Análisis de la movilización de sólidos en suspensión en una cuenca urbana separativa mediante la aplicación del muestreo en continuo de la turbidez

Anta, José; Cagiao, Juan; Suárez, Joaquín

doi:10.4995/ia.2009.2952

Cited by 4 publications

(8 citation statements)

References 10 publications

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“…Pollutograph is modeled through the former index variables together with the pollutographs time to descent, TDP, proposed in Equation (10). Ascent and descent curves are proposed in Equations (9) and (11). Pollutographs estimated through this methodology agree reasonably well with the measured ones during the registered events ( Figure 9).…”

Section: Discussionsupporting

confidence: 53%

“…Figure 9 shows some of the measured pollutographs. They are compared with the pollutographs obtained by Equations (9)- (11). Results show a good agreement between measured and calculated pollutographs; therefore, the proposed methodology is suitable for estimating pollutographs from indexes.…”

Section: Development Of Pollutographs From Prediction Indexesmentioning

confidence: 98%

“…Equation (11), when n = Na, ln(n − Na + 1) = 0, and Ca = Cd = CMAXtb, assures continuity. Figure 9 shows some of the measured pollutographs.…”

Section: Development Of Pollutographs From Prediction Indexesmentioning

confidence: 99%

“…The descent line of the pollutographs can be adjusted to a logarithmic function: (11) where N d is the number of intervals of five minutes in which the descent time is divided; n indicates the interval (N a ≤ n ≤ N d ) in units of five minutes; and C d and C TStb are the turbidity values at each n interval and at the end of the event, corresponding to TDP time, respectively (measured in NTU). Equation (11), when n = N a , ln(n − N a + 1) = 0, and C a = C d = C MAXtb , assures continuity.…”

Section: Development Of Pollutographs From Prediction Indexesmentioning

confidence: 99%

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Urban Runoff Characteristics in Combined Sewer Overflows (CSOs): Analysis of Storm Events in Southeastern Spain

García

Espín-Leal

Vigueras-Rodríguez

et al. 2017

Water

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Storm water overflows have an important impact on the environment in many European countries. Nowadays, a better knowledge of combined sewer overflows (CSOs) pollution is required for implementing measures to reduce these emissions. In this work, pollution flows mobilized during rainy events have been monitored and modeled in two urban catchments located in the city of Murcia (southeast Spain). For each analyzed event, rainfall volume, in-sewer turbidity and water flow depth have been continuously measured. Therefore, sets of pollutographs and hydrographs have been obtained for each event analyzed. Characteristic variables have been defined and obtained for each event such as the maximum concentration of turbidity, the total event rainfall, the previous dry weather period, the time to the peak of the hydrograph and to the peak of the pollutograph, among others. Relations between variables have been adjusted through a statistical model. The adjusted parameters are used to generate pollutographs that are compared with those measured in field. The present work provides tools to assist in the knowledge of pollution transported through sewer network during stormy events, suggesting the creation of design pollutographs which may facilitate the evaluation of measures to reduce urban runoff pollution.

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Section: Discussionsupporting

confidence: 53%

Section: Development Of Pollutographs From Prediction Indexesmentioning

confidence: 98%

“…Equation (11), when n = Na, ln(n − Na + 1) = 0, and Ca = Cd = CMAXtb, assures continuity. Figure 9 shows some of the measured pollutographs.…”

Section: Development Of Pollutographs From Prediction Indexesmentioning

confidence: 99%

Section: Development Of Pollutographs From Prediction Indexesmentioning

confidence: 99%

See 2 more Smart Citations

Urban Runoff Characteristics in Combined Sewer Overflows (CSOs): Analysis of Storm Events in Southeastern Spain

García

Espín-Leal

Vigueras-Rodríguez

et al. 2017

Water

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“…Esto no ocurre con la conductividad, que para efectos de consumo humano no representó riesgo en ninguna de las temporadas. La turbiedad evaluada presentó marcadas oscilaciones que muestran las condiciones de vulnerabilidad a las que estuvo expuesta la cuenca alta del río Combeima, producto de procesos erosivos cuya génesis se dio por la dinámica natural y por actividades antrópicas lesivas, desde las cuales se liberaron sedimentos con caracterís-ticas de sólidos en suspensión y coloides, arrastrados al cuerpo de agua por la escorrentía del agua lluvia, tal como lo señalan Anta et al con respecto a la correlación entre sólidos en suspensión totales y sólidos totales con la turbiedad [45]. El fenómeno de la Niña puede llevar en algunos casos a incrementar la precipitación en dicha cuenca, sumán-dose al aumento de turbiedad.…”

Section: Conclusionesunclassified

Evaluación de la turbiedad y la conductividad ocurrida en temporada seca y de lluvia en el río Combeima (Ibagué, Colombia)

et al. 2016

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Introducción: resultados del proyecto de investigación “Evaluación de cargas contaminantes en el río Combeima, principal fuente de abastecimiento del acueducto urbano de Ibagué”, realizado por la Universidad Cooperativa de Colombia, sede Ibagué. Metodología: se desarrolló una investigación exploratoria que evaluó el comportamiento espacial de la turbiedad y conductividad del río en el 2014, a partir de muestreos de calidad de agua cruda en siete diferentes puntos a lo largo de su cauce. Se llevó a cabo en temporada seca y lluviosa, y su análisis durante el periodo comprendido entre el 2008 y 2012, cuando ocurrieron temporadas secas y lluviosas caracterizadas por los fenómenos naturales de la Niña y el Niño. Resultados: en mayo se presentaron los mayores valores del promedio mensual, periodo que corresponde a la primera temporada de lluvias, de manera que es evidente el aumento progresivo promedio anual. La conductividad no evidenció variaciones anuales; se obtuvieron concentraciones admisibles para consumo humano, en las cuales las condiciones climatológicas no incidieron significativamente en su comportamiento, aun a pesar de presentarse valores variados de turbiedad, a la que no está ligada. Conclusiones: la empresa ibal s.a. e.s.p. planteó una solución a mediano plazo a fin de mitigar el efecto de elevada turbiedad en temporada lluviosa, mediante la realización de un estudio, el diseño y la construcción de bocatomas satélites en las fuentes que, dados su caudal y condiciones operativas, resulten favorables para actuar como sistemas sustitutos en aquellos periodos en que sea imperioso el cierre de la actual bocatoma

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Performing Calibration of Transmittance by Single RGB-LED within the Visible Spectrum

Carreres-Prieto

García

Cerdan

et al. 2020

Sensors

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Spectrophotometry has proven to be an effective non-invasive technique for the characterization of the pollution load of sewer systems, enabling compliance with new environmental protection regulations. This type of equipment has costs and an energy consumption which make it difficult to place it inside a sewer network for real-time and massive monitoring. These shortcomings are mainly due to the use of incandescent lamps to generate the working spectrum as they often require the use of optical elements, such as diffraction gratings, to work. The search for viable alternatives to incandescent lamps is key to the development of portable equipment that is cheaper and with a lower consumption that can be used in different points of the sewer network. This research work achieved the following results in terms of the measured samples: First, the development a calibration procedure that enables the use of RGB-LED technology as a viable alternative to incandescent lamps, within the range of 510 to 645 nm, with high accuracy. Secondly, demonstration of a simple method to model the transmittance value of a specific wavelength without the need for optical elements, achieving a cost-effective equipment. Thirdly, it provides a simple method to obtain the transmittance based on the combination of RGB colors. Finally its viability is demonstrated for the spectral analysis of wastewater.

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Análisis de la movilización de sólidos en suspensión en una cuenca urbana separativa mediante la aplicación del muestreo en continuo de la turbidez

Cited by 4 publications

References 10 publications

Urban Runoff Characteristics in Combined Sewer Overflows (CSOs): Analysis of Storm Events in Southeastern Spain

Urban Runoff Characteristics in Combined Sewer Overflows (CSOs): Analysis of Storm Events in Southeastern Spain

Evaluación de la turbiedad y la conductividad ocurrida en temporada seca y de lluvia en el río Combeima (Ibagué, Colombia)

Performing Calibration of Transmittance by Single RGB-LED within the Visible Spectrum

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