【摘要】 以硅酸钠和硫酸亚铁为原料,制备了一种无机高分子型聚硅酸亚铁复合絮凝剂,考察了其絮凝条件:适用于处理碱性污水。并将制备的聚硅酸亚铁复合絮凝剂应用于含铬污水处理中,与聚硅酸铁及硫酸亚铁絮凝剂进行絮凝效果对比,结果表明聚硅酸亚铁絮凝剂对含铬污水处理效果较好,当絮凝剂投加量为15 mg/L时,除浊率达98%,Cr(Ⅵ)去除率达95%,总Cr去除率达88%。更多还原

【Abstract】 A type of inorganic polymer flocculant,polysilicate-ferrous composite flocculant was prepared from ferrous sulfate and sodium silicate. Its flocculation conditions were investigated. It’s pointed out that the polysilicate-ferrous composite flocculant is appropriate for alkaline wastewater treatment. The prepared polysilicate-ferrous composite flocculant was used in chromium wastewater treatment and compared with polysilicate-ferric flocculant and ferrous sulfate flocculant. The results show that the polysilicate-ferrous composite flocculant has better effect for chromium wastewater treatment. When its dosage is 15 mg/L, the removal rate of turbidity is 98%, the removal rate of Cr(Ⅵ) is 95%, the removal rate of total Cr is 88%.更多还原