含铝废渣制备聚硅酸铝铁絮凝剂处理造纸废水
|
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).
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).
引文
[1]张瑛,阮晓红.水处理混凝剂及其发展方向[J].污染防治技术,2003,16(4):45-49.
[2]陈国斌,唐课文,朱政兵.聚硅酸氯化铝铁絮凝剂的研制和应用[J].湖南理工学院学报:自然科学版,2003,16(4):47-49.
[3]景红霞,李巧玲,王亚昆,等.从粉煤灰中制备聚硅酸铝铁絮凝剂及应用研究[J].化学工程师,2006(1):9-11.
[4]高秀美,衣守志,王青臣.聚硅酸氯化铝铁絮凝剂的合成及其特性[J].水资源保护,2007,23(3):77-79.
[5]俞尚清,潘志彦,钱小飞,等.聚硅酸氯化铝铁絮凝剂制备及絮凝效果的研究[J].环境污染与防治,2004,26(2):121-123.
[6]张巍巍,郑永杰,田景芝.聚硅酸氯化铝铁絮凝剂的制备及其应用[J].化工时刊,2012,26(11):23-26.
[7]马同森,樊忠昌.纳米聚硅酸铝铁絮凝剂的制备和性能[J].化学研究,2007,18(2):24-27.
[2]陈国斌,唐课文,朱政兵.聚硅酸氯化铝铁絮凝剂的研制和应用[J].湖南理工学院学报:自然科学版,2003,16(4):47-49.
[3]景红霞,李巧玲,王亚昆,等.从粉煤灰中制备聚硅酸铝铁絮凝剂及应用研究[J].化学工程师,2006(1):9-11.
[4]高秀美,衣守志,王青臣.聚硅酸氯化铝铁絮凝剂的合成及其特性[J].水资源保护,2007,23(3):77-79.
[5]俞尚清,潘志彦,钱小飞,等.聚硅酸氯化铝铁絮凝剂制备及絮凝效果的研究[J].环境污染与防治,2004,26(2):121-123.
[6]张巍巍,郑永杰,田景芝.聚硅酸氯化铝铁絮凝剂的制备及其应用[J].化工时刊,2012,26(11):23-26.
[7]马同森,樊忠昌.纳米聚硅酸铝铁絮凝剂的制备和性能[J].化学研究,2007,18(2):24-27.