Anaerobic digestion of solid manure at a farm scale biogas plant
Last changed: 05 July 2011
The objective is to study the technical, biological and economic conditions for a considerable addition of solid manure (straw-rich cattle/pig manure or nitrogen-rich poultry manure) for co-digestion with liquid manure in a wet digestion process with limited addition of water. The results will be disseminated to local farmers with interest for biogas in demonstration activities. The study will be accomplished both in a farm scale plant at Sötåsen and in laboratory scale at JTI and SLU.
Solid manure contributes to approximately half of the total manure biogas potential in Sweden. Today there is a lack of knowledge on how to efficiently mix solid manure in conventional wet digestion processes. The aim is to demonstrate cost efficient co-digestion of solid manure with liquid manure in a wet digestion process where solids contribute with 60-80% of the total biogas production. If this was applied on a national base it would achieve an increase of manure-based anaerobic digestion with 2 TWh per year.
Several participants in the biogas sector will be involved in the project, thus contributing to increase the quality of the study and to give a broad and target oriented dissemination of the results.
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Contact person:
Financed by:
The Swedish Farmers' Foundation for Agricultural Research, Swedish Board of Agriculture, The County Administrative Board of Västra Götaland
Period:
2010-2012
Cooperation partners:
JTI - Swedish Institute of Agricultural- and Environmental Engineering (Project leader)