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Resistance heating thermal desorption device for repairing contaminated soil and underground water

A resistance heating and polluted soil technology, applied in the restoration of polluted soil, etc., can solve the problem of high construction cost, achieve the effect of precise optimization of heating, reduce energy consumption, and keep the circuit smooth

Pending Publication Date: 2020-01-14
ZHONGKE DINGSHI ENVIRONMENTAL ENG CO LTD
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Problems solved by technology

[0004] However, in the case of CN108114970A, in addition to setting positive / negative electrodes, separate injection wells and extraction wells are required, and the ratio of injection wells to electrode wells is 1:3 to 1:6, which makes the construction cost too high

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  • Resistance heating thermal desorption device for repairing contaminated soil and underground water
  • Resistance heating thermal desorption device for repairing contaminated soil and underground water
  • Resistance heating thermal desorption device for repairing contaminated soil and underground water

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Embodiment Construction

[0029] Some specific embodiments of the present invention will be described in detail below in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the drawings designate the same or similar parts or parts. It should be understood by those skilled in the art that the drawings are not necessarily drawn to scale.

[0030] Such as figure 1 , Figure 4 As shown, the present invention provides a resistance heating thermal desorption device for remediating polluted soil and groundwater, mainly in which a plurality of fire wires arranged in an equilateral triangle are arranged in the remediation site (including the container 6 filled with polluted soil) Electrode 3, the three live wire electrodes 3 arranged in an equilateral triangle are respectively connected to one phase of the three-phase four-wire alternating current, and a neutral electrode 5 is arranged at the center of each equilateral triangle, and the neutral elec...

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Abstract

The invention provides a resistance heating thermal desorption device for repairing contaminated soil and underground water. According to the device, a plurality of live wire electrodes arranged in aregular triangle shape are further arranged in a repairing site; the three live wire electrodes arranged in the regular triangle shape are respectively connected to one phase of three-phase four-wirealternating current; the centers of each regular triangle are respectively provided with a neutral electrode; the neutral electrodes are connected to the zero line of the three-phase four-wire alternating current; a water injection pipe is integrated in the live wire electrode; and an extraction pipe is integrated in the neutral electrode. According to the invention, by arranging the neutral electrodes, the number of the current paths in the heating area can be increased from original 3 to 6, so that the heating effect is good and uniform; and the live wire electrode integrates the injection function, and the neutral electrode integrates the extraction function, so that the construction cost is reduced, the corresponding functions can be jointly realized at the same time point through theintegration to cooperatively use, the energy consumption is reduced, and the efficiency is improved.

Description

technical field [0001] The invention relates to a resistance heating thermal desorption device suitable for repairing VOCs (volatile organic compounds) and part of SVOCs (semi-volatile organic compounds) polluted soil and groundwater. Background technique [0002] The in-situ thermal desorption technology is an important technology in the in-situ remediation technology of polluted soil. Its main principle is to heat the polluted soil to above the boiling point of the target pollutant in situ, so as to promote the gasification and volatilization of the pollutant, so that the target pollution Separation and removal of substances from soil particles. [0003] Resistance heating in-situ thermal desorption technology is an in-situ thermal desorption technology that uses current formed between electrodes and heat generated by soil resistance to perform thermal desorption treatment. More typical has CN108114970A. [0004] However, in the case of CN108114970A, in addition to setti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/06B09C1/08B09C1/10
CPCB09C1/062B09C1/08B09C1/10
Inventor 黄海周广东王海东刘爽初文磊牛静张文杨勇殷晓东
Owner ZHONGKE DINGSHI ENVIRONMENTAL ENG CO LTD
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