The α-factor has the greatest impact on the calculation of the required standard oxygen transfer rate (SOTR) in activated sludge systems equipped with submerged aeration systems. Knowing the dependencies of the α-factor leads to a better design of the aeration devices and, consequently, to a more efficient use of aeration energy. Applying the current state of knowledge about oxygen transfer leads to the conclusion that, in contrast to current opinion, simultaneous aerobic stabilization requires the same SOTR as conventional activated sludge systems with advanced nutrient removal, even though a higher organic load is degraded.
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Research Article| June 01 2011
Oxygen transfer in activated sludge – new insights and potentials for cost saving
Water Sci Technol (2011) 63 (12): 3034–3038.
J. Henkel, P. Cornel, M. Wagner; Oxygen transfer in activated sludge – new insights and potentials for cost saving. Water Sci Technol 1 June 2011; 63 (12): 3034–3038. doi: https://doi.org/10.2166/wst.2011.607
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