5. Disinfection is to be added to a WWTP with an average daily flow of 10 MGD and an hourly peaking factor of 2.5. If the chlorine demand is 7

mg/L (as Cl2) and the required total chlorine residual is 5 mg/L, (a) size the chlorinator in lb/hr, and (b) determine the monthly chlorine usage in ton (modified from the FE sample exam).