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The New Way to Meet Low Level Nitrogen Requirements: Pilot Testing Results from a Membrane Biofilm Reactor

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Nutrient removal processes are more frequently implemented in wastewater and water reclamation treatment trains to ensure compliance with increasingly stringent regulations. Conventional nitrogen removal processes are expensive and there is a need for new treatment processes to ensure that future regulations can be addressed in a cost effective matter. This paper presents the results of a revolutionary new treatment process; called a membrane biofilm reactor (MBfR), for meeting strict nitrogen requirements. An MBfR uses a membrane to deliver H2 gas as an electron donor to autotrophic bacteria growing on the membrane surface that reduce contaminant oxyanions (e.g. nitrate, nitrite, etc.). This study confirmed that the MBfR process is capable of achieving low nitrogen concentrations (TIN < 1 mg/L) in a reliable manner (e.g. > 70 days). Additionally, this pilot study investigated operating parameters to determine the maximum loading rate while minimizing energy consumption.

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864709793955041

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 These proceedings are not peer reviewed.

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