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A treatment plant with a 70,000 gal. disinfection tank uses chlorine (Cl2) with 20 min. contact time A. Assuming a chlorine dosage of 4 mg/L,

A treatment plant with a 70,000 gal. disinfection tank uses chlorine (Cl2) with 20 min. contact time

A. Assuming a chlorine dosage of 4 mg/L, estimate daily chemical requirement (1b/day)

B. Briefly explain why the plant operator maintains acidic conditions in the disinfection tank

C. State two (2) advantages and two (2) disadvantages of using chlorine gas as a disinfectant

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