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dc.contributor.authorPérez Foguet, Agustí
dc.contributor.authorPascual-Ferrer, J
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
dc.date.accessioned2015-03-12T13:21:27Z
dc.date.available2015-03-12T13:21:27Z
dc.date.created2007
dc.date.issued2007
dc.identifier.citationPérez-Foguet, A.; Pascual-Ferrer, J. Numerical modeling of biochemical transport processes with heterogeneous source terms. Application to wastewater models. A: Congresso de Métodos Numéricos em Engenharia. "Métodos numéricos e computacionais em engenharia: CMNE CILAMCE 2007". Oporto: 2007, p. 1-16.
dc.identifier.isbn978-972-8953-16-4
dc.identifier.urihttp://hdl.handle.net/2117/26680
dc.description.abstractSubsurface flow constructed wetlands are one of the different types of wastew- ater treatments used nowadays. There, water is treated by physical, biological and chem- ical processes while flowing through a porous media. Many aspects of detailed processes which take place there are not well-known. In fact, a key point of their behavior is that simultaneously aerobic and anaerobic conditions take place in different parts of the do- main. Mathematically the problem is a Convection – Diffusion – Reaction system of equations, highly coupled because of the nonlinear reaction term that models the biochem- ical processes. An stabilized Galerkin formulation is used for spatial discretization, and the Runge-Kutta-Fehlberg 4-5 scheme is used for time integration. Homogeneous exam- ples with and without oxygen entrance throughout all domain have been used to check the numerical performance of the approach. The Activated Sludge Model No.1 (ASM1) and a six–equations model based on it are used as examples of complex reaction models. Two dimensional examples with oxygen entrance in just part of the domain have been also computed. It has been check that under horizontal low–velocity conditions a discontinuity in oxygen vertical profile is found, even if continuous transition in oxygen entrance is imposed. In this situation, classical convection stabilization has shown to be usefulness to smooth discontinuities produced by source terms. Further numerical improvements needed are indicated, as well as an extension to more realistic biochemical models for subsurface flow constructed wetlands
dc.format.extent16 p.
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes numèrics
dc.subject.lcshNonlinear integral equations
dc.subject.otherHeterogeneous biochemical treatments
dc.subject.otherASM1 model
dc.subject.otherTwo dimensional sim- ulations
dc.subject.othernonlinear Convection – Diffusion – Reaction equations
dc.subject.otherStabilized Finite Element schemes
dc.titleNumerical modeling of biochemical transport processes with heterogeneous source terms. Application to wastewater models
dc.typeConference report
dc.subject.lemacAnàlisi matemàtica
dc.contributor.groupUniversitat Politècnica de Catalunya. EScGD - Engineering Sciences and Global Development
dc.description.peerreviewedPeer Reviewed
dc.subject.ams45G Nonlinear integral equations
dc.rights.accessOpen Access
local.identifier.drac2442347
dc.description.versionPostprint (published version)
local.citation.authorPérez-Foguet, A.; Pascual-Ferrer, J.
local.citation.contributorCongresso de Métodos Numéricos em Engenharia
local.citation.pubplaceOporto
local.citation.publicationNameMétodos numéricos e computacionais em engenharia: CMNE CILAMCE 2007
local.citation.startingPage1
local.citation.endingPage16


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