PAC, is an inorganic high polymer flocculating agent which has many nucleus, the solid material is light yellow. It has an obvious effect on water purifying, the flocculating precipitation speed is very fast, having good activity, don’t need to add alkali assistant. It is applied to a wide range of PH values. The corrosion to the pipe equipment is very low, and it can remove the colors SS,COD, BOD and the heavy metal Hg and so on. It can be widely used in drinking water, industrial water and waste water treatment area. flocculating agent.. IIt PAC Physical and chemical index: index name Product level Drinking water 1st Level Non-drinking water 2nd level （AL2O3 29-32％ 29-30％ Salt base％ 60-85 60-85 PH(1%water solution) 3.5-5.0 3.5-5.0 matter content cannot water in water ≤1.5 ≤1.5 Pb ppm ≤3 Cr ppm ≤1.5 Fe ppm ≤0.3 Hg ppm ≤0.02