Evaluación del comportamiento geotécnico de suelos volcánicos chilenos para su uso como material de filtro en la depuración de aguas residuales domésticas

Sanhueza, Cristobal T.; Palma, Jorge; Valenzuela, Patricio Hernández; Araneda, Oscar; Calderón, Kadiya

doi:10.4067/s0718-915x2011000200007

Cited by 4 publications

(4 citation statements)

References 11 publications

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“…However, due to their geotechnical characteristics, these soils are not commonly used as embankment construction material. Furthermore, it is reported their usage as a filter material for water treatments [7,8]. For these applications, the changes in the physical properties after oven-drying could affect the capacities of the filters and should be taken into consideration.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Influence of Oven-Drying on the Geotechnical Properties of Volcanic Ash-Derived Residual Soils

et al. 2021

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For thousands of years, the volcanic activity present along the Andes Mountain range has generated a large amount of pyroclastic material. As a result, around 60 percent of the soils present in Chile have a volcanic origin, of which, we can find soils derived from volcanic ash. These correspond to soils whose origin is the weathering of volcanic ash, which generates minerals such as allophane, imogolite, and halloysite. The presence of these minerals gives these soils unique geotechnical properties, such as high plasticity, low dry unit weight, and a unique internal structure. Subjecting these soils to extreme temperatures like those needed to perform standard laboratory tests produces changes in their structures, and thus in their geotechnical behavior. These changes are important to be aware of with respect to slope stability problems, embankment conformation, surface foundations, etc. In the present study, a type of soil found in Chile originating from the weathering of volcanic ash and locally named Trumao was studied. Due to its age and formation processes, the main minerals found in the soil are allophane and imogolite, and hence it belongs to the allophanic soil type. The material was studied in its natural state (undisturbed) and, after being oven-dried using common geotechnical tests, the behaviors of both samples were compared. The study shows that some properties are affected significantly by the oven-drying process, and thus it is not recommended to expose the material to high temperatures during geotechnical laboratory testing to avoid misleading results.

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Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Influence of Oven-Drying on the Geotechnical Properties of Volcanic Ash-Derived Residual Soils

et al. 2021

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“…Adicionalmente, se pueden encontrar ciertos tipos de plantas en los humedales que contribuyen al tratamiento de aguas residuales, estabilizan el sustrato, dan lugar a bajas velocidades del agua, permitiendo que los materiales suspendidos se depositen, mientras que el tallo y las raíces dan lugar a sitios para la fijación de microorganismos, favoreciendo el proceso de filtración y sedimentación ( papel de sostén para las plantas y el abono orgánico es una capa superficial de suelo en descomposición, rica en microorganismos y nutrientes [17].…”

Section: A Introducciónunclassified

“…Se emplearon 4 tipos de suelo: roca volcánica mineral, arena de río, suelo fértil y suelo abonado (ver Figura 1.). Fueron escogidos por sus propiedades físicas y químicas, que retienen impurezas y sirven como filtros naturales de purificación de agua(Sanhueza, et al, 2011) [17].Fuente.Autores…”

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Construcción y evaluación de la eficiencia de dos prototipos de humedal artificial para el tratamiento de aguas residuales domésticas provenientes de la Universidad El Bosque

Guevara

Arias

Plata

et al. 2017

RevTec

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Los humedales artificiales son sistemas de depuración que reproducen procesos de tratamiento de agua y reducción de contaminantes que tienen lugar en humedales naturales. La finalidad de este proyecto es evaluar la eficiencia de los humedales artificiales en el tratamiento de agua residual proveniente de la Universidad El Bosque (sede Usaquén) para reutilizarla en riego de plantas y descarga de retretes.En el proyecto se utilizó el prototipo de humedal artificial subsuperficial de flujo vertical para tratar agua residual doméstica (ARD), donde los modelos construidos contenían tres tipos de plantas, cuatro tipos de suelos y un cultivo de microorganismos eficientes (EM), agregado en uno de ellos, que se dejaron durante un periodo de adaptación a este nuevo ambiente aproximadamente de un mes, para posteriormente poder evaluar los parámetros físicos, químicos y microbiológicos del agua residual . Finalmente se obtuvo un cambio favorable en las muestras tratadas comparándolos con los valores máximos permisibles que dicta la resolución 1207 de 2014 y el decreto 0631 de 2015 del Ministerio de Ambiente y Desarrollo Sostenible, además se demuestra una mayor eficiencia del humedal que contenía los EM.

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“…La actividad volcánica desarrollada durante siglos ha permitido la formación y acumulación de grandes cantidades de cenizas volcánicas permitiendo la formación de una importante extensión de suelos derivados de este tipo de materiales (Sanhueza et al, 2011). El proceso de formación de estos suelos, se inicia con la generación de una nube de piroclastos durante una erupción volcánica, conformada por partículas inferiores a 2 mm conocidas como cenizas volcánicas (Lizcano et al, 2006).…”

Section: Introductionunclassified

Efecto de cenizas volcánicas del Cordón Caulle sobre parámetros de calidad física en suelos agrícolas del sur de Chile

González¹,

Dec²,

Valle³

et al. 2015

agrosur

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Chile is exposed to the constant activity of their volcanoes, which during the eruptions released ashes that had formed soils of south-central Chile (Andisols) during the holocene. The last June of 2011, Cordon Caulle volcano recorded eruptive activity, releasing a great quantity of volcanic materials that were deposited on soils under different land uses, generating environmental problems and uncertainties among farmers for its handling. The aim of this study was to evaluate the effect of the incorporation of these ashes on some physical quality indicators in 6 soil series of southern Chile (five Andisols and one Ultisol). For this, mixes of soil/ashes were used (regarding loads of 0, 5 and 10 cm of ashes height) to assemble soil cores of 230 cm 3. The organic matter content (MO), particle density (Dr), soil texture, pF curve and air conductivity (kl) were determined. As ashes concentration increased, the sand content increased and, the clay and organic matter contents decreased, inducing an increase in soil particle density. The plant available water increased with the ashes incorporation, which is related to the associated textural changes. kl increased in all soil series due to incorporation of volcanic ashes, with the exception of the Cudico Series, which suggest the analyses of the effect of wetting and drying cycles on soil structure after the incorporation of volcanic ashes.

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Evaluación del comportamiento geotécnico de suelos volcánicos chilenos para su uso como material de filtro en la depuración de aguas residuales domésticas

Cited by 4 publications

References 11 publications

Experimental Investigation on the Influence of Oven-Drying on the Geotechnical Properties of Volcanic Ash-Derived Residual Soils

Experimental Investigation on the Influence of Oven-Drying on the Geotechnical Properties of Volcanic Ash-Derived Residual Soils

Construcción y evaluación de la eficiencia de dos prototipos de humedal artificial para el tratamiento de aguas residuales domésticas provenientes de la Universidad El Bosque

Efecto de cenizas volcánicas del Cordón Caulle sobre parámetros de calidad física en suelos agrícolas del sur de Chile

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