KR102099047B1 - Compact type remediation system of complex contaminated soils - Google Patents

Abstract

According to one aspect of the present invention, the present invention relates to a compact complex contaminated soil purification system which enables efficient management operation. According to an embodiment of the present invention, the compact complex contaminated soil purification system comprises a contaminated soil transport conveyor, a mix washer, a wet vibration sorting device, a clean gravel discharge conveyor, a first hydro cyclone, a drum-type heavy metal elution tank, and a vibration washing dewatering device, a clean sand discharge conveyor, a second hydro cyclone, a sedimentation tank, a precipitation tank, a concentration tank, and a filter press.

Description

COMPACT TYPE REMEDIATION SYSTEM OF COMPLEX CONTAMINATED SOILS}

The present invention relates to a compact complex pollution soil purification system, and more specifically, by placing components connected to each other in an optimal position adjacent to each other, minimizing the site installation site to enable efficient management and operation, while contaminating the complex with oil and heavy metals. It relates to a compact complex pollution soil purification system capable of simultaneous treatment of soil.

In general, environmental pollution can be classified into air pollution, water pollution, and soil pollution. Among them, especially, soil pollution can be a very serious threat to food production, and it causes pollution of drinking water sources through surface water and groundwater pollution. Contaminated soil needs to be cleaned up early.

In recent years, soil pollution occurring in Korea is mainly caused by unauthorized landfill or leakage of liquid waste, and is also caused by underground diffusion of ground deposits left in the process of industrial activities for a long time, and the soil contaminated by these occurrence factors is It is caused by several kinds of chemical species rather than a single species of compound, and typical complex pollution occurs in most industrial areas in the form of oil and heavy metals.

Methods for restoring recently contaminated soil can be classified into physical and chemical methods such as soil washing, incineration, solidification, stabilization and solvent extraction, and biological methods such as soil cultivation, composting, bio venting, and plant restoration, Among these methods, the soil washing method is relatively easy and can quickly restore contaminated soil.

The method of cleaning contaminated soil is a technique of reducing the surface tension of harmful organic contaminants bound to soil particles or converting heavy metals into liquid phases using appropriate cleaning agents to separate and treat them from soil particles. It has the advantage of being able to be removed while being applied regardless of the type of contaminant.

In the above, the soil washing method is divided into an In-situ method and an Ex-situ method, and the In-situ method does not excavate contaminated soil, but it does not excavate contaminated soil. It is a soil flushing method that installs a volatile material treatment facility on a contaminated site and circulates the cleaning agent in the contaminated soil to be treated to directly wash the contaminated soil (Soil Flushing). As there is no shortcoming, Ex-situ method is mainly applied for soil washing.

Ex-situ method analyzes the distribution of contaminants in the soil and the physical / chemical properties of the soil, excavates the contaminated soil in the range to be treated, and then uses the appropriate cleaning agent to clean the contaminated soil in the place with the washing device. As a washing method, it is used as a recently generalized soil washing method.

As a technology to recover soil by removing and contaminating various contaminants including oil and heavy metal attached to contaminated soil by selecting and washing contaminated soil in multiple stages using the conventional soil washing method, domestic patent No. 10-0534067 Soil washing methods and devices for screening) have been proposed.

In the prior art, the soil is sorted through a dry sorting step and a high-pressure sprinkling sorting step, and then washed in a primary washing tank and separated and discharged into floating soil containing a large amount of contaminants and sedimentary soil containing a small amount of contaminants. At the same time, the separated sedimentary soil is washed in the secondary washing tank and discharged separately to the fine soil and granulated soil to dehydrate the granulated soil and restore it to the restored soil, and the fine soil is precipitated, aggregated and dehydrated together with the suspended soil discharged from the primary washing tank It is a technology to make polluted sludge for disposal through the process and neutralize and recycle the polluted cleaner.

In the prior art, after selecting the soil particles having a large particle size in a dry sorting machine and a high-pressure sprinkler sorting machine, a washing process is performed in the primary and secondary washing tanks, and then the fine soil and floating soil generated in the washing process are discarded. Since it is made of waste polluted sludge and disposed, it is not only expensive to treat waste, but also causes second environmental pollution due to waste. In particular, there are problems in that pollutants adsorbed on particulate soil cannot be effectively removed.

In addition, when the metal component is very strongly combined with the soil particles only by the conventional soil washing technology, when the density and surface characteristics of the soil containing the metal component and the soil not containing the metal are not clearly distinguished, the cleaning is due to various chemical properties of the heavy metal When the technology is difficult to apply, when heavy metals are combined with soil particles of various sizes, in the case of soil with a content of silt / clay exceeding 30-50% or a high humic content, organic matter with high viscosity is applied to the soil. When included, there was a problem that it was difficult to effectively remove the contaminants adsorbed on the soil.

In particular, the conventional soil washing technology has a feature of low purification efficiency when the soil to be applied contains a large amount of fine soil, which is due to the characteristic of fine soil having a high specific surface area and a large amount of adsorption site. Compared to the case, organic and inorganic contaminants are more strongly adsorbed, so it is difficult to desorb through the purification method, so the installation cost is high in terms of economics, eco-friendliness, workability, and safety of the purification system, and there are many site installation sites for the purification system. There is a problem that must be secured.

One aspect of the present invention is to provide a compact complex contaminated soil purification system capable of simultaneous treatment of soil contaminated with oil and heavy metals while minimizing site installation sites to enable efficient management and operation.

Another aspect of the present invention is to provide a compact complex polluted soil purification system that improves the working environment by minimizing the moving distance of workers while installing components linked to each other in an optimal position.

Another aspect of the present invention, because the amount of the treated water falling by the drum-type heavy metal elution tank comprising a first rising member for spraying intensively in a narrow range and a second rising member for spraying by dispersing in a wide range increases the amount of contamination It is to provide a compact complex soil purification system that can improve the heavy metal dissolution effect.

Another aspect of the present invention, by forming the first rising member and the second rising member of a specific structure in an integral structure on the inner and outer surfaces of the drum housing, it is possible to efficiently implement the compact structure by using the drum-type heavy metal elution tank to improve space utilization. It is to provide a compact complex soil purification system to be improved.

A compact complex polluted soil purification system according to an embodiment of the present invention is disposed along a first direction in which contaminated soil is supplied and dehydrated cake is discharged, so that the contaminated soil is transported in a quantitative manner; and, A mix washer that sprays and washes washing water while transferring the contaminated soil that is disposed on one end of the transport conveyor in the first direction in an axial rotation manner; and, a soil that is less than a certain particle size in the contaminated soil that is disposed and supplied at one end of the mix washer Is a wet vibration sorting device that allows soil to pass over a certain particle size and does not pass, and generates clean gravel; and is disposed along a second direction that crosses the soil transfer conveyor and discharges clean gravel, so that the central sector and the first sector of the system. Clean gravel discharge conveyor that serves as a standard for defining the surrounding sector; and is arranged in the central sector of the system. A first hydrocyclone that performs particle size separation on the sediment introduced from the vibration type separator to wetly discharge particles smaller than the first reference particle size to the 1a outlet and particles larger than the first reference particle size to the 1b outlet; And, the elution tank is disposed adjacent to the first hydrocyclone and the treatment water for eluting heavy metals from particles larger than the first reference particle size discharged from the 1b discharge port of the first hydrocyclone, and installed inside the elution tank A drum-type heavy metal elution tank including a rotating drum that causes heavy metal chemically bound to the contaminated soil to elute by using the falling force of the contaminated soil by rotating, and a rotating device that floats and rotates the rotating drum inside the elution tank; and, It is arranged adjacent to the drum-type heavy metal elution tank to dehydrate moisture from the particles discharged from the drum-type heavy metal elution tank to clean it. Vibration washing dehydration device for generating sand; and a standard for defining a central sector and a second peripheral sector of the system by being disposed along a second direction in which clean sand is discharged while being intersected with a contaminated soil transport conveyor so as to be parallel to a clean gravel discharge conveyor. A clean sand discharge conveyor that is disposed in the second peripheral sector and performs particle size separation wetly on the soil that has undergone the vibration washing dehydration device to discharge particles smaller than the second reference particle size to the 2a discharge port, and to A second hydro cyclone for discharging large particles to the second b outlet; and, disposed in the second peripheral sector, receives fine soil from the first a outlet of the first hydro cyclone and the second a outlet of the second hydro cyclone, so that the fine soil is bottomed A sedimentation tank that allows gravity to sediment; A sedimentation tank to be settled to the bottom using Arthur flocculant; and a concentration tank disposed in the central sector to be connected to the discharge ends of the sedimentation tank and sedimentation tank to store sludge discharged to the sedimentation tank and sedimentation tank and generate gravity-separated concentrated sludge; And a filter press disposed in the first peripheral sector to discharge the concentrated sludge discharged from the concentration tank to discharge water to generate the concentrated sludge into a dehydrated cake and discharge it in a first direction.

In addition, the compact complex soil soil purification system is disposed adjacent to the sedimentation tank and is disposed in the central sector, adjacent to the sedimentation tank, and flowing into the sedimentation tank to introduce bubbles from the sedimentation tank to separate the oil contained in the bubble; A process water storage tank arranged in the central sector to supply water to the oil washer separation tank and supplying water to a mix washer, a wet vibration sorting device, a drum-type heavy metal elution tank, and a vibration washing dewatering device; and It characterized in that it comprises; a supplemental water storage tank for replenishing the water so that the water in the process water storage tank to a certain level.

In addition, the rotating drum, a cylindrical inlet drum of the first size to which the micro soil to be eluted flows; And, a plurality of through-holes are formed on the outer circumferential surface so that the fine soil introduced through the inlet drum floats and rotates to dissolve heavy metals from the micro soil. And a second sized cylindrical drum housing larger than a first size in which a spiral first rotary feeder blade is formed on the inner circumferential surface; and a second helical surface on the inner circumferential surface so that micro earth eluted from the drum housing is discharged to the outside. It characterized in that it comprises; a cylindrical outlet drum of the first size on which the rotary transfer blade is formed.

In addition, the drum-type heavy metal elution tank is formed to protrude on the inner surface of the drum housing, and when the drum housing rotates, it pulls up contaminated soil and drops it through its outlet, and the inner surface protrusion that processes water therein. It is formed on the outer surface of the drum housing at a position corresponding to the inner surface protrusion so that it can be supplied to the inside. As the drum housing is rotated, the treated water inside the elution tank is pulled upward, and the function of intensively falling into a narrow range through the exit of the inner surface protrusion A plurality of first rising member having an outer surface storage to perform; And, formed so as to protrude on the outer surface of the drum housing is located between the first rising member while the drum housing is rotated to pull the treated water inside the elution tank upward Raise and spread over a wide range through the drum housing to perform the function of dropping. It characterized in that it comprises a; plurality of second raised member.

In addition, the second rising member, the outer surface protrusion formed to protrude in the radial direction from the outer surface of the drum housing, the first bent portion formed extending in one direction from the outer surface protrusion, and the other side direction opposite to the first bent portion from the outer surface protrusion It characterized in that it comprises a second bent portion formed to extend.

In addition, the second lifting member is characterized in that it is formed to extend in a spiral along the longitudinal direction of the drum housing.

In addition, the second rising member is characterized in that it is disposed between the first rising member.

In addition, the first rising member is a position corresponding to the first inner surface protrusion to be able to supply the inside of the first inner surface protrusion and the first inner surface protrusion formed to be inclined in one direction with respect to the longitudinal direction of the drum housing. It is formed on the outer surface of the drum housing, and as the drum housing is rotated, the treatment water inside the elution tank is pulled upwards, and the first outer surface storage unit performs a function of intensively falling to a narrow range through the outlet of the first inner surface protrusion. 1a a rising member; and a second inner surface protrusion that extends integrally from the first inner surface protrusion and is formed to be inclined in the opposite direction, and corresponds to a second inner surface protrusion to supply the treated water therein into the second inner surface protrusion. It is formed on the outer surface of the drum housing at the position and as the drum housing is rotated, the treated water inside the elution tank is pulled upward to protrude the second inner surface. It characterized in that it comprises a; 1b of the rising member having a second outer surface for storage via the outlet perform the function of intensive fall into a narrow range.

In addition, the first rising member, the drum in a position corresponding to the first inner surface protrusion so as to supply the first inner surface protrusion made of a horizontal member with respect to the longitudinal direction of the drum housing, and the treated water therein into the first inner surface protrusion. It is formed on the outer surface of the housing and the drum housing is rotated to pull the treated water inside the elution tank upward, and a first outer surface storage unit for performing a function of intensively falling in a narrow range through the exit of the first inner surface protrusion is provided. A rising member; and a second inner surface, which is disposed discontinuously with the first inner surface protrusion and is made of an inclined member with respect to the longitudinal direction of the drum housing, and a second inner surface to supply the treated water therein into the second inner surface protrusion. It is formed on the outer surface of the drum housing at a position corresponding to the protrusion, and as the drum housing is rotated, the treated water inside the elution tank is pulled upward. It characterized in that it comprises a; 1b rising member having a second outer surface storage for performing a function of intensively falling to a narrow range through the outlet of the second inner surface protrusion.

In addition, a portion of the drum housing adjacent to the second rising member is characterized in that a non-porous portion is formed.

Therefore, the compact complex soil purification system according to an embodiment of the present invention has an effect of enabling simultaneous treatment of soil contaminated with oil and heavy metals while minimizing site installation sites to enable efficient management and operation.

In addition, the compact complex polluted soil purification system according to an embodiment of the present invention has an effect of improving the working environment by minimizing the moving distance of workers while installing the components connected to each other in an optimal position.

In addition, the compact complex soil soil purification system according to an embodiment of the present invention is dropped by a drum-type heavy metal elution tank including a first rising member that is sprayed intensively in a narrow range and a second rising member that is sprayed by being dispersed in a wide range. Since the amount of treated water increases, there is an effect that the effect of eluting heavy metals from contaminated soil can be improved.

In addition, the compact composite soil soil purification system according to an embodiment of the present invention efficiently forms a first-rise member and a second-rise member of a specific structure on the inner and outer surfaces of the drum housing, thereby efficiently using a drum-type heavy metal elution tank. Since it is possible to implement a compact structure, there is an effect of improving space utilization.

1 is a block diagram schematically showing a compact complex soil purification system according to an embodiment of the present invention.
2 is a plan view showing a compact complex soil soil purification system according to an embodiment of the present invention.
3 is a view schematically showing the front of a drum-type heavy metal elution tank used in a compact complex soil purification system according to an embodiment of the present invention.
4 is a view schematically showing a side of a drum-type heavy metal elution tank used in a compact complex soil purification system according to an embodiment of the present invention.
5 is an enlarged perspective view showing a rotating drum of a drum-type heavy metal elution tank used in a compact-type complex soil purification system according to an embodiment of the present invention.
6 is an enlarged cross-sectional view of a rotating drum of a drum-type heavy metal elution tank used in a compact type complex soil purification system according to an embodiment of the present invention.
7 is a view showing a drum-type heavy metal dissolution tank used in a compact complex soil purification system according to another embodiment of the present invention.
8A and 8B are diagrams showing a drum-type heavy metal elution tank used in a compact complex soil purification system according to another embodiment of the present invention.
9A and 9B are enlarged views of a drum-type heavy metal elution tank used in a compact type complex soil purification system according to another embodiment of the present invention shown in FIGS. 8A and 8B.

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

1 is a schematic view showing a compact complex soil soil purification system according to an embodiment of the present invention, and FIG. 2 is a plan view showing a compact complex soil soil purification system according to an embodiment of the present invention.

1 and 2, the compact complex soil soil purification system 10 according to an embodiment of the present invention is disposed along a first direction D1 in which soil soil is supplied and dehydrated cake is discharged. A contaminated soil transport conveyor 100 that allows the soil to be transported in a quantitative manner; and a washing water while transporting the supplied contaminated soil in the first direction (D1) in an axial rotation manner disposed on one end of the soil transport conveyor 100 Mix washer 200 that is washed by spraying; and, is disposed at one end of the mix washer 200 to pass through the soil less than a certain particle size in the contaminated soil supplied, the soil does not pass more than a certain particle size does not pass through the wet to create a clean gravel Vibration sorting device 300; and, in the second direction (D2) to be discharged clean gravel crossing the soil transfer conveyor 100, the central sector (SM) and the first peripheral sector (10) of the system (10) Group that defines S1) This is a clean gravel discharging conveyor 400; and is disposed in the central sector SM of the system 10 to perform particle size separation wetly on the soil introduced from the wet vibration sorting apparatus 300, so that it is higher than the first reference particle size. A first hydro cyclone 500 for discharging small particles to the first a discharge port 511 and discharging particles larger than the first reference particle size to the first b discharge port 512; and disposed adjacent to the first hydro cyclone 500 It is installed inside the elution tank 610 and the elution tank 610 through which the treated water for eluting heavy metals from particles larger than the first reference particle size discharged from the first b discharge port 512 of the first hydrocyclone 500 is introduced. Rotating drum 620 that causes heavy metals chemically bound to the contaminated soil to be eluted by using the falling force of the contaminated soil by being rotated and rotates to rotate the rotating drum 620 by floating inside the elution tank 610 Drum comprising device 630 A heavy metal elution tank 600; and a vibration washing dehydration device 700 disposed adjacent to the drum-type heavy metal elution tank 600 to dehydrate moisture from particles discharged from the drum-type heavy metal elution tank 600 to generate clean sand; Wow, it is disposed along the second direction (D2) in which clean sand is discharged while being intersected with the contaminated soil transport conveyor 100 so as to be parallel to the clean gravel discharge conveyor 400, the central sector SM and the second sector of the system 10. Clean sand discharge conveyor 800, which is a standard for defining the surrounding sector S2; and, disposed in the second peripheral sector S2 of the system 10, wet against soil that has passed through the vibration washing dewatering apparatus 700 A second hydrocyclone 900 that discharges particles smaller than the second reference particle size to the 2a outlet 911 by performing particle size separation and discharges particles larger than the second reference particle size to the second b outlet 921; and 2 is disposed in the peripheral sector (S2) of the first hydro cyclone 500 A sedimentation tank 1000 that receives fine soil from the 1a discharge port 511 and the 2a discharge port 911 of the second hydrocyclone 900 to allow the fine soil to gravity settle to the bottom; and the second peripheral sector S2 ) Is disposed in the sedimentation tank 1000 to receive the fine sediment that has not been precipitated, so that the sedimentation tank 1100 is settled to the bottom using a flocculant; and, the sedimentation tank 1000 and the sedimentation tank disposed in the central sector SM 1100) is connected to the discharge end of the sedimentation tank 1000 and the sedimentation tank 1100 to store the sludge discharged and the concentration tank 1200 to generate gravity-separated concentrated sludge; And, is disposed in the first peripheral sector (S1) It characterized in that it comprises; a filter press (1300) for discharging the concentrated sludge discharged from the concentration tank 1200 to discharge the water to produce the concentrated sludge as a dehydrated cake and discharge it in the first direction (D1).

In the compact composite soil soil purification system 10 according to the embodiment of the present invention, contaminated soil is supplied along the first direction D1 in the left-right direction based on FIG. 2 to be discharged to the side end of the system with dehydrated cake, Contaminated soil washed along the second direction D2, which is the front-rear direction, causes clean gravel or clean sand to be discharged to the front end of the system 10.

First, the input hopper 110, which is disposed at the left end of the system 10 and supplied with contaminated soil, has a structure in which a cross section increases as it goes upward, and thus has an advantageous structure when supplying contaminated soil through a fork lane or the like.

The contaminated soil supplied to the input hopper 110 is supplied to the mix washer 200 through the contaminated soil transport conveyor 100 disposed along the first direction D1. At this time, the soil does not distinguish the properties, but it is possible to determine the degree of contamination and determine the time according to the degree of contamination in the post-process.

The contaminated soil introduced into the mix washer 200 through the contaminated soil transport conveyor 100 is sorted according to desorption and particle size of oil and heavy metals in the wet vibration sorting device 300. The wet vibration sorting device 300 selects particles having a certain particle size or more (2 mm to 40 mm) and discharges them into clean gravel through a clean gravel discharge conveyor 400, and subsequently passes only particles having a certain particle size or less (2 mm or less). The process proceeds.

Specifically, the contaminated soil is connected to the lower end of the input hopper 110 and mixed with the washing water in the mixed washer 200 introduced through the contaminated soil transport conveyor 100 disposed long along the first direction D1.

The mix washer 200 is disposed on one end of the contaminated soil transport conveyor 100 in a paddle type in order to wash the supplied contaminated soil, a plurality of paddles 220 on one rotating shaft 210 Is attached. In addition, the washing water is sprayed through the spray nozzles 230 installed on the top of the mix washer 200.

Therefore, when the rotating shaft 210 rotates and the soil is transferred by the paddle 220, the washing water is sprayed from the spray nozzles 230 and mixed to wash the soil.

The mix washer 200, by adjusting the rotational speed of the rotating shaft 210 can control the throughput of soil contamination.

The supplied washing water is supplied from the process water storage tank 1400, as described later. The specifications of the mix washer 200 are about 4.56m in length, 0.66m in width, and 0.72m in height, and a driving motor for rotating the rotating shaft. Can use about 15 horsepower.

The soil washed from the mix washer 200 is input to the wet vibration sorting device 300 to separate and sort the contaminated soil based on the size of a certain particle size to generate and carry out clean gravel having a size of 2 mm to 40 mm.

That is, the wet vibration sorting device 300 is disposed at the right end of the mix washer 200, and the soil slurry discharged from the mix washer 200 flows in to select particles having a certain particle size or more and pass only fine particles having a particle size or less. To proceed with the subsequent process.

Specifically, the wet vibration sorting apparatus 300 includes a first sorting network 310 and a second wet vibration sorting screen for sorting contaminated soil having a first size or more among the polluted soil in order to efficiently sort the first wet vibration. Of course, it may be configured to include a second sorting network 320 having a second size that is relatively smaller than the first size and installed below the first sorting network 310 in order to efficiently perform the wet vibration screening. Particles that do not pass through the device 300 are screened through a clean gravel discharge conveyor 400 to produce a washing aggregate of 2 mm to 40 mm in size.

Here, the clean gravel discharge conveyor 400 according to the embodiment of the present invention is disposed in the second direction (D2) crossing the soil transfer conveyor 100 disposed in the first direction (D1), in particular, such clean gravel The discharge conveyor 400 serves as a standard for defining the central sector SM and the first peripheral sector S1 of the compact complex soil purification system 10.

Soil below a certain size that has passed through the wet vibration sorting apparatus 300 is supplied to the first hydrocyclone 500 disposed in the central sector SM of the compact complex soil purification system 10 through the pump P. It is then highly screened through a subsequent process.

The first hydro cyclone 500 performs particle size separation based on the first reference particle size by wet, and the first hydro cyclone 500 includes a hollow conical first taper portion 510 and a first nozzle portion ( 520), the first inlet 530 entering from the tangential direction of the cylinder, the first outlet port 511 connected to the wide inlet side of the first tapered portion 510, and the first nozzle unit 520 It is composed of a 1b outlet 512 connected to.

That is, water and contaminated soil are introduced into the first inlet 530 side, and inside the first tapered portion 510, a large vortex and a small vortex are generated by a vortex phenomenon and centrifugal force, and a vertical flow penetrating them in the axial direction occurs.

At this time, a difference occurs in the centrifugal force due to the difference in weight of the particles, thereby separating particles having a particle size larger than the first reference particle size and particles having a particle size smaller than the first reference particle size.

In other words, particles smaller than the first reference particle size and water are discharged through the first a discharge port 511, and particles larger than the first reference particle size are discharged through the first b discharge port 512, wherein the first tapered portion 510 ) By adjusting the length and the ratio of the entrance area at both ends, it is possible to separate the soil based on the desired particle size.

Particles and water smaller than the first reference particle size discharged through the first a discharge port 511 of the first hydrocyclone 500 are supplied to the sedimentation tank 1000 and the first reference discharged through the first b discharge port 512 Particles larger than the particle size are supplied to the drum-type heavy metal elution tank 600.

The drum-type heavy metal elution tank 600 used in the compact-type complex soil soil purification system according to an embodiment of the present invention, as well as the heavy metal in a solid state separated from the micro-earth, still contains heavy metals bound to the micro-earth, etc. As a configuration for eluting, the drum-type heavy metal elution tank 600 may be continuously disposed over the central sector SM and the second peripheral sector S2.

Here, the drum-type heavy metal elution tank 600 mixes the micro-earth with the eluent to allow heavy metal chemically bound to the micro-earth to be eluted. The drum-type heavy metal elution tank 600 uses the force of falling the micro-earth. Heavy metals that are chemically bound to the micro earth can be eluted.

In the drum-type heavy metal elution tank 600, an alkali agent is supplied together with citric acid, which is an eluent, so that the pH in the elution tank 600 can be maintained at a level of approximately 4.0 to 5.0.

In the embodiment of the present invention, an organic acid is used as an eluent for elution of heavy metals, and citric acid can be used, and sodium citrate can be used as an alkaline agent to properly maintain the pH of the eluent.

The reason why citric acid, which is an organic acid, is used instead of inorganic acids such as sulfuric acid and hydrochloric acid, which are generally used to elute heavy metals, is that organic acids are not chemically harmful substances, and are not harmful to the human body and are easy to manage and use. , It is because the organic acid has a characteristic that the elution efficiency for heavy metals is very good. In addition, the alkali-based sodium citrate may be used instead of inorganic-based substances such as sodium hydroxide and potassium hydroxide.

3 is a view schematically showing the front of a drum-type heavy metal elution tank used in a compact-type complex soil soil purification system according to an embodiment of the present invention, and FIG. 4 is a compact-type complex soil soil purification according to an embodiment of the present invention It is a schematic view showing a side of a drum-type heavy metal elution tank used in a system, and FIG. 5 is an enlarged perspective view showing a rotating drum of a drum-type heavy metal elution tank used in a compact type complex soil purification system according to an embodiment of the present invention, 6 is an enlarged cross-sectional view of a rotating drum of a drum-type heavy metal elution tank used in a compact type complex soil purification system according to an embodiment of the present invention.

3 to 6, the drum-type heavy metal elution tank 600 used in the compact type complex soil purification system according to an embodiment of the present invention forms an exterior and has elutant tanks 21 and 22 therein. , 23) by mixing the elution material provided in the contaminated soil and the treatment water for elution of heavy metals from the contaminated soil, the elution tank 610 and the elution tank 610 are installed inside and have a plurality of through holes and rotate by floating A rotating drum 620 that elutes heavy metals bound to contaminated soil, a rotating device 630 that floats and rotates the rotating drum 620 inside the elution tank 610, and protrudes on the inner surface of the rotating drum 620 It is formed so as to rotate the rotating drum 620, the inner surface protrusion 641 to pull up the soil and drop the soil, and the inner surface protrusion 641 to supply the treated water therein to the inner surface protrusion 641 And the position of the corresponding position A first rising member having an outer surface storage unit 642 installed on an outer surface of the drum 620 to perform a function of pulling up and dropping the treated water inside the elution tank 610 as the rotating drum 620 is rotated. 640, and is formed so as to protrude on the outer surface of the rotating drum 620, as the rotating drum 620 is rotated, the function of pulling the treated water inside the elution tank 610 upward and dropping it into the rotating drum 620 It comprises a second rising member 650 for performing.

The elution tank 610 has a treatment water inlet 611 on one side of the upper portion and an elution material inlet 612 on the other side of the upper portion.

Specifically, the dissolution tank 610 is configured to form a treated water inlet 611 connected to the process water storage tank 1400 to provide the treated water to the upper side, so that the treated water is easily introduced into the dissolution tank 610. Make it happen.

At this time, it is possible to control the temperature of the treated water input to the treated water inlet 611 used in the process of elution of heavy metals so that heavy metals can be more efficiently eluted from contaminated soil.

In addition, the elution tank 610 is configured to form an elution material inlet 612 connected to the elution material tanks 21, 22 and 23 to provide the elution material to the other side of the upper side, and the elution material is introduced into the elution tank 610. Make this easy.

In addition, the dissolution tank 610 may have a treatment water discharge port 613 for discharging the used and discharged treated water from the dissolution tank 610 to the lower side.

In addition, the rotating drum 620 is installed in the elution tank 610 while being installed on both sides of the elution tank 610 and extends through both sides of the elution tank 610 to be connected to the rotating device 630 and the outlet drum (621). 622).

The rotating drum 620 is installed inside the elution tank 610 to allow heavy metals chemically bound to the micro earth to be eluted by using the falling force of the micro earth by floating rotation. Specifically, the rotary drum 620 The inlet drum 621 through which contaminated soil to be eluted flows in, and the drum housing 660 through which the contaminated soil introduced through the inlet drum 621 floats and rotates to dissolve heavy metals, and contaminated soil from which heavy metals elute is discharged It comprises an outlet drum 622.

That is, the rotating drum 620 is formed on both sides of the drum housing 660, and the inlet drum 621 and the outlet drum 622 are configured to have a certain length to penetrate and extend both sides of the elution tank 610, and at the same time, the inlet drum 621. And the outlet drum 622 is configured to be connected to the rotating device (630).

Here, the inlet drum 621 and the outlet drum 622 are cylindrical with the same first size, and the drum housing 660 is a second size larger than the first size so that heavy metals in contaminated soil can be more efficiently eluted. It can be made into a cylindrical shape having a.

On the other hand, in the drawing, although the inlet drum 621, the drum housing 660, and the outlet drum 622 are shown as being separated, the inlet drum 621, the drum housing 660, and the outlet drum 622 are integrated. Can be produced.

In addition, the fine soil transferred from the inlet drum 621 is allowed to flow into the interior of the drum housing 660, but the drum housing 660 is formed with a helical rotary transfer blade 661 on the inner surface so that the introduced fine soil is unidirectional. It is formed to be transported, and a plurality of through holes 662 are formed on the outer surface of the drum housing 660 so that contaminated soil is eluted by the eluent by the through holes 662 during rotation.

In addition, a spiral rotating transfer blade 623 is formed on the inner surface of the outlet drum 622 of the rotating drum 620 so that the introduced fine soil can be transferred in one direction.

Then, the rotating device 630 supports the lower portions of the inlet drum 621 and the outlet drum 622 of the rotating drum 620 to a predetermined height, so that the rotating drum 620 floats and rotates inside the elution tank 610. It is characterized by being made.

Specifically, the rotating device 630 is provided on the outer surface of the rotating gear 631 and the outlet drum 622, which are respectively composed of the outer surfaces of the inlet drum 621 and the outlet drum 622 constituting both sides of the rotating drum 620. The drive gear 632 and the rotation gear 631 located on both sides of the elution tank 610 are located at a predetermined height, and the lower parts of the rotation gear 631 configured on the inlet drum 621 and the outlet drum 622 on both sides of the rotating drum 620 are configured. It may be configured to include a plurality of rotating rollers 633 to support, and a driving motor 635 connected to the driving gear 632 and the driving chain 634 of the outlet drum 622 to drive the rotation.

Here, it is preferable that the plurality of rotating rollers 633 are positioned at a predetermined height by the lower base mounting base 636 and rotated by a bearing.

The drum-type heavy metal elution tank 600 according to an embodiment of the present invention maximizes the rotational friction efficiency of the rotating drum 620 so that heavy metal can be removed again from the micro earth.

The rotating drum 620 of the compact composite soil soil purification system 10 according to an embodiment of the present invention includes a plurality of first raising members formed in the drum housing 660 so that the soil can rise and fall when it rotates ( 640) and a second rising member 650, respectively.

The first rising member 640 has an outlet for intensively spraying the treated water in a narrow range. Specifically, the first rising member 640 is formed to protrude on the inner surface of the drum housing 660 and the drum housing 660 The drum housing at a position corresponding to the inner surface protrusion 641 that performs the function of pulling up and dropping the soil when it rotates, and the inner surface protrusion 641 so as to supply the treated water therein to the inside surface protrusion 641 (660) The drum housing 660 is installed on the outer surface is provided with an outer surface storage unit 642 that performs a function of pulling the water inside the elution tank 610 to the upper side to fall.

A plurality of inner surface protrusions 641 installed on the inner surface of the drum housing 660 pulls up the soiled soil when the drum housing 660 rotates, as well as the function of pulling up the treated water inside the elution tank 610 to drop it. To do

The inner surface protrusion 641 is fixed to the inner surface of the drum housing 660, and a protrusion wall 643 having an accommodation space for receiving treated water therein, and a protrusion so that the treated water inside the protrusion wall 643 can be discharged. It is formed on the wall 643 and includes a plurality of outlets 644 for intensively spraying treated water in a narrow range.

The protruding wall 643 protrudes from the inner surface of the drum housing 660 in a mountain shape, and has a long length in a direction crossing the rotation direction of the drum housing 660. A plurality of outlets 644 are formed at the tip of the protruding wall 643. In addition, a through hole 662 is formed in the drum housing 660 at the position where the inner surface protrusion 641 is installed so that the treated water may be introduced into the receiving space inside the inner surface protrusion 641. This is when the inner surface protrusion 641 is located at the bottom, the treatment water of the elution tank 610 flows into the protrusion wall 643 through the through hole 662, and when the protrusion wall 643 is located at the top, the protrusion wall ( 643) The treatment water flowing into the inside is discharged into the drum housing 660 through the outlet 644 and dropped, thereby increasing the effect of discharging heavy metals.

A plurality of outer surface storage units 642 are formed on the outer surface of the drum housing 660 to pull up a larger amount of treated water and drop it. The outer surface storage unit 642 is provided in the form of a trapezoidal container in which one side coupled to the outer surface of the drum housing 660 is opened, and water is introduced into the central portion of the outer surface corresponding to the maximum radius from the center of the drum housing 660. An inlet 645 is formed so that this can be introduced. That is, the outer surface storage unit 642 has a closed shape to accommodate water therein.

The outer surface storage unit 642 is installed on the outer surface of the drum housing 660 in a position corresponding to each inner surface projection 641 so as to supply the treated water therein to the inner surface projection 641, and a large amount of treated water It has a length in the front-rear direction corresponding to the front-rear length of the drum housing 660 so as to accommodate therein, and a width larger than the width of the inner surface protrusion 641. The width of the inlet 645 of the outer surface storage unit 642 is smaller than the entire width of the inner surface projection 641.

When the width of the inlet 645 of the outer surface storage unit 642 is small, a large amount of water can be accommodated, but when the width of the inlet 645 is too small, when the outer surface storage unit 642 is located under the elution tank 610 Since the treatment water may not flow smoothly into the inside, the inlet 645 of the outer surface storage unit 642 should have a size sufficient to allow a sufficient amount of treatment water to flow into the inside.

The inside of the outer surface storage unit 642 and the inner surface protrusion 641 are communicated by a through hole 662 formed in the drum housing 660. Therefore, when the outer surface storage unit 642 rises due to the rotation of the drum housing 660, water inside the outer surface storage unit 642 may be introduced into the inner surface protrusion 641 through the through hole 662, and this water Silver may drop into the drum housing 660 through the outlet 644 of the inner surface protrusion 641.

The second rising member 650 is sprayed by dispersing the treated water over a wide range through the through hole 662 of the drum housing, specifically, the second rising member 650 is provided in a number along the outer surface of the drum housing 660 As the drum housing 660 is rotated, only the function of pulling the treated water inside the elution tank 610 upward and dropping it into the drum housing 660 is performed.

The second rising member 650 is provided to pull the treated water into the drum housing 660 when forward or reverse rotation of the drum housing 660, the diameter from the outer surface of the drum housing 660 The outer surface protrusion 651 formed to protrude in the direction, the first bent portion 652 formed to extend in one direction from the outer surface protrusion 651, and the other side direction opposite to the first bent portion 652 from the outer surface protrusion 651 It includes a second bent portion 653 formed to extend.

The outer surface protruding portion 651 of the second rising member 650 is formed to protrude in the radial direction from the outer surface of the drum housing 660.

In addition, the first bent portion 652 is formed to extend from the outer surface protruding portion 651 and is formed to be bent in one direction of the outer surface protruding portion 651. The space formed by the first bent portion 652 and the outer surface protruding portion 651 becomes a space where the treated water is received and pulled up when the drum housing 660 is rotated normally.

In addition, the second bent portion 653 is formed to extend from the outer surface protrusion 651 like the first bent portion 652, and extends so that the first bent portion 652 is bent in the other direction, which is the opposite direction to which it is bent. Is formed. The space formed by the second bent portion 653 and the outer surface protruding portion 651 becomes a space in which the treated water is accommodated and pulled up when the drum housing 660 is reversed.

Meanwhile, a non-porous portion 654 is formed in a portion of the drum housing 660 adjacent to the second lifting member 650. The non-porous portion 654 is a portion in which a plurality of through holes 662 formed in the drum housing 660 are not formed, that is, a portion between the inside of the drum housing 660 and the elution tank 610, which is second. The drum housing 660 so that the treated water that is pulled up by the lifting member 650 is not introduced into the drum housing 660 while being pulled up, but is pulled up to a predetermined position and then dispersed and dropped over a wide range. ) It serves to accommodate the inflow.

Therefore, the drum-type heavy metal elution tank 600 of the compact complex soil soil purification system 10 according to an embodiment of the present invention is sprayed by dispersing it in a wide range with a first rising member 640 that intensively sprays in a narrow range Since the amount of the treated water falling by the second rising member 650 increases, the effect of eluting heavy metals from contaminated soil is improved.

In addition, the drum-type heavy metal elution tank 600 of the compact-type complex soil soil purification system 10 according to an embodiment of the present invention includes a first housing member 640 and a second housing member 650 having a specific structure in a drum housing. (660) By forming the inner and outer surfaces of the unitary structure, the drum housing 660 can be efficiently used to realize a more compact structure, thereby improving the space utilization of the drum-type heavy metal elution tank 600.

The water and particles washed in the drum-type heavy metal elution tank 600 are supplied to the vibration washing dehydration device 700, and the vibration washing dehydration device 700 is water-dried in the particles washed in the drum-type heavy metal elution tank 600. Or dehydrated to produce and carry out clean sand having a size of 0.075 mm to 2 mm through the clean sand discharge conveyor 800, or the remaining particles other than the clean sand are supplied to the second hydro cyclone 900 through the pump P and subsequent processes Let this proceed.

The clean sand discharge conveyor 800 is arranged in a second direction (D2), which is parallel to the clean gravel discharge conveyor 400 and crosses the polluted soil transport conveyor 100, in particular, the compact complex soil purification system 10 It serves as a standard for defining the central sector SM and the second peripheral sector S2.

The fine soil that has passed through the vibration washing dewatering device 700 is provided as a second hydro cyclone 900 disposed in the second peripheral sector S2 of the compact complex soil purification system 10, which is the second hydro cyclone ( 900), the particle size separation is performed by wet to discharge particles smaller than the second reference particle size to the 2a outlet 911 and particles larger than the second reference particle size to the second b outlet 921. Particularly, the second hydro cyclone 900 has the same configuration as the first hydro cyclone 500 and wetly performs particle size separation based on the second reference particle size. The second hydro cyclone 900 is largely deceived. Consists of an empty conical second tapered portion 910 and a second nozzle portion 920, connected to a second inlet 930 entering from a cylindrical tangential direction, and a wide inlet side of the second tapered portion 910 It is composed of a 2a outlet 911 and a 2b outlet 921 connected to the second nozzle unit 920.

Particles smaller than the second reference particle size discharged through the 2a discharge port of the second hydrocyclone 900 are supplied to the sedimentation tank 1000, and particles larger than the second reference particle size discharged through the 2b discharge port 921 are subjected to vibration washing. The dehydration procedure may be performed again by the dehydration apparatus 700.

The microsatellite discharged from the 1a discharge port 511 of the first hydrocyclone 500 and the 2a discharge port 911 of the second hydrocyclone 900 is the second peripheral sector of the compact complex soil purification system 10 It is supplied to the sedimentation tank 1000 disposed in (S2).

As described above, the fine soil and washing water having a particle size of less than the first and second reference particle sizes that have passed through the first and second hydrocyclones 500 and 900 remain in the sedimentation tank 1000 for about 5 to 10 minutes, and the fine soil is gravity precipitated and separated from the washing water. .

Therefore, the fine sediment deposited in the lower part of the sedimentation tank 1000 is supplied to the concentrating tank 1200 disposed in the central sector SM of the compact complex contaminated soil purification system, and the remaining unprecipitated ultrafine soil and supernatant are compact. It is supplied to the sedimentation tank 1100 disposed in the second peripheral sector S2 of the complex polluted soil purification system 10.

In addition, the ultrafine soil and washing water supplied to the sedimentation tank 1100 are coagulated and precipitated in a sedimentation tank 1100 to aggregate and precipitate the ultrafine soil, and the precipitated ultrafine soil is purified through a concentrating tank 1200 to purify a compact complex contaminated soil. It is supplied to the filter press 1300 disposed in the first peripheral sector S1 of the system 10, and the contaminated water is supplied to the sedimentation tank treatment tank 1010 to be reused as washing water.

At this time, the flocculant is mixed with the washing water in the flocculant stirring tank 1110 disposed in the second peripheral sector S2 of the compact type complex soil purification system 10 and is introduced into the settling tank 1100. The flocculant can be used as an inorganic electrolyte or an organic polymer compound as a substance that precipitates solid particles suspended in a liquid by agglomeration.

Meanwhile, a scum removing device 1020 and a scum storage device 1120 for removing scum discharged from the sedimentation tank 1000 and the sedimentation tank 1100 are connected to the sedimentation tank 1000 and the sedimentation tank 1100, respectively. The scum removal device 1020, 1120 fills the waste water in which the suspended solids are separated from the sedimentation tank 1000 and the sedimentation tank 1100, and injects air to remove the micro-floating solids and oil floating on the upper part and remove the scum storage device 1020 , 1120).

Here, the scum sent from the sedimentation tank 1100 flows into the oil-water separation tank 1140 to separate the oil contained in the scum. The oil separated through the oil-water separation tank 1140 may be stored in the oil storage tank 1150.

The concentrating tank 1200 is disposed in the central sector SM of the compact complex contaminated soil purification system, and the sedimentation tank 1000 and sedimentation tank arranged in the second peripheral sector S2 of the compact complex contaminated soil purification system 10 are disposed. The fine soil supplied from (1100) is concentrated to be transferred to the filter press 1300 disposed in the first peripheral sector S1 of the compact complex soil purification system 10.

The filter press 1300 dehydrates the concentrated fine soil, discharges it as a dehydration cake, and fresh water discharged in the dehydration process is transferred to a filtrate tank 1310, and the dehydration cake can be transferred to a separate dehydration cake processing facility. have.

The filter press 1300 may be composed of a pneumatic filter press, for this purpose, a compact complex soil purification system, an air tank 1320 for compressing the sludge filled in the filter press 1300 by air pressure; and, It may be configured to further include an air compressor (1330) for compressing the air to be stored in the air tank 1320.

On the other hand, the water separated from the oil in the oil separation tank 1140 is supplied to the process water storage tank 1400, which is used for the mix washer 200 and the wet vibration sorting device 300 and the drum-type heavy metal. Water is supplied to the outlet 600 and the vibration washing dehydration device 700, and the process water storage tank 1400 includes a supplemental water storage tank 1500 for replenishing water so that the water in the process water storage tank 1400 reaches a certain level. Connected.

Here, the first hydro cyclone 500, the concentration tank 1200, the oil separation tank 1140, the process water storage tank 1400, the supplemental water storage tank of the compact complex soil soil purification system 10 according to an embodiment of the present invention (1500) is disposed in the central sector (SM), the second hydro cyclone (900), the vibration washing dehydration device (700), the sedimentation tank (1000), and the sedimentation tank (1100) are disposed in the second surrounding sector (S2). By placing the components connected to each other in an optimal position, the dehydration cake discharged from the filter press 1300 is disposed by placing the filter press 1300 in the first peripheral sector S1 while minimizing the site installation site. In addition to allowing it to be discharged in the same direction, the cleaned clean sand and clean gravel are discharged toward the front of the system 10 to be separated from the dehydrated cake, enabling efficient management operation while simultaneously treating soil contaminated with oil and heavy metals. Lee becomes possible.

In addition, the compact composite soil soil purification system 10 according to an embodiment of the present invention has an effect of improving the working environment by minimizing the moving distance of workers while installing the components connected to each other in adjacent positions. .

Another embodiment of the present invention will be described with reference to FIG. 7. The same reference numerals are used to indicate the same components as those of the above-described embodiment, and descriptions thereof will be omitted. 7 is a view showing a drum-type heavy metal elution tank of a purification system for a compact complex soil soil according to another embodiment of the present invention.

1 and 7, the drum-type heavy metal elution tank 600a according to another embodiment of the present invention forms an exterior and is provided with the eluent provided in the eluent tanks 21, 22, and 23 therein. The elution tank 610 in which the treated water for dissolving heavy metals from the contaminated soil by mixing the contaminated soil and the elution tank 610 are installed inside and have a plurality of through holes and rotate to float to elute heavy metals bound to the contaminated soil. The rotating drum 620a to be rotated, and the rotating device 630 which floats and rotates the rotating drum 620a inside the elution tank 610, and is formed to protrude on the inner surface of the rotating drum 620a so that the rotating drum 620a is Rotating drum (620) in a position corresponding to the inner surface protrusion (641) so that the inner surface protrusion (641) and the inner surface protrusion (641) for supplying the treated water therein to perform the function of pulling up and dropping the soil when rotating ) Is installed on the outer surface of the rotating drum (620) As it is rotated, the first elevating member 640 having an outer surface storage unit 642 which performs a function of pulling the treated water inside the elution tank 610 upward and dropping it, and a spiral on the outer surface of the rotating drum 620a As the rotating drum 620a is formed to be extended, a plurality of second raising members 650a performing a function of pulling the treated water inside the elution tank 610 upward and dropping it into the rotating drum 620a. It includes.

The second rising member 650a of the drum-type heavy metal elution tank 600 according to another embodiment of the present invention is formed to extend in a spiral shape along the longitudinal direction of the outer surface of the drum housing 660, and this configuration is the drum housing 660 When rotating in the forward or reverse direction, the treated water accumulated in the lower portion of the elution tank 610 is pushed forward or backward by the operation of the second rising member 650a, so that a strong flow of treated water for heavy metal elution from contaminated soil is generated. To be formed.

Therefore, the drum-type heavy metal elution tank 600 according to another embodiment of the present invention when the heavy metal elution is made, the elution tank 610 by the operation of the second rising member 650a provided in a spiral shape on the outer surface of the drum housing 660 ) A strong flow of treated water for elution of heavy metals is formed in the treated water that is retained at the bottom. That is, when the drum housing 660 rotates in the forward direction, the number of treatments outside the drum housing 660 is pushed toward the front of the drum housing 660 by the operation of the second lifting member 650a, and the drum housing 660 When rotating in the reverse direction, the number of treatments outside the drum housing 660 is pushed to the rear of the drum housing 660 by the operation of the second rising member 650a.

Through this operation, the treated water filled in the elution tank 610 flows in the front-rear direction and a strong flow for elution of heavy metal is formed, so that the water level at the front side of the drum housing 660 is increased or the drum housing 660 is added. The phenomenon of raising the water level at the rear side is repeated. In addition, the change in the flow of the treated water and the fluctuation of the treated water are transmitted to the treated water inside the drum housing 660 through the through hole 662 of the drum housing 660, so that the effect of elution of heavy metals in contaminated soil can be improved. .

Another embodiment of the present invention will be described with reference to FIGS. 8A to 9A. The same reference numerals are used to indicate the same components as those of the above-described embodiment, and descriptions thereof will be omitted. 8A and 8B are diagrams illustrating a drum-type heavy metal elution tank used in a compact type contaminated soil purification system according to another embodiment of the present invention, and FIGS. 9A and 9B are the present invention illustrated in FIGS. 8A and 8B This is an enlarged view of a drum-type heavy metal elution tank used in a compact type complex soil purification system according to another embodiment of the present invention.

1, 8A and 8B, as shown in FIGS. 9A and 9B, the drum-type heavy metal elution tank 600b according to another embodiment of the present invention forms an appearance and has an eluent tank 21 therein. 22, 23) by mixing the eluent provided with the contaminated soil and the treatment water for elution of heavy metals from the contaminated soil, the elution tank 610 and the elution tank 610 are installed inside and have a large number of through holes and rotate. By rotating the rotary drum (620b) to elute the heavy metals bound to the contaminated soil, the rotary device (630) for rotating the rotating drum (620b) to the inside of the elution tank (610), and the inner surface of the rotating drum (620b) It is formed so as to protrude, and when the rotating drum 620b rotates, the inner surface protrusion 641a made of members having different inclinations to perform the function of pulling up and dropping the soil, and the inner surface protrusion 641a ) So I can supply it inside It is installed on the outer surface of the rotating drum 620b at a position corresponding to the protrusion 641a, and the outer surface storage unit performs a function of pulling up and dropping the treated water inside the elution tank 610 as the rotating drum 620b is rotated. It is formed so as to protrude on the outer surface of the first rising member 640a having 642a and the rotating drum 620b, and as the rotating drum 620b is rotated, the treated water inside the elution tank 610 is pulled upward. It is configured to include a second rising member 650 that performs a function of dropping into the rotating drum 620b.

The first lifting member 640a of the drum-type heavy metal elution tank 600b according to another embodiment of the present invention includes a first inner surface protrusion 641a which is inclined in one direction with respect to the longitudinal direction of the drum housing 660. , It is formed on the outer surface of the drum housing 660 at a position corresponding to the first inner surface protrusion 641a so as to supply the treated water therein to the first inner surface protrusion 641a, so that the drum housing 660 is rotated. A product having a first outer surface storage unit 642a that performs a function of intensively dropping the treated water inside the outlet 610 upwardly through the outlet 644a of the first inner surface protrusion 641a. 1a rising member 670a; and a second inner surface protrusion 641b extending integrally from the first inner surface protrusion 641a but being inclined in the opposite direction, and the inside of the second inner surface protrusion 641b. Corresponding to the second inner surface projection (641b) to be supplied to As the drum housing 660 is formed on the outer surface of the drum housing 660 in the position, the treated water inside the elution tank 610 is pulled upward, thereby narrowing the range through the outlet 644a of the second inner surface protrusion 641b. It may include a; 1b rising member (680a) having a second outer surface storage unit (642b) for performing a function of intensively falling on.

Including the 1a ascending member 670a and the 1b ascending member 680a formed to be inclined in one direction with respect to the longitudinal direction, the contaminated soil is raised to the uppermost position and is moved toward the center of the drum housing 660 to drop more effectively. It is possible to further improve the effect of dissolution of heavy metals in contaminated soil.

As another modification of the first lifting member 640, the inner surface protrusion 641 has a different height, and the first inner surface protrusion 641a made of a horizontal member with respect to the longitudinal direction of the drum housing 660, and the inside thereof It is formed on the outer surface of the drum housing 660 at a position corresponding to the first inner surface protrusion 641a so as to supply the treated water of the first inner surface protrusion 641a, so that the elution tank 610 is rotated as the drum housing 660 is rotated. ) 1a lifting member having a first outer surface storage portion 642a that performs a function of intensively dropping a narrow range through the outlet 644a of the first inner surface protrusion 641a by pulling the treated water up there (670a); And, the first inner surface protrusion (641a) and the second inner surface protrusion (641b), which is discontinuously disposed and made of an inclined member with respect to the longitudinal direction of the drum housing (660), and the number of treated water therein A second inner surface protrusion 641b so that the inner surface protrusion 641b can be supplied inside It is formed on the outer surface of the drum housing 660 in the corresponding position, and as the drum housing 660 is rotated, the treated water inside the elution tank 610 is pulled upwards through the outlet 644a of the second inner surface protrusion 641b. It may include a; 1b rising member (680a) having a second outer surface storage unit 642b for performing a function of intensively falling in a narrow range.

In this way, the inner protrusion 641 mounted to form a space between the 1a rising member 670a and the 1b rising member 680a pulls relatively heavy soil to a relatively high position according to the height change in the inclined member. It can be raised and dropped, and relatively light contaminated soil can be dropped from a relatively low position to a space existing between the inclined member and the horizontal member, thereby enabling selective heavy metal elution depending on the state of the contaminated soil.

Therefore, the drum-type heavy metal elution tank 600b of the compact type soil polluted soil purification system 10 according to another embodiment of the present invention includes a 1a rising member 670a and a 1b rising member (1) of the first lifting member 640a. The arrangement or spacing of 680a) can further improve the effect of discharging heavy metals on contaminated soil or allow selective heavy metal dissolution depending on the condition of contaminated soil.

As described above, the compact complex polluted soil purification system according to an embodiment of the present invention is divided and arranged for each component connected to each other, thereby minimizing the site installation site, enabling efficient management operation, and minimizing the moving distance of workers. It can be seen that improving the working environment is a basic technical idea. Therefore, of course, many other modifications are possible to those skilled in the art within the scope of the basic technical idea of the present invention.

10 ... Compact type contaminated soil purification system 100 ... Contaminated soil transport conveyor
200 ... mix washer 300 ... wet vibration sorting device
400 ... clean gravel discharge conveyor 500 ... 1st hydro cyclone
600 ... attraction scrubber 700 ... vibration washing dewatering device
800 ... Clean sand discharge conveyor 900 ... 2nd hydro cyclone
1000 ... sedimentation tank 1100 ... sedimentation tank
1200 ... concentration tank 1300 ... filter press
1400 ... Process water storage tank 1500 ... Replenished water storage tank

Claims (10)

A contaminated soil transfer conveyor that is disposed along a first direction in which contaminated soil is supplied and dehydrated cake is discharged so that the contaminated soil is quantitatively transferred; and,
Mix washer is disposed on one end of the contaminated soil transport conveyor to transport the contaminated soil supplied in the first direction in an axial rotation manner to spray and wash the washing water;
Wet vibration sorting device that is disposed at one end of the mix washer to pass the soil less than a certain particle size in the contaminated soil to pass through, and the soil more than a certain particle size does not pass, and generates clean gravel; and,
Clean gravel discharge conveyor that is arranged along a second direction to cross the contaminated soil transport conveyor and discharges the clean gravel as a reference for defining a central sector and a first peripheral sector of the system; and,
The particle size smaller than the first reference particle size is discharged to the 1a discharge port by performing particle size separation on the soil introduced from the wet vibration sorting device in the central sector of the system, and the particle larger than the first reference particle size is 1b. A first hydro cyclone to discharge to the outlet; And,
The elution tank is disposed adjacent to the first hydrocyclone and the treatment water for eluting heavy metals from particles larger than the first reference particle size discharged from the first b outlet of the first hydrocyclone is installed inside the elution tank. A drum-type heavy metal elution tank including a rotating drum that allows heavy metal chemically bound to the contaminated soil to elute by using the falling force of the contaminated soil by floating rotation, and a rotating device that floats and rotates the rotating drum inside the elution tank. ;Wow,
A vibration washing dewatering device disposed adjacent to the drum-type heavy metal elution tank to dehydrate moisture from particles discharged from the drum-type heavy metal elution tank to generate clean sand; and,
A clean sand discharge conveyor that is arranged along a second direction in which the clean sand is discharged while being intersected with the contaminated soil transport conveyor so as to be parallel to the clean gravel discharge conveyor, and serves as a standard for defining a central sector and a second peripheral sector of the system; and,
Particles that are disposed in the second peripheral sector and are subjected to particle size separation wetly on the soil that has passed through the vibration washing dehydration device to discharge particles smaller than the second reference particle size into the 2a outlet and particles larger than the second reference particle size to the 2b outlet A second hydro cyclone discharged to; And,
A sedimentation tank disposed in the second peripheral sector to receive micro-soil from the 1a discharge port of the first hydrocyclone and the 2a discharge port of the second hydro cyclone to allow the fine soil to gravity settle to the bottom; and,
A sedimentation tank disposed in the second peripheral sector to receive fine sediment that has not been precipitated in the sedimentation tank and to settle to the bottom using a flocculant; and,
A concentration tank disposed in the central sector and connected to the discharge ends of the settling and sedimentation tanks to store sludge discharged to the settling and sedimentation tanks and generate gravity-separated concentrated sludge; and,
It includes; a filter press disposed in the first peripheral sector to discharge the concentrated sludge discharged from the concentration tank to discharge water to generate concentrated sludge into a dehydrated cake and discharge it in the first direction;
The rotating drum,
A cylindrical inlet drum of the first size to which the fine soils to be eluted flow;
A larger size than the first size in which a plurality of through holes are formed on the outer circumferential surface and a spiral first rotating transfer blade is formed on the inner circumferential surface so that the heavy metals are eluted and rotated through the inlet drum so that heavy metals are eluted. Two-sized cylindrical drum housing; and,
It includes; a cylindrical outlet drum of the first size in which a second rotating transfer blade of a spiral is formed on its inner circumferential surface so that the fine soil from which the heavy metal is eluted from the drum housing is discharged to the outside;
The drum-type heavy metal elution tank,
It is formed so as to protrude on the inner surface of the drum housing, and performs the function of pulling up and dropping contaminated soil when the drum housing rotates, and at the same time, an inner surface protrusion that performs a function of intensively dropping treated water to a narrow range through its outlet, And a trapezoidal container having an open side coupled to the outer surface of the drum housing at a position corresponding to the inner surface protrusion so as to supply the treated water therein to the inner surface protrusion. A plurality of first rising member having an outer surface storage for performing a function of pulling the treated water upward to drop therein; and,
It is formed so as to protrude on the outer surface of the drum housing, while alternately positioned with the plurality of first lifting members, as the drum housing is rotated, the treated water inside the elution tank is pulled upward and wide through the through hole of the drum housing. It includes a plurality of second rising member that performs a function of dispersing and falling in the range;
The second rising member includes an outer surface protrusion formed protruding in a radial direction from the outer surface of the drum housing and extending in a spiral shape along a longitudinal direction of the outer surface of the drum housing, and a first bending part extending in one direction from the outer surface protrusion. , A second bent portion extending from the outer surface protrusion in the other direction opposite to the first bent portion,
When the drum housing rotates in the forward or reverse direction, the second rising member is pushed forward or rearward by the operation of the outer surface protrusion of the second rising member and the first and second bending parts of the second elevating member. This results in a strong stream of treated water for elution of heavy metals from contaminated soil.
A portion of the drum housing adjacent to the second rising member is formed with a non-porous portion, and does not flow into the drum housing while the number of treatments being pulled up by the second rising member is being raised, and is raised to a predetermined position. A compact complex contaminated soil purification system characterized by being accommodated into the drum housing so that the treated water is dispersed and dropped over a wide range. According to claim 1,
The compact complex soil purification system,
It is located adjacent to the sedimentation tank and is disposed in the central sector, is located adjacent to the sedimentation tank, and the air bubbles sent from the sedimentation tank are introduced to separate the oil contained in the bubbles.
A process water storage tank disposed in the central sector to supply water to the mix washer, the wet vibration sorting device, the drum type heavy metal elution tank, and the vibration washing dewatering device by receiving water separated from the oil separation tank; and,
And a replenishment water storage tank disposed in the central sector to replenish water so that the water in the process water storage tank is at a constant water level. delete delete delete delete delete According to claim 1,
The first rising member,
The outer surface of the drum housing at a position corresponding to the first inner surface protrusion so that the first inner surface protrusion formed to be inclined in one direction with respect to the longitudinal direction of the drum housing and the processing water therein can be supplied into the first inner surface protrusion. It is formed in the drum housing is provided with a first outer surface storage unit for performing a function of intensively dropping to a narrow range through the outlet of the first inner surface protrusion by raising the treated water inside the elution tank upward as the drum is rotated 1a rising member; and,
The second inner surface protrusion which extends integrally from the first inner surface protrusion but is inclined in the opposite direction, and the drum at a position corresponding to the second inner surface protrusion so as to supply the treated water therein into the second inner surface protrusion. It is formed on the outer surface of the housing, and as the drum housing is rotated, it has a second outer surface storage unit that pulls the treated water inside the elution tank upward and performs a function of intensively falling in a narrow range through the outlet of the second inner surface protrusion. A compact composite soil soil purification system comprising a; 1b rising member. According to claim 1,
The first rising member,
A first inner surface protrusion made of a horizontal member with respect to the longitudinal direction of the drum housing, and formed on the outer surface of the drum housing at a position corresponding to the first inner surface protrusion so as to supply the treated water therein into the first inner surface protrusion As the drum housing is rotated, the first 1a rise having a first outer surface storage part that performs a function of intensively dropping the treated water inside the elution tank to the upper part through the outlet of the first inner surface protrusion part Absence;
The second inner surface protrusion, which is disposed discontinuously with the first inner surface protrusion and is made of an inclined member with respect to the longitudinal direction of the drum housing, and the second inner surface protrusion so as to supply the treated water therein into the second inner surface protrusion. It is formed on the outer surface of the drum housing in a position corresponding to and performs the function of intensively dropping a narrow range through the outlet of the second inner surface protrusion by raising the treated water inside the elution tank upward as the drum housing is rotated. A compact composite soil soil purification system comprising a; 1b rising member having a second outer surface storage unit. delete

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