C - Chemistry – Metallurgy – 05 – F
Patent
C - Chemistry, Metallurgy
05
F
C05F 17/00 (2006.01) C02F 1/52 (2006.01) C02F 3/12 (2006.01) C02F 3/26 (2006.01) C05F 3/00 (2006.01)
Patent
CA 2104791
ABSTRACT OF THE DISCLOSURE Solid and liquid organic waste material in a raw mixture (RN) are treated and disposed of separately. The mixture is divided by mechanical separation (SEP) into a liquid phase (L1) with a low, very finely divided solids content and a solids fraction (S1) with a water content of 45 to 70 wt.%. The liquid phase (L1) then undergoes an anaerobic fermentation process (AAF), with evolution of biogas (BG), and the solids fraction (S1) undergoes an aerobic fermentation process (C) to form compost, fertilizers or fodders. Ballast substances present in the biogas and/or in the liquid phase (L2) are removed by chemical means (CF) and conveyed to the circuit before the biogas (BG) is burnt or the liquid phase (L) is discharged into a clarification basin (KKA) or fed to the subsequent purification stage. The CO2 present in the biogas is absorbed in the initial mixture (RM) and/or one of the subsequent liquid phases (L), with simultaneous reduction of its pH.
Marks & Clerk
Technoagrar Consulting Ag
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