Device for repairing heavy metal pollution in soil with in-situ multi-physical field coupling and method

A multi-physics, soil remediation technology, applied in the restoration of polluted soil and other directions, can solve the problems of affecting the soil and groundwater ecological environment, slow restoration process, and high cost, and achieve the effects of improving restoration efficiency, short restoration period and low cost.

Inactive Publication Date: 2019-01-04
HOHAI UNIV
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Problems solved by technology

Physicochemical methods can generally effectively remove pollution in soil, but the process of treatment will seriously affect the structure of soil and the ecological environment of groundwater, and t

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  • Device for repairing heavy metal pollution in soil with in-situ multi-physical field coupling and method
  • Device for repairing heavy metal pollution in soil with in-situ multi-physical field coupling and method
  • Device for repairing heavy metal pollution in soil with in-situ multi-physical field coupling and method

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Embodiment Construction

[0028] The present invention will now be further described in detail in conjunction with the accompanying drawings and embodiments. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so it only shows the composition related to the present invention.

[0029] Such as figure 1 , figure 2 As shown, an in-situ multi-physics field coupling device for remediating heavy metal pollution in soil includes an electrolysis mechanism, a sewage treatment mechanism 10, at least one water injection well 12, and at least one pumping well 14. The electrolysis mechanism includes a power supply 16 and at least one anode electrode 18 and at least one negative electrode 20, the positive electrode 18 and the negative electrode 20 are respectively connected to the positive pole of the power supply 16 and the negative pole of the power supply 16, the positive electrode 18 is close to the water injection well 12, ...

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Abstract

The invention relates to a device for repairing heavy metal pollution in soil with in-situ multi-physical field coupling. The device comprises an electrolytic mechanism, a sewage treatment mechanism,at least one water injection well and at least one water sucking well, wherein the electrolytic mechanism comprises a power supply, at least one anode electrode and at least one cathode electrode; theanode electrode and the cathode electrode are respectively connected with the anode of the power supply and the cathode of the power supply; the anode electrode is close to the water injection well;the cathode electrode is close to the water sucking well; both the water injection well and the water sucking well are connected with a sewage treatment mechanism. The invention further relates to a method for repairing heavy metal pollution in soil with in-situ multi-physical field coupling. With the combination of a water power field and an electric power field, soil is repaired, extraction of pollutants which are already adsorbed by an electric field to the anode electrode and the cathode electrode is accelerated by the water power field, and then heavy metals can be removed from soil; on the basis of an in-situ repairing method with multiple physical coupled fields such as electric field-water chemical field-water power field, soil structures and ecological environments of undergroundwater are not damaged, and high repairing efficiency can be achieved.

Description

technical field [0001] The invention relates to the technical field of ecological environment restoration, in particular to a device and method for in-situ multi-physical field coupling restoration of heavy metal pollution in soil. Background technique [0002] With the development of industry and agriculture, soil pollution accidents continue to occur. Relevant data show that as many as 20 million hectares of cultivated land have been polluted by heavy metals in my country, and more than 60 million hectares of farmland have been polluted by various organic pollutants or chemicals. Soil heavy metal pollution has the characteristics of concealment, long-term, irreversible, etc. Soil heavy metal pollution in my country has affected the quality of cultivated land, food safety, and even human health. [0003] At present, the restoration techniques used mainly include various physical and chemical methods and biological methods. Physical and chemical methods mainly include isola...

Claims

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Application Information

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IPC IPC(8): B09C1/00B09C1/08
CPCB09C1/00B09C1/085
Inventor 卢小慧王沛芳崔明轩李兵
Owner HOHAI UNIV
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