Research Progress in Preparation,Modification and Application of Polyferric Sulfate
Polyferric sulfate is a new kind of inorganic macromolecular flocculant.Its surface activity and charge neutralization ability make it have better flocculating effect than traditional coagulants.It has broad application prospect in the field of water treatment.In recent years,its market demand is also growing.At present,the main processes for the preparation of polyferric sulfate are catalytic oxidation,direct oxidation and biological oxidation.Polymerized ferric sulfate and its modified products have good effects in turbidity removal,decolorization,removal of heavy metals and organic pollutants,and have been widely used in the purification and treatment of various sewage,and should be further studied in the future,and constantly improve the process to meet the needs of environmental governance.
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