Chlorine disinfection studies have been conducted on a treated wastewater. For the results given below: a) Determine the bacterial decay coefficient k and the dilution constant n for each initial dosage; b) Determine the contact time necessary to attain a 99% kill at the three chlorine dosage.
Chlorine Dosage, Percent Survival at Specified Contact Time
mg/l 1min 2 min 4 min 8 min 16 min
50 94 80 43 20 8
80 60 35 30 10 2
100 82 41 15 2.8 0.5
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