PAC (Poly Aluminum Chloride) is a safe and water-soluble powder substance, which is used in water purification process. In water treatment, the purpose of coagulation process is to separate contaminants such as solid contaminants that are difficult to separate by filtration process. The coagulation process causes colloids and suspended particles to converge and then form heavier particles (flocs) that can easily be separated by precipitation or filtration.
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