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Life-cycle assessment of decentralized solutions for wastewater treatment in small communities

2021-09Journal article Open access
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dc.contributor.authorLourenço, Nelson
dc.contributor.authorNunes, L.
dc.date.accessioned2021-09-29T08:35:47Z
dc.date.available2021-09-29T08:35:47Z
dc.date.issued2021-09
dc.description.abstractThis study benchmarks vermifiltration (VF) as secondary wastewater treatment in three natured-based decentralized treatment plants using life-cycle assessment. The comparison is justified by the comparatively easier and cheaper operation of VF when compared to more traditional technologies, including small rate infiltration (SRI), constructed wetlands (CW), and activated sludge (AS). Standard life cycle assessment was used and applied to three case-studies located in southern Europe. Material intensity during construction was highest for VF, but impacts during operation were lower, compensating those of the other phases. Impacts during the construction phase far outweigh those of operation and dismantling for facilities using constructed wetlands and activated sludge, when the number of served inhabitants is small, and due to lack of economies of scale. VF used as secondary treatment showed to contribute to reduce the environmental impacts, mainly in constructed wetlands and activated sludge. The replacement of CW by VF seems to bring important environmental benefits in most impact categories, in particular in the construction phase. The replacement by VF in facilities with SRI seems to result in the improvement of some of the impact categories, in particular in the operation phase. As for dismantling, no conclusive results were obtained.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.2166/wst.2021.379pt_PT
dc.identifier.eissn1996-9732
dc.identifier.urihttp://hdl.handle.net/10400.1/17168
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherIWA Publishingpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectActivated sludgept_PT
dc.subjectConstructed wetlandspt_PT
dc.subjectLCApt_PT
dc.subjectSlow rate filtrationpt_PT
dc.subjectVermifiltrationpt_PT
dc.titleLife-cycle assessment of decentralized solutions for wastewater treatment in small communitiespt_PT
dc.title.alternativeAvaliação do ciclo de vida de soluções descentralizadas para tratamento de águas residuais em pequenas comunidadespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleWater Science and Technologypt_PT
person.familyNameLourenço
person.familyNameNunes
person.givenNameNelson
person.givenNameLuís
person.identifier93800
person.identifier.ciencia-id3112-1FCD-6685
person.identifier.orcid0000-0001-5529-7401
person.identifier.orcid0000-0001-5606-970X
person.identifier.ridM-4647-2013
person.identifier.scopus-author-id7102529511
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationaa50934c-5ced-41ce-8396-f4b915452dc4
relation.isAuthorOfPublicationd32d0ac6-6cb6-4f03-afcf-3c80978d469f
relation.isAuthorOfPublication.latestForDiscoveryaa50934c-5ced-41ce-8396-f4b915452dc4

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