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dc.contributor.authorWaki, Miyoko
dc.contributor.authorYasuda, Tomoko
dc.contributor.authorFukumoto, Yasuyuki
dc.contributor.authorBéline, Fabrice
dc.contributor.authorMagrí Aloy, Albert
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Agroalimentària i Biotecnologia
dc.identifier.citationWaki, M., Yasuda, T., Fukumoto, Y., Béline, F., Magrí, A. Treatment of swine wastewater in continuous activated sludge systems under different dissolved oxygen conditions: Reactor operation and evaluation using modelling. "Bioresource technology", 1 Febrer 2018, vol. 250, p. 574-582.
dc.description.abstractSwine wastewater was treated in two continuously aerated activated sludge (AS) systems at high (AS1: 1.7–2.6 mg/L) and low (AS2: 0.04–0.08 mg/L) dissolved oxygen (DO), and at three temperatures (10, 20, and 30 °C). Biochemical oxygen demand (BOD) removal was >94.8%. Meanwhile, total nitrogen (N) removal was significantly higher in AS2, at 64, 89, and 88%, than in AS1, at 12, 24, and 46%, for 10, 20, and 30 °C, respectively. The experimental data were considered in a simulation study using an AS model for BOD and N removal, which also included nitrite, free ammonia, free nitrous acid, and temperature. Simulations at high-DO showed that ammonium was partly oxidized into nitrate but not removed, whereas at low-DO ammonium was removed mainly through the nitrite shortcut in simultaneous nitrification–denitrification. This study demonstrates that treatment at low-DO is an effective method for removing N, and modelling a helpful tool for its optimization.
dc.format.extent9 p.
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Desenvolupament humà i sostenible::Enginyeria ambiental::Tractament dels residus
dc.subject.lcshAgriculture--Environmental aspects
dc.subject.otherActivated sludge model (ASM)
dc.subject.otherDO control
dc.subject.otherNitrite shortcut
dc.subject.otherNitrogen removal
dc.subject.otherSimultaneous nitrification and denitrification (SND)
dc.titleTreatment of swine wastewater in continuous activated sludge systems under different dissolved oxygen conditions: Reactor operation and evaluation using modelling
dc.subject.lemacResidus agrícoles -- Gestió
dc.rights.accessRestricted access - author's decision
dc.description.versionPostprint (published version)
local.citation.authorWaki, M.; Yasuda, T.; Fukumoto, Y.; Béline, F.; Magrí, A.
local.citation.publicationNameBioresource technology

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