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Effect of Artificial Aeration System on Water Quality of Yeoncho Lake  

Seo, Dong-Il (충남대학교 환경공학과)
Hwang, Hyun-Dong ((주)엠큐빅)
Lee, Eun-Hyoung ((주)엠큐빅)
Heo, Woo-Myung (삼척대학교 환경공학과)
Publication Information
Journal of Korean Society of Water and Wastewater / v.18, no.3, 2004 , pp. 357-365 More about this Journal
Abstract
Effect of artificial circulation on amelioration of water quality in Yeoncho Lake was analyzed using summer data between 1991-2002. Two sites, intake tower area where aeration systems are concentrated in and near the inlet of reservoir were selected for comparison in this study. Summer averages between may and september Showed that aeration system might be beneficial in the improvement of water quality of BOD5, COD, and TN while Chl-a concentration and transparency did show opposite pattems. Wilcoxon's singed rank test for matched pair indicated slight increase of BOD5 and COD concentrations in the vicinity of intake tower while other variables did not show any significant differences from data of inlet of reservoir. During the study, it was found that the following subjects need to be investigated for more detailed analysis. 1) Dynamic pollutant loading from outside and inside the lake, 2) Biological, Chemical and Physical lake data when aeration systems are in and not in operation and 3) Radius of influence of aeration system.
Keywords
Yeoncho Reservoir; Artificial circulation; Destratification; Algal bloom; Wilcoxon`s signed rank test for matched pair;
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