KR102068941B1 - 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 composite contaminated soil purification system capable of simultaneously treating composite soil contaminated with oil and heavy metals, including a contaminated soil transport conveyor, a mix washer, a wet vibration sorting device, a clean gravel discharge conveyor, a first hydro cyclone, an attrition scrubber, a vibration washing dehydrator, a clean sand discharge conveyor, a second hydro cyclone, a grit chamber, a settling tank, and a concentration tank filter press.

Description

COMPACT TYPE REMEDIATION SYSTEM OF COMPLEX CONTAMINATED SOILS

The present invention relates to a compact complex contaminated soil purification system, and more particularly, to contaminate complex components with oil and heavy metals while minimizing site installation sites by placing components linked to each other at optimal positions adjacent to each other. The present invention relates to a compact complex contaminated 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, soil pollution is a very serious threat to food production, and because it causes pollution of drinking water sources through surface water as well as groundwater pollution. Contaminated soil needs to be cleaned up early.

In recent years, soil pollution in Korea is mainly caused by unauthorized landfill or leakage accident of liquid waste, and is caused by underground diffusion of ground deposits left over from long-term industrial activities. It is caused by several kinds of chemical species rather than a single compound, and representative compound pollution occurs in most industrial areas in the form of oils and heavy metals.

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

The method of cleaning contaminated soil is a technique to weaken the surface tension of harmful organic pollutants bound to soil particles by using an appropriate cleaning agent or to separate heavy metals into liquid phase to separate them from soil particles. On the other hand, there is an advantage that can be applied regardless of the type of contaminants.

Soil washing method is divided into In-situ method and Ex-situ method, and In-situ method does not excavate contaminated soil, and does not excavate contaminated soil, washing solution injection well, washing solution discharge well, washing effluent treatment facility, pump and instrumentation facility. Soil Flushing, which directly installs a volatile material treatment facility in a contaminated site and circulates the cleaning agent in the contaminated soil to be treated. Soil Flushing is a long treatment time and difficult to recover. The soil washing method is mainly based on the Ex-situ method.

Ex-situ method finds the distribution of pollutants in soil and physical / chemical characteristics of the soil and excavates the contaminated soil within the range to be treated, and then removes the excavated contaminated soil using a suitable cleaning agent where As a method of washing, it has recently been used as a generalized soil washing method (Soil Washing).

It is a technology to restore soil by removing various contaminants including oils and heavy metals attached to contaminated soil by selecting and washing soil contaminated by the conventional soil washing method in multiple stages. Korean Patent No. 10-0534067 Soil washing method and apparatus for screening treatment) has been proposed.

The prior art is to screen the contaminated soil through a dry screening step and a high pressure sprinkling screening step, and then washed in a primary washing tank and discharged into a floating soil containing a large amount of contaminants and a sedimented soil containing a small amount of contaminants. The sedimented soil is washed and discharged into fine soil and granulated soil at the same time as washing in the secondary washing tank, and the granulated soil is dehydrated and reduced to restoration soil, and the fine soil is precipitated, flocculated and dehydrated together with the floating soil discharged from the primary washing tank. It is a technology that makes contaminated sludge for disposal through the process and neutralizes and recycles the contaminated cleaner.

The conventional prior art is to sort out the soil particles of large particle size in the dry sorter, high pressure sprinkler, and then the washing process in the primary and secondary washing tanks, and then discard the fine soil and flotation produced in the washing process Since the waste is made of contaminated sludge, the disposal cost of the waste is excessive, as well as the situation that causes the second environmental pollution due to the waste, in particular, there was a problem that can not effectively remove the contaminants adsorbed in the soil of the particulate.

In addition, when the metal component is very strongly combined with the soil particles only by the conventional soil washing technique, when the density and surface properties of the metal-containing soil and the non-containing soil are not clearly distinguished, various chemical properties of the heavy metals are used to clean the soil. If the technology is difficult to apply, when heavy metals are combined with soil particles of various sizes, organic soils with high viscosity are found in soils where the silt / clay content is above 30-50% or the humic content is high. If included, it was difficult to effectively remove contaminants adsorbed to the soil.

In particular, the conventional soil washing technology has a low purification efficiency when the soil to be applied contains a large amount of fine soil, which is due to the characteristics of the fine soil with a high specific surface area, a large amount of adsorption sites, granulated soil As organic and inorganic contaminants are adsorbed more strongly than in the case of the case, it is difficult to remove and remove them through the purification method, which requires a lot of installation cost in terms of economy, eco-friendliness, workability, and safety of the purification system, and has a lot of 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 simultaneously treating soil contaminated with oil and heavy metals while allowing efficient management and operation by minimizing site installation site.

Another aspect of the present invention is to provide a compact, complex soil cleaning system for improving the working environment by minimizing the moving distance of the worker while installing the components connected to each other in the optimum position.

Another aspect of the present invention is to provide a compact, complex soil contaminated soil purification system that can maximize friction cleaning power through the attrition rubber which always shows excellent friction cleaning performance irrespective of the degree of contamination of the contaminated soil. have.

In another aspect of the present invention, since the sub impellers overlapping with the main impellers inside the attrition scrubber are installed between the main impellers, the friction cleaning can be performed more smoothly, and the outer portion of the attrition scrubber The present invention provides a compact, complex soil cleaning system capable of uniformly cleaning and cleaning soiled soil.

Compact complex contaminated soil purification system according to an embodiment of the present invention, the contaminated soil transport conveyor is disposed along the first direction in which the contaminated soil is supplied and the dewatered cake is discharged so that the contaminated soil is conveyed quantitatively; and contaminated soil Mix washer which is disposed at one end of the conveying conveyor and sprays the washing water while transporting the supplied contaminated soil in the first direction in an axial rotation manner; A wet vibrating sorting device that passes through the soil and does not pass through the soil over a predetermined particle size, and generates clean gravel; and is disposed along a second direction in which the clean gravel is discharged while crossing the contaminated soil transport conveyor. A clean gravel discharge conveyor serving as a reference for defining a peripheral sector; A first hydro cyclone that wet-separates the soils introduced from the type vibrating sorting apparatus to discharge particles smaller than the first reference particle size to the first a discharge port and discharge particles larger than the first reference particle size to the first b discharge port; And a heavy metal which is disposed adjacent to the first hydro cyclone and is eluted from particles larger than the first reference particle size discharged from the first b outlet of the first hydro cyclone to be acid-washed, and is formed inside the acid detergent receiver. Attrition scrubber comprising a main friction cleaning unit and a sub friction cleaning unit provided in the main body; and disposed adjacent to the attribution scrubber to dehydrate water from the particles discharged from the attribution scrubber to generate clean sand Vibration washing dewatering device; and clean, while crossing the soil transfer conveyor in parallel with the clean gravel discharge conveyor A clean sand discharge conveyor disposed along the second direction in which the ladles are discharged and defining a central sector and a second peripheral sector of the system; A second hydro cyclone that performs particle size separation to discharge particles smaller than the second reference particle size to the second a discharge port and discharges particles larger than the second reference particle size to the second b discharge port; and a first hydro is disposed in the second peripheral sector. A sedimentation tank receiving fine soil from the 1a outlet of the cyclone and the 2a outlet of the second hydro cyclone to allow gravity sediment to settle to the bottom; and a fine soil not disposed in the sedimentation tank in the second peripheral sector. A settling tank which is supplied and settles to the bottom using a flocculant; and is disposed in the central sector and connected to the settling tank and the discharge end of the settling tank And a thickening tank for storing sludge discharged in the settling tank and generating concentrated sludge separated by gravity; It characterized in that it comprises a; filter press for discharging in one direction.

The compact complex contaminated soil purification system, the oil and water separation tank disposed adjacent to the sedimentation tank and disposed in the central sector and located adjacent to the sedimentation tank, the air from the sedimentation tank flows in and separates the oil contained in the bubbles. A process water storage tank disposed in a sector and supplying water to the mix washer, a wet vibration sorting device, an attachment scrubber, and a vibration washing dewatering device receiving water separated from an oil-water separation tank; It is characterized in that it comprises a; replenishment water storage tank for replenishing the water so that the water in the water storage tank is a certain level.

The attrition scrubber may include: a main body having an acid cleaner containing an acid cleaner provided in the chemical tank to form an exterior, and rotatably coupled to an upper surface of a central part of the main body to perform main frictional cleaning of contaminated soil; A main friction cleaning unit including a main drive shaft having main impellers to extend and extending along a height direction, and a main drive motor disposed on an upper surface of the main body to provide rotational force to the main drive shaft; The sub impeller is rotatably coupled to the main impellers to overlap the main impellers and perform subsidiary friction cleaning on the contaminated soil. The sub impellers extend along the height direction parallel to the main drive shaft. And to provide rotational force to the sub drive shaft. A sub-friction cleaning unit including a sub-drive motor disposed on a surface thereof, and a sub-friction cleaning unit continuously protruding along the inner circumferential surface of the main body to prevent the contaminated soil from escaping or scattering to the upper and lower parts of the main body, thereby providing a friction cleaning effect on the contaminated soil It is characterized in that it comprises a; projections for maximizing.

The attrition scrubber may include: a main body having an acid cleaner containing an acid cleaner provided in the chemical tank to form an exterior, and rotatably coupled to an upper surface of a central part of the main body to perform main frictional cleaning of contaminated soil; A main friction cleaning unit including a main drive shaft having main impellers to extend and extending along the height direction, and a main drive motor disposed on an upper surface of the main body to provide rotational force to the main drive shaft; A sub-drive shaft having a sub-impeller which is rotatably coupled to the main impellers and is disposed at a position facing the main impellers to perform auxiliary friction cleaning of contaminated soil, and a main body for providing rotational force to the sub-drive shaft. Of the sub-drive motor and the sub-drive motor disposed on the lower surface of the And a sub friction cleaning unit including a media member for transmitting the sub drive shaft to the sub drive shaft; and a friction cleaning for the contaminated soil by continuously protruding along the inner circumferential surface of the main body so that the contaminated soil does not escape or scatter to the upper and lower parts of the main body. It characterized in that it comprises a; projections for maximizing the effect.

The attrition scrubber may include: a main body having an acid cleaner containing an acid cleaner provided in the chemical tank to form an exterior, and rotatably coupled to an upper surface of a central part of the main body to perform main frictional cleaning of contaminated soil; A main friction cleaning unit including a main drive shaft having main impellers to extend and extending along a height direction, and a main drive motor disposed on an upper surface of the main body to provide rotational force to the main drive shaft; and an inner circumferential surface of the main body A sub friction cleaning unit comprising a plurality of sub blades which are formed to be long and perform subsidiary friction cleaning of contaminated soil; Maximizes friction cleaning effects on contaminated soils by preventing them from leaving or scattering It characterized in that it comprises a protrusion for.

The intermediate member is provided with magnets on the rear surface of the sub impeller disposed at the bottom of the sub impellers and the surface of the driving plate provided in the sub driving motor, so that the magnets on the surface of the sub impeller and the surface of the driving plate face each other. When the main body is disposed above the furnace driving plate and the driving plate is rotated by the sub driving motor, the rotational force is transmitted by the magnetic force so that the sub driving shaft having the sub impellers inside the main body rotates.

The sub-blade is formed gradually shorter toward the center portion from the upper side in the height direction of the inner circumferential surface of the main body, and then gradually longer toward the lower side from the central portion side.

The protruding portion is formed to gradually become smaller toward the central portion from the upper side in the height direction of the inner circumferential surface of the main body, and then gradually increases from the central portion to the lower side.

The rotation speeds of the main impellers and the sub impellers may be different from each other.

Rotation directions of the main impellers and sub impellers are characterized in that the opposite operation.

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

In addition, the compact complex soil cleaning system according to an embodiment of the present invention, there is an effect to improve the working environment by minimizing the moving distance of the operator while installing the components connected to each other at the optimum position.

In addition, the compact complex contaminated soil purification system according to an embodiment of the present invention, maximizing the friction cleaning power through the attrition rubber which always shows excellent friction cleaning performance irrespective of the degree of contamination of the contaminated soil introduced. There is.

In addition, the compact complex contaminated soil purification system according to an embodiment of the present invention, since the sub impellers overlapping the main impellers inside the attrition scrubber is installed between the main impellers, the effect of more smoothly friction cleaning There is an effect that can be evenly rubbed cleaning up to the soil of the outer portion of the treatment scrubber.

1 is a schematic view showing a compact complex soil cleaning system according to an embodiment of the present invention.
Figure 2 is a plan view showing a compact complex contaminated soil purification system according to an embodiment of the present invention.
Figure 3 is a view showing the attrition scrubber of the compact complex contaminated soil purification system according to an embodiment of the present invention.
FIG. 4 is an enlarged view of a portion of an attribution scrubber of the compact complex contaminated soil purification system according to the exemplary embodiment shown in FIG. 3.
FIG. 5 is an enlarged view of the attrition scrubber used in the compact complex contaminated soil purification system according to another embodiment of the present invention.
FIG. 6 is an enlarged view of the attrition scrubber used in the compact complex contaminated soil purification system according to another embodiment of the present invention.

Hereinafter, exemplary 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 contaminated soil purification system according to an embodiment of the present invention, Figure 2 is a plan view showing a compact complex contaminated soil purification system according to an embodiment of the present invention.

As shown in Figures 1 and 2, the compact complex contaminated soil purification system 10 according to an embodiment of the present invention, is disposed along the first direction (D1) to which the contaminated soil is supplied and the dewatered cake is discharged. Contaminated soil transport conveyor 100 to allow the contaminated soil to be transported in a quantitative manner; and the contaminated soil transported in one end of the contaminated soil transport conveyor 100 in the first direction (D1) by an axial rotation method to wash water. Mix washer 200 for spraying and cleaning; and wet to allow the soil to be less than a certain particle size in the contaminated soil provided at one end of the mix washer 200, and to prevent clean soil from passing through the soil to be more than a certain particle size. Vibration screening device 300; and, in the second direction (D2) for the clean gravel is discharged while crossing the contaminated soil transport conveyor 100, the central sector (SM) and the first peripheral sector ( Groups defining S1) Clean gravel discharge conveyor 400; and, disposed in the central sector (SM) of the system 10 to perform a particle size separation of the soil inlet from the wet vibration screening device 300 by wet than the first reference particle size A first hydro cyclone 500 for discharging small particles to the first a discharge port 511 and for discharging particles larger than the first reference particle size to the first b discharge port 521; The main body 610 is formed in the acid cleaner receiving portion 611 therein to form an external appearance so that heavy metals are eluted from the particles larger than the first reference particle size discharged from the first b outlet 521 of the hydrocyclone 500. Attrition scrubber 600 including the main friction cleaning unit 620 and the sub friction cleaning unit 630 provided in the; and the attribution scrubber 600 disposed adjacent to the attribution scrubber 600 Dehydrates the particles from the Vibration washing and dehydration apparatus 700 for generating a positive sand; and, along the second soil direction (D2) is the clean sand is discharged while crossing the contaminated soil transport conveyor 100 in parallel with the clean gravel discharge conveyor 400 A clean sand discharge conveyor 800 which is a reference for defining a central sector SM and a second peripheral sector S2 of the system 10; and a second peripheral sector S2 of the system 10 to vibrate. Particle size separation is performed on the soil that has passed through the washing and dehydration apparatus 700 to discharge particles smaller than the second reference particle size to the second outlet 211 and 911 to discharge particles larger than the second reference particle size to the second discharge port 921. A second hydro cyclone 900 to be discharged; and a first a outlet 511 of the first hydro cyclone 500 and a second a outlet 911 of the second hydro cyclone 900 disposed in the second peripheral sector S2. Sedimentation by receiving fine soil from And set in the second peripheral sector (S2), the sedimentation tank (1100) to be supplied to the sedimentation tank 1000 is not precipitated in the sedimentation tank 1000 to be precipitated to the bottom using a flocculant; and, the central sector (SM) A thickening tank 1200 disposed at the thrust tank 1000 and connected to the discharge end of the settling tank 1000 and the settling tank 1100 to store the sludge discharged to the settling tank 1000 and the settling tank 1100 and to generate gravity-separated concentrated sludge; And, the filter press 1300 disposed in the first peripheral sector (S1) discharged from the concentration tank 1200 flows in to discharge the water to produce the concentrated sludge as a dewatered cake to discharge in the first direction (D1) It characterized by including;

In the compact complex contaminated soil purification system 10 according to the embodiment of the present invention, the contaminated soil is supplied along the first direction D1 in the left and right directions with reference to FIG. 2 to be discharged to the side end of the system as a dewatered cake. The contaminated soil washed along the second direction D2 in the forward and backward directions causes the clean gravel or the clean sand to be discharged to the front end of the system 10.

First, the input hopper 110 disposed at the left end of the system 10 and supplied with contaminated soil has a structure in which a cross section becomes larger toward the upper side, 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 its characteristics, but it is possible to determine the time according to the degree of pollution in the post-process by grasping the degree of pollution.

The contaminated soil introduced into the mix washer 200 through the contaminated soil transport conveyor 100 is screened according to the desorption and particle size of the oil and heavy metal in the wet vibration screening apparatus 300. The wet vibration screening device 300 selects particles having a predetermined particle size or more (2mm to 40mm) and discharges them to the clean gravel through the clean gravel discharge conveyor 400, and passes only the particles having a predetermined particle size or less (2 mm or less) through the following. Proceed with the process.

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

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

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

The mix washer 200 may adjust the throughput of the contaminated soil by adjusting the rotational speed of the rotating shaft 220.

The washing water to be supplied is supplied from the process water reservoir 1400, as will be described later. The size of the mix washer 200 is about 4.56 m in length, 0.66 m in width and 0.72 m in height, and a drive motor for rotating the rotating shaft. Can use around 15 horsepower.

The soil washed from the mix washer 200 is input to the wet vibration sorting apparatus 300 to separate and sort the contaminated soil on the basis of the size of a predetermined particle size to generate and export clean gravel having a size of 2 mm to 40 mm.

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

Specifically, the wet vibration screening device 300, the first screening net 310 and the second wet vibration screening for screening the soil contaminated more than the first size in order to efficiently screen the first wet vibration, and the second wet vibration screening Of course, it may be configured to include a second screening net 320 having a second size relatively smaller than the first size to be installed in the lower portion of the first screening network 310, of course, wet vibration screening Particles that do not pass through the device 300 are screened through the clean gravel discharge conveyor 400 to produce a cleaning aggregate of size 2mm ~ 40mm.

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

Soil of a predetermined size or less passed through the wet vibration screening device 300 is supplied to the first hydro cyclone 500 disposed in the central sector SM of the compact complex soil cleaning system 10 through a pump P. Then highly sorted through the subsequent process.

The first hydro cyclone 500 performs particle size separation based on a first reference particle size in a wet manner, and the first hydro cyclone 500 is a hollow cone-shaped first taper part 510 and a first nozzle part ( 520, a first inlet 530 that enters in a tangential direction of a cylindrical shape, a first a outlet 511 connected to a wide inlet side of the first taper part 510, and a first nozzle part 520. It is composed of a first b outlet 521 connected to.

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

In this case, a difference in centrifugal force occurs due to the difference in weight of the particles, which causes particles having a larger particle size than the first reference particle size and particles having a smaller particle size than the first reference particle size to be separated from water.

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 521, where the first taper part 510 is disposed. By adjusting the length and the entrance area ratio at both ends, the soil can be separated 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 hydro cyclone 500 are supplied to the sedimentation tank 1000, and the first reference discharged through the first b discharge port 521. Particles larger than the particle size are supplied to the attribution scrubber 600.

FIG. 3 is a view showing an attribution scrubber of a compact complex contaminated soil purification system according to an embodiment of the present invention, and FIG. 4 is a view of a compact complex contaminated soil purification system according to an embodiment shown in FIG. A part of the treatment scrubber is enlarged.

As shown in FIG. 3 and FIG. 4, the attrition scrubber 600 according to the exemplary embodiment of the present invention has a first reference particle size separated and selected at the first b outlet 521 of the first hydro cyclone 500. In an arrangement for pickling large particles having a large particle size, the attrition scrubber 600 forms an exterior and has an acid cleaner containing an acid cleaner provided in the chemical tanks 21, 22, and 23 therein. 611 is provided with a main body 610, the main friction cleaning unit 620 disposed in the center of the main body 610 to perform the main friction cleaning for contaminated soil, and the main friction in the outer portion of the main body 610 The sub-friction cleaning unit 630 is disposed in parallel with the cleaning unit 620 to perform auxiliary friction cleaning on the contaminated soil, and continuously protrudes along the inner circumferential surface of the main body 610 to contaminate soil 610. Soil is prevented from escaping or scattering above and below It is configured to include a protrusion 640 to maximize the friction cleaning effect for.

Here, as shown in FIG. 2, the attrition scrubber 600 is continuously disposed in the central sector SM and the second peripheral sector S2 so that the first hydro cyclone 500 and the vibration washing and dehydration apparatus 700 are provided. So that the cleaning work of the contaminated soil can be carried out continuously.

The main body 610 may be formed of various shapes and materials to form an appearance of the attrition scrubber 600 of the compact complex contaminated soil purification system 10 according to an exemplary embodiment of the present invention. For example, the main body 610 may be formed in various shapes such as cylindrical, rectangular, square, and octagonal, and the main body 610 may be made of various materials such as steel, stainless steel, concrete, plastic, metal, ceramic, and the like. Can be done.

The inside of the body 610 is provided with an acid cleaner containing part 611 to accommodate the acid cleaner provided by the pump (P) in the chemical tank (21, 22, 23), which is contaminated in the acid cleaner receiving part (611) The high liquid ratio of the soil and cleaning agent may be added in a ratio of about 1: 1. In this case, the chemical tanks 21, 22, and 23 inject a cleaning agent including an acid cleaner into the body 610 of the treatment scrubber 600 to increase the solubility of contaminants including heavy metals and to increase the activity on the surface of soil particles. Desorption of the material may be induced.

Such chemical tanks (21, 22, 23) may be used for the cleaning of a variety of acid cleaners for efficient separation of contaminants, for example, the first chemical tank (21) containing a surfactant to increase the activity of the soil particle interface ), And a second chemical tank 22 containing a chelating agent for elution of heavy metal cations combined with soil particles to prevent recombination of soil particles and heavy metals, and to oxidize and decompose soil contaminants bound or desorbed. It may include a third chemical tank 23 containing the oxidant.

The main friction cleaning unit 620 is rotatably coupled to the upper surface of the central portion of the main body 610 and has main impellers 621 which perform main friction cleaning on the contaminated soil and extend along the height direction. 622 and the main drive motor 623 disposed on the upper surface of the main body 610 to provide a rotational force to the main drive shaft 622.

The main drive motor 623 may provide rotational force to the main drive shaft 622 and may control the rotation speed. The main drive shaft 622 is formed of an alumina material, and a plurality of main impellers 621 are radially provided at a lower end thereof, and are connected to the main drive motor 623 and rotated by the rotation of the main drive motor 623. These main impellers 621 mix and collide soil slurries with each other at the center of the acid detergent cleaner 611 to serve as friction grinding and dispersion.

Specifically, the main driving shaft 622 is rotatably coupled to the upper surface of the central portion of the main body 610 and the main impellers 621 radially provided on the main driving shaft 622 may be worn by friction between particles in the soil slurry ( oil and various heavy metals attached to the contaminated soil by attrition and breaking, as well as the oil and various heavy metals distributed inside the contaminated soil particles by friction crushing the soil slurry can be efficiently separated. Make sure Furthermore, the main impellers 621 induce a rise in temperature due to frictional heat caused by collisions with contaminated soil particles, thereby increasing the mobility of the low volatility oil pollutants. That is, the main impellers 621 generate frictional heat while simultaneously performing a first process of attrition to the soil soil by high-speed rotation and a second process of breaking soil, thereby generating the surface of the soil soil and Oil and various heavy metals distributed therein can be efficiently separated.

The sub friction cleaning unit 630 is rotatably coupled to the upper surface of the outer portion of the main body 610 and has sub impellers 631 to perform auxiliary friction cleaning on contaminated soil, and is parallel to the main drive shaft 622. The sub drive shaft 632 is formed to extend in the height direction, and the sub drive motor 633 is disposed on the upper surface of the main body 610 to provide rotational force to the sub drive shaft 632.

The sub drive shaft 632 is rotatably coupled to the upper surface of the outer portion of the main body 610, and the sub impellers 631 radially provided on the sub drive shaft 632 wear and destroy by friction between particles in the soil slurry. Not only can the oil and various heavy metals attached to the contaminated soil be efficiently separated, but also the oil slurry and various heavy metals distributed in the contaminated soil particles can be efficiently separated by triturating the soil slurry.

Here, the sum of the rotation radius R1 of the main impellers 621 and the rotation radius R2 of the sub impellers 631 may have a value greater than the separation distance L between the main drive shaft 622 and the sub drive shaft 632. In addition, the sub impellers 631 may be disposed to be positioned between the main impellers 621 and the main impellers 621 so as to prevent interference or collision with the main impellers 621.

In the treatment scrubber 600 according to the embodiment of the present invention, the main impellers 621 and the sub impellers 631 rotate simultaneously, so that the friction cleaning of the contaminated soil is efficiently performed. In particular, the main impellers 621 ) And the sub impellers 631 are superimposed so that a large friction cleaning force acts so that oil and various heavy metals distributed on the surface and the inside of the contaminated soil particles can be separated very efficiently.

In addition, since the sub-impellers 631 perform auxiliary friction cleaning on the contaminated soil located at the outer part of the main body 610, oils and various heavy metals distributed on the surface and inside of the contaminated soil particles are very high regardless of the position of the contaminated soil. Allow for efficient separation.

In addition, when the rotational speeds of the main impellers 621 and the sub impellers 631 are different from each other or the rotation directions thereof are reversed, the friction cleaning force may be further maximized.

The main body 610 further includes a protrusion 640 that protrudes continuously along the inner circumferential surface. The protrusion 640 is contaminated while maximizing mutual rotational friction between the main impellers 621 and the sub impellers 631. It will be able to maximize the friction cleaning power to the soil.

Here, the protrusion 640 is formed gradually smaller toward the central portion from the upper side in the height direction of the inner circumferential surface of the main body 610, and then gradually larger toward the lower side from the central portion, so that the contaminated soil is formed on the upper side of the main body 610. Or it can be gathered to the center height of the central portion or the outer portion in the direction of the main impellers 621 or the sub impellers 631 without being separated or scattered to the lower side can further maximize the friction cleaning effect of the soil.

The acid and water washed in the treatment scrubber 600 is supplied to the vibration washing dehydrator 700, the vibration washing dehydrator 700, the water from the acid-washed particles in the treatment scrubber 600 Dehydration to produce and export clean sand of 0.075mm ~ 2mm size through the clean sand discharge conveyor 800, or the remaining particles except the clean sand is supplied to the second hydro cyclone (900) through the pump (P) to follow-up process Allow this to proceed.

The clean sand discharge conveyor 800 is disposed in the second direction D2 parallel to the clean gravel discharge conveyor 400 and intersects with the contaminated soil transfer conveyor 100, and in particular, the compact complex contaminated soil purification system 10. It is used as a reference for defining the central sector SM and the second peripheral sector S2.

The fine soil which has passed through the vibration washing dewatering apparatus 700 is provided to the second hydro cyclone 900 disposed in the second peripheral sector S2 of the compact complex contaminated soil purification system 10. 900, the particle size separation is performed in a wet manner to discharge particles smaller than the second reference particle size to the second a discharge port 911 and discharge particles larger than the second reference particle size to the second b discharge port 921. In particular, the second hydro cyclone (900) has the same configuration as the first hydro cyclone (500) and performs particle size separation based on the second reference particle size, and the second hydro cyclone (900) is largely deceived. It consists of a hollow conical second taper portion 910 and a second nozzle portion 920, connected to the second inlet 930 entering in the tangential direction of the cylindrical, and the wide inlet side of the second taper portion 910 And a second b outlet 911 connected to the second nozzle part 920.

Particles smaller than the second reference particle size discharged to the second a outlet of the second hydro cyclone 900 are supplied to the immersion tank 1000, and particles larger than the second reference particle size discharged to the second b outlet 921 are vibrated and washed. The dehydration procedure may be performed again by the dehydration apparatus 700.

The fine soil discharged from the first a outlet 511 of the first hydro cyclone 500 and the second a outlet 911 of the second hydro cyclone 900 is divided into a second peripheral sector of the compact complex contaminated soil purification system 10. It is supplied to the immersion tank 1000 disposed in (S2).

Thus, the fine soil and washing water below the first and second standard particle sizes passing through the first and second hydro cyclones (500,900) 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 soil precipitated in the lower part of the sedimentation tank 1000 is supplied to the concentration tank 1200 disposed in the central sector (SM) of the compact complex contaminated soil purification system, and the remaining non-sedimented ultrafine soil and supernatant are compact. It is supplied to the settling tank 1100 disposed in the second peripheral sector (S2) of the complex soil cleaning system (10).

In addition, the ultra-fine soil and washing water supplied to the settling tank 1100 aggregated and precipitated the ultra-fine soil by administering a flocculant to the settling tank 1100 and purifying the compact complex contaminated soil through the concentration tank 1200. 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 for reuse as washing water.

In this case, the coagulant is mixed with the washing water in the coagulant stirring tank 1110 disposed in the second peripheral sector S2 of the compact complex contaminated soil purification system 10 and introduced into the settling tank 1100. The flocculant may use an inorganic electrolyte or an organic polymer compound as a substance which causes the solid particles suspended in the liquid to aggregate and precipitate.

Meanwhile, the scum removing apparatus 1020 and the scum storing apparatus 1120 are connected to the sedimentation tank 1000 and the settling tank 1100 to remove scum discharged from the settling tank 1000 and the settling tank 1100, respectively. The scum removing device 1020, 1120 fills the wastewater from which the suspended solids are separated from the sedimentation tank 1000 and the sedimentation tank 1100, and injects air to remove the fine floating solids and oil floating on the top and the scum storage device 1030. 1130).

Here, the scum sent from the settling tank 1100 is introduced into the oil and 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 concentration tank 1200 is disposed in the central sector SM of the compact complex contaminated soil purification system and disposed in the second peripheral sector S2 of the compact complex contaminated soil purification system 10. The fine soils supplied from 1100 are concentrated and transferred to the filter press 1300 disposed in the first peripheral sector S1 of the compact complex contaminated soil purification system 10.

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

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

Meanwhile, water from which oil is separated from the oil / water separation tank 1140 is supplied to the process water storage tank 1400, and the process water storage tank 1400 is treated with the mix washer 200 and the wet vibration sorting device 300. Water is supplied to the scrubber 600 and the vibration washing and dehydration apparatus 700, and the supplemental water storage tank 1500 for replenishing water so that the water in the process water storage tank 1400 has a predetermined level is provided in the process water storage tank 1400. Connected.

Here, the first hydro cyclone 500 of the compact complex contaminated soil purification system 10 according to an embodiment of the present invention, the concentration tank 1200, the oil and water separation tank 1140, the process water storage tank 1400, supplement water storage tank 1500 is disposed in the central sector SM, and the second hydro cyclone 900, the vibration washing and dehydrating apparatus 700, the immersion tank 1000, and the settling tank 1100 are disposed in the second peripheral sector S2. Contaminated soil is introduced into the dewatered cake discharged from the filter press 1300 by disposing the filter press 1300 in the first peripheral sector S1 while minimizing the site installation site by placing the components connected to each other in an optimal position. In addition to allowing the discharge to flow in the same direction, the washed clean sand and the clean gravel are discharged to the front of the system 10 separately from the dehydrated cake to allow efficient management and operation, while simultaneously processing soil contaminated with oil and heavy metals. It is made possible.

In addition, the compact complex contaminated soil purification system 10 according to an embodiment of the present invention, there is an effect to improve the working environment by minimizing the moving distance of the operator while installing the components connected to each other in the adjacent position. .

Another embodiment of the present invention will be described with reference to FIG. In the case of showing the same components as in the above-described embodiment, the same reference numerals are given, and the description thereof is omitted. FIG. 5 is a view showing an attribution scrubber of a compact complex contaminated soil purification system according to another embodiment of the present invention. FIG.

As shown in Figures 1 and 5, the treatment scrubber 600a according to another embodiment of the present invention, the acid cleaner containing part 611 that forms the appearance and the acid cleaner provided in the chemical tank is contained therein A main body having a main impeller 621 rotatably coupled to an upper surface of the central part of the main body 610 and having a main friction cleaning for contaminated soil, and extending along a height direction. A main friction cleaning unit 620 including a drive shaft 622 and a main drive motor 623 disposed on an upper surface of the main body 610 to provide rotational force to the main drive shaft 622; A sub-drive shaft which is rotatably coupled to the outer lower surface and has a sub impeller 631a disposed at a position facing the main impellers 621 to perform auxiliary friction cleaning of contaminated soil, 632 a), a sub-drive motor 633a disposed on the lower surface of the main body 610 to provide rotational force to the sub-drive shaft 632a, and a sub-drive shaft 632a for transmitting the rotational force of the sub-drive motor 633a. Sub frictional cleaning unit 630a including an intermediate member 634a; and continuously protrudingly formed along the inner circumferential surface of the main body 610 to prevent the contaminated soil from escaping or scattering above and below the main body. It is configured to include; a protrusion 640 for maximizing the friction cleaning effect.

Sub friction cleaning unit 630a of the attrition scrubber 600a according to another embodiment of the present invention, the sub friction cleaning unit 630a is disposed on the surface of the position facing each other the main friction cleaning unit 620 The sub-friction cleaning unit 630a is rotatably coupled to the outer lower surface of the main body 610 to perform frictional cleaning of contaminated soil. Sub-drive shaft 632a extending along the height direction, the sub-drive motor 633a disposed on the lower surface of the main body 610 to provide rotational force to the sub-drive shaft 632a, and the sub-drive motor 633a. And a mediating member 634a for transmitting the rotational force of the sub-axis to the sub drive shaft 632a.

The intermediate member 634a is provided with magnets 660 and 670 on the rear surface of the rotating plate 651 provided on the sub-drive shaft 632a and the surface of the driving plate 652 provided on the sub-drive motor 633a. The main body 610 is disposed above the driving plate 652 with a gap between the magnet 660 of the driving plate 652 and the magnet 670 on the surface of the driving plate 652, and driven by the sub-drive motor 633a. When the plate 652 is rotated, the rotational force is transmitted by the magnetic force so that the sub drive shaft 632a having the sub impellers 631a in the main body 610 rotates.

That is, the driving plate 652 provided at the front end of the sub drive motor 633a is rotated by the sub drive motor 633a, and the sub drive shaft 632a having the sub impellers 631a is attached to the ball bearing 680. It is possible to rotate by, a permanent magnet 660 made of a rare earth magnet or the like is provided on the surface of the driving plate 652 and the back of the rotating plate 651, respectively.

The main body 610 and the sub-drive motor 633a have a sub-drive motor 633 in a positional relationship in which the magnet 670 provided on the surface of the driving plate 652 and the magnet 660 provided on the back surface of the rotating plate 651 face each other. The main body 610 is provided in a non-contact state above the gap).

When operating the attrition scrubber 600a according to another embodiment of the present invention, the driving plate 652 is rotated by operating the sub-drive motor 633a. The rotational driving force generated by the magnetic force is generated by the magnet 670 rotating together with the rotation of the driving plate 652, and is transmitted to the magnet 660 through the wall of the main body 610, and the sub impellers through the rotating plate 651. The sub drive shaft 632a having 631a is rotated.

Accordingly, the attrition scrubber 600a according to another embodiment of the present invention transmits the rotational driving force by the magnetic force from the outside of the main body 610 to have the sub-drive shaft 632a having the sub impellers 631a inside the main body 610. Since it is necessary to provide a through hole through which the sub-drive shaft 632a penetrates the wall of the main body 610, the main body 610 can be made into a sealed structure, and the soil outside the main body 610 can be rotated. It is possible to completely eliminate the leakage of the slurry.

Another embodiment of the present invention will be described with reference to FIG. In the case of showing the same components as in the above-described embodiment, the same reference numerals are given, and the description thereof is omitted. FIG. 6 is a view illustrating an attribution scrubber of a compact complex contaminated soil purification system according to another embodiment of the present invention.

As shown in Figures 1 and 6, the attrition scrubber 600b according to another embodiment of the present invention, the external appearance of the acid cleaner provided in the chemical tanks (21, 22, 23) is contained therein The main body 610 is provided with an acid cleaner receiving portion 611 is rotatably coupled to the upper surface of the central portion of the main body 610 has a main impeller 621 to perform the main friction cleaning for contaminated soil height A main friction cleaning unit 620 including a main drive shaft 622 extending along a direction and a main drive motor 623 disposed on an upper surface of the main body 610 to provide rotational force to the main drive shaft 622. And a sub friction cleaning unit 630b formed along the inner circumferential surface of the main body 610 and including a plurality of sub blades 630b for performing subsidiary friction cleaning of contaminated soil; and on the inner circumferential surface of the main body 610. Lead every formed sub-blades 630b It is formed ever projecting is configured to include a projection (640) to maximize the cleaning effect of friction of the soil so contaminated by soil contamination is not leaving or scattering in the lower part of the main body 610. The

The sub friction cleaning unit 630b of the attrition scrubber 600b according to another embodiment of the present invention includes sub blades 630b provided on the inner circumferential surface of the main body 610.

That is, the attrition scrubber 600b according to another embodiment of the present invention further includes sub blades 630b that protrude continuously along the inner circumferential surface of the main body 610. These sub blades 630b are provided. The maximal mutual frictional friction with the main impellers 621 is to perform an auxiliary friction cleaning of contaminated soil.

The sub blade 630b of the attrition scrubber 600b according to another embodiment of the present invention is formed gradually shorter from the upper side to the center side in the height direction of the inner circumferential surface of the main body 610, and then again from the center side to the lower side. It is gradually formed long so that the contaminated soil can be gathered toward the center of the central portion in the direction of the main impeller 621 without being separated to the upper side or the lower side of the main body 610 can further maximize the friction cleaning effect of the contaminated soil. .

As described above, the compact complex contaminated soil purification system according to an embodiment of the present invention is partitioned by each component connected to each other to minimize the site installation site and to efficiently manage and minimize the moving distance of the operator. It can be seen that the basic technical idea is to improve the working environment. Accordingly, of course, many other modifications are possible to those of ordinary skill in the art within the scope of the basic technical idea of the present invention.

10 ... compact complex contaminated soil purification system 100 ... contaminated soil transfer conveyor
200 ... Mix Washer 300 ... Wet Vibration Separator
400 ... Clean Gravel Discharge Conveyor 500 ... First Hydro Cyclone
600 ... Attrition Scrubber 700 ... Vibration Cleaning Dehydrator
800 ... Clean Sand Discharge Conveyor 900 ... 2nd Hydro Cyclone
1000 ... Sedimentation Tank 1100 ... Sedimentation Tank
1200 ... concentration tank 1300 ... filter press
1400 ... process water reservoir 1500 ... supplemental water reservoir

Claims (10)

A contaminated soil transport conveyor disposed along a first direction in which the contaminated soil is supplied and the dewatered cake is discharged so that the contaminated soil is conveyed quantitatively;
A mix washer disposed at one end of the contaminated soil transfer conveyor to spray and wash the washing water while transferring the contaminated soil supplied in a first direction in an axial rotation manner; and
Wet vibrating screening device to allow the soil of less than a certain particle size in the contaminated soil supplied from one end of the mix washer and to pass through the soil more than a certain particle size to create clean gravel; And,
A clean gravel discharge conveyor disposed along a second direction to intersect the polluted soil transfer conveyor to allow the clean gravel to be discharged and to define a central sector and a first peripheral sector of the system;
It is disposed in the central sector of the system to perform a wet particle size separation on the soil inflow from the wet vibration screening device to discharge the particles smaller than the first reference particle size to the discharge port 1a and the particles larger than the first reference particle size 1b A first hydro cyclone discharged to an outlet; and,
It is disposed adjacent to the first hydro cyclone to form an exterior so that heavy metals are eluted and acid washed in particles larger than the first reference particle size discharged from the first b outlet of the first hydro cyclone, and formed in an acid detergent receiver. Attrition scrubber comprising a main friction cleaning unit and a sub friction cleaning unit provided in the main body;
A vibration washing dehydration apparatus disposed adjacent to the attrition scrubber to dehydrate water from the particles discharged from the attrition scrubber to generate clean sand;
A clean sand discharge conveyor arranged along a second direction in which the clean sand is discharged while crossing the contaminated soil transfer conveyor parallel to the clean gravel discharge conveyor, the clean sand discharge conveyor serving as a reference defining a central sector and a second peripheral sector of the system;
Particle size separation is performed on the soil which is disposed in the second peripheral sector and passed through the vibration washing and dehydration device to discharge particles smaller than the second reference particle size to the second outlet, and particles larger than the second reference particle size to the second discharge port. A second hydro cyclone discharged to the; and,
An immersion tank disposed in the second peripheral sector to receive fine soil from the first a outlet of the first hydro cyclone and the second a outlet of the second hydro cyclone to allow gravity of the fine soil to settle to the bottom;
A sedimentation tank disposed in the second peripheral sector so as to receive fine soil not precipitated in the sedimentation tank and settle to the bottom by using a flocculant; and
A concentrating tank disposed in the central sector and connected to the discharge ends of the settling tank and the settling tank to store sludge discharged to the settling tank and the settling tank and to generate gravity separated concentrated sludge; and
And a filter press disposed in the first peripheral sector, in which the concentrated sludge discharged from the thickening tank flows in and discharges water to produce concentrated sludge as a dewatered cake and to discharge the sludge in the first direction.
The attrition scrubber is,
A body having an acid cleaner containing an acid cleaner provided in the medicine tank therein to form an exterior; and
A main drive shaft rotatably coupled to an upper surface of the central part of the main body, the main drive shaft having main impellers for performing main friction cleaning on contaminated soil, and extending along a height direction; A main friction cleaning unit including a main drive motor disposed at the;
A sub-drive shaft coupled to the outer lower surface of the main body so as to be rotatably extended in a height direction with sub impellers disposed at positions facing the main impellers to perform auxiliary friction cleaning of contaminated soil; A sub friction cleaning unit including a sub drive motor disposed on a lower surface of the main body to provide a rotation force to a drive shaft, and a media member for transmitting the rotation force of the sub drive motor to the sub drive shaft;
Compact projections comprising a; protruding portion is formed along the inner circumferential surface of the main body to maximize the friction cleaning effect on the contaminated soil by preventing contaminated soil is separated or scattered to the upper and lower parts of the main body; Soil purification system. The method of claim 1,
The compact complex contaminated soil purification system,
An oil and water separation tank disposed adjacent to the sedimentation tank and disposed in the central sector and disposed adjacent to the sedimentation tank to separate the oil contained in the air bubbles introduced from the sedimentation tank;
A process water storage tank disposed in the central sector to supply water from which oil is separated from the oil / water separation tank to supply water to the mix washer, the wet vibration screening device, the attrition scrubber, and the vibration washing dewatering device;
And a replenishment water storage tank disposed in the central sector and replenishing water such that the water in the process water storage tank is at a constant water level. delete delete delete The method of claim 1,
The intermediate member,
Magnets are installed on the rear surface of the sub impeller disposed at the bottom of the sub impellers and the surface of the driving plate provided in the sub driving motor, so that the magnets on the rear surface of the sub impellers and the magnets on the surface of the driving plate face each other. When the main body is disposed above the driving plate and the driving plate is rotated by the sub-drive motor, rotational force is transmitted by magnetic force so that the sub-drive shaft having the sub-impellers inside the main body rotates. Compact complex contaminated soil purification system, characterized in that. delete The method of claim 1,
The projecting portion is a compact complex soil cleaning system, characterized in that formed in the height direction of the inner circumferential surface of the main body gradually from the upper side toward the smaller and then gradually larger toward the lower side from the center side. The method of claim 1,
Compact and complex soil cleaning system, characterized in that the rotational speed of the main impeller and the sub impeller has a different rotation speed. The method of claim 1,
The compact impurity soil purification system, characterized in that the rotation direction of the main impeller and the sub impeller is operated opposite to each other.

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