The present invention relates to a sludge dewatering apparatus, and more particularly, to a sludge dewatering apparatus for increasing the dewatering efficiency by centrifuging the sludge dehydrated by centrifugal dehydration through a fine hole formed in the ceramic.;The centrifugal dewatering device of the present invention introduces a conveying screw 13 having a spiral conveying blade for introducing sludge containing water into the drive shaft 14 to be discharged to the discharge port 15 by centrifugal force and conveying the sludge around. Installed at the periphery of the water discharge port 23 for discharging water on one side and a sludge discharge port 24 on the opposite side thereof, while rotating in a direction opposite to the direction of the transfer screw 13 to centrifugally dehydrate the water. In the centrifugal dewatering device for dewatering sludge composed of a dehydration drum 20, a driving device (22a) (22b) for driving the same, and a case 10 surrounding the dewatering drum, an end of the dehydration drum (20) toward the sludge discharge port (24) The ceramic dehydration drum (30) for secondary dewatering of sludge is connected to the ceramic dehydration drum (30), and the transfer screw (13) is also installed in the ceramic dehydration drum (30). Since the centrifugal dehydration through the micropores formed in the ceramic in the ceramic dehydration bucket has the advantage of obtaining a higher dehydration effect.
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