... arsenic, mercury, widely used in drinking water, industrial water. Polyaluminium Chloride, called PAC, is a multi-hydroxy, polynuclear cationic complex body ... sedimentation speed, Shen decreased activity is good, no need of alkaline additives. Wide range of adaptation PH; low corrosion of pipelines ... used in drinking water, industrial water and wastewater treatment. Polyaluminium Chloride PAC