工业水处理 ›› 2011, Vol. 31 ›› Issue (9): 29-33. doi: 10.11894/1005-829x.2011.31(9).29

• 试验研究 • 上一篇    下一篇

阳离子絮凝剂HTCC 与PAC 复配絮凝效果研究

韦俊1, 常青1, 张文杰1, 张彦成1, 郝学奎2   

  1. 1. 兰州交通大学环境与市政工程学院, 甘肃兰州 730070;
    2. 兰州工业高等专科学校建筑工程系, 甘肃兰州 730050
  • 收稿日期:2011-07-21 修回日期:2011-07-21 出版日期:2011-09-20 发布日期:2011-09-29
  • 通讯作者: 常青,教授,E-mail:Changq47@mail.lzjtu.cn。 E-mail:Changq47@mail.lzjtu.cn
  • 作者简介:韦俊(1985- ),2011 年毕业于兰州交通大学,硕士。E-mail:19850119.kobe@163.com。
  • 基金资助:

    长江学者和创新团队发展计划资助项目(IRT0966);甘肃省自然科学基金项目(0803RTZA003)

Study on the flocculation effectiveness of cationic flocculant HTCC combined with PAC

Wei Jun1, Chang Qing1, Zhang Wenjie1, Zhang Yancheng1, Hao Xuekui2   

  1. 1. School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China;
    2. Building Engineering Department of Lanzhou Polytechnical College, Lanzhou 730050, China
  • Received:2011-07-21 Revised:2011-07-21 Online:2011-09-20 Published:2011-09-29

摘要:

通过正交试验制备了阳离子絮凝剂壳聚糖季铵盐(HTCC),研究了HTCC 与PAC 复配的除浊效果,确定最佳复配比为m(HTCC)∶m(PAC) =1∶1.6,在该复配比及最佳投加量下,浊度去除率达96% 以上,余浊<4 NTU。实验表明:pH 对HTCC/PAC 的除浊效果影响较大;沉降时间对除浊效果无明显影响; HTCC/PAC 处理后水样中的Al3+残余量明显低于国家生活饮用水卫生标准中的允许含量;HTCC/PAC 对黄河兰州段水样的絮凝效果良好,最佳投加量下出水余浊<3 NTU。

关键词: 壳聚糖季铵盐, 聚合氯化铝, 复配, 絮凝, 余铝

Abstract:

Cationic 2-hydroxypropyltrimethylammonium chloride chitosan(HTCC) has been prepared by orthogonal experiment. The removal rate of turbidity by composite flocculant HTCC/PAC is investigated,and its best composited ratio is determined to be m(HTCC)∶m(PAC)=1∶1.6. The turbidity removal rate reaches above 96% and residual turbidity reaches under 4 NTU by HTCC/PAC with this composite ratio and optimum dosages. The experiment shows that pH has great influence on the turbidity removal effectiveness of HTCC/PAC,but the influence of settling time on turbidity removal is not obvious. The residual aluminum of the water samples treated by HTCC/PAC is obviously lower than the aluminum permissible content of Standards for Drinking Water Quality. The flocculation effectiveness of HTCC/PAC on the water samples from Lanzhou section of Yellow River is quite good,and its residual turbidity is less than 3 NTU when the dosage of HTCC/PAC is optimum.

Key words: quaternized chitosan, polymeric aluminum chloride, composite, flocculation, residual aluminum

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