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In-situ polluted soil leaching system and method

A technology of polluted soil and treatment system, applied in the restoration of polluted soil and other directions, can solve the problems of small affected area and uneven seepage, and achieve the effect of large affected area, prevention of secondary pollution, and thorough treatment.

Inactive Publication Date: 2014-04-23
韩清洁
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Problems solved by technology

[0005] However, the current in-situ leaching technology mostly uses vertical wells to inject eluent, which has the problems of small affected area and uneven seepage.

Method used

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  • In-situ polluted soil leaching system and method

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Embodiment Construction

[0018] Such as figure 1 with figure 2 An in-situ leaching treatment system for contaminated soil is shown, including a sewage treatment device 1, and a first layer of horizontal wells 2 connected to the sewage treatment device 1, a second layer of horizontal wells 3, a third layer of horizontal wells 4 and a vertical Pumping wells 5; the horizontal wells 2 of the first layer, the horizontal wells 3 of the second layer and the horizontal wells 4 of the third layer are arranged alternately.

[0019] A method for in-situ leaching treatment of contaminated soil, comprising the following steps:

[0020] 1) The leaching of the first layer of contaminated soil: the first layer of horizontal wells 2 is used as an injection well, injecting eluent to clean the first layer of contaminated soil; at this time, the second layer of horizontal wells 3 is used as a water outlet well, and vacuum extraction is carried out. Collect the eluate that leaches the first layer of polluted soil, and ...

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Abstract

The invention discloses an in-situ polluted soil leaching system and method. The in-situ polluted soil leaching system comprises a sewage treatment device and a plurality of layers of horizontal wells connected with the sewage treatment device; if necessary, a vertical pumping well can be arranged. The in-situ polluted soil leaching system comprises but not limited to a first layer of horizontal well, a second layer of horizontal well and a third layer of horizontal well; all the layers of horizontal wells are arranged in a staggered manner. The method comprises the step of leaching polluted soil layer by layer. The in-situ polluted soil leaching system and method provided by the invention can be used for processing two layers of polluted soil but is not limited to two layers. With the adoption of the in-situ polluted soil leaching system and method provided by the invention, the problems caused by an existing in-situ leaching method of small influence area and non-uniform seepage can be solved to a great extent.

Description

technical field [0001] The invention belongs to the technical field of remediation and treatment of polluted soil, and in particular relates to an in-situ leaching treatment system and method for polluted soil. Background technique [0002] With the continuous acceleration of industrialization and urbanization in our country, the problem of soil environmental pollution is becoming more and more serious. About 10% of the farmland soil is polluted, and the relocation of enterprises leaves hundreds of thousands of hectares of polluted sites, which poses a threat to the sustainable use of land resources and the ecological safety of agricultural products. . The control and remediation of soil pollution can be roughly divided into several categories such as physics, chemistry, biology, and agriculture according to their principles. Among them, the soil leaching restoration technology has the characteristics of wide application range, quick effect, large treatment capacity and rem...

Claims

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Application Information

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IPC IPC(8): B09C1/02
Inventor 韩清洁
Owner 韩清洁
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