Overview of PFS Coagulation

Overview of PFS Coagulation:
As PFS forms numerous hydroxyl group linkages, these components induce various coagulation effects on mineral slurry particulates or colloidal particles in water. Lighter, higher valence complex ions are attracted to the negatively charged particles and suspended matter in raw water, compressing the double layer of the particle, reducing the ζ potential, destabilizing the particle, and promoting aggregation and precipitation. The molecular weight of inorganic polymer coagulants increases, leading to an increase in contact points and adsorption. In solution, PFS provides a large number of macromolecular complexes and hydrophobic hydroxide polymers, exhibiting superior adsorption. However, unlike organic flocculants, the molecular weight of these complex ions in PFS solutions is significantly lower. The size and structure of these ions contribute to their strong adsorption and neutralization effects during coagulation, making them the primary contributors to the adsorption and neutralization of particle charges and interparticle agglomeration. The surface area of PFS flocs is large, with high surface energy, compact and dense structure, and considerable strength. During sedimentation, it exhibits significant adsorption capacity for colloidal particles, has adsorption co-precipitation effects, and is prone to sweeping deposition phenomena. The volume of precipitates is small and the sedimentation rate is rapid, significantly enhancing the coagulation effect of PFS.