JP6847477B1 - Electrolyzed water production equipment and method for producing electrolyzed water using this - Google Patents

Abstract

PROBLEM TO BE SOLVED: To electrolyze electrolyzed raw water without adding an electrolyte, to produce electrolyzed water in a neutral region suitable for drinking, and to transfer oxygen gas and hydrogen gas generated by electrolysis into the electrolyzed water. Provided is an electrolyzed water producing apparatus capable of being dissolved in a high concentration, and a method for producing electrolyzed water using the electrolyzed water producing apparatus. SOLUTION: An electrolyzed raw water is electrolyzed using a solid polymer electrolyte membrane, and a dipole plate for supplying a current to the solid polymer electrolyte membrane and a solid polymer electrolyte membrane are formed by a feeding body having a gas diffusing ability. By electrically connecting and further flowing electrolytic raw water sequentially to the anode side and the cathode side of the electrolytic tank to electrolyze, the electrolyzed water in the neutral region suitable for drinking can be obtained without adding an electrolyte. Further, oxygen gas and hydrogen gas can be dissolved in the electrolyzed water at a high concentration. [Selection diagram] Fig. 2

Description

The present invention relates to an electrolyzed water producing apparatus that electrolyzes water using a solid polymer electrolyte membrane as an electrolyte, and a method for producing electrolyzed water using the electrolyzed water producing apparatus. Specifically, while supplying electrolyzed raw water (water before electrolysis) to the solid polymer electrolyte membrane, water is electrolyzed using the solid polymer electrolyte membrane as an electrolyte, and the generated oxygen gas and hydrogen gas are dissolved in the electrolyzed water. The present invention relates to an electrolyzed water producing apparatus and a method for producing electrolyzed water using the electrolyzed water producing apparatus.

Generally, a diaphragm type electrolytic cell having a diaphragm between a pair of electrodes is used in the electrolyzed water production apparatus. As the diaphragm of the diaphragm type electrolytic cell, an ion exchange membrane which is a charged membrane, a neutral membrane which is an uncharged membrane, and the like are used. Acidic electrolyzed water is generated on the anode side (anode chamber) of the diaphragm type electrolytic cell, and alkaline electrolyzed water is generated on the cathode side (cathode chamber). When an apparatus using a diaphragm type electrolytic cell is used, the anode side electrolyzed water (anode water) and the cathode side electrolyzed water (cathode water) are usually collected separately.

When chloride such as sodium chloride is added as an electrolyte to the raw water for electrolysis and electrolysis is performed, the electrode reaction products such as hydrochloric acid, hypochlorous acid, dissolved oxygen, and active oxygen such as hydroxyl radical are generated on the anode side. Generate. Since hypochlorous acid exhibits a strong chlorination reaction and an oxidation reaction, anode water is used for sterilizing fungi and the like.

On the other hand, the cathode water generated on the cathode side is widely known as drinking alkaline ionized water. Cathode water production equipment is commercially available as medical equipment and the like, and has become widespread with the spread of mineral water.

The properties of these electrolyzed waters can be expressed by several parameters. As parameters, pH, oxidation-reduction potential, dissolved oxygen concentration, dissolved hydrogen concentration, hypochlorous acid concentration and the like are adopted. The values of these parameters are determined by the type and concentration of the solute contained in the electrolyzed raw water, the magnitude of the electrolyzed energy applied to the electrolyzed water, and the like.

When drinking electrolyzed water, the most important parameters are the values of hypochlorous acid concentration and pH. In the case of cathode water, hypochlorous acid is not contained, so only the pH value matters. Since strongly alkaline or strongly acidic electrolyzed water is dangerous to the living body, electrolyzed water in the neutral to weakly alkaline (pH 9.5 or less) region is drunk. When the electrolysis energy is large, the anolyte water tends to the strongly acidic side and the cathode water tends to the strong alkaline side. Therefore, normally, a very large amount of electricity cannot be used during electrolysis.

In order to keep the pH of the electrolyzed water obtained by using a high amount of electricity during electrolysis within a predetermined range, various methods have been conventionally used. For example, Patent Document 1 discloses an apparatus for producing electrolyzed water, which is electrolyzed in an anode chamber and then electrolyzed again in a cathode chamber. Patent Document 2 discloses a method for producing electrolyzed water using a membrane-electrode assembly in which a diaphragm and an electrode are integrated.

Japanese Unexamined Patent Publication No. 2014-124601 Japanese Unexamined Patent Publication No. 2015-221397

An object of the present invention is to produce electrolyzed water in a neutral region that can be electrolyzed using purified water having low electrical conductivity such as back-penetration membrane-treated water or ion-exchange resin-treated water as electrolyzed raw water and is suitable for drinking. Provided are an electrolyzed water producing apparatus capable of coexisting and dissolving oxygen gas and hydrogen gas generated by electrolysis in electrolyzed water at a high concentration, and a method for producing electrolyzed water using the electrolyzed water producing apparatus. To do.

As a result of diligent studies to solve the above problems, the present inventor electrolyzes the electrolytic raw water using a solid polymer electrolyte membrane, and supplies a current to the solid polymer electrolyte membrane. By electrically connecting the polymer electrolyte membrane with a feeding body having gas diffusing ability, and further circulating electrolytic raw water sequentially to the anode side and the cathode side of the electrolytic tank for electrolysis, the electric conductivity is increased. Even if the raw water is low, it is possible to obtain electrolyzed water in the neutral range suitable for drinking without adding an electrolyte, and further, it is possible to coexist and dissolve oxygen gas and hydrogen gas in the electrolyzed water at high concentrations. We have found what we can do and have completed the present invention.

The present invention that solves the above problems is described below.

[1] An electrolyzed water production apparatus comprising an electrolytic raw water supply means, an electrolytic cell connected to the electrolytic raw water supply means, and an activated carbon filter connected to the outlet side of the electrolytic cell.
The electrolytic cell includes a pair of multi-pole plates arranged in parallel with each other, and also
A film-electrode junction composed of a solid polymer electrolyte membrane and a liquid-permeable electrode catalyst formed in close contact with each surface of the solid polymer electrolyte membrane is parallel to the dipole plate between the dipole plates. The inside of the electrolytic cell is partitioned to form a first electrolytic cell and a second electrolytic cell, and the outlet side of the first electrolytic cell and the inlet side of the second electrolytic cell are the electrolytic cells. Consisting of being liquidtightly connected to the outside of
Each of the first electrolytic chamber and the second electrolytic chamber is provided with a feeding body for electrically connecting the double electrode plate and each electrode catalyst of the membrane-electrode assembly. A featured electrolyzed water production device.

The electrolyzed water production apparatus according to [1] is the electrolyzed water production apparatus described in FIG. 1 described later, and has the electrolytic cell described in FIG. 2 described later. This electrolyzed water producing apparatus supplies water to the solid polymer electrolyte membrane by sequentially supplying electrolytic raw water to the first electrolytic chamber (for example, an anode chamber) and the second electrolytic chamber (for example, a cathode chamber), and at the same time, the solid height. Water is electrolyzed using the molecular electrolyte membrane as an electrolyte, and the gas generated by the electrolysis is supplied to the first electrolysis chamber (oxygen gas) and the second electrolysis chamber (hydrogen gas), respectively. Since a feeding body having a gas diffusing ability is disposed in each of the first electrolysis chamber and the second electrolysis chamber, the supplied gas is dispersed in the electrolyzed water as fine bubbles so as to be quickly dissolved. It is configured in. The first electrolytic chamber may be a cathode chamber and the second electrolytic chamber may be an anode chamber, or the polarities thereof may be changed.

[2] The electrolyzed water production apparatus according to [1], wherein the feeding body is a metal fiber or a metal mesh.

In the electrolyzed water production apparatus of the above [2], since the feeding body is in the form of a fiber or a mesh having a three-dimensional structure, the gas diffusing ability is extremely high, and fine gas bubbles are formed in the fiber or the three-dimensional structure metal mesh. Since the gas is retained and retained in the electrolyzed water, the gas can be dissolved in the electrolyzed water at a high concentration.

[3] The electrolyzed water production apparatus according to [1], wherein the material of the electrode catalyst is platinum or an iridium alloy, respectively.

Since the electrolyzed water production apparatus of the above [3] has high chemical stability of the electrode catalyst, a strongly acidic solid polymer electrolyte membrane can be used.

[4] The electrolyzed water production apparatus according to [1], wherein each of the electrode catalysts has a thickness of 1 to 100 μm.

In the electrolyzed water production apparatus of [4] above, the electrode catalyst is a thin-film electrode catalyst layer formed on the surface of the solid polymer electrolyte membrane.

[5] A method for producing electrolyzed water using the electrolyzed water producing apparatus according to [1].
The raw electrolysis water is sequentially sent to the first electrolysis chamber and the second electrolysis chamber of the electrolytic cell, and at the same time.
Water is electrolyzed in the membrane-electrode assembly by energizing the membrane-electrode assembly from the multi-electrode plate arranged in the electrolytic cell through the feeder.
Oxygen gas and hydrogen gas generated by electrolysis are sequentially dissolved in water circulating inside the first electrolysis chamber and the second electrolysis chamber, respectively, to obtain electrolyzed water.
Next, a method for producing electrolyzed water, which comprises passing the electrolyzed water discharged from the second electrolyzing chamber through an activated carbon filter.

In the method for producing electrolyzed water in [5] above, oxygen gas generated by sequentially circulating electrolyzed raw water to the first electrolyzing chamber and the second electrolyzing chamber of the electrolytic cell and electrolyzing using the solid polymer electrolyte membrane. Both and hydrogen gas are dispersed and dissolved in the electrolyzed raw water as fine bubbles. Therefore, large bubbles are not generated in the apparatus, and the generated oxygen gas and hydrogen gas are dissolved in the electrolyzed water at a high concentration.

[6] The method for producing electrolyzed water according to [5], wherein the electrolyzed raw water has an electric conductivity of 0.5 to 100 (mS / m).

In the method for producing electrolyzed water in [6] above, not only tap water but also water from which electrolytes have been removed, such as reverse osmosis membrane-treated water and ion exchange resin-treated water, can be used as the electrolyzed raw water.

[7] The method for producing electrolyzed water according to [5], wherein the amount of electrolyzed electricity per 100 (mL) of raw electrolyzed water is 60 to 180 coulomb.

In the method for producing electrolyzed water according to the above [7], since the amount of electricity used for electrolysis is high, highly electrolyzed electrolyzed water can be obtained.

In the electrolyzed water production apparatus of the present invention, the water electrolyzed in the first electrolysis chamber (anode chamber) is circulated to the second electrolysis chamber and further electrolyzed to obtain electrolyzed water. Therefore, the pH of the obtained electrolyzed water does not substantially change from the pH of the electrolyzed raw water. That is, when tap water is used as the raw electrolyzed water, substantially neutral electrolyzed water suitable for drinking can be obtained. Further, unlike the conventional electrolyzed water production apparatus which electrolyzes the anode chamber side and the cathode chamber side to obtain the anode electrolyzed water and the cathode electrolyzed water, respectively, it is not necessary to dispose of the water obtained in one of the electrolyzed chambers. .. Further, since the water electrolyzed in the first electrolysis chamber (anode chamber) is circulated to the second electrolysis chamber and further electrolyzed, the applied electric energy becomes high, and the properties of the obtained electrolyzed water can be significantly changed. ..
Since the electrolyzed water production apparatus of the present invention performs electrolysis using a solid polymer electrolyte membrane as an electrolyte, it can be efficiently electrolyzed without adding an electrolyte to the electrolyzed raw water. Further, since electrolysis is performed using a membrane-electrode assembly, the device can be miniaturized.
In the electrolyzed water producing apparatus of the present invention, oxygen gas and hydrogen gas generated by electrolysis are finely diffused into the electrolyzed water by a feeding body having a gas diffusing ability arranged in the electrolysis chamber. Therefore, a large amount of oxygen gas and hydrogen gas can be dissolved in the electrolyzed water.

It is a schematic block diagram which shows an example of the electrolyzed water production apparatus of this invention. It is a schematic block diagram which shows an example of the electrolytic cell used for the electrolyzed water production apparatus of this invention.

(1) Configuration of the apparatus First, the configuration of the electrolyzed water production apparatus of the present invention (hereinafter, also referred to as “the apparatus”) will be described. FIG. 1 is a schematic configuration diagram showing a configuration example of the present device. FIG. 2 is a schematic configuration diagram showing an example of the electrolytic cell 50 used in this apparatus.

In FIG. 1, 100 is an electrolyzed water production apparatus. An electrolytic raw water storage container 13 is arranged in the housing 11. One end of the pipe 17 that interposeds the pump 15 is connected to the bottom of the electrolytic raw water storage container 13, and the other end of the pipe 17 is connected to the inlet of the electrolytic cell 50. One end of the pipe 21 is connected to the outlet side of the electrolytic cell 50, and the other end of the pipe 17 is connected to the inlet side of the activated carbon filter 23. An outlet for electrolyzed water is formed on the outlet side of the activated carbon filter 23. Reference numeral 25 denotes an electrolyzed water receiving container, and 29 is a lid covering the upper part of the electrolyzed raw water storage container 13. The pump 15 and the electrolytic cell 50 are controlled by the control unit 27.

In FIG. 2, 50 is an electrolytic cell. The electrolytic cell 50 is formed in a hollow box shape, and a pair of double electrode plates 31 and 33 are arranged in parallel with each other on the facing inner walls thereof. The multi-pole plates 31 and 33 are connected to a power source via a control unit (not shown). The inside of the electrolytic cell 50 is partitioned by a membrane-electrode assembly (hereinafter sometimes referred to as MEA) 40, and a first electrolytic cell (anode chamber) 60 is formed on the side of the double electrode plate 31, and the double electrode plate 33 is formed. A second electrolytic cell (cathode chamber) 70 is formed on the side. In the MEA 40, the electrode catalyst 41 is formed in close contact with one surface of the solid polymer electrolyte membrane 45, and the electrode catalyst 43 is formed in close contact with the surface on the opposite side. The double electrode plate 31 formed on the side of the first electrolytic chamber 60 and the electrode catalyst 41 are electrically connected by a feeding body 35 arranged in the first electrolytic chamber 60. The double electrode plate 33 formed on the side of the second electrolytic chamber 70 and the electrode catalyst 43 are electrically connected by a feeding body 37 arranged in the second electrolytic chamber 70. The outlet side of the first electrolytic cell 60 and the inlet side of the second electrolytic cell 70 are liquidtightly connected by a distribution pipe 19 outside the electrolytic cell 50.

The housing 11, the electrolyzed raw water storage container 13, the pipes 17, 21, the flow pipe 19, the electrolyzed water receiving container 25, and the lid 29 are each made of known materials such as stainless steel, aluminum, and resin coated with resin in the pipe. can do. As for the pump 15, a known configuration may be adopted.

The double electrode plates 31 and 33 constituting the electrolytic cell 50 can be made of known electrode materials such as copper, silver, platinum, platinum alloy, and titanium.

As the solid polymer electrolyte membrane 45 constituting the MEA 40, a cation exchange resin membrane or an anion exchange resin membrane is used. Preferably, a fluororesin-based cation exchange resin film having a sulfonic acid group is used. The thickness of the solid polymer electrolyte membrane 45 is 10 to 1000 (μm), preferably 50 to 500 (μm), and more preferably 100 to 300 (μm). As such a polymer film, a commercially available product can be used.

As the electrode catalysts 41 and 43, thin films of platinum or iridium are used. The thickness of the electrode catalyst is 1 to 100 (μm), preferably 5 to 50 (μm), and more preferably 10 to 30 (μm).
The electrode catalysts 41 and 43 can be formed in close contact with the surface of the solid polymer electrolyte membrane 45 by subjecting the surface of the solid polymer electrolyte membrane 45 to plating, sputtering, or the like. The solid polymer electrolyte membrane 45 is not completely covered with the electrode catalysts 41 and 43, and at least fine pores that allow the permeation of oxygen gas and hydrogen gas are formed.

The feeding bodies 35 and 37 arranged in the first electrolytic chamber 60 and the second electrolytic chamber 70 allow the electrolytic raw water (electrolyzed water) to flow in the first electrolytic chamber 60 and the second electrolytic chamber 70, and It is preferable to have a metal mesh having a liquid-permeable porous structure or a three-dimensional structure so that oxygen gas and hydrogen gas generated in the MEA 40 can be efficiently diffused. By having such a structure, it is possible to suppress the movement of bubbles by adsorbing and holding oxygen gas and hydrogen gas generated by electrolysis, and to suppress the coalescence of fine bubbles. That is, it is possible to prevent the oxygen gas and hydrogen gas generated by electrolysis from being completely dissolved in the electrolyzed water and diffusing out of the electrolyzed water.

Specifically, it is preferably a metal mesh or a metal fiber. The wire diameter (fiber diameter) of the metal mesh or metal fiber is preferably 0.1 to 1000 (μm), more preferably 10 to 300 (μm).

As the metal material, platinum, platinum alloy, titanium, and stainless steel are preferable.

It is preferable that the feeding bodies 35 and 37 are substantially uniformly arranged in the first electrolytic chamber 60 and the second electrolytic chamber 70. By arranging the feeding bodies 35 and 37 substantially uniformly in the first electrolytic chamber 60 and the second electrolytic chamber 70, the feeding is concentrated to one point of the electrode catalyst when the feeding power is supplied from the double electrode plate to the electrode catalyst. This can be suppressed, and the contact resistance between the feeding body and the electrode catalyst can be reduced to improve the life of the MEA. Here, substantially uniform means that the abundance of the feeder does not differ by 10% by mass or more when evenly divided into 10 in the direction orthogonal to the liquid flow direction inside the first electrolytic chamber and the second electrolytic chamber. To do.

The distance between the double electrode plates 31 and 33 and the electrode catalysts 41 and 43 is preferably 1.0 to 3.0 (mm), and particularly preferably 1.0 to 2.0 (mm).

As the activated carbon filter 23, a known filter using activated carbon or the like as an adsorbent can be used.

(2) Operation of this apparatus Next, a method of producing electrolyzed water using the electrolyzed water producing apparatus 100 shown in FIG. 1 will be described. The arrows in FIG. 2 indicate the direction of water flow in the device.

An electrolyzed raw water storage container 13 is arranged in the housing 11 of the electrolyzed water producing apparatus 100. Here, the lid 29 is removed and electrolyzed raw water (water before being electrolyzed) is supplied. The electrolytic raw water stored in the electrolytic raw water storage container 13 is sent to the first electrolytic cell 60 on the anode side of the electrolytic cell 50 through the pipe 17 by the drive of the pump 15 controlled by the control unit 27. The electrolytic raw water sent to the first electrolytic chamber 60 supplies a part of water to the solid polymer electrolyte membrane 45 of the MEA 40. Electrolysis of the electrolyzed raw water is performed in the MEA40. Specifically, the current supplied to the multi-pole plate 31 by the control unit 27 is supplied to the MEA 40 via the feeding body 35. Water is electrolyzed in the MEA40.

電解の際、ＭＥＡ４０の陰極側では以下の電解が行われる。
２Ｈ_２Ｏ ＋ ２ｅ⁻ → Ｈ_２ ＋ ２ＯＨ⁻ ・・・式（３） At the time of electrolysis, the following electrolysis is performed on the anode side of MEA40.
_{2H 2 O → O 2 + 4H} + + 4e - ··· Equation (1)
When the chloride electrolyte is dissolved, hypochlorous acid is produced at the anode as follows.

At the time of electrolysis, the following electrolysis is performed on the cathode side of MEA40.
2H ₂ O + 2e ⁻ → H ₂ + 2OH ⁻・ ・ ・ Equation (3)

The oxygen gas generated by electrolysis passes through the electrode catalyst 41 and is supplied into the first electrolysis chamber 60. At this time, the oxygen gas is fine bubbles, but the presence of the feeding body 35 keeps the oxygen gas in the state of fine bubbles. The oxygen gas is dispersed and dissolved in the electrolyzed water (electrolyzed raw water) flowing in the first electrolysis chamber 60. The entire amount of this electrolyzed water is supplied into the second electrolyzed chamber 70 through the distribution pipe 19. The hydrogen gas generated by electrolysis passes through the electrode catalyst 43 and is supplied into the second electrolysis chamber 70. At this time, the hydrogen gas is in the state of fine bubbles, but the presence of the feeding body 37 keeps the hydrogen gas in the state of fine bubbles. The hydrogen gas is dispersed and dissolved in the electrolyzed water flowing in the second electrolysis chamber 70. The electrolyzed water discharged from the second electrolyzed chamber 70 is supplied to the electrolyzed water receiving container 25 through the activated carbon filter 23 through the pipe 21.

The current applied to the electrolytic raw water is preferably 0.5 to 10 (A), particularly preferably 1.0 to 3.0 (A), with respect to the electrolytic raw water having a flow rate of 0.1 (L) per minute. If it is less than 0.5 (A), the amount of dissolved oxygen and the amount of dissolved hydrogen in the electrolyzed water cannot be made sufficiently higher than that in the electrolyzed raw water. If it exceeds 10 (A), a large current flows, so that the fatigue of MEA increases and the electrolysis efficiency tends to drop extremely. Further, the amount of electrolyzed electricity per 100 (mL) of raw electrolyzed water is preferably 30 to 600 couron, more preferably 60 to 180 couron.

The flow rate of the electrolytic raw water supplied to the electrolytic cell 50 is preferably 0.1 to 10 (L / min), particularly preferably 0.2 to 1 (L / min).

The supply of the electrolytic raw water in the apparatus 100 can be performed by connecting to a tap of the water supply instead of the electrolytic raw water storage container. In this case, since the tap water and the electrolyzed water obtained by electrolyzing the tap water in the apparatus can be transferred by the water pressure of the tap water, the pump 15 can be omitted.

The electrical conductivity of the electrolytic raw water is preferably 0.5 to 100 (mS / m), more preferably 0.5 to 20 (mS / m). Further, since this device can efficiently perform electrolysis even if no electrolyte is added, tap water is preferable. When adding an electrolyte, it is preferable to use an electrolyte that does not contain chloride ions.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples.

[Example 1]
The apparatus shown in FIGS. 1 and 2 was configured. The solid polymer electrolyte membrane is a fluoropolymer membrane having a sulfonic acid group with a thickness of 182 (μm), and the electrode catalyst is 12.5 (μm) iridium on the anode side and 12.5 (μm) on the cathode side. μm) of platinum was used.
Electrolyzed raw water (tap water) having an electrical conductivity of 15.0 (mS / m) at a water temperature of 24 (° C.) is placed in a 1200 (ml) electrolytic raw water storage container 13 and pumped into an electrolytic cell 50 using a pump 15. At the same time, electrolysis was started at a current of 2 (A) and a voltage of 2.4 (V). The flow rate of the electrolytic raw water was 230 (mL) per minute. The physicochemical parameters immediately after the formation of the obtained electrolyzed water were measured. The measurement items are pH, oxidation-reduction potential ORP (mv), dissolved oxygen OD (ppm), dissolved hydrogen DH (ppm), electrical conductivity EC (mS / m), free chlorine concentration FC (ppm), and dissociation index pKw. is there. The results are shown in Table 1.

[Example 2]
Water having an electrical conductivity of 0.51 (mS / m) at a water temperature of 24 (° C.) obtained by treating tap water using a reverse osmosis membrane (RO membrane) device is used as electrolyzed raw water, and the electrolyzed condition is current 2 ( Electrolyzed water was obtained in the same manner as in Example 1 except that the voltage was changed to 2.8 (V) in A).

[Example 3]
Except for changing the electrolyzed raw water to French mineral water (Vittel, registered trademark) with electrical conductivity of 92.9 (mS / m) and changing the electrolyzing conditions to current 2 (A) and voltage 1.9 (V). Electrolyzed water was obtained in the same manner as in Example 1.

[Comparative Example 1]
Electrolyzed water was obtained in the same manner as in Example 1 except that the activated carbon filter 23 was omitted from the apparatus of Example 1.

[Reference Example 1]
Electrolyzed water was obtained in the same manner as in Example 1. Further, the case where the feeding bodies 35 and 37 were omitted from the apparatus of the first embodiment was also compared.

100 ... Electrolyzed water production equipment 11 ... Housing 13 ... Electrolyzed raw water storage container 15 ... Pumps 17, 21 ... Piping 19 ... Flow pipe 23 ... Activated charcoal filter 25 ... Electrolyzed water receiving container 27 ... Control unit 29 ... Lid 31, 33 ... Multipole plate 35, 37 ... Feeding body 40 ... Membrane-electrode assembly 41, 43 ... Electrode catalyst 45 ... Solid polymer electrolyte membrane 60 ... Anode chamber 70 ... Cathode chamber

Claims (5)

An electrolyzed water producing apparatus including an electrolyzed raw water supply means, an electrolytic cell connected to the electrolytic raw water supply means, and an activated carbon filter connected to the outlet side of the electrolytic cell.
The electrolytic cell is formed in the shape of a hollow box, and includes a pair of multi-pole plates that are closely attached to the facing inner walls and arranged in parallel with each other.
A film-electrode junction composed of a solid polymer electrolyte membrane and a liquid-permeable electrode catalyst formed in close contact with each surface of the solid polymer electrolyte membrane is parallel to the dipole plate between the dipole plates. The inside of the electrolytic cell is partitioned, and a first electrolytic cell and a second electrolytic cell are formed between the double electrode plate and the film-electrode joint, respectively, and the first electrolytic cell is formed. The outlet side and the inlet side of the second electrolytic cell are liquidtightly connected to each other outside the electrolytic cell.
Are substantially uniformly disposed respectively in said first electrolytic chamber and said second electrolytic chamber, said double electrode plate and the film - and a respective electrode catalyst of the electrode assembly in each liquid permeability feeder for electrically connecting It is configured with a metal mesh with a three-dimensional structure with a wire diameter of 10 to 300 (μm).
The thickness of each of the electrode catalysts is 1 to 100 (μm).
An electrolyzed water producing apparatus characterized in that the distance between the double electrode plate and the electrode catalyst is 1.0 to 3.0 (mm), respectively. The electrolyzed water production apparatus according to claim 1, wherein the material of the electrode catalyst is platinum or an iridium alloy, respectively. A method for producing electrolyzed water using the electrolyzed water producing apparatus according to claim 1.
The raw electrolysis water is sequentially sent to the first electrolysis chamber and the second electrolysis chamber of the electrolytic cell, and at the same time.
Water is electrolyzed in the membrane-electrode assembly by energizing the membrane-electrode assembly from the multi-electrode plate arranged in the electrolytic cell through the feeder.
Oxygen gas and hydrogen gas generated by electrolysis are sequentially dissolved in water circulating inside the first electrolysis chamber and the second electrolysis chamber, respectively, to obtain electrolyzed water.
Next, a method for producing electrolyzed water, which comprises passing the electrolyzed water discharged from the second electrolyzing chamber through an activated carbon filter. The method for producing electrolyzed water according to claim 3 , wherein the electrolyzed raw water has an electric conductivity of 0.5 to 100 (mS / m). The method for producing electrolyzed water according to claim 3 , wherein the amount of electrolyzed electricity per 100 (mL) of electrolyzed raw water is 60 to 180 coulomb.

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