Abstract: A device for digesting sludge anaerobically, comprising a digesting tank (100) having an upper region (104) and a lower region (105), and a reaction chamber (107) for converting raw sludge into matured sludge, an inlet (112) for introducing sludge (109) into the digesting tank, at least one transfer pipe (120) for channelling sludge from the lowe region of the digesting tank to the upper region of the digesting tank, said at least one transfer pipe being arranged within the digesting tank and having at least a part of its length thereof arranged within the reaction chamber so that least one transfer pipe is in contact with sludge moving through the reaction chamber, thereby resulting in heat transfer from sludge moving in at least on transfer pipe to sludge in the reaction chamber, and an outlet (114) arrange at the lower region of the digesting tank for discharging matured sludge (116) from the digesting tank.

Abstract: Apparatus for sorting constituents of a mixture according to density and/or grain size includes a vibratory table which extends at an inclination underneath a feed inlet for transport in a conveying direction and sorting of the mixture. The vibratory table is subdivided transversely to the conveying direction into single table sections, with each table section being driven by two crankshafts of a crank mechanism and with the movement of the table sections being adjusted to each other by the crankshafts at a phase shift. In order to bridge the gap between successive table sections, flexible transition members are provided by which neighboring table sections are connected with each other end-to-end.