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Article

Performance Assessment System for Energy Efficiency in Wastewater Systems

1
Urban Water Unit, National Laboratory for Civil Engineering, LNEC, Av. Brasil 101, 1700-066 Lisbon, Portugal
2
CERIS, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
*
Author to whom correspondence should be addressed.
Academic Editor: Enedir Ghisi
Water 2021, 13(13), 1807; https://doi.org/10.3390/w13131807
Received: 1 June 2021 / Revised: 24 June 2021 / Accepted: 25 June 2021 / Published: 29 June 2021
(This article belongs to the Special Issue Infrastructure Asset Management of Urban Water Systems)
Performance assessment is essential to effectively evaluate and monitor the activity of water utilities, support decision making, and encourage continuous improvement. Performance assessment systems (PAS), covering several service objectives and criteria, have been successfully applied in water supply and wastewater systems. Tailored approaches focusing on the assessment of the energy use and efficiency in wastewater systems are still limited. This paper aims at the development and demonstration of a comprehensive PAS for energy efficiency, tailored for wastewater systems, incorporating criteria related to energy consumption, operation and maintenance (O&M) costs, and environmental impacts, such as untreated discharges and greenhouse gases emissions, among others. Management and control of excessive or undue inflows to these systems is specifically addressed by several novel criteria and metrics. The proposed PAS should be adapted by each utility to be aligned with the objectives of the organisation and with the implemented asset management strategy. The proposed approach and the resulting consolidated PAS are thoroughly described. Results from the application of the PAS to several Portuguese utilities are discussed. This PAS aims at contributing to a reliable and replicable process to assess energy efficiency in wastewater systems and to encourage a more rational energy management. View Full-Text
Keywords: energy efficiency; performance assessment systems (PAS); performance metrics; undue inflows; wastewater systems energy efficiency; performance assessment systems (PAS); performance metrics; undue inflows; wastewater systems
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MDPI and ACS Style

Jorge, C.; Almeida, M.d.C.; Covas, D. Performance Assessment System for Energy Efficiency in Wastewater Systems. Water 2021, 13, 1807. https://doi.org/10.3390/w13131807

AMA Style

Jorge C, Almeida MdC, Covas D. Performance Assessment System for Energy Efficiency in Wastewater Systems. Water. 2021; 13(13):1807. https://doi.org/10.3390/w13131807

Chicago/Turabian Style

Jorge, Catarina, Maria d.C. Almeida, and Dídia Covas. 2021. "Performance Assessment System for Energy Efficiency in Wastewater Systems" Water 13, no. 13: 1807. https://doi.org/10.3390/w13131807

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