Soil remediation device and repairing method thereof

The invention discloses a soil remediation device and a repairing method thereof. The soil remediation device comprises an airheater and a desorber; a feeding port communicated with an inner cavity isformed in the top of the desorber, a heat exchanger is connected to a discharging port in the bottom of the desorber, the side wall, located beside the feeding port, of the desorber is connected witha high-temperature dust remover through a pipeline, an air distribution device is installed on the inner circumference, located beside the discharging port, of the desorber and further connected witha pressurizing draught fan through a pipeline, and a discharging valve is additionally installed at the junction of the heat exchanger and the desorber. By means of the soil remediation device, polluted soil enters the desorber, and is in the boiling state in the desorber under the effect of the pressurizing draught fan and the air distribution device; under the effect of hot air, pollutants in the polluted soil are fully