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Dynamic modeling of activated-sludge process. 1. Nonlinear kinetics models

J. Derco, M. Králik, M. Hutňan, and P. Gubová

Department of Environmental Chemistry and Technology, Faculty of Chemical Technology, Slovak Technical University, CS-812 37 Bratislava

 

Abstract: This paper deals with experimental investigation and mathematical modelling of the dynamic behaviour of activated sludge process. A sim­plified mathematical model based on substrate and biomass material balan­ces around aerated tank was derived and verified experimentally for the transient load of a substrate concentration. This model was tested by means of the step change of substrate concentration in the feed. The set of Mi­chaelis—Menten equations of substrate utilization and Monod equation of microbiological growth was found not to be descriptive for the system response. The calculated COD and biomass concentrations profiles using the modified Monod equation provided better fit with those obtained experi­mentally.

Full paper in Portable Document Format: 443a409.pdf

 

Chemical Papers 44 (3) 409–420 (1990)

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