A sludge drying bed for effective separation or decanting of water from sludge and the storage of treated sludge. The units comprising of a sloping floor to drain the water towards a sluice door located in the front wall, two sidewalls and a valve controlled filler inlet pipe at the back wall where the sludge enters the bed. The sludge drying bed is covered by an openable pitched roof utilising a breathable, waterproof, black membrane as roof material for ventilation, heat absorption and surface water runoff. The sluice door contains alternating plates to facilitate the filling of the sludge drying beds and the decanting of the water at multiple levels within the sludge, with a sump located at the front wall to facilitate the efficient removal of the dried sludge from the beds. A telescopic handle, sludge drying bed cleaning tool is provided to facilitate the cleaning and maintenance of the sludge drying bed. The sludge drying beds are modular in design.