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Performance of bench-scale membrane bioreactor under real work conditions using pure oxygen: viscosity and oxygen transfer analysis

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Abstract

Pure oxygen to supply the aerobic condition was used in the performance of a bench-scale submerged membrane bioreactor (MBR). The pilot plant was located in the wastewater treatment plant of the city of Granada (Spain) and the experimental work was divided into two stages (Unsteady state and steady state conditions). Operation parameters (MLSS, MLVSS and dissolved oxygen concentration) and physical characteristics (temperature, conductivity, pH, COD and BOD5) were daily monitored. The results showed the capacity of the MBR systems to remove organic material under a hydraulic retention time of 18.46 h and sludge retention time of 18.6 days. Therefore, Viscosity of the sludge and αkLa-factor of the aeration, were determinate in the steady stage condition to understand the behavior of the system when pure oxygen has been used to supply the aerobic conditions of the MBR system showed an alpha-factor of 0.238 when the viscosity of the system was 4.04 Cp.

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Acknowledgments

This research was funded by Air Liquide Company and it was also made possible, thanks to the participation of the EMASAGRA.

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Authors and Affiliations

  1. Department of Civil Engineering, E.T.S.I.C.C.P., University of Granada, Campus de Fuentenueva s/n, 18071, Granada, Spain

    F. A. Rodríguez, E. Hontoria & J. M. Poyatos

  2. Institute of Water Research, University of Granada, 18071, Granada, Spain

    F. A. Rodríguez, M. V. Martínez-Toledo, J. González-López, E. Hontoria & J. M. Poyatos

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  1. F. A. Rodríguez
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  2. M. V. Martínez-Toledo
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  3. J. González-López
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  4. E. Hontoria
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  5. J. M. Poyatos
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Correspondence to J. M. Poyatos.

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Rodríguez, F.A., Martínez-Toledo, M.V., González-López, J. et al. Performance of bench-scale membrane bioreactor under real work conditions using pure oxygen: viscosity and oxygen transfer analysis. Bioprocess Biosyst Eng 33, 885–892 (2010). https://doi.org/10.1007/s00449-010-0411-0

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  • DOI: https://doi.org/10.1007/s00449-010-0411-0

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