Characteristics of dynamic membrane filtration: structure, operation mechanisms, and cost analysis

Zhang, Yalei; Zhao, Yangying; Chu, Huaqiang; Dong, Bingzhi; Zhou, Xuefei

doi:10.1007/s11434-013-0048-x

Cited by 40 publications

(18 citation statements)

References 113 publications

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“…Ersahin et al [17] mainly focused on applications of physical dynamic membranes and biological dynamic membranes, giving an overview of the factors affecting the DM performance, which was not explained in detail. Zhang et al [18] explained the DM concept, DM formation mechanism, materials, fouling, and detailed DM development, giving an overall evaluation of DM technology. But in recent years, more attention was payed to the DM formation [6,[19][20][21][22][23][24][25], filtration [13,14,16,[26][27][28][29][30][31], and cleaning [9,32].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Membrane Filtration: Formation, Filtration, Cleaning, and Applications

2017

Chem Eng & Technol

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Applications of dynamic membrane (DM) filtration and factors affecting formation, filtration, and cleaning are introduced. DMs have been studied extensively for wastewater treatment in recent years. DM formation methods and mechanisms are explained. Effects of supporting material, deposited material, formation pressure, and pH on the DM formation are discussed in detail. The impacts of operation pressure, aeration intensity, cross-flow velocity, temperature, and other parameters on the DM filtration process are evaluated and different DM cleaning strategies are reviewed. The applications of DMs to treatments of municipal wastewater, surface water, oily water, industrial wastewater, sludge, and microalgae harvesting are discussed. Finally, possible future research directions and some guidelines for DM technology are given.

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Section: Introductionmentioning

confidence: 99%

Dynamic Membrane Filtration: Formation, Filtration, Cleaning, and Applications

2017

Chem Eng & Technol

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“…However, high capital and operating cost and inevitable fouling phenomenon hinders their extensive application [1]. In this regard, dynamic membranes (DMs) represent an attractive alternative to the use of conventional microfiltration and ultrafiltration (MF/UF) membranes by positively employing the fouling cake as a mean for solid liquid separation [2][3][4]. DM is a fouling surface that is formed by the deposition of suspended solids, colloids or microbial cell particles over an underlying support material (meshes, filter cloth etc.)…”

Section: Introductionmentioning

confidence: 99%

Analysis of fouling development under dynamic membrane filtration operation

Saleem

Alibardi

Cossu

et al. 2017

Chemical Engineering Journal

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This research is a contribution towards evaluating the appropriate fouling mechanism responsible for the flux decline under dynamic membrane (DM) filtration and its formation mechanism by using gravity-driven filtration in a specifically designed experimental setup. Series of extended short term filtration experiments were performed at varying operating conditions of mixed liquor suspended solids (MLSS) concentrations, trans-membrane pressures (TMP) and mesh pore sizes. Blocking models were applied to identify the fouling mechanisms occurring in DM development. The results demonstrated that cake filtration model can adequately describe fouling mechanisms during DM filtration. According to the analysis of variance, DM development, as described by flux (J) trends during filtration, was significantly affected only by MLSS concentration while effluent turbidity was significantly affected by MLSS concentration and TMP. On the contrary, J and effluent turbidity trends during filtration were not significantly influenced by mesh pore size, at least in the range used in this study (10–200 μm)

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“…Unlike traditional membranes, most of the interception for dynamic membrane technology is done by the dynamic cake layer, which is formed by fine particles on the underlying primary filter surface [9]. Either an ultrafiltration/microfiltration membrane or a porous mesh is commonly used as the underlying primary filter and support materials are chosen based on which is best suited for the different operations [10]. In the wastewater treatment process, activated sludge usually forms the dynamic membrane [11].…”

Section: Introductionmentioning

confidence: 99%