KR20150022612A - Slim type plasma advanced water treatment apparatus - Google Patents

Abstract

The present invention relates to a slim-type plasma advanced water treatment apparatus including an inner pipe (11) where a first communication path (11A) is formed for the passage of treatment target water, an outer pipe (12) that is externally capsulated in the inner pipe (11) and has a second communication path (12A) for the passage of gas for a radical reaction, plasma generating means that includes first and second electrodes (21, 22) respectively arranged in the first and second communication paths (11A, 12A) and a plasma power supply unit connected to the first and second electrodes (21, 22), a pair of caps (13) that block both ends of the inner pipe (11) and the outer pipe (12), a first inlet (11b) that communicates with the first communication path (11A) and receives the inflow of the treatment target water, a first outlet (11c) through which the treatment target water flows out after inflow through the first inlet (11b) and passage through the first communication path (11A), a second inlet (12b) that is connected to an air supply source (AS) providing the gas for a radical reaction, and a second outlet (12c) through which a radial generation source generated by plasma discharge of the gas for a radical reaction flowing in through the second inlet (12b) is discharged, in which the inner pipe (11) and the outer pipe (12) maintain a gap of 2 to 10 mm. According to the present invention, ozone yield can be improved.

Description

TECHNICAL FIELD [0001] The present invention relates to a slim type plasma water treatment apparatus,

The present invention relates to a plasma water treatment apparatus, and more particularly to a plasma water treatment apparatus capable of increasing the yield of ozone by minimizing an interval between an inner tube and an outer tube, and by configuring a wiring board capable of wiring a plasma electrode as a cable, And more particularly, to a slim plasma enhanced water treatment apparatus suitable for realizing safety and performance.

Recently, plasma high-temperature water treatment technology, which is a technique for treating contaminated water by high-pressure plasma discharge and ozone injection, has been spotlighted. As a representative technique thereof, the present invention has been filed by the applicant of the present invention and is disclosed in Japanese Patent Application No. 10-1157122 &Quot; Plasma elevation water treatment apparatus "

The above-mentioned Patent No. 10-1157122 (Plasma Advanced Water Treatment System) is a system for eliminating Escherichia coli and various bacteria by using a plasma discharge, and for eliminating various refractory organic substances through a radical generating source such as ozone A plasma discharge electrode is introduced into a dual conduit having a first communication path for a gas and a second communication path for a gas for radical reaction and a contact reaction between the water to be contaminated and a radical generating source such as ozone, So as to perform water treatment.

In the plasma enhanced water treatment apparatus according to the above-mentioned Japanese Patent No. 10-1157122, the second electrode is wound on the outer peripheral surface of the inner tube, and the space of the second communication passage is relatively large, The gas for radical reaction (for example, oxygen) passing through the communication path is not properly contacted with the second electrode, passes through the outer tube and the inner tube, and mainly passes along the inner circumferential surface of the outer tube. The plasma discharge efficiency is lowered and the ozone generation rate is remarkably lowered.

A technique developed to solve such a problem is known as a " plasma altitude water treatment apparatus " according to Japanese Patent Application No. 10-1265489 (published on May 20, 2013).

The technology of the above-mentioned Japanese Patent No. 10-1265489 is characterized in that the outer tube 10 of the plasma discharge tube is formed so that the bottleneck portion 12 whose inner diameter is narrower than the central portion of the outer tube 10 is formed, And increases the contact of the inflowing gas to the second electrode 53 while passing through the bottleneck portion 12, thereby increasing the ozone generation rate.

That is, the outer tube is formed in close contact with the inner tube only for the portion where the second electrode exists, and the outer tube is formed in the shape of a dumbbell.

However, the plasma enhanced water treatment apparatus according to the above-mentioned Patent No. 10-1265489 has the following problems.

First, since the first and second caps are formed in a dumbbell-like structure in which only the portion having the second electrode is brought into close contact with the inner tube, and the first and second caps still maintain the conventional shape, the portions having the first and second caps are bulky The total installation space of the product is increased and the number of the discharge tubes that can be installed in one drum is relatively small.

Secondly, since the bottleneck portion and the outer portion fixed to the first and second caps are separately manufactured and then joined together, the productivity of the product is deteriorated.

Thirdly, as a glass material, blowing air to produce an outer tube is not a universal type, so that it is difficult to design a mold and a precise dimension can not be manufactured.

Fourth, due to technical limitations, it is inevitable to form the outer tube 12 into a dumbbell shape due to the fact that the upper and lower ends of the dual tube can not be thinned due to reasons such as electrode attachment, sealing, oxygen and wastewater supply tube mounting structure.

It is an object of the present invention to provide a slim plasma enhanced water treatment system,

First, the inner tube and the outer tube are made straight and the gap is minimized to improve the ozone production yield,

Second, the structure of the pipe fixing ring facilitates the installation of the inner pipe and the outer pipe, and at the same time, the interval between the inner pipe and the outer pipe can be minimized,

Third, the wiring substrate facilitates wiring of the first and second electrodes, thereby enhancing the wiring workability and ensuring safety from a high voltage,

Fourth, the leak detection terminal capable of detecting leakage by the second communication path of the external pipe is modularized,

Fifth, the present invention provides a slim plasma high-altitude water treatment apparatus that is configured to have both an inner pipe and an outer pipe in an intuitive manner, thereby improving the product productivity and increasing the installation space efficiency.

According to another aspect of the present invention, there is provided a slim plasma enhanced water treatment system comprising: an inner tube having a first communication passage through which water to be treated passes; and a second communication member which is enveloped in the inner tube and through which the radical reaction gas passes A plasma generating unit including first and second electrodes arranged in the first and second communication paths and a plasma power source connected to the first and second electrodes; A first inlet communicating with the first communication passage to receive the water to be treated and a second inlet communicated with the first communication passage and passing through the first communication passage, A second inlet connected to a gas supply source for providing a gas for radical reaction, and a second gas inlet for introducing a radical generated by the plasma discharge into the second inlet, And a second discharge port through which a circle is discharged, wherein the inner tube and the outer tube are provided so as to be close to each other so that the second electrode wound on the inner tube adheres to the outer tube .

In the slim plasma enhanced water treatment system of the present invention, the ring fastening portion is formed on the inside of the cap so as to protrude outward, and the ring tightening portion is fastened to seal the fluid between the inner pipe and the outer pipe, And a tube fixing ring for fixing the two electrodes so as to be close to each other so as to be attached to the outer tube.

The slim plasma enhanced water treatment apparatus of the present invention further includes a wiring board mounted on an outer surface of the pair of caps and having an electrode connector for connecting the power supplied from the power source unit to the first and second electrodes by an electrode connection cable .

The slim plasma enhanced water treatment apparatus according to the present invention further includes a water leakage sensing electrode formed on one side of the cap and configured to include a pair of conductive members for sensing that water to be treated flowing through the inner pipe leaks into the second communication passage And the leak detection electrode is fixed to a sensor holder of a nonconductive material and installed in the cap.

The slim plasma enhanced water treatment apparatus having the above-described configuration has the following effects.

First, there is an effect that ozone production yield can be improved by minimizing the gap between the inner tube and the outer tube.

Second, the structure of the pipe fixing ring facilitates the installation of the inner pipe and the outer pipe, and at the same time, the interval between the inner pipe and the outer pipe can be minimized.

Third, the configuration of the wiring board facilitates wiring of the first and second electrodes, thereby enhancing the wiring workability and securing safety.

Fourth, there is an effect that the installation workability is improved by modularizing the leak detection terminal which can detect the leak by the second communication channel of the external pipe.

Fifth, both the inner pipe and the outer pipe are formed as an intuitive pipe, thereby improving the productivity of the product and increasing the installation space efficiency.

1 is an external perspective view of a slim plasma enhanced water treatment apparatus according to an embodiment of the present invention.
2 is a cross-sectional view taken along the line AA in Fig.
3 is a cross-sectional view taken along the line BB of Fig. 1 and an enlarged view of the main part.
4 is a conceptual view of wiring of the upper substrate 51 for cabling to the second electrode in the slim plasma enhanced water treatment apparatus according to an embodiment of the present invention.
5 is a conceptual view of wiring connection of the first electrode and the lower substrate 52 for cabling to the leak detection terminal 61 in the slim plasma enhanced water treatment apparatus according to the embodiment of the present invention.
6 is a perspective view of a blocking member 16 in a slim plasma enhanced water treatment apparatus according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a slim plasma enhanced water treatment system according to the present invention will be described in detail with reference to the accompanying drawings.

1 to 3, a slim plasma enhanced water treatment system according to an embodiment of the present invention includes an internal space (not shown) in which a first communication passage 11A through which water to be treated supplied from a water source W is formed An outer tube 12 enclosing the inner tube 11 coaxially and forming a second communication passage 12A through which a radical reaction gas (for example, oxygen) passes; (Not shown) connected to the first and second electrodes 21 and 22 and the first and second electrodes 21 and 22 respectively arranged on the first and second electrodes 11A and 12A, A first inlet 11b communicating with the first communication passage 11A to which the object water is introduced and a second inlet 11b communicating with the first communication passage 11A, A first outlet 11c flowing into the first communication passage 11b and passing through the first communication passage 11A, and a gas supply source And a second outlet 12c through which a radical generating source (e.g., ozone) generated by a plasma discharge is discharged from the radical reaction gas introduced into the second inlet 12b The inner tube 11 and the outer tube 12 are in the form of an elongated tube so that the second electrode 22 wound on the inner tube 11 is attached to the outer tube 12 And the inner tube 11 and the outer tube 12 are spaced from each other by a distance of 2 to 10 mm.

Since the radical reaction gas (oxygen) moves very close to the second electrode 22 when the outer tube 12 is separated from the inner tube 11 to such an extent that the outer tube 12 almost adheres to the first electrode 21, (Ozone) is improved.

In addition, even when a small electric power is applied, the same ozone can be generated. As a result, there is an advantage that the power consumption can be reduced and the maintenance cost of the apparatus can be reduced.

When the distance between the inner tube 11 and the outer tube 12 is less than 2 mm (i.e., the gap is too narrow), the heat generated in the electrode is transmitted to the outer tube 12 At this time, as the material of the outer tube is glass, the ozone is reduced to oxygen again when the temperature rises to 60 degrees or more, and the ozone yield drops to 50% or less.

If the distance between the inner tube 11 and the outer tube 12 is too wide (for example, exceeding 10 mm), the ozone yield is lowered outside the plasma discharge region.

Meanwhile, the plasma altitude water treatment apparatus according to an embodiment of the present invention includes a water tank 1 that supplies water to be treated to the first communication passage 11A and receives a radical generating source discharged from the second outlet 12c .

Preferably, the first communication passage 11A is filled with a plurality of dielectric beads 30 that randomly move in accordance with the passage of the water to be treated and generate a stable potential in the first communication passage.

In the slim plasma enhanced water treatment system according to the embodiment of the present invention, a ring fastening portion 13a is formed on the inside of the cap 13 so as to be outwardly circularly formed, and the ring fastening portion 13a And a tube fixing ring (not shown) for sealing the fluid of the inner tube 11 and the outer tube 12 and fixing the gap between the inner tube 11 and the outer tube 12 while keeping the gap between 2 and 10 mm 14) are further included.

By adopting the tube fixing ring 14 as described above, the outer tube 12 and the inner tube 11 can be fixed at the same time, and as a result, the interval between the outer tube 12 and the inner tube 11 can be kept very narrow, .

In the slim plasma enhanced water treatment system according to the embodiment of the present invention, the ring fastening portion 13a is formed with a packing fastening body 13b protruding inward from the ring fastening portion 13a, And the auxiliary grooves 14c for engaging with the female engaging portions 13b and 13b are recessed and formed. This has the advantage that the tube fixing ring 14 is more firmly fitted and fixed to the ring fastening portion 13a.

An inner fitting groove 14a for fitting and fixing the inner tube 11 is formed on the inner side of the tube fixing ring 14 and an outer tube (not shown) is formed on the outer side in the radial direction concentric with the inner fitting groove 14a An outer fitting groove 14b for fitting the outer fitting groove 12 is formed.

As described above, the inner tube 11 and the outer tube 12 can be provided at very narrow intervals by the constitution of the inner fitting hut 14a and the outer fitting hut 14a.

The tube fixing ring 14 is preferably made of a rubber material or an elastic synthetic resin material.

The first and second electrodes 21 and 22 are fixed to the electrode holders 21a and 22a and the electrodes 13 and 14 are formed on the outer surface of the cap 13, 21a, 22a are formed on the outer circumferential surface of the base portion 13a.

The cap 13 is formed with a threaded hole 13d in the longitudinal direction so that a plurality of fastening rods 13a and 13b are provided in order to rigidly mount the cap 13 by applying a pulling force to the pair of caps 13 inward. 41 are provided in the rod fastening hole 13d and a screw thread for fastening the fastening nut 41a is formed at the end of the rod fastening hole 13d to make the fastening more secure.

The plasma altitude water treatment apparatus according to the embodiment of the present invention further includes a mounting member 42 having a mounting hole 42a formed therein for mounting to the fixing member.

In a slim plasma enhanced water treatment apparatus according to an embodiment of the present invention, power supplied from a power supply unit (not shown) provided on the outer surface of the pair of caps 13 is divided into first and second electrodes 21 and 22 And a wiring board (51, 52) on which an electrode connector (53a) for connection by an electrode connecting cable (53b) is mounted.

According to this, when the first and second electrodes are connected to the connector 53a by the cable 53b, the first and second electrodes can be directly connected to each other. Thus, the wiring work of the first and second electrodes can be performed easily and quickly Since the wiring is neatly arranged by the cable and the connector, it is possible to secure the safety of the apparatus in which a high-voltage plasma voltage is applied.

(The upper and lower substrates 51 and 52 are referred to as the upper and lower substrates 51 and 52, respectively), the first and second electrodes 21 and 22 And mouth portions 51a and 52a are formed.

The electrode connectors 53a mounted on the wiring boards 51 and 52 are connected by the first jumping cable 53c and the wiring boards 51 and 52 are electrically connected by the copper foil pattern 53a '

4 (a) is a plan view of the upper surface of the plasma altitude water treatment apparatus, showing the electrode connection state of the upper substrate 51, and FIG. 4 (b) FIG. 5 is a bottom view of the bottom surface of the plasma altitude water treatment apparatus, showing the electrode connection state of the lower substrate 52. As shown in FIG.

As shown in Figs. 4 and 5, three electrode connectors 53a are mounted on the wiring boards 51 and 52, and an electrode connector 53a at the center among the three electrode connectors 53a is connected to the first, The first and second electrodes 21 and 22 are connected in parallel to the electrode connector 53a to receive the plasma power.

The wiring boards 51 and 52 provided in the respective plasma elevation water treatment apparatuses are connected in series by an electrode jumper cable 53c.

When the electrode jumper cable 53c is inserted into the electrode connector 53a and the electrode connecting cable 53b is inserted into the central electrode connector 53a between the respective plasma altitude water treatment apparatuses, 21, and 22 are completed, wiring work of electrodes can be performed quickly and conveniently.

In the slim plasma enhanced water treatment system according to the embodiment of the present invention, the inner and outer pipes 12 are installed vertically and are installed in the cap 13 such that their ends are located in the second communication passage 12A, (61) formed of a pair of conductive members for sensing that the number of objects to be treated flowing through the first communication path (11) is leaked to the second communication path (12A), and the leakage sensing electrode And is fixed to a sensor holder 61a made of a nonconductive material.

 This makes it possible to detect the water leaked due to the water leaked due to the breakage of the inner tube 11 or the waterproof failure, and even if the inner tube 11 is broken, It is possible to prevent the problem that the water flows back to the gas supply source A1 for the radical reaction.

In the slim plasma enhanced water treatment system according to the embodiment of the present invention, the electrodes 61 are provided between the pair of leak detection electrodes 61 so that the electrodes 61 are spaced apart from each other by a predetermined distance, And a spacer 61a 'is further included.

5, the lower substrate 52 is connected to the first and second electrodes 21 and 22 by a sensor connection cable 54b, and is connected to the first and second electrodes 21 and 22 by a sensor connection cable 54b. And the sensor connector 54a is connected by the second jumper cable 54c and the sensor connectors 54a are electrically connected to each other by a copper foil pattern.

Three sensor connectors 54a are mounted on the lower substrate 52. A sensor connector 54a at the center of the three sensor connectors 54a is connected to a leak detection terminal 61, Cable 54c so that the leak detection terminal 61 is connected to the sensor connector 54a in parallel.

The sensor connectors 54a provided in the respective plasma altitude water treatment apparatuses are connected to each other in series by a sensor jumper cable 54c.

When the sensor jumper cable 54c is inserted into the sensor connector 54a and the sensor connection cable 54c is inserted into the sensor connector 54a at the center between the respective plasma altitude water treatment devices, It is possible to perform the wiring work quickly and conveniently.

In the meantime, in the slim plasma enhanced water treatment system according to the embodiment of the present invention, it is necessary to receive a leakage detection signal of the leakage detection terminal 61 to substantially cut off the power of the power source unit. In the case where, for example, when the number of objects to be treated leaking through the second communication path 12A is sensed, the leakage detection signal of the leakage detection terminal 61 is received and the driving of the plasma power source is stopped Output stop control circuit section for stopping the high-voltage output of the plasma power source section.

According to the above configuration, when the inner tube 11 is broken due to the high-pressure plasma discharge, the object water to be treated in the inner tube 11 flows out, and the water to be treated flows out from the leak detection terminal 61 So that the operation of the plasma power source unit can be stopped.

The operation of the power source unit can be stopped immediately when the inner tube 11 is broken due to the high voltage, so that the discharge tube (the inner tube and the outer tube and the assembly of the plasma generating means included therein) are used in the same sense throughout .] It is effective to prevent fire and electric shock caused by destruction.

In addition, the pair of leak detection electrodes 61 can be modularized by the sensor holder 61a, which makes it possible to easily and easily install the leak detection electrodes 61. FIG.

As shown in FIG. 3, the sensor holder 61a is installed so as to penetrate through the cap 13 and the tube fastening ring 14, and the upper end thereof is located inside the second communication passage 12A.

In the slim plasma enhanced water treatment system according to the embodiment of the present invention, both ends of the inner tube 11 are opened and spaced from both ends of the inner tube 11 to the center, And a stopper member 30 which is installed in close contact with the inner circumferential surface of the first communication passage 11A to block the passage of the dielectric bead 30 so as to pass the water to be treated flowing through the first communication passage 11A and prevent the dielectric bead 30 from being detached from the inner tube 11. [ and a spacer 16 is further included.

According to the above configuration, it is not necessary to seal both ends of the inner tube 11, so that workability of filling the dielectric bead 30 of the inner tube 11 and assembly workability of the product are improved, There is an advantage that a space for filling the dielectric bead 30 in the inner tube 11 can be freely set.

6, the blocking member 16 has a circular tubular body portion 16a to be brought into close contact with the inner circumferential surface of the inner tube 11 and a cylindrical body 16a which passes through the dielectric bead 30, And a mesh portion 16b formed at the distal end of the body portion 16a in the direction of the oil flow as a mesh.

Therefore, the size of the through hole 16b 'of the mesh portion 16b is determined so that the water to be treated (and the treated water) passes through but the dielectric bead 30 does not pass through.

An electrode fixing hole 16c for holding the center electrode 23 disposed in the inner tube 11 is formed at the center of the mesh portion 16b. There is an advantage that it is possible to prevent the shaking or the movement of the motor.

The blocking member 16 is formed of a plastic resin material and the rear end 16a 'of the body portion 16a is formed slightly larger than the front end. A cutout groove 16d is formed at the rear end 16a' There is an advantage that the tightening force when the blocking member 16 is inserted into the inner surface of the inner tube 11 is strengthened.

The first inlet 11b and the first outlet 11c are perpendicular to the longitudinal direction of the inner and outer pipes 11 and 12 so that the first inlet 11b and the first outlet 11c are perpendicular to the longitudinal direction of the inner and outer pipes 11 and 12. In the slim plasma enhanced water treatment apparatus according to the embodiment of the present invention, However, the present invention is not limited to this, and it may be installed parallel to the inner and outer tubes 11 and 12 so that the object to be treated may enter and exit in the direction parallel to the tubes 11 and 12. In this case Also belong to the technical scope of the present invention.

When the first inlet 12b and the second inlet are formed so as to be parallel to each other in the direction of the inner tube 11 and the outer tube 12 as described above, the discharge tube is installed upright in the large cylindrical drum There is an advantage that the number of installation is increased and space utilization is improved.

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or scope of the invention as defined in the appended claims. It is self-evident to those who have.

Therefore, the above-described embodiments are to be considered as illustrative rather than restrictive, and the present invention is not limited to the above description, but may be modified within the scope of the appended claims and equivalents thereof.

11: inner tube 11A: first communication path
11b: first inlet 11c: first outlet
12: outer tube 12A: second communication path
12b: second inlet port 12c: second outlet port
13: cap 13a: ring fastening portion
13b: ring fastening ring 13c: holder fastening portion
13d: bar tightening hole 14: tube fixing ring
14a: Inner-side fitting groove 14b: Outside fitting groove
14c: auxiliary groove 16: blocking member
21: first electrode 21a: first holder
22: second electrode 22a: second holder
30: dielectric bead 41:
41a: fastening nut 42: mounting member
42a: mounting hole 51: upper substrate
51a, 52a: Entanglement portion 52: Lower substrate
53a: Electrode connector 53a ': Copper foil pattern
53b: electrode connection cable 53c: jumper cable
54a: Sensor connector 54b: Sensor connection cable
54c: Sensor jumper cable 61: Leak detection sensor
61a: Sensor holder 61a ': Spacer
W: Suwon AS: Gas source

Claims (4)

An inner tube 11 in which a first communication passage 11A through which water to be treated passes is formed and a second communication passage 12A which is enveloped in the inner tube 11 and through which the radical reaction gas passes An external tube 12 and first and second electrodes 21 and 22 arranged in the first and second communication paths 11A and 12A and a plasma power source connected to the first and second electrodes 21 and 22, A pair of caps 13 fixed to the inner tube 11 and the outer tube 12 and a second inlet 13 communicating with the first communication path 11A and having a first inlet A first outlet 11c flowing into the first inlet 11b and passing through the first communication passage 11A and a gas supply source AS for providing a radical reaction gas, A second inlet 12b connected to the second inlet 12b, and a radical generating source generated by the plasma discharge of the radical reaction gas introduced into the second inlet 12b Elevation in a plasma treatment apparatus which comprises a second outlet (12c):
Wherein the inner tube 11 and the outer tube 12 are in the form of an elongated tube and the second electrode 22 wound around the inner tube 11 is provided so as to be close to the outer tube 12 Slim type plasma elevation water treatment system.
The method according to claim 1,
A ring fastening portion 13a is formed on the inside of the cap 13 so as to protrude outwardly,
The second electrode 22 wound around the inner tube 11 is sealed to the outer tube 12 by sealing the fluid between the inner tube 11 and the outer tube 12 by being fitted into the ring fastening portion 13a, Further comprising a tube fixing ring (14) for fixing the tube to be close to each other so as to be attached to the tube.
The method according to claim 1,
An electrode connector 53a is mounted on the outer surface of the pair of caps 13 and is connected to the first and second electrodes 21 and 22 by an electrode connection cable 53b And further comprising wiring boards (51, 52).
The method according to claim 1,
And a leakage detection electrode (61) composed of a pair of conductive members for detecting that the number of objects to be treated flowing through the inner pipe (11) leaks to the second communication passage (12A)
Wherein the pair of leak detection electrodes (61) are fixed to a sensor holder (61a) of a nonconductive material and are installed in the cap (13).

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