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Balancing effluent quality, economic cost and greenhouse gas emissions during the evaluation of (plant-wide) control/operational strategies in WWTPs.

Flores, Xavier LU ; Arnell, Magnus LU ; Amerlinck, Youri ; Corominas, Lluís ; Gernaey, Krist V ; Guo, Lisha ; Lindblom, Erik LU ; Nopens, Ingmar ; Porro, Jose and Shaw, Andy , et al. (2013) In Science of the Total Environment 466-467C. p.616-624
Abstract
The objective of this paper was to show the potential additional insight that result from adding greenhouse gas (GHG) emissions to plant performance evaluation criteria, such as effluent quality (EQI) and operational cost (OCI) indices, when evaluating (plant-wide) control/operational strategies in wastewater treatment plants (WWTPs). The proposed GHG evaluation is based on a set of comprehensive dynamic models that estimate the most significant potential on-site and off-site sources of CO2, CH4 and N2O. The study calculates and discusses the changes in EQI, OCI and the emission of GHGs as a consequence of varying the following four process variables: (i) the set point of aeration control in the activated sludge section; (ii) the removal... (More)
The objective of this paper was to show the potential additional insight that result from adding greenhouse gas (GHG) emissions to plant performance evaluation criteria, such as effluent quality (EQI) and operational cost (OCI) indices, when evaluating (plant-wide) control/operational strategies in wastewater treatment plants (WWTPs). The proposed GHG evaluation is based on a set of comprehensive dynamic models that estimate the most significant potential on-site and off-site sources of CO2, CH4 and N2O. The study calculates and discusses the changes in EQI, OCI and the emission of GHGs as a consequence of varying the following four process variables: (i) the set point of aeration control in the activated sludge section; (ii) the removal efficiency of total suspended solids (TSS) in the primary clarifier; (iii) the temperature in the anaerobic digester; and (iv) the control of the flow of anaerobic digester supernatants coming from sludge treatment. Based upon the assumptions built into the model structures, simulation results highlight the potential undesirable effects of increased GHG production when carrying out local energy optimization of the aeration system in the activated sludge section and energy recovery from the AD. Although off-site CO2 emissions may decrease, the effect is counterbalanced by increased N2O emissions, especially since N2O has a 300-fold stronger greenhouse effect than CO2. The reported results emphasize the importance and usefulness of using multiple evaluation criteria to compare and evaluate (plant-wide) control strategies in a WWTP for more informed operational decision making. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Science of the Total Environment
volume
466-467C
pages
616 - 624
publisher
Elsevier
external identifiers
  • pmid:23959217
  • wos:000330491600066
  • scopus:84882794987
  • pmid:23959217
ISSN
1879-1026
DOI
10.1016/j.scitotenv.2013.07.046
language
English
LU publication?
yes
id
247b90eb-89b0-4b51-bc6a-403adc1a9d8c (old id 4005505)
date added to LUP
2016-04-01 11:09:24
date last changed
2022-04-20 17:33:47
@article{247b90eb-89b0-4b51-bc6a-403adc1a9d8c,
  abstract     = {{The objective of this paper was to show the potential additional insight that result from adding greenhouse gas (GHG) emissions to plant performance evaluation criteria, such as effluent quality (EQI) and operational cost (OCI) indices, when evaluating (plant-wide) control/operational strategies in wastewater treatment plants (WWTPs). The proposed GHG evaluation is based on a set of comprehensive dynamic models that estimate the most significant potential on-site and off-site sources of CO2, CH4 and N2O. The study calculates and discusses the changes in EQI, OCI and the emission of GHGs as a consequence of varying the following four process variables: (i) the set point of aeration control in the activated sludge section; (ii) the removal efficiency of total suspended solids (TSS) in the primary clarifier; (iii) the temperature in the anaerobic digester; and (iv) the control of the flow of anaerobic digester supernatants coming from sludge treatment. Based upon the assumptions built into the model structures, simulation results highlight the potential undesirable effects of increased GHG production when carrying out local energy optimization of the aeration system in the activated sludge section and energy recovery from the AD. Although off-site CO2 emissions may decrease, the effect is counterbalanced by increased N2O emissions, especially since N2O has a 300-fold stronger greenhouse effect than CO2. The reported results emphasize the importance and usefulness of using multiple evaluation criteria to compare and evaluate (plant-wide) control strategies in a WWTP for more informed operational decision making.}},
  author       = {{Flores, Xavier and Arnell, Magnus and Amerlinck, Youri and Corominas, Lluís and Gernaey, Krist V and Guo, Lisha and Lindblom, Erik and Nopens, Ingmar and Porro, Jose and Shaw, Andy and Snip, Laura and Vanrolleghem, Peter A and Jeppsson, Ulf}},
  issn         = {{1879-1026}},
  language     = {{eng}},
  pages        = {{616--624}},
  publisher    = {{Elsevier}},
  series       = {{Science of the Total Environment}},
  title        = {{Balancing effluent quality, economic cost and greenhouse gas emissions during the evaluation of (plant-wide) control/operational strategies in WWTPs.}},
  url          = {{http://dx.doi.org/10.1016/j.scitotenv.2013.07.046}},
  doi          = {{10.1016/j.scitotenv.2013.07.046}},
  volume       = {{466-467C}},
  year         = {{2013}},
}