Influence of different anoxic time exposures on active biomass, protozoa and filamentous bacteria in activated sludge

17 Páginas, 3 Figuras

Detalles Bibliográficos
Autores: Rodríguez Pérez, S., Fermoso, Fernando G., Arnaiz, C.
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2016
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/137514
Acceso en línea:http://hdl.handle.net/10261/137514
Access Level:acceso abierto
Palabra clave:Biomass production
Anoxic periods
Active biomass
Protozoa population
Filamentous bacteria
Biomass activity
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spelling Influence of different anoxic time exposures on active biomass, protozoa and filamentous bacteria in activated sludgeRodríguez Pérez, S.Fermoso, Fernando G.Arnaiz, C.Biomass productionAnoxic periodsActive biomassProtozoa populationFilamentous bacteriaBiomass activity17 Páginas, 3 FigurasMedium-sized wastewater treatment plants are considered too small to implement anaerobic digestion technologies and too large for extensive treatments. A promising option as a sewage sludge reduction method is the inclusion of anoxic time exposures. In the present study, three different anoxic time exposures of 12, 6 and 4 hours have been studied to reduce sewage sludge production. The best anoxic time exposure was observed under anoxic/oxic cycles of 6 hours, which reduced 29.63% of the biomass production compared with the oxic control conditions. The sludge under different anoxic time exposures, even with a lower active biomass concentration than the oxic control conditions, showed a much higher metabolic activity than the oxic control conditions. Microbiological results suggested that both protozoa density and abundance of filamentous bacteria decrease under anoxic time exposures compared to oxic control conditions. The anoxic time exposures 6/6 showed the highest reduction in both protozoa density, 37.5%, and abundance of filamentous bacteria, 41.1%, in comparison to the oxic control conditions. The groups of crawling ciliates, carnivorous ciliates and filamentous bacteria were highly influenced by the anoxic time exposures. Protozoa density and abundance of filamentous bacteria have been shown as promising bioindicators of biomass production reduction.Peer reviewedIWA PublishingConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201620162016info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/137514reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi org/10.2166/wst.2016.247Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1375142026-05-22T06:33:51Z
dc.title.none.fl_str_mv Influence of different anoxic time exposures on active biomass, protozoa and filamentous bacteria in activated sludge
title Influence of different anoxic time exposures on active biomass, protozoa and filamentous bacteria in activated sludge
spellingShingle Influence of different anoxic time exposures on active biomass, protozoa and filamentous bacteria in activated sludge
Rodríguez Pérez, S.
Biomass production
Anoxic periods
Active biomass
Protozoa population
Filamentous bacteria
Biomass activity
title_short Influence of different anoxic time exposures on active biomass, protozoa and filamentous bacteria in activated sludge
title_full Influence of different anoxic time exposures on active biomass, protozoa and filamentous bacteria in activated sludge
title_fullStr Influence of different anoxic time exposures on active biomass, protozoa and filamentous bacteria in activated sludge
title_full_unstemmed Influence of different anoxic time exposures on active biomass, protozoa and filamentous bacteria in activated sludge
title_sort Influence of different anoxic time exposures on active biomass, protozoa and filamentous bacteria in activated sludge
dc.creator.none.fl_str_mv Rodríguez Pérez, S.
Fermoso, Fernando G.
Arnaiz, C.
author Rodríguez Pérez, S.
author_facet Rodríguez Pérez, S.
Fermoso, Fernando G.
Arnaiz, C.
author_role author
author2 Fermoso, Fernando G.
Arnaiz, C.
author2_role author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Biomass production
Anoxic periods
Active biomass
Protozoa population
Filamentous bacteria
Biomass activity
topic Biomass production
Anoxic periods
Active biomass
Protozoa population
Filamentous bacteria
Biomass activity
description 17 Páginas, 3 Figuras
publishDate 2016
dc.date.none.fl_str_mv 2016
2016
2016
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/137514
url http://hdl.handle.net/10261/137514
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi org/10.2166/wst.2016.247
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv IWA Publishing
publisher.none.fl_str_mv IWA Publishing
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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