Polyferric sulfate is a kind of inorganic polymer coagulant with excellent performance. Its solid is light yellow powder solid, amorphous and easily soluble in water. The liquid is 10% (mass) aqueous solution, which is a reddish brown transparent solution with hygroscopicity. Polyferric sulfate is widely used in the purification of drinking water, industrial water, various industrial wastewater, urban sewage, sludge dewatering, etc.

What are the raw materials and process of PFS? Next, Baoyuan environmental protection polyferric sulfate manufacturer will introduce it to you.

Polyferric sulfate can be divided into solid and liquid, the liquid is reddish brown viscous liquid; the solid is a kind of red granular water-soluble substance. The basic preparation method of liquid polyferric sulfate is to use ferrous sulfate and sulfuric acid as raw materials, convert ferrous sulfate into trivalent iron through oxidation reaction, and polymerize to polyferric sulfate at the same time. The industrial waste liquid containing ferrous sulfate and sulfuric acid can be used as raw materials to adjust the iron content and the ratio of iron and sulfuric acid for oxidation and polymerization.

Solid polyferric sulfate can be prepared by evaporation of liquid polyferric sulfate under reduced pressure or by air oxidation plus sulfuric acid. This method has simple equipment and is a better method to prepare solid polyferric sulfate.

After partial dehydration, hydrated ferric sulfate is oxidized into basic ferric sulfate through high temperature air. Compared with ferrous sulfate aqueous solution, solid ferrous sulfate is more easily oxidized. The basic ferric sulfate can react with sulfuric acid and water without catalyst, and the molar ratio of SO4 ^ 2 - to iron can be adjusted to synthesize polymeric ferric sulfate.