Study of sequential disinfection for the inactivation of protozoa and indicator microorganisms in wastewater

Detalhes bibliográficos
Autor(a) principal: Medeiros, Raphael Corrêa
Data de Publicação: 2015
Outros Autores: Daniel, Luiz Antonio
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Acta scientiarum. Technology (Online)
Texto Completo: http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/24950
Resumo: Sewage disinfection has the primary objective of inactivating pathogenic organisms to prevent the dissemination of waterborne diseases. This study analyzed individual disinfection, with chlorine and ultraviolet radiation, and sequential disinfection (chlorine-UV radiation). The tests were conducted with anaerobic effluent in batch, in laboratory scale, with two dosages of chlorine (10 and 20 mg L-1) and UV (2.5 and 6.1 Wh m-3). In addition, to guarantee the presence of cysts in the tests, 104 cysts per liter of Giardia spp. were inoculated. The resistance order was as follows: E. coli = Total Coliforms < Clostridium perfringens < Giardia spp.. Furthermore, synergistic effects reached 0.06 to 1.42 log of inactivation in sequential disinfection for both the most resistant microorganisms. 
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spelling Study of sequential disinfection for the inactivation of protozoa and indicator microorganisms in wastewaterChlorineUltraviolet radiationGiardiaClostridium perfringensTotal coliformsSynergism.chlorineultraviolet radiationGiardiaClostridium perfringenstotal coliformssynergism.Sewage disinfection has the primary objective of inactivating pathogenic organisms to prevent the dissemination of waterborne diseases. This study analyzed individual disinfection, with chlorine and ultraviolet radiation, and sequential disinfection (chlorine-UV radiation). The tests were conducted with anaerobic effluent in batch, in laboratory scale, with two dosages of chlorine (10 and 20 mg L-1) and UV (2.5 and 6.1 Wh m-3). In addition, to guarantee the presence of cysts in the tests, 104 cysts per liter of Giardia spp. were inoculated. The resistance order was as follows: E. coli = Total Coliforms < Clostridium perfringens < Giardia spp.. Furthermore, synergistic effects reached 0.06 to 1.42 log of inactivation in sequential disinfection for both the most resistant microorganisms. Universidade Estadual De Maringá2015-05-29info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiondisinfection; chlorination; radiationapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/2495010.4025/actascitechnol.v37i2.24950Acta Scientiarum. Technology; Vol 37 No 2 (2015); 203-209Acta Scientiarum. Technology; v. 37 n. 2 (2015); 203-2091806-25631807-8664reponame:Acta scientiarum. Technology (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMenghttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/24950/pdf_81Medeiros, Raphael CorrêaDaniel, Luiz Antonioinfo:eu-repo/semantics/openAccess2015-07-03T14:44:16Zoai:periodicos.uem.br/ojs:article/24950Revistahttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/indexPUBhttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/oai||actatech@uem.br1807-86641806-2563opendoar:2015-07-03T14:44:16Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM)false
dc.title.none.fl_str_mv Study of sequential disinfection for the inactivation of protozoa and indicator microorganisms in wastewater
title Study of sequential disinfection for the inactivation of protozoa and indicator microorganisms in wastewater
spellingShingle Study of sequential disinfection for the inactivation of protozoa and indicator microorganisms in wastewater
Medeiros, Raphael Corrêa
Chlorine
Ultraviolet radiation
Giardia
Clostridium perfringens
Total coliforms
Synergism.
chlorine
ultraviolet radiation
Giardia
Clostridium perfringens
total coliforms
synergism.
title_short Study of sequential disinfection for the inactivation of protozoa and indicator microorganisms in wastewater
title_full Study of sequential disinfection for the inactivation of protozoa and indicator microorganisms in wastewater
title_fullStr Study of sequential disinfection for the inactivation of protozoa and indicator microorganisms in wastewater
title_full_unstemmed Study of sequential disinfection for the inactivation of protozoa and indicator microorganisms in wastewater
title_sort Study of sequential disinfection for the inactivation of protozoa and indicator microorganisms in wastewater
author Medeiros, Raphael Corrêa
author_facet Medeiros, Raphael Corrêa
Daniel, Luiz Antonio
author_role author
author2 Daniel, Luiz Antonio
author2_role author
dc.contributor.author.fl_str_mv Medeiros, Raphael Corrêa
Daniel, Luiz Antonio
dc.subject.por.fl_str_mv Chlorine
Ultraviolet radiation
Giardia
Clostridium perfringens
Total coliforms
Synergism.
chlorine
ultraviolet radiation
Giardia
Clostridium perfringens
total coliforms
synergism.
topic Chlorine
Ultraviolet radiation
Giardia
Clostridium perfringens
Total coliforms
Synergism.
chlorine
ultraviolet radiation
Giardia
Clostridium perfringens
total coliforms
synergism.
description Sewage disinfection has the primary objective of inactivating pathogenic organisms to prevent the dissemination of waterborne diseases. This study analyzed individual disinfection, with chlorine and ultraviolet radiation, and sequential disinfection (chlorine-UV radiation). The tests were conducted with anaerobic effluent in batch, in laboratory scale, with two dosages of chlorine (10 and 20 mg L-1) and UV (2.5 and 6.1 Wh m-3). In addition, to guarantee the presence of cysts in the tests, 104 cysts per liter of Giardia spp. were inoculated. The resistance order was as follows: E. coli = Total Coliforms < Clostridium perfringens < Giardia spp.. Furthermore, synergistic effects reached 0.06 to 1.42 log of inactivation in sequential disinfection for both the most resistant microorganisms. 
publishDate 2015
dc.date.none.fl_str_mv 2015-05-29
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
disinfection; chlorination; radiation
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/24950
10.4025/actascitechnol.v37i2.24950
url http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/24950
identifier_str_mv 10.4025/actascitechnol.v37i2.24950
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/24950/pdf_81
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 Universidade Estadual De Maringá
publisher.none.fl_str_mv Universidade Estadual De Maringá
dc.source.none.fl_str_mv Acta Scientiarum. Technology; Vol 37 No 2 (2015); 203-209
Acta Scientiarum. Technology; v. 37 n. 2 (2015); 203-209
1806-2563
1807-8664
reponame:Acta scientiarum. Technology (Online)
instname:Universidade Estadual de Maringá (UEM)
instacron:UEM
instname_str Universidade Estadual de Maringá (UEM)
instacron_str UEM
institution UEM
reponame_str Acta scientiarum. Technology (Online)
collection Acta scientiarum. Technology (Online)
repository.name.fl_str_mv Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM)
repository.mail.fl_str_mv ||actatech@uem.br
_version_ 1799315335459897344

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