How much calcium bicarbonate kgday will need to be added, Ask an Expert

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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 x 18H20 is added per week to treat water with coagulation/flocculation in a water treatment plant with capacity of 1 million gallons daily.

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

Al^3+ + HCO3- --> Al(OH)3 + CO2

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