新型絮凝剂PPFS的制备及其絮凝性能研究

Studies on new production method and flocculation properties of PPFS flocculants

基于固体聚硫酸铁-PFS-的制备方法,研究了固体聚磷硫酸铁-PPFS-的实验室制法,并对比了PPFS、PAS-聚硫酸铝-、PFS对Cu2+、CODMn的去除性能.结果表明,在制备条件下,P/Fe 为0.3:1的PPFS溶解性好,对Cu2+、CODMn的去除率明显优于PFS、PAS;P/Fe为0.4:1的PPFS 总Fe量、碱度及对Cu2+、CODMn的去除率均低于P/Fe为0.3:1的PPFS.

On the basis of production method PFS (polyferric sulfate), we made research on laboratory production method for solid PPFS (polyphosphoferric sulfate); and compared properties of PPFS, PAS (polyaluminum sulfate) for Cu2+, CODMn removal. Results show that under production condition, PPFS, as its P/ Fe=0.3:1, has good dissolubility and its removal rates of Cu2+, CODMn are better than those of PFS and PAS; while its P/Fe=0.4:1, its total Fe amount, alkalinity and removal rates of Cu2+, CODMn, are all lower than PPFS of which P/Fe=0.3:1.