摘要
以硅酸钠 ,稀盐酸和氯化铁为原料研制了高稳定性含铁聚硅酸混凝剂 (简称SPFS) .研究了制备过程中聚合时间及Fe/SiO2 摩尔尔比等因素 ,对产物混凝性能的影响 ,并试验了SPFS的最佳 pH适用范围 ,对其混凝机理进行了探讨 .结果表明 ,聚合时间为90min ,Fe/SiO2 摩尔比值为l.0时 ,所制备的SPFS具有最佳的混凝除浊性能 ,且 pH适用范围宽 .其混凝性能既高于聚合铁PFC也优于聚硅酸PSA .
Stabilized Polymeric Ferric Silicate (SPFS), a new kind of coagulant, has been prepared by using sodium silicate, chloride acid and ferric chloride as row materials. The effect of polymeric time and Fe/SiO 2 in preparation on coagulation of SPFS was studied. The optimum pH range for coagulation was examined and the coagulation mechanism was discussed. The experimental results showed that the turbidity removal effect of SPFS reach optimum and the pH range suitable for coagulation is wide when the molar ratio of Fe/SiO 2 is 1 and the polymeric time are 90 min. SPFS has advantage in coagulation over PFC and PSA.
关键词
无机高聚物
性能分析
制备
混凝沉淀/混凝剂
Inorganic polymers
Performance analysis
Preparation
Coagulating Sedimentation / Coagulant
