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Without coagulation removal rates in a single pass of a medium-rate filter were about 50%. This was dramatically improved, to over 90%, by dosing polyaluminium chloride. Dosing rate PAC is directly and continuously dosed from the containers in
Polyaluminium chloride (PAC) is a inorganic polymer flocculant. PAC has been developed for water treatment applications. Totally soluble in water it has a formula: Polyaluminium chloride is also used for several applications including the
