In a pretreatment, industrial wastewater is coagulated with a dosage of 30mmg/l of aluminum sulfate as alum and an equivalent dosage of lime to neutralize the hydrogen ions produced in the hydrolysis...

In a pretreatment, industrial wastewater is coagulated with a dosage of 30mmg/l of aluminum

sulfate as alum and an equivalent dosage of lime to neutralize the hydrogen ions produced in the hydrolysis of aluminum. Calculate

(a) how many pounds of alum are needed per MG of processed water treated?

(b) How many pounds of A_l
(OH)3sludge are produced per MG of water treated?