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KMID : 0382420010270010044
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Korean Journal of Environmental Health Society
2001 Volume.27 No. 1 p.44 ~ p.50
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A Study on Water Quality and THMs Formation in Lake-Waters at Kunsan
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Hwang Gab-Soo
Kim Kang-Joo
Lee Young-Nam
Yoe Seong-Koo
Kim Jin-Sam
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Abstract
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This study was carried out to investigate characteristics of water quality and THMs formation in lake-waters at Kunsan. Of the parameters examined for water quality, pH, alkalinity, SO_4^2- and Cl^- reflected the characteristics according to the origin, geography and water source of lakes while COD, SS, T-P, T-N and chlorophyll-a correlatively reflected well the influence of pollution factors around lakes. The result of water quality analysis showed that most lakes in Kunsan area have the severe eutrophication problem, especially in summer. In lake-waters, THMFP overally continued to increase until 48 hour with the reaction time and THMs formation was largely achieved within 24 hour of the reaction time. The average formation ratio were 68.2% for CHCl₃, 23.6% for CHCl₂Br, 7.6% for CHClBr₃ and 0.6% for CHBr₃, respectively and much difference depending on the reaction time was not shown. Overally, 96h-THMFP levels in lakes were high during June~September and showed higher tendency in lakes where could be regarded more contaminated on the whole. These results suggest that THMFP may be available for the management of lake-water quality as one of the useful parameters for the general evaluation of contamination. 96h-THMFP failed to show the strong correlation individually with pH, TOC, COD and chlorophyll-a.
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