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dc.contributor.authorSánchez Fernández, Francisco es_ES
dc.contributor.authorSánchez Kaiser, Antonio es_ES
dc.contributor.authorViedma Robles, Antonio es_ES
dc.contributor.authorGómez Fayrén, Antonio es_ES
dc.date.accessioned2016-09-27T08:53:11Z
dc.date.available2016-09-27T08:53:11Z
dc.date.issued2015-04
dc.identifier.citationF. Sánchez, A.S. Kaiser, A. Viedma & A. Gómez “Effects of the aeration on the fluid dynamic behaviour of a multi-zone activated sludge system”, 8th lnternational Conference on Multiphase Flow 2015, 20 -22 April 2015, Valencia, Spaines_ES
dc.description.abstractConventional wastewater treatment plants (WWTP) are necessary to modify the wastewater properties in order to turn it acceptable for a safe discharge into the environment or a certain reuse purpose. Biological oxidation is the most important of the processes involved in conventional WWTP. Organic substances dissolved in the water are removed by means of bacteria presented in the biological reactor. Air is necessary to enable the reduction of the organic content of the water by the bacteria. Bubbles of air are introduced into the reactor through air diffusers. Air diffusers can account up to 70% of WWTP total energy consumption. So a deep understanding of the dynamic behaviour of the flow is necessary for optimizing the process and saving energy. A numerical analysis of the effects of the aeration in the fluid dynamics behaviour of a real multi‐zone activated sludge reactor is carried out. The purpose is to identify and analyse the changes originated in the velocity field by the aeration. A numerical modelling of the activated sludge system located in San Pedro del Pinatar (Murcia, Spain) is developed throughout a general-purpose CFD code. The multiphase flow is simulated with an Euler‐Lagrange approach; modelling the bubbles as discrete phase. Two simulations, one with aeration and the other without it, are carried out. The numerical results show that the aeration has a notable effect in the performance of the reactor. Changes in velocity field, stagnant zones, residence time distribution or even free surface level originated by the aeration in the reactor are studied. In general, the aeration reduced the amount of stagnant volume in the reactor. However, when the aeration is activated, some re‐circulating zones are formed, reducing the residence time in the reactor.es_ES
dc.description.sponsorshipThe researcher team of the present work acknowledges the contribution of the company ESAMUR, owner of the biological reactor studied, which provided the experimental data necessary for the development of the numerical model presented.es_ES
dc.formatapplication/pdfes_ES
dc.language.isoengen
dc.titleEffects of the aeration on the fluid dynamic behaviour of a multi-zone activated sludge system.es_ES
dc.typeinfo:eu-repo/semantics/conferenceObjectes_ES
dc.typeinfo:eu-repo/semantics/conferenceObjectes_ES
dc.subjectNumerical modellinges_ES
dc.subjectWastewater Treatment Plantes_ES
dc.subjectActivated Sludge Systemes_ES
dc.subjectAir bubbles-water interactiones_ES
dc.subject.otherMecánica de Fluidoses_ES
dc.identifier.urihttp://hdl.handle.net/10317/5500
dc.contributor.investgroupMecánica de Fluidos e Ingeniería Térmicaes_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses
dc.subject.unesco3308.10 Tecnología de Aguas Residualeses_ES


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