Synthesis and Performances of PSAFMnS Flocculant

In this article,a new type PSAFMnS flocculant was synthesized by using Mn to modify PSAFS flocculant through compositing method.The effects of various factors on the performance of PSAFMnS flocculant during the preparation were tested and the structure of PSAFMnS flocculant was indicated by SEM.The optimized synthesis conditions of PSAFMnS flocculant was obtained as follows: ① the Si content,in term of the SiO2 content,≈ 2% and pH ≈ 5.0 for steady silica sol;② the molar ratio of Si,Al,Fe and Mn≈ 6∶ 8∶ 4∶ 3,pH ≈ 1.5,the temperature ≈ 25℃ and the reaction time ≈ 30 min.When the dosge of the PSAFMnS was 5 mg/L,the turbidity removal ratio of kaolin solution achieved 75%.The turbidity and oil removal abilities of PSAFMnS flocculants were obviously better than that of PSAFS flocculants,the turbidity removal ratio enhanced 17.96% based on 57.93% of PSAFS.