Multi-stage sedimentation tank with inclined pipe or inclined plate structure

The utility model relates to a multi-stage sedimentation tank with an inclined tube or inclined plate structure, which belongs to the technical field of water treatment and at least comprises a primary sedimentation tank, a secondary sedimentation tank and a tertiary sedimentation tank, dredging wells and inclined tubes or inclined plates are respectively arranged in the primary sedimentation tank, the secondary sedimentation tank and the tertiary sedimentation tank, and the inclined tubes or inclined plates are arranged in the dredging wells. Wherein the inclination directions of the inclined pipes or the inclined plates in the primary sedimentation tank are the same and are opposite to the inclination directions of the inclined pipes or the inclined plates in the secondary sedimentation tank, so that the inclination directions of the inclined pipes or the inclined plates in each stage of sedimentation tank are the same as the water flow direction, and the drainage of the sedimentation tanks is facilitated.