Biological feed processing waste liquid treatment device

The utility model belongs to the technical field of biological feed processing, and particularly relates to a biological feed processing waste liquid treatment device which comprises a bottom plate, a second supporting leg is installed at one end of the top side of the bottom plate, a supporting plate is fixed to the top side of the second supporting leg, a filtering box is fixed to the top side of the supporting plate, a filtering plate is installed in the filtering box, sliding grooves are formed in the two sides of the filtering box, and convenient-to-collect assemblies are installed in the sliding grooves. The top side of the bottom plate is provided with a convenient-to-adjust assembly. Through the structural design of the assembly facilitating collection, after waste liquid is filtered, a baffle is moved upwards from the interior of a limiting frame, a discharging opening is leaked out, a servo motor is started, a rack is driven to move through a gear, and therefore a sliding block moves in a sliding gr