KR20130049325A - Chemical injection apparatus with venturi nozzle and purification method of polluted soil using thereof - Google Patents

Abstract

The present invention relates to a chemical injection device having a double packer for chemical injection with a venturi nozzle and a method for purifying contaminated soil using the same, and more particularly, to a constant pressure through an engine power pump that is easy to transport and supply a power source. A chemical injection device equipped with a double packer for injecting a drug with a venturi nozzle, which is configured to discharge the injected medicine at high pressure through a venturi nozzle at a high pressure, and a method for purifying contaminated soil using the same. It is about.
According to the present invention, a double packer comprising a plurality of venturi nozzles installed between the upper and lower injection tube installed with a support tube connected to the air injector, the outer peripheral surface support tube of the injection tube and in communication with the inside of the injection tube; Venturi nozzle with double venturi nozzle, which is connected to the chemical injection hose connected to the upper part of the injection tube, is composed of an engine-powered pump that inhales the chemical from the chemical tank and injects the chemical into the injection pipe through the chemical injection hose. A first step of testing and drilling a chemical injection device equipped with a packer and a contaminated area to check the depth of contamination, the range of contamination, and Saturn; Drilling a contaminated soil to form a well; A third step of installing a chemical injection device in the well; Provided is a method of purifying contaminated soil using a chemical injection device having a double packer for injecting drugs with a venturi nozzle, comprising a fourth step of purifying contaminated soil by injecting a chemical into a double packer.

Description

Chemical injection apparatus with venturi nozzle and purification method of polluted soil using according to the present invention.

The present invention relates to a chemical injection device having a double packer for chemical injection with a venturi nozzle and a method for purifying contaminated soil using the same, and more particularly, to a constant pressure through an engine power pump that is easy to transport and supply a power source. Chemical injection device equipped with a double packer for injecting a drug with a venturi nozzle, which is configured to discharge the injected medicine at high pressure through the venturi nozzle at an instantaneous high pressure, and a method for purifying contaminated soil using the same. It is about.

In general, the method of purifying contaminated soil can be divided into in-situ treatment method to purify the soil without digging and ex-situ treatment method to excavate and purify the soil.

The underground treatment method of the above method is applied when the contaminated soil cannot be excavated due to the structure of the ground and the site conditions, and the soil vapor extraction method (SVE, Soil Vapor Extraction), which is a physical technology for processing by vacuum suction of volatile contaminant gas, Bioventing (BV), a biological technology that decomposes pollutants biologically by increasing the activity of microorganisms in the soil by forcibly injecting or extracting air into the ground, and a chemical technology that oxidizes pollutants by injecting powerful oxidants. Chemical Oxidation (CO) is an underground treatment method.

In the underground treatment method, after drilling a well in a contaminated soil, a chemical injection device is inserted into the well, and the chemical injection device injects chemicals, oxidants, and microorganisms into the contaminated soil to decompose contaminants. It is common.

In addition, the chemical injection device generally uses a centrifugal pump, an AOD pump, a screw type pump, etc., which use electricity as a power source to inject a chemical.

However, the above-described underground treatment method is economically poor in the case of low permeability and air permeability, even in the low-breathability or compacted soil, it is difficult to spray evenly.

However, the above-described conventional chemical injection device uses a centrifugal pump, AOD pump, screw type pump, etc. to inject the chemical into contaminated soil with low permeability or air permeability, but cannot withstand the constant earth pressure generated during the injection of the chemical. There was a problem that the maneuver was stopped.

That is, the underground treatment method, which is easier to apply than the ground treatment method, has a problem in that the time required for purifying contaminated soil is longer than that of the ground treatment method due to the problem of the above-mentioned auxiliary equipment.

In addition, as it uses centrifugal pumps, AOD pumps, and screw type pumps that use electricity as a power source, they cannot be used in areas where electricity is not supplied, and they are accompanied by auxiliary equipment such as air compressors and motors to operate the pumps. There was a problem that installation and movement was not easy.

Therefore, the present invention is injected through the venturi nozzle installed in the double packer by injecting the chemicals into the double packer connected to the engine power pump is easy to carry and install, easy to supply the power source to solve the above problems Provided with a chemical injection device having a double packer for injection of a drug with a venturi nozzle and a method for purifying contaminated soil using the same, so that the high-pressure drug is easily injected into the contaminated soil while expanding the gap formed in the inlet structure of the soil. There is a purpose.

The present invention has been invented to solve the above problems, the injection tube body is installed between the upper and lower support tube connected to the air injector, respectively, installed between the outer circumferential surface support tube of the injection tube and a plurality of communication with the inside of the injection tube A double packer composed of a venturi nozzle; Venturi nozzle with double venturi nozzle, which is connected to the chemical injection hose connected to the upper part of the injection tube, is composed of an engine-powered pump that inhales the chemical from the chemical tank and injects the chemical into the injection pipe through the chemical injection hose. A first step of testing and drilling a chemical injection device equipped with a packer and a contaminated area to check the depth of contamination, the range of contamination, and Saturn; Drilling a contaminated soil to form a well; A third step of installing a chemical injection device in the well; The present invention provides a method of purifying contaminated soil using a medicine injection device having a double packer for injection of a drug with a venturi nozzle, characterized in that the fourth step of purifying the contaminated soil by injecting a medicine into the double packer.

The present invention improves the water permeability of contaminated soil by expanding the gap of the grain structure by instantaneous high pressure injection of the chemical through the venturi nozzle, so that the pollutant can be efficiently cleaned, and the purchase price instead of the conventional pump Inexpensive, easy to install and transport by using an engine power pump that uses gasoline as a power source, ease the underground treatment method by mitigating the restrictions by region, and through venturi nozzle and engine power pump As the size of the chemical injection device becomes smaller, the installation and transportation is convenient, so that the underground treatment method can be easily applied to various regions.

1 is a state diagram showing a state in which an embodiment of the present invention is installed in the well.
Figure 2 is an enlarged view showing a state in which an embodiment of the present invention is installed in the well.

Hereinafter, described in detail with reference to the accompanying drawings, preferred embodiments of the present invention.

As shown in FIG. 1, the chemical injection device 100 having a double packer for chemical injection with the venturi nozzle of the present invention is provided with a support tube 2 connected to an air injector 1 at an upper side and a lower side, respectively. A double packer installed between the injection tube 3 and the support tube 2 of the outer circumferential surface of the injection tube 3 and composed of a plurality of venturi nozzles 4 communicating with the inside of the injection tube 3; An engine power pump (6) connected to a chemical injection hose (5) connected to an upper end of the injection pipe (3) to inhale the medicine from the chemical tank and inject the medicine into the injection pipe (3) through the chemical injection hose (5). It consists of.

The engine power pump 6 operates through a power source such as gasoline.

Between the chemical tank and the engine power pump 6 is provided a screen to block the inflow of foreign matter.

The engine power pump 6 is provided with a regulator, it is possible to adjust the injection pressure of the chemical through the double packer.

Reference numeral H in the drawings is a well formed by drilling the ground.

The present invention configured as described above is a device for purifying contaminants by drilling contaminated soil to a predetermined depth to form the wells (H), and then injecting drugs into the wells (H).

In particular, the present invention uses the engine power pump 6, which is easy to move, install, and supply a power source, and expands the gap of the inlet structure by using the venturi nozzle 4 which instantaneously increases the injection pressure of the chemical. By effectively injecting it, there is a feature that can easily perform the underground treatment method.

The above-described features will be described in detail the process of the underground treatment method through the chemical injection device 100 having a double packer for chemical injection with the venturi nozzle of the present invention.

The first step is to test and test the contaminated area to determine the depth of contamination, the extent of contamination, and Saturn.

This is to reduce the consumption of chemicals and to reduce the cost of purification of chemicals by injecting the chemicals intensively at the contaminated spot or the high concentration spot before determining the exact depth of contamination, range, and soil.

The second step is to drill the contaminated soil to form the well (H).

This second stage is a very important task. If the depth of well is deeper than the depth of contamination investigated through the first stage, the consumption of materials and chemicals increases, and the depth of well is shallower than the depth of contamination. Because drilling makes it difficult to effectively clean up contaminated soil.

The third step is to install the drug injection device 100 in the well (H).

First, the engine power pump 6 constituting the chemical injection device 100 is close to the upper end of the well (H).

The engine power pump 6 is cheaper than the conventional centrifugal pump, AOD pump, screw type pump, etc., does not use electricity as a power source, and the mobility is increased because no additional equipment for operating the pump is required. Can be installed in various areas.

Next, the double packer is inserted into the well (H) to lower the depth of contamination.

Then, the air injector 1 is operated to expand two support tubes 2 installed in the injection tube 3 of the double packer shown in FIG. 2, and then the support tubes 2 are formed on the inner circumferential surface of the well H. The pressure is fixed to complete the installation of the drug injection device 100 as shown in FIG.

Here, the support tube 2 supports the upper side and the lower side of the injection tube 3, and during the injection of the drug, the injection tube 3 is maintained firmly so that the injection of the drug into the contaminated soil efficiently.

Finally, the fourth step is to clean the contaminated soil by injecting drugs into the double packer.

At this time, the engine power pump 6 injects the medicine into the injection pipe (3) of the double packer through the chemical injection hose (5) by inhaling the medicine in the lift of 20kg / ㎥ in the chemical tank.

Accordingly, the chemical is discharged to the contaminated soil at a pressure of 20 kg / m 3 through the plurality of venturi nozzles 4 installed in the injection pipe 3, and the chemical discharged at the pressure expands the gap formed in the grain structure of the soil. .

Therefore, the permeability of the contaminated soil is improved, so that it is possible to easily purify even the parts which are difficult to purify.

Here, the injection pipe 3 is generally used a lot of corrosion resistant stainless steel.

In addition, the venturi nozzle (4) instantaneously creates a high pressure of the drug of 20kg / ㎥ injected through the engine power pump (6) to increase the cracks in the compacted soil to contact the pollutants adsorbed on the soil particles and the purification chemicals. It improves the efficiency of underground treatment method by making it smooth.

The chemical injection device 100 having a double packer for chemical injection with the venturi nozzle of the present invention configured as described above and a method for purifying contaminated soil using the same are sprayed at a high pressure through the venturi nozzle 4 at a high pressure. As the gap expands, the permeability of the contaminated soil is improved, which can effectively purify the contaminants.

In addition, the purchase price is cheaper than the conventional pump, and the engine power pump 6 using gasoline or the like as a power source is convenient for installation and transportation, and the restriction of the region is alleviated to facilitate the underground treatment method. Can be done.

In addition, as the size of the chemical injection device 100 decreases through the venturi nozzle 4 and the engine power pump 6, the underground treatment method can be easily applied to various regions.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and in the technical field to which the present invention pertains that substitutions, modifications, and conversions can be made without departing from the spirit of the present invention. It will be evident to those who have knowledge of.

1: air injector 2: support tube
3: injection tube 4: venturi nozzle
5: Chemical injection hose 6: Engine power pump
100: chemical injection device
H: Well

Claims (2)

It is installed between the injection tube 3 and the outer peripheral surface support tube 2 of the injection tube 3 and the support tube 2 connected to the air injector 1, respectively, on the upper side and the lower side, and communicate with the inside of the injection tube 3. A double packer composed of a plurality of venturi nozzles 4; An engine power pump (6) connected to a chemical injection hose (5) connected to an upper end of the injection pipe (3) to inhale the medicine from the chemical tank and inject the medicine into the injection pipe (3) through the chemical injection hose (5). Drug injection device having a double packer for drug injection with a venturi nozzle is characterized in that consisting of.
A first step of testing the contaminated area to check the depth of contamination, the extent of contamination, and Saturn; Drilling a contaminated soil to form a well (H); A third step of installing the medicine injection device 100 in the well; A fourth step of purifying contaminated soil by injecting a chemical into a double packer. A method of purifying contaminated soil using a chemical injection device having a double packer for chemical injection with a venturi nozzle.

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