Abstract
A criterion is proposed for evaluating biomass age in the activated sludge treatment process in which the biological reaction may be likened to completely mixed reactors operated in series. Expressions for a single-unit reactor have been deduced from the general expression, and these are shown to be equivalent to those reported in the art, and for plug flow reactor.
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Annesini, M.C. Evaluation of biomass age in activated sludge processes. Water Air Soil Pollut 19, 55–61 (1983). https://doi.org/10.1007/BF00176795
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DOI: https://doi.org/10.1007/BF00176795