Like all coagulants PAC performs by extracting after which you can clumping with each other dissolved, colloidal and suspended subject. The resulting floc is then trapped within the filter. ACH is productive in eradicating suspended particles, natural and organic matter, and colloidal substances from water. It types smaller sized flocs https://www.tjcyindustrialchem.com/news/what-is-poly-aluminium-chloride.html