Like all coagulants PAC functions by extracting then clumping together dissolved, colloidal and suspended issue. The ensuing floc is then trapped around the filter. You will find now a amount of different grades of PAC with aluminium concentrations amongst nine.five% and eighteen%. The focus of aluminium isn't the only thought https://www.tjcyindustrialchem.com/news/what-is-poly-aluminium-chloride.html