Identification and disturbance accommodating control of a fluidized bed anaerobic digester

This paper deals with the identification and control of a fluidized bed ana erobic digester in order to stabilize the production of biogas based on the biological treatment of industrial wine distillery wastewaters. The proces s used is first presented in details. Using a linear model between the Outp ut Gas Flow Rate and the Input Liquid Flow Rate together with the Disturban ce Modeling Principle, a Disturbance Accommodating Controller is designed a nd implemented on a pilot plant. Experimental results are presented and som e conclusions and perspectives are drawn.