KR100667465B1 - The clean-up and remediation equipment of contaminated ground mixed with cohesionless and cohesive soils by electro flushing reactive pile technology - Google Patents

Abstract

The present invention uses contaminants in soils contaminated with contaminated sandy soils and viscous soils as well as contaminated sandy soils and viscous soils by using the electric power of the electric restoration technique, the cleaning power of the soil washing technique, and the pollutant reaction harmlessness and function of the reaction pile technique. Purification of contaminated soil mixed with sandy soil and viscous soil by the electric washing reaction pile technique that purifies and restores the contaminated soil by moving the contaminants in the ground in a certain direction without extracting it to the ground and then collecting it and then making it harmless after the reaction treatment. In addition, the present invention provides a restoration method and apparatus.

The present invention for achieving the above object is the first step of installing the positive electrode electrode 10 and the negative electrode electrode 20 at predetermined intervals in the interior of the sandy soil, clay soil, sandy soil and mixed soil 100 mixed with clay soil; And a second step of installing a reaction file 60 to allow the pollutants to be adsorbed and harmless on the cathode electrode 20 side, and to convert the DC power to the anode electrode 10 and the cathode electrode 20. A third step in which the groundwater and contaminants in the contaminated ground 100 move from the anode electrode side 10 to the cathode electrode 20 side by electrolysis, electroosmotic phenomenon, and electrophoresis, and the anode electrode rod The fourth step of supplying the washing water and the chemical solution to the inside of the 10 to move the groundwater and contaminants in the contaminated ground 100 from the cathode electrode rod 10 side to the cathode electrode rod 20 side due to advection and diffusion phenomena. And a cathode electrode at the anode electrode rod side 10. 20 is as the ground water and contaminants move through the response file 60 is adsorbed to the reactants of the reaction file 60 or to remove the side to be made harmless to the fifth step in the technological base.

In addition, the cathode electrode rod 10 and the cathode electrode rod 20 are installed in the soil ground 100, and the reaction pile 60 is installed to adsorb and remove the pollutants on the cathode electrode rod 20 side to purify. Power supply means 30 for supplying power to the anode electrode 10 and the cathode electrode 20, and the washing water supply means 40 for supplying the washing water and chemical solution to the anode electrode 10 is installed on the ground Characterized in that.

Electric restoration technique, soil washing technique, reaction pile, solar electricity, sandy soil, viscous soil, soil

Description

The clean-up and remediation equipment of contaminated ground mixed with cohesionless and cohesive soils by electro flushing reactive pile technology}

1 is a conceptual diagram showing the principle of purification and restoration of the soil ground according to the present invention,

2 is a conceptual diagram showing an overall process diagram of the present invention;

3 is a layout view of installing a plurality of rows of a cathode electrode, a cathode electrode, and a reaction file according to the present invention;

4 is a conceptual diagram showing the installation of the anode electrode and cathode electrode rod according to the present invention,

5 is a conceptual diagram showing the installation of the reaction file of the present invention;

Figure 6 is an application of the present invention applied to the contaminated ground where there is sandy soil on the top and viscous soil on the bottom,

7 is an application of the present invention applied to the contaminated ground in which viscous soils are present at the top and sandy soils are at the bottom;

8 is an application of the present invention applied to the contaminated ground where the sandy soil is present in the upper and lower and viscous soil in the center,

9 is an application of the present invention applied to the contaminated soil in which sandy soils and viscous soils are present in layers.

10 is an application of the present invention applied to the soil contaminated with viscous earth pocket inside the sandy soil,

Figure 11 is an application of the present invention applied to the soil contaminated with viscous earth pockets in the ground where the sandy soil and viscous soil layered mutually,

12 is an application of the present invention applied to the fine sand, pure viscous soil, sandy soil and clay mixed homogeneously and heterogeneously,

FIG. 13 is an application diagram illustrating a method of installing the anode electrode and the cathode electrode electrode of the present invention to reach a rock or an impermeable layer, or to install the anode electrode and the cathode electrode, and before and after the cathode electrode rod.

<Description of the symbols for the main parts of the drawings>

(10): anode electrode (20): cathode electrode

(30): power supply means (31): electricity generating unit

(32): Commercial Electricity (33): Solar Electricity

(34): oil power generation electricity (35): power supply

(36): AC / DC converter (37): Electric controller

(38): electric wire (39): insulation

(40): washing water supply means (41): water tank

(42): water pressure pump (43): chemical solution bottle

(44): Chemical solution pressure pump (45): Valve

(46): flow rate gauge (50): groundwater extraction means

(51): Pumping pump (52): Extraction water reservoir

(53): water treatment device (53a): on-site water treatment device

(53b): off-site water treatment device (54): treated water tank

(60): reaction pile (100): soil contamination

200: sandy soil 300: clay

(301): clay clay pocket 400: rip

(401): adsorptive contaminants (402): water-soluble contaminants

500: impermeable layer

In the present invention, in the ground where a mixture of viscous and sandy soils is mixed in combination with an electric restoration technique, a soil washing technique, and a reaction pile technique, contaminants in the viscous soil are moved from the anode direction to the cathode direction by electric force, and the pollutants in the sandy soil are It relates to the treatment of contaminants in the ground using the reaction adsorption detoxification function of the reaction pile by moving and condensing the contaminants of heavy metals, organic substances and inorganic substances in the ground by washing power.

In general, except for special areas, the soil that forms the land is in the form of mixed or narrowed coarse sand and clay. In addition, the pollutants in the ground are usually present in a variety of evenly mixed organic materials, heavy metals, inorganic materials and the like. Various purification techniques are used for the purification of the area consisting of such complex soil and the area contaminated with various pollutants.

The above various purification techniques include electro remediation, soil flushing, permeable reactive barrier, excavation transfer technique, amniotic fluid treatment technique, microbial restoration technique, etc. The explanation is as follows.

Electro remediation is the transfer of water and pollutants by electric force, and has been applied to dehydration and stabilization of soil in civil engineering since the 1930s, and to clean up polluted soil in the environment since the early 1980s. It was. In this electro-restore technique, when two electrodes are inserted into a saturated viscous soil and a direct current is applied, water is ionized around the electrodes, causing an electrolysis reaction.

At this time, the oxidation of water occurs at the anode and the reduction of water occurs at the cathode by the electrolysis reaction. Therefore, an acid front is formed at the anode and a base front is formed at the cathode. Oxygen is released at the anode and hydrogen is released at the cathode. Over time, the acid wire produced at the anode travels through the soil to the cathode, which causes the pH in the soil to become partially acidic.

It is usually necessary to desorb heavy metals from the soil in order to effectively clean the contaminated soil. The adsorption / desorption mechanism depends on the charge density of the clay mineral surface in the soil, the cation exchange capacity, the nature and concentration of the cationic material, and the presence of organic and carbonates. The adsorption / desorption mechanism also depends greatly on the pH.

Therefore, the heavy metal ions are partially crystallized and precipitated by the base wire generated at the cathode by electrolysis, and the degree of precipitation depends on the type of ionic material and is greatly affected by the pH of soil particles and pore water. The precipitate precipitated in the cathode portion is dissolved as the acid wire generated at the anode proceeds to the cathode, and the degree of dissolution is different depending on soil and sediment types.

Meanwhile, contaminants present in the pore water or desorbed from the surface of the particles are moved in the positive or negative direction according to their charge characteristics. The pollutants are moved to the cathode through the soil by the advection by the electroosmotic, the ion migration by the electroslope, and the diffusion by the gradient. By this mechanism, the cations in the soil and groundwater are collected at the cathode and the anions are collected at the anode. In particular, contaminants such as heavy metals are concentrated on the cathode, and the effluent is extracted to the ground. In addition, pollutants are removed from the groundwater by using environmental engineering methods such as ion exchange.

On the other hand, the soil washing technique is injected into the ground through the injection well or pure water containing additives to increase the solubility of the contaminants in the sandy soil. In the opposite extraction well, contaminated groundwater is extracted from the underground aquifer and the groundwater treated on the ground is recycled. Cleaning fluids containing reclaimed groundwater or desorbed contaminants are properly disposed of to meet treatment standards before being sent to public sewage treatment plants or storage tanks. The recycled cleaning liquid is reused in the cleaning process to maximize economics.

On the other hand, the permeable reaction wall technique mainly installs permeable reaction walls at the bottom of the groundwater flow direction of highly permeable sandy soils, and removes contaminants in the contaminated groundwater to make clean groundwater. It is to be cleaned at the original location of the site underground without treatment. This has the opposite concept to impermeable aberration walls, which are currently applied mainly to unsanitary landfill blocks. Impervious barrier wall is installed around the polluted area to prevent pollutants from leaking out, but permeable barrier is installed on both sides of the polluted area and permeable reactive wall is installed below the groundwater flow direction. As the material collects on both sides and passes downstream, contaminants are filtered out or removed from the reactants in the reaction wall.

Among the conventional soil purification and restoration techniques as described above, the electro-restore technique uses heavy metals and inorganic substances in the ground by using electrolysis, electroosmotic phenomenon, and electrophoresis in cohesive soils with low permeability. It is used to extract pollutants such as pollutants to the cathode and extract them to the ground using a pump to remove them. However, this technique is less applicable because of the weak osmotic phenomenon in sandy soils with high permeability. There is this.

In addition, the soil washing technique extracts water-soluble contaminants in groundwater and organic substances in the ground using a pump to pump the ground water by using water washing power and chemical solution desorption power in cohesionless soil. Although it is used to remove, this technique has a problem that its applicability is inferior because the movement of water is not smooth in viscous soils with low permeability.

In addition, permeable reactive barriers are provided with permeable reactive walls at the bottom of the groundwater flow direction of high permeability sandy soils and low permeability clay soils to remove contaminants in the contaminated groundwater passing therethrough. This method is to purify pollutants from the ground of the site instead of extracting and treating the pollutants to the ground, but this technique requires the parallel movement of contaminated water to the point where the permeable reaction wall is installed. In addition, the permeable reaction wall has a problem in that the excavation work of the wall takes a lot of work as a process of inserting the reactant after forming the wall in the ground.

As such, these purification and restoration techniques have their own characteristics, but they need to be improved for each other's shortcomings, and several techniques or systems can be used to separate soils contaminated with various contaminants in mixed clay and sandy soils. It is not necessary to apply it but to apply it as a single integrated technique or system.

The present invention is created to solve the conventional problems as described above, as well as the soil contaminated by using the electric power of the electric restoration method and the cleaning power of the soil washing method and the pollutant reaction harmlessness and function of the reaction pile method In addition, instead of extracting and treating contaminants from the ground mixed with contaminated sandy soils and viscous soils, they move the contaminants in a constant direction in the ground, collect them, and decompose them after the reaction to clean and restore the contaminated ground. An object of the present invention is to provide an apparatus for the purification and restoration of contaminated soil mixed with sandy soil and viscous soil by reaction pile technique.

The present invention for achieving the above object is the first step of installing a positive electrode electrode and a negative electrode electrode at a predetermined interval inside the soil soil, clay soil, clay soil mixed with sandy soil and viscous soil, contaminants on the cathode electrode side A second step of installing a reaction file to absorb and detoxify the ground, and supplying a DC-converted power to the anode electrode and the cathode electrode, thereby causing the groundwater in the soil to be contaminated by electrolysis, electroosmosis, and electrophoresis. And a third step in which pollutants move from the anode electrode side to the cathode electrode side, and washing water and chemical solution are supplied to the inside of the anode electrode rod to allow the groundwater and contaminants in the soil to be contaminated by diffusion and diffusion. In step 4, the ground water and the contaminants moved from the cathode electrode side to the cathode electrode side are moved to the cathode electrode side. To remove as it passes the file is adsorbed by the reactants in the reaction, or a file made of a detoxifying fifth step is characterized.

In addition, the positive electrode electrode and the negative electrode electrode that is installed at a predetermined interval inside the soil, and the reaction file is installed on the cathode electrode side to remove and remove the contaminants of the contaminated groundwater moving from the anode electrode to the cathode electrode, and to purify; An electricity generator for generating electricity supplied to the anode and cathode electrodes, a power supply for supplying electricity generated from the electricity generator, and an AC connected to the power supply to convert electricity into direct current. A power supply means consisting of a / DC converter, an electric controller for supplying the cathode electrode and the cathode electrode by controlling the electricity converted from the AC / DC converter by a predetermined amount, and supplying the washing water and the chemical solution to the anode electrode. Characterized in that the wash water supply means having a water tank and a chemical solution tank.

Hereinafter, the configuration and operation of the present invention will be described in detail with reference to the accompanying drawings.

1 is a conceptual diagram showing the principle of purification and restoration of the contaminated ground according to the present invention, when the soil is contaminated, there is a water-soluble contaminant 402 dissolved in water between each of the granules 400 and the granules 400 Adsorbent contaminant 401 is adsorbed to 400. The cathode electrode rod 10 and the cathode electrode rod 20 are inserted into the ground, and the cathode electrode rod 10 and the cathode electrode rod are installed after the reaction pile 60 filtering the contaminants on the cathode electrode rod 20 side. When the DC power is applied to (20), an electroosmotic phenomenon and an electrophoretic phenomenon occur. At this time, when the washing water is injected for washing the soil, the advection phenomenon occurs. In addition, the pollutants with high concentrations cause the pollutants in the ground to move from the positive electrode to the negative electrode as a whole due to the diffusion phenomenon to move to the low concentration in the soil.

That is, the contaminated groundwater in which contaminants are embedded is moved toward the cathode from the anode electrode 10 to the cathode electrode 20 through the soil gap. At this time, when the contaminated ground water passes through the reaction file 60 which is passed through the permeable reaction file 60 installed in the cathode part, the contaminated ground water is changed into the purified ground water, which is the contaminant in the contaminated ground water reaction file 60. It reacts with the reactants inside, so it is adsorbed and removed and becomes purified groundwater.

Figure 2 is a conceptual diagram showing the overall process of the present invention, when the non-contaminated soil mixed with cohesive soil and sandy soil as well as cohesive soil and sandy soil becomes contaminated ground by contaminants, the contaminants are discharged through an electric washing reaction pile technique. Will be removed.

The electro-cleaning reaction pile technique maintains a predetermined gap inside the soil, installs a positive electrode 10 and a negative electrode 20, and the reaction pile for purifying contaminants on the negative electrode 20 side After the 60 is installed, power is supplied to the anode electrode 10 and the cathode electrode 20 through the power supply means 30 so that electrolysis, electroosmosis, and electrophoresis in the ground occur.

In addition, the positive electrode electrode 10 is connected to the washing water supply means 40 to inject the washing water into the inside of the positive electrode electrode 40, and the ground electrode extraction means 50 is installed in the negative electrode electrode 20 to the reaction When the function of the pile 60 is paused, the groundwater is extracted to the ground.

Here, the positive electrode 10 and the negative electrode 20 is a porous porous tube, the shape is preferably formed in a circular, square, rectangular, the material is carbon, graphite, iron steel, aluminum, stainless steel It is assumed that one or more are mixed.

On the other hand, the power supply means 30 is a power supply unit for supplying electricity generated by the electricity generating unit 31 and the electricity generating unit 31 to the cathode electrode rod 10 and the cathode electrode rod 20 And an AC / DC converter 36 connected to the power supply device 35 to convert electricity into direct current, and the DC electricity converted by the AC / DC converter 36 by a predetermined required amount. It consists of an electrical controller 37 applied to the positive electrode 10 and the negative electrode 20.

The electricity generating unit 31 may use a commercial electricity 32, or may use a solar generator 33, the oil generator 34.

On the other hand, it is supplied to the anode electrode 10 and the cathode electrode 20 through the electric controller 37, the power converted into direct current is supplied by adjusting the current (mA) and voltage (V) appropriately.

On the other hand, the washing water supply means 40 is connected to the water tank (41) in which the soil washing water is stored, the chemical solution tank (43) in which the chemical solution is stored, and the water tank (41), the anode electrode (10) It consists of a water pressure pump 42 for supplying the washing water into the inside, and a chemical solution pressure pump 44 stored in the chemical solution container 43 to supply the chemical solution into the anode electrode 10.

In addition, between the water tank 41 and the water pressure pump 42, the chemical solution tank 43 and the chemical solution pressure pump 44 is provided with a valve 45 and a flow gauge 46 for adjusting the respective flow rate It is.

The groundwater extraction means 50 is operated when the adsorption and purification function of the reaction pile 60 is temporarily stopped, and the pump pump 51 pumping groundwater to the ground through the cathode electrode 20 and the pump pump. Extraction water storage tank 30 for storing the contaminated ground water collected through the 51, the water treatment device 53 for purifying the contaminated ground water stored in the extraction water storage container 30, and in the water treatment device 53 It consists of a treated water tank (54) for storing the treated groundwater.

The water treatment apparatus 53 is divided into an on-site water treatment apparatus 53a for treating contaminated groundwater in the field, and an off-site water treatment apparatus 53b for external treatment and treated by the on-site water treatment apparatus 53a. The water is transferred to the treated water tank (54) and then moved to the water tank (41) of the washing water supply means (40) and used as the washing water injected into the anode electrode (10).

FIG. 3 is a layout view of installing a plurality of rows of the anode electrode, the cathode electrode, and the reaction file according to the present invention. And when it is difficult to operate the negative electrode of the cathode electrode rod 20 as a set is to be applied to the case of operating in the arrangement of a plurality of positive and negative electrodes.

The arrangement and arrangement of the positive and negative electrodes are interchangeable and installed in a straight, radial or lattice pattern. In more detail, the positive electrode 10 and the negative electrode 20 are sequentially disposed at predetermined intervals, and the reaction pile 60 is installed at both sides of the negative electrode 20.

4 is a conceptual diagram illustrating the installation of the anode electrode and the cathode electrode according to the present invention, by installing an insulation facility 39 around the upper end of the anode electrode 10 and the cathode electrode 20 so that most of the electricity flows only underground. In order to prevent electricity from flowing to the ground, the wire 38 is directly connected to the anode electrode 10 and the cathode electrode 20 at the bottom of the insulation facility 39 so that the current transmitted through the electric controller 37 is underground. To induce flow.

5 is a conceptual diagram showing the installation of the reaction file of the present invention, the reaction file 60 is to put the reactants therein to filter the contaminants in the contaminated groundwater as the passage of the contaminated groundwater or to react with the contaminants to harmless Do it.

Reactants introduced into the reaction pile may be a noble metal (iron, nickel, copper, aluminum, zinc, etc.), slag, zeolite, bentonite, waste tire, lime, rice husk, rice straw, loess, activated carbon, compost, sludge, graphite , Carbon, carbon, phosphate, etc. are a mixture of one or more of the substances are excellent in adsorption, reducing power, degrading power of contaminants. Meanwhile, the reactant in the reaction pile 60 is introduced into the anode electrode 10 and the cathode electrode 20, and the ground together with the anode electrode 10 and the cathode electrode 20 in the perforated hole in the ground. Can be installed on

In addition, after the anode electrode 10 and the cathode electrode 20 are inserted into the drilling holes, the reactant may be introduced into the anode electrode 10 and the cathode electrode 20 and installed in the ground.

The reaction pile 60 is formed in a columnar shape in the form of a circle, a square, a rectangle, or a wall of a narrow and long shape.

The present invention will be described in detail with reference to Examples.

Figure 6 is an application of the present invention applied to the contaminated ground where the sandy soil is present in the upper and viscous soil in the lower, Figure 7 is applied to the contaminated ground where the clay is present in the upper and sandy soil is present in the lower 8 is an application diagram of the present invention applied to a contaminated soil in which sandy soil is present in upper and lower portions and viscous soil is present in the center, and FIG. 9 is a contaminated soil in which sandy soil and viscous soil are present in layers. FIG. 10 is an application diagram of the present invention applied to a contaminated soil in which viscous earth pockets exist in sandy soil, and FIG. 11 is a present invention in which viscous earth pockets exist in a ground in which sandy soil and viscous soil layer each other. As an application to apply to the contaminated soil, the clay soil 300 in any one of the upper, middle and lower portion of the interior of the sandy soil 200, or the sandy soil 200 inside When the viscous earth pocket 301 is present, or when the sandy soil 200 and the viscous soil 300 have a mutual layered structure, or the sandy soil 200 and the viscous soil 300 have a mutual layered structure and the viscous clay pocket 301 In the presence of contaminated soil 100, the contaminants of the viscous soil 300 and the viscous soil pocket 301 are mainly due to the low permeability of the viscous soil 300. Due to the phenomenon and the diffusion phenomenon, the cathode electrode 10 moves from the anode electrode 10 to the cathode electrode 20. Since the contaminants in the sandy soil have high permeability of the sandy soil, advection due to soil washing, electric action and concentration difference, and electrophoretic phenomenon , And moves from the positive electrode 10 to the negative electrode 20 by the diffusion phenomenon, and the contaminants thus moved are adsorbed and removed from the reaction file while passing through the reaction file 60, but are harmless.

In addition, as shown in FIG. 12, even when soil 100 is pure sandy soil, pure viscous soil, sandy soil and viscous soil, the soils in the sandy soil and viscous soil are mixed by the soil washing and the difference in concentration. It is moved from the anode electrode 10 to the cathode electrode 20 by the advent phenomenon, the electroosmotic phenomenon, and the electrophoretic diffusion phenomenon, and is adsorbed or harmless while passing through the reaction pile 60.

FIG. 13 illustrates a method of installing the anode electrode and the cathode electrode electrode until the rock or impermeable layer is installed or not reached until the present invention is applied, and the reaction file is installed at the front, rear, left, and right sides of the cathode electrode. The electrode 10 and the cathode electrode 20 may be installed to reach the rock or impermeable layer 500 located below the soil ground 100 or may be installed until reaching this.

In addition, the reaction pile 60 may be installed on the front and rear and left and right sides of the cathode electrode 20, and the distance from the cathode electrode 20 is 0 m to 100 m. The 0m means that the reaction pile 60 and the cathode electrode rod 20 are installed at the same position, and the reaction material is inserted into the cathode electrode rod 20 to form the reaction pile 60.

Hereinafter will be described the operation of the present invention.

First, power is supplied from the power supply means 30 to the anode electrode 10 and the cathode electrode 20 inserted into the soil, and stored in the water tank 41 and the chemical solution 43 of the washing water supply means. By controlling the washing water and the chemical solution with the valve 45 and the flow gauge 46 and injecting it into the anode electrode 10, the groundwater and contaminants in the contaminated ground are electrolyzed due to the electrical action and concentration difference, electroosmotic phenomenon, and electricity. The movement phenomenon, the diffusion phenomenon, the soil washing, the electric action and the advection phenomenon due to the concentration difference is moved in the direction of the cathode electrode 20, the pollutant moved in the cathode direction is passed through the reaction file 60, Adsorbed by the reactants of the reaction pile 60 is removed or harmless.

In more detail, the low pH is formed by the electrolysis, so that the heavy metal adsorbed in the soil is easily desorbed and moved to the cathode, and the inorganic and organic substances present in the microcavity of the viscous soil by the electroosmotic phenomenon. It moves to the cathode, and the heavy metal having a positive charge is moved to the cathode by the electrophoretic phenomenon.

Preferably, the generating means for generating electricity in the power supply means 30 uses solar power electricity 33, and the generated electricity is supplied through the power supply device 35, and the direct current is generated by the AC / DC converter 36. By supplying a predetermined current to the anode electrode 10 and the cathode electrode 20 through the electrical controller 37, and also to inject the washing water and chemical solution into the anode electrode 10, wherein the washing water and chemical The solutions may be injected separately or in combination gravity and pressure.

On the other hand, when the pollutant purification function of the reaction pile 60 is temporarily stopped, the pump pump 51 connected to the cathode electrode rod 20 is operated to adjust the valve 45 and the flow gauge 46 to control the groundwater contamination to the ground. After extraction is stored in the extraction water storage container 52, the contaminated ground water stored in this way is purified by moving to the on-site water treatment device (53a) or off-site water treatment device (53b).

In addition, the contaminated ground water purified by the on-site water treatment device 53a is moved to the treated water tank 54 and stored.

In addition, the purified ground water stored in the treated water tank (54) is moved to the water tank (41) of the washing water supply means 40 to be used as a cleaning liquid injected into the anode electrode (10).

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

The effect of the present invention can be expected by the configuration and operation as described above is to generate an electric current supplied to the anode electrode and the cathode electrode using solar electricity, etc., so that unlimited natural resources can be used economically and unlimitedly, eco-friendly construction Lead the construction.

In addition to the cleaning power by soil washing method, it can be removed by accelerating the movement of contaminants in the contaminated ground through the electroosmotic power by the electric restoration technique, and contaminated not only in viscous and sandy soils, but also in mixed soils containing viscous and sandy soils. Can effectively remove material,

In addition, it is possible to effectively remove contaminants such as heavy metals, inorganic substances, and organic substances adsorbed or adsorbed in coarse gaps of cohesive soils and coarse gaps of clay soils by using electric and washing powers. By treating in the ground without extraction, it saves the cost of water treatment on the ground, and cleans and restores the contaminated ground in an environmentally friendly way because no pollutants are extracted to the ground.

In addition, by applying the electric restoration method, soil washing technique and reaction pile technique at the same site at the same time to eliminate the hassle of applying individually, it is a very useful invention that the construction period is reduced to reduce the construction cost.

Claims (10)

delete delete The anode electrode 10 and the cathode electrode 20 which are installed at predetermined intervals inside the soil ground 100 and the cathode electrode rod 20 are provided separately from the cathode electrode rod 20 on the cathode electrode 20 side and are the anode electrode rod 10. Reaction file 60 for adsorption and removal of contaminants in the contaminated groundwater moving to the cathode electrode rod 20 in the and the power supply means 30 for applying power to the cathode electrode rod 10 and the cathode electrode rod 20 And, through the water tank (41) and the chemical solution tank 43 to supply the washing water and the chemical solution to the positive electrode 10, and the ground water contamination through the negative electrode 20 In the purification, restoration device of the contaminated ground consisting of groundwater extraction means 50 for extracting and storing the ground to the ground, The power supply means 30 includes an electricity generating unit 31 for generating electricity, a power supply device 35 for supplying electricity generated by the electricity generating unit 31, and the power supply device 35. An AC / DC converter 36 connected to convert electricity into direct current, and adjusts the electricity converted by the AC / DC converter 36 by a predetermined required amount to supply power to the anode electrode 10 and the cathode electrode 20. Composed of an electric controller 37, The groundwater extraction means 50 includes a pump pump 51 for pumping the contaminated groundwater to the ground through the cathode electrode rod 20, and an extraction water reservoir 52 for storing the contaminated groundwater collected through the pump pump 51. ), A water treatment apparatus 53 for purifying the contaminated ground water stored in the extraction water storage tank 52, and a treated water tank 54 for storing the contaminated ground water purified by the water treatment apparatus 53. But An electric washing reaction file comprising connecting the treated water tank (54) and the water tank (41) of the washing water supply means (40) to supply the purified groundwater to the anode electrode (10) for reuse as washing water. Apparatus for the purification and restoration of contaminated soil mixed with sandy soil and viscous soil by the technique. delete delete The method of claim 3, wherein The anode electrode 10 and the cathode electrode 20 is a sandy soil and viscous soil by the electric washing reaction pile method, characterized in that one or more of the carbon material, graphite material, iron material, steel material, aluminum material, stainless steel material is mixed. Device for purification and restoration of mixed soils. The method of claim 3, wherein The insulation facility 39 is installed at the upper circumference of the anode electrode 10 and the cathode electrode 20 and the electricity supplied from the power supply means 30 is connected to the lower side of the insulation facility 39 to flow electricity only underground. Apparatus for purification and restoration of contaminated soil mixed with sandy soil and viscous soil by electric washing reaction pile technique. delete The method of claim 3, wherein The reaction pile 60 is installed within 0 ~ 100m in the front and rear and left and right of the cathode electrode rod 20, the shape of the electric washing reaction pile method characterized in that the one consisting of a circular, square, rectangular, wall-shaped. Apparatus for purification and restoration of contaminated soil mixed with sandy soils and viscous soils. The method according to claim 3 or 9, Inside the reaction pile 60, a mixture of one or more of a noble metal, slag, zeolite, bentonite, waste tire, lime, rice husk, rice straw, loess, activated carbon, compost, sludge, graphite, carbon, carbon, and phosphate is mixed. Apparatus for purifying and restoring contaminated ground in which sandy and viscous soils are mixed by an electric washing reaction pile technique.

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