COMPANY NEWS

Application of Polyferric Sulfate in Paper Industry

Polyferric sulfate is a new type of polymer flocculant. Solids are light yellow amorphous powders with strong hygroscopicity. The product has good solidification performance, stable chemical performance and stable speed. With a wide range of PH values, it can be widely used in drinking water, various industrial water, industrial waste water and urban sewage purification. In addition to the treatment of domestic water, polyferric sulfate can also be used for the treatment of industrial paper wastewater.

Ferrous sulfate is a common coagulant decolorant in the color removal of paper wastewater because it has good decoloring effect and low cost. However, due to the large amount of iron sludge produced after decoloration due to the addition of ferrous sulfate, the treatment cost of sludge has been greatly increased. In recent years, more and more enterprises have adopted polyferric sulfate to coagulate and decolor paper-making wastewater. The decoloring effect is up to 96%, which is better than ferrous sulfate. The sludge volume is small and dense, and the flocculation effect is good.

The electro-neutralization and bridge-building adsorption function of polyferric sulfate absorbs and settles the suspension of chromogenic groups in paper-making wastewater to achieve the effect of color removal. Polyferric sulfate is hydrolyzed to produce a large number of polynuclear complexes which can catch colored suspensions in wastewater. Ferric hydroxide formed by hydrolysis of polyferric sulfate is metal-active, and can replace the non-ferrous groups in water for wastewater with high color, quickly forming dense sludge precipitation. Commonly used chemical coagulants are poly-ferric sulfate aluminum sulfate and ferrous sulfate + hydrogen peroxide, etc. Of course, organic coagulant polyacrylamide also has very good flocculation effect, of course, its cost will be relatively high. In addition, high-color paper wastewater can also be treated by membrane separation, chemical oxidation, electroflocculation, etc. But in general, in order to improve the treatment efficiency and reduce the treatment cost, coagulation decoloration + biochemical method is mostly used.

Thank you for your attentionHenan aierfuke Chemical Co., Ltd：Focus on water treatment, only for the healthy world! Our company is committed toPolyaluminium chloride、Polyferric sulfateThe R & D, manufacturing and sales of series of water purification materials are willing to create success with our customers and friends.