Abstract: The invention relates to a filter (10) for a feeding system for liquids with tendency to form sediments, in particular for a crude oil washing or a ballast water management system, the filter (10) being adapted to be inserted into a filter casing (11) provided in a feed line of the feeding system and allowing only the passage of the liquid comprising particles of small diameter, the filter (10) having a hollow filter body (16) with side walls (17) and a bottom portion (18), an inlet (14) being in fluid communication with the feed line (12), pores (20) provided in at least a portion of the side walls (17) allowing the passage of the liquid from the inside of the filter body (16) into the surrounding filter casing (11), and is characterized by a rotor (30) located at the bottom portion/18) of the filter body (16) arranged for rotation at high speed, and a sieve plate (31) located above the rotor (30) and extending over a portion of the filter body (16) diameter, the position of the plate (31) and its distance t