthos during summer. An ocean outfall system to discharge treated wastewater into sea water may be used as one of the effective and economical ways to eliminate the anoxic layer. The suitable ocean outfall design is generally proposed for the prediction of the buoyant jet behavior in the near field. The parameters including CTD and current data are taken into account f3r more reliable buoyant jet behavior calculation. One of the numerical models, CORMIX 1, approved by EPA is used herein for the prediction of the trajectorial variation of the cross-sectional salinity and DO concentration distribution on the calculated buoyant jet boundary according to the tidal periods. On the basis of the results, it is suggested that the single port outfall is a useful system to eliminate the anoxic layer. Proper strategies are also proposed for achieving desirable ambient conditions.
Keywords
anoxic layer; Youngsan River Estuary; ocean outfall; CORMIX 1; DO;
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