Comparison of aerobic and anaerobic stability indices through a MSW biological treatment process
Ponsá Salas, Sergio (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Gea Leiva, Teresa (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Alerm, Llorenç (Entitat Metropolitana de Serveis Hidràulics i Tractament de Residus)
Cerezo, Javier (Ecoparc del Besòs, S. A.)
Sanchez, Antoni (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)

Data:	2008
Resum:	A complex mechanical-biological waste treatment plant designed for the processing of mixed municipal solid wastes (MSW) and source-selected organic fraction of municipal solid wastes (OFMSW) has been studied by using stability indices related to aerobic (respiration index, RI) and anaerobic conditions (biochemical methane potential, BMP). Several selected stages of the plant have been characterized: waste inputs, mechanically treated wastes, anaerobically digested materials and composted wastes, according to the treatment sequence used in the plant. Results obtained showed that the main stages responsible for waste stabilization were the two first stages: mechanical separation and anaerobic digestion with a diminution of both RI and BMP around 40% and 60%, respectively, whereas the third stage, composting of digested materials, produced lesser biological degradation (20-30%). The results related to waste stabilization were similar in both lines (MSW and OFMSW), although the indices obtained for MSW were significantly lower than those obtained for OFMSW, which demonstrated a high biodegradability of OFMSW. The methodology proposed can be used for the characterization of organic wastes and the determination of the efficiency of operation units used in mechanical-biological waste treatment plants.
Ajuts:	Ministerio de Educación y Ciencia CTM2006-00315/TECNO
Drets:	Tots els drets reservats.
Llengua:	Anglès
Document:	Article ; recerca ; Versió sotmesa a revisió
Matèria:	Biochemical methane potential ; Mechanical-biological treatment plant ; Municipal solid wastes ; Organic fraction of municipal solid wastes ; Respiration index
Publicat a:	Waste management, Vol. 28, issue 12 (Dec. 2008) , p. 2735-2742, ISSN 0956-053X

DOI: 10.1016/j.wasman.2007.12.002

Pre-print 29 p, 1002.3 KB

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