04652374 is referenced by 33 patents and cites 11 patents.

A solid organic waste is fermented in water in two phases, a hydrolysis/acidification phase and a methane fermentation phase. Solid organic waste is introduced in the first phase, of which waste at least 80% of the volume has a particle size larger than x mm, x being between 0.25 and 1.5 mm dependent on the introduced solid organic waste. The waste in the first phase is continuously or periodically stirred and is screened for the removal of particles smaller than x mm with liquid, whereafter the smaller particles are separated from the liquid and the so-separated liquid is at least mainly supplied to the methane fermentation space, while the separated smaller particles are recirculated to the first phase reactor and/or discharged.

Title
Process for anaerobic fermentation of solid wastes in water in two phases
Application Number
6/648194
Publication Number
4652374
Application Date
September 7, 1984
Publication Date
March 24, 1987
Inventor
Alberto Cohen
Huizen
NL
Agent
Fleit Jacobson Cohn & Price
Assignee
Gist Brocades
NL
IPC
C02F 11/04
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