A Study on Formation Pattern of DBPs by Disinfection of Drinking Raw Water

음용 원수의 염소소독에 의한 소독부산물 생성패턴에 관한 연구

  • Lee, Kang Jin (Woongjin coway CO. LTD.) ;
  • Hong, Jee Eun (Bioanalysis & Biotransformation Research Center, Korea Institute Science & Technology) ;
  • Pyo, Heesoo (Bioanalysis & Biotransformation Research Center, Korea Institute Science & Technology) ;
  • Park, Song-Ja (Bioanalysis & Biotransformation Research Center, Korea Institute Science & Technology) ;
  • Yoo, Je Kang (Woongjin coway CO. LTD.) ;
  • Lee, Dae Woon (Department of Chemistry, Yonsei University)
  • 이강진 (웅진코웨이(주) 수질분석센터) ;
  • 홍지은 (한국과학기술연구원, 생체대사연구센터) ;
  • 표희수 (한국과학기술연구원, 생체대사연구센터) ;
  • 박송자 (한국과학기술연구원, 생체대사연구센터) ;
  • 유제강 (웅진코웨이(주) 수질분석센터) ;
  • 이대운 (연세대학교 화학과)
  • Received : 2003.04.17
  • Accepted : 2003.05.14
  • Published : 2003.06.25

Abstract

The disinfection of drinking water to control microbial contaminants results in the formation of secondary chemical contaminants, DBPs (disinfection by-products). It was studied the formation pattern of DBPs in drinking raw water after hypochlorite, chlorine disinfectant, was added in this study. It was determined TOC (total organic carbon), residual chlorine, turbidity and DBPs in raw water from Han-river during 1~14 days. Total DBPs was $101.3ng/m{\ell}$ (789.6 nM) after 7days and THMs (trihalomethanes) are the dominant portion of 69%. HAAs (haloacetic acids) and chloral hydrate were determined 19% and 10% respectively, and HANs (haloacetonitriles), HKs (haloketones) and chloropicrin were analyzed in trace level. Chloroform occupied about 89% in total THMs in concentration of $61.5ng/m{\ell}$, 95% of HANs was DCAN (dichloroacetonitrile) in $0.72ng/m{\ell}$, 50% of HAAs was TCAA (trichloroacetic acid). On the study of relationship in formation among the DBPs, HANs forms with THMs competitively to the point of the concentration of $40ng/m{\ell}$ of THMs. For HAAs, it did not show the prominent tendency. But it was observed that the compounds of large oxidation state are formed at first, and becomes to the compounds of low oxidation states.

Keywords

chlorinated disinfection byproducts;THMs;HAAs;HANs

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