Mixed repair equipment for heavy metal polluted soil and method for repairing and treating the same

Abstract

The invention discloses a mixing and repairing equipment for heavy metal polluted soil, which comprises a frame, a driving device, a soil mixing drum, a stirring mechanism and turning fins, the soil mixing drum has a cylindrical structure, and the soil mixing drum The stirring mechanism is installed horizontally on the frame, the stirring mechanism is installed inside the soil mixing drum along the axial rotation, and several of the turning fins are arranged in a circular array along the inner wall of the soil mixing drum, and the The length direction of the flipping fins extends along the axial direction of the soil mixing drum, and the soil particles at the bottom of the flipping fins flipping the soil mixing drum are transported upward along the rotation direction of the soil mixing drum, and are transported by the flipping fins The soil particles gradually fall from the upper part of the stirring mechanism, and the soil particles can be fully mixed with the improver effectively through the cyclic turning and transporting of the soil.

Description

technical field [0001] The invention belongs to the field of soil remediation, and in particular relates to a mixed remediation equipment for heavy metal polluted soil and a method for remediation and treatment thereof. Background technique [0002] Soil pollution, as a problem that restricts the sustainable development of human society, is attracting more and more attention from all over the world. The main causes of soil pollution are excessive use of chemical fertilizers and chemical pesticides, improper disposal of various sewage, sludge and organic waste, accidental discharge of harmful substances, and long-term accumulation of various pollutants in the soil. When there are too many harmful substances in the soil and exceed the self-purification ability of the soil, the composition of the soil will change, the production of microorganisms will be inhibited, and the harmful substances will eventually be indirectly absorbed by people, endangering people's health. Soil po...

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Problems solved by technology

[0003] At present, the existing soil repair method is to use chemical modifiers or microbial agents to repair the soil. When the surface of the soil in the kettle is sprayed with a liquid improvement solution or a solid chemical modifier is added, since the modifier needs to be mixed with The soil needs to be stirred for a long time to mix the amendment with the soil evenly. This process is not only time-consuming, but the most important thing is to make the amendment fully mix with the soil particles so that the amendment can be mixed with the heavy metal elements in the soil. Neutralization reaction

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