Sewage and waste water sludge drying
⇒ Avoid high-viscosity state of the sludge (water content 60~40%) by allowing drying even without a recycle structure
⇒ Relatively less mechanical abrasion and sealed-structure contains undesirable odor
 Food waste drying
⇒ Indirect drying type minimizes gas from leaking outwards when drying food wastes, and minimizes complaints concerning odor.
Adhesion of drying wastes is relatively small, enabling wastes with a limited amount of viscosity to be dried.
Advantages:
 Externally: composed of 2 or more axes for high-temperature steam inflow and for jacket and paddle, and an inlet on the upper side for drying-materials and, also an extraction point and a gas discharge component for discharging exhaust gas.

 Internally: 2 or more axes for the inflow of high-temperature steam has attached  crescent-shaped paddles which rotate, allowing contact with input wastes for drying It also acts as screw, and transports the wastes along the structure.
 High-temperature steam enters from the paddle axis, and delivered to the inner side of the paddle.
 As the paddle rotates, the wastes get in contact with the slanted walls, and the moisture vaporizes.
 Drying wastes are transferred by the slanted plane of the paddle.
 Drying wastes do not stick due to the slanted plane of the paddle.