Occurrence and Distribution of Disinfection of By-Products in Drinking Water

수돗물중 소독부산물(DBPs)의 생성 및 분포특성에 관한 연구

  • In, C.K. (Department of Water Quality Preservation Analysis, Institute of Health and Environment) ;
  • Lee, J.H. (Department of Water Quality Preservation Analysis, Institute of Health and Environment) ;
  • Lee, I.S. (Dept. Environmental Life, Engineering Daejeon University) ;
  • Bang, E.O. (Dept. Environmental Life, Engineering Daejeon University) ;
  • Song, H.S. (Dept. Environmental Life, Engineering Daejeon University) ;
  • Yoon, S.J. (Dept. Environmental Life, Engineering Daejeon University)
  • 인치경 (충청남도보건환경연구원 수질보전검사과) ;
  • 이중호 (충청남도보건환경연구원 수질보전검사과) ;
  • 이인숙 (대전대학교 환경생명공학과) ;
  • 방은옥 (대전대학교 환경생명공학과) ;
  • 송현실 (대전대학교 환경생명공학과) ;
  • 윤선진 (대전대학교 환경생명공학과)
  • Published : 2005.06.03

Abstract

Chlorine disinfection has been used in drinking water supply to disinfect the water-borne microbial disease which may cause to serious human disease. it is still the least costly, relatively easy to use, Chlorination is the primary means to disinfect portable water supplies and control bacterial growth in the distribution system. However, chlorine reacts with natural organic matter(NOM), that presents in nearly all water sources, and then produces disinfection by-products(DBPs), that have adverse health effects. Although the existent DBPs have been reported in drinking water supplies, it is not feasible to predict the levels of the various DBPs due to the complex chemistry reaction involved. 1. The objectives of this study is to investigate seasonal variation difference concentration of DBPs in the plant to tap water. The average concentration of THMs was 20.04 ${\mu}g/{\ell}$ , HAAs 8-15 ${\mu}g/{\ell}$ , HANs 2-4.5 ${\mu}g/{\ell}$ respectively. 2. Distant variation of DBPs furmation by the distance is that THMs concentration increased by 17% at 2km point from the plant and by 28% at 7km and HAAs, HANs also increase each by 16%, 32% at 2 km from the plant and 35%, 56% at 7 km. DBPs increase in water supply pipe continually, 3. The seasonal occurrence of BBPs is that in May and August DBPs concentration is very higher than in march, in May DBPs concentration is highest. The temperature is main factor of DBPs formation, precursor also. 4. Precursor which was accumulated for winter flowed into the raw water by flooding in spring and summer and produced DBPs. 5. Therefore for the supply of secure drinking water, it is required to protect precursor of flowing into raw water and to add to BCAA and DBAA to drinking water standards.

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