KR20150100031A - Water treatment apparatus using plasma - Google Patents

Abstract

The present invention is to provide a plasma water treatment apparatus which has an improved structure to achieve higher efficiency in purifying water quality of contaminated water. To achieve this, the present invention provides a plasma water treatment apparatus which comprises: a supply pipe which is supplied with water; a water tank which stores water supplied from the supply pipe; a discharge port through which purified water is discharged; and a plasma treatment device which is installed in the water tank and discharges plasma-reacted air or gas into water to purify water. The plasma treatment device comprises: a transparent dielectric pipe which is installed in the water, wherein air or gas flows and a discharge electrode is installed; an opposite electrode which is installed in the water in the outside of the dielectric pipe; a power application means which applies power to the discharge and opposite electrodes to generate plasma within the dielectric pipe; and a bubble generator which is connected to the dielectric pipe to convert air or gas passing therethrough into a plurality of air bubbles in the water. The dielectric pipe is installed so that the longitudinal direction can be horizontal. The bubble generator is extended in the same direction as the longitudinal direction of the dielectric pipe to generate air bubbles so that air bubbles can flow around the dielectric pipe along the longitudinal direction thereof.

Description

[0001] The present invention relates to a water treatment apparatus using plasma,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma water treatment apparatus, and more particularly, to a plasma treatment apparatus for generating plasma to purify polluted water such as a wastewater treatment tank, an aquarium, etc., To a plasma water treatment apparatus.

In aquariums such as sausages, a purification device or a sterilization device is used to improve the quality of the fishes stored and to prevent the propagation of bacteria and to remove contaminants in order to improve water quality. As the aquarium purification apparatus for purifying and sterilizing, recently, a water purification apparatus using a plasma processor has been developed.

In addition, a technique for purifying wastewater using a plasma water treatment apparatus has recently been developed for the purification treatment of industrial wastewater, etc., which is difficult to purify.

FIG. 1 is a view of an example of a water purification apparatus utilizing such a plasma processor, which is disclosed in Korean Patent Publication No. 10-1108146.

Referring to FIG. 1, an aquarium 8 is installed below a plasma module 1 contained in a box-shaped case so that water purified by the plasma module 1 is circulated to the aquarium.

A plasma processor 5 is provided inside the plasma module 1 in which a conductive discharge electrode 2 and a conductive counter electrode 3 are fixed inside and an air stone 4 is connected to a lower portion of the plasma processor 1, A power supply 6 for supplying power and an air generator 7 for supplying air are connected and a control box is installed.

Accordingly, the plasma energy is continuously transferred into the water, thereby purifying the water quality in the aquarium, removing green algae, moss, earthy odor, and sterilizing Escherichia coli and bacteria.

However, in order for the plasma module 1 to be installed in a large aquarium or in a place where a large amount of water needs to be purified, it is necessary to further increase the water treatment efficiency by the plasma processor, and even with a plasma processor of a relatively small capacity It is necessary to improve the water purification effect to obtain a sufficient water purification effect on a large amount of water.

In addition, bubbles are generated in the process of lifting and flowing the seawater of the aquarium to the plasma module, and the generated foam rises and comes into contact with various devices installed on the upper part of the plasma module 1 to prevent malfunction, corrosion, Causing problems.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a plasma water treatment apparatus having a structure in which a plasma treatment apparatus for purifying contaminated water has improved water purification efficiency.

It is another object of the present invention to provide a plasma water treatment apparatus having a structure capable of removing bubbles generated in a plasma processor during a water quality purification process of an aquarium or the like without rising.

Accordingly, it is an object of the present invention to provide an apparatus and a method for supplying water to a water tank, comprising a supply pipe for receiving water, a water tank for containing water supplied from the supply pipe, an outlet for discharging purified water from the water tank, And a plasma processor for purifying the water by discharging it in water, wherein the plasma processor comprises a transparent dielectric tube which is installed in water and in which air or gas flows inside and in which a discharge electrode is provided, Power supply means for generating plasma in the dielectric tube by applying power to the discharge electrode and the counter electrode, and a power supply means connected to the dielectric tube for converting the air or gas into a plurality of bubbles in water Wherein the dielectric tube has a longitudinal direction transverse to the longitudinal direction, And the bubble generator extends from the lower side of the dielectric tube in the same direction as the longitudinal direction of the dielectric tube to generate bubbles so that bubbles discharged from the bubble generator and rising upwardly surround the dielectric tube The plasma water treatment apparatus is distributed along the longitudinal direction of the dielectric tube.

In addition, the present invention is characterized in that the supply pipe is provided with a plurality of spray holes, disposed on the water surface, and discharged so that the supplied water drops from the plurality of spray holes to the water surface.

The present invention is characterized in that a plurality of the dielectric tubes are arranged side by side in a region where the bubbles discharged from the bubble generator rise.

Further, the present invention is characterized in that the dielectric tube in which a plurality of the dielectric tubes are arranged in parallel is arranged in two or more layers.

Further, the present invention is characterized in that a mesh layer is provided between the supply pipe and the water surface, in which water falling from the plurality of injection holes collide with each other.

In the plasma water treatment apparatus according to the present invention, the dielectric tube is installed so that the longitudinal direction thereof is in the transverse direction, and the bubble generator is configured to discharge bubbles from the lower side of the dielectric tube around the dielectric tube, Or the activity of the radical may further be improved in the course of the gas bubbles flowing around the dielectric tube. As a result, the activity of radicals reacting with contaminants is further amplified, so that water treatment effects on relatively large amounts of water can be generated even by a relatively small capacity plasma processor.

In addition, the present invention provides a method and apparatus for generating a turbulent flow in water as the water falling from a plurality of injection holes formed in a supply pipe collides with the water surface, do. Accordingly, the ozone and the radical material react more frequently with contaminants in the water, thereby enhancing the water purification efficiency.

In addition, the supply pipe of the present invention is provided with a plurality of spray holes, disposed on the water surface, supplying water supplied from the aquarium to the water surface from a plurality of spray holes, and water falling between the supply pipe and the water surface ) Layer. As a result, the bubbles generated from the water surface rupture and scatter in the mesh layer and the mesh layer due to scattered and scattered water droplets, and the generated bubbles rise, thereby contacting the various devices installed on the upper part such as the activated carbon filter Can be solved.

1 is a block diagram of a water purification apparatus using a conventional plasma processor
2 is a conceptual diagram showing a configuration in which a plasma water treatment apparatus according to an embodiment of the present invention is installed to purify water in an aquarium
3 is a cross-sectional view of a plasma water treatment apparatus according to an embodiment of the present invention
4 is a side cross-sectional view of a plasma water treatment apparatus according to an embodiment of the present invention
5 is a cross-sectional view showing the structure of a plasma processor in a plasma water treatment apparatus according to an embodiment of the present invention
6 is a side cross-sectional view of a plasma water treatment apparatus according to another embodiment of the present invention
FIG. 7 is an explanatory diagram for explaining a state in which bubbles are generated in association with the plasma water treatment apparatus according to the embodiment of the present invention. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 2 shows a configuration in which a plasma water treatment apparatus according to an embodiment of the present invention is installed to purify water in an aquarium.

The contaminated water in the aquarium 200 is supplied to the plasma water treatment apparatus 100 through the supply line 11 by the operation of the pump 300 and the purified water in the plasma water treatment apparatus 100 is supplied to the discharge line 31, The water in the aquarium 200 is circulated and purified.

Figs. 3 and 4 show details of the cross-sectional and side cross-sectional configurations of the plasma water treatment apparatus 100 described above.

3 and 4, a plasma water treatment apparatus 100 according to an embodiment of the present invention includes a supply pipe 10 for receiving water, a water tank 20 for receiving water supplied from the supply pipe 10, A discharge port 30 through which water purified in the water tank 20 is discharged and a plasma processor 40 installed in the water tank 20 for purifying water by discharging air or gas that has been plasma- .

The supply pipe 10 is in the shape of a pipe such as a pipe connected to a supply line 11 through which water flows from the aquarium 200 and supplies water supplied from the supply line into the water tank 20.

The supply pipe 10 is fixedly installed on a side surface of the water tank 20 and is long in the longitudinal direction from the upper side of the water surface and has a water discharge hole 12 formed along the longitudinal direction on the lower side, do. Water flowing inside the supply pipe (10) is uniformly supplied to the water surface while falling through the spray hole (12).

As such, the falling water is supplied by falling water, which generates turbulence in the water as it hits the surface of the water and mixes with each other, so that the movement of air bubbles including ozone and radicals in the water can be more actively and intricately induced have. Accordingly, ozone and radical substances in the bubbles can more frequently come into contact with and react with contaminants in the water, thereby increasing the water treatment efficiency.

The activated carbon filter 60 is installed at the upper end of the water tank 20 so that the inside of the water tank 20 does not communicate directly with the outside, . Accordingly, the gas in the water tank 20 passes through the activated carbon filter 60, is discharged to the outside of the water tank 20, and ozone can be filtered by the activated carbon filter 60.

The discharge port 30 is connected to a discharge line 31 provided at the lower part of the water tank 20 and installed in the aquarium 200 to discharge the purified water to the aquarium 200.

It is more preferable that the discharge port 30 is installed at a lower part of one side spaced apart from the bubble generator 45, which will be described later, so as to prevent inflow of bubbles and is installed lower than a position where bubbles are generated.

Reference numeral 25 denotes a water level sensor, which can control the amount of water to be supplied by detecting the water level and sending a detection signal to the controller (not shown).

3 to 5, the plasma processor 40 includes a transparent dielectric tube 42 installed in the water and having air or gas flowing therein and having a discharge electrode 43 disposed therein, A power applying means (not shown) for generating plasma in the dielectric tube 42 by applying power to the discharge electrode 43 and the counter electrode 44, And a bubble generator 45 connected to the dielectric tube 42 and adapted to be converted into a number of bubbles in water while passing through the air or gas.

The dielectric tube 42 is used for discharge and the wall of the tube becomes a dielectric located between the discharge electrode 43 and the counter electrode 44 so that plasma can be generated at the discharge electrode 43. As a specific material thereof, a transparent quartz tube is most preferable. The transparent quartz tube can transmit ultraviolet rays or the like generated in the plasma to kill bacteria and the like in the water.

The dielectric tube 42 is supplied with air or gas to the dielectric tube 42 by a compressor 48 so that air or gas can flow through the bubble generator 45 with a certain pressure.

Referring to FIG. 5, the discharge electrode 43 is disposed inside the dielectric tube 42 and generates plasma discharge with the counter electrode 44. 5, the discharge electrode 43 may be formed along the inner center line of the dielectric tube 42 in the form of a linear rod, or the discharge electrode may be formed in the shape of a coil so that the inner peripheral surface of the dielectric tube 42 And can be installed so as to be in close contact with each other.

The counter electrode (44) is made of a conductive material and is fixed to the fixed head and installed in the water in the water tank (20). Since the conductive counter electrode 44 can function as a whole of water in the water, the conductive counter electrode 44 can be provided in the vicinity of the dielectric tube 42, so that the conductive counter electrode 44 can be provided in contact with the dielectric tube 42.

The power applying apparatus may be a commercial electronic neon transformer having a high voltage pulse AC power source at a frequency of 22.5 to 23 kHz as a power source connected to the discharge electrode 43 and the counter electrode 44 to generate plasma therebetween.

The bubble generator 45 is installed in the lower part of the dielectric tube 42 in the lateral direction as the dielectric tube 420 and the dielectric tube 42 and the bubble generator 45 are connected through the gas flow path 46, The treated air or gas is introduced into the bubble generator 45 from the dielectric tube 42. When the air or gas is discharged into the water as it passes through the bubble generator 45, a lump of air or gas flows through the porous structure And is discharged in the form of fine bubbles. This is to generate fine micro-sized bubbles to widen the contact surface area with water and to promote the reaction, and a known bubble generator 45 may be employed.

Particularly, in this embodiment, the dielectric tube 42 is horizontally disposed in the region where the bubbles generated by the bubble generator 45 are raised to generate plasma, so that the bubbles flow around the dielectric tube 42 . That is, the region where the bubbles discharged from the bubble generator 45 and rising up surround the dielectric tube 42 is distributed along the longitudinal direction of the dielectric tube 42.

The bubble generator 45 also has a shape extending from the lower side of the dielectric tube 42 in the same direction as the longitudinal direction of the dielectric tube 42 or in the transverse direction and bubbles are generated in the entire lengthwise direction of the bubble generator 45 .

The bubble is generated along the longitudinal direction of the bubble generator 45 and the dielectric tube 42 is positioned horizontally in the region where the bubble rises so that the dielectric tube 42 The bubbles can flow along the rising path that surrounds the dielectric tube 42. That is, the dielectric tube 42 is surrounded by the bubbles flowing in the longitudinal direction of the dielectric tube 42, and the region where the bubbles surround the dielectric tube 42 is evenly distributed along the longitudinal direction of the dielectric tube 42.

This is to allow more bubbles to flow in the peripheral region close to the dielectric tube 42 so that the bubbles can absorb the plasma energy such as ultraviolet rays from the dielectric tube 42 in which the plasma is generated.

This operation will be described in more detail as follows.

There is a known technique for generating OH radicals by reacting ultraviolet rays with ozone in an advanced oxidation treatment technique known as AOT (Advanced Oxidation Technologies).

The above-described configuration of the present embodiment improves the structure so that the AOT technology can be applied to the plasma water treatment apparatus and the efficiency thereof can be increased.

That is, the plasma energy such as ultraviolet rays generated by the plasma in the dielectric tube 42 is transmitted to the periphery of the transparent dielectric tube 42, so that ozone flowing in the peripheral region close to the dielectric tube 42, Can be activated. OH radicals are generated by the self-decomposition of ozone, and the OH radicals can be amplified by receiving ultraviolet rays or the like while bubbles containing ozone or the like flow in the vicinity of the dielectric tube 42.

This embodiment has a specific structure so that the amplification of the radical material in such bubbles can be more widely performed. The dielectric tube 42 is installed so that the longitudinal direction thereof is in the transverse direction and the bubble generator 45 Is formed such that the longitudinal direction of the dielectric tube 42 is in the transverse direction so that the region where the dielectric tube 42 and the bubble come close to each other is formed broadly along the longitudinal direction.

6, the plurality of dielectric tubes 42a and 42b may be arranged in parallel with each other in a region where the bubbles discharged from the bubble generator 45 rise, 42a, and 42b so that the region where the bubbles and the dielectric tubes 42a and 42b cross each other can be formed more widely. A dielectric tube 42 in which a plurality of dielectric tubes 42a and 42b are arranged side by side is arranged such that the arrangement of the dielectric tubes 42a and 42b is a transverse direction layer in which two layers 42a and 42b are located, More preferably two or more layers of layers.

In the conventional plasma water treatment apparatus in which the dielectric tube 42 is disposed vertically, the bubbles generated from the lower portion of the dielectric tube 42 spread out while being spaced apart from the dielectric tube 42. Therefore, 42 are narrow and the plasma energy such as ultraviolet rays can not be sufficiently absorbed.

As a result, in the present embodiment, the bubbles, which are plasma-treated in the dielectric tube 42 and primarily formed of ozone and radicals, flow around the dielectric tube 42 and can further amplify the radicals, Degradation activity can be further amplified.

Next, the configuration and operation of removing the bubbles in the plasma water treatment apparatus 100 of this embodiment for purifying seawater or contaminated water will be described.

In the present embodiment, the supply pipe 10 is provided with a plurality of spray holes 12 and is disposed on the water surface, and water supplied from the aquarium 200 is supplied to the water surface from the plurality of spray holes 12.

A mesh layer 50 is provided between the supply pipe 10 and the water surface so that water falling from the plurality of spray holes 12 collide with each other. The mesh layer 50 may be a conventional wire mesh having small holes.

When the seawater is caused to flow through the supply pipe 10a in the aquarium using seawater, a large amount of the foam 27 is generated and the greater the degree of contamination of the seawater, 27) is increased. As shown in FIG. 7, the foam 27 accumulated on the water surface rises up to a position where the activated carbon filter 60 is installed, causing the performance of the activated carbon filter 60 to filter ozone to deteriorate, And can cause problems of failure.

According to the structure of the injection hole 12 and the mesh layer 50 of the present embodiment, water supplied from the aquarium 200 drops onto the water surface from the plurality of injection holes 12, As a result, some parts are scattered in the form of droplets. Accordingly, bubbles 27 are further generated when the bubbles 27 generated from the water surface are raised and removed by contact with the mesh layer 50 and water droplets that are broken and scattered in the mesh layer 50 Thereby preventing accumulation and rising. It is possible to solve the problem that the generated foam 27 rises and comes into contact with various devices installed on the top of the activated carbon filter 60 or the like.

Although the plasma water treatment apparatus 100 of the present invention has been described above as an embodiment provided in the aquarium 200, it can be utilized not only as a water treatment apparatus for the aquarium 200 but also as a water treatment apparatus for other fields such as industrial wastewater Of course.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. Of course, other modified embodiments are possible within the scope of the present invention.

10,10a; A supply pipe 11; Supply line
12; Minute spray 20; water tank
27; Foam 30; outlet
31; Discharge line 40; Plasma processor
42, 42a, 42b; A dielectric tube 43; Discharge electrode
44; An opposing electrode 45; Bubble generator
46; A gas flow path 50; The mesh layer
60; Activated carbon filter 100; Plasma water treatment device
200; Aquarium 300; Pump

Claims (5)

A supply pipe 10 for receiving water to be purified,
A water tank 20 for receiving water supplied from the supply pipe 10,
An outlet 30 through which water purified in the water tank 20 is discharged,
And a plasma processor (40) installed in the water tank (20) for purifying water by discharging plasma or air or gas that has undergone plasma reaction,
The plasma processor (40)
A transparent dielectric tube 42 installed in the water and in which air or gas flows inside and a discharge electrode 43 is installed therein,
An opposing electrode 44 provided in the water outside the dielectric tube 42,
Power applying means for generating plasma in the dielectric tube 42 by applying power to the discharge electrode 43 and the counter electrode 44,
And a bubble generator (45) connected to the dielectric tube (42) for converting the air or gas into a plurality of bubbles in water while passing through the bubble generator
The dielectric tube 42 is installed so that its longitudinal direction is transverse,
The bubble generator 45 extends beneath the dielectric tube 42 in the same direction as the longitudinal direction of the dielectric tube 42 to generate bubbles,
Characterized in that the region where the bubbles discharged from the bubble generator (45) and rising up surround the dielectric tube (42) is distributed along the longitudinal direction of the dielectric tube (42) The method according to claim 1,
The supply pipe 10 is disposed above the water surface,
A plurality of spray holes 12 are provided,
And the discharged water is discharged from the plurality of spray holes (12) so as to fall on the surface of the water. The method according to claim 1,
In the region where the bubbles discharged from the bubble generator 45 rise
And a plurality of said dielectric tubes (42) are arranged side by side. The method of claim 3,
Wherein the plurality of dielectric tubes (42) are arranged in two or more layers of dielectric tubes (42) in which a plurality of dielectric tubes (42) are arranged side by side, 5. The method according to any one of claims 1 to 4,
Between the supply pipe (10) and the water surface,
And a mesh layer (50) on which water falls from the plurality of injection holes (12) is formed.

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