• Title/Summary/Keyword: 소독 효과

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Inactivation Effect of Cryptosporidium by Ozone and UV (Ozone과 UV를 이용한 Cryptosporidium의 불활성화 효과)

  • Kim, Yun-Hee;Lee, Chul-Hee;Lee, Shun-Hwa
    • Journal of Korean Society of Environmental Engineers
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    • v.29 no.1
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    • pp.31-39
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    • 2007

  • The objective of this study was to investigate the inactivation characteristics of Cryptosporidium oocysts by ozone and UV and to suggest the better, disinfection method. The inactivation CT value of 1 log(90%) and 2 log(99%) in of one disinfection, which is an index of disinfection for inactivation effect by ozone, were respectively 5.77 $mg{\cdot}min/L$ and 21.30 $mg{\cdot}min/L$. The inactivation in UV disinfection was not affected by pHs(5, 7 and 9), low turbidity(5 and below NTU) and UV intensity(0.2 and 0.6 $mWs/cm^2$) but obviously decreased at high turbidity over 20 NTU. Therefore UV disinfection capacity can be obtained when a good turbidity removal in drinking water treatment process is achieved. And if oocysts is exposed by high UV over 0.6 mWs/cm2 during enough time, the better inactivation effect will be obtained.

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