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Chlorine is used as disinfectant in a municipal water treatment plant. It acheives 60% percent of disinfection efficiency measured in terms of killing the indicator microorganisms.(E-Coli) in 4 minutes. The minimum time required to acheive 99.9% disinfection efficiency would be____hrs0.5 |
Answer» Chlorine is used as disinfectant in a municipal water treatment plant. It acheives 60% percent of disinfection efficiency measured in terms of killing the indicator microorganisms.(E-Coli) in 4 minutes. The minimum time required to acheive 99.9% disinfection efficiency would be____hrs
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