Decay process of free residual chlorine concentration affected by travel time in water distribution systems

Detalhes bibliográficos
Autor(a) principal: Oliveira,Luciano de
Data de Publicação: 2022
Outros Autores: Reis,Diana Rosa dos, Hoffmann,Nora Katia Saavedra del Aguila
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista Ambiente & Água
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1980-993X2022000300307
Resumo: Abstract Chlorination is the most widely used method for disinfecting water for human consumption. While the chlorinated water travels through a distribution system, the concentration of free residual chlorine (FRC) declines depending on the natural water characteristics. This study investigated FRC decay in two types of water sources - ground and surface water - with varied concentrations of organic compounds. The travel time variable depended on water consumption patterns of both distribution systems which attend low density populations and their initial project needs. Based on mathematical simulation techniques of water quality models, the study also investigated the effects of water temperature and total organic carbon (TOC) on the kinetic constants (kb) of chlorine decay. Results show that travel time in the most critical locations in the water networks and the minimum disinfectant concentrations required at the entry points were 40 hours and 0.27-0.28 mg L-1 at Vale dos Pássaros housing complex, and 144 hours and 0.30-0.36 mg L-1 at Terras Alphaville housing complex.
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spelling Decay process of free residual chlorine concentration affected by travel time in water distribution systemsdisinfectionTOCwater qualityAbstract Chlorination is the most widely used method for disinfecting water for human consumption. While the chlorinated water travels through a distribution system, the concentration of free residual chlorine (FRC) declines depending on the natural water characteristics. This study investigated FRC decay in two types of water sources - ground and surface water - with varied concentrations of organic compounds. The travel time variable depended on water consumption patterns of both distribution systems which attend low density populations and their initial project needs. Based on mathematical simulation techniques of water quality models, the study also investigated the effects of water temperature and total organic carbon (TOC) on the kinetic constants (kb) of chlorine decay. Results show that travel time in the most critical locations in the water networks and the minimum disinfectant concentrations required at the entry points were 40 hours and 0.27-0.28 mg L-1 at Vale dos Pássaros housing complex, and 144 hours and 0.30-0.36 mg L-1 at Terras Alphaville housing complex.Instituto de Pesquisas Ambientais em Bacias Hidrográficas2022-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1980-993X2022000300307Revista Ambiente & Água v.17 n.3 2022reponame:Revista Ambiente & Águainstname:Instituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHI)instacron:IPABHI10.4136/ambi-agua.2830info:eu-repo/semantics/openAccessOliveira,Luciano deReis,Diana Rosa dosHoffmann,Nora Katia Saavedra del Aguilaeng2022-06-13T00:00:00Zoai:scielo:S1980-993X2022000300307Revistahttp://www.ambi-agua.net/PUBhttps://old.scielo.br/oai/scielo-oai.php||ambi.agua@gmail.com1980-993X1980-993Xopendoar:2022-06-13T00:00Revista Ambiente & Água - Instituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHI)false
dc.title.none.fl_str_mv Decay process of free residual chlorine concentration affected by travel time in water distribution systems
title Decay process of free residual chlorine concentration affected by travel time in water distribution systems
spellingShingle Decay process of free residual chlorine concentration affected by travel time in water distribution systems
Oliveira,Luciano de
disinfection
TOC
water quality
title_short Decay process of free residual chlorine concentration affected by travel time in water distribution systems
title_full Decay process of free residual chlorine concentration affected by travel time in water distribution systems
title_fullStr Decay process of free residual chlorine concentration affected by travel time in water distribution systems
title_full_unstemmed Decay process of free residual chlorine concentration affected by travel time in water distribution systems
title_sort Decay process of free residual chlorine concentration affected by travel time in water distribution systems
author Oliveira,Luciano de
author_facet Oliveira,Luciano de
Reis,Diana Rosa dos
Hoffmann,Nora Katia Saavedra del Aguila
author_role author
author2 Reis,Diana Rosa dos
Hoffmann,Nora Katia Saavedra del Aguila
author2_role author
author
dc.contributor.author.fl_str_mv Oliveira,Luciano de
Reis,Diana Rosa dos
Hoffmann,Nora Katia Saavedra del Aguila
dc.subject.por.fl_str_mv disinfection
TOC
water quality
topic disinfection
TOC
water quality
description Abstract Chlorination is the most widely used method for disinfecting water for human consumption. While the chlorinated water travels through a distribution system, the concentration of free residual chlorine (FRC) declines depending on the natural water characteristics. This study investigated FRC decay in two types of water sources - ground and surface water - with varied concentrations of organic compounds. The travel time variable depended on water consumption patterns of both distribution systems which attend low density populations and their initial project needs. Based on mathematical simulation techniques of water quality models, the study also investigated the effects of water temperature and total organic carbon (TOC) on the kinetic constants (kb) of chlorine decay. Results show that travel time in the most critical locations in the water networks and the minimum disinfectant concentrations required at the entry points were 40 hours and 0.27-0.28 mg L-1 at Vale dos Pássaros housing complex, and 144 hours and 0.30-0.36 mg L-1 at Terras Alphaville housing complex.
publishDate 2022
dc.date.none.fl_str_mv 2022-01-01
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=S1980-993X2022000300307
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dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.4136/ambi-agua.2830
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
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dc.publisher.none.fl_str_mv Instituto de Pesquisas Ambientais em Bacias Hidrográficas
publisher.none.fl_str_mv Instituto de Pesquisas Ambientais em Bacias Hidrográficas
dc.source.none.fl_str_mv Revista Ambiente & Água v.17 n.3 2022
reponame:Revista Ambiente & Água
instname:Instituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHI)
instacron:IPABHI
instname_str Instituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHI)
instacron_str IPABHI
institution IPABHI
reponame_str Revista Ambiente & Água
collection Revista Ambiente & Água
repository.name.fl_str_mv Revista Ambiente & Água - Instituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHI)
repository.mail.fl_str_mv ||ambi.agua@gmail.com
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