Robust interval-based regulation for anaerobic digestion processes

A robust regulation law is applied to the stabilization of a class of biochemical reactors exhibiting partially known highly nonlinear dynamic behavior. An uncertain environment with the presence of unknown inputs is considered. Based on some structural and operational conditions, this regulation la...

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Bibliographic Details
Published in:Water science and technology 2005-01, Vol.52 (1-2), p.449-456
Main Authors: Alcaraz-González, V, Harmand, J, Rapaport, A, Steyer, J P, González-Alvarez, V, Pelayo-Ortiz, C
Format: Article
Language:English
Subjects:
Anaerobic digestion
Anaerobic processes
Anaerobic treatment
Automatic Control Engineering
Bacteria, Anaerobic - metabolism
Biogas
Bioreactors
Biotechnology
Chemical oxygen demand
Computer Science
Digestion
Dilution
Hypotheses
Laws
Life Sciences
Models, Biological
Ordinary differential equations
Uncertainty
Vitaceae
Waste Disposal, Fluid
Wastewater
Wastewater treatment
Water treatment
Wine
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Summary:A robust regulation law is applied to the stabilization of a class of biochemical reactors exhibiting partially known highly nonlinear dynamic behavior. An uncertain environment with the presence of unknown inputs is considered. Based on some structural and operational conditions, this regulation law is shown to exponentially stabilize the aforementioned bioreactors around a desired set-point. This approach is experimentally applied and validated on a pilot-scale (1 m3) anaerobic digestion process for the treatment of raw industrial wine distillery wastewater where the objective is the regulation of the chemical oxygen demand (COD) by using the dilution rate as the manipulated variable. Despite large disturbances on the input COD and state and parametric uncertainties, this regulation law gave excellent performances leading the output COD towards its set-point and keeping it inside a pre-specified interval.
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.2005.0552