In-situ self-sustaining contaminated soil restoring device based on plant bionics and method

A bionic technology for polluted soil and plants, applied in the restoration of polluted soil, etc., can solve problems such as affecting recycling, changing soil physical and chemical properties, and limited treatment efficiency, and achieves the effect of simple operation and labor saving

Active Publication Date: 2014-04-23
CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The above remediation technologies for polluted soil (heavy metals, organic matter pollution, etc.) have reached a consensus in systematic engineering, but the comprehensive remediation project is still immature, and there are still technical limitations. For example, physical remediation will change the physical and chemical proper

Method used

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  • In-situ self-sustaining contaminated soil restoring device based on plant bionics and method
  • In-situ self-sustaining contaminated soil restoring device based on plant bionics and method
  • In-situ self-sustaining contaminated soil restoring device based on plant bionics and method

Examples

Experimental program
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Effect test

Embodiment 1

[0044] In-situ self-sustaining repair device for contaminated soil based on plant bionics, the structure is as follows figure 1 shown. Including main body A, packing B, evaporator C, permeable membrane D and accessories E.

[0045] The main body A is a hollow pipe made of polypropylene material; the permeable membrane D is attached to the bottom of the main body A through the fitting E2, and directly attached to the pipe wall of the main body A; the filler B is tightly filled in the main body A and compacted; the evaporator C is passed through the fitting E1 is attached to the top of body A.

[0046] In this example, the main body A is a cylindrical hollow pipe with an inner diameter of 27mm, an outer diameter of 29mm, and a height of 98mm; in addition, it can also be made into a cuboid hollow pipe or hollow pipes of other shapes, and the thickness of the pipe wall can support the whole device. It is advisable; you can also choose other hydrophilic porous ceramic tubes or gr...

Embodiment 2

[0053] Determination of transpiration rate of in-situ self-sustaining remediation device for contaminated soil based on plant bionics and comparison with plant transpiration rate.

[0054] The transpiration rates of the in-situ self-sustaining remediation device for contaminated soil based on plant bionics of the present invention were measured in solution environment and soil environment, and compared with those of rice. The results are shown in Table 2.

[0055] Table 2 The transpiration rate of the restoration device of the present invention in solution and soil environment and its comparison with rice

[0056]

[0057] It can be seen from Table 2 that the transpiration rate of the remediation device in both the solution environment and the soil environment was significantly higher than that of rice in a short period. In addition, the repair device itself can be used for a long time in a long period, and is less restricted by the natural environment and conditions; plant...

Embodiment 3

[0060] The in-situ self-sustaining remediation method of polluted soil based on plant bionics is used to treat the pollutant solution.

[0061] The purpose of treating the polluted liquid in this embodiment is to verify that the water-soluble pollutants can be treated by the device and method of the present invention. The biologically threatening pollutants in the soil are also soluble in water, so this step is the first step in the verification of in-situ self-sustaining restoration of contaminated soil. The pollutants in the solution can be treated by the method described in the present invention, and the soil Pollutants that can be dissolved in water can also be drawn into the remediation device by transpiration through capillary phenomenon, and be adsorbed and disposed of. At the same time, this embodiment also proves that this method is also applicable to the field of sewage treatment.

[0062] The test results show that the treatment effect of the repair device and the ...

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Abstract

The invention provides an in-situ self-sustaining contaminated soil restoring device by simulating the capillary phenomenon and the transpiration function of a plant and a method for restoring soil by utilizing the device. The restoring device comprises the following members: a main body, filling materials, an evaporator and accessories, wherein the main body is a hollow pipe fitting which is tightly filled with the filling materials; the filling materials are supported by depending on the accessories; the evaporator is arranged at the top end of the main body pipe fitting; the accessories are mainly of supporting materials for mounting other members. The specification of the restoring device is selected and the distribution density and depth are selected according to soil contamination conditions, and then the restoring device is inserted into the soil, so that contaminants in the soil are driven to move by utilizing the capillarity phenomenon and the transpiration function of the restoring device so as to be transferred into the restoring device. Thus, the contaminants in the soil are effectively removed.

Description

technical field [0001] The invention relates to a repair device and method for contaminated soil, in particular to a repair device and method for in-situ self-sustaining repair of soil polluted by heavy metals and organic matter based on plant bionics, and belongs to the field of environmental protection. Background technique [0002] Soil is the material basis for human survival, an indispensable and non-renewable natural resource for human beings, and an important part of the human environment. Soil pollution is extremely harmful to human beings. It not only directly leads to the reduction of food production, but also affects human health through the food chain. In addition, the pollutants in the soil pass through the groundwater and the transfer of pollutants constitutes adverse coercion and harm to the human living environment on multiple levels. [0003] At present, soil pollution remediation technologies mainly include physical remediation, chemical remediation, biolo...

Claims

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Application Information

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IPC IPC(8): B09C1/00B09C1/08
Inventor 徐愿坚韩君杨舒徐贵华陈凤贵
Owner CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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