System and process for anaerobic digestion

Patent · Tue Feb 24 04:00:00 EST 1981

OSTI ID:6299632

Fischer, D J; Narske, R M; Thomas, J C; Worthington, E J

A system and a process for producing methane gas by anaerobic digestion of feed materials containing suitable organic materials. The system includes a plurality of digestion modules arranged primarily in series. Each digestion module is positioned with its slurry inlet port at a slightly lower elevation than the slurry outlet port of the preceding digestion module. The number of digestion modules is dependent upon the particular feed material to be digested. Each digestion module can be sampled and controlled independently. The process includes grinding and pulping the feed material, mixing the feed material with a liquid to prepare a slurry, charging the initial digestion module with slurry and transferring the digesting slurry to the next successive digestion module and subsequently to each successive digestion module after predetermined time periods until the digestion process has been completed. The liquid is separated from the digested slurry for recycle through the system. The resulting sludge is useful for a variety of purposes.

• Assignee: Universal Research And Development Corp
• Patent Number(s): US 4252901
• OSTI ID: 6299632
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
090122* -- Hydrocarbon Fuels-- Preparation from Wastes or Biomass-- (1976-1989)
140504 -- Solar Energy Conversion-- Biomass Production & Conversion-- (-1989)
ALKANES
ANAEROBIC DIGESTION
BIOCONVERSION
BIOSYNTHESIS
DIGESTION
DISPERSIONS
EQUIPMENT
HYDROCARBONS
MANAGEMENT
METHANE
MIXTURES
ORGANIC COMPOUNDS
PROCESSING
SLURRIES
SUSPENSIONS
SYNTHESIS
WASTE MANAGEMENT
WASTE PROCESSING