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Lookup NU author(s): Harry LaingORCiD, Dr Chris O'MalleyORCiD, Dr Mark Willis
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
In this paper, we propose a realistic model for gas distribution of an advanced municipal wastewater treatment works and through minimisation of the total cost of gas distribution we perform Retrospective Optimisation (RO) using historical plant data. This site is the first in the UK with a mixed operational strategy for biomethane produced on site: to burn in CHP (Combined Heat and Power) engines to create electricity, burn in Steam Boilers for onsite steam use or inject the biomethane into the national grid. In addition, Natural Gas can be imported to make up shortfalls in biomethane if required. Implemented using a novel mixed integer linear programming (MILP) approach, to ensure a fast and robust solution, our results indicate the plant operated optimally within accepted tolerance 98% of the time. However, improving plant robustness (such as reducing unexpected breakdown incidents) could yield a significant increase in gas revenue of 7.8%.
Author(s): Laing H, O'Malley CJ, Browne A, Rutherford T, Baines T, Willis MJ
Publication type: Article
Publication status: Published
Journal: Water Science & Technology
Year: 2020
Volume: 82
Issue: 12
Pages: 2761-2775
Print publication date: 15/12/2020
Online publication date: 04/08/2020
Acceptance date: 22/07/2020
Date deposited: 26/08/2020
ISSN (print): 0273-1223
ISSN (electronic): 1996-9732
Publisher: IWA Publishing
URL: https://doi.org/10.2166/wst.2020.363
DOI: 10.2166/wst.2020.363
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