A screw conveyor in waste facilities is a robust mechanical system designed to move bulk materials efficiently using a rotating helical screw blade, or auger, enclosed within a tubular or trough housing. As the screw rotates, it pushes materials such as municipal solid waste, sludge, shredded recyclables, or other bulk products along horizontal, inclined, or even vertical paths. Screw conveyors are ideal for handling semi-solid, abrasive, or granular materials and provide controlled, continuous flow to downstream equipment such as shredders, sorting lines, or storage hoppers. Their enclosed design minimizes dust and spillage, while modular construction allows easy maintenance, adjustment, and integration with other processing equipment. By facilitating reliable material transport, screw conveyors improve overall operational efficiency and streamline waste handling and recycling processes.