Foundation pit excavation sandy soil sludge waste residue pretreatment structure

The utility model discloses a foundation pit excavation sandy soil sludge waste residue pretreatment structure, and relates to the technical field of sludge waste residue treatment. The foundation pit excavation sandy soil sludge and waste residue pretreatment structure comprises a cleaning pool used for cleaning and separating sludge and waste residues, a feeding hopper is fixedly arranged on the surface of the cleaning pool, and a water outlet is formed in the bottom of the cleaning pool; the cleaning device comprises a cleaning pool, a digging hopper is arranged in the cleaning pool through a lifting mechanism, the lifting mechanism is used for driving the digging hopper to dig cleaned waste residues, a slurry storage mechanism is arranged on one side of the cleaning pool, and the slurry storage mechanism is used for storing muddy water. Through the arrangement of the digging hopper and the lifting mechanism, the lifting mechanism drives the digging hopper to dig up waste residues at the bottom of the pool