The decision aluminum polyferric chloride to make innocent clean water clarify the factors concluded that polyaluminum chloride to make stubborn clarify the clear water purification factors Summary PAC polluted water purification efficiency has been deeply loved by users. It is about the same as the earth and powder particles can be stubbornly purified water clear bottomed out. In the end what factors determine the water purification effect of PAC? This issue has also caused the concern of the water purifier industry. Today, the source of filtered water (PAC producers) leads us to understand that the main reason that PACF can purify stubborn sewage is because Which contains aluminum oxide or aluminum oxide and has the molecular formula of [Al2 (OH) nCl6-nxH2O] m (m≤10, n = 1-5) And particles have a high degree of neutralization and bridging effect, and can strongly remove micro-toxic and heavy metal ions, stable performance. Test Method: According to the international standard GB15892-2003 test. Also known as aluminum, there is hydrolysis speed, hydration weak. The formation of dense alum, settling speed. Affected by the small change of water temperature, it can meet the requirements of shear force generated during the flow of polyaluminum chloride. Which can effectively remove the aluminum ions in the source water and residual free aluminum ions in the water after coagulation of the aluminum salt. In appearance, 26,28% of the polymerized aluminum ferric chloride content is reddish-brown powder, while 30% of the polyaluminum is a golden yellow powder. Because 30% of the aluminum chloride contained in PAC is high, so the sedimentation rate, flocculation effect, solubility than the content of 26%, 28% of the good, and water quality after the water are very it is good. Suitable for drinking water treatment. So its price is a little higher than the other two.