| 聚合硅酸硫酸铝铁处理造纸中段废水 |
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| 引用本文： | 惠磊,张安龙,刘帅.聚合硅酸硫酸铝铁处理造纸中段废水[J].造纸化学品,2011,23(1):18-22. |
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| 作者姓名： | 惠磊 张安龙 刘帅 |
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| 作者单位： | 陕西科技大学造纸工程学院,陕西西安,710021 |
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| 摘 要： | 该文采用硫酸铝、硫酸铁和硅酸钠等为原料,制备聚合硅酸硫酸铝铁（polymeric aluminum ferric sulfate,PAFSS）絮凝剂,研究了n（Si）：n（Al）：n（Fe）、pH等因素对所制PAFSS在去除造纸废水的色度及COD_（Cr）时的影响,对PAFSS的物化特性进行了系统的研究。结果表明：n（Si）：n（Al）：n（Fe）、pH和反应温度对PAFSS性能有重要影响;聚硅酸与铝离子、铁离子及铝铁水解产物间存在一定的络合作用,这种作用对PAFSS聚集体的结构形貌、铝离子和铁离子的水解聚合过程及铝、铁水解产物的形态分布都有一定的影响。在n（Fe＋Al）：n（Si）=3：1、n（Al）：n（Fe）=4：1、pH=4和温度为40℃等条件下制得的PAFSS对废水色度和COD_（Cr）有很好的去除效果,并通过对PAFSS絮凝机理分析,可知PAFSS的絮凝作用主要是通过电中和和吸附架桥2方面实现的。
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| 关 键 词： | 造纸废水 聚合硅酸硫酸铝铁 废水处理 色度 耗氧量 |
Treating Pulp Washing and Bleaching Effluent Using Polyaluminumeferric Silicate-sulfate |
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| HUI Lei,ZHANG An-long,LIU Shuai.Treating Pulp Washing and Bleaching Effluent Using Polyaluminumeferric Silicate-sulfate[J].Paper Chemicals,2011,23(1):18-22. |
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| Authors: | HUI Lei ZHANG An-long LIU Shuai |
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| Affiliation: | HUI Lei,ZHANG An-long,LIU Shuai (College of Pulping and Papermaking Engineering,Shanxi University of Science and Technology,xi'an 710021,China) |
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| Abstract: | In this paper,aluminum sulfate,ferric sulfate,sodium silicate were used as raw materials to prepare polyaluminum ferric silicate sulfate(PAFSS),which was employed as flocculant of pulp washing and bleaching effluent The influence of molar ratio of Si to Al to Fe,pH and other factors on removal of the colority and COD_(Cr) of the effluent and the physical and chemical characteristics of the PAFSS were investigated systematically.The results show that the Al/Fe/Si molar ratio,pH and reaction temperature have ... |
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| Keywords: | wastewater polymeric aluminum ferric sulfate(PAFSS) wastewater treatment color COD_(Cr) |
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