【摘要】 采用自行制备的具有不同SiO2 :Al:Fe(摩尔比值 )和碱化度的两类新型无机高分子混凝剂聚硅酸氯化铝铁 (PSAFC)和聚硅酸硫酸铝铁 (PSAFS)各 7种 ,直接对印染废水进行处理。从中选出 2种混凝剂 ,考察了pH值、混凝剂投量等对混凝效果的影响 ,并对混凝处理后 ,印染废水出水中残留混凝剂主要成分Al、Fe、SiO2 的含量进行分析。实验结果表明 ,氯化物型 (PSAFC)和硫酸盐型 (PSAFS)混凝剂对印染废水的色度、浊度、CODCr均有良好的去除效果 ;总体而言 ,PSAFS的混凝效果略优于PSAFC ;混凝处理后印染废水出水中残留铝、铁、硅的含量均比较低 ;pH值和碱化度对混凝剂在水体中残留铝含量有影响更多还原

【Abstract】 In this paper 14 newly developed inorganic polymer coagulants were prepared by ourselves, which have different SiO 2:Al︰Fe molar ratios and different values of basicity (B), and used to treat printing and dyeing wastewater. The experimental results indicate that the two series of coagulants PSAFC and PSAFS have good coagulation efficiency in treating the wastewater. In general, the coagulation effect of PSAFS is better than that of PSAFC. The residual aluminum, ferric and silica contents in water treated by PSAFC and PSAFS are affected by the pH values of water solution and the B values of the coagulants.更多还原