The matrix format for the presentation of biokinetic models is explained with a simple model and expanded for the ‘Activated Sludge Model No. 1' of the IAWPRC Task Group for Mathematical Modelling for Design and Operation of Biological Wastewater treatment. With the aid of a simulation program a complex activated sludge model which includes two organic substrates and nitrification is developed stepwise and compared to experimental results.

Activated sludge process, mathematical modelling, simulation, nitrification, hydrolysis, lysis, ‘Activated Sludge Model No. 1'
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© IWA Publishing 1991
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