Poly Aluminum Chloride (PAC) Poly Aluminum Chloride (PAC) is widely used as a coagulant in various industrial applications. During the water treatment process, PAC is used to remove suspended solids and other contaminants from the surface water. The advantages of using PAC in water treatment includes Purifies Water and Effluent better Less sludge is formed or carried Do not require lime with PAC Safer to health Broad flocculation range according to pH (4.5 to 9.0) Applications Water treatment Waste water treatment Sewage treatment Paper and pulp manufacturer Separation of suspended (solids) from effluent water Reduction of BOD and COD