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Biomass effects on oxygen transfer in membrane bioreactors.

By Eve Germain, F. Nelles, A. Drews, P. Pearce, M. Kraume, E. Reid, Simon J. Judd and Tom Stephenson

Abstract

Ten biomass samples from both municipal and industrial pilot and full scale submerged membrane bioreactors (MBRs) with mixed liquor suspended solids concentrations (MLSS) ranging from 7.2 to 30.2 g L−1 were studied at six air-flow rates (0.7, 1.3, 2.3, 3, 4.4 and 6 m3 m−3 h−1). Statistical analyses were applied to identify the relative impacts of the various bulk biomass characteristics on oxygen transfer. Of the biomass characteristics studied, only solids concentration (correlated with viscosity), the carbohydrate fraction of the EPS (EPSc) and the chemical oxygen demand (COD) concentration of the SMP (SMPCOD) were found to affect the oxygen transfer parameters kLa20 (the oxygen transfer coefficient) and α-factor. The relative influence on kLa20 was MLSS>aeration>EPSc>SMPCOD and on α-factor was MLSS>SMPCOD>EPSc>aeration. Both kLa20 and α-factor increased with increasing aeration and EPSc and decreased with increasing MLSS and SMPCOD. MLSS was found to be the main parameter controlling the oxygen transfer

Topics: Oxygen transfer, MBR, Biomass, Aeration
Publisher: Elsevier
Year: 2007
DOI identifier: 10.1016/j.watres.2006.10.020
OAI identifier: oai:dspace.lib.cranfield.ac.uk:1826/2878
Provided by: Cranfield CERES

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Citations

  1. (2001). Aeration-A wastewater treatment process." Water Environment Federation, doi
  2. (2002). Aeration: principles and practice."
  3. Aerobic Domestic Waste-Water Treatment in a Pilot-Plant With Complete Sludge Retention by Cross-Flow Filtration. doi
  4. (2005). Biomass characteristics and membrane aeration: Toward a better understanding of membrane fouling in submerged membrane bioreactors (MBRs). doi
  5. (2005). Biomass characteristics, aeration and oxygen transfer in membrane bioreactors: their interrelations explained by a review of aerobic biological processes. Re/views in Environmental Science and Bio/Technology, doi
  6. (2001). Characterization and improvement of oxygen transfer in pilot plant external air-lift bioreactor for mycelial biomass production.
  7. (2003). Charakterisierung von belebtem Schlamm in Membranbelebungsreaktoren zur Abwasserreinigung,
  8. (1956). Colorimetric method for determination of sugars and related substances. doi
  9. (1999). Comparison of extraction methods in quantifying extracellular polymers in biofilms. doi
  10. (2002). Fouling control in activated sludge submerged hollow fiber membrane bioreactors. doi
  11. (1992). Gas holdup and volumetric liquid-phase mass transfer coefficient in a gel-particle suspended bubble column with draught tube. doi
  12. (1992). Gas-liquid oxygen transfer characteristics in an aerobic submerged biofilter for the wastewater treatment. doi
  13. (1987). Hydrodynamics, axial dispersion and gas-liquid oxygen transfer in an airlift-loop bioreactor with three-phase flow.
  14. (1999). Introduction - What are bacterial extracellular polymeric substances? In: Wingender, doi
  15. (2003). Investigation of oxygen transfer rates in full scale membrane bioreactors.
  16. (1998). Membrane filtration characteristics in membranecoupled activated sludge system - the effect of physiological states of activated sludge on membrane fouling. doi
  17. (1998). Multivariate data analysis." Prentice-Hall International Inc., Upper Saddle River,
  18. (2005). Nutrients removal in MBRs for municipal wastewater treatment. doi
  19. (2002). Off-line particle size analysis of digested sludge. doi
  20. (2002). Optimal operation for timely adaptation of activated sludge plants to changes in surfactant composition of wastewater,
  21. (2001). Oxygen mass transfer in a high solids loading three-phase internal-loop airlift reactor. doi
  22. (2000). Oxygen transfer and uptake rates during xanthan gum production. doi
  23. (2003). Oxygen transfer into activated sludge with high MLSS concentrations.
  24. (2003). Sludge characteristics and their contribution to microfiltration in submerged membrane bioreactors. doi
  25. (1998). Standards methods for the examination of water and wastewater." American Public Health Association, American Water Works Association and Water Environment Federation,
  26. (2001). The Dutch contribution to the MBR development in perspective.
  27. (2001). The Membrane Coupled-Activated Sludge Process in Municipal Wastewater Treatment." doi
  28. (2001). The studies on the oxygen mass transfer coefficient in a bioreactor. doi
  29. (1995). Transfer of O2 from air to mineral slurries in a rushton turbine agitated tank. doi
  30. (2001). Volumetric oxygen transfer coefficients (kLa) in batch cultivations involving non-Newtonian broths. doi

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