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Electric surfactant combined repair contaminated soil experimental device

A surfactant and soil-contaminated technology, applied in the field of pollutant treatment in soil, can solve problems such as infiltration and pollution of eluent

Active Publication Date: 2013-01-30
JILIN ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the disadvantages of the prior art, the present invention provides an experimental device for joint restoration of polluted soil by electrokinetic surfactants that improves the uniformity of surfactant dosing in soil and solves the problem of eluent seepage pollution.

Method used

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  • Electric surfactant combined repair contaminated soil experimental device
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Examples

Experimental program
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Effect test

Embodiment 1

[0019] Embodiment 1 The structure of the electrokinetic surfactant combined repairing contaminated soil experimental device of the present invention

[0020] The structure of the experimental device is as figure 1 shown. figure 1 Among them, 1 is the electrode; 2 is the electrode chamber; 3 is the sampling port of the polluted area; 4 is the DC power supply; 5 is the regulating tank; 6 is the water inlet and outlet; 7 is the uncontaminated soil; 8 is the polluted soil; 10 is the sampling port of the uncontaminated area; 11 is the eluent outlet; 12 is the porous baffle in the electrode chamber; 13 is the porous baffle at the bottom of the reactor.

[0021] The main body of the device of the present invention can be a prismatic tube or a cylindrical tube with an open upper end and a closed bottom end, inside which is a soil chamber, the lower part is filled with uncontaminated soil 7, and the upper part is filled with polluted soil 8 (soil containing polychlorinated biphenyls)....

Embodiment 2

[0024] Example 2 A size of electrokinetic surfactant combined remediation of polluted soil device

[0025] In order to meet the needs of the test, the main body of the device of the present invention is made of plexiglass, which can visually observe the experimental phenomenon. Its height is 25 cm, and the height of the soil chamber in it is 20 cm. There are electrode chambers 2 on the two opposite sides respectively, the width of which is 2.5 cm, and the two electrodes 1 placed in the electrode chambers 2 are plate electrodes of graphite material with a thickness of 0.5 cm.

Embodiment 3

[0026] Embodiment 3 experimental process

[0027] First inject water into the soil chamber through the water inlet and outlet 6 at the bottom of the experimental device, and then put a certain amount of uncontaminated soil 7 into the soil chamber from the top of the main body, continue to enter the water, and at the same time compact the soil layer to drive out the air bubbles, and repeat the layering process. into uncontaminated soil7 until compatible with figure 1 The upper part of the middle eluent outlet 11 is flush, and the uncontaminated area is saturated. Add polluted soil 8 to the top of the polluted area (the lower part of the overflow port 9) in the same way. When the polluted area reaches saturation, water is released from the water inlet and outlet 6 to make the water level drop. At this time, the polluted area and the unpolluted area are both saturation band. The layer of uncontaminated soil 7 flush with the eluent outlet 11 can be considered as a transitional b...

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Abstract

The invention relates to an electric surfactant combined repair contaminated soil experimental device, belonging to the technical field of disposal of pollutants in soil. Contaminated soil (8) and uncontaminated soil (7) are arranged into a main body, and an eluate outlet (11) is formed in the side surface of the main body; two electrode chambers (2) are formed between a porous baffle plate (12) of the electrode chambers and the inner side surfaces of the main body; two electrodes (1) are respectively electrically connected with a direct current power supply (4); eluate in a regulating tank (5) is injected into the electrode chambers (2) via valves; and the porous baffle plate (13) at the bottom of a reactor is arranged above a water inlet and outlet (6). The electric surfactant combined repair contaminated soil experimental device which is provided by the invention can improve the application uniformity of a surfactant in soil, solve the problem of infiltration and pollution of the eluate and improve the disposal efficiency of the contaminated soil. The invention also provides a device for researching test conditions for removing polychlorobiphenyl in the contaminated soil and measuring the removal rate of the pollutants.

Description

technical field [0001] The invention belongs to the technical field of pollutant treatment in soil, and relates to an experimental device for jointly repairing polluted soil by electric motor and surfactant. Background technique [0002] With the development of the economy and the improvement of people's living standards, the problem of soil pollution has been paid more and more attention by governments and the public. The main pollution of the soil environment is persistent toxic substances, including polycyclic aromatic hydrocarbons, organic pesticides, polychlorinated biphenyls, heavy metals, etc. Compared with other pollutants, the pollution of organic toxic substances in soil is more common, and most of these pollutants are persistent, bioaccumulative and potentially carcinogenic, affecting plant growth and agricultural product quality, and endangering human health and ecological environment safety. [0003] At present, the methods used to deal with PCBs mainly include...

Claims

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Application Information

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IPC IPC(8): B09C1/02B09C1/08
Inventor 陈涛孙成勋杨晓瑛朱宝余
Owner JILIN ELECTRIC POWER RES INST
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