The CTSB Decanter Centrifuge/Dewatering machine is designed to separate water from solids using force, including vacuum and centrifugal motion. Used widely in waste management, dewatering equipment can save money by reducing solids handling or disposal expenses that are charged on a unit weight basis. The weight percentage of water in landfill-bound solids and raw wastewater sludge can effectively double or triple the cost of removal or treatment services.
Depending on the type of solid and the size of the operation, dewatering can be more cost effective than heat drying systems for water removal because the energy cost to power an oven or microwave can be much higher than to power a motor or pump. It may also be easier to streamline dewatering methods into a process line. In applications demanding very high levels of water removal, dewatering is used generally as the preliminary method, and is followed by stages of heat drying or digestion.
The CTSB machine using centrifuges system to separate solids from liquids through sedimentation by centrifugal force. Solids are fed through a stationary feed tube, accelerated through ports in the conveyor shaft, and distributed to the periphery of the bowl. The bowl, spinning at high speeds, separates the water from the solids which are compacted against the bowl walls.