Reciprocating flow inclined plate sedimentation tank

The utility model discloses a reciprocating flow inclined plate sedimentation tank which comprises a sedimentation tank main body and a water inlet pipe, the sedimentation tank main body consists of apre-sedimentation area on one side, an inclined plate sedimentation area on the other side and a sludge accumulation area at the bottom, the water inlet pipe is communicated with the pre-sedimentation area, and a first sludge discharge pipe is arranged at the bottom of the pre-sedimentation area; and the inclined plate settling zone consists of a lower flow inclined plate zone in the middle and upper flow inclined plate zones on two sides. In the utility model, water and suspended matters are subjected to primary precipitation separation through the pre-precipitation area, namely horizontal flow pre-precipitation, supernatant on the upper layer of the pre-precipitation area is subjected to secondary precipitation separation through the downward flow inclined plate area, namely, the same-direction inclined plate p