Soil vapor extraction system and method based on water vapor and hot air combined injection

A gas-phase extraction and water vapor technology is applied in the field of soil remediation, which can solve the problems of low efficiency of soil gas-phase extraction and remediation methods, and achieve the effects of speeding up the soil remediation process, avoiding waste of raw materials and reducing energy supply.

Pending Publication Date: 2018-07-31
INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The invention provides a soil gas phase extraction system and method based on combined injection of water vapor and hot air, which solves the technical problem of low efficiency of the soil gas phase extraction repair method in the prior art

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  • Soil vapor extraction system and method based on water vapor and hot air combined injection

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Embodiment Construction

[0037] The embodiment of the present application provides a soil gas phase extraction system and method based on combined injection of water vapor and hot air to solve the technical problem of low efficiency of the soil gas phase extraction restoration method in the prior art.

[0038] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solutions of the present application. , rather than limiting the technical solutions of the present application, the embodiments of the present application and the technical features in the embodiments can be combined without conflict.

[0039] see figure 1 , a soil gas phase extraction system based on combined injection of water vapor ...

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Abstract

The invention belongs to the technical field of soil restoration and discloses a soil vapor extraction system based on water vapor and hot air combined injection. The system comprises a gas generationdevice for generating mixed gas of water vapor and hot air, an extraction and injection shaft device connected with the gas generation device, and a tail gas treatment device connected with the extraction and injection shaft device, wherein the extraction and injection shaft device is used for obtaining the mixed gas, injecting the mixed gas into a soil shaft and collecting mixtures of gas-phasepollutants from the soil shaft; and the tail gas treatment device collects the mixtures of the gas-phase pollutants in a centralized mode through the extraction and injection shaft device. According to the provided soil vapor extraction system based on water vapor and hot air combined injection, the restoration efficiency can be completely improved.

Description

technical field [0001] The invention relates to the technical field of soil remediation, in particular to a soil gas phase extraction system and method based on combined injection of water vapor and hot air. Background technique [0002] After years of rough economic development, the problem of soil pollution in my country is extremely serious at this stage, among which organic pollutants mainly come from leakage in the process of oil development, transportation and storage, unreasonable discharge in the processing and use of chemical products, landfill waste Leachate leakage, etc., contains various components such as hydrocarbons, halogenated hydrocarbons, oxygenated fuels, pesticides, and leachate containing complex mixed pollutants. Among them, the leakage of oil storage tanks in gas stations has become the biggest source of pollution that threatens the safety of soil and groundwater. [0003] Soil vapor extraction is the most widely used soil remediation technology for re...

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Application Information

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IPC IPC(8): B09C1/00B09C1/06
CPCB09C1/00B09C1/005B09C1/06B09C2101/00
Inventor 刘磊黄茜万勇魏明例李振泽
Owner INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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