A pilot study combining ultrafiltration with ozonation for the treatment of secondary urban wastewater: organic micropollutants, microbial load and biological effects
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.14/33069 |
Resumo: | Ozonation followed by ultrafiltration (O3 + UF) was employed at pilot scale for the treatment of secondary urban wastewater, envisaging its safe reuse for crop irrigation. Chemical contaminants of emerging concern (CECs) and priority substances (PSs), microbial load, estrogenic activity, cell viability and cellular metabolic activity were measured before and immediately after O3 + UF treatment. The microbial load was also evaluated after one-week storage of the treated water to assess potential bacteria regrowth. Among the organic micropollutants detected, only citalopram and isoproturon were not removed below the limit of quantification. The treatment was also effective in the reduction in the bacterial loads considering current legislation in water quality for irrigation (i.e., in terms of enterobacteria and nematode eggs). However, after seven days of storage, total heterotrophs regrew to levels close to the initial, with the concomitant increase in the genes 16S rRNA and intI1. The assessment of biological effects revealed similar water quality before and after treatment, meaning that O3 + UF did not produce detectable toxic by-products. Thus, the findings of this study indicate that the wastewater treated with this technology comply with the water quality standards for irrigation, even when stored up to one week, although improvements must be made to minimise microbial overgrowth. |
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A pilot study combining ultrafiltration with ozonation for the treatment of secondary urban wastewater: organic micropollutants, microbial load and biological effectsAdvanced oxidationBiological contaminantsCytotoxicityMembrane technologyMicropollutantsWastewater reuseOzonation followed by ultrafiltration (O3 + UF) was employed at pilot scale for the treatment of secondary urban wastewater, envisaging its safe reuse for crop irrigation. Chemical contaminants of emerging concern (CECs) and priority substances (PSs), microbial load, estrogenic activity, cell viability and cellular metabolic activity were measured before and immediately after O3 + UF treatment. The microbial load was also evaluated after one-week storage of the treated water to assess potential bacteria regrowth. Among the organic micropollutants detected, only citalopram and isoproturon were not removed below the limit of quantification. The treatment was also effective in the reduction in the bacterial loads considering current legislation in water quality for irrigation (i.e., in terms of enterobacteria and nematode eggs). However, after seven days of storage, total heterotrophs regrew to levels close to the initial, with the concomitant increase in the genes 16S rRNA and intI1. The assessment of biological effects revealed similar water quality before and after treatment, meaning that O3 + UF did not produce detectable toxic by-products. Thus, the findings of this study indicate that the wastewater treated with this technology comply with the water quality standards for irrigation, even when stored up to one week, although improvements must be made to minimise microbial overgrowth.Veritati - Repositório Institucional da Universidade Católica PortuguesaGraça, Cátia A. L.Ribeirinho-Soares, SaraAbreu-Silva, JoanaRamos, Inês I.Ribeiro, Ana R.Castro-Silva, Sérgio M.Segundo, Marcela A.Manaia, Célia M.Nunes, Olga C.Silva, Adrián M. T.2021-05-13T09:23:20Z2020-122020-12-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.14/33069eng2073-444110.3390/w1212345885100020622000602966800001info: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:RCAAP2023-07-12T17:38:36Zoai:repositorio.ucp.pt:10400.14/33069Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:26:43.545154Repositório 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 |
A pilot study combining ultrafiltration with ozonation for the treatment of secondary urban wastewater: organic micropollutants, microbial load and biological effects |
title |
A pilot study combining ultrafiltration with ozonation for the treatment of secondary urban wastewater: organic micropollutants, microbial load and biological effects |
spellingShingle |
A pilot study combining ultrafiltration with ozonation for the treatment of secondary urban wastewater: organic micropollutants, microbial load and biological effects Graça, Cátia A. L. Advanced oxidation Biological contaminants Cytotoxicity Membrane technology Micropollutants Wastewater reuse |
title_short |
A pilot study combining ultrafiltration with ozonation for the treatment of secondary urban wastewater: organic micropollutants, microbial load and biological effects |
title_full |
A pilot study combining ultrafiltration with ozonation for the treatment of secondary urban wastewater: organic micropollutants, microbial load and biological effects |
title_fullStr |
A pilot study combining ultrafiltration with ozonation for the treatment of secondary urban wastewater: organic micropollutants, microbial load and biological effects |
title_full_unstemmed |
A pilot study combining ultrafiltration with ozonation for the treatment of secondary urban wastewater: organic micropollutants, microbial load and biological effects |
title_sort |
A pilot study combining ultrafiltration with ozonation for the treatment of secondary urban wastewater: organic micropollutants, microbial load and biological effects |
author |
Graça, Cátia A. L. |
author_facet |
Graça, Cátia A. L. Ribeirinho-Soares, Sara Abreu-Silva, Joana Ramos, Inês I. Ribeiro, Ana R. Castro-Silva, Sérgio M. Segundo, Marcela A. Manaia, Célia M. Nunes, Olga C. Silva, Adrián M. T. |
author_role |
author |
author2 |
Ribeirinho-Soares, Sara Abreu-Silva, Joana Ramos, Inês I. Ribeiro, Ana R. Castro-Silva, Sérgio M. Segundo, Marcela A. Manaia, Célia M. Nunes, Olga C. Silva, Adrián M. T. |
author2_role |
author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Veritati - Repositório Institucional da Universidade Católica Portuguesa |
dc.contributor.author.fl_str_mv |
Graça, Cátia A. L. Ribeirinho-Soares, Sara Abreu-Silva, Joana Ramos, Inês I. Ribeiro, Ana R. Castro-Silva, Sérgio M. Segundo, Marcela A. Manaia, Célia M. Nunes, Olga C. Silva, Adrián M. T. |
dc.subject.por.fl_str_mv |
Advanced oxidation Biological contaminants Cytotoxicity Membrane technology Micropollutants Wastewater reuse |
topic |
Advanced oxidation Biological contaminants Cytotoxicity Membrane technology Micropollutants Wastewater reuse |
description |
Ozonation followed by ultrafiltration (O3 + UF) was employed at pilot scale for the treatment of secondary urban wastewater, envisaging its safe reuse for crop irrigation. Chemical contaminants of emerging concern (CECs) and priority substances (PSs), microbial load, estrogenic activity, cell viability and cellular metabolic activity were measured before and immediately after O3 + UF treatment. The microbial load was also evaluated after one-week storage of the treated water to assess potential bacteria regrowth. Among the organic micropollutants detected, only citalopram and isoproturon were not removed below the limit of quantification. The treatment was also effective in the reduction in the bacterial loads considering current legislation in water quality for irrigation (i.e., in terms of enterobacteria and nematode eggs). However, after seven days of storage, total heterotrophs regrew to levels close to the initial, with the concomitant increase in the genes 16S rRNA and intI1. The assessment of biological effects revealed similar water quality before and after treatment, meaning that O3 + UF did not produce detectable toxic by-products. Thus, the findings of this study indicate that the wastewater treated with this technology comply with the water quality standards for irrigation, even when stored up to one week, although improvements must be made to minimise microbial overgrowth. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-12 2020-12-01T00:00:00Z 2021-05-13T09:23:20Z |
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/10400.14/33069 |
url |
http://hdl.handle.net/10400.14/33069 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2073-4441 10.3390/w12123458 85100020622 000602966800001 |
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.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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1799131983636332544 |