During the sedimentation process, the sludge in the wastewater will rise to the top and overflow around the clarifier, which can cause the sludge to settle to the bottom of the clarifier and form a sludge layer; Then, immerse the sludge layer into a cylindrical tube and slowly mix it inside. Then, extract the sludge from the bottom and perform dewatering operation. Dehydration usually involves placing sludge into a dewatering machine, which uses a belt in the machine to dehydrate the sludge and separate the water from it.