PAC is one of the coagulants (chemicals that cause destabilization of negative particles in suspensions) which can help to purify water, such as turbid well water. PAC is used when the pond is very damaged or for industrial wastewater, this chemical is shaped like flour, its function is to precipitate impurities at the bottom of the pond. Before using this chemical pH and Cl levels must be normal, then use PAC.
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