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Electrokinetic remediation method and device of heavy metal contaminated soil

A technology of polluted soil and electric restoration, applied in the restoration of polluted soil, etc., can solve the problems of high equipment investment, high treatment cost, secondary pollution, etc., and achieve high treatment cost, low treatment cost, and high equipment investment Effect

Inactive Publication Date: 2014-04-23
HENAN POLYTECHNIC UNIV
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Problems solved by technology

It solves the problems of high equipment investment, high treatment cost and easy to cause secondary pollution of conventional soil remediation technology

Method used

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  • Electrokinetic remediation method and device of heavy metal contaminated soil

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Embodiment Construction

[0012] Hereinafter, the invention will now be described more fully with reference to the accompanying drawings, in which various embodiments are shown. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0013] Hereinafter, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

[0014] The principle of electrodynamic restoration of metal-contaminated soil technology is as follows: similar to a battery, two electrodes inserted into the medium (soil) are used to apply a low-voltage DC electric field at both ends of the contaminated medium, and under the action of low-intensity DC, water-soluble or adsorbed in the soil Pollutants on the surface of the ...

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Abstract

The invention relates to an electrokinetic remediation method and device of heavy metal contaminated soil. The device comprises a pre-treatment system, a direct current voltage-stabilizing power supply, an electrokinetic electrode, a main control system and an after-treatment system, wherein the main control system is connected with and controls the pre-treatment system, the direct current voltage-stabilizing power supply and the after-treatment system; the direct current voltage-stabilizing power supply supplies power to the electrokinetic electrode. According to an electrokinetic soil remediation technology, the heavy metal contaminated soil can be remediated in situ, secondary pollution is avoided, and the treatment cost is low. The problems of high equipment investment, high treatment cost, high probability of secondary pollution and the like of a conventional soil remediation technology are solved.

Description

technical field [0001] The invention relates to an electrodynamic restoration method and a device for soil polluted by heavy metals. Background technique [0002] Soil pollution has not received the attention it deserves for a long time. At present, the problem of soil pollution caused by various pollutants is quite serious. After the soil is polluted, the polluted topsoil with high concentration of pollutants is easy to enter the atmosphere and water body under the action of wind and water respectively, leading to other secondary ecological environmental problems such as air pollution, surface water and groundwater pollution, and ecosystem degradation. Heavy metal polluted soil is widespread and abundant, and the heavy metal pollution of vegetables in the suburbs of large and medium-sized cities is particularly serious. According to the data in the 2000 China Environmental Status Bulletin issued by the State Environmental Protection Administration: For 300,000 hm 2 Sampl...

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Application Information

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IPC IPC(8): B09C1/00
Inventor 贾保军杨伟黄兴宇
Owner HENAN POLYTECHNIC UNIV
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