Draggable conveyor is used to transport compactable solids. These conveyors are highly adaptable and can be customized to convey most of the WWTP solids. It is used in many WWTP processes such as primary clarifiers, grit chambers, sludge cake transport and compositing operations. The design of this conveyor is primarily predicted by the design of the chain and calculation of the pulling loads to be encountered in pushing material along the length of the conveyor.