Association between the concentration of protozoa and surrogates in effluents of the slow sand filtration for water treatment
Autor(a) principal: | |
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Data de Publicação: | 2007 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Microbiology |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000200029 |
Resumo: | Currently, a major challenge on producing high-quality drinking water is to monitor pathogens, such as Giardia, Cryptosporidium and enteric viruses. Due to limitations of the analytical methods available to detect pathogens in water, the research of surrogate indicators is an up-to-date subject. In view of these aspects, a pilot scale study was performed to evaluate the association between microbiological and physical indicators and the presence of Giardia spp and Cryptosporidium sp in the effluent of upflow and downflow slow sand filters. The results showed that efficient bacterial removal could indicate suitable protozoa removal. Although coliforms and Escherichia coli do not present the appropriate physiological profile for an "ideal" indicator, they are still good references for drinking water microbiological quality, specifically for slow sand filtration. The results also point out to the need of deeper researches about the use of anaerobic spores as routine indicator. Regarding the control of Cryptosporidium outbreaks, the expectation that a single indicator will satisfy all purposes is unreal. It may be more useful to know the advantages and disadvantages of several indicators, and integrate them appropriately. |
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Brazilian Journal of Microbiology |
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Association between the concentration of protozoa and surrogates in effluents of the slow sand filtration for water treatmentCryptosporidiumGiardiaslow sand filtrationsurrogatemicrobiological indicatorCurrently, a major challenge on producing high-quality drinking water is to monitor pathogens, such as Giardia, Cryptosporidium and enteric viruses. Due to limitations of the analytical methods available to detect pathogens in water, the research of surrogate indicators is an up-to-date subject. In view of these aspects, a pilot scale study was performed to evaluate the association between microbiological and physical indicators and the presence of Giardia spp and Cryptosporidium sp in the effluent of upflow and downflow slow sand filters. The results showed that efficient bacterial removal could indicate suitable protozoa removal. Although coliforms and Escherichia coli do not present the appropriate physiological profile for an "ideal" indicator, they are still good references for drinking water microbiological quality, specifically for slow sand filtration. The results also point out to the need of deeper researches about the use of anaerobic spores as routine indicator. Regarding the control of Cryptosporidium outbreaks, the expectation that a single indicator will satisfy all purposes is unreal. It may be more useful to know the advantages and disadvantages of several indicators, and integrate them appropriately.Sociedade Brasileira de Microbiologia2007-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000200029Brazilian Journal of Microbiology v.38 n.2 2007reponame:Brazilian Journal of Microbiologyinstname:Sociedade Brasileira de Microbiologia (SBM)instacron:SBM10.1590/S1517-83822007000200029info:eu-repo/semantics/openAccessHeller,LéoVieira,Maria Berenice Cardoso MartinsBrito,Ludmila Ladeira Alves deSalvador,Daniella Pedrosaeng2007-06-29T00:00:00Zoai:scielo:S1517-83822007000200029Revistahttps://www.scielo.br/j/bjm/ONGhttps://old.scielo.br/oai/scielo-oai.phpbjm@sbmicrobiologia.org.br||mbmartin@usp.br1678-44051517-8382opendoar:2007-06-29T00:00Brazilian Journal of Microbiology - Sociedade Brasileira de Microbiologia (SBM)false |
dc.title.none.fl_str_mv |
Association between the concentration of protozoa and surrogates in effluents of the slow sand filtration for water treatment |
title |
Association between the concentration of protozoa and surrogates in effluents of the slow sand filtration for water treatment |
spellingShingle |
Association between the concentration of protozoa and surrogates in effluents of the slow sand filtration for water treatment Heller,Léo Cryptosporidium Giardia slow sand filtration surrogate microbiological indicator |
title_short |
Association between the concentration of protozoa and surrogates in effluents of the slow sand filtration for water treatment |
title_full |
Association between the concentration of protozoa and surrogates in effluents of the slow sand filtration for water treatment |
title_fullStr |
Association between the concentration of protozoa and surrogates in effluents of the slow sand filtration for water treatment |
title_full_unstemmed |
Association between the concentration of protozoa and surrogates in effluents of the slow sand filtration for water treatment |
title_sort |
Association between the concentration of protozoa and surrogates in effluents of the slow sand filtration for water treatment |
author |
Heller,Léo |
author_facet |
Heller,Léo Vieira,Maria Berenice Cardoso Martins Brito,Ludmila Ladeira Alves de Salvador,Daniella Pedrosa |
author_role |
author |
author2 |
Vieira,Maria Berenice Cardoso Martins Brito,Ludmila Ladeira Alves de Salvador,Daniella Pedrosa |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Heller,Léo Vieira,Maria Berenice Cardoso Martins Brito,Ludmila Ladeira Alves de Salvador,Daniella Pedrosa |
dc.subject.por.fl_str_mv |
Cryptosporidium Giardia slow sand filtration surrogate microbiological indicator |
topic |
Cryptosporidium Giardia slow sand filtration surrogate microbiological indicator |
description |
Currently, a major challenge on producing high-quality drinking water is to monitor pathogens, such as Giardia, Cryptosporidium and enteric viruses. Due to limitations of the analytical methods available to detect pathogens in water, the research of surrogate indicators is an up-to-date subject. In view of these aspects, a pilot scale study was performed to evaluate the association between microbiological and physical indicators and the presence of Giardia spp and Cryptosporidium sp in the effluent of upflow and downflow slow sand filters. The results showed that efficient bacterial removal could indicate suitable protozoa removal. Although coliforms and Escherichia coli do not present the appropriate physiological profile for an "ideal" indicator, they are still good references for drinking water microbiological quality, specifically for slow sand filtration. The results also point out to the need of deeper researches about the use of anaerobic spores as routine indicator. Regarding the control of Cryptosporidium outbreaks, the expectation that a single indicator will satisfy all purposes is unreal. It may be more useful to know the advantages and disadvantages of several indicators, and integrate them appropriately. |
publishDate |
2007 |
dc.date.none.fl_str_mv |
2007-06-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000200029 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000200029 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1517-83822007000200029 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Microbiologia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Microbiologia |
dc.source.none.fl_str_mv |
Brazilian Journal of Microbiology v.38 n.2 2007 reponame:Brazilian Journal of Microbiology instname:Sociedade Brasileira de Microbiologia (SBM) instacron:SBM |
instname_str |
Sociedade Brasileira de Microbiologia (SBM) |
instacron_str |
SBM |
institution |
SBM |
reponame_str |
Brazilian Journal of Microbiology |
collection |
Brazilian Journal of Microbiology |
repository.name.fl_str_mv |
Brazilian Journal of Microbiology - Sociedade Brasileira de Microbiologia (SBM) |
repository.mail.fl_str_mv |
bjm@sbmicrobiologia.org.br||mbmartin@usp.br |
_version_ |
1752122201067225088 |