Mechanism in Removing Dissolved Organic Matters by Poly-silicic-ferric (PSF) Coagulant

摘要

Poly-silicic-ferric (PSF) coagulant was prepared by co-polymerization method. The oxidization of PSF on humic acid (HA) and the characteristics of PSF were explored in comparison with that of polyferric aluminum (PFA). Mechanism of removing dissolved organic matters (DOMs) by PSF was analyzed. The results show that PSF is an oxidization coagulant and it maybe change the molecular structure of HA, thus modifying the nature of HA surface and the nature of the interface between HA and water solution, which leads to the improvement of adsorption of HA. Different pH values have different influence on the complexation mode between HA oxidized by PSF, PSF and kaolin.