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Listar por palabra clave "Activated sludge"

Mostrando ítems 1-20 de 29

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A hindered settling velocity model related to the fractal dimension and activated sludge flocs characteristics: Application to a sludge with a previous fragmentation and flocculation process

Asensi Dasí, Enrique Javier; Alemany Martínez, Elena (Elsevier, 2022-11-01)

[EN] The modelling of the activated sludge hindered settling velocity as a function of the flocs characteristics and the incorporation of these models to the secondary settling tanks simulation is a hardly studied subject. ...
A multivariate approach of changes in filamentous, nitrifying and protist communities and nitrogen removal efficiencies during ozone dosage in a full-scale wastewater treatment plant

Barbarroja-Ortiz, Paula; Zornoza-Zornoza, Andrés Miguel; Aguado García, Daniel; Borrás Falomir, Luis; Alonso Molina, José Luís (Elsevier, 2019-09)

[EN] The application of low ozone dosage to minimize the problems caused by filamentous foaming was evaluated in two bioreactors of an urban wastewater treatment plant. Filamentous and nitrifying bacteria, as well as protist ...
An innovative approach to the application of ultrasounds to remove polyethylene microspheres from activated sludge

Alvim, Clara; Bes-Piá, M.A.; Mendoza Roca, José Antonio (Elsevier, 2021-06-01)

[EN] During the secondary treatment of Wastewater Treatment Plants (WWTP) previous studies have reported that microplastics (MPs), which correspond to plastic fragments smaller than 5 mm, are mostly retained in the activated ...
Assessment and modelling of the effect of precipitated ferric chloride addition on the activated sludge settling properties

Asensi Dasí, Enrique Javier; Alemany Martínez, Elena; Duque-Sarango, Paola; Aguado García, Daniel (Elsevier, 2019-10)

[EN] This research studies the effect of the widely used coagulant ferric chloride on the activated sludge sedimentability through a vast array of hindered settling tests considering different application modes and a wide ...
Characterization of activated sludge settling properties with a sludge collapse-acceleration stage

Asensi Dasí, Enrique Javier; Alemany Martínez, Elena; SECO TORRECILLAS, AURORA; FERRER, J. (Elsevier, 2019-01-31)

[EN] The sedimentability of the activated sludge can be affected by the presence of a large variety of coagulants and polymers from a previous physical-chemical process. In this paper, the activated sludge settling process ...
Diversity of culturable nocardioform actinomycetes from wastewater treatment plants in Spain and their role in the biodegradability of aromatic compounds

Soler Hernández, Albert; García Hernández, Jorge; Zornoza-Zornoza, Andrés Miguel; Alonso Molina, José Luís (Taylor & Francis, 2017)

[EN] Currently, municipal and industrial wastewater treatment plants (WWTPs) are mainly focusing on reduction of biological oxygen demand and on the removal of nutrients. However, there are microorganisms that interfere ...
Effect of methylisothiazolinone on biological treatments: Efficiency of SBRs and Bioindicative Studies

Amat Payá, Ana María; Arques Sanz, Antonio; López Pérez, Maria Fernanda; Nácher Pastor, Marina; Palacios Guillem, Santiago (Mary Ann Liebert, 2015-06)

Methylisothiazolinone (MIT) is widely used as biocide in hair and skin care products and in high concentrations, more than 150 mg/L, in cooling towers in the paper mill and refinery industry. This product has been recognized ...
Effect of pH and nitrite concentration on nitrite oxidation rate

Jiménez Douglas, Emérita; Giménez García, Juan Bautista; Ruano García, María Victoria; FERRER, J.; Serralta Sevilla, Joaquín (Elsevier, 2011-07-29)

The effect of pH and nitrite concentration on the activity of the nitrite oxidizing bacteria (NOB) in an activated sludge reactor has been determined by means of laboratory batch experiments based on respirometric techniques. ...
Effect of polyethylene microplastics on activated sludge process Accumulation in the sludge and influence on the process and on biomass characteristics

Alvim, C. Bretas; Castelluccio, S.; Ferrer-Polonio, Eva; Bes-Piá, M.A.; Mendoza Roca, José Antonio; Fernández-Navarro, J.; Alonso Molina, José Luís; Amoros, Inmaculada (Elsevier, 2021-04)

[EN] According to previous research, it has been proved that wastewater treatment plants (WWTPs) can retain more than 90 % of the MPs contained in wastewater. However, a significant fraction of the MPs removed in WWTPs is ...
El fango activado como adsorbente de cobre, níquel y cianuro

Castro Rubio, Estefanía; Lloret Salinas, Sergio; Aguado García, Daniel; Barat, Ramón (Infoedita, 2019-10)

[EN] Conventional wastewater treatment plants (WWTP) used to get an insufficient removal of pollutants such as copper, nickel and cyanide, which can affect the aquatic media quality that receiving the final effluent. In ...
Estudio de la influencia de la adición de Cloruro Ferrico en la sedimentabilidad de los fangos activados

DUQUE SARANGO, PAOLA (Universitat Politècnica de València, 2012-11-29)

[ES] El presente trabajo estudia la influencia que tiene la aplicación del coagulante cloruro férrico, mediante procesos de coagulación y floculación previos, en las velocidades de sedimentación zonal de los fangos activados.
Estudio de la reducción en la producción de fangos mediante adición de reactivos químicos en tratamientos de aguas residuales con reactores biológicos secuenciales. Diseño de un reactor para un caudal de 1000 m3/día

Llorca Escrivá, Sara (Universitat Politècnica de València, 2024-10-18)

[ES] En el presente TFG se va a realizar un estudio sobre la reducción en la producción de fango que se genera en el tratamiento secundario en una estación depuradora de aguas residuales (EDAR), mediante la adición de ...
Estudio de la transición entre la sedimentación zonal y floculada mediante la aplicación de técnicas de análisis de imagen

Lera Modino, María (Universitat Politècnica de València, 2021-11-16)

[ES] Existen dos grandes grupos de tratamientos de aguas; la potabilización de las aguas de abastecimiento, cuyo propósito es producir un efluente apto para el consumo humano y la depuración de las aguas residuales, cuyo ...
Evaluación del coeficiente de transferencia de oxígeno en procesos de fangos activados para optimizar la aireación

Ivailova Petkova, Ivana; Solís, J. J.; Bes Piá, Mª Amparo; Aguado García, Daniel (Universitat Politècnica de València, 2020-07-31)

[ES] En una Estación Depuradora de Aguas Residuales (EDAR), el mayor consumo energético es el asociado al sistema de aireación del tratamiento biológico. Esto hace que los estudios relacionados con los sistemas de aireación ...
Evaluación del proceso de nitrificación en un sistema de fangos activos mediante técnicas respirométricas y su relación con bioindicadores y variables de proceso

Pérez Muñoz, Jeisson Alejandro (Universitat Politècnica de València, 2021-12-28)

[ES] La sociedad actual enfrenta una serie de problemas ambientales que se han intensificado a razón del crecimiento exponencial de la población. Dos de los principales problemas ambientales a nivel local son el deterioro ...
Evaluation of adsorption mechanisms of microplastics to activated sludge

Villa Martí, Josep Blai (Universitat Politècnica de València, 2024-09-03)

[CA] En els darrers anys ha hagut una preocupació creixent per la contaminació de plàstics i la seua capacitat de transportar contaminats als ecosistemes aquàtics. El plàstics tarda centenars d anys a descompondre s i, ...
Identification and quantification of microbial populations in activated sludge and anaerobic digestion processes

Reyes Sosa, Mariela Beatriz; Borrás Falomir, Luis; Seco Torrecillas, Aurora; FERRER, J. (Taylor & Francis, 2015-01-02)

Eight different phenotypes were studied in an activated sludge process (AeR) and anaerobic digester AnD) in a full-scale wastewater treatment plant by means of fluorescent in situ hybridization (FISH) and automated FISH ...
Micropollutants removal in an anaerobic membrane bioreactor and in an aerobic conventional treatment plant

Agargues Llamas, Miguel Rafael; Robles Martínez, Ángel; Bouzas Blanco, Alberto; Seco Torrecillas, Aurora (IWA Publishing, 2012)

The paper expresses an attempt to tackle the problem due to the presence of micropollutants in wastewater which may be able to disrupt the endocrine system of some organisms. These kinds of compounds are ubiquitously present ...
Microscopía convencional versus FISH en la identificación y abundancia de los morfotipos filamentosos 0803, 0914 y 0092 en fangos activos

Andujar Gonzalez, Ana Belen; Zornoza-Zornoza, Andrés Miguel; Lledías Aparici, Marta; Alonso Molina, José Luís (Infoedita, 2013)

[ES] El crecimiento excesivo de bacterias filamentosas en fangos activos origina problemas de explotación en las estaciones depuradoras de aguas residuales (EDAR). Por ello, su identificación y cuantificación correcta es ...
Modelling biological and chemically induced precipitation of calcium phosphate in enhanced biological phosphorus removal systems

Barat Baviera, Ramón; Montoya Martínez, Tatiana; Seco Torrecillas, Aurora; FERRER, J. (Elsevier, 2011)

The biologically induced precipitation processes can be important in wastewater treatment, in particular treating raw wastewater with high calcium concentration combined with Enhanced Biological Phosphorus Removal. Currently, ...