摘要：

以盐酸酸洗废液和废铁屑为原料，制备了聚硅酸聚合氯化铁复合型絮凝剂(PSPFC)，研究了聚铁中铁浓度、聚合硅酸浓度、聚合硅酸pH值、n(Fe)∶n(Si)及复合熟化时间等因素对絮凝性能的影响。正交试验结果表明，当制备条件为:Fe/Si物质的量比为1∶2，聚铁中铁浓度为0.6mol/L，复合熟化时间为40min时，研制的PSPFC对低浊污水(浊度10～20NTU)具有最佳处理效果，并具有较宽的pH适用范围。

关键词: 盐酸酸洗废液, 聚硅酸聚合氯化铁复合型絮凝剂, 低浊污水

Abstract:

By using the hydrochloric acid pickling wastewater and scrap iron asraw materials,the polysilicic acid-polyferric chloride (PSPFC)flocculant isprepared under different conditions.By investigating the removing rate of turbidity,the resultsshow that the flocculation efficiency isinfluenced by the Fe/Si molar rate,the solute concentra-tion of Fe³⁺,and especially influenced by the reaction time.The optional technological conditionsare asfollows:the Fe/Si molar rate is1 ∶2,the solute concentration of Fe 3+ is0.6mol/L and the reaction time is40min.The advantage of the PSPFC isthat it isgood for treating the light turbidity wastewater with a wide pH range

Key words: hydrochloric acid pickling wastewater, the polysilicic acid-polyferric chloride (PSPFC)flocculants, the light turbidity wastewater

中图分类号: 

• X703.5