A dynamic simulation of a two-phase anaerobic digestion system for solid wastes

In this article, a two-phase system for the digestion of wastes with a high solid content is simulated. The solids are charged to the hydrolyzer and then leachate recirculation is activated until biodegradation is nearly complete. Several parameters are tested, namely moisture, leachate recirculatio...

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Bibliographic Details
Published inBiotechnology and bioengineering Vol. 30; no. 7; p. 844
Main Author Mata-Alvarez, J
Format Journal Article
LanguageEnglish
Published United States 01.11.1987
Subjects
ANAEROBIOSE
ANAEROBIOSIS
APROVECHAMIENTO DE DESECHOS
DECHET SOLIDE
DESECHOS SOLIDOS
DIGESTERS
DIGESTEUR
DIGESTORES
METHANE PRODUCTION
MODELE
MODELOS
PRODUCCION DE METANO
PRODUCTION DE METHANE
SOLID WASTES
UTILISATION DES DECHETS
WASTE UTILIZATION
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Summary:In this article, a two-phase system for the digestion of wastes with a high solid content is simulated. The solids are charged to the hydrolyzer and then leachate recirculation is activated until biodegradation is nearly complete. Several parameters are tested, namely moisture, leachate recirculation flow rate, and hydrolyzer-methanizer volume ratio. The results show that recirculation rate is an important parameter subject to optimization, with optimal values corresponding to hydrolyzer hydraulic retention times below 1 day. The quantity of recirculating water must be the highest possible. As a consequence, the organic load to the methanizer is reduced, making thus possible the use of a smaller methanizer volume.
Bibliography:881568288
P06
ISSN:0006-3592
1097-0290
DOI:10.1002/bit.260300706