Spray Dryer

Spray drying is commonly used in wastewater treatment plants as an alternative to traditional sludge dewatering methods, such as belt presses or centrifuges, to reduce the volume and weight of the sludge

 

A spray dryer employs the use of a high-speed centrifugal bowl to get a good separation between the moisture and the sludge. Centrifugal force serves to atomize the sludge into small tiny particles with wide surface area and then spray on top a drying chamber. Inside this compartment, hot gases will be introduced so that moisture can be removed efficiently.