Simulation assisted process simplification and energy recovery from a cryptic biological nutrient removal plant

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dc.contributor.authorBodur, Minel
dc.contributor.authorErgin, Samet
dc.contributor.authorAlkay, Taner
dc.contributor.authorKahraman, Seher
dc.contributor.authorSelvi, Ercan
dc.contributor.authorOzyildiz, Goksin
dc.contributor.authorKaraagac, Sakine Ugurlu
dc.date.accessioned2024-09-29T15:57:48Z
dc.date.available2024-09-29T15:57:48Z
dc.date.issued2024
dc.departmentKarabük Üniversitesien_US
dc.description.abstractIn this study, simulation-based analysis is conducted for nitrogen removal mechanism in a biological nutrient removal plant designed in an encrypted manner. In the first phase, the simulation study elucidates how nitrogen removal occurs in a complex design using a series of 4 carousel bioreactors with additional nitrate recycle. It is demonstrated that pre-anoxic volume fed with limited internal recirculation only would not be sufficient to meet the discharge Total Nitrogen (TN) limit of 10 mg N/L. However, the addition of simultaneous nitrification-denitrification (SND) processes in aerobic reactors enables compliance with TN discharge limits. In the second phase, the configuration is simplified by means of process simulation, where the complex design is streamlined by eliminating internal recycle while achieving nitrogen removal through the SND process. Plant data confirmed that the simplified configuration can achieve nitrogen removal providing the same discharge quality. The simulations resulted that TN concentration achieved at the plant effluent is comparable, while effluent total phosphorus concentration is decreased by approximately 50 % due to increased activity of Phosphorus Accumulating Organisms (PAOs) under reduced sludge retention time (SRT). In the third phase, the application of the SND process in the field using a simplified and new activated sludge configuration yields similar results to the simulation. According to plant records, 28 % energy savings and an equivalent chemical cost reduction of euro945,000 per year were achieved with the new process configuration.en_US
dc.identifier.doi10.1016/j.jwpe.2023.104760
dc.identifier.issn2214-7144
dc.identifier.scopus2-s2.0-85182383570en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.jwpe.2023.104760
dc.identifier.urihttps://hdl.handle.net/20.500.14619/5021
dc.identifier.volume58en_US
dc.identifier.wosWOS:001159412400001en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofJournal of Water Process Engineeringen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectDissolved oxygen controlen_US
dc.subjectPlant upgradeen_US
dc.subjectEncrypted designen_US
dc.subjectDenitrification potentialen_US
dc.subjectSimultaneous nitrificationen_US
dc.subjectDenitrificationen_US
dc.titleSimulation assisted process simplification and energy recovery from a cryptic biological nutrient removal planten_US
dc.typeArticleen_US

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