Problem 1: An operator is about to treat a 1.09MG storage tank with 350# of calcium hypochlorite that is 65% available chlorine by weight. What will the dosage be in ppm?
Problem 2: A treatment plant is using a sodium hypochlorite solution that contains 11% chlorine by weight. With a flow rate of 15MGD and a dosage of 6.5ppm what will the sodium hypochlorite dosage be in #/day?
Problem 3: A storage tank is to be disinfected with 50mg/L of chlorine. If the tank holds 85,000 gallons, how many pounds of 65% strength calcium hypochlorite is needed?
Problem 4: A 54' diameter reservoir that stands 30 feet tall is being treated with sodium hypochlorite that is 15% available chlorine by weight. The reservoir is two thirds full. How many pounds of solution is required to produce a 55 mg/L dosage?
Problem 5: One hundred pounds of 65% calcium hypochlorite is being dumped into a storage tank. The tank is 20 feet long, 40 feet wide, and 25 feet deep. What will the residual be in ppm?
Problem 6: A rectangular conduit is to be treated with a solution of sodium hypochlorite that is 15% available chlorine by weight. The conduit is 4 feet deept, 3.5 feet wide, and 6 miles long. A residual of 45ppm is required. How many gallons of sodium hypochlorite will be needed? (Assume that the solution weights 8.34#/gal)
Problem 7: Your treatment plant disinfects its water with a 15% strength sodium hypochlorite solution through a piston meter pump. The desired residual is 2.5mg/L. The demand is 1.95mg/L. The flow through the plant is 25CFS. What is the output of the pump in gallons per hour? (Assume that the solution weighs 8.34#/gal)