Site heavy metal contaminated soil treatment equipment and treatment method therefor

An on-site heavy metal contaminated soil treatment apparatus comprising a sampling system, a molding system, a heat processing system and a tail gas processing system which are disposed in sequence;

• the sampling system comprises a bucket elevator and a planetary stirring device which are connected in sequence and are both disposed on a mobile platform of the sampling system;
• the molding system comprises a vacuum extruder, a first conveyor belt, a second conveyor belt, a cutter's station, a first mobile platform and a second mobile platform which are disposed in sequence, wherein a first cutter for cutting brick blanks from the vacuum extruder is arranged above the first conveyor belt, and a second cutter for cutting strip brick blanks into block brick blanks is arranged above the cutter's station, the second conveyor belt is disposed at one side of the cutter's station, the vacuum extruder is located on the first mobile platform, the first conveyor belt and the cutter's station are located on the second mobile platform, and a discharge outlet of the planetary stirring device communicates with a feed inlet of the vacuum extruder;
• the heat processing system comprises a drying furnace, a microwave oven, a cooling room, a kiln car track, and a mobile platform of the heat processing system, wherein the kiln car track passes through the drying furnace, the microwave oven and the cooling room in sequence, and connects the drying furnace, the microwave oven and the cooling room in series, the drying furnace, the microwave oven, the cooling room and the kiln car track are all disposed on the mobile platform of the heat processing system, and the drying furnace and the microwave oven are each provided with an exhaust gas outlet;
• the tail gas processing system comprises an oxy-fuel combustion apparatus and a spray tower, wherein the oxy-fuel combustion apparatus and the spray tower are both disposed on a mobile platform of the tail gas processing system, the oxy-fuel combustion apparatus comprises a fan, a filter and a combustion chamber connected in sequence and a catalytic bed installed inside the combustion chamber, the exhaust gas outlets of the drying furnace and the microwave oven communicate with an air inlet of the oxy-fuel combustion apparatus, and an air outlet of the oxy-fuel combustion apparatus communicates with an air inlet of the spray tower.