CONTAMINAÇÃO DA ÁGUA SUBTERRÂNEA POR NITRATO NO PARQUE ECOLOGICO DO TIETÊ - SÃO PAULO, BRASIL

Bibliographic Details
Main Author: Varnier, Cláudia
Publication Date: 2002
Other Authors: Hirata, Ricardo
Format: Article
Language: por
Source: Águas Subterrâneas (São Paulo. Online)
Download full: https://aguassubterraneas.abas.org/asubterraneas/article/view/1303
Summary: The aim of this study is to investigate groundwater contamination caused by septic tank, which infiltrates domestic effluent into a sandy-alluvial unconfined aquifer at Parque Ecológico do Tietê (São Paulo, Brasil). The methodology used is based on chemical analysis of 68 shallow monitoring wells (up to 5.0 deep) installed at 50x50m area. Some chemical parameters as nitrate, nitrite, ammonium, chloride, pH, Eh, electric conductivity and dissolved oxygen have been measured fortnightly using portable equipaments. Major ions and nitrogen compounds (organic-N, ammonia, ammonium, nitrite, nitrate) have been analysed monthly. This detailed monitoring program has allowed to identify three different geochemical zones, according to predominance of nitrogen species: organic-N, ammonium and nitrate. Following the groundwater flux, it is also possible to verify a decrease in the pH values. From chloride concentration variation and eletric conductivity, the dispersion of the plume was calculated. Fast contaminant concentration variations have been attributed to the rapid aquifer recharge that provokes deformation into the streamtubes geometry.
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network_name_str Águas Subterrâneas (São Paulo. Online)
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spelling CONTAMINAÇÃO DA ÁGUA SUBTERRÂNEA POR NITRATO NO PARQUE ECOLOGICO DO TIETÊ - SÃO PAULO, BRASILNitratoTanque sépticoÁgua subterrânea. The aim of this study is to investigate groundwater contamination caused by septic tank, which infiltrates domestic effluent into a sandy-alluvial unconfined aquifer at Parque Ecológico do Tietê (São Paulo, Brasil). The methodology used is based on chemical analysis of 68 shallow monitoring wells (up to 5.0 deep) installed at 50x50m area. Some chemical parameters as nitrate, nitrite, ammonium, chloride, pH, Eh, electric conductivity and dissolved oxygen have been measured fortnightly using portable equipaments. Major ions and nitrogen compounds (organic-N, ammonia, ammonium, nitrite, nitrate) have been analysed monthly. This detailed monitoring program has allowed to identify three different geochemical zones, according to predominance of nitrogen species: organic-N, ammonium and nitrate. Following the groundwater flux, it is also possible to verify a decrease in the pH values. From chloride concentration variation and eletric conductivity, the dispersion of the plume was calculated. Fast contaminant concentration variations have been attributed to the rapid aquifer recharge that provokes deformation into the streamtubes geometry. ABAS - Associação Brasileira de Águas Subterrâneas2002-12-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://aguassubterraneas.abas.org/asubterraneas/article/view/130310.14295/ras.v16i1.1303Águas Subterrâneas; v. 16 n. 1 (2002): REVISTA ÁGUAS SUBTERRÂNEAS2179-97840101-7004reponame:Águas Subterrâneas (São Paulo. Online)instname:Associação Brasileira de Águas Subterrâneasinstacron:ABASporhttps://aguassubterraneas.abas.org/asubterraneas/article/view/1303/1081Copyright (c) 2014 Águas Subterrâneasinfo:eu-repo/semantics/openAccessVarnier, CláudiaHirata, Ricardo2017-09-22T13:59:57Zoai:ojs.aguassubterraneas.abas.org:article/1303Revistahttps://aguassubterraneas.abas.org/asubterraneas/ONGhttps://aguassubterraneas.abas.org/asubterraneas/oaihidropaulo@gmail.com2179-97840101-7004opendoar:2017-09-22T13:59:57Águas Subterrâneas (São Paulo. Online) - Associação Brasileira de Águas Subterrâneasfalse
dc.title.none.fl_str_mv CONTAMINAÇÃO DA ÁGUA SUBTERRÂNEA POR NITRATO NO PARQUE ECOLOGICO DO TIETÊ - SÃO PAULO, BRASIL
title CONTAMINAÇÃO DA ÁGUA SUBTERRÂNEA POR NITRATO NO PARQUE ECOLOGICO DO TIETÊ - SÃO PAULO, BRASIL
spellingShingle CONTAMINAÇÃO DA ÁGUA SUBTERRÂNEA POR NITRATO NO PARQUE ECOLOGICO DO TIETÊ - SÃO PAULO, BRASIL
Varnier, Cláudia
Nitrato
Tanque séptico
Água subterrânea.
title_short CONTAMINAÇÃO DA ÁGUA SUBTERRÂNEA POR NITRATO NO PARQUE ECOLOGICO DO TIETÊ - SÃO PAULO, BRASIL
title_full CONTAMINAÇÃO DA ÁGUA SUBTERRÂNEA POR NITRATO NO PARQUE ECOLOGICO DO TIETÊ - SÃO PAULO, BRASIL
title_fullStr CONTAMINAÇÃO DA ÁGUA SUBTERRÂNEA POR NITRATO NO PARQUE ECOLOGICO DO TIETÊ - SÃO PAULO, BRASIL
title_full_unstemmed CONTAMINAÇÃO DA ÁGUA SUBTERRÂNEA POR NITRATO NO PARQUE ECOLOGICO DO TIETÊ - SÃO PAULO, BRASIL
title_sort CONTAMINAÇÃO DA ÁGUA SUBTERRÂNEA POR NITRATO NO PARQUE ECOLOGICO DO TIETÊ - SÃO PAULO, BRASIL
author Varnier, Cláudia
author_facet Varnier, Cláudia
Hirata, Ricardo
author_role author
author2 Hirata, Ricardo
author2_role author
dc.contributor.author.fl_str_mv Varnier, Cláudia
Hirata, Ricardo
dc.subject.por.fl_str_mv Nitrato
Tanque séptico
Água subterrânea.
topic Nitrato
Tanque séptico
Água subterrânea.
description The aim of this study is to investigate groundwater contamination caused by septic tank, which infiltrates domestic effluent into a sandy-alluvial unconfined aquifer at Parque Ecológico do Tietê (São Paulo, Brasil). The methodology used is based on chemical analysis of 68 shallow monitoring wells (up to 5.0 deep) installed at 50x50m area. Some chemical parameters as nitrate, nitrite, ammonium, chloride, pH, Eh, electric conductivity and dissolved oxygen have been measured fortnightly using portable equipaments. Major ions and nitrogen compounds (organic-N, ammonia, ammonium, nitrite, nitrate) have been analysed monthly. This detailed monitoring program has allowed to identify three different geochemical zones, according to predominance of nitrogen species: organic-N, ammonium and nitrate. Following the groundwater flux, it is also possible to verify a decrease in the pH values. From chloride concentration variation and eletric conductivity, the dispersion of the plume was calculated. Fast contaminant concentration variations have been attributed to the rapid aquifer recharge that provokes deformation into the streamtubes geometry.
publishDate 2002
dc.date.none.fl_str_mv 2002-12-09
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://aguassubterraneas.abas.org/asubterraneas/article/view/1303
10.14295/ras.v16i1.1303
url https://aguassubterraneas.abas.org/asubterraneas/article/view/1303
identifier_str_mv 10.14295/ras.v16i1.1303
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://aguassubterraneas.abas.org/asubterraneas/article/view/1303/1081
dc.rights.driver.fl_str_mv Copyright (c) 2014 Águas Subterrâneas
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2014 Águas Subterrâneas
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv ABAS - Associação Brasileira de Águas Subterrâneas
publisher.none.fl_str_mv ABAS - Associação Brasileira de Águas Subterrâneas
dc.source.none.fl_str_mv Águas Subterrâneas; v. 16 n. 1 (2002): REVISTA ÁGUAS SUBTERRÂNEAS
2179-9784
0101-7004
reponame:Águas Subterrâneas (São Paulo. Online)
instname:Associação Brasileira de Águas Subterrâneas
instacron:ABAS
instname_str Associação Brasileira de Águas Subterrâneas
instacron_str ABAS
institution ABAS
reponame_str Águas Subterrâneas (São Paulo. Online)
collection Águas Subterrâneas (São Paulo. Online)
repository.name.fl_str_mv Águas Subterrâneas (São Paulo. Online) - Associação Brasileira de Águas Subterrâneas
repository.mail.fl_str_mv hidropaulo@gmail.com
_version_ 1833824191930957824

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