NOVELTY - The separating apparatus comprises a common frame (1), a sludge tank (2), a drum strainer (8) intended for separating liquid rejects and dry substance rejects from each other, receiving the sludge to be guided into the sludge tank and forming a single functional unit, a liquid-rejects-receiving closed container (5) with oppositely-lying walls (6, 7), which have opposite reserve openings, a hopper receiving the dry substance rejects, a feed device for guiding the sludge into the sludge tank, an outlet device for the separated liquid rejects, and an outlet device for the dry substance rejects.    USE - Apparatus for separating liquid rejects and dry substance rejects in the sludge from agriculture, industry and colonies.    ADVANTAGE - The separating apparatus can be continuously, easily and efficiently operated with high performance and high separating capacity, is easily transportable, avoids the accumulation of large sludge quantities in intermediate storage, and does not need more space.    DETAILED DESCRIPTION - The separating apparatus comprises a common frame (1), a sludge tank (2), a drum strainer (8) intended for separating liquid rejects and dry substance rejects from each other, receiving the sludge to be guided into the sludge tank and forming a single functional unit, a liquid-rejects-receiving closed container (5) with oppositely-lying walls (6, 7), which have opposite reserve openings, a hopper receiving the dry substance rejects, a feed device for guiding the sludge into the sludge tank, an outlet device for the separated liquid rejects, and an outlet device for the dry substance rejects to be received. The drum strainer extends itself from the sludge tank up to the receiving hopper over the reserve openings in the walls of the liquid container, so that the drum strainer is introduced into the sludge container arranged at the liquid container to guide the sludge into the tank and a perforated sheath of the drum strainer is arranged at the liquid container. The drum strainer extends itself from the liquid container up to the outlet device for the dry substance rejects. The separating apparatus is connected with a power transmission unit of a tractor to generate the required driving force. The opening pairs in the walls of the liquid container form a reserve opening to be closed with a sealing flange. The outlet device has a conveyor screw, and is formed in a collapsible manner. An INDEPENDENT CLAIM is included for a drum strainer useful in a separating apparatus.    DESCRIPTION OF DRAWING(S) - The diagram shows a longitudinal sectional view of a separating apparatus.    Frame (1)    Sludge tank (2)    Liquid container (5)    Walls (6, 7)    Drum strainer. (8)