Membrane fouling in a submerged membrane bioreactor with focus on surface properties and interactions of cake sludge and bulk sludge

被引：27
|
作者：
Yu, Haiying [1 ]
Lin, Hongjun [1 ]
Zhang, Meijia [1 ]
Hong, Huachang [1 ]
He, Yiming [2 ]
Wang, Fangyuan [1 ]
Zhao, Leihong [3 ]
机构：
[1] Zhejiang Normal Univ, Coll Geog & Environm Sci, Jinhua 321004, Peoples R China
[2] Zhejiang Normal Univ, Dept Mat Phys, Jinhua 321004, Peoples R China
[3] Zhejiang Normal Univ, Zhejiang Key Lab React Chem Solid Surfaces, Inst Phys Chem, Jinhua 321004, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2014年 / 169卷
基金：
中国国家自然科学基金;
关键词：
Membrane fouling; Specific filtration resistance; Surface tension; Interaction energy; EXTRACELLULAR POLYMERIC SUBSTANCES; WASTE-WATER TREATMENT; BIOFLOCCULATION; MICROORGANISMS; PERFORMANCE; FRACTIONS; LAYER;
D O I：
10.1016/j.biortech.2014.06.099
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
In this study, the fouling behaviors and surface properties of cake sludge and bulk sludge in a submerged membrane bioreactor (MBR) were investigated and compared. It was found that the specific filtration resistance (SFR) of cake sludge was about 5 times higher than that of bulk sludge. Two types of sludge possessed similar extracellular polymeric substances (EPS) content, particle size distribution (PSD) and zeta potential. However, their surface properties in terms of surface tensions were significantly different. Further analysis showed that cake sludge was more hydrophilic and had worse aggregation ability. Moreover, cake sludge surface possessed more hydrocarbon, less oxygen and nitrogen moieties than bulk sludge surface. It was suggested that, rather than EPS and PSD differences, the differences in the surface composition were the main cause of the great differences in SFR and adhesion ability between cake sludge and bulk sludge. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：213 / 219
页数：7
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