Impacts of composite flocculant in coagulation/ultrafiltration hybrid process for treatment of humic acid water: the role of basicity
Impacts of composite flocculant in coagulation/ultrafiltration hybrid process for treatment of humic acid water: the role of basicity
复制标题
复合絮凝剂在混凝/超滤混合工艺处理腐殖酸水中的影响：碱度的作用
DOI：
10.1080/09593330.2020.1716856
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发表时间：
2020-01
影响因子：
2.8
通讯作者：
Yue Qinyan
中科院分区：
文献类型：
--
作者：
Yu Chenghui;Gao Baoyu;Shen Xue;Bu Fan;Jin Bo;Yue Qinyan
摘要在不同碱度（B）和Mg 2+存在的条件下，研究了复合絮凝剂聚合氯化铝-聚二甲基二烯丙基氯化铵（PACl-PDMDAAC）对混凝-超滤（C-UF）工艺的混凝效果和膜污染的影响，并与PAC进行了对比。结果表明，PACl-PDMDAAC增强了电中和和吸附架桥能力，提高了混凝效果。当B值为1.5时，絮凝剂水解生成较多的Al B形态，有效去除HA分子。Mg ~（2+）的存在可以通过架桥作用提高混凝性能。超滤试验结果表明，在C-UF工艺中，PACl的通量降低了70%，而PACl-PDMDAAC的通量降低了60%。PACl-PDMDAAC主要通过减少膜表面的滤饼/凝胶层来有效降低膜污染。当B值为1.5时，絮凝剂中Al B含量较高，吸附电中和能力强，形成稳定的滤饼层。因此，膜污染最轻。原水中Mg ~（2+）的存在降低了膜污染。图形摘要
ABSTRACT The effects of the composite flocculant, polyaluminium chloride and poly dimethyldiallylammonium chloride (PACl-PDMDAAC) in comparison with PACl on coagulation efficiencies and membrane fouling in coagulation-ultrafiltration (C-UF) process were analysed, which was conducted in the conditions of different basicity (B) values and the presence of Mg2+. Results showed that PACl-PDMDAAC enhanced the ability of charge neutralization and absorption bridging, and improved the coagulation efficiency. When B value was 1.5, the flocculant hydrolyzed to form more Alb morphology and effectively removed HA molecules. The presence of Mg2+ could improve the coagulation performance through bridging ability. The results of the ultrafiltration test showed that the flux reduction for PACl was 70%, while the flux reduction for PACl-PDMDAAC was 60% in C-UF process. PACl-PDMDAAC could effectively reduce membrane fouling mainly by reducing strongly attached cake/gel layer. When B value was 1.5, the Alb content of the flocculant was higher and the ability of adsorption charge neutralization was strong, resulting in forming a stable cake layer. Therefore, the membrane fouling was the lightest. In addition, the presence of Mg2+ in raw water reduced the membrane fouling. GRAPHICAL ABSTRACT
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影响因子：
12.8
作者：
Tabatabai, S. Assiyeh Alizadeh;Schippers, Jan C.;Kennedy, Maria D.
通讯作者：
Kennedy, Maria D.
影响因子：
12.8
作者：
Hong-xiao Tang;W. Stumm
通讯作者：
Hong-xiao Tang;W. Stumm
影响因子：
15.1
作者：
Zhonglian Yang;B. Gao;Q. Yue
通讯作者：
Zhonglian Yang;B. Gao;Q. Yue
DOI：
10.1016/j.colsurfa.2007.06.004
发表时间：
2007-12
期刊：
Colloids and Surfaces A: Physicochemical and Engineering Aspects
影响因子：
--
作者：
A. Heuer;A. Cox;S. Singleton;M. Barigou;M. Ginkel
通讯作者：
A. Heuer;A. Cox;S. Singleton;M. Barigou;M. Ginkel
影响因子：
2.8
作者：
Rahimi, Z.;Zinatizadeh, A. A.;Zinadini, S.
通讯作者：
Zinadini, S.