Trichloro isocyanuric acid 와 Calcium hypochlorite에 의한 대장균 사멸특성 비교연구

  • 강자경 (한국외국어대학교 환경학과 생물공학 실험실) ;
  • 변대진 (성원환경주식회사) ;
  • 김응수 (한국외국어대학교 환경학과 생물공학 실험실)
  • Published : 2000.04.08

Abstract

The disinfection effects of Trichloro isocyanuric acid (TICA) and Calcium hypochlorite (Cal-hypo) against E. coli' in aqueous suspension were compared at various concentrations of disinfectants as well as exposure times. When E, coil($^{\sim}10^7$ CFU/ml) were exposed by TICA and Cal-hypo (12 ppm each), 90% of the initial cells were reduced in 4 sec and 390 sec, respectively. Although Cal-hypo lost its disinfection capability in about 1 hr under the sun light, TICA maintained its effect up to 6 hrs. This comparative studies clearly demonstrate that TICA is more effective than Cal-hypo in terms of sterilizing E. coli as well as maintaining the disinfection effects.

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