Determine the amount of aluminum chloride (AlCl3)required to precipitate phosphorus from untreated wastewater with the c

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Determine the amount of aluminum chloride (AlCl3)required to precipitate phosphorus from untreated wastewater with the characteristics given below. Also, determine (2) the required aluminum chloride storage capacity if a 30 d supply is to be stored at the treatment facility, and (3) the added quantity of sludge (in both dry mass and wet sludge volume) generated from the aluminum chloride addition.
Wastewater flow (m3/d), 4500 Wastewater TSS (mg/L), 220
TSS removal without iron addition (%), 60 TSS removal with iron addition (%), 75;
Influent total P (g/m3), 7 Influent PO43- as P (mg/L), 5;
Effluent PO43- as P (mg/L), 0.1 Wastewater alkalinity as CaCO3 (mg/L), 240
Aluminum chloride solution (%), 25 Aluminumchloride unit weight (kg/L), 1.25
Raw sludge properties
​Specific gravity, 1.03; moisture content (%), 94
Chemical sludge properties
​Specific gravity, 1.05; moisture content (%), 92.5