Abstract: Removal of Microcystis aeruginosa from the water sample coming from pure culture through cup flocculation experiments using ferric chloride, poly-aluminium chloride and aluminium sulphate as flocculants respectively had been investigated, the results showed that poly-aluminium chloride achieved the highest removal rate of alga and turbidity in the least dose (30 mg/L) as compared to the other two flocculants. Under optimal conditions of poly-aluminium chloride, addition of 6 mg/L PAM as an aide coagulant on...