Per citar aquest document: http://ddd.uab.cat/record/163067
Long term operation of a thermophilic anaerobic reactor : process stability and efficiency at decreasing sludge retention time
Ferrer Martí, Ivet (Escola Tècnica Superior d'Enginyeria Industrial de Barcelona. Departament d'Enginyeria Hidràulica, Marítima i Ambiental)
Vázquez Lima, Felícitas (Institut de Biotecnologia i de Biomedicina "Vicent Villar Palasí")
Font i Segura, Xavier (Universitat Autònoma de Barcelona. Departament d’Enginyeria Química)

Data: 2009
Resum: The aim of this study was to evaluate the performance of thermophilic sludge digestion at decreasing sludge retention time (SRT) and increasing organic loading rate (OLR), in terms of methane production, effluent stabilisation, hygienisation and dewaterability. Focus was put on determining indicators to help prevent process failure. To this end, a lab-scale reactor was operated for nearly 2 years at 55 °C. Methane production rate was increased (from 0. 2 to 0. 4–0. 6 m³CH₄ m⁻³reactor d⁻¹) by decreasing the SRT from 30 to 15–10 days, while increasing the OLR from 0. 5 to 2. 5–3. 5 kg VS m⁻³reactor d⁻¹. Sludge dewaterability was worsened at SRT below 15 days; while pathogen destruction was always successful. The following concentrations might be used to prevent process failure: VFA C2–C5 (3. 7 g COD L⁻¹), acetate (0. 6 g L⁻¹), acetate/propionate (0. 5), intermediate alkalinity (1. 8 g CaCO₃ L⁻¹), intermediate/partial alkalinity (0. 9), intermediate/total alkalinity (0. 5), CH₄ in biogas (55%).
Nota: Número d'acord de subvenció MCYT/REN2002-00926/TECNO
Drets: Tots els drets reservats
Llengua: Anglès
Document: article ; recerca ; submittedVersion
Matèria: Biogas ; Biosolids ; Dewaterability ; Hygienisation ; Wastewater
Publicat a: Bioresource technology, Vol. 101, Issue 9 (May 2019) , p. 2972–2980, ISSN 0960-8524

DOI: 10.1016/j.biortech.2009.12.006


Pre-print
35 p, 976.0 KB

El registre apareix a les col·leccions:
Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Enginyeries > Grup de Recerca en Compostatge (GICOM)
Articles > Articles de recerca
Articles > Articles publicats

 Registre creat el 2016-07-21, darrera modificació el 2016-10-24



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