Advanced

Computer simulation of control strategies for optimal anaerobic digestion.

Strömberg, Sten LU ; Possfelt, M O and Liu, Jing LU (2013) In Water Science and Technology 67(3). p.594-603
Abstract
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... (More)
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. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Water Science and Technology
volume
67
issue
3
pages
594 - 603
publisher
IWA Publishing
external identifiers
  • wos:000315194500018
  • pmid:23202565
  • scopus:84874043511
ISSN
0273-1223
DOI
10.2166/wst.2012.603
language
English
LU publication?
yes
id
22ea7d7c-7412-4d15-aaee-f122c38f5d37 (old id 3347722)
date added to LUP
2013-01-07 12:05:28
date last changed
2019-02-20 05:18:59
@article{22ea7d7c-7412-4d15-aaee-f122c38f5d37,
  abstract     = {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.},
  author       = {Strömberg, Sten and Possfelt, M O and Liu, Jing},
  issn         = {0273-1223},
  language     = {eng},
  number       = {3},
  pages        = {594--603},
  publisher    = {IWA Publishing},
  series       = {Water Science and Technology},
  title        = {Computer simulation of control strategies for optimal anaerobic digestion.},
  url          = {http://dx.doi.org/10.2166/wst.2012.603},
  volume       = {67},
  year         = {2013},
}