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Dynamic evaluation of integrated control strategies for enhanced nitrogen removal in activated sludge processes

Yong, M. ; Yongzhen, P. and Jeppsson, Ulf LU (2006) In Control Engineering Practice 14(11). p.1269-1278
Abstract
In this paper, six different strategies for integrated control of nitrate recirculation flow rate and external carbon addition in a predenitrifying biological wastewater treatment system are proposed and evaluated using the COST simulation benchmark. The proposed control strategies consist of two or three feedback control loops, which manipulate the nitrate recirculation and the carbon dosage flow rates in an integrated manner, such that the consumption of external carbon is minimized while the nitrate discharge limits are met. The control systems require measurements of nitrate concentrations at the end of both the anoxic and the aerobic zones. A number of simulations are performed and the results show that the control strategies can... (More)
In this paper, six different strategies for integrated control of nitrate recirculation flow rate and external carbon addition in a predenitrifying biological wastewater treatment system are proposed and evaluated using the COST simulation benchmark. The proposed control strategies consist of two or three feedback control loops, which manipulate the nitrate recirculation and the carbon dosage flow rates in an integrated manner, such that the consumption of external carbon is minimized while the nitrate discharge limits are met. The control systems require measurements of nitrate concentrations at the end of both the anoxic and the aerobic zones. A number of simulations are performed and the results show that the control strategies can maintain the designated effluent quality in the presence of external disturbances, while obtaining excellent results in terms of consumption of external carbon, as well as meeting the general plant performance and controller criteria as defined by the benchmark group. (c) 2005 Elsevier Ltd. All rights reserved. (Less)
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author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
pre-denitrification process, recirculation, nitrate, external carbon addition, benchmark simulation model, control, wastewater
in
Control Engineering Practice
volume
14
issue
11
pages
1269 - 1278
publisher
Elsevier
external identifiers
  • wos:000240762500001
  • scopus:33745470334
ISSN
0967-0661
DOI
10.1016/j.conengprac.2005.06.018
language
English
LU publication?
yes
id
8db87d47-2fae-428b-b589-ff8915c8baaf (old id 392788)
date added to LUP
2016-04-01 11:50:49
date last changed
2020-12-08 05:12:59
@article{8db87d47-2fae-428b-b589-ff8915c8baaf,
  abstract     = {In this paper, six different strategies for integrated control of nitrate recirculation flow rate and external carbon addition in a predenitrifying biological wastewater treatment system are proposed and evaluated using the COST simulation benchmark. The proposed control strategies consist of two or three feedback control loops, which manipulate the nitrate recirculation and the carbon dosage flow rates in an integrated manner, such that the consumption of external carbon is minimized while the nitrate discharge limits are met. The control systems require measurements of nitrate concentrations at the end of both the anoxic and the aerobic zones. A number of simulations are performed and the results show that the control strategies can maintain the designated effluent quality in the presence of external disturbances, while obtaining excellent results in terms of consumption of external carbon, as well as meeting the general plant performance and controller criteria as defined by the benchmark group. (c) 2005 Elsevier Ltd. All rights reserved.},
  author       = {Yong, M. and Yongzhen, P. and Jeppsson, Ulf},
  issn         = {0967-0661},
  language     = {eng},
  number       = {11},
  pages        = {1269--1278},
  publisher    = {Elsevier},
  series       = {Control Engineering Practice},
  title        = {Dynamic evaluation of integrated control strategies for enhanced nitrogen removal in activated sludge processes},
  url          = {http://dx.doi.org/10.1016/j.conengprac.2005.06.018},
  doi          = {10.1016/j.conengprac.2005.06.018},
  volume       = {14},
  year         = {2006},
}