CN217700633U

CN217700633U - Module type cleaning device for soil purification

Info

Publication number: CN217700633U
Application number: CN202220877419.5U
Authority: CN
Inventors: 李在元; 俞景珉
Original assignee: Jiuene Corp
Current assignee: Jiuene Corp
Priority date: 2021-04-29
Filing date: 2022-04-15
Publication date: 2022-11-01
Anticipated expiration: 2032-04-15
Also published as: CN114733893A; KR102395666B1; CN114733893B

Abstract

The utility model discloses a module type belt cleaning device for soil purification includes: an input screening unit for cleaning and screening the input contaminated soil; a transfer unit for transferring contaminated soil; a cleaning unit for spraying high-pressure water to the contaminated soil to remove contaminants; a contaminated soil separation section for stirring contaminated soil, separating contaminated materials and purified soil, and discharging only purified soil; and a discharge unit that transfers the purified soil, the input screening unit including: a vibration hopper which forms a feeding path and is formed to be gradually narrowed from an upper portion to a lower portion; a body connected to the vibration hopper, one end of the body being arranged higher than the other end; a screening screen for screening contaminated soil having a predetermined particle size or less; a nano-bubble injection member that injects water into contaminated soil to induce pre-peeling; and an ultrasonic oscillator for generating acoustic cavitation and for previously removing contaminants by using impact energy when the bubbles are collapsed.

Description

Module type cleaning device for soil purification

Technical Field

The present invention relates to a module type cleaning device for soil purification, and more particularly, to a module type cleaning device for soil purification, which continuously performs processes such as screening, transferring, cleaning, and classifying on contaminated soil, using a plurality of modular structures, thereby effectively removing foreign matter or contaminants including fine particles in contaminated soil and improving cleaning efficiency.

Background

In general, environmental pollution can be classified into air pollution, water pollution, and soil pollution, and among them, soil pollution not only poses a serious threat to grain production, but also induces pollution of drinking water sources due to pollution of surface water and ground water, and thus, it is necessary to purify polluted soil in an early time.

Recently, soil pollution in korea has been caused mainly by accidents of liquid waste such as non-end landfill or leakage, and also by underground diffusion of above-ground piled materials placed during long-term industrial activities.

The contaminated soil generated by such generation factors is generated from various chemical species, not from a single kind of compound, and the representative combined pollution is the form of oils and heavy metals, which are generated in most industrial activity areas.

On the other hand, as methods for restoring contaminated soil, there are classified into physicochemical methods such as soil washing, incineration, solidification, stabilization, solvent extraction, and the like, and biological methods such as soil cultivation, compounding, biological aeration (bioventuring), plant restoration, and the like, and among these various methods, a soil washing method is a method capable of restoring contaminated soil relatively rapidly.

The method for cleaning contaminated soil is a method of separating or removing a pollutant present by hydrophobic bonding by separating or dissolving a harmful organic pollutant bonded to soil particles, or an inorganic pollutant such as heavy metal by adsorbing, coprecipitating or the like by dissolving or peeling the pollutant present on the soil surface, using water or an appropriate cleaning agent (organic substance: surfactant, inorganic substance: inorganic acid or organic acid).

However, the above washing is performed in the order of charging, screening, elution, neutralization, water treatment, and sludge dewatering, and the solid-to-liquid ratio in the screening and elution processes is 1:3 or more, and thus, in particular, in the case of contamination having a concentration of a certain level or more, since removal efficiency is low only with water and contaminated soil is reacted with a cleaning solvent, a stirring time of 30 minutes is required, and thus, there are limitations of continuous treatment and excessive chemical costs, and disadvantages associated with costs for neutralizing soil affected by chemicals, and also, with the application of a strong cleaning solvent, there are disadvantages of damage to soil health and influence on plant growth.

In contrast, in the case of using only water for separation and removal of contaminants, as described above, the solid-to-liquid ratio is 1:3 or more, the number of water treatment facilities becomes too large, and if there is contamination of a predetermined concentration or more, it is difficult to expect purification efficiency, and particularly, in the case where there are both organic contaminants and inorganic contaminants, there is a limitation in simultaneous application because different cleaning solvents are applied.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a module type belt cleaning device for soil purification, it utilizes a plurality of structures of modularization, to drop into vibrating hopper by contaminated soil screening in succession, transfer, process such as washing, separation to improve the cleaning efficiency when getting rid of foreign matter or polluting substances, simultaneously, will be contaminated soil and the ratio of water be suitable for 1:2 or less, a physical treatment technique is provided which reduces the amount of chemicals used, the amount of waste liquid treatment, and the amount of water treatment, and which does not have a problem with soil health, by using only a cleaning solvent or water at a level at which neutralization is not required as a cleaning solution.

In order to achieve the purpose, the utility model adopts the following technical scheme.

The utility model discloses a module type belt cleaning device for soil purification includes: an input screening unit for cleaning and screening the input contaminated soil; a transfer unit for transferring the contaminated soil discharged from the input screening unit; a cleaning unit for spraying high-pressure water to the contaminated soil transferred along the transfer path of the transfer unit to remove contaminants from the contaminated soil; a contaminated soil separation unit that stirs the contaminated soil discharged from the cleaning unit, separates the contaminated materials and the purified soil stripped from the contaminated soil, and selectively discharges only the purified soil; and a discharging unit that transfers the purified soil discharged from the contaminated soil separation unit along a discharging path.

Further, the input screening unit may include: a vibrating hopper which forms a contaminated soil input path and has a shape that is narrower from the upper portion toward the lower portion; a body; a vibrating hopper connected to the frame, one end of the vibrating hopper being disposed higher than the other end of the vibrating hopper to move contaminated soil discharged from the vibrating hopper; a screening screen disposed inside the body for screening contaminated soil having a predetermined particle size or less; a plurality of nanobubble jet members provided toward the sieving screen, for jetting water to contaminated soil to induce pre-stripping by nanobubbles; and an ultrasonic vibrator for generating acoustic cavitation to the contaminated soil moving through the sieving screen and for previously removing the contaminants by using impact energy generated when the bubbles are broken.

The nano-bubble injecting means may inject nano-bubble water by injecting water 2 times or less as much as the contaminated soil in the main body.

The transfer unit may be configured to transfer the nano-bubble water and the contaminated soil by previously peeling off the contaminated material of the contaminated soil toward the cleaning unit by a transfer screw provided in the transfer path.

Also, the cleaning part may include: a surface separation section formed by reducing the diameter from the inlet side, for generating a cavity bubble to the contaminated soil discharged from the transfer section, separating the contaminated soil from the contaminated material by using impact energy generated during the generation and rupture of the cavity bubble, and generating shear stress and vertical stress by high-speed and high-pressure water flow to separate the contaminated material; a first collision zone formed by expanding the inner diameter of the end of the surface peeling zone, wherein the fluid passing through the surface peeling zone generates turbulence due to pressure change, thereby generating collision between particles; and a second collision section for allowing the contaminated soil to pass through the first collision section and then collide with the collision member, thereby further separating the contaminated materials.

The cleaning unit may further include an ultrasonic transducer provided in the first collision zone to generate acoustic cavitation, thereby additionally separating contaminants by using impact energy generated when bubbles are broken.

And, the contaminated soil separation part may include: a soil settling member for allowing the contaminated soil discharged from the cleaning unit to flow therein, the soil settling member including an agitator therein for discharging contaminated soil having a particle size of a predetermined interval or more; a waste water discharge member connected to one side of the soil settling member, for discharging waste water contained in the contaminated soil flowing into the soil settling member; and a contaminated gas discharge part connected to the other side of the soil settling part, for sucking and discharging the contaminated gas of the soil settling part.

The contaminated soil separation section may further include a fine bubble generator provided at a lower inclined surface having a narrowed diameter in the soil settling member to supply fine bubbles to the surface of the contaminated soil.

Also, the contaminated gas discharge means may include: a main body having a suction port for moving the contaminated gas of the soil settling member; a turbo blower installed inside the main body and allowing a contaminated gas to flow into the main body through the suction port; and activated carbon purifying a polluted gas flowing into the main body through the turbo blower.

Further, the magnetic screening apparatus may further include a magnetic screening unit including: a magnetic body having one end connected to the cleaning part, having a guide member for guiding the movement of the cleaning soil and allowing the purified soil to flow therein, and having magnetic mineral contaminants contained in the cleaning soil guided by the guide member;

a cylindrical magnetic member provided at an end of the guide member, for separating metals contained in the purified soil flowing into the guide member and storing the separated metals; and a driving member provided on an outer side surface of the guide member for changing an angle of the guide member to provide a driving force to discharge the mineral-like contaminant having magnetism separated by the cylindrical magnetic member through a magnetic discharge port.

The utility model has the following effects.

The utility model discloses has following effect: utilize and carry out processes such as screening, transfer, washing, separation in succession to throwing into the contaminated soil of vibration hopper to carry out a plurality of structures of modularization to improve the cleaning efficiency when getting rid of foreign matter or polluting substances, simultaneously, be suitable for the ratio of contaminated soil and water as 1:2 or less, a physical treatment technique is provided which reduces the amount of chemicals used, the capacity for waste liquid treatment and water treatment, and which does not have a problem with soil health, by using only a cleaning solvent or water at a level which does not require neutralization as a cleaning solution.

Furthermore, the utility model discloses following effect has: since a plurality of structures are modularized into one device, the facility can be simplified, and thus, the facility can be easily used in a mobile manner.

In addition, the utility model discloses in throwing into screening, transporting, cleaning process, use nanometer bubble water as the process water, utilize the energy that produces when nanometer bubble breaks, the guide is present in the stripping off in advance of polluting the pollutant on soil surface.

Furthermore, the utility model discloses has following effect: while the high-speed high-pressure water flow passes through the diameter change section, the first stripping of the pollutants is realized by the generation of cavitation bubbles (cavitation bubbles) based on shear force and decompression and impact energy generated in the rupture process, and simultaneously, the second stripping is realized by the impact applied to the surface of the polluted soil due to collision between the polluted soils and the turbulent flow generated by pressure relief along with the gradual expansion of the diameter, and finally, the third stripping is realized by the collision between the polluted soil and the surface of the flange, thereby realizing effective stripping only through a simple physical treatment process.

Further, the present invention has an effect that in the process of passing a high-speed high-pressure water flow through a rapid diameter change section, the contaminated soil on the surface of the contaminated soil is peeled off by using impact energy generated in the process of generating and breaking the hollow bubbles due to the reduction of the hydraulic pressure, and then, the collision between the contaminated soil particles is guided by turbulence generated in the process of releasing the pressure due to the change of the diameter, so that the secondary peeling is realized by using the collision force between the particles, and the third peeling is realized by using the collision force generated in the process of colliding with the final end collision member, thereby realizing the effective peeling only by a simple physical treatment process.

Therefore, the utility model discloses not contaminated material's kind and characteristic's restriction can carry out extensive processing to can enlarge the commonality that the device was suitable for, and, need not to use extra chemical, only accessible pure water removes contaminated material, consequently, can recycle washing water easily, thereby has the effect that can carry out economic processing.

Drawings

Fig. 1 is a view showing the overall structure of a module type cleaning apparatus for soil purification according to an embodiment of the present invention.

Fig. 2 is a view showing an input screening unit of a module type cleaning apparatus for soil cleaning according to an embodiment of the present invention.

Fig. 3 is a view showing a transfer part of a module type cleaning apparatus for soil cleaning according to an embodiment of the present invention.

Fig. 4 is a view showing a cleaning unit of a module type cleaning apparatus for soil cleaning according to an embodiment of the present invention.

Fig. 5 is a diagram showing a principle of removing contaminants from a cleaning unit of the module type cleaning apparatus for soil purification according to the embodiment of the present invention.

Fig. 6 is a view showing a contaminated soil separating part and a discharging part of the module type cleaning apparatus for soil purification according to the embodiment of the present invention.

Fig. 7 is a view showing a contaminated gas discharge part of the module type cleaning apparatus for soil purification according to the embodiment of the present invention.

Fig. 8 is a diagram showing a magnetic screening portion of a module type cleaning apparatus for soil purification according to an embodiment of the present invention.

Description of the symbols

100: input screening unit, 110, 302: hopper, 120: a main body, 130: screening net, 140, 141, 142, 510: nanobubble ejection member, 150: nanobubble generating device, 160: high-pressure water generating device, 170, 310: ultrasonic transducer, 200: transfer unit, 210: transfer screw, 300: cleaning section, 304: injection device, 306: peeling part, 320: collision member, 330: capture port, 340: purge drain, 400: contaminated soil separation section, 410: soil settling member, 412: stirrer, 420: waste water discharge part, 430: contaminated gas discharge means, 432: main body, 432a: suction port, 432b: connecting pipe, 434: turbo blower, 436: activated carbon, 440: micro-bubble generator, 500: discharge portion, 502: purified discharge port, 520: purified soil dewatering device, 600: magnetic screening portion, 610: magnetic body, 611: guide member, 612: non-magnetic discharge port, 620: cylindrical magnetic member, 621: cylindrical magnet, 622: scraper, 623: magnetic discharge port, 630: drive means, a: surface peeling interval, B: first collision zone, C: a second collision zone.

Detailed Description

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

The advantages and features of the present invention and the methods of accomplishing the same will become apparent from the following detailed description of the preferred embodiments and the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below, and can be realized in various forms different from each other, and the present embodiment is only to make the disclosure of the present invention more complete, and is provided for informing the scope of the present invention to the ordinary skilled person in the art completely, and the protection scope of the present invention is only defined by the claims.

In the course of the description of the present invention, when it is determined that there is a possibility that the gist of the present invention will be confused by related known techniques and the like, detailed description thereof will be omitted.

Fig. 1 is a view showing an overall configuration of a module type cleaning apparatus for soil purification according to an embodiment of the present invention, fig. 2 is a view showing a drop screening part of the module type cleaning apparatus for soil purification according to an embodiment of the present invention, and fig. 3 is a view showing a transfer part of the module type cleaning apparatus for soil purification according to an embodiment of the present invention.

Fig. 4 is a view illustrating a cleaning part of the module type cleaning apparatus for soil purification according to an embodiment of the present invention, and fig. 5 is a view illustrating a principle of removing contaminants from the cleaning part of the module type cleaning apparatus for soil purification according to an embodiment of the present invention.

And, fig. 6 is a view showing a contaminated soil separating part and a discharging part of a module type cleaning apparatus for soil purification according to an embodiment of the present invention, fig. 7 is a view showing a contaminated gas discharging part of the module type cleaning apparatus for soil purification according to an embodiment of the present invention, and fig. 8 is a view showing a magnetic force screening part of the module type cleaning apparatus for soil purification according to an embodiment of the present invention.

As shown in fig. 1, the module type cleaning apparatus for soil purification according to the present embodiment includes a loading and sorting unit 100, a transfer unit 200, a cleaning unit 300, a contaminated soil separating unit 400, a discharge unit 500, and a magnetic force sorting unit 600.

And, water sprayed from the module type cleaning apparatus for soil purification or water used as high pressure water may flow in from the nano bubble apparatus. In this case, the nano bubble apparatus forms nano bubbles in water, and the fine bubbles in water can contact the surface of soil, thereby removing fine foreign substances attached to the soil.

According to the modular cleaning apparatus for soil purification of the present embodiment, since a plurality of structures are modularized into one apparatus as described above, it is possible to simplify the equipment, and thus, the cleaning apparatus can be used conveniently in a mobile manner, and if necessary, the input screening part 100 can clean and screen the input contaminated soil in a plurality of modularized structures as described above. The modular device can be selectively and easily applied to additional equipment such as a nano bubble water generating device, a high-pressure water spraying device and the like.

For this, as shown in fig. 2, the input screening unit 100 includes a vibration hopper 110, a main body 120, a screening mesh 130, a nanobubble jet member 140, a nanobubble generator 150, a high-pressure water generator 160, an ultrasonic vibrator 170, and a magnetic member 180.

Further, the nano bubble injecting member 140 and the nano bubble generating apparatus 150 are provided in the input screening unit 100, so that water containing nano bubbles is injected at the same time of the input, thereby previously separating the contaminated soil passing through the input screening unit 100.

First, the vibrating hopper 110 forms a contaminated soil input path in a shape gradually narrowing from the upper portion to the lower portion, and this configuration can advantageously function when contaminated soil is input by a forklift or the like.

The main body 120 is connected to an outlet side of the vibration hopper 110, and one end is disposed higher than the other end so that contaminated soil put in through the vibration hopper 110 having the above-described shape moves along the inclined surface and is screened.

The sieving screen 130 is provided inside the body 120 to have a predetermined length, and discharges foreign materials and stones (gravels) having a predetermined particle size of not less than a predetermined particle size, for example, not less than 10 to 60mm, among the contaminated soil input to the body 120 to the outside, and sieves out gravels and soil having a predetermined particle size of not more than a predetermined particle size and discharges them to the other end portion disposed at a low position, thereby transferring only the gravels and soil having a predetermined particle size of not more than the sieved particle size to a post-process for cleaning and restoring the soil.

The nano bubble injection member 140 is provided in plurality to face the upper surface of the sieving screen 130, and injects water such as nano bubble water to the moving contaminated soil.

The nano-bubble spraying means 140 is connected to the nano-bubble generating means 150, and the nano-bubble spraying means 140 sprays the nano-bubble generated by the nano-bubble generating means 150, and the nano-bubble generating means 150 injects nano-bubble water to previously strip the contaminants on the surface of the contaminants by the energy generated when the nano-bubbles are broken.

Also, the nano bubble spraying part 140 may be provided with an additional flow meter (not shown) to measure the flow rate of the washing water sprayed to the contaminated soil, and may be selectively adjusted to a minimum flow rate value capable of securing a screening effect.

Also, the nano bubble spraying part 140 may spray the washing water containing the nano bubbles at a rate less than 2 times the amount of the contaminated soil.

In this case, the nano bubble spraying member 140 may include a vertical spraying member 141 and a horizontal spraying member 142 to spray water containing nano bubbles to the inside of the body 120 and to prevent soil, foreign materials, etc. from being accumulated in the body 120.

The nano bubble spraying member 140 sprays water (washing water) containing nano bubbles to the sieving screen 130 in an amount corresponding to a set spraying amount, more preferably, in the same amount as the contaminated soil put into the body 120, that is, in an amount of less than 1:2 was sprayed with water.

If a strongly acidic cleaning agent is used instead of water for removing contaminated soil, not only the reaction time of the acid and the contaminant is required, but also the amount of additional chemicals, water, and the like to be added for neutralizing the acid component is increased.

In this case, the amount of waste water to be discarded is increased, and in the present embodiment, since only water is used for the purpose of separation, the discharged water can be reused, and the amount of water to be added together with the contaminated soil at that time is also added at the same rate as the contaminated soil, and therefore, the amount of difficult waste water to be used for separation can be reduced finally.

The plurality of vertical spraying members 141 may be provided to be spaced apart from each other, and may spray water from above the sieving screen 130 to below. At this time, the water may be water containing nano bubbles. Thereby, the soil, which flows into the inside of the body 120 and is mixed with foreign materials and the like passing through the sieving mesh 130, is discharged to the transferring screw member through the sieving mesh.

Also, the horizontal spray member 142 may be disposed at one side of the lower portion of the screening mesh 130. In this case, the spray direction of the horizontal spray part 142 may be installed in a direction perpendicular to the vertical spray part 141. Also, the horizontal spray member 142 may be disposed at a lower portion of the screening mesh 130. In addition, the horizontal spray member 142 may move foreign materials and soil to the other side. In addition, high pressure water may be discharged from the horizontal spray part 142.

This allows the contaminated soil screened by the screen 130 to move in the other direction, thereby preventing the screened contaminated soil from being stacked below the screen 130.

On the other hand, when the gravel and soil passing through the sieving screen 130 and having a size of 10 to 60mm or less are sieved and accumulated at the lower portion of the body 120, the sieving screen 130 may be provided with an ultrasonic vibrator 170 for generating acoustic cavitation (cavitation) to the contaminated soil which is input and moved.

The ultrasonic vibrator 170 is used for pre-peeling off the contaminated materials attached to the contaminated soil, generates acoustic cavitation in the sieving screen 130 during driving, and pre-peels off the contaminated materials existing on the surface of the contaminated soil by using the generation of the acoustic cavitation and the impact energy of the rupture generated at this time.

As shown in fig. 2, the input screening unit 100 of the present embodiment may further include a magnetic member 180 together with the above-described structure.

The magnetic member 180 is provided at the other end of the body 120 having an inclination, and removes foreign substances, which may remain in contaminated soil and are made of iron components such as screws and nails.

That is, the magnetic member 180 prevents the contaminated soil foreign matter screened by the screening mesh 130 from flowing into the rear end facility system and causing a failure, and removes molten iron such as nails, bolts, and nuts using a magnetic body before the screened contaminated soil having a predetermined particle size or less is discharged to the transfer unit 200, thereby implementing additional screening of the contaminated soil and preventing the rear end facility system from being failed and clogged.

A vibration member is attached to the main body 120 to generate vibration, and although not shown, the main body may include a motor, a vibration generator, and the like.

The vibration member is configured to convert a rotational motion into an oscillating motion in the vibration generating device receiving the driving force of the motor, and the vibration is transmitted to the body 120, and various conventional techniques can be applied to the vibration generating device converting the rotational motion into the oscillating motion, and thus, a detailed description thereof will be omitted.

The transfer unit 200 is used for transferring contaminated soil discharged from the input screening unit 100, and has a contaminated soil input port 202 and a contaminated soil discharge port 204, and contaminated soil on the input screening unit 100 discharged to the contaminated soil input port 202 is previously stripped by the operation of a transfer screw 210 provided on a moving rail 200a, transferred to the contaminated soil discharge port 204, and then may be input to the cleaning unit 300.

The transfer unit 200 transfers contaminated soil and water into the screening unit 100 in a ratio of less than 1:2, the cleaning part 300 can be transferred to be watertight when inclined at an angle of approximately 45 degrees by the rotation of the transfer screw 210 in a mixed state, and in particular, the pretreatment is performed before the cleaning part 300 performs cleaning by continuously peeling off the contaminants contained in the contaminated soil and inducing dissolution and removal while the cleaning part is moving by the transfer screw 210.

At this time, the nano bubbles enhance a contaminant peeling effect on the soil surface, thereby enhancing a pre-peeling effect as a pre-treatment.

That is, before entering the cleaning unit 300, contaminated soil and water containing nano bubbles are mixed, and the nano bubbles move to the cleaning unit 300 while cleaning the contaminated soil for the first time.

The cleaning unit 300 sprays high-pressure water containing nano bubbles onto contaminated soil transferred along the movement path and loaded into the hopper 302, thereby removing contaminants from the contaminated soil. For example, the cleaning part 300 may be an ejector. The vertical spraying part 141 and the washing part 300 may be selectively an injector so that high pressure water may be sprayed.

As shown in fig. 3, the cleaning portion 300 is provided with a surface peeling section a, a first collision section B, and a second collision section C along the longitudinal direction.

The hopper 302 is moved by the input screening unit 100 and the transfer unit 200 in a direction of less than 1:2, the contaminated soil and water are added together.

Here, the contaminated soil charged through the hopper 302 is sprayed with high-pressure water containing nano bubbles by the spraying device 304, thereby separating the contaminants.

Among them, the water injected at high pressure by the injection means 304 uses only a low concentration of acid or water within the buffering capacity of the soil, and particularly preferably, contains nano bubbles.

This is because, by using water containing nano bubbles in general for the purpose of stripping, rather than a fluid containing a separate cleaning agent for stripping as in the prior art, reuse of water (cleaning water) in the subsequent contaminant separation step becomes economical and easy.

Meanwhile, as shown in fig. 4, the peeling part 306 forms a moving path for contaminated soil, and is provided such that a flow rate of the contaminated soil moving together with water is increased in a state where contaminants are partially peeled by high-pressure water.

The peeling section 306 realizes continuous peeling of the contaminant adhered to the contaminated soil together with the high-pressure water jet apparatus 304 by using hollow bubbles generated with a structure in which the hydraulic pressure decreases when the high-speed and high-pressure water flow passes through the rapid cross-section reduction section.

For this reason, the peeling portion 306 is provided with a surface peeling section a, a first collision section B, and a second collision section C along the longitudinal direction.

First, in order to increase the flow velocity of the contaminated soil, the diameter of the surface separation zone a is sharply reduced from the inlet side, and shear stress and vertical stress are generated in the contaminated soil, thereby separating the contaminants.

That is, in the surface separation zone a, when the contaminated soil moves together with water, the diameter thereof becomes smaller, so that the pressure acting on the moving contaminated soil becomes higher, the pressure of the fluid becomes lower, and the flow rate becomes higher.

As shown in fig. 5, the effect of grinding (abrasion) and decomposition (dissociation) is generated together with the shear stress and the vertical stress, and the separation of the contaminants attached to the contaminated soil can be achieved.

No cavity bubble is generated in the first collision zone B, and turbulence is formed due to a change in pressure, thereby generating collision between contaminated soil particles so that contaminants adhered between the particles can be peeled off.

After passing through the second collision zone C, the secondary pollutants are separated by collision with the collision member 320 formed at the end portion.

In the second collision zone C, the volatilized pollutants are discharged to the outside, and the contaminated soil from which the pollutants have been removed is discharged to the contaminated soil separation unit 400.

For this purpose, the cleaning unit 300 includes a collection port 330 and a cleaning discharge port 340.

The trap port 330 is formed in the upper portion of the outlet side of the second collision zone C, and when the contaminant generated when the contaminant is detached by the rupture of the cavitation bubbles is a volatile contaminant, a trap path may be formed to trap the contaminant gas that may be generated during the detachment of the contaminant and evaporated and gasified.

The cleaning outlet 340 is formed at a lower portion of the outlet side of the second collision zone C, and forms a discharge path for discharging contaminated soil.

As described above, the cleaning slurry discharged through the cleaning discharge port 340 moves to the contaminated soil separation unit 400 so that the cleaning slurry can be separated into the purified soils according to the size of the particles.

Meanwhile, as described above, the cleaning unit 300 may further include the ultrasonic transducer 310 in order to generate more hollow bubbles in the process of detaching the contaminant by the collapse of the hollow bubbles.

That is, the ultrasonic transducer 310 is provided in the first collision zone B, and generates acoustic cavitation in the same manner as the ultrasonic transducer 170 introduced into the screening unit 100, thereby generating cavity bubbles in the first collision zone B, and more contaminants are effectively separated in the second collision zone C together with the collision energy generated at the time of collision by the structure of the collision member 320.

On the other hand, the contaminated soil separation unit 400 separates the contaminated soil and the purified soil peeled from the contaminated soil while agitating the contaminated soil discharged from the cleaning unit 300, and selectively discharges only the purified soil to the discharge unit 500.

Therefore, as shown in fig. 6, the contaminated soil separation unit 400 includes a soil settling member 410, a wastewater discharge member 420, and a contaminated gas discharge member 430.

The soil settling member 410 allows contaminated soil, which is discharged from the cleaning unit 300 and from which contaminants are removed, to flow therein, includes an agitator 412 therein, and discharges contaminated soil having a particle size of not less than a predetermined range to the discharge unit 500.

That is, in the case of the wastewater containing fine contaminant particles and contaminated soil discharged from the cleaning part 300, the soil is settled by the soil settling member 410 and discharged to the discharge part 500, and at this time, the contaminated soil having a particle size of 0.075mm to 0.15mm is set as a reference, the contaminated soil having a particle size of the above-mentioned interval or less is discharged to the wastewater discharge member 420, and the contaminated soil having a particle size of the above-mentioned interval or more is naturally settled and discharged to the discharge part 500.

For this, the waste water discharging member 420 is connected to one side of the soil settling member 410, and contaminated soil having a particle size adjusted by the operation of the agitator 412, that is, 0.075mm or less is discharged to the outside of the soil settling member 410.

In addition, contaminated soil containing contaminants including volatile substances may be discharged through the contaminated gas discharge part 430. In addition, a contaminated gas discharge part 430 is connected to the other side of the soil settling part 410, and sucks and discharges contaminated gas in the soil settling part 410 to collect volatilized contaminants generated during the operation of the agitator 412.

As shown in fig. 7, the contaminated gas discharging part 430 may include a main body 432, a turbo blower 434, and activated carbon 436.

The main body 432 has a suction port 432a for allowing the polluted gas existing inside the soil settling member 410 to move through a connection pipe 432b, and the main body 432 may have a box shape having a predetermined internal space in order to collect the polluted gas.

The turbo blower 434 is provided inside the body 432, and the contaminated gas inside the soil settling member 410 flows into the body 423 through the suction port 432a as the motor M is driven.

The activated charcoal 436 is provided in a layered manner to purify the polluted gas flowed into the main body 432 by the turbo blower 434, and the polluted gas flowed into the main body 423 by the turbo blower 434 is purified through the inside thereof, thereby effectively treating the polluted gas generated when the polluted soil is cleaned.

Here, although the activated carbon 436 is illustrated as being formed of two layers, the activated carbon 436 may be disposed in more layers in the vertical direction, without limitation, to more effectively treat the contaminated gas.

On the other hand, the contaminated soil separation part 400 may further include a micro bubble generator 440.

A plurality of fine bubble generators 440 (see fig. 6) are provided on a lower inclined surface having a narrowed diameter in the soil settling member 410 to supply fine bubbles to the surface of the contaminated soil to be stirred, thereby effectively floating the fine soil and preventing the fine soil with concentrated contamination from being discharged to the purified soil.

The fine bubble generator 440 is used to artificially adjust the particle size of the contaminated soil in the soil settling member 410 together with the agitator 412, and the contaminated soil adjusted to 0.075mm or less by the particle size adjustment as described above is discharged through the wastewater discharge member 420, and the contaminated soil between 0.075mm and 0.15mm is discharged to the cleaning unit 300 to be recovered by additional cleaning.

The discharging unit 500 transfers the purified soil discharged from the contaminated soil separation unit 400 along a discharging path.

The discharge unit (500) may have the same structure as the transfer unit (200) having the transfer screw (210), or may have another nano-bubble injection member (510) as shown in fig. 5, and may additionally wash the purified soil before discharging the purified soil through the purified soil discharge port (502).

Accordingly, the discharge part 500 finally performs cleaning at the end thereof to discharge the purified soil, so that the contaminated soil can be economically treated by screening, cleaning, separation, purification, and the like, and finally the contaminated soil can be effectively reused.

Further, a purified soil dehydration device 520 for dehydrating the discharged purified soil may be provided below the portion where the discharge part 500 is formed. The purified soil dehydration apparatus 520 can dehydrate water mixed with the purified soil that is discharged from above and drops to remain finely.

In this case, the purified soil dehydration device 520 may be provided with a dehydration member (not shown) for vibrating the inside thereof, so that the moisture of the purified soil can be removed by the vibration of the dehydration member (not shown).

Accordingly, the purified soil dehydration device 520 dehydrates the water remaining in the purified soil, thereby removing contaminants that may be contained in the water, improving the purification efficiency of the purified soil, and improving the quality of the purified soil.

That is, the purified soil dehydration device 520 is provided with a water treatment for precipitating fine particles present in wastewater and reusing the wastewater as process water and a sludge dehydration unit for dehydrating the fine particles precipitated in the water treatment, thereby being capable of reusing the process water while dehydrating the water.

Further, a final dehydration device may be provided, which removes pollutants existing in the wastewater by finally dehydrating the discharged purified sand, thereby improving purification efficiency and purifying efficiency of the contaminated sand.

Fig. 8 is a view illustrating a magnetic screening part of the module type cleaning apparatus for soil purification according to an embodiment of the present invention.

Referring to fig. 8, the magnetic screening portion 600 may be connected to the washing discharge port 340 of the washing portion 300 so that soil purified from above may flow in and be discharged downward. The magnetic force screening unit 600 can improve the quality of the purified soil by magnetically sorting the magnetic contaminants in the purified soil, which are bound to Fe and have magnetic properties by the magnetic force sorting.

The magnetic force screening unit 600 may further include a cylindrical magnetic member 620, and a driving member, wherein the cylindrical magnetic member 620 adheres to the Fe-bonded mineral contaminated soil included in the clean soil flowing in, and is configured such that 1/2 area of the cylinder has magnetism and 1/2 area has no magnetism, so that the adhered mineral contaminants are smoothly discharged by the rotation of the cylinder and the magnetic scraper 622, and the driving member provides a driving force to rotate the cylinder.

The magnetic force screening part 600 may further include a magnetic body 610, a cylindrical magnetic member 620, and a driving member 630 to effectively separate Fe-bound pollutants and non-Fe-bound pollutants from mineral pollutants, from which the pollutants are not removed only by surface separation of the soil, when discharging the inflow purified soil, thereby improving purification quality.

The magnetic body 610 may be formed in a quadrangular cross section. Also, the inside of the magnetic body 610 may be formed with a hollow portion. The upper part is connected to the cleaning outlet 340 of the cleaning part 300 so that the purified soil can flow in.

At this time, the magnetic body 610 may include a guide member 611 and a non-magnetic discharge port 612 therein, and the guide member 611 and the non-magnetic discharge port 612 move the purified soil so that the purified soil flows into and adheres to the Fe-bonded mineral contaminated soil contained in the purified soil and is discharged.

The guide member 611 may be formed in a plate shape. Also, the guide part 611 may be formed to extend from the left side to the right side of the magnetic body 610. In this case, the plurality of guide members 611 may be spaced apart from each other. The initial guide member 611 is provided below the inflowing purified soil and moves the inflowing purified soil to the right side.

Further, a second guide member 611 spaced apart from the initial guide member 611 may be installed below the initial guide member 611. At this time, the second guide part 611 may be connected to the inner side surface of the magnetic body 610 and extend in a left direction.

That is, the guide member 611 may guide the inflow purified soil to move left and right. At this time, the nonmagnetic discharge port 612 is provided at the lower end portion of the magnetic body 610, so that the purified soil from which the metal foreign matters are separated can be discharged downward. Further, the cylindrical magnetic member 620 may be coupled to an end of the guide member 611.

The cylindrical magnetic member 620 may be provided with a cylindrical magnet 621 having a magnetic force at a central axis thereof, and may separate the Fe-bonded type mineral contaminated soil contained in the purified soil, which may be mixed with the purified soil.

Further, one surface of the cylindrical magnetic member 620 has magnetism, and the other surface thereof has non-magnetism, and the mineral contaminated soil in a bonded form adheres to the magnetic portion, and the mineral contaminated soil can be discharged to the outside by the rotation of the cylindrical magnetic member 620.

Further, a magnetic blade 622 may be provided at one side of the cylindrical magnetic member 620 to be spaced apart from the cylindrical magnetic member 620.

The magnetic scraper 622 can downwardly separate the mineral contaminated soil attached to the cylindrical magnet 621. At this time, the separated foreign materials of the metal material may be discharged through the magnetic discharge port 623 formed at the lower end portion of the magnetic body 610.

The driving member 630 may be connected with the guide member 611 extending to the magnetic discharge port 623. Further, the driving member 630 may move left or right, thereby changing the angle of the plurality of guide members 611. Thereby, the contaminated soil on the minerals can be discharged through the magnetic discharge port 623.

The utility model discloses has following effect: utilize and carry out processes such as screening, transfer, washing, separation in succession to throwing into the contaminated soil of hopper to carry out a plurality of structures of modularization to improve the cleaning efficiency who gets rid of the foreign matter or by the pollutant matter, on the other hand, the ratio of contaminated soil and water is suitable for and is less than 1:2, a physical treatment technique which can reduce the amount of chemicals used, the capacity of waste liquid treatment and water treatment, and which does not cause a problem in the health of soil, by using only a cleaning solvent or water at a level which does not require neutralization as a cleaning solution.

Further, when the nano-bubble generating device is used in combination with the purification of contaminated soil, the efficiency of purifying contaminated soil and the efficiency of purifying fine contaminants that have adhered to the contaminated soil can be improved by using water that generates nano-bubbles in all the water used.

Furthermore, the utility model discloses following effect has: since a plurality of structures are modularized into one device, the apparatus can be simplified, and thus, the apparatus can be easily used in a mobile manner.

Further, the present invention has an effect that, while the first separation of the contaminated material is realized by injecting high-pressure water and increasing the flow rate, when the contaminated soil containing high-speed and high-pressure water passes through a rapid diameter change section, the hydraulic pressure is reduced, at this time, the separation of the contaminated material is realized by the impact energy applied to the surface of the contaminated soil due to the rupture of the generated cavity bubbles, and thereafter, the second separation is realized by the impact force of the collision between the contaminated soil particles due to the turbulent flow generated in the pressure release section, and the second separation is realized by the impact force when the collision with the terminal collision plate, so that the effective separation is realized only by a simple physical treatment process.

The utility model discloses at the input screening and transfer in-process, peel off the pollutant in advance through nanometer bubble water.

Furthermore, the utility model discloses following effect has: the first stripping of the contaminated materials is achieved by spraying high-pressure water and increasing the flow rate, while the contaminated soil containing water is depressurized, and the second stripping is achieved by the impact applied to the surface of the contaminated soil due to the collapse of the hollow bubbles generated thereby, thereby achieving effective stripping only through a simple physical treatment process.

The present invention has been described above with reference to the embodiments shown in the drawings, but these are merely illustrative, and various modifications can be made by those skilled in the art to which the present invention pertains, and it is to be understood that all or a part of the above-described embodiments may be selectively combined to form the present invention. Therefore, the true technical scope of the present invention should be determined by the technical idea of the appended claims.

Claims

1. A module type cleaning device for soil purification, comprising:

an input screening unit for cleaning and screening the input contaminated soil;

a transfer unit for transferring the contaminated soil discharged from the input screening unit;

a cleaning unit that sprays high-pressure water onto the contaminated soil transferred along the movement path of the transfer unit to peel off contaminants from the contaminated soil;

a contaminated soil separation unit that stirs the contaminated soil discharged from the cleaning unit, separates the contaminated materials and the purified soil stripped from the contaminated soil, and selectively discharges only the purified soil; and

a discharge unit for transferring the purified soil discharged from the contaminated soil separation unit along a discharge path,

the input screening unit includes:

a vibrating hopper which forms a contaminated soil input path and is formed into a shape gradually narrowing from the upper part to the lower part;

a body connected to the vibration hopper, one end of which is disposed higher than the other end thereof to move contaminated soil discharged from the vibration hopper;

a screening screen disposed inside the body for screening contaminated soil having a predetermined particle size or less;

a plurality of nanobubble jet members provided toward the sieving screen, for jetting water to the contaminated soil to induce pre-peeling by nanobubbles; and

an ultrasonic vibrator which generates acoustic cavitation to the contaminated soil moving on the sieving screen and which previously peels off contaminants by using impact energy generated when bubbles are broken,

the nano-bubble spraying member includes a vertical spraying member spraying water in a vertical direction and a horizontal spraying member spraying water in a horizontal direction to prevent foreign materials from being stacked on the body,

the transfer unit transfers the nanobubble water and the contaminated soil by previously peeling off the contaminated material of the contaminated soil toward the cleaning unit by a transfer screw provided on a transfer path.

2. The modular cleaning apparatus for soil decontamination as claimed in claim 1,

the cleaning part includes:

a surface separation section formed by reducing the diameter from the inlet side, for generating a cavity bubble to the contaminated soil discharged from the transfer section, separating the contaminated soil from the contaminated material by using impact energy generated during the generation and rupture of the cavity bubble, and generating shear stress and vertical stress by high-speed and high-pressure water flow to separate the contaminated material;

a first collision zone formed by expanding the inner diameter of the end of the surface peeling zone, wherein the fluid passing through the surface peeling zone generates turbulence due to pressure change, thereby generating collision between particles; and

and a second collision zone for allowing the contaminated soil to pass through the first collision zone and then collide with the collision member, thereby further separating the contaminants.

3. The modular cleaning apparatus for soil decontamination as claimed in claim 2,

the cleaning part includes:

the cleaning part may further include an ultrasonic vibrator provided in the first collision section to generate acoustic cavitation, thereby additionally peeling off the contaminants by using impact energy generated when the bubbles are ruptured.

4. The modular cleaning apparatus for soil decontamination as claimed in claim 1,

the contaminated soil separation section includes:

a soil settling member for allowing the contaminated soil discharged from the cleaning unit to flow therein, the soil settling member including an agitator therein for discharging contaminated soil having a particle size of a predetermined interval or more;

a waste water discharge member connected to one side of the soil settling member, for discharging waste water contained in the contaminated soil flowing into the soil settling member; and

and the polluted gas discharge part is connected with the other side of the soil sedimentation part and is used for sucking and discharging the polluted gas of the soil sedimentation part.

5. The modular cleaning apparatus for soil decontamination as claimed in claim 4,

the contaminated soil separation part may further include a fine bubble generator provided at a lower inclined surface having a narrowed diameter in the inside of the soil settling member, for supplying fine bubbles to the surface of the contaminated soil.

6. The modular cleaning apparatus for soil decontamination as claimed in claim 4,

the contaminated gas discharge apparatus includes:

a main body having a suction port for moving the contaminated gas of the soil settling member;

a turbo blower installed inside the main body and allowing a contaminated gas to flow into the main body through the suction port; and

activated charcoal that purifies a pollutant gas flowing into the main body by the turbo blower.

7. The modular cleaning apparatus for soil decontamination as claimed in claim 1,

further comprises a magnetic screening part, the magnetic screening part comprises:

a magnetic body having one end connected to the cleaning part, into which the purified soil is introduced, a guide member for guiding the movement of the purified soil, and a magnetic mineral pollutant attached to the purified soil guided by the guide member;

a cylindrical magnetic member provided at an end of the guide member, for separating metal contained in the purified soil flowing into the guide member and storing the separated metal; and

and the driving component is arranged on the outer side surface of the guide component and is used for changing the angle of the guide component so as to provide driving force to discharge the mineral pollutants with magnetism separated by the cylindrical magnetic component through the magnetic discharge port.