A discharge arrangement for horizontal filtration equipment. The discharge arrangement includes a conveyor configured to be provided below the horizontal filtration equipment for receiving discharge material discharged from the horizontal filtration equipment, and a drive for driving the conveyor. The drive is configured to enable driving the conveyor in two opposite directions. Thereby, material provided on the conveyor can be discharged at either a first end or a second end depending on the direction in which the conveyor is driven.

The sleeve is configured to be mounted coaxially inside a stack of annular filtering elements and comprises apertures each having an inner orifice and an outer orifice, the outer orifice of each aperture being configured to face and communicate with an inner passage of a filtering element, wherein the apertures are organized in several circumferential rows, each circumferential row extending over a whole circumference of the sleeve, and wherein at least some of the apertures have an outer orifice elongated in the circumferential direction.