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How to use polyferric sulfate in winter

In autumn, the weather gradually begins to cool. What is the coagulation effect of polymeric ferric sulfate for sewage treatment at this low temperature? Many customers must have consulted about this problem. During the use of polyferric sulfate produced by Yicheng water purification manufacturer in sewage treatment, do we find that the coagulation effect of polyferric sulfate is also different at different temperatures. Generally, the coagulation effect of polyferric sulfate is very good at high temperature, but at low temperature? How about the coagulation effect of polymeric ferric sulfate?

In use, polyferric sulfate dissolves rapidly with the rise of water temperature. When the wastewater temperature reaches about 70 ℃, polyferric sulfate forms a saturated solution, and the solubility of trivalent iron ions is higher than 11-13. The higher the reaction concentration of iron ions, the faster the coagulation reaction speed. Of course, when the temperature continues to rise, Due to the influence of alkalinity on the polymerization effect, the coagulation performance is reduced, Polyferric sulfate decreases with temperature (below 20 ℃), it will inhibit the hydrolysis of polymerized ferric sulfate, weaken the Brownian motion between trace molecules in water, and reduce the adsorption viscosity of colloid, resulting in the weakening of the settling speed of flocs formed by the adsorption of suspended particles by polynuclear complexes.

The solubility of polymerized ferric sulfate will decrease with the decrease of temperature, resulting in the deterioration of its coagulation effect. When the temperature is as low as about 2 ℃, polymerized ferric sulfate The hydrolysis rate will become particularly slow. Therefore, in winter water treatment, thermal insulation measures and indoor thermal insulation shall be taken for the dosing of polyferric sulfate to ensure the coagulation effect of polyferric sulfate. Therefore, it is obvious that the coagulation effect of polymeric ferric sulfate at low temperature is not good, but after taking certain thermal insulation measures, the effect of using polymeric ferric sulfate in low temperature weather is also very good.

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.