| 壳聚糖季铵盐在混凝-微滤工艺中的应用研究 |
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| 引用本文： | 陈才,刘晓艳,陆谢娟,王一楠,吴晓晖. 壳聚糖季铵盐在混凝-微滤工艺中的应用研究[J]. 工业水处理, 2020, 0(1): 52-55 |
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| 作者姓名： | 陈才 刘晓艳 陆谢娟 王一楠 吴晓晖 |
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| 作者单位： | 武汉科技大学城市建设学院;华中科技大学环境科学与工程学院 |
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| 基金项目： | 国家重点研发计划项目（2016YFC0400704） |
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| 摘 要： | 通过3-氯-2-羟丙基三甲基氯化铵(CTA)改性壳聚糖(CS)制备壳聚糖季铵盐(CS-CTA),并将其应用在混凝-微滤工艺中来研究其对出水水质和膜污染的影响。结果表明,在CS-CTA投加量为4 mg/L时,出水水质最好,此时UV254去除率为81.8%,浊度去除率为99%以上;在CS-CTA投加量为3 mg/L时,混凝出水引起的不可逆膜阻力最小,膜通量最高;与PAC相比,CS-CTA作为混凝剂能更有效地减缓膜污染。
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| 关 键 词： | 壳聚糖季铵盐 混凝 微滤 膜污染 |
Application of quaternary ammonium salt chitosan in coagulation-microfiltration process |
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| Chen Cai,Liu Xiaoyan,Lu Xiejuan,Wang Yi’nan,Wu Xiaohui. Application of quaternary ammonium salt chitosan in coagulation-microfiltration process[J]. Industrial Water Treatment, 2020, 0(1): 52-55 |
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| Authors: | Chen Cai Liu Xiaoyan Lu Xiejuan Wang Yi’nan Wu Xiaohui |
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| Affiliation: | (College of Urban Construction;Wuhan University of Science and Technology(Wuhan 430065,China;College of Environmental Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China) |
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| Abstract: | The quaternary ammonium salt of chitosan was prepared by modified chitosan with 3-chloro-2-hydroxy-propyl trimethylammonium chloride.Then it was applied in the coagulation-microfiltration process to study its effect on the effluent quality and membrane fouling.The experimental results showed that when the dosage of CS-CTA was 4 mg/L,there was the best water quality with 81.8%removal rate of UV254 and more than 99.9%turbidity.In addition,when the dosage of CS-CTA was 3 mg/L,the irreversible membrane resistance caused by the coagulation effluent was the minimum,and the membrane flux was the highest.CS-CTA as a coagulant can reduce membrane fouling more effectively than PAC. |
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| Keywords: | chitosan quaternary ammonium salt coagulation microfiltration membrane fouling |
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