Experimental data concerning a fast re-start-up of a digester treating the organic fraction of municipal solid waste at thermophilic conditions (55°C) is analyzed according to a classical approach (evolution of mass balance and stability parameters) and a new approach, put forward here, based on the interpretation of the biogas production profiles obtained after feeding the digester. Gas production, H2 pattern in the biogas and volatile fatty acids in the digester content are the most suitable parameters using the classical approach. Using the evolution of the biogas production profiles the start-up and normal digester operation can be monitored in a satisfactory and much simpler way. This approach could assume special importance for industrial-scale digesters. © 1993 Taylor and Francis Group, LLC.
Monitoring a fast thermophilic re-start-up of a digester treating the organic fraction of municipal solid waste
PAVAN, Paolo;
1993-01-01
Abstract
Experimental data concerning a fast re-start-up of a digester treating the organic fraction of municipal solid waste at thermophilic conditions (55°C) is analyzed according to a classical approach (evolution of mass balance and stability parameters) and a new approach, put forward here, based on the interpretation of the biogas production profiles obtained after feeding the digester. Gas production, H2 pattern in the biogas and volatile fatty acids in the digester content are the most suitable parameters using the classical approach. Using the evolution of the biogas production profiles the start-up and normal digester operation can be monitored in a satisfactory and much simpler way. This approach could assume special importance for industrial-scale digesters. © 1993 Taylor and Francis Group, LLC.
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