Addition of Particles for Fouling Minimization in Membrane Bioreactors - Permeability Performance, Fluid Dynamics, and Rheology

Membrane bioreactors (MBR) with submerged flat sheet modules follow the airlift loop flow principle. The addition of particles is a new development in MBR fouling control. Experiments with plastic beads clearly show a mechanical cleaning effect. Biologically active beads (quorum quenching) can furth...

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Veröffentlicht in:Chemie ingenieur technik 2016-02, Vol.88 (1-2), p.29-38
Hauptverfasser: Rosenberger, Sandra, Helmus, Frank Peter, Drews, Anja
Format: Artikel
Sprache:eng
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Zusammenfassung:Membrane bioreactors (MBR) with submerged flat sheet modules follow the airlift loop flow principle. The addition of particles is a new development in MBR fouling control. Experiments with plastic beads clearly show a mechanical cleaning effect. Biologically active beads (quorum quenching) can further reduce membrane fouling. The effectiveness of the particles depends on the flow conditions, though. To select or design such additives properly, as well as to optimize air flow rates, the complex fluid dynamics of the multiphase airlift loop flow and the rheology of the biomass need to be understood. Membrane fouling is one of the major issues in MBR research and operation. Recently, the addition of solid particles – mechanically or also biologically active – has been introduced. To select or design such additives properly, and to optimize air flow rates, the complex multiphase airlift loop fluid dynamics and the rheology of the biomass need to be understood.
ISSN:0009-286X
1522-2640
DOI:10.1002/cite.201500112