Sedimentation plate, sedimentation assembly, and sedimentation module

A sedimentation assembly, comprising:

• a box-type frame defined by a plurality of side beams and a plurality of sedimentation plates obliquely standing inside the box-type frame, wherein each sedimentation plate of the plurality of sedimentation plates is used for lateral-flow horizontal sedimentation, and comprises:
• a flat plate;
• a plurality of first rib plates, arranged at intervals, parallel to each other, and standing on a first surface of the flat plate;
• and
• a plurality of second rib plates, arranged at intervals, parallel to each other, and standing on a second surface of the flat plate;
• wherein, the first rib plates and the second rib plates are perpendicular to the flat plate, respectively, the first rib plates are perpendicular to the second rib plates, a water channel is formed between each two adjacent first rib plates, and a mud channel is formed between each two adjacent second rib plates, and wherein the first surface faces obliquely downward, and the second surface faces obliquely upward, and for each two adjacent sedimentation plates, the first rib plate of one sedimentation plate abuts against the second rib plate of the other sedimentation plate.