Can shorten the residence time of sewage in the process, improve the handling capacity of the sewage system. 2, PSAF PSAF removal of algae was significantly better than the PAC, can reduce the burden on the water treatment process and improve the processing efficiency, and most importantly, the residual aluminum than PAC less. 3, the temperature of the polymerization of aluminum silicate has little effect, polyaluminum silicate PSAF polyaluminum PAC treatment of wastewater is good, the formation of large precipitated particles, turbidity, color removal rate can be achieved Some good results Poly aluminum ferric silicate is the upgrade of aluminum chloride, aluminum polyaluminate can be replaced, the difference lies in. 4) Polymeric ferrosilicate is a new type of high efficient flocculant: 1, while the polyaluminum silicate overcomes the instability of a single series of flocculants, the flocculation effect is significantly better than PAC, the use of PSAF instead of PAC, Can improve the flocculation effect. 5) The measure of the effective component of polyaluminum chloride is aluminum oxide. The higher the degree of alkalinity is, the better the PAC adsorption bridging ability is, but the precipitation is liable to occur due to the proximity of [Al (OH) 3] n, Poor sex, in the water temperature 20-45 ℃ COD, precipitation time is short, with high stability