As a new water purification agent, polyferric sulfate is widely used in water treatment field. However, some water treatment plants find that the water quality becomes yellow after using polyferric sulfate treatment wastewater. What is the reason for this? What method can we avoid the yellow water quality after using polyferric sulfate?

The iron elements in the polyferric sulfate are divalent iron and trivalent iron. After hydrolysis, ferrous ions or iron ions will be formed in water. A large number of iron ions will cause the water quality to turn yellow. Once the amount of polyferric sulfate is too large, the content of iron ions in water will increase, and the wastewater will change color. Therefore, the dosage of polyferric sulfate shall be strictly controlled to avoid other adverse reactions caused by excessive dosing. However, when the amount of polyferric sulfate is too small in the polluted water, the hydrolysis of polyferric sulfate is insufficient to form colloidal particles. At this time, the iron ions hydrolyzed by polyferric sulfate are not oxidized, which will also cause the water body to turn yellow due to the presence of iron ions. Therefore, the root reason for the yellow water quality after the treatment of polyferric sulfate is that the polyferric sulfate itself contains iron. Therefore, in order to achieve the ideal effect of polyferric sulfate in sewage treatment, it is necessary to have a correct amount of polyferric sulfate. Gongyi Filter Industry Co.,Ltd reminds you that the best dosage by the experimental results is the most fundamental solution.