JP2002069679A - Ozonizer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ozonizer which stably produces ozone (ozone water) even when normal tap water is directly supplied to an electrolysis part without using a water softener. SOLUTION: This ozonizer comprising an anode of an electrode 2 consisting of a catalyst metal, which contacts with one side of an ion exchanging membrane 1, a cathode of an electrode 3 consisting of a metal which contacts with the other side, and in which raw material water 10 is flown along with the one side face of the anode side, and direct current voltage is applied to the anode side and the cathode side to generate ozone in the anode side, is characterized by allowing the other side as the above cathode side to contact cleaning water 11 containing electrolytes and discharging calcium ions and magnesium ions from the ion exchanging membrane 1 to the cleaning water 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ozonizer, and more particularly, to electrolyzing raw water,
The present invention relates to an ozonizer referred to as an electrolytic ozonizer in which ozone is mixed in oxygen generated on the anode side.

[0002]

2. Description of the Related Art Conventionally, an electrode made of a catalytic metal is in contact with one surface of an ion exchange membrane to form an anode, and an electrode made of a metal is made in contact with an electrode made of metal on the other surface, and one surface of an anode is formed. An ozonizer has been proposed in which raw water is allowed to flow along the sides, and a DC voltage is applied to the anode side and the cathode side to generate ozone on the anode side. In this ozonizer, very efficient electrolysis occurs because the ion exchange membrane becomes a solid electrolyte and the bipolar electrodes face a short distance of several hundred microns, and some ozone is mixed with oxygen generated on the anode side. Are known. It is also known that the use of platinum or the like on the anode side increases the amount of ozone generated by the catalytic function.

However, when the above-mentioned ozonizer is used for a long time, inorganic substances such as calcium and magnesium contained in water are deposited and deposited between the electrode and the ion-exchange membrane to increase the electric resistance value. There is a problem that electrolysis will not occur soon. The most typical example of the conventional method for solving this problem is that pure water is used as raw water, and when raw water is obtained from commercial water supply, water is softened through a water softener. However, the method using the water softener has a problem that the apparatus becomes large, and furthermore, regeneration of the water softener requires a great deal of labor and materials.

[0004] There is also a proposal to reverse the polarity of energization at regular intervals, called automatic cleaning. This automatic cleaning is based on the idea that electrons are emitted from the cathode side and inorganic substances flow out together with the electrons.In practice, however, inorganic substances are deposited and deposited on both the cathode side and the anode side. There is a problem that it is not effective.

Further, the present inventors have tried a method of flowing cooling water to the cathode side of the ion exchange membrane in order to improve ozone generation efficiency. This kind of ozone water is desirably 20 ° C. or lower, and it is known that the ozone concentration is improved by cooling the raw water. However, the ozone water used should be at room temperature or higher than room temperature, and its oxidizing power can be used most effectively. Although a slight improvement in efficiency was recognized in this method, no remarkable effect was confirmed. It has been said that ozone water cannot be produced with an ozonizer using this type of ion exchange membrane in hot water of 30 ° C. or higher.

[0006]

DISCLOSURE OF THE INVENTION The present invention has been studied to solve the above-mentioned problems. The present invention supplies ordinary tap water directly to the electrolyzing section without using a water softener, and furthermore, 30 minutes.
It is an object of the present invention to provide an ozonizer capable of stably obtaining ozone (ozone water) even when hot water of not less than ° C is used.

[0007]

In order to achieve the above object, the present invention provides an ion exchange membrane 1 in which an electrode 2 made of a catalytic metal is brought into contact with one surface of an ion exchange membrane 1 to form an anode, and the other surface is made of metal. The electrode 3 is contacted to form a cathode side, the raw water 10 is allowed to flow along one side of the anode side, and a DC voltage is applied to the anode side and the cathode side to generate ozone on the anode side. In the ozonizer, a technical means is provided in which the other side, which is the cathode side, is brought into contact with the washing water 11 of the electrolyte.

The present inventor has studied and observed trends of calcium ions and magnesium ions which are main components of hard water components when hard water is electrolyzed using the ion exchange membrane 1. Therefore, in a certain type of ion exchange membrane (trade name: Nafion 450, manufactured by DuPont, USA), calcium ions and magnesium ions move from the anode side to the cathode side through the ion exchange membrane 1 in the electrolysis. .
When the calcium ions and the magnesium ions move to the cathode side, the hydrogen that has moved at the same time is gasified and continuously separated and easily released from the ion exchange membrane 1, but the calcium ions and the magnesium ions stay there. Then, they accumulate around the ion exchange membrane 1 and the electrode 3 on the cathode side to obstruct the passage of current. ,as a result,
The electric resistance increased with the progress of the electrolysis. Since it is difficult for calcium ions and magnesium ions to be released from the cathode side of the ion exchange membrane, the smooth movement of calcium ions and magnesium ions in the ion exchange membrane is hindered, and the surface of the ion exchange membrane 1 on the anode side is disturbed. Calcium ions and magnesium ions were also deposited around the electrode 2.

Therefore, it is convinced that deposition can be prevented if calcium ions and magnesium ions are efficiently released from the cathode side of the ion exchange membrane 1 and the conditions for smooth movement of these calcium ions and magnesium ions are adjusted. The cleaning of the cathode side was continued by circulating pure water as washing water on the cathode side of the ion exchange membrane, but calcium ions and magnesium ions hardly moved into the pure water. However, when the washing water 11 (not necessarily circulated) is used as an electrolyte such as an aqueous solution of sodium chloride, calcium ions and magnesium ions exhibit an action of efficiently moving into the washing water 11. Is confirmed.

Next, the invention according to claim 2 is directed to the ion exchange membrane 1
An electrode 2 made of a catalytic metal is in contact with one surface of the ion exchange membrane 1 to form an anode, and an electrode 3 made of a metal is made in contact with the other surface of the ion exchange membrane 1 to form a cathode. In an ozonizer that applies a DC voltage to the anode side and the cathode side to generate ozone on the anode side while allowing the raw water 10 to flow along the electrolyte water, the washing water for the electrolyte is formed along the other side that is the cathode side. In this case, a technical measure characterized by flowing the eleventh is adopted.

Therefore, in the ozonizer of the present invention, in addition to the function of the first aspect, the washing water 11 is caused to flow along the other side which is the cathode side, so that calcium ions and magnesium ions are further added. This has the effect of increasing the release efficiency.

Next, the invention of claim 3 provides the ion exchange membrane 1
An electrode 2 made of a catalytic metal is in contact with one surface side to form an anode side, and an electrode 3 made of a metal is made in contact with the other surface to form a cathode side. And an ozone generator that generates ozone on the anode side by applying a DC voltage to the anode side and the cathode side, wherein the electrode 2 made of the catalyst metal on one side is made of a platinum wire net, and the other side is The electrode 3 is made of a corrosion-resistant metal wire mesh, and along the other side of the ion-exchange membrane 1 that is the cathode side, an electrolysis having a conductivity of 300 μs · cm (microsievert centimeter) or more. The technical means is characterized in that the washing water 11 composed of a liquid aqueous solution is allowed to flow.

According to the present invention, the electrode 2 made of a catalyst metal on one side is made of a platinum wire netting, and the electrode 3 made of a metal on the other side is made.
Is composed of a corrosion-resistant metal wire mesh, a strong discharge field forms a large number of boundary portions between a portion where the wire mesh is in contact with the ion exchange membrane 1 and a portion where the wire mesh is not in contact with the ion-exchange membrane 1, thereby enabling an efficient electrolysis. Present. The fact that platinum exhibits an ozone generation catalytic action is a conventionally known action.

Along the other side of the ion exchange membrane 1, which is the cathode side, a washing water 11 made of an aqueous solution of an electrolyte having a conductivity of 300 μs · cm (microsievert centimeter) or more is passed. In this way, even if tap water is used as the raw material water, calcium ions and magnesium ions move efficiently into the washing water 11 and exhibit an effect of preventing deterioration in performance even when used for a long time. It is.

Next, the invention of claim 4 provides the ion exchange membrane 1
An electrode 2 made of a catalytic metal is in contact with one surface side to form an anode side, and an electrode 3 made of a metal is made in contact with the other surface to form a cathode side. And an ozone generator that generates ozone on the anode side by applying a DC voltage to the anode side and the cathode side, wherein the electrode 2 made of the catalyst metal on one side is made of a platinum wire net, and the other side is The electrode 3 made of a metal is composed of a metal net made of a corrosion-resistant metal, and the other side, which is the cathode side of the ion exchange membrane 1, is
Conductivity of 3 in aqueous solution of sodium chloride or potassium chloride
The cleaning water 11 is brought into contact with the cleaning water 11 of not less than 00 μs · cm (microsievert centimeter) or
Is made to flow along the other side.

Therefore, the present invention uses the washing water 11 consisting of an aqueous solution of sodium chloride or potassium chloride having an electric conductivity of 300 μs · cm (microsievert centimeters) or more. 11 can be easily prepared.

Next, according to a fifth aspect of the present invention, an electrode 2 made of a catalytic metal is brought into contact with one side of the ion exchange membrane 1 to form an anode side, and an electrode 3 made of a metal is brought into contact with the other side. In the ozonizer which forms the cathode side and allows the raw water 10 to flow along the one side of the anode side, and applies a DC voltage to the anode side and the cathode side to generate ozone on the anode side, The electrode 2 made of a catalytic metal is made of a metal mesh of platinum, and the electrode 3 made of a metal on the other surface is made of a metal mesh of a corrosion-resistant metal.
The hot water that has passed through the water heater 50 is allowed to flow, and the other side, which is the cathode side, of the ion exchange membrane 1 is made of an aqueous solution of sodium chloride or potassium chloride having a conductivity of 300 μs ·
A technical means is provided in which the cleaning water 11 is brought into contact with the cleaning water 11 of cm micro sievert centimeters or more, or the cleaning water 11 flows along the other surface side.

Therefore, the present invention uses a water heater,
It exhibits the effect of obtaining ozone water of warm water.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the drawings. In the figure, reference numeral 1 denotes an ion exchange membrane. This ion exchange membrane 1 is specifically described above (manufactured by DuPont, USA,
A trade name such as Nafion 450) may be used. The ion exchange membrane 1 is used in a flat state in the example of FIG. 1, and is mounted in the container 20 so as to partition the container 20 into two parts.

An electrode 2 made of a catalytic metal is in contact with one surface of the ion exchange membrane 1 to form an anode, and an electrode 3 made of a metal is made in contact with the other surface to form a cathode.
That is, the electrode 2 is brought into contact with one surface side (right side in the figure) of the ion exchange membrane 1 located at the center of the container 20 in FIG.
The right side of 0 is an anode side (anode chamber 20a), the electrode 3 is in contact with the other side of the ion exchange membrane 1 (left side in the figure), and the left side of the container 20 is a cathode side (cathode chamber 20a). There is something.
Needless to say, the electrodes 2 and 3 are connected to the DC power supply 30 so as to be divided into the anode side and the cathode side.

In general, the electrode 3 on the cathode side may be made of a corrosion-resistant material such as stainless steel. However, as in the case of the anode side, the use of platinum, gold, nickel, titanium or the like is considered to increase ozone generation efficiency. It has been confirmed in experimental results.

Then, the anode side of the container 20 (the anode chamber 2)
0a) is provided with an inflow port 21a and an outflow port 22a,
The raw water 10 is supplied from the inflow port 21a, flows through the vessel 20 along one surface of the anode side, and flows out of the outflow port 22a.
It is designed to leak more. Conventionally, soft water was used as the raw water, but the present invention is not particularly limited to the raw water, and general commercial tap water or the like was used as it is.

Conventionally, as described above, the raw water 10 is caused to flow along the anode side (anode chamber 20a), and a DC voltage is applied to the anode side and the cathode side to generate ozone on the anode side. And 30 is a DC power supply.
It is a matter of course that the anode side is connected to the electrode 2 made of the catalyst metal, and the cathode side is connected to the electrode 3 made of the metal.

In the present invention, the other side of the ion exchange membrane 1, which is the cathode side, is brought into contact with the electrolyte washing water 11. In the illustrated example, an inlet 21b and an outlet 22b are also provided on the cathode side (cathode chamber 20b) of the container 20, and the washing water 11 stored in the washing water tank 12 is supplied to the inlet 21b by the pump 13. The cleaning water 11 which has been sent and flowed out from the outlet 22b returns to the water inlet 12 of the water purification tank. Since the washing water 11 needs a capacity necessary for the calcium ions and the magnesium ions to be continuously dissolved therein, the circulation type is adopted in the illustrated example. However, the washing water 11 is provided on the cathode side (cathode chamber 20b) of the container 20. The capacity may be increased and the washing water 11 may simply be filled therein.

Therefore, in this embodiment, the raw water 10 is electrolyzed on the anode side, and ozone water in which ozone is melted (actually containing oxygen) is obtained as in the prior art. The contained calcium ions and magnesium ions pass through the ion-exchange membrane 1 and dissolve in the washing water, so that an ozonizer can be provided in which inorganic substances do not precipitate or deposit on the periphery of the electrode even after a long continuous operation.

In the present invention, the concentration of dissolved calcium ions and magnesium ions in the washing water is gradually increased with the operation, and the calcium ions and the magnesium ions will not pass smoothly through the ion exchange membrane 1 soon. However, if the capacity of the washing water 11 is large, the operation can be performed stably for a considerable period of time, and there is no problem in practice.
It is good to attach the device which reproduces.

Next, the embodiment shown in FIGS. 2 and 3 is used by winding the ion exchange membrane 1 in a cylindrical shape. A spacer 23 is spirally wound around a core material 23, and a catalyst metal is wound outside the core material 23. The electrode 2, the ion exchange membrane 1, and the electrode 3 made of metal are sequentially wound to form an ozonizer segment 25. The ozonizer segment 25 is loosely inserted and stored in the cylindrical container 20. A spiral space formed between the spacers 24 is defined as a flow path 20c of the raw water 10 (corresponding to the anode chamber 20a on the anode side), and is provided at one end side (the lower end side in FIG. 2) of the container 20. Inlet 21 provided
a to one end of the flow path 20c, and an outlet 22a provided on the other end side (the upper end side in FIG. 2) of the container 20 is connected to the flow path 20c.
It communicates with the other end of c. The raw water flowing in from the inflow port 21a flows out of the outflow port 22a through a spiral flow path 20c closed on one side by the electrode 2 and the ion exchange membrane 1.

Then, the above-mentioned ozonizer segment 25
The space between the outer peripheral surface of the container and the inner peripheral surface of the container 20 is on the cathode side (the cathode chamber 20b), and an inlet 21b and an outlet 22b communicating with the cathode chamber 20b are provided at both ends of the container 20. The inflow port 21 b and the outflow port 22 b are used to supply the washing water 11 stored in the washing water tank inlet 12 to the pump 13.
The washing water 11 supplied to the inflow port 21b and flowing out of the outflow port 22b returns to the inside of the water purification tank inflow port 12. As shown most clearly in FIG. 3, when the inflow port 21b and the outflow port 22b are provided in a tangential direction so that the washing water flows in a spiral, the frequency of contact between the washing water 11 and the electrode 3 is reduced. Improve and be effective.

In the case of the embodiment shown in FIGS. 2 and 3,
It goes without saying that the anode side of the DC power supply 30 is connected to the electrode 2 and the cathode side is connected to the electrode 3. Also, in this embodiment, the circulation type is adopted, but the capacity on the cathode side (cathode chamber 20b) of the container 20 may be increased to simply fill the washing water 11 therein.

Next, according to a second aspect of the present invention, an electrode 2 made of a catalytic metal is brought into contact with one side of the ion exchange membrane 1 to form an anode side, and an electrode 3 made of a metal is brought into contact with the other side. An ozonizer that forms a cathode side and allows raw water 10 to flow along one side of an anode side, and also applies a DC voltage to the anode side and the cathode side to generate ozone on the anode side. The cleaning water 11 of the electrolyte is caused to flow along the other surface side, which is the cathode side of the first embodiment, and the cleaning water of the invention according to the first embodiment is not a residence system but a flowing system. This is limited to the excess method (including the circulation method as shown).

That is, by circulating the washing water 11,
Fresh washing water 11 is always in contact with the cathode side surface of the ion exchange membrane 1 and flows away, so that the dissolved calcium ions and magnesium ions sequentially move away from the place and release from the next ion exchange membrane 1. It did not hinder.

Next, the invention of claim 3 provides the ion exchange membrane 1
An electrode 2 made of a catalytic metal is in contact with one surface side to form an anode side, and an electrode 3 made of a metal is made in contact with the other surface to form a cathode side. And an ozone generator that generates ozone on the anode side by applying a DC voltage to the anode side and the cathode side, wherein the electrode 2 made of the catalyst metal on one side is made of a platinum wire net, and the other side is The electrode 3 is made of a corrosion-resistant metal wire mesh, and along the other side of the ion-exchange membrane 1 that is the cathode side, an electrolysis having a conductivity of 300 μs · cm (microsievert centimeter) or more. This is characterized in that the washing water 11 composed of a liquid aqueous solution is allowed to flow, and first, both electrodes 2 and 3 are limited to a wire mesh shape.

As mentioned earlier, this type of electrolysis occurs most strongly at the boundary between the electrode contact surface and the non-contact surface of the ion exchange membrane 1. Therefore, in order to obtain the preferred electrolysis occurrence site in a wide area, the wire mesh electrodes 2 and 3 are required.
(Especially, the electrode 3 on the anode side).

Next, according to the present invention, the cleaning water 11 flowing along the other side of the ion exchange membrane 1 which is the cathode side has a conductivity of 300 μs · cm (microsievert centimeter) or more. It is limited to use an aqueous electrolyte solution. That is, if the conductivity of the washing water 11 is too low, calcium ions and magnesium ions are hardly released from the ion exchange membrane 1 and the conductivity is 300 μs · cm.
(Microsievert centimeters) or more was effective.

Next, the invention of claim 4 relates to the ion exchange membrane 1
An electrode 2 made of a catalytic metal is in contact with one surface side to form an anode side, and an electrode 3 made of a metal is made in contact with the other surface to form a cathode side. And an ozone generator that generates ozone on the anode side by applying a DC voltage to the anode side and the cathode side, wherein the electrode 2 made of the catalyst metal on one side is made of a platinum wire net, and the other side is The electrode 3 made of a metal is composed of a metal net made of a corrosion-resistant metal, and the other side, which is the cathode side of the ion exchange membrane 1, is
Conductivity of 3 in aqueous solution of sodium chloride or potassium chloride
The cleaning water 11 is brought into contact with the cleaning water 11 of not less than 00 μs · cm (microsievert centimeter) or
Flows along the other surface side. In the present invention, the cleaning water 11 is made of an aqueous solution of sodium chloride or potassium chloride and has a conductivity of 300 μs · cm.
(Microsievert centimeters) or more. That is, the aqueous solution of sodium chloride or potassium chloride is inexpensive and easily available.

Next, a specific embodiment will be described. A 15 cm square of Nafion 450 (trade name) was used for the ion exchange membrane 1, and a 55 mesh metal mesh of platinum (Pt) and a cathode Similarly, a 55 mesh wire mesh of platinum (Pt) was used for the electrode 3. Then, tap water (conductivity: 200 μs · cm (microsievert centimeter)) was directly used as the raw water 10 without using a water softener. The washing water 11 is an aqueous solution of sodium chloride (conductivity 13
About 4 liters of 00 μs · cm (microsievert centimeter) was prepared in the washing water tank 12.

Then, tap water as the raw water 10 was supplied at a rate of 5 liters per minute, the washing water 11 was circulated at a rate of 1 liter per minute, and a direct current of 15 amps was applied to the electrodes 2 and 3; 0.0 volts. Approximately 4.
Ozone water having a concentration of 5 PPM was obtained. Ozone concentration is plus or minus 0.2P during continuous operation for about 2 hours
Although it was extremely stable with PM and the voltage slightly increased to 12.5 volts, it was confirmed that continuous stable operation was possible.

For comparison with the present invention, the inlet 21b at the lower end side of the cathode chamber 20b is closed in the above specific embodiment (the outlet 22b is opened without being connected to the washing water tank 12 because hydrogen is generated in the outlet 22b). When the cleaning on the cathode side was stopped, the voltage increased by about 50% in about 20 minutes under the same conditions, and the operation was virtually impossible. White deposits were deposited both on the cathode side and as a result of the analysis, the deposits were calcium and trace amounts of magnesium contained in tap water. Decomposition was also confirmed for the operation performed in the specific example of the present invention, but the surfaces of both the electrodes 2, 3 and the ion exchange membrane 1 were completely clean, and the surface of the ion exchange membrane on the cathode side was completely clean. Although some platinum black adhered to the surface, no adhesion of calcium or magnesium, which inhibits the flow of electricity, was observed at all.

During the data collection in the above specific example, since tap water was directly used, it was noticed at the beginning of the experiment that the water temperature was very high. When the rooftop exposed aqueous phase was used, tap water often reached 30 ° C. or higher, and the change in temperature did not significantly affect the ozone generation ability. Ozone water at about 35 ° C has high detergency and sterilization power, and is widely used for preventing deterioration of foods by microorganisms, cleaning pipes and valves, disinfecting hands, and cleaning fine dirt in semiconductor manufacturing processes. It can be assumed.

Therefore, according to the invention of claim 5, an electrode 2 made of a catalytic metal is brought into contact with one side of the ion exchange membrane 1 to form an anode side, and an electrode 3 made of a metal is brought into contact with the other side of the membrane. In the ozonizer which causes the raw water 10 to flow along the one surface of the anode and applies a DC voltage to the anode and the cathode to generate ozone on the anode, the catalyst on the one surface The electrode 2 made of a metal is made of a metal mesh of platinum, and the electrode 3 made of a metal on the other surface is made of a metal mesh of a corrosion-resistant metal.
The hot water that has passed through the water heater 50 is allowed to flow, and the other side, which is the cathode side, of the ion exchange membrane 1 is made of an aqueous solution of sodium chloride or potassium chloride having a conductivity of 300 μs ·
cm (microsievert centimeter) or more, or the cleaning water 11 is allowed to flow along the other surface side.

That is, in the present invention, hot water obtained by heating tap water is used as the raw material water.
When hot water at 35 ° C. was supplied as raw water, the outlet 2
From 2a, ozone water at a temperature of about 35 ° C. at 4.7 PPM flowed out. This result is contrary to the common belief that the lower the temperature of the raw material water is, the higher the ozone generation efficiency is. The reason for this is still being elucidated, but the interface on the cathode side surface of the ion-exchange membrane 1 is forced by an electrolyte solution. As a result of the sweep, hydrogen and a small amount of passing elements such as calcium ions and magnesium ions move into the liquid continuously from the membrane surface, resulting in a movement called hopping in a series of molecular chain-linked fluorine-based ion exchange membranes. It is assumed that the phenomenon is activated and the electrolysis at the anode is made more efficient. For comparison, when the operation was performed without using the washing water on the cathode side under the dynamic condition, the ozone concentration was repeatedly changed from 0.1 to 0.8 PPM greatly every short time, and the average ozone concentration was 0.5 PPM. Met.

[0042]

The present invention does not use a water softener, but only uses tap water as a raw material and allows it to pass through a small-sized device.
Since the ozone water with extremely high sterilizing power of PPM can be obtained,
It is possible to provide an ozonizer having a remarkably high price for preventing so-called microbial disaster, which can be widely used for prevention of deterioration of food by microorganisms and prevention of hospital infection in hospitals.

Also, if ozone water of about 4 to 5 PPM at about 35 ° C. can be produced with tap water, a simple water heater, and a simple and small ozonizer, there is no other example, and it is superior to cold ozone water. The present invention can provide an ozonizer capable of obtaining a cleaning power and a sterilizing power and remarkably expanding an application range.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the ozonizer of the present invention.

FIG. 2 is a longitudinal sectional view of another embodiment.

FIG. 3 is a cross-sectional view of the embodiment of FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ion exchange membrane 2 Electrode 3 Electrode 10 Raw material water 11 Washing water 50 Water heater

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C02F 1/50 540 C02F 1/50 550D 4K021 550 1/78 1/78 C25B 11/08 Z C25B 11/08 15/00 302A 15/00 302 1/00 F (72) Inventor Hirokazu Shiota 5-5-1 Minami-Aoyama, Minato-ku, Tokyo F-term in VMC Co., Ltd. 4C058 AA12 BB07 JJ07 JJ14 4D050 AB06 BB02 BD04 4D061 DA10 DB09 EA01 EB02 EB04 EB13 ED12 FA20 4G035 AA01 AE05 4K011 AA10 AA31 DA01 4K021 AA01 AA09 AB15 BA02 BC01 BC09 DB01 DB05 DB07 DB12 DB18 DB31 DB53 DC07

Claims (5)

[Claims] An electrode (2) made of a catalytic metal is in contact with one side of an ion exchange membrane (1) to form an anode side, and an electrode (3) made of a metal is made in contact with the other side of the ion exchange membrane (1) and a cathode side. In an ozonizer that allows the raw water (10) to flow along one surface of the anode side and that applies a DC voltage to the anode side and the cathode side to generate ozone on the anode side, An ozonizer characterized in that a certain other surface is brought into contact with electrolyte washing water (11). 2. An electrode (2) made of a catalytic metal is in contact with one side of an ion exchange membrane (1) to form an anode side, and an electrode (3) made of a metal is made in contact with the other side of the ion exchange membrane (1) and a cathode side. An ozonizer for flowing raw water (10) along one side of the anode side and applying a DC voltage to the anode side and the cathode side to generate ozone on the anode side; The ozonizer according to (1), wherein the washing water (11) for the electrolyte is caused to flow along the other surface side which is the cathode side. 3. An electrode (2) made of a catalytic metal is brought into contact with one side of the ion exchange membrane (1) to form an anode side, and an electrode (3) made of a metal is brought into contact with the other side to form a cathode side. In an ozonizer for flowing raw water (10) along one side of the anode side and applying a DC voltage to the anode side and the cathode side to generate ozone on the anode side, The electrode (2) made of a catalytic metal is made of a metal mesh of platinum, and the electrode (3) made of a metal on the other surface is made of a metal mesh of a corrosion-resistant metal. The other surface on the cathode side of the ion exchange membrane (1) Along the side, the conductivity is 300 μs · cm (microsievert
An ozonizer, characterized in that a washing water (11) comprising an aqueous solution of an electrolyte solution having a diameter of not less than 1 cm is passed. 4. An electrode (2) made of a catalytic metal is brought into contact with one side of an ion exchange membrane (1) to form an anode side, and an electrode (3) made of a metal is brought into contact with the other side to form a cathode. In an ozonizer for flowing raw water (10) along one side of the anode side and applying a DC voltage to the anode side and the cathode side to generate ozone on the anode side, The electrode (2) made of a catalytic metal is made of a metal mesh of platinum, and the electrode (3) made of a metal on the other surface is made of a metal mesh of a corrosion-resistant metal. The other surface on the cathode side of the ion exchange membrane (1) On the side, an aqueous solution of sodium chloride or potassium chloride having a conductivity of 300
μs · cm (micro sievert centimeters) or more.
An ozonizer characterized in that 1) flows along the other side. 5. An electrode (2) made of a catalytic metal is in contact with one side of the ion exchange membrane (1) to form an anode side, and an electrode (3) made of a metal is made in contact with the other side of the ion exchange membrane (1) and a cathode side. In an ozonizer for flowing raw water (10) along one side of the anode side and applying a DC voltage to the anode side and the cathode side to generate ozone on the anode side, The electrode (2) made of a catalytic metal is made of a metal mesh of platinum, and the electrode (3) made of a metal on the other surface is made of a metal mesh of a corrosion-resistant metal. One surface of the ion exchange membrane (1) that is the anode side Then, the hot water passed through the water heater (50) is allowed to flow, and the other side, which is the cathode side of the ion exchange membrane (1), is made of an aqueous solution of sodium chloride or potassium chloride and has an electric conductivity of 300.
μs · cm (micro sievert centimeters) or more.
An ozonizer characterized in that 1) flows along the other side.