Biogas producing system
AssigneeScandinavian Biogas Fuels AB
InventorJörgen EJLERTSSON
Life of this patent
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Abstract
A method for producing biogas by anaerobic digestion of organic matter may involve feeding organic matter suitable for biogas production to a first tank reactor, and in the first tank reactor, contacting the organic matter with biogas producing microorganisms for digestion under anaerobic conditions. The organic matter may be digested in the first tank reactor while producing biogas. The method may further involve providing digested sludge from an anaerobic digestion process in a second tank reactor, which differs from the first tank reactor, the digested sludge containing a desired composition of nutriments. The nutriments may be fed into the first tank reactor.
Claims9
A method for producing biogas by anaerobic digestion of organic matter, the method comprising:
- a) feeding organic matter suitable for biogas production to a first tank reactor, and in the first tank reactor, contacting the organic matter with biogas producing microorganisms for digestion under anaerobic conditions;
- b) digesting the organic matter in the first tank reactor while producing biogas;
- c) providing digested sludge from an anaerobic digestion process in a second tank reactor that is different than the first tank reactor, the digested sludge containing a desired composition of nutriments;
- c1) performing a first treatment of the digested sludge after step c), the first treatment including
- c1.1) hygienisating the digested sludge in a hygienisation device to form a nutriment additive, and
- d) feeding the nutriment additive into the biogas producing microorganisms in the first tank reactor.
Dependencies are inferred from the claim text.