In-situ decontamination and dehydration device and method for heavy metal polluted slurry

The invention discloses a heavy metal polluted slurry in-situ decontamination and dehydration device and method.The device comprises a flocculation system, a geotextile tube bag system and an electrokinetic remediation system.The flocculation system comprises a slurry pump and a spiral flocculation pipeline, and a feeding port and a discharging port are formed in the two ends of the spiral flocculation pipeline respectively; a plurality of partition plates are uniformly arranged in the slurry pump, and the slurry pump is mounted at the discharge hole; the geotextile tube bag system comprises a geotextile tube bag, a reserved feeding hole, an electrode working chamber outer membrane, an electrode working chamber and a stainless steel base; the electrokinetic remediation system comprises a current detection device, a direct-current power supply device, a positive electrode and a negative electrode, wherein the positive electrode and the negative electrode are located in an electrode working chamber and are conn