Abstract: Systems and devices for removing materials from vacuum truck tanks are disclosed herein. An exemplary system for removing materials from a vacuum truck may include a tank having one or more walls enclosing the tank and an opening in the one or more walls to facilitate removal of materials from the tank; a blade positioned within the tank and configured to push materials towards the opening to remove or discharge collected materials from the tank; and a drive mechanism configured to selectively move the blade towards the opening in the tank. Additional systems and devices for removing materials from vacuum truck tanks are also disclosed herein.