KR102340857B1 - Plasma water treatmemt apparatus using bubbles in water - Google Patents

Abstract

An object of the present invention is to control the flow of contaminated water (eg, water) (without an additional device) to form a vortex in the contaminated water by sucking external gas into the area through which the contaminated water flows, and a vortex area where the contaminated water and air are mixed. To provide a plasma water treatment device using water bubbles that uniformly distributes air in the vortex and performs water treatment by forming a plasma discharge in this vortex region. A plasma water treatment apparatus using water bubbles according to an embodiment of the present invention includes a housing for introducing contaminated water to be treated through an inlet, plasma-treating the contaminated water in a treatment space, and discharging the treated water through an outlet, and the and an air inlet pipe connected to the outside of the housing and installed in the treatment space to suck outside air with a suction force acting according to the inflow of the contaminated water and supply it to the treatment space, wherein the air inlet pipe and the outlet include The high voltage electrode and the ground electrode act as different electrodes, and the water surface of the contaminated water accommodated in the treatment space and the inner end of the air inlet pipe form a discharge gap between each other, and are accommodated in the treatment space. Contaminated water and sucked air are mixed in the vortex region to generate plasma discharge.

Description

Plasma water treatment device using air bubbles {PLASMA WATER TREATMEMT APPARATUS USING BUBBLES IN WATER}

The present invention relates to a plasma water treatment apparatus, and more particularly, to a plasma water treatment apparatus using water bubbles for water treatment with plasma generated using sucked air.

As is known, plasma water treatment technology is being developed in order to overcome the limitations of the conventional water treatment technology to treat a large amount of water. However, the conventional plasma water treatment technology still has limitations. Therefore, there is a need to maximize the effect of water treatment by bringing the plasma into contact with water regardless of the type of plasma.

The technology that generates plasma discharge in a liquid is an environmental technology that removes pollutants, and can be used in various fields such as material technology to develop high-value new materials. In order to efficiently generate plasma in water, it is necessary to appropriately control the generation of bubbles and the distribution of fine bubbles.

However, a commonly known technique generates air bubbles in water by additionally injecting gas. A system for additionally supplying gas in order to maximize plasma water treatment efficiency reduces the efficiency of the entire water treatment system and increases the complexity of the water treatment system.

In addition, if a plasma discharge is performed after additional gas is supplied to treat a large flow of water, the instability of the plasma discharge may increase depending on the gas injection method, and the uniformity of the bubbles in the bubble region where water and bubbles are mixed One distribution becomes difficult. Therefore, the plasma water treatment method of additionally supplying gas has a limit in increasing water treatment efficiency.

It is an object of the present invention to provide a plasma water treatment apparatus using water bubbles that efficiently water-treats a large flow of contaminated water with plasma by optimizing the flow of contaminated water (eg, water) and plasma discharge.

An object of the present invention is to control the flow of contaminated water (eg, water) (without an additional device) to form a vortex in the contaminated water by sucking external gas into the area through which the contaminated water flows, and a vortex area where the contaminated water and air are mixed. To provide a plasma water treatment device using water bubbles that uniformly distributes air in the vortex and performs water treatment by forming a plasma discharge in this vortex region.

A plasma water treatment apparatus using water bubbles according to an embodiment of the present invention includes a housing for introducing contaminated water to be treated through an inlet, plasma-treating the contaminated water in a treatment space, and discharging the treated water through an outlet, and the and an air inlet pipe connected to the outside of the housing and installed in the treatment space to suck outside air with a suction force acting according to the inflow of the contaminated water and supply it to the treatment space, wherein the air inlet pipe and the outlet include The high voltage electrode and the ground electrode act as different electrodes, and the water surface of the contaminated water accommodated in the treatment space and the inner end of the air inlet pipe form a discharge gap between each other, and are accommodated in the treatment space. Contaminated water and sucked air are mixed in the vortex region to generate plasma discharge.

The air inlet pipe may act as a high voltage electrode, and the outlet may act as a ground electrode.

The housing is formed on the upper portion of the treatment space to accommodate a receiving portion for accommodating the incoming contaminated water, and a passage narrower than the receiving portion and the treatment space to control the flow rate and flow rate of the contaminated water from the receiving portion down to the treatment space. It may further include a control unit formed.

The air inlet pipe may be installed via the accommodating part and the adjusting part, and an opening of the inner end may be disposed in the processing space.

The inner end may form a discharge gap between the water surface and the water surface of the contaminated water accommodated in the treatment space.

An outer surface of the air inlet pipe and an inner surface of the adjusting unit may be formed at a minimum distance from the adjusting unit.

The air inlet pipe is installed via the accommodating part and the adjusting part, and an opening of the inner end is disposed in the processing space, and the outer surface of the air inlet pipe and the inner surface of the adjusting part are formed at variable intervals in the adjusting part can be

The outer diameter of the air inlet pipe corresponding to the adjusting part gradually decreases from the inner end side to the outer end side of the air inlet pipe, the variable interval is formed at the maximum at the outer end side and going toward the inner end side It can be progressively narrowed.

The air inlet pipe may act as a ground electrode, the housing may be formed of an insulating material, and the outlet may act as a high voltage electrode.

As described above, according to an embodiment of the present invention, an air inlet pipe is installed in the housing, and while the contaminated water to be treated is introduced, external air is sucked by a suction force acting on the air inlet pipe according to the inflow of the contaminated water.

Therefore, in one embodiment, a vortex is formed in the contaminated water accommodated in the processing space, the contaminated water and the sucked air (bubbles) are mixed in the vortex region, and plasma discharge is generated in the processing space, and also the air in the vortex region ( Since plasma discharge is generated even in air bubbles), a large flow of polluted water (water) can be treated efficiently by plasma discharge.

At this time, in one embodiment, since air (bubbles) is uniformly distributed in the contaminated water (water) in the vortex region, plasma discharge is uniformly generated by the air (bubbles), so that the contaminated water (water) is more effectively treated with water in the vortex region can do.

1 is a configuration diagram of a plasma water treatment apparatus using water bubbles according to a first embodiment of the present invention.
FIG. 2 is a photograph verifying the concept of plasma water treatment using an air suction phenomenon through the plasma water treatment apparatus using water bubbles of FIG. 1 .
3 is a block diagram of a plasma water treatment apparatus using water bubbles according to a second embodiment of the present invention.
4 is a block diagram of a plasma water treatment apparatus using water bubbles according to a third embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, the embodiments of the present invention will be described in detail so that those skilled in the art can easily carry out the present invention. However, the present invention may be embodied in several different forms and is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and the same reference numerals are assigned to the same or similar components throughout the specification.

1 is a block diagram of a plasma water treatment apparatus using water bubbles according to a first embodiment of the present invention. Referring to FIG. 1 , the plasma water treatment apparatus 1 using water bubbles according to the first embodiment includes a housing 10 and an air inlet pipe 20 .

The housing 10 is configured to introduce the contaminated water to be treated and discharge the treated water from which the contaminants are removed from the contaminated water treated with plasma. That is, the housing 10 introduces contaminated water and discharges clean treated water.

For example, the housing 10 has an inlet 11 at the top and an outlet 12 at the bottom. And, the housing 10 is provided with a treatment space 13 between the inlet 11 and the outlet 12, and the contaminated water is treated with plasma generated by the plasma discharge P1.

That is, the contaminated water to be treated flowing into the housing 10 through the inlet 11 is changed to treated water from which contaminants are removed by plasma treatment in the treatment space 13 , and the treated water is discharged through the outlet 12 of the housing 10 . is emitted as

The air inlet pipe 20 is connected to the outside of the housing 10 and installed in the inner processing space 13 of the housing 10 . That is, the air inlet pipe 20 is inserted into the housing 10 from the outside, the outer end 21 is disposed outside the housing 10 , and the inner end 22 is exposed to the processing space 13 . .

Therefore, as the contaminated water flows into the treatment space 13 from the inlet 11 , a suction force acts on the opening of the inner end 22 of the air inlet pipe 20 , and the external air is drawn into the outer end 21 by this suction force. It flows into the processing space 13 through the opening of the inner end 22 and the opening of the inner end 22 .

The air inlet pipe 20 and the outlet port 12 may act as different one of the high voltage electrode and the ground electrode. At this time, the electrical insulating member 23 interposed between the air inlet pipe 20 and the housing 10 electrically insulates both.

The first embodiment is an example, and the air inlet pipe 20 is connected to a high voltage to act as a high voltage electrode, and the outlet 12 is electrically grounded to act as a ground electrode. Accordingly, a high voltage may be applied to the air sucked into the treatment space 13 through the air inlet pipe 20 , and a high voltage may also be applied to the air mixed with the contaminated water. That is, the air is sucked into the treatment space 13 in a state where a high voltage is applied, and is distributed in the contaminated water.

Meanwhile, the housing 10 further includes a accommodating part 14 and an adjusting part 15 . The accommodating part 14 is formed in the upper portion of the treatment space 13 to primarily accommodate the incoming contaminated water and flow it through the treatment space 13 .

The adjusting unit 15 is formed between the receiving unit 14 and the treatment space 13 with respect to the suction direction of the contaminated water (up and down direction in FIG. 1) as a narrow passage than the receiving unit 14 and the treatment space 13, , control the flow rate and flow rate at which the contaminated water goes down to the treatment space 13 from the receiving unit 14 .

The air inlet pipe 20 is installed via the receiving part 14 and the adjusting part 15 , and the opening of the inner end 22 is disposed in the processing space 13 . The outer surface of the air inlet pipe 20 and the inner surface of the adjusting unit 15 are formed with a minimum gap G1 in the adjusting unit 15 . The minimum interval (G1) sets the flow rate and flow rate of the polluted water (water).

The water surface of the contaminated water accommodated in the treatment space 13 and the inner end 22 of the air inlet pipe 20 form a discharge gap G between each other. That is, when a high voltage is applied to the air inlet pipe 20 and the outlet 12 is grounded, a plasma discharge P1 occurs in the discharge gap G set between the inner end 22 and the water surface of the contaminated water.

The contaminated water accommodated in the treatment space 13 and the sucked air are mixed in the vortex area WA. During the plasma discharge P1 in the discharge gap G, the air mixed in the vortex region WA is used as the discharge gas to generate the plasma discharge P2. The plasma discharge P2 in the vortex region WA is generated in addition to the plasma discharge P1 in the discharge gap G, so that a large flow rate of contaminated water (water) can be efficiently treated.

In this case, the more uniformly the air (bubbles) is distributed in the contaminated water (water) in the vortex region WA, the more uniformly the plasma discharge P2 caused by the air (bubbles) may occur. Therefore, contaminated water (water) can be treated more effectively in the vortex area WA.

FIG. 2 is a photograph verifying the concept of plasma water treatment using an air suction phenomenon through the plasma water treatment apparatus using water bubbles of FIG. 1 . Referring to FIG. 2 , the plasma water treatment apparatus of the first embodiment uses the air suction phenomenon to generate plasma in the vortex region WA (ie, underwater) in which polluted water and air are mixed during plasma discharge P1 in the discharge gap G Generation of the discharge P2 is verified.

Looking at the water treatment process of contaminated water, first, the plasma water treatment device introduces the contaminated water through the inlet 11 . Contaminated water flows into the treatment space 13 at an increased flow rate while passing through the receiving unit 14 and the adjusting unit 15 of the housing 10 . As the flow velocity increases, a suction force acts on the opening of the inner end 22 of the air inlet pipe 20 , and the outside air is sucked into the processing space 13 through the opening of the outer end 21 and the opening of the inner end 22 .

At this time, by applying a high voltage to the air inlet pipe 20, the air inlet pipe 20 acts as a high voltage electrode, and by grounding the outlet 12, the outlet 12 acts as a ground electrode. Therefore, the air sucked in the discharge gap (G) formed between the water surface and the inner end 22 in the accommodating part 14 acts as a discharge gas. A high voltage is applied to the air and the contaminated water is electrically grounded to generate a plasma discharge (P1) in the discharge gap (G). The plasma generated by the plasma discharge P1 treats the contaminated water on the surface.

In addition, by the suction force of the sucked air, air is introduced into the contaminated water, and is mixed with the contaminated water while forming the vortex area WA. Therefore, the bubbles are uniformly distributed in the contaminated water. In addition to the plasma discharge P1 occurring in the discharge gap G, the air (bubbles) in the contaminated water is reduced to a discharge gas, and the plasma discharge P2 is further generated.

Contaminated water can be treated with plasma more effectively by plasma generated by plasma discharge (P1) generated in the discharge gap (G) and plasma generated by plasma discharge (P2) generated from air (bubbles) inside the contaminated water. .

In addition, the plasma generated by the plasma discharge P1 formed in the discharge gap G may be further introduced into the contaminated water. This plasma can further help the water treatment action by the plasma generated by the plasma discharge (P2) generated in the air (bubbles) inside the contaminated water. Due to this, the contaminated water can be more effectively treated with plasma water.

Hereinafter, various embodiments of the present invention will be described. Compared with the first embodiment and the previously described embodiments, the same configurations will be omitted and different configurations will be described.

3 is a block diagram of a plasma water treatment apparatus using water bubbles according to a second embodiment of the present invention. Referring to FIG. 3 , in the plasma water treatment apparatus 2 of the second embodiment, the air inlet pipe 30 is installed via the receiving part 14 and the adjusting part 15 , and the opening of the inner end 32 is formed. It is arranged in the processing space (13).

The outer surface of the air inlet pipe 30 and the inner surface of the adjusting unit 15 are formed at a variable interval G3 in the adjusting unit 15 . That is, at least the outer diameter of the air inlet pipe 30 corresponding to the control unit 15 is gradually decreased from the inner end 32 to the outer end 31 side.

Therefore, the variable interval G3 is formed at the maximum on the side of the outer end 31 and gradually narrows toward the inner end 32 side. Due to the variable interval G3, the suction force acting according to the inflow of the contaminated water is controlled, so that the flow rate and the flow rate of the air inlet pipe 30 that sucks in external air can be controlled.

In the second embodiment, the air inlet pipe 30 is formed as a tapered pipe to form a variable interval G3. Although not shown, in the present invention, the air inlet tube may be formed as a tube having the same diameter over the entire length range, and the inner surface of the adjusting unit may be formed as a tapered tube.

As an example, the air inlet pipe 30 may be mounted to the electrical insulation member 23 with the holder 33 interposed therebetween in a structure capable of elevating. Although not shown, the air inlet pipe 30 may be lifted by the operation of an elevation actuator connected to the holder 33 .

When the air inlet pipe 30 moves up and down, the flow rate and flow rate at which the contaminated water from the receiving unit 14 goes down to the treatment space 13 is further regulated due to the increase/decrease of the variable interval G3, and thereby, the air inlet pipe ( 30), the flow rate and flow rate of air sucked in from the outside can be further controlled.

In addition, when the discharge gap G31 is varied due to the elevation of the air inlet pipe 30, the plasma discharge P31 may variably occur in the discharge gap G31 in response to the flow rate and flow rate of contaminated water and the flow rate and flow rate of air. have. The contaminated water accommodated in the treatment space 13 and the sucked air are mixed in the vortex area WA.

During the plasma discharge P31 in the discharge gap G31, the air mixed in the vortex region WA is used as a discharge gas to generate a plasma discharge P32 corresponding to the flow rate and flow rate of the contaminated water and air. The plasma discharge P32 in the vortex region WA is generated in addition to the plasma discharge P31 in the discharge gap G31, so that a large flow rate of contaminated water (water) can be efficiently treated.

In this case, the more uniformly the air (bubbles) is distributed in the contaminated water (water) in the vortex region WA, the more uniformly the plasma discharge P32 caused by the air (bubbles) may occur. Therefore, contaminated water (water) can be treated more effectively in the vortex area WA.

4 is a block diagram of a plasma water treatment apparatus using water bubbles according to a third embodiment of the present invention. 4, in the plasma water treatment apparatus 3 of the third embodiment, the air inlet pipe 20 acts as a ground electrode, the housing 310 is formed of an insulating material, and the outlet 312 acts as a high voltage electrode. can

The water surface of the contaminated water accommodated in the treatment space 13 and the inner end 22 of the air inlet pipe 20 form a discharge gap G between each other. That is, a high voltage is applied to the outlet 12 , the air inlet pipe 20 is grounded, and a plasma discharge P1 occurs in the discharge gap G set between the inner end 22 and the water surface of the contaminated water.

For example, the plasma water treatment apparatus of the embodiments can generate plasma discharge in various fields, that is, when plasma discharge is generated in water to purify polluted water, and when plasma discharge is generated in liquid organic material to produce a carbon catalyst that can replace a noble metal catalyst, When plasma discharge is generated in water to produce eco-friendly hydrogen, when plasma-treated water is used as agricultural water, and when plasma-treated water is sterilized, it can be effectively used.

Although preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications can be made within the scope of the claims, the description of the invention, and the accompanying drawings, and this is also It goes without saying that it falls within the scope of the invention.

1, 2, 3: plasma water treatment device 10, 310: housing
11: inlet 12, 312: outlet
13: processing space 14: receiving part
15: control unit 20, 30: air inlet pipe
21, 31: outer end 22, 32: inner end
23: electrical insulating member 33: holder
G, G31: Discharge gap G1: Minimum gap
G3: Variable interval P1, P2, P31, P32: Plasma discharge
WA: vortex region

Claims (9)

a housing for introducing contaminated water to be treated through an inlet, plasma-treating the contaminated water in a treatment space, and discharging the treated water through an outlet; and
An air inlet pipe connected to the outside of the housing and installed in the treatment space to suck outside air with a suction force acting according to the inflow of the contaminated water and supply it to the treatment space
includes,
The air inlet pipe and the outlet serve as different one of the high voltage electrode and the ground electrode,
The water surface of the contaminated water accommodated in the treatment space and the inner end of the air inlet pipe form a discharge gap between each other and generate a first plasma discharge in the discharge gap,
The polluted water accommodated in the treatment space and the sucked air form a vortex region below the water surface, and the mixed air is mixed in the vortex region to generate a second plasma discharge connected to the first plasma discharge by using the mixed air as a discharge gas.
Plasma water treatment device using water bubbles. According to claim 1,
The air inlet pipe acts as a high voltage electrode,
The outlet serves as a ground electrode
Plasma water treatment device using water bubbles. According to claim 1,
the housing is
A receiving part formed on the upper portion of the treatment space to receive the incoming contaminated water, and
A control unit formed with a narrower passage than the receiving unit and the treatment space to control the flow rate and flow rate of the contaminated water from the receiving unit down to the treatment space
Plasma water treatment device using an underwater bubble further comprising a. 4. The method of claim 3,
The air inlet pipe is
It is installed via the accommodating part and the adjusting part,
disposing the opening of the inner end in the processing space
Plasma water treatment device using water bubbles. 5. The method of claim 4,
The inner end is
Plasma water treatment apparatus using water bubbles to form a discharge gap between the surface of the contaminated water accommodated in the treatment space. 4. The method of claim 3,
The outer surface of the air inlet pipe and the inner surface of the control unit are
formed at a minimum interval in the control unit
Plasma water treatment device using water bubbles. 4. The method of claim 3,
The air inlet pipe is
It is installed via the accommodating part and the adjusting part,
An opening of the inner end is disposed in the processing space,
The outer surface of the air inlet pipe and the inner surface of the control unit are
formed at variable intervals in the control unit
Plasma water treatment device using water bubbles. 8. The method of claim 7,
The outer diameter of the air inlet pipe corresponding to the adjusting unit is
It gradually decreases from the inner end side to the outer end side of the air inlet pipe,
The variable interval is
Formed at the maximum on the outer end side and gradually narrowing toward the inner end side
Plasma water treatment device using water bubbles. According to claim 1,
The air inlet pipe acts as a ground electrode,
The housing is formed of an insulating material,
The outlet serves as a high voltage electrode
Plasma water treatment device using water bubbles.

Images