【摘要】 以粉煤灰为主要原料制备复合无机高分子絮凝剂——聚硅磷氯化铝铁(PSPAFC),通过正交实验考察了原料的最佳配比,并对活化过程中的pH范围进行研究。结果表明,制备聚硅磷氯化铝铁的最佳原料配比为n(SiO2)∶n(Al+Fe)为2∶1,n(Al)∶n(Fe)为7∶3,n(P)∶n(Al+Fe)为3∶20,活化硅酸的最佳pH为2.5~3.5。将制备的PSPAFC用于模拟废水的处理,并与聚合氯化铝PAC、聚合氯化铝铁PAFC进行比较,结果表明,PSPAFC具有更好的絮凝效果。更多还原

【Abstract】 Inorganic polymer flocculant poly-siliceous phosphoric aluminum ferric chloride(PSPAFC) has been prepared by using fly ash,sodium silicate and sodium phosphate as raw materials.According to the 3-factor orthogonal test,the conditions of preparing PSPAFC are optimized:n(SiO2)∶n(Al+Fe) is 2∶1,n(Al)∶n(Fe) is 7∶3, n(P)∶n(Al+Fe) is 3∶20,pH of activated silicic acid is 2.5-3.5.The PSPAFC prepared by these ratios is used for treating the simulated wastewater.The results show that PSPAFC has better flocculating effect,compared with PAC and PAFC.更多还原