聚硅酸硫酸铝铁(PSAFS)的合成

提出了一种新型无机高分子絮凝剂聚合硅酸硫酸铝铁(PSAFS),PSAFS保留了铝铁各自均聚物的优点,克服了聚合氯化铝(PAC)处理后水样中残留铝浓度较高和聚合氯化铁(PFC)稳定性较差的一些缺点,因此,近年来引起国内外的普遍关注.采用水玻璃、硫酸铝和硫酸铁为原料制备聚合硅酸硫酸铝铁,研究了各种因素对该无机高分子絮凝剂絮凝行为的影响,分析了聚硅酸的稳定性、Al/Fe/Si的摩尔比值与絮凝行为的关系,得到了最佳合成条件.

Synthetize of the Polysilic Aluminum Ferric Sulfate(PSAFS)

Polysilicate aluminum ferric sulfate(PSAFS) is presented as one kind of new polymerized inorganic coagulants. The advantage of aluminum and ferric homopolymer are still contained while the disadvantage is thrown away such as high Al residuals of polyaluminum chloride(PAC) in treated water and the poor stability of polyferric chloride(PFC).Because of those,considerable interest and attention have been paid to PSAFS home and abroad in recent years. PSAFS is prepared from aluminum sulfate and ferric sulfate and water glasses. The influence of different factors(the stability of ploy-silicic acid,Al/Fe/Si molar ratio,etc.) in flocculation is studied and the optimal compounding condition is obtained finally.