... SS, COD, and arsenic, mercury, widely used in drinking water, industrial water. Polyaluminium Chloride, called PAC, is a multi-hydroxy, ... solid product. Distinctive feature of this product is the water effect is obvious, flocculation and sedimentation speed, Shen decreased ... metal ions; The product is widely used in drinking water, industrial water and wastewater treatment. Polyaluminium Chloride PAC