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Mechanical Cleaning Process for Enhanced MBR-Performance

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Abstract:

Membrane bioreactors (MBRs) for wastewater treatment offer the advantages of superior effluent quality and a small footprint. The disadvantage is frequent membrane cleaning caused by membrane fouling that require higher labor and chemical demands when compared to conventional activated sludge process (CASP). The goal of this investigation was to operate MBR systems without chemicals, allowing a sustainable process at low costs. Microdyn-Nadir in cooperation with Darmstadt University has developed a unique non-chemical mechanical cleaning process (MCP).

The MCP-process offers an operation of the MBR-Module with high flux rates up to 40 L/(m2┬Ěh) (23.6 gfd) continuous operation. For more than 20 months (test ongoing) no chemical cleanings have been performed. This process also allows for a significant flux increase of about 30 % in comparison to a standard MBR-application without MCP.

Keywords: Chemicals; Cleaning; Granulates; MBR; Membrane Bio Reactor; Particles

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864709793952819

Publication date: January 1, 2009

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  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

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