Circulating photocatalytic soil remediation device and remediation method thereof

The invention discloses a circulating photocatalytic soil remediation device and a remediation method thereof, and belongs to the technical field of soil remediation. The circulating photocatalytic soil remediation device comprises a feeding hopper; the bottom end of the feeding hopper is connected to a feeding mechanism; the lower end of one side, away from the feeding hopper, of the feeding mechanism is connected with a crushing mechanism; the bottom end of the crushing mechanism is connected with a separating and repairing mechanism; a collecting box is arranged below the separating and repairing mechanism; a first discharging hopper is connected to the side wall of the separating and repairing mechanism; the end, away from the separating and repairing mechanism, of the first discharging hopper is connected to a soil circulating mechanism; a second discharging hopper is connected to the top end of the soil circulating mechanism; and the end, away from the soil circulating mechanism,of the second dischargin