Thermal-desorption sewage treatment system and method for organic contaminated soil

The invention belongs to the technical field of soil remediation, and particularly relates to a thermal-desorption sewage treatment system for organic contaminated soil. The system comprises a sludgetank as well as a regulating tank, a coagulating sedimentation tank, a Fenton sedimentation tank, a deep oxidation tower, a filter device and a clean water tank which are sequentially connected in thecirculating direction of the sewage; the inside of the coagulating sedimentation tank is sequentially divided into a coagulating reaction area and a coagulating sedimentation area, and the inside ofthe Fenton sedimentation tank is sequentially divided into a Fenton reaction area, a Fenton sedimentation area and a buffer area; a sludge outlet of the coagulating sedimentation area and a sludge outlet of the Fenton sedimentation area are communicated with the sludge tank. The invention further provides a thermal-desorption sewage treatment method for the organic contaminated soil. After being subjected to homogenizing an