壳聚糖絮凝处理高岭土精选废水研究Study on Flocculation of Kaolin Beneficiation Wastewater by Chitosan
龙来寿;周悦;梁凯;李建渠;
摘要(Abstract):
[目的]研究壳聚糖对高岭土精选废水的絮凝性能。[方法]采用烧杯混凝试验对高岭土精选废水进行絮凝处理,分别探讨废水的pH值和壳聚糖的投加量对废水中悬浮物去除效率的影响,同时测定其絮凝胶体颗粒的ζ电位。[结果]壳聚糖对高岭土精选废水中的悬浮物具有很强的絮凝效能。在pH值为4.0~7.0及壳聚糖投加量为8.0 mg/L的条件下,悬浮物的去除率大于96%。颗粒ζ电位测定结果表明,电性中和、吸附架桥是壳聚糖絮凝的主要作用机理。[结论]该研究为壳聚糖在高岭土精选废水絮凝处理中的应用提供了科学依据。
关键词(KeyWords): 壳聚糖;絮凝;高岭土精选废水;废水处理
基金项目(Foundation): 韶关市科技计划项目(韶科教2006-12)
作者(Author): 龙来寿;周悦;梁凯;李建渠;
Email:
DOI: 10.13989/j.cnki.0517-6611.2009.31.042
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