Computer simulation of control strategies for optimal anaerobic digestion

Three previously published control strategies for anaerobic digestion were implemented in Simulink/Matlab using Anaerobic Digestion Model No. 1 (ADM1) to model the biological process. The controllers' performance were then simulated and evaluated based on their responses from five different typ...

Full description

Saved in:
Bibliographic Details
Published inWater science and technology Vol. 67; no. 3; pp. 594 - 603
Main Authors STRÖMBERG, S, POSSFELT, M. O, LIU, J
Format Journal Article
LanguageEnglish
Published London International Water Association 01.01.2013
IWA Publishing
Subjects
Ammonia
Anaerobic digestion
Anaerobic processes
Anaerobic treatment
Anaerobiosis
Applied sciences
Biofuels
Biological activity
Bioreactors
Computer Simulation
Control
Controllers
Digestion
Engineering and Technology
Evaluation
Exact sciences and technology
Feedback control
Hydrogen-Ion Concentration
Industrial Biotechnology
Industriell bioteknik
Inflow
Optimization
pH effects
Pollution
Proportional control
Refuse as fuel
Teknik
Variable gain
Waste Management
Water treatment and pollution
Renewable energy
Alternative energy
Numerical simulation
Strategy
ADM1
computer simulation
Biogas
Bioenergy
Biological treatment
Sustainable development
Anaerobic digestion
anaerobic digestion (AD) control
Online AccessGet full text

Cover

More Information
Summary:Three previously published control strategies for anaerobic digestion were implemented in Simulink/Matlab using Anaerobic Digestion Model No. 1 (ADM1) to model the biological process. The controllers' performance were then simulated and evaluated based on their responses from five different types of process scenarios i.e. start-up and steady state performance as well as disturbances from concentration, pH and ammonia in the inflow. Of the three evaluated control strategies, the extremum-seeking variable gain controller gave the best overall performance. However, a proportional feedback controller based on the pH-level, used as a reference case in the evaluation, proved to give as good results as the extremum-seeking variable gain controller but with a lower wear on the pump. It was therefore concluded that a fast proportional control of the reactor pH is a key element for optimally controlling a low-buffering anaerobic digestion process.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.2012.603