Abstract: Disclosed are various embodiments of a drum treatment assembly that is configured to remote waste fluid contained within a drum. In one example, among other, drum treatment assembly includes a drum lid with an aperture and a treatment assembly that is suspended from the aperture in the drum lid. The treatment assembly can include a motor enclosure for a motor and a motor coupler. The treatment assembly can also include a skimmer assembly that is attached to the motor coupler. The skimmer assembly can include a belt system for moving a belt along a longitudinal axis of a drum and a trough. The trough can comprise a belt scraper and a trough aperture, in which the belt scraper is configured to remove waste attached to the belt. The trough aperture is configured to connect to a drainage tube for draining the waste out of the drum.