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How much calcium bicarbonate (kg/day) will need to be added per day in water with alkalinity...

How much calcium bicarbonate (kg/day) will need to be added per day in water with alkalinity of 30 mg/L CaCO3 (assume for simplicity only bicarbonate alkalinity is present) if 794 kg of Al2(SO4)3 x18H2O is added per week to treat water with coagulation/flocculation in a water treatment plant with capacity of 1 MGD.

Consider the following coagulation/flocculation (unbalanced) reactions occur:

Al3+ + HCO3– → Al(OH)3 + CO2

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