VERFAHREN UND ANLAGE ZUR ANAEROBEN ZERSETZUNG VON FESTEN ORGANISCHEN ABFAELLSTOFFEN

摘要

PCT No. PCT/NL95/00284 Sec. 371 Date Apr. 3, 1997 Sec. 102(e) Date Apr. 3, 1997 PCT Filed Aug. 25, 1995 PCT Pub. No. WO96/07726 PCT Pub. Date Mar. 14, 1996For the anaerobic fermentation of solid organic waste substances, solid waste is mixed with liquid material, particularly anaerobic slurry, and the temperature of the mixture is brought to a value between 25 DEG and 70 DEG C., preferably between 30 DEG and 40 DEG C. (mesophilic) and between 55 DEG and 65 DEG C. (thermophilic). By means of spontaneous rising of lightweight material and by means of flotation, a layer (10) of solid material floating on a methane-generating zone is formed from said mixture in a reactor. Said floating layer moves from a supply end (7) or a mixing section (2) to a discharge end (14) of the reactor, hydrolysis and acidification of solidorganic material taking place in the floating layer. The fermented floating layer is discharged via the discharge (14) end independent of the residence time of fluid and slurry in the methane-generating zone under the floating layer.