A comprehensive assessment of energy efficiency of wastewater treatment plants: An efficiency analysis tree approach

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dc.contributor.authorMaziotis, Alexandros
dc.contributor.authorSala-Garrido, Ramon
dc.contributor.authorMocholi-Arce, Manuel
dc.contributor.authorMolinos-Senante, Maria
dc.contributor.otherCEDEUS (Chile)
dc.date.accessioned2025-01-20T20:10:57Z
dc.date.available2025-01-20T20:10:57Z
dc.date.issued2023
dc.description.abstractWastewater treatment plants (WWTPs) are energy intensive facilities. Controlling energy use in WWTPs could bring substantial benefits to people and environment. Understanding how energy efficient the wastewater treatment process is and what drives efficiency would allow treating wastewater in a more sustainable way. In this study, we employed the efficiency analysis trees approach, that combines machine learning and linear programming techniques, to estimate energy efficiency of wastewater treatment process. The findings indicated that considerable energy inefficiency among WWTPs in Chile existed. The mean energy efficiency was 0.287 suggesting that energy use should cut reduce by 71.3 % to treat the same volume of wastewater. This was equivalent to a reduction in energy use by 0.40 kWh/m3 on average. Moreover, only 4 out of 203 assessed WWTPs (1.97 %) were identified as energy efficient. It was also found that the age of treatment plant and type of secondary technology played an important role in explaining energy efficiency variations among WWTPs.
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.scitotenv.2023.163539
dc.identifier.eissn1879-1026
dc.identifier.issn0048-9697
dc.identifier.urihttps://doi.org/10.1016/j.scitotenv.2023.163539
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/92108
dc.identifier.wosidWOS:001000552400001
dc.language.isoen
dc.revistaScience of the total environment
dc.rightsacceso restringido
dc.subjectEnergy efficiency
dc.subjectEnergy savings
dc.subjectRegression trees
dc.subjectLinear programming
dc.subjectBootstrap regression
dc.subjectWastewater treatment plants
dc.subject.ods09 Industry, Innovation and Infrastructure
dc.subject.odspa09 Industria, innovación e infraestructura
dc.titleA comprehensive assessment of energy efficiency of wastewater treatment plants: An efficiency analysis tree approach
dc.typeartículo
dc.volumen885
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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