The invention relates to the technical field of
soil remediation, in particular to a heavy
metal contaminated
soil remediation device and a remediation method.The heavy
metal contaminated
soil remediation device comprises a center rotary drum, a hollow spiral rod is arranged in the center rotary drum, the center rotary drum is sleeved with a screening
barrel, and first spiral blades are arranged on the inner wall of the screening
barrel; the screening
barrel is rotationally sleeved with an interlayer rotating barrel, a second
spiral blade is arranged on the inner wall of the interlayer rotating barrel, the interlayer rotating barrel is sleeved with an outer fixing barrel, a stirring rod is arranged between the outer fixing barrel and the interlayer rotating barrel, and a cavity between the outer fixing barrel and the interlayer rotating barrel communicates with a cavity between the screening barrel and the center
rotating drum. The outer fixing cylinder, the interlayer rotary cylinder, the screening cylinder and the center rotary drum are arranged in a layer-by-layer sleeving mode, the structure is compact, continuous implementation of soil
slurry making, particle size grading, dissolving and washing and
solid-liquid separation is achieved, compared with an existing device, the transfer time is shortened, remediation work is finer, consumption of
chemical agents is reduced, and the efficiency of soil remediation work is greatly improved.