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 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
פורמט: Online
שפה:eng
יצא לאור: Iniversidad Autónoma de Baja California 2005
גישה מקוונת:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/93
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spelling oai:cienciasmarinas.com.mx:article-932019-04-26T17:49:06Z 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. Iniversidad Autónoma de Baja California 2005-03-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado application/pdf https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/93 10.7773/cm.v31i12.93 Ciencias Marinas; Vol. 31 No. 1B (2005); 221-230 Ciencias Marinas; Vol. 31 Núm. 1B (2005); 221-230 2395-9053 0185-3880 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/93/73
institution Ciencias Marinas
collection OJS
language eng
format Online
author Acevedo-Merino, A
Garrido-Pérez, C
Nebot-Sanz, E
Sales-Márquez, D
spellingShingle 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)
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)
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.
publisher Iniversidad Autónoma de Baja California
publishDate 2005
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/93
_version_ 1715723933634789376

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