The method of reciprocating the driving part at the top of the sedimentation basin is the same as the non-dipper type. However, this method is a method of driving while suctioning sludge with a vacuum pump at the top of the girder, and has little performance.

Underwater wave-type sludge collector is a machine that removes sediment by sediment the turbidity in the influent of the water purification plant and the sewage treatment plant.

In particular, the sludge that has settled on the bottom of the sedimentation basin can be completely moved to the outlet by scrapers in the front and rear. The sludge collector must be equipped with a signal generating device so that the scraper can stop at the correct position of the inlet and outlet of the sedimentation basin as a front-rear drive type. .

The sludge collector should use an inverter to move speed range (0.2m/min~0.6m/min) so that the speed increases or decreases according to the turbidity increase and the amount of sludge deposition, and the floc precipitated during operation should not be scattered