KR20210041396A - Plasma water treatmemt apparatus using bubbles in water - Google Patents

Abstract

An object of the present invention is to provide a plasma water treatment device using bubbles in water, which controls 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 allows air to be uniformly distributed in a vortex area where the contaminated water and air are mixed, thereby forming a plasma discharge in the vortex area. A plasma water treatment device using bubbles in water according to 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 an air inlet pipe connected to the outside of the housing and installed in the treatment space to suck external 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 serve as different one of a high voltage electrode and a 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 the contaminated water accommodated in the treatment space and the sucked air are mixed in the vortex area to cause plasma discharge.

Description

Plasma water treatment device using water 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 inhaled air.

As is known, plasma water treatment technology has been developed in order to treat water of a large flow rate by overcoming the limitations of conventional water treatment technology. However, the conventional plasma water treatment technology still has limitations. Therefore, there is a need to maximize the effect of water treatment by contacting the plasma with water regardless of the type of plasma.

The technology that generates plasma discharge inside the liquid is an environmental technology that removes pollutants, and can be used in various fields such as material technology that develops new materials of high value. 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 generally known technique generates bubbles in water by injecting additional gas. A system for additionally supplying gas to maximize plasma water treatment efficiency lowers the efficiency of the entire water treatment system and increases the complexity of the water treatment system.

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

An object of the present invention is to provide a plasma water treatment apparatus using water bubbles that efficiently water-treat 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 (e.g., water) (without an additional device) to inhale external gas into the contaminated water flow area to form a vortex in the contaminated water, and to form a vortex in which contaminated water and air are mixed. It is to provide a plasma water treatment apparatus using bubbles in water that uniformly distributes air in the vortex and forms a plasma discharge in the eddy current region for water treatment.

A plasma water treatment apparatus using underwater bubbles according to an embodiment of the present invention includes a housing for introducing contaminated water to be treated into an inlet, plasma treatment of the contaminated water in a treatment space, and discharging the treated water to an outlet, and the An air inlet pipe connected to the outside of the housing and installed in the treatment space to suck external air with a suction force acting upon the inflow of the contaminated water and supply it to the treatment space, wherein the air inlet pipe and the outlet are It acts as a different electrode among the high voltage electrode and the ground electrode, and the water surface of the contaminated water accommodated in the processing space and the inner end of the air inlet pipe form a discharge gap between each other, and are accommodated in the processing space. The contaminated water and the inhaled air are mixed in the vortex area to cause 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 the contaminated water introduced, and a passage narrower than the receiving part and the treatment space to control the flow rate and flow rate of the contaminated water descending from the receiving part to the treatment space. It may further include a control portion to be formed.

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

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

The outer surface of the air inlet pipe and the inner surface of the adjusting part may be formed at a minimum distance from the adjusting part.

The air inlet pipe is installed via the accommodating part and the adjusting part, and the opening at 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 as it goes from the inner end side to the outer end side of the air inlet pipe, so that the variable spacing is formed to the maximum at the outer end side and goes toward the inner end side. It can be gradually narrowed.

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

Accordingly, in one embodiment, a vortex is formed in the contaminated water accommodated in the treatment space, and the contaminated water and air (bubbles) sucked are mixed in the vortex region, and plasma discharge is generated in the treatment space, and the air in the vortex region ( Air bubbles) also generate plasma discharge, so it is possible to efficiently water-treat a large flow of contaminated water (water) by plasma discharge.

At this time, in one embodiment, since the air (bubbles) is uniformly distributed in the contaminated water (water) in the vortex region, the plasma discharge occurs uniformly by the air (bubbles). can do.

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

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art may easily implement the present invention. However, the present invention may be implemented in various different forms and is not limited to the embodiments described herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, 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 underwater bubbles according to a first embodiment of the present invention. Referring to FIG. 1, a plasma water treatment apparatus 1 using underwater bubbles according to a first embodiment includes a housing 10 and an air inlet pipe 20.

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

For example, the housing 10 has an inlet 11 at the top and an outlet 12 at the bottom. In addition, the housing 10 includes a processing space 13 between the inlet 11 and the outlet 12 to treat contaminated water 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 the contaminants have been removed by plasma treatment in the treatment space 13, and the treated water is the outlet 12 of the housing 10 Is discharged into.

The air inlet pipe 20 is connected to the outside of the housing 10 and is installed in the internal 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 contaminated water flows from the inlet 11 to the treatment space 13, a suction force acts on the opening of the inner end 22 of the air inlet pipe 20, and by this suction force, external air is transferred to the outer end 21 It is introduced 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 12 may serve as different electrodes among 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 is applied to the air sucked into the processing space 13 through the air inlet pipe 20, and a high voltage may be applied to the air mixed with the contaminated water. That is, air is sucked into the processing space 13 while a high voltage is applied, and is distributed in the contaminated water.

Meanwhile, the housing 10 further includes an accommodating portion 14 and an adjusting portion 15. The receiving part 14 is formed on the upper part of the treatment space 13 to primarily receive and pass through the contaminated water flowing into the treatment space 13.

The adjusting part 15 is formed between the receiving part 14 and the treatment space 13 in a narrow passage than the receiving part 14 and the treatment space 13 with respect to the suction direction of contaminated water (up-down direction in FIG. 1). , The flow rate and flow rate of the contaminated water going down from the receiving part 14 to the treatment space 13 are adjusted.

The air inlet pipe 20 is installed via the receiving portion 14 and the adjusting portion 15, and an 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 part 15 are formed at a minimum distance G1 in the adjusting part 15. The minimum interval G1 sets the flow rate and flow rate of contaminated 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 air sucked are mixed in the vortex area WA. During the plasma discharge P1 in the discharge gap G, a plasma discharge P2 is generated by using the air mixed in the eddy current region WA as a discharge gas. The plasma discharge P2 in the eddy current region WA is generated in addition to the plasma discharge P1 in the discharge gap G, thereby enabling efficient water treatment of contaminated water (water) having a large flow rate.

In this case, as the air (bubbles) is more evenly distributed in the contaminated water (water) in the eddy current region WA, the plasma discharge P2 due to the air (bubbles) may occur more uniformly. Therefore, contaminated water (water) can be treated more effectively in the vortex area WA.

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

Looking at the water treatment process of contaminated water, first, the plasma water treatment apparatus introduces contaminated water into the inlet 11. The contaminated water flows through the receiving portion 14 and the adjusting portion 15 of the housing 10 and flows into the processing space 13 in a state where the flow rate is increased. As the flow velocity increases, a suction force acts on the opening of the inner end 22 of the air inlet pipe 20, and external 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 the outlet 12 is grounded to serve as a ground electrode. Accordingly, air sucked in the discharge gap G formed between the water surface and the inner end 22 in the receiving portion 14 acts as a discharge gas. A high voltage is applied to the air and the contaminated water is electrically grounded, so that a plasma discharge P1 occurs in the discharge gap G. Plasma generated by the plasma discharge P1 treats contaminated water on the surface.

In addition, by the suction force of the air being sucked, air is introduced into the contaminated water and mixed with the contaminated water while forming the vortex area WA. Therefore, air bubbles are evenly distributed in the contaminated water. In addition to the plasma discharge P1 occurring in the discharge gap G, air (bubbles) inside the contaminated water are small as discharge gas, so that the plasma discharge P2 further occurs.

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

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

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

3 is a block diagram of a plasma water treatment apparatus using underwater 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 portion 14 and the adjusting portion 15, and the opening of the inner end 32 is closed. It is placed in the processing space 13.

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

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

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

As an example, the air inlet pipe 30 may be mounted in a structure that can be lifted up and down on the electrical insulating member 23 through the holder 33. Although not shown, the air inlet pipe 30 may be raised and lowered by an operation of an elevation actuator connected to the holder 33.

When the air inlet pipe 30 is raised or lowered, the flow rate and the flow rate at which the contaminated water descends from the receiving portion 14 to the treatment space 13 are further adjusted due to the increase or decrease of the variable interval G3, and thus, the air inlet pipe ( Through 30), the flow rate and flow rate of the air sucked from the outside can be further controlled.

In addition, when the discharge gap G31 is changed due to the elevation of the air inlet pipe 30, the plasma discharge P31 may be variably generated 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 air sucked 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 further corresponding to the flow rate and flow rate of contaminated water and air. The plasma discharge P32 in the eddy current region WA is generated in addition to the plasma discharge P31 in the discharge gap G31, thereby enabling efficient water treatment of contaminated water (water) having a large flow rate.

In this case, as the air (bubble) is more evenly distributed in the contaminated water (water) in the eddy current region WA, the plasma discharge P32 due to the air (bubble) may occur more uniformly. 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 underwater 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 serves as a ground electrode, the housing 310 is formed of an insulating material, and the outlet 312 serves as a high voltage electrode. I 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 discharge port 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 is in various fields, that is, when plasma discharge is generated in water to purify contaminated water, when plasma discharge is generated from liquid organic material to manufacture a carbon catalyst that can replace a noble metal catalyst, In order to produce eco-friendly hydrogen, it can be effectively used when plasma discharge is generated in water, when plasma-treated water is used as agricultural water, and when plasma-treated water is sterilized.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and it is possible to implement various modifications within the scope of the claims, the description of the invention, and the accompanying drawings. It is natural to fall 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 insulation member 33: holder
G, G31: Discharge gap G1: Minimum gap
G3: variable interval P1, P2, P31, P32: plasma discharge
WA: Vortex area

Claims (9)

A housing for introducing contaminated water to be treated through the inlet, plasma treatment of the contaminated water in the treatment space, and discharging the treated water to the discharge port; And
An air inlet pipe connected to the outside of the housing and installed in the treatment space to suck external air with a suction force acting upon the inflow of the contaminated water and supply it to the treatment space
Including,
The air inlet pipe and the outlet serve as different electrodes of a high voltage electrode and a 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 therebetween,
The contaminated water accommodated in the treatment space and the air sucked are mixed in the eddy current region to cause plasma discharge.
Plasma water treatment apparatus using water bubbles. The method of claim 1,
The air inlet pipe acts as a high voltage electrode,
The outlet serves as a ground electrode.
Plasma water treatment apparatus using water bubbles. The method of claim 1,
The housing is
A receiving portion formed on the upper portion of the treatment space to receive the introduced contaminated water, and
A control unit formed by a passage narrower than the receiving unit and the treatment space to adjust the flow rate and flow rate of the contaminated water from the receiving unit to the treatment space
Plasma water treatment apparatus using water bubbles further comprising a. The method of claim 3,
The air inlet pipe is
It is installed via the receiving portion and the adjusting portion,
Arranging the opening of the inner end in the processing space
Plasma water treatment apparatus using water bubbles. The method of claim 4,
The inner end
Plasma water treatment apparatus using underwater bubbles to form a discharge gap between the water surface of the contaminated water accommodated in the treatment space. The method of claim 1,
The outer surface of the air inlet pipe and the inner surface of the control unit are
Formed at the minimum interval in the adjustment unit
Plasma water treatment apparatus using water bubbles. The method of claim 3,
The air inlet pipe is
It is installed via the receiving portion and the adjusting portion,
Arranging the opening of the inner end 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 apparatus using water bubbles. The method of claim 7,
The outer diameter of the air inlet pipe corresponding to the control unit is
It gradually decreases as it goes from the inner end side to the outer end side of the air inlet pipe,
The variable spacing is
It is formed to the maximum at the outer end side and gradually narrows as it goes to the inner end side
Plasma water treatment apparatus using water bubbles. The method of 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 apparatus using water bubbles.

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