... C, on the selective adssubstances.orption of dissolvedPAC use precautions, and dosage 1, according to the ... drying, without dilution, loading and unloading easy to use, the price advantage of relatively cheap, disadvantage is ... shade, and do not damp. Poly-aluminum chloride1, use should be made according to the quality scale, ... water standards High quality of PAC for industrial wastewater treatment