Formation mechanism and structure of dynamic membrane in the dynamic membrane bioreactor
A dynamic membrane bioreactor (DMBR) was developed by substituting dynamic membrane (DM) for the separation membrane in the submerge membrane bioreactor. The formation mechanism and structure of dynamic membrane were investigated. Firstly, based on the flux behaviors of dynamic membrane under consta...
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| Veröffentlicht in: | Chemical engineering journal (Lausanne, Switzerland : 1996) Switzerland : 1996), 2009-05, Vol.148 (2), p.290-295 |
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| container_title | Chemical engineering journal (Lausanne, Switzerland : 1996) |
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| creator | Liu, Hongbo Yang, Changzhu Pu, Wenhong Zhang, Jingdong |
| description | A dynamic membrane bioreactor (DMBR) was developed by substituting dynamic membrane (DM) for the separation membrane in the submerge membrane bioreactor. The formation mechanism and structure of dynamic membrane were investigated. Firstly, based on the flux behaviors of dynamic membrane under constant filtration pressure, the formation mechanism of dynamic membrane was assumed in a creative way by dividing the formation process of dynamic membrane into four stages, which was then proved by four classic filtration laws. Furthermore, by the proposed formation mechanism, dynamic membrane from inner to outer was divided into three layers, namely substrate layer, separation layer and fouling layer. Moreover, by combining the theory of hydrokinetic boundary layer with the formation mechanism of dynamic membrane, the methods for calculating the optimum cross-flow velocity on membrane surface and aeration amount for controlling membrane fouling were provided. |
| doi_str_mv | 10.1016/j.cej.2008.08.043 |
| format | Article |
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The formation mechanism and structure of dynamic membrane were investigated. Firstly, based on the flux behaviors of dynamic membrane under constant filtration pressure, the formation mechanism of dynamic membrane was assumed in a creative way by dividing the formation process of dynamic membrane into four stages, which was then proved by four classic filtration laws. Furthermore, by the proposed formation mechanism, dynamic membrane from inner to outer was divided into three layers, namely substrate layer, separation layer and fouling layer. Moreover, by combining the theory of hydrokinetic boundary layer with the formation mechanism of dynamic membrane, the methods for calculating the optimum cross-flow velocity on membrane surface and aeration amount for controlling membrane fouling were provided.</description><identifier>ISSN: 1385-8947</identifier><identifier>EISSN: 1873-3212</identifier><identifier>DOI: 10.1016/j.cej.2008.08.043</identifier><language>eng</language><publisher>Oxford: Elsevier B.V</publisher><subject>Applied sciences ; Biological and medical sciences ; Biotechnology ; Chemical engineering ; Compressibility ; Dynamic membrane bioreactor ; Exact sciences and technology ; Filtration ; Fundamental and applied biological sciences. Psychology ; Liquid-liquid and fluid-solid mechanical separations ; Membrane flux ; Membrane resistance ; Methods. Procedures. 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Moreover, by combining the theory of hydrokinetic boundary layer with the formation mechanism of dynamic membrane, the methods for calculating the optimum cross-flow velocity on membrane surface and aeration amount for controlling membrane fouling were provided.</description><subject>Applied sciences</subject><subject>Biological and medical sciences</subject><subject>Biotechnology</subject><subject>Chemical engineering</subject><subject>Compressibility</subject><subject>Dynamic membrane bioreactor</subject><subject>Exact sciences and technology</subject><subject>Filtration</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Liquid-liquid and fluid-solid mechanical separations</subject><subject>Membrane flux</subject><subject>Membrane resistance</subject><subject>Methods. Procedures. 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| identifier | ISSN: 1385-8947 |
| ispartof | Chemical engineering journal (Lausanne, Switzerland : 1996), 2009-05, Vol.148 (2), p.290-295 |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Applied sciences Biological and medical sciences Biotechnology Chemical engineering Compressibility Dynamic membrane bioreactor Exact sciences and technology Filtration Fundamental and applied biological sciences. Psychology Liquid-liquid and fluid-solid mechanical separations Membrane flux Membrane resistance Methods. Procedures. Technologies Others Reactors Various methods and equipments Voidage |
| title | Formation mechanism and structure of dynamic membrane in the dynamic membrane bioreactor |
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