HAAs Formation by Chlorine Dose and Reaction Time and The Removal Effect of Precursors by The Advanced Oxidation Processes

염소주입량과 반응시간에 따른 HAAs 생성과 고도산화처리에 의한 전구물질 제거 영향

  • Kim, Kyoung-Suk (Department of Environmental Engineering, Yonsei University) ;
  • Oh, Byung-Soo (Department of Environmental Engineering, Yonsei University) ;
  • Ju, Seul (Department of Environmental Engineering, Yonsei University) ;
  • Kang, Joon-Wun (Department of Environmental Engineering, Yonsei University)
  • 김경숙 (연세대학교 환경공학과) ;
  • 오병수 (연세대학교 환경공학과) ;
  • 주설 (연세대학교 환경공학과) ;
  • 강준원 (연세대학교 환경공학과)
  • Published : 2004.03.30

Abstract

This study investigated the effect of chlorine dose and chlorine reaction time for the formation of haloacetic acids (HAAs). According to the results, HAA formation was highly affected by chlorine dose and chlorine reaction time. HAA formation reached a plateau value at 30 mg/L of chlorine dose and 24 hr of chlorine reaction time. For the speciation of formed HAAs in the test water, the concentration of brominated-HAAs was significantly lower than that of chlorinated-HAAs because of low level of bromide ion concentration in the test water. It also investigated the removal efficiency of HAA precursors by several unit processes, such as ozone alone, UV alone, and combined ozone/UV system. Of them, ozone/UV system was proved as the best process to control the HAAs formation. The increase of the brominated-HAAs was observed during ozonation with and without UV irradiation showing the slight increase of total HAA concentrations.

Keywords

References

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