含铝废渣制备聚硅酸铝铁絮凝剂处理造纸废水  

Preparation of flocculant PAFSC by aluminium waste slag and application in pulping wastewater treatment

作　　者：刘晓红[1] 荀开昺[1] 杨方麒 邱舜国 

机构地区：[1]南昌大学资源环境与化工学院,江西南昌330031

出　　处：《无机盐工业》2016年第3期63-65,共3页Inorganic Chemicals Industry

摘　　要：以铝合金废渣为原料制备了聚硅酸铝铁(PAFSC)絮凝剂。通过单因素实验优选出盐酸浸取铝合金废渣最佳条件:反应时间为20 min,反应温度为80℃,盐酸浓度为6 mol/L,盐酸与铝物质的量比为3∶1。在此条件下铝的浸取率>95%。用浸取铝合金废渣得到的氯化铝溶液制备聚硅酸铝铁絮凝剂,并用于处理造纸废水。当聚硅酸铝铁絮凝剂投加量为400 mg/L时,其对造纸制浆废水COD、色度的去除率分别达到68%、92%。聚硅酸铝铁絮凝剂处理造纸制浆废水的效果优于聚合氯化铝(PAC)絮凝剂。Flocc ulant PAFSC was prepared by aluminium alloy waste slag as raw material.Through the single factor experiment,the optimum conditions to leaching aluminium waste slag in hydrochloric acid were as follows：reaction time was 20 min,reaction temperature was 80 ℃,hydrochloric acid concentration was 6 mol/L,and amount-of-substance ratio n（HCl）∶n（Al）=3∶1.The leaching rate of aluminium was more than 95% under these conditions.By leaching aluminium waste slag to get the aluminium chloride solution to produce the PAFSC and PAFSC was applied in pulping waste water treatment.Using 400 mg/L of the PAFSC to deal with the pulping wastewater,the COD removal rate and decolorization rate of pulping wastewater could reach 68% and 92% respectively.The effect of PAFSC was better than that of PAC（polyaluminium chloride）.

关 键 词：铝合金废渣 浸取 聚硅酸铝铁絮凝剂 处理 造纸废水 

分 类 号：TQ133.1[化学工程—无机化工]