Like all coagulants PAC works by extracting and afterwards clumping with each other dissolved, colloidal and suspended matter. The resulting floc is then trapped around the filter. This Take note clarifies the application and dosing premiums for the various distinct grades of polyaluminium chloride staying sold in the UK. This https://www.tjcyindustrialchem.com/news/what-is-poly-aluminium-chloride.html