Coagulation performance and membrane fouling of different aluminum species during coagulation/ultrafiltration combined process

被引：73

作者：

Feng, Lijuan ^{[1
,2
]}

Wang, Wenyu ^{[2
]}

Feng, Ruiqi ^{[2
]}

Zhao, Shuang ^{[2
]}

Dong, Hongyu ^{[2
]}

Sun, Shenglei ^{[2
]}

Gao, Baoyu ^{[2
]}

Yue, Qinyan ^{[2
]}

机构：

[1] Jining Univ, Dept Chem & Chem Engn, Key Lab Inorgan Chem Univ Shandong, Qufu 273155, Shandong, Peoples R China

[2] Shandong Univ, Sch Environm Sci & Engn, Shandong Prov Key Lab Water Pollut Control & Reso, Jinan 250100, Peoples R China

来源：

CHEMICAL ENGINEERING JOURNAL | 2015年 / 262卷

基金：

中国国家自然科学基金;

关键词：

Al species; Coagulation performance; Coagulation/ultrafiltration; Membrane fouling; ORGANIC-MATTER FLOCS; HYBRID PROCESS; ULTRAFILTRATION MEMBRANES; SIZE DISTRIBUTION; MFI-UF; AL-13; MICROFILTRATION; PARTICLES; FLOCCULATION; FILTRATION;

D O I：

10.1016/j.cej.2014.10.078

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Three species of aluminum coagulants mainly consist of mononuclear Al species (Al-a), medium polymeric species (Al-b) and colloidal species (Al-c) were prepared, separated and purified by organic solvent precipitation method. The effect of different Al species on coagulation performance and membrane fouling were investigated through the coagulation-ultrafiltration hybrid process. The influence of flocs characteristics were also studied to build the relation model between Al species coagulation and membrane fouling mechanisms. The results showed different Al species combined with humic acid (HA) in diverse ways feature distinct floc properties and membrane fouling. Al-a coagulant had better UV254 and dissolved organic carbon (DOC) removal efficiency. Furthermore, Ala and Ale were beneficial to form larger flocs with lower strength and looser structure, whereas Alb was prone to form small flocs with higher strength and compact structure. Ultrafiltration experiments indicated that Alb is the most effective Al species to alleviate membrane fouling. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：1161 / 1167

页数：7

共 31 条

[1] Coagulation and ultrafiltration: Understanding of the key parameters of the hybrid process [J].