| 摘要 |
A method of producing biogas by anaerobic digestion of organic matter comprises the steps of grinding organic matter, mixing the organic matter with a liquid to form a slurry with a dry solids content of 15-45% by weight TS, feeding the slurry to a tank reactor ( 2 ) and, in the tank reactor, contacting the slurry with biogas-producing bacteria for digestion under anaerobic conditions, and digesting the slurry in the tank reactor ( 2 ) at a dry solids content of 5-10% by weight TS while producing biogas. A device ( 1 ) for producing biogas by anaerobic digestion of organic matter comprises a sealable, essentially gas-tight tank reactor ( 2 ) having an inlet ( 4 ) for organic matter and outlets ( 6, 8 ) for produced biogas and formed digested sludge. The device ( 1 ) has a premixing tank ( 18 ) for mixing ground organic matter with a liquid to a slurry with a dry solids content of 15-45% by weight TS and a feed pipe ( 26, 4 ) for feeding the slurry to the tank reactor ( 2 ). |
