Influence of Flow Field on Simultaneous Removal of Nitrogen and Carbon by Membrane Aerated Biofilm Reactor

Nan Zhang; Yun Wu; Hong Wei Zhang; Hui Jia

doi:10.4028/www.scientific.net/AMM.694.372

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 694Influence of Flow Field on Simultaneous Removal of...

Influence of Flow Field on Simultaneous Removal of Nitrogen and Carbon by Membrane Aerated Biofilm Reactor

Abstract:

The characteristics of removing COD and nitrogen simultaneously in membrane aerated biofilm reactor (MABR) was investigated in different packing densities and circulation flow rates. The results show that better removal rates of COD and ammonia nitrogen are found under the packing density of 30%, which removal rates are 76% and 65% respectively. Observations through the electron microscopic and CCD camera reveal that the biofilm have a layered structure and the stable biofilm thickness is 1.652 mm. When the circulation flow rate is 7.62 L·min^-1, the highest removal rate of total nitrogen is 70%, meanwhile, the efficient mass transfer of the biofilm is ensured.

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Periodical:

Applied Mechanics and Materials (Volume 694)

Pages:

372-376

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.694.372

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Online since:

November 2014

Authors:

Nan Zhang*, Yun Wu, Hong Wei Zhang, Hui Jia

Keywords:

Carbon and Nitrogen Removal, Circulation Flow Rate, MABR, Packing Density

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* - Corresponding Author

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