新型聚铝硅复合絮凝剂的制备及性能研究

本文初步制备了两种新型聚铝硅复合絮凝剂：聚铝硅（含活化硅酸聚合铝，ＰＡＣＳｉ）和聚硅铝（聚硅酸硫酸铝，ＰＳｉＡＳ），研究对比了ＰＡＣＳｉ，ＰＳｉＡＳ与ＰＡＣ的絮凝性能。考察了硅酸聚合程度，硅、铝含量对其絮凝性能的影响，结果表明，提高硅酸聚合程度或硅、铝含量的增加均有利于增强絮凝性能，且随（Ｓｉ）／（Ａｌ）比值的提高，其絮凝性能也明显增加，在铝含量相同情况下，聚铝硅和聚硅铝的絮凝性能均优于聚合氯化铝

THE STUDIES ON CHARACTERISTICS OF POLYALUMINUM-SILICON COMPLEX FLOCCULANTS

Two kinds of aluminum-silicon complex flocculants-Polyaluminum chloride containing activated silicic acid (PACSi) and polysilicic acid containing aluminum sulfate (PSiAS)were produced. The effect of silicic acid polymerization on the flocculation of PACSi and the effects of aluminum and silicon concentration on the flocculation of the two kinds flocculants were investigated. The comparison of coagulation and flocculation with the PACSi,PSiAS and PAC was also made. The studies show that,the polymerization of silicic acid is beneficial to raise the flocculation of the PACSi. The flocculation of PACSi and PSiAS increase with the increasing of aluminum and silicon concentration. The PACSi and PSiAS have better flocculation than PAC.