As a high-quality inorganic polymer flocculant, PFS is widely used in domestic water, industrial water and industrial wastewater treatment due to its excellent water treatment effect.

Polymerized ferric sulfate is easy to dissolve in water, because it is an acidic polymer, which generally presents strong acidity after dissolving in water. When the concentration of polymerized ferric sulfate is 1%, the pH value is generally between 2-3. When the pH value of the aqueous solution of polymerized ferric sulfate is greater than 4, it indicates that the production process of polymerized ferric sulfate is good, the basicity is high, and the effect of wastewater treatment will be better. On the contrary, the pH value of the aqueous solution of PFS is less than 2, which indicates that the basicity of PFS is low and the product quality is poor. When treating wastewater, it is often necessary to add appropriate alkaline additives.

Therefore, the pH value of wastewater treated by PFS can be used at 4-11, and it has the best effect when the pH value of wastewater is 6-9, and the coagulation effect is more excellent. The change of pH value in wastewater often directly affects the water treatment effect of PFS. When the pH of wastewater is less than 3 or greater than 11, the hydrolysis of ferrous sulfate will be affected. If the hydrolysis is not good, the water purification effect will be poor.