Electric heating-extraction/ventilation integrated device for contaminated site in-situ heat desorption

A technology of thermal desorption and electric heating, applied in the restoration of polluted soil, etc., can solve the problems of high energy consumption and high construction cost, and achieve the effect of reducing construction cost, facilitating construction and on-site mediation

Active Publication Date: 2017-08-18
TSINGHUA UNIV
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Problems solved by technology

The existing in-situ electric heating desorption device has high energy

Method used

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  • Electric heating-extraction/ventilation integrated device for contaminated site in-situ heat desorption

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Embodiment Construction

[0022] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0023] Refer below figure 1 Describe the electric heating-extraction / ventilation integrated device 10 for in-situ thermal desorption of polluted sites according to the embodiment of the present invention.

[0024] Such as figure 1 As shown, an electric heating-extraction / ventilation integrated device 10 for in-situ thermal desorption of a polluted site according to an embodiment of the present invention includes an electric heating tube 1, an extraction well tube 2 and an air pump 5. The electric heating tube 1 is set in the extraction...

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Abstract

The invention discloses an electric heating-extraction/ventilation integrated device for contaminated site in-situ heat desorption. The electric heating-extraction/ventilation integrated device for contaminated site in-situ heat desorption comprises an electric heating pipe, an extraction well pipe, an extraction control valve, a ventilating control valve and an air extracting pump, the electric heating pipe is sleeved with the extraction well pipe, an extraction pipe port and a ventilating pipe port are formed in the extraction well pipe, the extraction control valve is arranged at the extraction pipe port, the ventilating control valve is arranged at the ventilating pipe port, and the air extracting pump is connected with the extraction pipe port. According to the electric heating-extraction/ventilation integrated device, the problems that an existing contaminated site in-situ electric heating heat desorption restoration technology is high in energy consumption, heating and extraction/ventilation cannot be achieved on the same device, and the heat utilization rate is low are solved. The device gives the advantages of the electric heating technology into full play and also facilitates engineering operation and using. By adoption of the electric heating-extraction/ventilation integrated device, according to the treatment conditions of each stage of a site, three on-site functional layouts can be conveniently and rapidly adjusted, the problem of the airflow dead zone of a traditional restoration zone is solved, the airflow disturbance effect is improved, and an in-situ mode is kept, but the disposal effect of a strange-position mode is achieved.

Description

technical field [0001] The invention belongs to the field of soil remediation technical equipment, in particular, relates to the field of in-situ electric heating desorption repair technology for polluted sites. Background technique [0002] In-situ thermal desorption technology is an important technology for soil and groundwater remediation of organically polluted sites that are difficult to treat. Rapid remediation of sites polluted by volatile or non-volatile organic compounds has obvious advantages for sites with low permeability pollutants. This technology is to increase the separation, volatilization, or fluidity of organic pollutants from the soil by heating the polluted site and rapidly raising the temperature. Then, the desorbed pollutants are captured and collected by means of extraction, etc., for centralized treatment. [0003] The heating methods of in-situ thermal desorption technology mainly include: resistance heating, steam hot air direct heating and heat c...

Claims

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Application Information

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IPC IPC(8): B09C1/06
CPCB09C1/062B09C2101/00
Inventor 蒋建国宋迎春杨梦霞高语晨徐一雯
Owner TSINGHUA UNIV
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