Model reduction and robust control of the Activated Sludge Process

Author

David, Robert ; Vande Wouwer, Alain ; Vasel, Jean-Luc ; Queinnec, Isabelle

Author_Institution

Fac. Polytech. de Mons, Service d´Autom., Univ. de Mons, Mons, Belgium

fYear

2007

fDate

2-5 July 2007

Firstpage

4195

Lastpage

4201

Abstract

The Activated Sludge Model no. 1 (ASM1) [6], which is the most widely accepted model of wastewater treatment plants (WWTPs), is used to describe the biotrans-formation processes of nitrification-denitrification. Due to its complexity and nonlinearity, this model is however not well-suited to the design of a control structure. The objective of this work is threefold: (1) to reduce the ASM1, (2) to linearize the reduced model, and (3) to design a robust control algorithm, in order to improve the plant performance and reject disturbances. This procedure is illustrated with data from the COST benchmark [7].

Keywords

control nonlinearities; control system synthesis; reduced order systems; robust control; sludge treatment; wastewater treatment; ASM1; COST benchmark; WWTP; activated sludge model 1; activated sludge process; biotransformation processes; disturbance rejection; model reduction; nitrification-denitrification; nonlinearity; plant performance; reduced model; robust control; robust control algorithm design; wastewater treatment plants; Biological system modeling; Equations; Mathematical model; Meteorology; Reduced order systems; Robust control; Solids;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Conference (ECC), 2007 European

Conference_Location

Kos

Print_ISBN

978-3-9524173-8-6

Type

conf

Filename

7068780