Dilution and autodepuration processes in a coastal system affected by urban wastewater discharges: Case study of the Iro River estuary (southwestern Spain)

Dilution and autodepuration processes in an estuary of strong tidal regimen affected by sewage from a wastewater treatment plant have been studied and identified. To differentiate between both processes, three evaluations were made during different seasons. Two tests were developed in parallel durin...

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Autores principales:	Acevedo-Merino, A, Garrido-Pérez, C, Nebot-Sanz, E, Sales-Márquez, D
格式:	info:eu-repo/semantics/article
语言:	eng
出版:	Iniversidad Autónoma de Baja California 2005
主题:	estuary nutrients pathogens autodepuration T90 estuario patógenos nutrientes autodepuración
在线阅读:	https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/93
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id	repositorioinstitucional-20.500.12930-7336
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spelling	repositorioinstitucional-20.500.12930-73362023-05-09T14:30:59Z Dilution and autodepuration processes in a coastal system affected by urban wastewater discharges: Case study of the Iro River estuary (southwestern Spain) Fenómenos de dilución y autodepuración de un vertido de aguas residuales urbanas en un ecosistema litoral: El caso del estuario de l Río Iro (suroeste de España) Acevedo-Merino, A Garrido-Pérez, C Nebot-Sanz, E Sales-Márquez, D estuary nutrients pathogens autodepuration T90 estuario patógenos nutrientes autodepuración T90 Dilution and autodepuration processes in an estuary of strong tidal regimen affected by sewage from a wastewater treatment plant have been studied and identified. To differentiate between both processes, three evaluations were made during different seasons. Two tests were developed in parallel during each evaluation: characterization of the estuary and microcosm trials. In both tests, the evolution of diverse microbiological and physicochemical parameters were examined. From the microbiological results, T90 for the faecal coliform (FC) and faecal streptococci (FS) bacterial groups were obtained. In the estuary, dilution was identified as the most important microorganism reduction process, with T90 of 12.2–40.8 and 11.7–53.5 minutes for FC and FS, respectively. In the microcosm trials, salinity was the main autodepuration factor, with T90 of 3.1–42.6 and 4.6–54.8 hours for FC and FS, respectively. The FC group proved to be the most sensitive bacteria to autodepuration processes and FS the most adaptable to the adverse conditions of the aquatic environment. En este artículo se estudian e identifican los procesos de dilución y autodepuración que ocurren en un estuario de gran influencia mareal afectado por el vertido de una estación de tratamiento de aguas residuales urbanas. Para ello se han realizado tres estudios en diferentes estaciones climatológicas, cada uno de los cuales contó con dos experiencias realizadas en paralelo: caracterización del estuario y ensayos de microcosmos. En ambas experiencias se ha estudiado el comportamiento de diversos parámetros fsicoquímicos y microbiológicos. Del estudio microbiológico se han obtenido valores T90 para los grupos bacterianos de coliformes fecales (CF) y estreptococos fecales (EF). En el estuario, el proceso de dilución fue identificado como el proceso de reducción de microorganismos más importante obteniéndose T90 de 12.2–40.8 y 11.7–53.5 minutos para CF y EF, respectivamente. En los microcosmos, los procesos de autodepuración por efecto de la salinidad fueron los de mayor importancia obteniéndose T90 de 3.1–42.6 y 4.6–54.8 horas para CF y EF, respectivamente. El grupo de CF fue identificado como el más sensible ante los procesos de autodepuración, siendo EF el más resistente a las condiciones adversas del medio acuático. 2005-03-06 2021-06-03T03:54:57Z 2021-06-03T03:54:57Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/93 10.7773/cm.v31i12.93 https://hdl.handle.net/20.500.12930/7336 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/93/73 application/pdf Iniversidad Autónoma de Baja California Ciencias Marinas; Vol. 31 No. 1B (2005); 221-230 Ciencias Marinas; Vol. 31 Núm. 1B (2005); 221-230 2395-9053 0185-3880
institution	Repositorio Institucional
collection	DSpace
language	eng
topic	estuary nutrients pathogens autodepuration T90 estuario patógenos nutrientes autodepuración T90
spellingShingle	estuary nutrients pathogens autodepuration T90 estuario patógenos nutrientes autodepuración T90 Acevedo-Merino, A Garrido-Pérez, C Nebot-Sanz, E Sales-Márquez, D Dilution and autodepuration processes in a coastal system affected by urban wastewater discharges: Case study of the Iro River estuary (southwestern Spain)
description	Dilution and autodepuration processes in an estuary of strong tidal regimen affected by sewage from a wastewater treatment plant have been studied and identified. To differentiate between both processes, three evaluations were made during different seasons. Two tests were developed in parallel during each evaluation: characterization of the estuary and microcosm trials. In both tests, the evolution of diverse microbiological and physicochemical parameters were examined. From the microbiological results, T90 for the faecal coliform (FC) and faecal streptococci (FS) bacterial groups were obtained. In the estuary, dilution was identified as the most important microorganism reduction process, with T90 of 12.2–40.8 and 11.7–53.5 minutes for FC and FS, respectively. In the microcosm trials, salinity was the main autodepuration factor, with T90 of 3.1–42.6 and 4.6–54.8 hours for FC and FS, respectively. The FC group proved to be the most sensitive bacteria to autodepuration processes and FS the most adaptable to the adverse conditions of the aquatic environment.
format	info:eu-repo/semantics/article
author	Acevedo-Merino, A Garrido-Pérez, C Nebot-Sanz, E Sales-Márquez, D
author_facet	Acevedo-Merino, A Garrido-Pérez, C Nebot-Sanz, E Sales-Márquez, D
author_sort	Acevedo-Merino, A
title	Dilution and autodepuration processes in a coastal system affected by urban wastewater discharges: Case study of the Iro River estuary (southwestern Spain)
title_short	Dilution and autodepuration processes in a coastal system affected by urban wastewater discharges: Case study of the Iro River estuary (southwestern Spain)
title_full	Dilution and autodepuration processes in a coastal system affected by urban wastewater discharges: Case study of the Iro River estuary (southwestern Spain)
title_fullStr	Dilution and autodepuration processes in a coastal system affected by urban wastewater discharges: Case study of the Iro River estuary (southwestern Spain)
title_full_unstemmed	Dilution and autodepuration processes in a coastal system affected by urban wastewater discharges: Case study of the Iro River estuary (southwestern Spain)
title_sort	dilution and autodepuration processes in a coastal system affected by urban wastewater discharges: case study of the iro river estuary (southwestern spain)
publisher	Iniversidad Autónoma de Baja California
publishDate	2005
url	https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/93
_version_	1792610709450784768

Dilution and autodepuration processes in a coastal system affected by urban wastewater discharges: Case study of the Iro River estuary (southwestern Spain)

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