전기분해 방식에 의한 혼합산화제 소독 특성 평가

Evaluation of Disinfection Characteristics for Mixed Oxidants Produced by Electro-chemical Method

  • 이경혁 (한국수자원공사 수자원연구원 국제상하수도연구소) ;
  • 임재림 (한국수자원공사 수자원연구원 국제상하수도연구소) ;
  • 이두진 (한국수자원공사 수자원연구원 국제상하수도연구소) ;
  • 김성수 (한국수자원공사 수자원연구원 국제상하수도연구소) ;
  • 안효원 (한국수자원공사 수자원연구원 국제상하수도연구소)
  • 투고 : 2005.07.19
  • 심사 : 2005.10.06
  • 발행 : 2005.10.15

초록

Disinfection characteristics of mixed oxidants produced by mean of electro-chemical method were evaluated. Inactivation rate of B. subtilis spore on the mixed oxidants were similar with that of chlorine. Based on the experimental results, activation energy of mixed oxidants and chlorine with B. subtilis spore at pH 8.3 were calculated as 30.8, $34.7kJ{\cdot}mol^{-1}$ respectively. UV absorption spectrum of both chlorine and mixed oxidants present similar. Molar extinction coefficients of chlorine and mixed oxidants at 292nm, which is maximum absorption wavelength of $OCl^-$ were 357, $377M^{-1}cm^{-1}$, respectively. Disinfectant decay rate and formation rate of THM in the S WTP filtrate also shows insignificant difference for both mixed oxidants and chlorine. In consequent, it was confirmed that high portion of chlorine presents in the mixed oxidants.

키워드

과제정보

연구 과제번호 : 고품질 수돗물공급을 위한 관망 시스템 최적관리 기술개발

연구 과제 주관 기관 : 수처리 선진화사업단

참고문헌

  1. 이경혁, 채선하, 임재림, 최재헌, 안효원 (2004) 정수처리를 위한 Bacillus subtilis Spore의 자외선 소독 특성 평가. 대한환경공학회지. 26(12), pp.1389-1394
  2. 정승우, 최희철, 강준원, 김종배, 최승일 (1993) 이산화염소에의한 페놀 제거 및 살균. 대한상하수도학회지, 6(2), pp.24-33
  3. 홍지혜, 손진식 (2004) 활성슬러지공정과 고도처리공정에 따른하수처리수의 소독부산물생성에 관한연구. 대한환경공학회지, 26(12), pp.1380-1384
  4. Cho, M., Chung, H.M., and Yoon, J.Y. (2003) Quantitative Evaluation of the Synergistic Sequential Inactivation of Bacillus subtilis Spores with Ozone Followed by Chlorine, Appl. Environ. Microbiol., 37(10), pp. 2134-1526
  5. Mohaed S. Siddiqui (1996) Chlorine-Ozone Interactions: Formation of Chlorate, Water Research. 30(9), pp. 2160-2170 https://doi.org/10.1016/0043-1354(96)00071-1
  6. Son, HJ., Cho, M., Kim, J.E., Oh, B.T., Chung, H.M., Yoon, J.Y. (2005) Enhanced disinfection efficiency of mechanically mixed oxidants with free chlorine, Water Research, 39(4), pp. 721-727 https://doi.org/10.1016/j.watres.2004.10.018
  7. Urs von Gunten (2003) Ozonation of Drinking water: Part II. Disinfection and By-product Formation in Presence of Bromide, Iodide or Chlorine. Water Research, 37(7), pp. 1469-1487 https://doi.org/10.1016/S0043-1354(02)00458-X
  8. U.S. EPA (2003) Ultraviolet Disinfection Guidance Manual, EPA 815-D-03-007, pp 335-340
  9. AWWA Research Foundation and American Water Works Association (1996) Characterization and Modeling of Chlorine Decay in Distribution Systems, AWWARF, pp. 179-190