TW201335061A - Ozone production and ozone dissolution device - Google Patents

Abstract

To provide a device for producing ozone by causing discharge within a dielectric tube by the application of voltage to gas, and dissolving the ozone in a fluid. A device for producing ozone by causing plasma by discharge within a dielectric tube by the application of voltage to supplied gas and dissolving the ozone in a fluid, wherein the dielectric tube is disposed at the outer periphery of a Venturi tube to form an enclosed space, a source gas introduction port for supplying the source gas is provided on one side of the dielectric tube, an ozone discharge port for introducing the produced ozone into the Venturi tube is provided on the other side thereof, the interior of the enclosed space of the dielectric tube and a branch tube of the Venturi tube communicate with each other through an ozone transfer tube, the branch tube is provided with a check valve for preventing backflow of the fluid, a high-voltage electrode is placed on the outer side of the dielectric tube, and a ground electrode is disposed in the fluid within the Venturi tube or the fluid discharged from the Venturi tube.

Description

Ozone generation and ozone dissolving device

The present invention relates to a device for generating ozone in a dielectric tube by applying a voltage to a gas, and dissolving ozone in the fluid.

In recent years, in a sewage treatment facility, a chemical factory, a pharmaceutical factory, a food factory, etc., it is used for the sterilization of bactericidal substances such as bacteria, molds, and yeasts, aldehydes, sulfur compounds, and nitrogen compounds. Ozone generating device for decolorizing odor, excrement or dye waste liquid, and detoxifying harmful substances such as organic solvents.

This technique generally generates ozone by a discharge type ozone generator, and a gas-liquid mixing part such as a bubbler, an ejector, or a static mixer is mixed with water required for the treatment to make a gas-liquid contact.

However, in the conventional method, the distance between the ozone generating portion and the gas-liquid contact portion of the water to be treated is distant, and when the ozone generating portion transfers the ozone gas to the gas-liquid contact portion, there is a possibility due to the strong oxidation of ozone. Ozone is a very unstable gas and is easily decomposed into oxygen. Therefore, it is preferable to generate ozone as close as possible to a point of use.

This problem is provided with an ozone generator using an ozone generator in which a discharge electrode and a sensing electrode are provided in a cylindrical insulating substrate, and a water flow path inside, and water flowing through the flow path in the flow path. The smell of water injected into the ozone injector of the ozone obtained by the ozone generator An oxygen treatment device has been proposed (see, for example, Patent Document 1).

However, in the ozone treatment device for water, water to be cooled water flows inside the insulating substrate, and the discharge electrode provided on the outer circumferential surface of the insulating substrate is cooled by water flowing through the insulating substrate, but if water is At high temperatures, it is not cooled, and there is a problem that the amount of ozone generated is small.

Further, in another method, a corona discharge electrode is disposed on an outer peripheral surface of the cylindrical dielectric, and an outer cylinder is concentrically disposed outside the corona discharge electrode to form a sealed space, and the cylindrical dielectric is formed in the cylindrical dielectric An ozone-generating device that supplies a cooling liquid to the inside of the cylindrical dielectric and that cools the dielectric to the inside of the cylindrical surface and an ozone water-making apparatus using the ozone generator has been proposed (refer to For example, Patent Document 2).

However, in the case of the ozone generator and the ozone water producing apparatus using the ozone generator, it is necessary to provide electrodes on the outer peripheral surface and the inner peripheral surface of the cylindrical dielectric, particularly in a narrow cylindrical dielectric. It is difficult to say that the electrode is easily formed in the week, and it is known that the ozone concentration obtained by corona discharge is low and the ozone yield is also poor.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 2-157091

[Patent Document 2] Japanese Patent Laid-Open No. 2-184505

In view of the above problems, the inventors have carefully studied the results and provided an ozone generating and ozone dissolving device having the following features.

(1) A high-voltage electrode is provided on the outer wall of the outer tube of the double tube, and a ground electrode is disposed in the inner tube forming the text structure, and the fluid is passed into the inner tube, and the raw material is introduced into the gap between the inner wall of the outer tube and the outer wall of the inner tube. a gas (oxygen-containing gas) is applied with a voltage between the electrodes to cause a barrier discharge to generate ozone gas, and the generated ozone gas system is introduced into a narrow portion of an inner tube (Venturi tube), and Immediately dissolved into the fluid.

(2) A regulating valve is provided in a pipe connecting the discharge portion and the narrow portion, and a high concentration of ozone gas can be generated by arbitrarily controlling the pressure of the discharge portion.

The present invention relates to an ozone generating and ozone dissolving device which is a device for applying a voltage to a raw material gas to be supplied, thereby generating a discharge in a dielectric tube to generate ozone, and dissolving the ozone in a fluid. The utility model is characterized in that the dielectric tube is disposed on the outer circumference of the text tube to form a sealed space, and a material gas introduction port for supplying the material gas is provided on one side of the dielectric tube, and the other is provided for generating the material gas inlet port. The ozone is introduced into an ozone discharge port inside the duct, and a closed space of the dielectric tube is communicated with the branch pipe of the vent pipe by an ozone transfer pipe, and the branch pipe is provided with a wing door for preventing reverse flow of the fluid. In the check valve, a high voltage electrode is disposed outside the dielectric tube, and a ground electrode is disposed in the fluid inside the text tube or the fluid discharged from the text tube.

The present invention is an ozone generating and ozone dissolving device, which is A device that generates a voltage in a dielectric material to generate a discharge in the dielectric tube to generate ozone, and dissolves the ozone in a fluid to produce ozone water. The second feature is that the medium is disposed on the outer circumference of the rib tube. The electric tube forms a sealed space, and one of the dielectric tubes is provided with a material gas introduction port for supplying the material gas, and the other is provided for introducing the generated ozone into the inside of the rib tube. An ozone discharge port, wherein the sealed space of the dielectric tube is connected to the branch pipe of the venturi pipe by an ozone transfer pipe, and the branch pipe is provided with a wing gate check valve for preventing backflow of the fluid, on the outer side of the dielectric tube A high voltage electrode is arranged, and a ground electrode is arranged in the text tube.

The ozone transfer tube is provided with a regulating valve for adjusting the flow rate of the ozone, and the third feature is that the ground electrode is coated with glass.

It is the fifth feature that the dielectric tube is at least ceramic or glass, and the above-described tube has a sixth feature from any of ceramics, glass, resin, and metal.

In the seventh aspect, the dielectric tube and the venturi are made of quartz glass, and the gas-liquid ratio of 0.3 or less is the eighth characteristic of the material gas and the fluid.

A structure having a structure in which a fluid obtained by dissolving ozone is returned to the above-described venturi and the fluid is circulated is a ninth feature.

According to the ozone generating and ozone dissolving device of the present invention, the following excellent effects can be obtained.

(1) The ozone generating and ozone dissolving device of the present invention can be easily produced, can generate ozone at a high concentration, and efficiently dissolve ozone into a fluid.

(2) The distance between the fluid and the discharge portion is short, and the gas such as ozone generated in the discharge portion acts on the fluid immediately. Therefore, not only ozone but also radicals generated by the discharge can be used.

(3) When the generated ozone gas is introduced into the inside of the rib tube, an active species such as an OH radical can be generated due to the collapse of the ozone bubble, and decomposition of the compound which cannot be oxidatively decomposed by ozone can be performed.

(4) By adjusting the regulating valve provided in the branch pipe of the rib tube, the pressure of the discharge portion can be operated, and the generation of high-concentration ozone is possible, and the ozone concentration can be adjusted.

(5) By controlling the gas-liquid ratio of the gas introduced into the dielectric tube to the fluid, ozone water of a desired concentration can be easily produced.

(Embodiment 1)

Hereinafter, the first embodiment of the present invention will be described with reference to Figs. 2 and 3, but the present invention is not limited to the embodiment, and it goes without saying.

In Fig. 2, the ozone generating and ozone dissolving device of the present invention is composed of a dielectric tube 1, a text tube 2, a high voltage electrode 3, a ground electrode 4, a power source 5, a material gas introduction port 6, and an ozone gas discharge port 7. The branch pipe 8, the ozone transfer pipe 9, the wing gate check valve 10, and the regulating valve 11 are formed.

The dielectric tube 1 is a substantially cylindrical shape made of glass. The cross section of the dielectric tube 1 may be a quadrangle, a diamond, or a polygon, but with a high voltage electrode 3 It is preferable to use a circular shape in terms of ease of fitting or adjustment of the gap with the text tube 2 and ease of manufacture.

The text tube 2 is located on the same center of the dielectric tube 1, and is formed into a narrow portion like a general style tube. The cross section of the rib tube 2 may be a quadrangular shape, a rhombus shape, or a polygonal shape. Since the rib tube 2 functions as a dielectric material, the gap with the dielectric tube 1 is uniform, and the dielectric tube 1 is The same shape is preferred.

The heat pipe 2 is formed in a sealed structure by the dielectric tube 1, and the dielectric tube 1 is provided with ozone for introducing the raw material gas introduction port 6 of the source gas to one of the other, and discharging the generated ozone to the other. Spit out 7.

The flow system introduced into the text tube 2 may be supplied under pressure by a step, a pump, or the like, and a liquid system or a gas containing a liquid such as a vapor.

The gap formed by the dielectric tube 1 and the text tube 2 is transmitted through the ozone transfer tube 9 to communicate with the branch tube 8 protruding from the narrow portion of the text tube 2. If the fluid passes through the text tube 2, the pattern is A strong negative pressure is generated in the narrow portion of the tube 2 to suck in ozone generated in the gap between the dielectric tube 1 and the text tube 2.

The high voltage electrode 3 is disposed outside the dielectric tube 1 and connected to the power source 5. The material or shape of the electrode is not particularly limited. However, it is preferable that the dielectric tube 1 is formed into a sleeve structure so that the electrode does not deteriorate, and the electrolyzed water is sealed inside, and the stainless steel wire is inserted inside. The power source 5 is connected.

When the ground electrode 4 is provided with an electrode rod at the center of the rib tube 2, the fluid flows inside the rib tube 2, and the inside of the wenwan tube 2 is exerted. The role of grounding. Further, as shown in FIG. 3, the ground electrode 4 may be disposed in the water discharged from the text tube 2.

The ozone transfer pipe 9 is provided with a wing gate check valve 10 so that the fluid inside the passage pipe 2 does not flow back, and the regulator valve 11 is provided so that the flow rate of the ozone or the pressure of the discharge portion can be adjusted. The speed of the fluid can be arbitrarily determined, and it can be formed as a flow rate for the purpose of the fluid to be treated in accordance with the discharge frequency calculated from the power source frequency used. In order to dissolve a gas such as ozone generated by the discharge in the fluid, the ratio of the amount of the fluid to the gas is preferably 0.3 or less.

The material of the dielectric tube 1 is preferably ceramic or glass having plasma resistance, heat resistance, and ozone resistance, and is preferably quartz glass having a low dielectric constant.

The material of the rib tube 2 can be arbitrarily selected, but ceramics, glass, resin, and metal excellent in ozone resistance and durability are preferable, and quartz glass is preferred.

The material of the ground electrode 4 may be selected from a metal such as copper or stainless steel according to the nature of the fluid. However, if the metal component is eluted, such as when the electronic component is cleaned, the insulating compound may be applied to the ground electrode 4. Preferably, the quartz glass having a low dielectric constant and a small amount of dissolution of the fluid is preferred.

The raw material gas system to be introduced may be supplied by pressure by a blower, a steel cylinder, or the like, or may be supplied by a negative pressure generated when the fluid passes through the text tube 2, and is introduced through the raw material gas introduction port 6 in any case. To the inside of the dielectric tube 1. The raw material gas 12 is compatible with the fluid to be treated The purpose is arbitrarily determined, but when an active species such as ozone or OH radical is generated, it is sufficient to contain at least an oxygen gas.

When the apparatus of the present invention is used for water treatment, when the compound to be removed remains in the water treated once, the pump or the like is again used and sent to the inside of the text tube 2 of the apparatus, and the treatment may be repeated.

The material gas (oxygen-containing gas) 12 is introduced into the raw material gas inlet port 6, and the fluid is passed through the inside of the vent tube 2, and when a voltage is applied, the dielectric tube 1 of the portion where the high-voltage electrode 3 is disposed is placed. The inner wall and the outer wall of the text tube 2 are circumferentially discharged, and oxygen in the material gas 12 passing through the discharge portion is excited to generate ozone, and the generated ozone passes through the ozone discharge port 7 and the ozone transfer pipe 9, and It is introduced into the narrow portion of the text tube 2 and immediately dissolved into the fluid. Further, at this time, when the flow velocity ratio (gas-liquid ratio) of the material gas 12 to the fluid is decreased, a strong negative pressure is generated. Therefore, when the gas-liquid mixture is mixed, the ozone is crushed and OH radicals are generated.

(Embodiment 2)

Next, a second embodiment of the present invention will be described with reference to Fig. 4. However, the present invention is not limited to the embodiment, and it goes without saying.

The configuration of the apparatus other than the position of the ground electrode is the same as that of the first embodiment, and thus the description thereof is omitted.

The grounding electrode 4 may be the outer side or the inner side of the text tube 2, as shown in FIG. 4, the text tube 2 may be formed into a sleeve structure, and the electrolyzed water may be sealed inside, and the stainless steel wire may be inserted inside. Power connection, at this time, the high voltage electrode 3 of the dielectric tube 1 and the grounding voltage of the text tube 2 can also be replaced. Extreme 4.

Further, if the text tube 2 is made of metal, the text tube 2 itself functions as the ground electrode 4.

(Embodiment 3)

Next, a third embodiment of the present invention will be described with reference to Fig. 9, but the present invention is not limited to the embodiment, and it goes without saying.

Since the configuration of the device is the same as that of the first embodiment, the description thereof is omitted.

As shown in Figure 9, the fluid passing through the apparatus of the present invention was passed without circulation.

[Examples]

In the present invention, the above-described embodiment is used to carry out tests for photographing, ozone concentration, and dissolved ozone concentration at the time of discharge. The measurement method of the test is as follows.

(1) Determination of ozone concentration

Gas phase ozone concentration meter: OZ-3O made by East Asia DKK Co., Ltd.

An ozone concentration sensor was inserted into the upper portion of the water tank, and the measurement was performed using a gas phase ozone concentration meter.

(2) Determination of dissolved ozone concentration

Dissolved Ozone Concentration Meter: OZ-2O made by East Asia DKK Co., Ltd.

A dissolved ozone concentration sensor was placed in the circulation tank to perform measurement.

[Example 1]

A flow chart of the experimental setup is shown in FIG. The experimental apparatus is composed of an ozone generating and ozone dissolving device, and a water receiving tank (15L) that receives the treated water discharged from the ozone generating and ozone dissolving device, and the ozone generating and ozone dissolving device can be cyclically transferred by the circulating tank. A pump is arranged to perform piping, an ozone concentration sensor is disposed on the surface of the water receiving tank, and a dissolved ozone concentration sensor is disposed in the lower portion of the water surface. Further, the gas introduction port of the ozone generating and ozone dissolving device is connected to the oxygen cylinder by a pipe. An ozone generating and ozone dissolving device is shown in FIG. The dielectric tube of the ozone generating and ozone dissolving device and the quartz tube of the literary tube system are made of a narrow tube of the text tube, and the primary side is a double tube. The tap water is passed through the text tube (inner diameter 12 mm, outer diameter 14 mm, drain portion diameter 5 mm), and the gap between the dielectric tube (inner diameter 16 mm, outer diameter 18 mm) and the text tube (1 mm) is Oxygen cylinders flow oxygen. The oxygen in the gap between the rib tube and the dielectric tube is discharged into the gap between the rib tube and the dielectric tube to form ozone, but the generated ozone is introduced into the narrow portion of the inner tube of the rib tube. Pipe connection. The pipe system is provided with a valve for adjusting the pressure of the discharge portion, and a wing gate check valve is provided so that the tap water passing through the pipe does not flow back from the narrow portion.

In addition, the dielectric tube system is a sleeve structure (inner 5 mm, length 100 mm), a 35% sodium chloride solution is sealed inside the sleeve, and a stainless steel wire is inserted to form a high voltage electrode, and the power source is connection. On the other hand, a grounding electrode made of stainless steel having a diameter of 2 mm was inserted into a venturi through which the tap water passed, and was connected to a power source.

The experimental system started the pump and used tap water at a flow rate of 30 L/min. On the other hand, oxygen was introduced into the ring by an oxygen cylinder, and a voltage (12 kV, 7 kHz) was applied to discharge the oxygen to measure the amount of ozone generated and the concentration of ozone water. As a result, as shown in Fig. 5, the ozone concentration after 30 minutes from the start of discharge was 10,500 ppm, and as shown in Fig. 6, the dissolved ozone concentration was 3.75 ppm.

[Embodiment 2]

In the same manner as in Example 1 except that the concentration of the methylene blue was 5 mg/L, the change over time in the amount of ozone generated was shown in Fig. 7, and the time of decolorization of the methine blue was shown. The changes are shown in Figure 8.

[Comparative Example 1]

The addition of the t-BuOH as an OH radical supplement to 1 mM was carried out in the same manner as in Example 2, and the time-dependent change in the amount of accumulated ozone was shown in Fig. 7, and the amount of methine blue decolorization was shown. The change over time is shown in Figure 8. From this result, irrespective of the generation of ozone, the decolorization rate was lowered by the addition of t-BuOH, suggesting the formation of OH radicals by the plasma generating apparatus.

[Example 3]

The amount of ozone generation and the concentration of ozone water were measured in the same manner as in Example 1 except that a ground electrode was disposed in the water discharged from the rib tube (see FIG. 3). As a result, as shown in FIG. 5, the discharge starts 30 The generated ozone concentration after the minute was 5,400 ppm, and as shown in Fig. 6, the dissolved ozone concentration was 1.57 ppm.

[Example 4]

In the same manner as in Example 1, except that a ground electrode was disposed outside the rib tube, the amount of ozone generated and the concentration of ozone water were measured (see FIG. 4). As a result, as shown in Fig. 5, the ozone concentration after 30 minutes from the start of discharge was 10,850 ppm, and as shown in Fig. 6, the dissolved ozone concentration was 3.84 ppm.

[Example 5]

The ozone generation amount and the ozone water concentration were measured in the same manner as in Example 1 except that the ground electrode was coated with a stainless steel wire and the applied voltage was (15 kV, 7 kHz). As a result, as shown in Fig. 5, the ozone concentration after 30 minutes from the start of discharge was 9,400 ppm, and as shown in Fig. 6, the dissolved ozone concentration was 3.28 ppm.

[Embodiment 6]

Except that the pressure of the gap (discharge portion) between the rib tube and the dielectric tube was 107 kPa, the amount of ozone generation was performed in the same manner as in the first embodiment except that the regulating valve connected to the branch pipe of the rib tube was adjusted. Determination of ozone water concentration. As a result, as shown in Fig. 5, the ozone concentration after the start of discharge 30 minutes was 11,750 ppm, and as shown in Fig. 6, the dissolved ozone concentration was 4.15 ppm.

[Embodiment 7]

The ozone generation amount was performed in the same manner as in Example 6 except that the pressure of the gap (discharge portion) between the rib tube and the dielectric tube was 117 kPa, and the adjustment valve connected to the narrow portion of the rib tube was adjusted. And determination of ozone water concentration. As a result, as shown in Fig. 5, the ozone concentration after the start of discharge was 13150 ppm, and as shown in Fig. 6, the dissolved ozone concentration was 4.68 ppm.

[Embodiment 8]

As shown in Fig. 9, the ozone water concentration was measured in the same manner as in Example 1 (gas-liquid ratio 0.1) except that the tap water was continuously discharged without circulation. As a result, as shown in Fig. 10, the ozone dissolution efficiency was 57%.

[Embodiment 9]

The ozone water concentration was measured in the same manner as in Example 8 except that the flow rate of the tap water was 10 L/min (gas-liquid ratio: 0.3). As a result, as shown in FIG. 10, the ozone dissolution efficiency was 23%.

[Comparative Example 2]

The ozone water concentration was measured in the same manner as in Example 8 except that the flow rate of the tap water was 7.5 L/min (gas-liquid ratio: 0.4). As a result, as shown in FIG. 10, the ozone dissolution efficiency was 17%.

[Embodiment 10]

The dielectric tube 1 and the text tube 2 of the ozone generating and ozone dissolving device are made of quartz glass, and the narrow portion of the text tube 2 is a double tube (see Fig. 4). In the style tube 2 (inner diameter 12 mm, outer diameter 14 mm, drain portion diameter 5 mm), tap water is passed through, and the gap between the dielectric tube 1 (inner diameter 19 mm, outer diameter 21 mm) and the text tube 2 (1 mm) ) The oxygen is circulated from the oxygen cylinder. The oxygen in the gap between the text tube 2 and the dielectric tube 1 is discharged into the gap between the text tube 2 and the dielectric tube 1 to become ozone, but the generated ozone is introduced into the inside of the text tube 2. The tube is connected in the manner of the narrow portion of the tube. Here, the pipe system is provided with a valve regulating valve 11 that adjusts the pressure of the discharge portion and includes a winged door check valve 12 so that the tap water passing through the inside of the pipe 2 does not flow back from the narrow portion.

In addition, the text tube 2 and the dielectric tube 1 are formed into a sleeve structure (internal 5 mm, length 100 mm), a 35% sodium chloride solution is sealed inside the sleeve, and stainless steel is inserted inside the sleeve of the text tube 2. The wire is formed into a ground electrode 4, and a stainless steel wire is inserted into the sleeve of the dielectric tube 1 to form a high voltage electrode 3, which is connected to a power source.

In the experiment, the tap water was passed at a flow rate of 10 L/min, and oxygen was introduced into the oxygen cylinder at a flow rate of 3 L/min, and a voltage (15 kV, 7 kHz) was applied to discharge, and the temperature of the electrode was measured using a non-contact thermometer. Consume power. As a result, as shown in FIG. 11, the electrode temperature at 30 minutes after the start of discharge is 42.3 ° C for the high voltage electrode. The ground electrode is 28.1 °C. Further, as shown in FIG. 12, the power consumption is 35 W.

[Comparative Example 3]

The tap water was passed through in the same manner as in Example 10, and the electrode temperature was measured using a non-contact thermometer to measure the power consumption. As a result, as shown in Fig. 11, the electrode temperature 30 minutes after the start of discharge was 62.3 ° C for the high voltage electrode and 66.6 ° C for the ground electrode. Further, as shown in FIG. 12, the power consumption is 38 W.

1‧‧‧ dielectric tube

2‧‧‧文管

3‧‧‧High voltage electrode

4‧‧‧Ground electrode

5‧‧‧Power supply

6‧‧‧Material gas inlet

7‧‧‧Ozone spitting

8‧‧‧ branch

9‧‧Ozone transfer tube

10‧‧‧wing door check valve

11‧‧‧Regulator

12‧‧‧Material gases

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a flow chart showing the experimental apparatus in the first and second embodiments of the present invention.

Fig. 2 is a view showing an ozone generating and ozone dissolving device according to a first embodiment of the present invention.

Fig. 3 is a view showing another ozone generating and ozone dissolving device according to the first embodiment of the present invention.

Fig. 4 is a view showing an ozone generating and ozone dissolving apparatus according to a second embodiment of the present invention.

Fig. 5 is a graph showing the transition of the generated ozone concentration for each voltage application time in Example 1 and Example 3 to Example 7 of the present invention.

Fig. 6 is a graph showing the transition of the dissolved ozone concentration for each voltage application time in Example 1 and Example 3 to Example 7 of the present invention.

Figure 7 shows the growth of each processing time in Example 2 and Comparative Example 1. A graph showing the amount of change in the amount of ozone generated.

Fig. 8 is a graph showing the transition of the amount of methine blue decolorization per treatment time in Example 2 and Comparative Example 1.

Fig. 9 is a flow chart showing the experimental apparatus in the third embodiment of the present invention.

Fig. 10 is a graph showing the relationship between the gas-liquid ratio and the dissolution efficiency in Examples 8 to 9 and Comparative Example 2 of the present invention.

Fig. 11 is a graph showing electrode temperatures in Example 10 and Comparative Example 3 of the present invention.

Fig. 12 is a graph showing power consumption in Example 10 and Comparative Example 3 of the present invention.

Claims (9)

An ozone generating and ozone dissolving device which is a device for applying a voltage to a raw material gas to be supplied, thereby generating a discharge in a dielectric tube to generate ozone, and dissolving the ozone in a fluid, characterized in that The dielectric tube is disposed on the outer circumference of the tube to form a sealed space, and a raw material gas introduction port for supplying the material gas is provided in one of the dielectric tubes, and the generated ozone is introduced to the other side. An ozone discharge port inside the duct, the sealed space of the dielectric tube is connected to the branch pipe of the vent pipe by an ozone transfer pipe, and the branch pipe is provided with a wing gate check valve for preventing backflow of the fluid. A high voltage electrode is disposed outside the dielectric tube, and a ground electrode is disposed in the fluid inside the text tube or the fluid discharged from the tube. An apparatus for generating ozone, which is a device for applying ozone to a source gas to be supplied, thereby generating a discharge in a dielectric tube to generate ozone, and dissolving the ozone in a fluid to produce ozone water. The dielectric tube is disposed on the outer circumference of the rib tube to form a sealed space, and a raw material gas introduction port for supplying the material gas is provided on one side of the dielectric tube, and the generated material is provided on the other side. The ozone is introduced into an ozone discharge port inside the duct, and a closed space of the dielectric tube is communicated with a branch pipe of the vent pipe by an ozone transfer pipe, and the branch pipe is provided with a wing stop for preventing fluid from flowing backward. In the return valve, a high voltage electrode is disposed outside the dielectric tube, and a ground electrode is disposed in the text tube. An ozone generating and ozone dissolving device according to claim 1 or 2, wherein the ozone transfer pipe is provided with a regulating valve for adjusting a flow rate of the ozone. The ozone generating and ozone dissolving device according to any one of claims 1 to 3, wherein the ground electrode is coated with glass. The ozone generating and ozone dissolving device according to any one of claims 1 to 4, wherein the dielectric tube is at least one of ceramics and glass. The ozone generating and ozone dissolving device according to any one of claims 1 to 5, wherein the said tube is made of any one of ceramics, glass, resin, and metal. The ozone generating and ozone dissolving device according to any one of claims 1 to 6, wherein the dielectric tube and the ray tube are made of quartz glass. The ozone generating and ozone dissolving device according to any one of claims 1 to 7, wherein the amount of the raw material gas to be supplied and the fluid is 0.3 or less. The ozone generating and ozone dissolving device according to any one of claims 1 to 8, which has a structure in which a fluid dissolved in ozone is returned to the above-described venturi and the fluid is circulated.