Heat Jacket and Paddle with Steam, and rotating heated paddle contacts to wet materials and dries moisture by conduct heat. Paddle dryer has high heat conduct factor and good efficiency, and little dust in wet ventilation.

Waste water that contains much moisture (over 70% of moisture) and sewage sludge falls by drum that rotates slowly and lifter inside, and are pulverized by blade that rotates quickly, so waste water and sewage are dried by contacting heated wind. Rotary dryer is direct heating type dryer that has high efficiency in reducing waste water, so can reduce much cost and dried material can be reused as fertilizer or feed.