Membrane fouling in a submerged membrane bioreactor: An unified approach to construct topography and to evaluate interaction energy between two randomly rough surfaces

被引：14

作者：

Cai, Xiang ^{[1
]}

Shen, Liguo ^{[1
]}

Zhang, Meijia ^{[1
,2
]}

Chen, Jianrong ^{[1
]}

Hong, Huachang ^{[1
]}

Lin, Hongjun ^{[1
]}

机构：

[1] Zhejiang Normal Univ, Coll Geog & Environm Sci, Jinhua 321004, Peoples R China

[2] Lakehead Univ, Dept Chem Engn, 955 Oliver Rd, Thunder Bay, ON P7B 5E1, Canada

来源：

BIORESOURCE TECHNOLOGY | 2017年 / 243卷

基金：

中国国家自然科学基金;

关键词：

Membrane fouling; Surface morphology; Fractal theory; Membrane bioreactor; Extended DLVO theory; MICROBIAL PRODUCTS SMP; WASTE-WATER TREATMENT; INTERFACIAL INTERACTIONS; THERMODYNAMIC ANALYSIS; DLVO INTERACTION; GEL LAYER; PARTICLES; ADHESION; PLATE; INTEGRATION;

D O I：

10.1016/j.biortech.2017.07.054

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Quantitatively evaluating interaction energy between two randomly rough surfaces is the prerequisite to quantitatively understand and control membrane fouling in membrane bioreactors (MBRs). In this study, a new unified approach to construct rough topographies and to quantify interaction energy between a randomly rough particle and a randomly rough membrane was proposed. It was found that, natural rough topographies of both foulants and membrane could be well constructed by a modified two-variable Weierstrass-Mandelbrot (WM) function included in fractal theory. Spatial differential relationships between two constructed surfaces were accordingly established. Thereafter, a new approach combining these relationships, surface element integration (SEI) approach and composite Simpson's rule was deduced to calculate the interaction energy between two randomly rough surfaces in a submerged MBR. The obtained results indicate the profound effects of surface morphology on interaction energy and membrane fouling. This study provided a basic approach to investigate membrane fouling and interface behaviors. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：1121 / 1132

页数：12

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