In-situ thermal desorption remediation system and method for organic contaminated soil

A technology of organic pollution and remediation method, which is applied in the field of soil remediation, which can solve the problems of poor pertinence in the heating depth range, long heating time, energy waste, etc., to increase soil infiltration capacity, fast heating speed, and increase extraction gas effect of circulation

Inactive Publication Date: 2020-09-15
上海康恒环境修复有限公司
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Problems solved by technology

At present, in situ thermal desorption engineering cases, most of the heating wells are heated around the whole bo

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  • In-situ thermal desorption remediation system and method for organic contaminated soil
  • In-situ thermal desorption remediation system and method for organic contaminated soil

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[0019] The in-situ thermal desorption repair system and method of the present invention will be described in further detail below with reference to the accompanying drawings and the embodiments of the present invention.

[0020] figure 1 It is a schematic diagram of the in-situ thermal desorption remediation system for organic polluted soil according to the present invention. figure 2 This is a schematic diagram of the layout of the wells of the in-situ thermal desorption remediation system for organic polluted soil according to the present invention.

[0021] refer to figure 1 As shown, the in-situ thermal desorption system mainly includes: power supply and distribution system, heating system, extraction system, tail gas and tail water treatment system, monitoring system and surface barrier system.

[0022] The additional heat wells for in-situ heat removal are arranged in a regular triangle or regular hexagon, with a spacing of 2 to 4m. During the implementation of the pr...

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Abstract

The invention relates to an in-situ thermal desorption remediation system and method for organic contaminated soil. The in-situ thermal desorption remediation system comprises a power supply and distribution system, a heating system, an extraction system, a tail gas and tail water treatment system, a monitoring system and a ground blocking system. The heating system is composed of a vertical heating well, a high-frequency electromagnetic field generator arranged in the heating well and a generator control device. The electromagnetic field generator is connected to the power supply and distribution system on the ground through a control box; an output end power supply rectifies, filters and inverts power-frequency alternating current into high-frequency alternating current through a controlpanel, the high-frequency alternating current is connected to an electromagnetic heating coil through a connecting wire to generate an alternating magnetic field; and a conductor generates eddy current under electromagnetic induction to cause heating of the conductor, so that temperature is transferred in soil, the soil is rapidly heated, and organic pollutants are evaporated. According to the technical scheme, heating of the target repair depth is targeted, the heating speed is high, the heat utilization efficiency is high, and the repair efficiency can be remarkably improved.

Description

technical field [0001] The invention relates to the technical field of soil remediation, in particular to a system and method for in-situ remediation of polluted soil by using the eddy current effect generated by a high-frequency strong magnetic field generator to heat. Background technique [0002] In recent years, it is imminent to seek a contaminated site remediation technology with good effect, low cost and little impact on the environment. At present, some traditional in-situ remediation technologies, such as in-situ injection of chemical agents and multiphase extraction, have been applied in the remediation of many contaminated sites. However, these technologies face problems such as the small influence radius due to the small soil permeability coefficient, and the difficulty in fully contacting the pollutants with the remediation agent, which affects the remediation effect. [0003] In-situ thermal desorption technology is getting more and more attention in the remed...

Claims

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Application Information

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IPC IPC(8): B09C1/06
CPCB09C1/06B09C2101/00
Inventor 刘扣王森林德坡余湛郑阳陈俊杰刘荣琴刘继东王加华王湘徽
Owner 上海康恒环境修复有限公司
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