Heavy metal contaminated soil remediation equipment and remediation method thereof

Abstract

The invention discloses heavy metal contaminated soil remediation equipment. The equipment comprises a storage device, wherein a separation device is arranged in the storage device, the storage device comprises a storage box, a cavity partition plate is fixedly connected to the inner wall of the storage box, and a cavity, located below the cavity partition plate, in the storage box forms a liquid storage cavity. A first submersible pump is fixedly mounted on the bottom surface of the inner cavity of the storage box. Thrust is provided for soil through a filter pressing device, the soil moves towards the interior of a leaching device and moves upwards along an inner cavity of the leaching device, multiple times of leaching and dewatering are conducted on the soil through cooperation of the disengaging device, the leaching device and a pressure applying device, the dosage of a remediation agent is small, the utilization rate is high, and the residual amount of the remediation agent in the soil is extremely small; soil can be conveniently transfered; and meanwhile, the heavy metal dissolved in the residual remediation agent is extremely few, so that the residual heavy metal in the soil is extremely few, the remediation effect is improved, the remediation quality is good, and the practicability of the heavy metal contaminated soil remediation equipment is improved.

Description

technical field [0001] The invention relates to the field of soil remediation equipment, in particular to a heavy metal contaminated soil remediation device and a remediation method thereof. Background technique [0002] Heavy metals refer to metals with a density greater than 4.5g / cm3, including gold, silver, copper, iron, mercury, lead, cadmium, etc. Heavy metals accumulate in the human body to a certain extent and cause chronic poisoning. In terms of environmental pollution, heavy metals mainly Refers to heavy elements with significant biological toxicity such as mercury, cadmium, lead, chromium, and metalloid arsenic. Heavy metals are very difficult to be biodegraded, but on the contrary, they can be enriched by thousands of times under the biological amplification of the food chain, and finally enter the human body , heavy metals can interact strongly with proteins and enzymes in the human body, making them inactive, and may also accumulate in some organs of the human b...

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Problems solved by technology

[0003] The existing heavy metal-contaminated soil remediation device is mainly composed of a leaching tower and a rinsing system. Restorative agents restore polluted soil, but repairing polluted soil in this way will consume a large amount of restorative agents, the amount of repair agents used is large, and the cost of repair is high. Moreover, a large amount of restorative agents will remain after soil repair, resulting in muddy soil. It is inconvenient to transfer, and the residual remediation agent in the soil will increase the residual heavy metals in the soil, and the repair quality is low. Therefore, it is urgent to design a heavy metal-contaminated soil remediation device and its remediation method

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