KR101671755B1 - In-situ remediation system of contaminants in subsurface by soil flushing and extraction - Google Patents

Abstract

The present invention relates to an underground purification system by extracting and washing an underground pollutant from the soil and, more specifically, relates to an underground purification system by extracting and washing an underground pollutant from the soil, which inserts washing agent-containing water to increase the pollutant solubility through a tube well in a soil pore, thereby detaching the pollutant adsorbed to the soil, extracting the same on the ground, and purifying and treating the same. The purification system for extracting and washing the soil has a simple structure, and is an effective and economic system.

Description

Technical Field [0001] The present invention relates to an in-situ remediation system for soil flushing and extraction,

The present invention relates to a groundwater purification system for soil cleaning and extraction of soil pollutants, and more particularly, to a soil purification system for soil pollutants which is adsorbed on soil by injecting water containing a cleaning agent The present invention relates to an underground purification system for soil cleaning and extraction of an underground pollutant that is desorbed and extracted into the ground and purified.

In general, unlike aquatic or atmospheric soils, the composition is complicated and the structure is varied, so that it is not technically easy to grasp the distribution of pollutants introduced into the soil and the temporal change of the form, and the change of pollution state is largely due to physical, chemical, .

Therefore, the purification technology in the contaminated site has been developed in various forms and applied to the site. The method of treating contaminated soil is largely divided into on-site treatment of contaminated soil in contaminated area and transportation of contaminated soil to remote site The field treatment can be classified as a method of injecting a treatment agent into a contaminated area or a type of facility that induces a chemical reaction such as a permeable reaction wall, A method of collecting the soil and purifying it through a treatment facility such as a soil washing facility is widely used.

Prior art related to the cleaning of contaminated soil is disclosed in Korean Patent No. 10-1195399, which comprises a plurality of vertical drainage members including a core and a filter composed of a nonwoven fabric surrounding the core and inserted into the contaminated ground, And a vacuum blower connected to the vertical drainage material and sucking contaminants from the vertical drainage material, wherein the core has air and contaminants on the surfaces thereof, A plurality of embossings are formed so as to be movable in the downward direction and the left and right direction so as to prevent a lateral load acting on the filter and an obstruction of the nonwoven fabric and the vacuum blower is provided with a vacuum line constituted by each vertical drainage member and a lock valve And the infusion pump is connected through an infusion line in which the respective vertical drainage and lock valves are connected Wherein each of the lock valves is electrically connected to a control unit, and each of the vertical drainage materials is selectively connected to the vacuum blower or the injection pump according to a control signal of the control unit, so that each vertical drainage material is injected into the ground And the drainage agent or each vertical drainage agent is selectively switched to an extraction drainage agent for discharging contaminants to the outside. However, the above-mentioned technology has a problem in that a filter having an embossed filter is provided The installed vertical drainage must be installed separately, which causes disadvantages such as an increase in installation cost and complication of the system structure.

Korean Patent Registration No. 10-1120682 discloses a rotary drilling machine for spraying decontamination chemicals and water in a water tank into a soil contaminated with high pressure and a drainage and a drainage pump for collecting the treated water and a high pressure pump and a drainage pump The controller controls the high-pressure pump and the drain pump in accordance with the result of the determination of the abnormality of the marine pump, thereby preventing the secondary pollution of pollutant diffusion along the surface of the ground, A high-pressure cleaning system for a contaminated soil and a driving method thereof are known, which are capable of efficiently recovering treated water to be jetted, but the above-mentioned technique has a problem in that a rotary perforator for spraying water into a soil contaminated with high pressure needs to be installed separately there was.

Korean Patent Registration No. 10-0977151 discloses a site treatment method for cleaning contaminated soil by injecting and recovering a cleaning liquid into the ground. The site treatment method includes a vertical excavation of the ground adjacent to the contaminated soil and a foundation construction for forming the excavation base 50 An upper pipe propelling step S20 for press fitting the casing 60 into the contaminated soil direction from the constructed excavation base 50 and excavating the inside soil of the casing 60 and the upper pipe propelling step S20 for excavating the inside soil of the casing 60, A lower tube is pushed into the lower part of the contaminated soil distribution ground from the casing 60 and excavated from the inside of the casing 60 while a predetermined inclination is formed from the tip of the casing 60 toward the excavation base 50 In the field cleaning method of contaminated soil using the tube propulsion including the step S40, the permeable material is filled in the casing 60 penetrated through the upper pipe propulsion step S20, and the casing 60 is excavated Inside the base 50 (S30) of forming an upper inclusion body (30) by drawing the upper inclusion body (30); Forming a lower vessel body 40 by filling the permeable material inside the casing 60 penetrated through the lower tube propulsion step S40 and drawing the casing 60 inside the excavation base 50 to form the lower vessel body 40 (S50). However, there is a problem in that the method can not be utilized because of the inconvenience of pressing the casing and installing the permeable material therein.

Also, in Korean Patent No. 10-0395691, water is continuously sprayed on the contaminated soil to collect the oil and the like into a fixed collection tank at a predetermined depth, then pumped as a recovery pump, transferred to a flow control tank, A chemical treatment tank, and an ozone oxidation treatment unit to sequentially perform physical, chemical, and biological treatments, as well as recycling the purified water to be sprayed. , There is a problem that water must be continuously sprayed on the contaminated soil.

Korean Registered Patent No. 10-1195399 (registered on October 23, 2012) Korean Registered Patent No. 10-1120682 (registered on February 20, 2012) Korean Patent No. 10-0977151 (registered on August 16, 2010) Korean Registered Patent No. 10-0395691 (registered on August 12, 2003)

In order to solve the above problems, the present invention is to solve the above problems by injecting water containing a detergent for increasing the solubility of underground pollutants into a soil pore through a gutter to desorb the pollutant adsorbed on the soil, And to provide an underground purification system by soil cleaning and extraction of the underground pollutants.

In order to solve the above-mentioned problems, the present invention provides a groundwater purification system for soil cleaning and extraction of soil pollutants, comprising: a groundwater pipe or an industrial water pipe for supplying water for dissolving a detergent; A cleaning agent dissolving tank for homogeneously mixing and dissolving a cleaning agent injected from the groundwater or industrial water injected from the groundwater well or industrial water pipe and the cleaning agent injected from the cleaning agent injecting apparatus into the cleaning agent dissolving tank, A solution cleaning agent pouring pump for pouring the dissolution detergent from the dissolving detergent reservoir and injecting the dissolution detergent into the injection well; and a dissolution cleaner injected from the dissolution detergent injection pump, Spreading to the ground Minutes to dissolve the detergent injection device that is configured to include a plurality of injection wells that are connected to the detergent dissolving engine; And a contaminated groundwater extraction pump for pumping and extracting the contaminated groundwater from the plurality of contaminated groundwater collecting chambers, wherein the contaminated groundwater is extracted from the plurality of contaminated groundwater collecting chambers to collect contaminated groundwater containing desorbed contaminants adsorbed on the soil by the injected dissolution cleaner, And a contaminated groundwater transfer pump for transferring the contaminated groundwater from the relay water collecting tank to the contaminated groundwater purification apparatus, wherein the contaminated groundwater is collected through the branch pipe, And a groundwater purification system comprising soil cleaning and extraction of an underground pollutant material comprising the contaminated groundwater extraction device.

And an integrating water meter is further provided between the dissolution cleaner injection pump and the plurality of dissolution cleaner injection chambers.

And an accumulation water meter is further provided between the plurality of contaminated ground water extraction wells and the relay collecting tank.

The solid state cleaning agent injecting apparatus includes a cylindrical housing, a screw shaft and a screw blade rotatably installed in the housing, a solid cleaning agent storage hopper installed at an upper portion of one end of the housing, and an injection chute installed at the lower end of the housing As a solution to the problem.

The liquid detergent injection device comprises a hydrogen peroxide and a surfactant mixture tank and an injection pump.

The soil cleaning and extraction system for soil pollutants according to the present invention is characterized in that the water containing the detergent for increasing the solubility of the pollutants is injected into the soil pores through the gutters to desorb the contaminants adsorbed on the soil, Extraction, and purification treatment, which is a simple, most effective and economical purification system.

1 is a conceptual diagram of an underground purification system by soil washing and extraction of the present invention
Fig. 2 is a flowchart of the soil remediation system process by soil washing and extraction of the present invention
FIG. 3 is a schematic view showing the constitution of the apparatus for injecting the cleaning agent of the present invention
Fig. 4 is a schematic diagram of the apparatus for extracting contaminated ground water according to the present invention
Fig. 5 is a schematic view of the solid-

The present invention relates to a groundwater purification system for soil cleaning and extraction of soil contaminants, comprising: a groundwater well or an industrial water pipe for supplying water for dissolving detergent; a solid or liquid detergent injector for increasing solubility of underground pollutants; A cleaning agent dissolving tank for uniformly mixing and dissolving a groundwater or industrial water injected from an underground water well or an industrial water pipe and a detergent injected from the detergent injecting apparatus, and a dissolution cleaning agent homogeneously stirred and mixed in the detergent solubilization tank, A dissolving detergent injection pump for injecting the dissolving detergent into the injection conduit by pumping the dissolving detergent from the dissolving detergent reservoir; and a solenoid injector for injecting the dissolving detergent into the injection conduit, A suit to Of dissolved detergent dissolved detergent injection device that is configured to include the injection wells; And a contaminated groundwater extraction pump for pumping and extracting the contaminated groundwater from the plurality of contaminated groundwater collecting chambers, wherein the contaminated groundwater is extracted from the plurality of contaminated groundwater collecting chambers to collect contaminated groundwater containing desorbed contaminants adsorbed on the soil by the injected dissolution cleaner, And a contaminated groundwater transfer pump for transferring the contaminated groundwater from the relay water collecting tank to the contaminated groundwater purification apparatus, wherein the contaminated groundwater is collected through the branch pipe, And a groundwater purification system comprising soil cleaning and extraction of an underground pollutant material comprising a contaminated groundwater extraction device comprising the same.

And an integrating water meter is further provided between the dissolution cleaner injection pump and the plurality of dissolution cleaner injection chambers.

And a cumulative water meter is further provided between the plurality of contaminated ground water extracts and the relay collecting tank.

The solid state cleaning agent injecting apparatus includes a cylindrical housing, a screw shaft and a screw blade rotatably installed in the housing, a solid cleaning agent storage hopper installed at an upper portion of one end of the housing, and an injection chute installed at the lower end of the housing As a feature of the technical construction.

Wherein the liquid detergent injection device comprises a hydrogen peroxide and a surfactant mixture tank and an injection pump.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the illustrative embodiments set forth herein.

1 to FIG. 2, the soil cleaning and extraction system for soil pollutants according to the present invention is characterized in that water containing a detergent for increasing the solubility of pollutants is injected into a soil pore through a tunnel So that contaminants adsorbed on the soil are desorbed and extracted to the ground to be purified.

More specifically, referring to FIG. 3, the present invention relates to an apparatus for supplying detergent water for use in an underground water or industrial water pipe, a device for injecting solid or liquid detergent for increasing solubility of underground pollutants, A cleaning agent dissolving tank for uniformly stirring and mixing the groundwater or industrial water injected from the piping and the cleaning agent injected from the cleaning agent injecting apparatus, and a dissolution cleaner storage tank for transporting and storing the dissolution cleaning agent homogeneously stirred and mixed in the cleaning agent dissolver by a transfer pump A dissolved detergent infusion pump for pumping the dissolved detergent from the dissolved detergent reservoir to inject the dissolved detergent into the infusion well; and a plurality of infusion pumps connected to the branch for diffusing the dissolved detergent injected from the dissolved detergent infusion pump into the ground Including dissolved detergent injection well W is constituted comprising a detergent injection device that is dissolved.

At this time, the detergent may be a solid detergent or a liquid detergent. Preferably, sodium bicarbonate is used as the solid detergent, and hydrogen peroxide and surfactant are used as the liquid detergent.

Particularly, the solid-state cleaning agent injecting apparatus comprises a cylindrical housing, a screw shaft and a screw blade rotatably installed in the housing, a solid cleaning agent storage hopper installed at an upper portion of one end of the housing, and an injection chute provided below the other end of the housing .

5, the apparatus for injecting a solid cleaning agent comprises a cylindrical housing 1, a screw shaft 2 and a screw blade 3 rotatably installed in the housing, A detergent storage hopper 4 installed, and an injection chute 5 provided below the other end of the housing.

Further, although not shown, the liquid detergent injection device comprises a hydrogen peroxide and a surfactant mixture tank and an injection pump.

At this time, it is preferable that the solid and liquid detergent injecting apparatuses have injection capacity of 0.1 m < 3 > / hr or more from the viewpoint of operating efficiency and purification efficiency of the equipment.

In the apparatus for injecting dissolved detergent, an integrating water meter may be further provided between the dissolved detergent injection pump and the plurality of dissolved detergent solution injection counters.

Referring to FIG. 4, the present invention includes a plurality of contaminated groundwater extracts for collecting contaminated groundwater containing desorbed contaminants adsorbed on the soil by injected dissolution cleaner, A contaminated groundwater extraction pump for pumping and extracting the contaminated ground water from the groundwater collection tank, a plurality of contaminated ground water extraction tanks, a relay collecting tank for collecting the contaminated groundwater extracted from the extraction pump through a branch pipe, And a contaminated ground water transfer pump for transferring the contaminated ground water to the processing apparatus.

At this time, an integrated water meter may be further included between the plurality of contaminated ground water extracts and the relay collecting tank.

Next, referring to FIGS. 3 and 4, the operation procedure of the underground purification system by the soil cleaning and extraction of the underground pollutants of the present invention will be described. First, the underground water well or industrial water pipeline valve is opened After injecting industrial water into the cleansing agent dissolution tank, the agitator is operated, then the detergent injection device is operated to administer the cleansing agent to the cleansing agent dissolution bath and stir to sufficiently dissolve the cleansing agent.

Next, the dissolving cleaning agent homogeneously stirred and mixed in the cleaning agent dissolving tank is transferred by a transfer pump and stored in the dissolving detergent storage tank. At the same time, the dispersion is homogeneously stirred to adjust the concentration of the dissolving detergent by connecting with the industrial water pipe, Activate the connected dissolved detergent infusion pump and open the infusion pump discharge valve and the infusion branching valve to stop the infusion pump after completing injection of the intended dissolved cleaning agent.

Meanwhile, when the contaminated groundwater containing desorbed contaminants adsorbed on the soil by the injected dissolution cleaner is collected in a plurality of contaminated groundwater extracting chambers, the contaminated groundwater extracting pump is operated to pump the contaminated groundwater to the relay collecting tank, When the water level becomes higher than the water level, the contaminated groundwater transfer pump is operated to transfer the contaminated ground water from the relay water collecting tank to the contaminated groundwater purification apparatus.

The foregoing description is merely illustrative of the technical idea of the present invention and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the drawings disclosed in the present invention are not intended to limit the scope of the present invention and are not intended to limit the scope of the present invention. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

Claims (5)

A groundwater purification system for soil cleaning and extraction of soil contaminants, comprising: a groundwater well or industrial water pipe for supplying dissolution water for detergent; a solid or liquid detergent injector for increasing the solubility of groundwater pollutants; A cleaning agent dissolving tank for uniformly stirring and mixing the groundwater or industrial water injected from the industrial water pipe and the cleaning agent injected from the detergent injecting apparatus, and a dissolution tank for transferring and storing the dissolution cleaning agent homogeneously stirred and mixed in the cleaning agent dissolving tank by a transfer pump A detergent reservoir, a dissolved detergent injection pump for pumping the dissolved detergent from the dissolved detergent reservoir and injecting the dissolved detergent into the injection conduit, and a means for connecting the dissolved detergent injected from the dissolved detergent injection pump to the sub- Multiple dissolution Soluble detergent injection device which comprises a tablet injection wells; And a contaminated groundwater extraction pump for pumping and extracting the contaminated groundwater from the plurality of contaminated groundwater collecting chambers, wherein the contaminated groundwater is extracted from the plurality of contaminated groundwater collecting chambers to collect contaminated groundwater containing desorbed contaminants adsorbed on the soil by the injected dissolution cleaner, And a contaminated groundwater transfer pump for transferring the contaminated groundwater from the relay water collecting tank to the contaminated groundwater purification apparatus, wherein the contaminated groundwater is collected through the branch pipe, And a contaminated groundwater extracting device,
The solid state cleaning agent injecting apparatus includes a cylindrical housing, a screw shaft and a screw blade rotatably installed in the housing, a solid cleaning agent storage hopper installed at an upper portion of one end of the housing, and an injection chute installed at the lower end of the housing Respectively,
Wherein the liquid detergent injector comprises a hydrogen peroxide and a surfactant mixture tank and an infusion pump. delete delete delete delete

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