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Multiobjective Optimization in Sewer Network Design to Improve Wastewater Quality

Heydarzadeh, Reza LU ; Tabesh, Massoud and Scholz, Miklas LU (2019) In Journal of Pipeline Systems Engineering and Practice 10(4).
Abstract

Sewers that constitute the main part of wastewater systems can be used as pretreatment units of wastewater treatment plants. The authors aim to increase the treatment efficiency of sewers by optimization. A hydraulic model is written and validated. A quality calculation section is added to the model according to the Wastewater Aerobic/Anaerobic Transformations in Sewers (WATS) method, and it is calibrated and verified using the data of a real wastewater transition line. An optimization engine is coupled to the proposed model. The new model can simulate the hydraulic and quality parameters of a sewer network and optimize it. Six objective functions and a general one with their decision variables were assessed. A predesigned wastewater... (More)

Sewers that constitute the main part of wastewater systems can be used as pretreatment units of wastewater treatment plants. The authors aim to increase the treatment efficiency of sewers by optimization. A hydraulic model is written and validated. A quality calculation section is added to the model according to the Wastewater Aerobic/Anaerobic Transformations in Sewers (WATS) method, and it is calibrated and verified using the data of a real wastewater transition line. An optimization engine is coupled to the proposed model. The new model can simulate the hydraulic and quality parameters of a sewer network and optimize it. Six objective functions and a general one with their decision variables were assessed. A predesigned wastewater collection network was used for the optimization of five scenarios. The results can be used to identify optimization priorities at the network design stage. Results showed that an increase in the removal of organic matter within the sewer can be achieved, but its other performance indices may worsen. Prioritization of objectives according to stakeholder views is required.

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Please use this url to cite or link to this publication:
author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Design stage, Dissolved oxygen, Optimization, Performance index, Quality model, Treatment capacity
in
Journal of Pipeline Systems Engineering and Practice
volume
10
issue
4
article number
04019037
publisher
ASCE
external identifiers
  • scopus:85072250921
ISSN
1949-1190
DOI
10.1061/(ASCE)PS.1949-1204.0000416
language
English
LU publication?
yes
id
e9e0e7d1-7ec7-44b0-bb34-530a86cf3b3e
date added to LUP
2019-09-27 14:40:36
date last changed
2022-04-02 21:56:05
@article{e9e0e7d1-7ec7-44b0-bb34-530a86cf3b3e,
  abstract     = {{<p>Sewers that constitute the main part of wastewater systems can be used as pretreatment units of wastewater treatment plants. The authors aim to increase the treatment efficiency of sewers by optimization. A hydraulic model is written and validated. A quality calculation section is added to the model according to the Wastewater Aerobic/Anaerobic Transformations in Sewers (WATS) method, and it is calibrated and verified using the data of a real wastewater transition line. An optimization engine is coupled to the proposed model. The new model can simulate the hydraulic and quality parameters of a sewer network and optimize it. Six objective functions and a general one with their decision variables were assessed. A predesigned wastewater collection network was used for the optimization of five scenarios. The results can be used to identify optimization priorities at the network design stage. Results showed that an increase in the removal of organic matter within the sewer can be achieved, but its other performance indices may worsen. Prioritization of objectives according to stakeholder views is required.</p>}},
  author       = {{Heydarzadeh, Reza and Tabesh, Massoud and Scholz, Miklas}},
  issn         = {{1949-1190}},
  keywords     = {{Design stage; Dissolved oxygen; Optimization; Performance index; Quality model; Treatment capacity}},
  language     = {{eng}},
  number       = {{4}},
  publisher    = {{ASCE}},
  series       = {{Journal of Pipeline Systems Engineering and Practice}},
  title        = {{Multiobjective Optimization in Sewer Network Design to Improve Wastewater Quality}},
  url          = {{http://dx.doi.org/10.1061/(ASCE)PS.1949-1204.0000416}},
  doi          = {{10.1061/(ASCE)PS.1949-1204.0000416}},
  volume       = {{10}},
  year         = {{2019}},
}