Sewage recycling system for construction site

The invention discloses a construction site sewage recycling system which comprises a sedimentation treatment pond, a plurality of parallel return pipes are fixedly connected to the middle of the inner wall of the sedimentation treatment pond, and a plurality of water taking pipes are fixedly connected to one side of each return pipe; a drainage plate is fixedly connected to the top of the inner wall of the sedimentation treatment tank, a drainage cavity is formed in the drainage plate, a sludge pipe is fixedly connected to the bottom of the inner wall of the sedimentation treatment tank, and a sludge treatment unit is fixedly connected to one end of the sludge pipe; according to the sewage treatment device, sewage entering the sedimentation treatment tank is guided and shunted through the drainage grooves and the water permeable openings, so that the sewage is uniformly dispersed and slowly falls, a sewage treatment agent is dispersed and fed into the sedimentation treatment tank in cooperation with a plural