A waste trommel is a type of rotating cylindrical screen used in waste management and recycling processes. It separates materials based on size by allowing smaller particles to pass through holes in the screen while larger materials are retained. Typically, waste trommels are used to sort municipal solid waste, construction debris, compost, and other materials, helping to improve recycling efficiency and reduce landfill volume. The design allows for effective separation of different materials, making it a valuable tool in waste processing facilities.