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http://dx.doi.org/10.3741/JKWRA.2013.46.11.1069

Analysis of the Water Quality Change Due to Water Level Control of Sayeon Dam  

Lee, Sang Hyeon (Ulsan Development Institute Environment & Safety Division)
Cho, Hong Je (Department of Civil & Environmental Engrg., Ulsan Univ.)
Publication Information
Journal of Korea Water Resources Association / v.46, no.11, 2013 , pp. 1069-1078 More about this Journal
Abstract
The Bangudae Petroglyphs, national treasure No. 285 is located within submerged upper districts of Sayeon dam supplying the main residential water in Ulsan. Of the many ways for the reservation of Petroglyphs located the altitude at 53~57 m, the plan that we take it out of the water lowering the water level from 60 m to 52 m has been examined mainly in case of controlling artificially the water level of the dam. In this paper, we examined expected problems from the loss of dam function and the change of water quality from water deterioration caused by the water level control of the Sayeon dam. Using the model of Vollenweider and CSTR (Continuous Stirred Tank Reactor), we analyzed the density change of BOD and COD, representative water quality index and the TP and TN, the main reason of algae growth. The result showed that the density of COD lowered a little but the density of TP and TN went up over 130% when controlling the water level from 60 m to 52 m. These changes cause a serious algae problem and if doing the water quality management as the density of TN and TP, the water quality would become worse. Water storage and supply residential water decreases, and the water quality becomes worse because of eutrophic state.
Keywords
Sayeon dam; water level; water quality change; nutritive salts (TN, TP);
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Times Cited By KSCI : 3  (Citation Analysis)
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