Analysis of the quality of the Tárcoles River basin and the Torres River microbasin: influence of the effluent from the Los Tajos WWTP and expectations by 2025

This study presents the influence in terms of fecal contamination indicators that the effluent from the Los Tajos Wastewater Treatment Plant (Los Tajos WWTP) has on the Torres River bed and the mouth of the Virilla-Tárcoles basin. The simples were taken in foir points,; the first 200 meters before t...

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Detalles Bibliográficos
Autores: Mora-Alvarado, Darner, Alfaro-Arrieta, Ernesto, Alfaro-Lara, Juan José
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:Costa Rica
Institución:Instituto Tecnológico de Costa Rica
Repositorio:Portal de Revistas TEC
Idioma:español
OAI Identifier:oai:ojs.pkp.sfu.ca:article/7171
Acceso en línea:https://revistas.tec.ac.cr/index.php/tec_marcha/article/view/7171
Access Level:acceso abierto
Palabra clave:Coliformes termotolerantes
río Tárcoles
contaminación
río Torres
fecal
Thermotolerant coliforms
Tárcoles river
pollution
Torres river
id CR_a169dc698ca227a6ddaf97497186ca6d
oai_identifier_str oai:ojs.pkp.sfu.ca:article/7171
network_acronym_str CR
network_name_str Costa Rica
repository_id_str
dc.title.none.fl_str_mv Analysis of the quality of the Tárcoles River basin and the Torres River microbasin: influence of the effluent from the Los Tajos WWTP and expectations by 2025
Análisis de la calidad de la cuenca del Río Tárcoles y la microcuenca del Río Torres: influencia del efluente de la PTAR Los Tajos y espectativas al 2025
title Analysis of the quality of the Tárcoles River basin and the Torres River microbasin: influence of the effluent from the Los Tajos WWTP and expectations by 2025
spellingShingle Analysis of the quality of the Tárcoles River basin and the Torres River microbasin: influence of the effluent from the Los Tajos WWTP and expectations by 2025
Mora-Alvarado, Darner
Coliformes termotolerantes
río Tárcoles
contaminación
río Torres
fecal
Thermotolerant coliforms
Tárcoles river
pollution
Torres river
fecal
title_short Analysis of the quality of the Tárcoles River basin and the Torres River microbasin: influence of the effluent from the Los Tajos WWTP and expectations by 2025
title_full Analysis of the quality of the Tárcoles River basin and the Torres River microbasin: influence of the effluent from the Los Tajos WWTP and expectations by 2025
title_fullStr Analysis of the quality of the Tárcoles River basin and the Torres River microbasin: influence of the effluent from the Los Tajos WWTP and expectations by 2025
title_full_unstemmed Analysis of the quality of the Tárcoles River basin and the Torres River microbasin: influence of the effluent from the Los Tajos WWTP and expectations by 2025
title_sort Analysis of the quality of the Tárcoles River basin and the Torres River microbasin: influence of the effluent from the Los Tajos WWTP and expectations by 2025
dc.creator.none.fl_str_mv Mora-Alvarado, Darner
Alfaro-Arrieta, Ernesto
Alfaro-Lara, Juan José
author Mora-Alvarado, Darner
author_facet Mora-Alvarado, Darner
Alfaro-Arrieta, Ernesto
Alfaro-Lara, Juan José
author_role author
author2 Alfaro-Arrieta, Ernesto
Alfaro-Lara, Juan José
author2_role author
author
dc.subject.none.fl_str_mv Coliformes termotolerantes
río Tárcoles
contaminación
río Torres
fecal
Thermotolerant coliforms
Tárcoles river
pollution
Torres river
fecal
topic Coliformes termotolerantes
río Tárcoles
contaminación
río Torres
fecal
Thermotolerant coliforms
Tárcoles river
pollution
Torres river
fecal
description This study presents the influence in terms of fecal contamination indicators that the effluent from the Los Tajos Wastewater Treatment Plant (Los Tajos WWTP) has on the Torres River bed and the mouth of the Virilla-Tárcoles basin. The simples were taken in foir points,; the first 200 meters before the effluent of the Los Tajos WWTP, the second in the effluent of the Los Tajos WWTP, the third 200 meters after the effluent of the Los Tajos WWTP and the fourth located under the Tárcoles River bridge, 600 meters from the mouth of the river of the same name. Sampling was carried out to determine the most probable number of thermotolerant (fecal) coliforms and E. coli from the years 2017-2018, with the purpose of knowing the impact of fecal contamination caused by the Los Tajos WWTP effluent and then using it in accordance with the annual flows of raw water to be treated in the years from 2017 to 2025. The results of the estimates indicate that, by increasing the flow of raw water per year, in 2025 with a flow of 2065.64 l/s, the contamination fecal flow from the mouth of the Virilla-Tárcoles Basin will go from 9,400 CF/100 mL in 2016 to 254,656 CF/100 mL in 2025. However, it is important to note that the estimates of the increase in flow are not in reality increased as projected for the years from 2019 to 2023. However, it is always necessary to advance the construction of the second stage of the Los Tajos WWTP with the development and operation of biological or secondary treatment, in order to remove instead of 40 % of the organic matter in the raw waters to 70%, which will mitigate the contamination of the streams of the aforementioned Virilla-Tárcoles Basin.
publishDate 2024
dc.date.none.fl_str_mv 2024-12-21
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
artículo original
http://purl.org/coar/resource_type/c_2df8fbb1
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://revistas.tec.ac.cr/index.php/tec_marcha/article/view/7171
10.18845/tm.v37i8.7171
url https://revistas.tec.ac.cr/index.php/tec_marcha/article/view/7171
identifier_str_mv 10.18845/tm.v37i8.7171
dc.language.none.fl_str_mv spa
language spa
dc.relation.none.fl_str_mv https://revistas.tec.ac.cr/index.php/tec_marcha/article/view/7171/7470
dc.rights.none.fl_str_mv Derechos de autor 2024 Revista Tecnología en Marcha
https://creativecommons.org/licenses/by-nc-nd/4.0
acceso abierto
http://purl.org/coar/access_right/c_abf2
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Derechos de autor 2024 Revista Tecnología en Marcha
https://creativecommons.org/licenses/by-nc-nd/4.0
acceso abierto
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Editorial Tecnológica de Costa Rica (entidad editora)
publisher.none.fl_str_mv Editorial Tecnológica de Costa Rica (entidad editora)
dc.source.none.fl_str_mv Tecnología en marcha Journal; 2024: Vol. 37. Edición especial Laboratorio Nacional de Aguas; Pág. 97-109
Revista Tecnología en Marcha; 2024: Vol. 37. Edición especial Laboratorio Nacional de Aguas; Pág. 97-109
2215-3241
0379-3982
reponame:Portal de Revistas TEC
instname:Instituto Tecnológico de Costa Rica
instacron:ITCR
instname_str Instituto Tecnológico de Costa Rica
instacron_str ITCR
institution ITCR
reponame_str Portal de Revistas TEC
collection Portal de Revistas TEC
repository.name.fl_str_mv Portal de Revistas TEC - Instituto Tecnológico de Costa Rica
repository.mail.fl_str_mv
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spelling Analysis of the quality of the Tárcoles River basin and the Torres River microbasin: influence of the effluent from the Los Tajos WWTP and expectations by 2025Análisis de la calidad de la cuenca del Río Tárcoles y la microcuenca del Río Torres: influencia del efluente de la PTAR Los Tajos y espectativas al 2025Mora-Alvarado, DarnerAlfaro-Arrieta, ErnestoAlfaro-Lara, Juan JoséColiformes termotolerantesrío Tárcolescontaminaciónrío TorresfecalThermotolerant coliformsTárcoles riverpollutionTorres riverfecalThis study presents the influence in terms of fecal contamination indicators that the effluent from the Los Tajos Wastewater Treatment Plant (Los Tajos WWTP) has on the Torres River bed and the mouth of the Virilla-Tárcoles basin. The simples were taken in foir points,; the first 200 meters before the effluent of the Los Tajos WWTP, the second in the effluent of the Los Tajos WWTP, the third 200 meters after the effluent of the Los Tajos WWTP and the fourth located under the Tárcoles River bridge, 600 meters from the mouth of the river of the same name. Sampling was carried out to determine the most probable number of thermotolerant (fecal) coliforms and E. coli from the years 2017-2018, with the purpose of knowing the impact of fecal contamination caused by the Los Tajos WWTP effluent and then using it in accordance with the annual flows of raw water to be treated in the years from 2017 to 2025. The results of the estimates indicate that, by increasing the flow of raw water per year, in 2025 with a flow of 2065.64 l/s, the contamination fecal flow from the mouth of the Virilla-Tárcoles Basin will go from 9,400 CF/100 mL in 2016 to 254,656 CF/100 mL in 2025. However, it is important to note that the estimates of the increase in flow are not in reality increased as projected for the years from 2019 to 2023. However, it is always necessary to advance the construction of the second stage of the Los Tajos WWTP with the development and operation of biological or secondary treatment, in order to remove instead of 40 % of the organic matter in the raw waters to 70%, which will mitigate the contamination of the streams of the aforementioned Virilla-Tárcoles Basin.En este estudio se presenta la influencia en términos de indicadores de contaminación fecal que posee el efluente de la Planta de Tratamiento de Aguas Residuales Los Tajos (PTAR Los Tajos) sobre el cauce del río Torres y la desembocadura de la cuenca Virilla-Tárcoles. Se ubicaron cuatro puntos de muestreo; el primero, 200 metros antes de la descarga de la PTAR Los Tajos, el segundo en el propio efluente de la PTAR Los Tajos, el tercero 200 metros después de la descarga de la PTAR Los Tajos y el cuarto ubicado debajo del puente del Río Tárcoles, a 600 metros de la desembocadura del río del mismo nombre. Se realizaron muestreos para determinar el número más probable de coliformes termotolerantes (fecales) y E. coli de los años 2017-2018, con el propósito de conocer el impacto de contaminación fecal causado por el efluente PTAR Los Tajos y utilizar luego de conformidad con los caudales anuales de aguas crudas a tratar en los años del periodo 2017 al 2025. Los resultados de las estimaciones indican que, al aumentar el caudal de aguas crudas por año, en el 2025 con un caudal de 2065,64 l/s, la contaminación fecal de la desembocadura de la Cuenca Virilla-Tárcoles pasará de 9400 CF/100 mL en el 2016 a 254.656 CF/100 mL en el 2025. No obstante, es importante anotar, que las estimaciones del aumento del caudal, en la realidad no se incrementaron como se proyectaron para los años del 2019 al 2023. Sin embargo, siempre es necesario adelantar la construcción de la segunda etapa de la PTAR Los Tajos con el desarrollo y operación del tratamiento biológico o secundario, con el fin de remover en lugar del 40% de la materia orgánica de las aguas crudas a un 70%, lo cual permitirá mitigar la contaminación de los riachuelos de la mencionada Cuenca Virilla-Tárcoles.Editorial Tecnológica de Costa Rica (entidad editora)2024-12-21info:eu-repo/semantics/publishedVersionartículo originalhttp://purl.org/coar/resource_type/c_2df8fbb1info:eu-repo/semantics/articleapplication/pdfhttps://revistas.tec.ac.cr/index.php/tec_marcha/article/view/717110.18845/tm.v37i8.7171Tecnología en marcha Journal; 2024: Vol. 37. Edición especial Laboratorio Nacional de Aguas; Pág. 97-109Revista Tecnología en Marcha; 2024: Vol. 37. Edición especial Laboratorio Nacional de Aguas; Pág. 97-1092215-32410379-3982reponame:Portal de Revistas TECinstname:Instituto Tecnológico de Costa Ricainstacron:ITCRspahttps://revistas.tec.ac.cr/index.php/tec_marcha/article/view/7171/7470Derechos de autor 2024 Revista Tecnología en Marchahttps://creativecommons.org/licenses/by-nc-nd/4.0acceso abiertohttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccess2025-09-08T16:44:09Zoai:ojs.pkp.sfu.ca:article/7171opendoar:2025-09-08T16:44:09Portal de Revistas TEC - Instituto Tecnológico de Costa Ricafalse
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