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Evaluation of the Characteristics of THM Formation by Chlorination in Extracted Humic Acid from Nakdong River  

Son, Hee-Jong (Water Quality Research Institute, Waterworks Headquater)
Roh, Jae-Soon (Water Quality Research Institute, Waterworks Headquater)
Bae, Sang-Dae (Department of Environmental Engineering, Silla University)
Choi, Young-Ik (Department of Environmental Engineering, Silla University)
Jung, Chul-Woo (Ulsan Regional Innovation Agency, Ulsan Industry Promotion Techno Park)
Publication Information
Journal of Korean Society of Environmental Engineers / v.29, no.4, 2007 , pp. 412-418 More about this Journal
Abstract
The purpose of this study was to determine the several factors for affecting chlorine disinfection by-products(DBPs) characteristics by reacting chlorine and organic matters in the aquatic phase. The results of this research yield the following specific conclusions: The concentration of trihalomethanes(THMs) was increased with increasing dissolved organic carbon(DOC), and a trend of THMs formation was parabolic with increasing organic matters. Formations of THMs increased straightly for the first 4 hours and the amounts of producted THMs for the 30 minutes were up to $25\sim43%$ in the entire experiment periods(168 hours). When keeping up the concentration of organic matters at constant and changing that of bromide, the quantity of formed THMs did not show distinguished difference with the reaction times. THMs were gradually increased at $4^{\circ}C$ even though a reaction phase was parabolic formation(PF) phase. However, THMs were increased rapidly in the instantaneous formation(IF) phase and then became slowdown in the PF phase between $20\sim35^{\circ}C$. THMs were gradually increased although entering in the PF phase at pH 5. However, THMswere increased rapidly in the IF phase and then became slowdown in the PF phase at pH 7 and pH 9, and these treads were much more clear at pH 9 than at pH 7.
Keywords
Humic Acid; Chlorination; Disinfection By-Products; Trihalomethanes; Formation Parameters;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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