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Sludge management modeling to enhance P-recovery as struvite in wastewater treatment plants

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Sludge management modeling to enhance P-recovery as struvite in wastewater treatment plants

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dc.contributor.author Martí Ortega, Nuria es_ES
dc.contributor.author Barat, Ramón es_ES
dc.contributor.author Seco Torrecillas, Aurora es_ES
dc.contributor.author Pastor Alcañiz, Laura es_ES
dc.contributor.author Bouzas Blanco, Alberto es_ES
dc.date.accessioned 2020-08-01T03:30:42Z
dc.date.available 2020-08-01T03:30:42Z
dc.date.issued 2017-07-01 es_ES
dc.identifier.issn 0301-4797 es_ES
dc.identifier.uri http://hdl.handle.net/10251/149155
dc.description.abstract [EN] Interest in phosphorus (P) recovery and reuse has increased in recent years as supplies of P are declining. After use, most of the P remains in wastewater, making Wastewater Treatment Plants (WWTPs) a vital part of P recycling. In this work, a new sludge management operation was studied by modeling in order to recover Pin the form of struvite and minimize operating problems due to uncontrolled P precipitation in WWTPs. During the study, intensive analytical campaigns were carried out on the water and sludge lines. The results identified the anaerobic digester as a "hot spot" of uncontrolled P precipitation (9.5 gP/kg sludge) and highlighted possible operating problems due to the accumulation of precipitates. A new sludge line management strategy was simulated therefore using DESASS (c) software, consisting of the elutriation of the mixed sludge in the mixing chamber, to reduce uncontrolled P precipitation and to obtain a P-rich stream (primary thickener supernatant) to be used in a crystallization process. The key operating parameters were found to be: the elutriation flow from the mixing chamber to the primary thickener, the digestion flow and the sludge blanket height of the primary thickener, with optimized values between 70 and 80 m(3)/d, 90-100 m(3)/d and 1.4-1.5 m, respectively. Under these operating conditions, the preliminary results showed that P concentration in the primary thickener overflow significantly increased (from 38 to 100 mg PO4-P/L), which shows that this stream is suitable for use in a subsequent crystallization reactor to recover P in the form of struvite. (C) 2017 Elsevier Ltd. All rights reserved. es_ES
dc.description.sponsorship This work was co-financed by the European Financial Instrument for the Environment (LIFE +) as part of the PHORWater Project (LIFE12 ENV/ES/000441). es_ES
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation EC/LIFE12 ENV/ES/000441 es_ES
dc.relation.ispartof Journal of Environmental Management es_ES
dc.rights Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) es_ES
dc.subject Nutrient recovery es_ES
dc.subject Sludge treatment es_ES
dc.subject Crystallization es_ES
dc.subject Uncontrolled precipitation es_ES
dc.subject Urban WWTP es_ES
dc.subject.classification TECNOLOGIA DEL MEDIO AMBIENTE es_ES
dc.title Sludge management modeling to enhance P-recovery as struvite in wastewater treatment plants es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.jenvman.2016.12.074 es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ingeniería Hidráulica y Medio Ambiente - Departament d'Enginyeria Hidràulica i Medi Ambient es_ES
dc.description.bibliographicCitation Martí Ortega, N.; Barat, R.; Seco Torrecillas, A.; Pastor Alcañiz, L.; Bouzas Blanco, A. (2017). Sludge management modeling to enhance P-recovery as struvite in wastewater treatment plants. Journal of Environmental Management. 196:340-346. https://doi.org/10.1016/j.jenvman.2016.12.074 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1016/j.jenvman.2016.12.074 es_ES
dc.description.upvformatpinicio 340 es_ES
dc.description.upvformatpfin 346 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 196 es_ES
dc.identifier.pmid 28324850 es_ES
dc.relation.pasarela 325875 es_ES
dc.contributor.funder European Commission es_ES


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