文档介绍：Removal of Phosphate from Aqueous Solution with
Fe-Mn Oxide Formed in Situ by KMnO4-Fe(II)
Process
Ke Liu, Jun Ma*, Qingdong Qin
State Key Laboratory of Urban Water Resource and Environment
Harbin Institute of Technology
Harbin, China
*******@hit.
Abstract—The removal of phosphate by KMnO4-Fe(II) process Coagulation–ulation with aluminum or iron salt is the
was investigated under different experimental conditions. The monly used for removal of pounds in
results showed that mix speeds and settling time had no raw sewage. Several studies have been performed to determine
significant effect on phosphate removal. The removal of the effectiveness of chemical coagulation, ulation and
phosphate was gradually increased with the increase of Fe precipitation in wastewater treatment [6, 7]. Other study
dosages and decreased with the increase of pH. When the pH
increased from 4 to 9, the removal of phosphate decreased from confirmed that Fe(III) was more effective than aluminum in
chemical precipitation of phosphate as indicated by the
% to %. Compared with ferric sulfate, the KMnO4-
Fe(II) process was more efficient for phosphate removal. The residual phosphate in solution [8]. In addition, Fe oxide
presence of turbidity had limited effect on phosphate removal at formed in situ could enhance the removal of phosphate
lower pH and res