reported removal
of 99.5% turbidity from domestic wastewater using polymeric
phosphate-aluminum chloride (PPAC) at 18.5 mg/L. Haydar and Aziz
(2009) used a mixture of alum and anionic polymer A-100 (MW = 15
million Dalton; charge density (CD) = 16%). The results were 99.7%
turbidity and 96.3% SS removed by a 30 mg/L dose. In the present