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http://dx.doi.org/10.3741/JKWRA.2011.44.10.809

Cost Reduction for Small-Scale Desalination Plants  

Park, Nam-Sik (Department of Civil Engineering, Dong-A University)
Park, Jun-Yeong (Graduate School, Dong-A University)
Mun, Yu-Ri (Samsung SDS, Sustainability Strategy Group)
Kim, Ja-Kyum (Engineering Services Department, Korea Water Resources Corporation)
Publication Information
Journal of Korea Water Resources Association / v.44, no.10, 2011 , pp. 809-817 More about this Journal
Abstract
We analyzed various cost components for approximately 40 small-scale island desalination plants operated by K-water. A significant factor affecting desalination cost was found, and we proposed a way to reduce desalination costs. All plants considered were reverse osmosis (RO) facilities. TDS concentrations of feed water varied from less than 1,000 mg/L (practically considered freshwater) to over 30,000 mg/L (nearly seawater). Analysis of desalination costs from 2005 to 2009 indicated that maintenance, labor, and energy were the three biggest components that accounted for 50.6%, 36.9% and 7.8%, respectively. It was well known that TDS of feed water directly affected energy needed for RO process. In this study we found that maintenance cost was also directly related to feed water TDS. This finding indicated that lowering feed water TDS might result in significant desalination cost reduction.
Keywords
RO desalination plants; islands; cost analysis; cost reduction;
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