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http://dx.doi.org/10.4491/KSEE.2011.33.12.893

A Study on Characterization of THMs Formation in Tap Water in Daegu  

Bae, Gi-Soo (Water Quality Research Institute, Waterworks Headquater)
Baek, Yoon-Kyung (Water Quality Research Institute, Waterworks Headquater)
Ryu, Ki-Sung (Water Quality Research Institute, Waterworks Headquater)
Shin, Sang-Hee (Water Quality Research Institute, Waterworks Headquater)
Lee, Chan-Hyung (Water Quality Research Institute, Waterworks Headquater)
Publication Information
Journal of Korean Society of Environmental Engineers / v.33, no.12, 2011 , pp. 893-899 More about this Journal
Abstract
The occurrence of THMs, the characteristics of THMs formation and removal of THMs were investigated. The treatment train of M plant consists of prechlorination, flocculation, sedimentation, filtration, ozonation, activated carbon and postchlorination. The study of THM formation indicated that about 92% of the THMs were formed in the flocculation/sedimentation/filtration process which affected by prechlorination. The formation of THMs was highly correlated to $KMnO_4$ consumption and water temperature in raw water. The regression model had showed 0.72~0.80 of determination coefficient so it could be used to predict the amount of THMs formation in finished water. Compared to the prechlorination process, the THMs formation was reduced in interchlorination process. With the addition of PAC, fewer THMs were formed in PAC-chlorination process than in chlorination-PAC process. Our results showed that air stripping could be used to remove the existing THMs.
Keywords
Trihalomethane; Interchlorination; Formation Potential; Correlation;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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