Poly Aluminum Chloride is a highly efficient water treatment chemical where it works as a coagulant to extract and clump together contaminants, colloidal and suspended matter. This results in the formation of floc (flocculation) for removal via filters. The below image showing coagulation in action illustrates this process.

Poly Aluminum Chloride products for use in water treatment are typically characterized by their level of basification (%). Basification is the concentration of hydroxyl groups relative to aluminum ions. The higher the basicity, the lower the aluminum content and therefore the higher performance regarding contaminant removal. This lower rate of aluminum also benefits the process where aluminum residuals are greatly reduced.