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A coagulation treatment plant with a flow of 0.5 m3/s is dosing alum at 20 mg/l....

A coagulation treatment plant with a flow of 0.5 m3/s is dosing alum at 20 mg/l.
Concentration of suspended solid is 25 mg/l. The effluent suspended solid
concentration is 12 mg/l. The sludge content is 1 % and specific gravity of sludge
is 3 %. What volume of sludge must be disposed of each day?

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