High-load precipitation device

The utility model provides a high-load precipitation device and relates to the technical field of water treatment. The sedimentation device comprises a sedimentation tank and a gallery bridge; the gallery bridge is located above the sedimentation tank, and the gallery bridge reciprocates in the horizontal Y direction; the gallery bridge is fixedly connected with a sludge suction pipe, a sludge suction pump is arranged on the sludge suction pipe, the sludge suction pipe at the upstream of the sludge suction pump is communicated with a plurality of sludge suction hoppers, and the sludge suction hoppers extend to the bottom of the sedimentation tank; a sludge discharge channel is arranged outside the sedimentation tank, and the downstream end of the sludge suction pipe extends into the sludge discharge channel; a water outlet groove is formed in the upper half part of the sedimentation tank; in the working process of the sedimentation device, sewage entering the sedimentation tank is subjected to mud-water separ