Adaptive Control of a Denitrifying Biofilter with Application of the Substrate Consumption Rate

This paper deals with the generalised approach to the adaptive control of a denitrifying biofilter with application of the substrate consumption rate. It is shown how to derive the control law on the basis of the simplified form of the dynamical equation written for the controlled variable with the possibly minimal knowledge about the process kinetics and components. In this equation all reaction rates are replaced by the only one time varying parameter (substrate consumption rate) and its value is estimated on-line by the recursive least-squares method at the biofilter outlet to ensure the adaptability of the control law. The suggested methodology is evaluated by simulation with application to the complete nonlinear model of the biofilter. Copyright  2002 IFAC