THE INFLUENCE OF MEMBRANE CONFIGURATION ON THE EFFICACY OF MEMBRANE BIOREACTORS FOR DOMESTIC WASTE WATER RECYCLING
Abstract:The management of water resources is one of the most important issues facing the industrialised world over the forthcoming decades. Recycling and reuse of urban water can make a valuable contribution to the sustainability of currently available resources. Membrane bioreactors (MBRs) are one of the most promising technologies to enable such reuse. MBRs combine the benefits of a physical separation membrane and a suspended growth biological reactor. Two different direct comparisons have been made in this paper. The first assessed the impact of configuration, comparing a submerged and side stream MBR. The role of the bioreactor in the process was assessed by the comparison of a side stream membrane system configured with and without a bioreactor. Flux decline and rejection were compared for each configuration. Steady state and transient flux modelling were also attempted. Effluent water quality remained below the reuse standards set in all countries around the world for both MBR configurations, but not for simple membrane filtration. Finally, it was found that different types of fouling occurred for each test, and that the biological activity appears to be independent of process configuration.
Document Type: Research Article
Publication date: 2000-01-01
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