Heavy metal contaminated soil remediation device

Abstract

The invention belongs to the technical field of soil remediation devices, and particularly discloses a heavy metal contaminated soil remediation device which comprises a tank, an outer barrel, a spiral conveying shaft and smashing rods. A motor is mounted on the top of the tank, the spiral conveying shaft is arranged inside the tank, the outer barrel is rotationally connected into the tank and ispositioned on the outer side of the spiral conveying shaft, the inner wall of the outer barrel is in contact with the edges of the spiral conveying shaft, a screening module is mounted on the inner wall of the tank and corresponds to the lower side of the spiral conveying shaft, a spray module is arranged inside the tank and is positioned at the bottom of the screening module, and two squeezing modules are mounted on a side of the inner wall of the tank; the motor is in transmission connection with the spiral conveying shaft; the four smashing rods are arranged on two sides of an outer cylindrical surface of the outer barrel and correspond to the two squeezing modules, three smashing modules are arranged on each smashing rod, and the smashing rods and the smashing modules are used for crushing soil blocks. The heavy metal contaminated soil remediation device has the advantages that the screening efficiency of funnel-shaped sieve plates can be improved, and the soil remediation chemicaland soil mixing efficiency can be improved.

Description

technical field [0001] The invention belongs to the technical field of soil remediation devices, in particular to a remediation device for heavy metal polluted soil. Background technique [0002] Soil remediation is a technical measure to restore the normal function of polluted soil. Soil remediation refers to the use of physical, chemical and biological methods to transfer, absorb, degrade and transform pollutants in the soil, reducing its concentration to an acceptable level, or converting toxic and harmful pollutants into harmless substances. Fundamentally speaking, the technical principle of contaminated soil remediation can include: changing the form of pollutants in the soil or combining with the soil, reducing their mobility and bioavailability in the environment; concentration of the substance. [0003] Some technical solutions of soil remediation devices have also appeared in the prior art. For example, a Chinese patent with application number 2017113919910 disclo...

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Problems solved by technology

[0004] Although this technical scheme can make the agent fully contact with the soil by pulverizing the soil and stirring the soil when adding the agent, so that the soil can be thoroughly treated, the disadvantage of incomplete soil treatment can be avoided, and the treatment effect can be improved. When sieving broken soil clods, large sized soil clods are likely to block the sieve hole, resulting in reduced screening efficiency, and insufficient mixing of soil and repair agents, resulting in reduced soil repair efficiency, requiring secondary repair, increasing the workload

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