A Sludge Dryer is a machine or set of equipment that dewaters sludge by evaporating the harbored water. Technically, sludge drying machines alienate liquid elements from solid waste using distinct dewatering processes. The primary sludge drying processes are thermal and mechanical drying. Sludge drying is a process to dewater and recycle high-moisture sludge as resource. Sludge Dryer is designed to process metal hydroxide plating wastes, and when used in conjunction with a filter press, further dries filter cakes.