Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Evaluation of Biodegradation Characteristics of Haloacetic Acids by a Biofilm in a Drinking Water Distribution System

상수관망에서 생물막에 의한 Haloacetic Acids 생물분해 특성 평가

  • 손희종 (부산광역시 상수도사업본부 수질연구소) ;
  • 김도환 (부산광역시 상수도사업본부 수질연구소) ;
  • 한영립 (동아대학교 환경공학과) ;
  • 최영익 (동아대학교 환경공학과)
  • Received : 2014.06.19
  • Accepted : 2014.09.16
  • Published : 2014.09.30
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Abstract

Haloacetic acids (HAAs) concentrations have been observed to decreased at drinking water distribution system extremities. This decrease is associated with microbiological degradation by pipe wall biofilm. The objective of this study was to evaluate HAAs degradation in a drinking water system in the presence of a biofilm and to identify the factors that influence this degradation. Degradation of monochloroacetic acid (MCAA), dichloroacetic acid (DCAA) and trichloroacetic acid (TCAA) was observed in a simulated distribution system. The results obtained showed that different parameters came into play simultaneously in the degradation of HAAs, including retention time, water temperature, biomass, and composition of organic matter. Seasonal variations had a major effect on HAAs degradation and biomass quantity (ATP concentration) was lower by 25% in the winter compared with the summer.

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References

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