Like all coagulants PAC functions by extracting then clumping together dissolved, colloidal and suspended issue. The ensuing floc is then trapped on the filter. Alum is efficient in getting rid of turbidity and suspended particles. It is commonly used in wastewater therapy and it is Price-efficient for large-scale applications. At https://www.tjcyindustrialchem.com/news/what-is-poly-aluminium-chloride.html