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

Detalhes bibliográficos
Autor(a) principal: Lourenço, Nelson
Data de Publicação: 2021
Outros Autores: Nunes, L.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.1/17168
Resumo: This 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.
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spelling Life-cycle assessment of decentralized solutions for wastewater treatment in small communitiesAvaliação do ciclo de vida de soluções descentralizadas para tratamento de águas residuais em pequenas comunidadesActivated sludgeConstructed wetlandsLCASlow rate filtrationVermifiltrationThis 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.IWA PublishingSapientiaLourenço, NelsonNunes, L.2021-09-29T08:35:47Z2021-092021-09-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.1/17168eng10.2166/wst.2021.3791996-9732info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-24T10:29:17Zoai:sapientia.ualg.pt:10400.1/17168Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:07:09.530770Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Life-cycle assessment of decentralized solutions for wastewater treatment in small communities
Avaliação do ciclo de vida de soluções descentralizadas para tratamento de águas residuais em pequenas comunidades
title Life-cycle assessment of decentralized solutions for wastewater treatment in small communities
spellingShingle Life-cycle assessment of decentralized solutions for wastewater treatment in small communities
Lourenço, Nelson
Activated sludge
Constructed wetlands
LCA
Slow rate filtration
Vermifiltration
title_short Life-cycle assessment of decentralized solutions for wastewater treatment in small communities
title_full Life-cycle assessment of decentralized solutions for wastewater treatment in small communities
title_fullStr Life-cycle assessment of decentralized solutions for wastewater treatment in small communities
title_full_unstemmed Life-cycle assessment of decentralized solutions for wastewater treatment in small communities
title_sort Life-cycle assessment of decentralized solutions for wastewater treatment in small communities
author Lourenço, Nelson
author_facet Lourenço, Nelson
Nunes, L.
author_role author
author2 Nunes, L.
author2_role author
dc.contributor.none.fl_str_mv Sapientia
dc.contributor.author.fl_str_mv Lourenço, Nelson
Nunes, L.
dc.subject.por.fl_str_mv Activated sludge
Constructed wetlands
LCA
Slow rate filtration
Vermifiltration
topic Activated sludge
Constructed wetlands
LCA
Slow rate filtration
Vermifiltration
description This 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.
publishDate 2021
dc.date.none.fl_str_mv 2021-09-29T08:35:47Z
2021-09
2021-09-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.1/17168
url http://hdl.handle.net/10400.1/17168
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.2166/wst.2021.379
1996-9732
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv IWA Publishing
publisher.none.fl_str_mv IWA Publishing
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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