JP2019005679A - Electrolyzed water generator - Google Patents

Abstract

To provide an electrolyzed water generator possible to produce slightly acidic water or weakly acidic water having a stable pH and effective chlorine concentration.SOLUTION: An electrolyzed water generator 10 includes: a first electrolysis chamber 12, a second electrolysis chamber 14, a central electrolysis chamber 16 disposed between the first electrolysis chamber 12 and the second electrolysis chamber 14, a first diaphragm 18, a second diaphragm 20, a first electrode pair 26 composed of a first electrode 22 and a second electrode 24, a second electrode pair 32 composed of a third electrode 28 and a fourth electrode 30, a third electrode pair 38 composed of a fifth electrode 34 and a sixth electrode 36, a fourth electrode pair 44 composed of a seventh electrode 40 and an eighth electrode 42, power supplies PW1 and PW2 for applying voltages to the first to fourth electrode pairs, an electrolyte replenishing tank 54 for supplying an electrolyte into a raw water supplied to the first electrolysis chamber 12 and the second electrolysis chamber 14, and a circulation tank 70 for circulating an electrolysis promoter in the central electrolysis chamber 16.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an electrolyzed water generating apparatus.

  In general, the electrolyzed water generated in the electrolyzed water generator includes alkaline water, weakly acidic water, strongly acidic water, and the like. Alkaline water is said to have effects such as degreasing, washing, and rust prevention. Strongly acidic water is said to have effects such as cleaning, sterilization, and astringent. Weakly acidic water is said to have effects such as washing, sterilization, bleaching, deodorization, and astringent.

Hypochlorous acid is known to change its state depending on pH. For example, in the region where the pH is about 2.0 to 3.5, a part of hypochlorous acid (HClO) is changed to dissolved chlorine gas (Cl ₂ ) by the reaction of the following formula (1).

In the region where the pH is about 8 to 9, a part of hypochlorous acid (HClO) is dissociated into hypochlorite ions (ClO ⁻ ) and hydrogen ions (H ⁺ ) by the reaction of the following formula (2).

  In the region where the pH is about 5.0 to 6.5, non-dissociated hypochlorous acid (HClO) is present in a high ratio (about 90% or more).

Of the hypochlorous acid (HClO), hypochlorite ion (ClO ⁻ ), and dissolved chlorine gas (Cl ₂ ) in water, hypochlorous acid (HClO) has the highest sterilizing power and safety. Yes, hypochlorous acid water with a high concentration of hypochlorous acid has a pH of 5.0 to 6.5, which is used for cleaning the mouth, washing and sterilizing clothes, bleaching, washing and sterilizing vegetables, etc. Washing and sterilization, sterilization of fingers, and recently, it has been used as dental sterilizing water (for example, Patent Documents 1 and 2).

  In general, the electrolyzed water generating apparatus includes a one-chamber electrolytic cell having no diaphragm between the anode and the cathode, and a two-chamber electrolytic cell in which the anode and the cathode are partitioned by a diaphragm such as an ion exchange membrane. Some are used and others are used in combination. For example, in Patent Document 3, an aqueous solution in which a predetermined amount of sodium chloride (NaCl) is dissolved in an aqueous hydrochloric acid (HCl) solution having a predetermined concentration is electrolyzed using a one-chamber type diaphragmless electrolytic cell, and the pH is 3-7. An electrolyzed water generating apparatus capable of generating the following hypochlorous acid water is disclosed.

  Patent Document 4 is an electrolyzed water generating apparatus using a two-chamber electrolytic cell, which includes a chloride salt such as sodium chloride and potassium chloride, and a compound that exhibits alkalinity when dissolved in water such as sodium metasilicate. Electrolyzing the water to which the solution has been added, generating strong alkaline water having a pH of 10 to 12.5 on the cathode side of the electrolytic cell, and generating hypochlorous acid sterilizing water having a pH of 3 to 7.5 on the anode side, An electrolyzed water generating apparatus capable of simultaneously generating strong alkaline water and hypochlorous acid sterilized water is disclosed.

In Patent Document 5, water is electrolyzed in a two-chamber type diaphragm electrolyzer, and the obtained alkaline water and acidic water are separately discharged from a pair of drain pipes, and chloride is obtained in a one-chamber type diaphragm electrolyzer. Electrolyze the aqueous solution to adjust the water containing hypochlorous acid, connect the discharge pipe that discharges this hypochlorous acid-containing water to the discharge pipe from the diaphragm membrane electrolytic cell, alkaline water, acidic water, And soft sterilizing water containing a lot of hypochlorous acid (HClO) at a pH of about 3 to 7, and a hard sterilizing water containing a pH of 3 or less and a lot of chlorine (Cl ₂ ) An apparatus for supplying is disclosed.

In Patent Document 6, an aqueous solution containing a chloride salt such as sodium chloride is electrolyzed in a two-chamber type diaphragm membrane electrolytic cell to produce strong alkaline water having a pH of 10.5 to 13.5 on the cathode side, Strong acidic water containing chlorine gas (Cl ₂ ) on the side and mixing this strong acidic water with water to adjust hypochlorous acid water having a pH of 3 to 7.5, strong alkaline water, strong acidic water A method for simultaneously producing hypochlorous acid water is disclosed.

  Patent Document 7 includes a first electrolysis chamber, a second electrolysis chamber, and a central electrolysis chamber partitioned by a diaphragm, and by switching the polarities of the first to fourth electrode pairs provided in these electrolysis chambers. In addition, an electrolyzed water generating device capable of arbitrarily selecting and generating weakly acidic water, slightly acidic water, strongly acidic water, and alkaline water is disclosed.

International Publication WO2009 / 098870 International Publication WO2007 / 072697 JP-A-4-131184 Japanese Patent Laid-Open No. 9-262587 Japanese Patent Application Laid-Open No. 6-312189 Japanese Patent Laid-Open No. 10-76270 JP2015-112570A

  For example, in the electrolyzed water generating device disclosed in Patent Document 7, when alkaline water is generated in the first electrolysis chamber and the second electrolysis chamber, the pH in the circulation tank in which the aqueous electrolyte solution is circulated in the central electrolysis chamber is lowered. There is a problem that a large amount of chlorine gas is generated inside the circulation tank. Moreover, in the electrolyzed water generating apparatus disclosed in Patent Document 7, when the slightly acidic water or the weakly acidic water is continuously generated in the first electrolysis chamber and the second electrolysis chamber, the pH in the circulation tank is increased, and the generated water is increased. Since pH also rose, there existed a problem that the effective chlorine concentration of the produced | generated slightly acidic water or weakly acidic water will fall. Furthermore, in the electrolyzed water generating apparatus disclosed in Patent Document 7, since it is necessary to replenish water to the circulation tank, there is a problem that overflow water is discharged from the circulation tank. Moreover, in the conventional electrolyzed water generating apparatus, there existed a problem that the pH and effective chlorine concentration which generate | occur | produce the slightly acidic water or weakly acidic water were not stabilized.

  Then, an object of this invention is to provide the electrolyzed water generating apparatus which can produce | generate the slightly acidic water which has stable pH and effective chlorine concentration, or weak acidic water.

The electrolyzed water generating apparatus of the present invention is as follows.
(1) a first electrolysis chamber, a second electrolysis chamber, a central electrolysis chamber disposed between the first electrolysis chamber and the second electrolysis chamber,
A diaphragm disposed between the first electrolysis chamber and the central electrolysis chamber, and between the second electrolysis chamber and the central electrolysis chamber;
A first electrode pair comprising a first electrode provided in the first electrolysis chamber and a second electrode provided in the central electrolysis chamber;
A second electrode pair comprising a third electrode provided in the first electrolysis chamber and a fourth electrode provided in the central electrolysis chamber;
A third electrode pair comprising a fifth electrode provided in the second electrolysis chamber and a sixth electrode provided in the central electrolysis chamber;
A fourth electrode pair comprising a seventh electrode provided in the second electrolysis chamber and an eighth electrode provided in the central electrolysis chamber;
A power source for applying a voltage to the first to fourth electrode pairs;
An electrolyte supply means for supplying an electrolyte into the raw water supplied to the first electrolysis chamber and the second electrolysis chamber;
An electrolyzed water generating apparatus comprising: an electrolysis promoter circulating means for circulating an electrolysis promoter in the central electrolysis chamber.
(2) It further comprises polarity switching means for switching the polarity of at least one of the first to fourth electrode pairs,
In the first operation mode in which slightly acidic or weakly acidic hypochlorous acid water is generated in the first electrolysis chamber and the second electrolysis chamber, the first electrode is an anode, the second electrode is a cathode, and the third electrode The electrolyzed water generation according to (1), wherein is a cathode, the fourth electrode is an anode, the fifth electrode is an anode, the sixth electrode is a cathode, the seventh electrode is a cathode, and the eighth electrode is an anode. apparatus.
(3) In a second operation mode in which alkaline water is generated in the first electrolysis chamber and the second electrolysis chamber, the first electrode is a cathode, the second electrode is an anode, the third electrode is a cathode, The electrolyzed water generating apparatus according to (2), wherein the four electrodes are anodes, the fifth electrode is a cathode, the sixth electrode is an anode, the seventh electrode is a cathode, and the eighth electrode is an anode.

(4) a first electrolysis chamber, a second electrolysis chamber, a diaphragm disposed between the first electrolysis chamber and the second electrolysis chamber,
A first electrode pair comprising a first electrode provided in the first electrolysis chamber and a second electrode provided in the second electrolysis chamber;
A second electrode pair comprising a third electrode provided in the first electrolysis chamber and a fourth electrode provided in the second electrolysis chamber;
A power supply for applying a voltage to the first and second electrode pairs;
An electrolyte supply means for supplying an electrolyte into the raw water supplied to the second electrolysis chamber;
An electrolyzed water generating apparatus comprising: an electrolysis promoter circulating means for circulating an electrolysis promoter in the first electrolysis chamber.
(5) further comprising polarity switching means for switching the polarity of at least one of the first and second electrode pairs;
In the first operation mode in which slightly acidic or weakly acidic hypochlorous acid water is generated in the second electrolysis chamber, the first electrode is a cathode, the second electrode is an anode, the third electrode is an anode, the fourth electrode The electrolyzed water generating apparatus according to (4), wherein the electrode is a cathode.
(6) In the second operation mode in which alkaline water is generated in the second electrolysis chamber, the first electrode is an anode, the second electrode is a cathode, the third electrode is an anode, and the fourth electrode is a cathode. The electrolyzed water generating apparatus according to (5) above.

(7) The electrolyzed water generator according to any one of (1) to (6), wherein the electrolysis promoter is an alkaline aqueous solution.

(8) The electrolyzed water generating device according to (7), wherein the alkaline aqueous solution is a potassium carbonate aqueous solution, a sodium carbonate aqueous solution, or a sodium hydrogen carbonate aqueous solution.

(9) The electrolyzed water generating apparatus according to any one of (1) to (8), wherein the electrolyte is sodium chloride or potassium chloride.

(10) The electrolyzed water generating device according to any one of (1) to (9), wherein the diaphragm is a non-permeable ion exchange membrane.

  ADVANTAGE OF THE INVENTION According to this invention, the electrolyzed water generating apparatus which can produce | generate the slightly acidic water which has stable pH and effective chlorine concentration, or weakly acidic water can be provided.

It is a schematic block diagram of the electrolyzed water generating apparatus which concerns on 1st Embodiment of this invention. It is a schematic block diagram of the electrolyzed water generating apparatus which concerns on 2nd Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[First Embodiment]
FIG. 1 is a schematic configuration diagram of an electrolyzed water generating apparatus according to the first embodiment of the present invention.
As shown in FIG. 1, the electrolyzed water generating apparatus 10 includes a first electrolysis chamber 12, a second electrolysis chamber 14, and a central electrolysis chamber 16 disposed between the first electrolysis chamber 12 and the second electrolysis chamber 14. I have. A first diaphragm 18 is disposed between the first electrolysis chamber 12 and the central electrolysis chamber 16. A second diaphragm 20 is disposed between the second electrolysis chamber 14 and the central electrolysis chamber 16.

  The electrolyzed water generating apparatus 10 is provided in the first electrolysis chamber 12 and the first electrode pair 26 including the first electrode 22 provided in the first electrolysis chamber 12 and the second electrode 24 provided in the central electrolysis chamber 16. The second electrode pair 32 including the third electrode 28 and the fourth electrode 30 provided in the central electrolysis chamber 16, and the fifth electrode 34 and the central electrolysis chamber 16 provided in the second electrolysis chamber 14 are provided. A third electrode pair 38 comprising the sixth electrode 36, a seventh electrode 40 provided in the second electrolysis chamber 14 and a fourth electrode pair 44 comprising the eighth electrode 42 provided in the central electrolysis chamber 16. I have.

  The electrolyzed water generating apparatus 10 applies a voltage to the first power supply PW1 that applies a voltage to the first electrode pair 26 and the third electrode pair 38, and to the second electrode pair 32 and the fourth electrode pair 44. A second power supply PW2 is provided.

  The electrolyzed water generating apparatus 10 includes a first polarity switching unit 46 that can switch the polarity of the first electrode pair 26 and a second polarity switching unit 48 that can switch the polarity of the third electrode pair 38. I have. Here, “switching the polarity” means inverting the cathode and the anode.

  The electrolyzed water generating apparatus 10 includes a first current adjusting unit 50 that can adjust the current flowing through the second electrode pair 32 and a second current that can adjust the current flowing through the fourth electrode pair 44. Adjustment means 52 is provided.

  The 1st diaphragm 18 and the 2nd diaphragm 20 are comprised by the impermeable ion-exchange membrane. This ion exchange membrane may be a cation exchange membrane or an anion exchange membrane. The first diaphragm 18 and the second diaphragm 20 are preferably impermeable cation exchange membranes.

  Known electrode materials can be used for the first to eighth electrodes. For example, an electrode obtained by coating a base material made of titanium or a titanium alloy with a film containing one or more metals selected from the group consisting of platinum, iridium, palladium, and tantalum can be used. The shape of the electrode is not particularly limited, and for example, a rectangular plate electrode can be used. When considering the generation efficiency of hypochlorous acid, it is preferable to use an electrode obtained by coating a base plate made of, for example, titanium or a titanium alloy with a mixed plating of platinum and iridium.

  As the first power supply PW1 and the second power supply PW2, a known DC power supply can be used. For example, a constant current or constant voltage switching power supply can be used.

  As the first polarity switching means 46 and the second polarity switching means 48, a known device capable of switching the polarity of the voltage applied to the electrode pair (inverting the anode and the cathode) can be used. Is possible. As such a device, for example, a polarity switching relay switch can be used.

  As the first current adjusting means 50 and the second current adjusting means 52, any apparatus can be used as long as it can adjust the magnitude of the current flowing through each electrode pair.

  As shown in FIG. 1, the electrolyzed water generating apparatus 10 includes an electrolyte replenishing tank 54 for replenishing an electrolyte consumed by the production of electrolyzed water. The aqueous electrolyte solution prepared in the electrolyte replenishing tank 54 is added to the raw water supplied to the first electrolysis chamber 12 and the second electrolysis chamber 14.

  The electrolyte replenishment tank 54 is filled with an electrolyte 56 for preparing an aqueous electrolyte solution by dissolving in water. For example, a chloride salt can be used as the electrolyte 56. For example, at least one chloride salt selected from the group consisting of calcium chloride, ammonium chloride, sodium chloride and potassium chloride, which is recognized as a food additive by the Ministry of Health, Labor and Welfare, can be used. In this, it is preferable to use sodium chloride and / or potassium chloride in consideration of the molecular weight of the chloride salt, availability, ease of storage management, solubility and the like.

A water replenishment pipe 58 for replenishing water in the electrolyte replenishment tank 54 is connected to the upper part of the electrolyte replenishment tank 54.
The electrolyte replenishment tank 54 is provided with a float valve 60 for controlling the amount of water from the water replenishment pipe 58 so that the liquid level in the electrolyte replenishment tank 54 is constant.

  The electrolyzed water generating apparatus 10 includes a raw water supply pipe 62 for supplying raw water to the first electrolysis chamber 12 and the second electrolysis chamber 14. The raw water supply pipe 62 branches to a water replenishment pipe 58 for replenishing the electrolyte replenishment tank 54 with water. The raw water supply pipe 62 is connected to the lower portions of the first electrolysis chamber 12 and the second electrolysis chamber 14, respectively.

  The aqueous electrolyte solution prepared in the electrolyte replenishment tank 54 is fed into the raw water flowing through the raw water supply pipe 62 by the electrolyte supply pump 64. The electrolyte replenishment tank 54 and the electrolyte supply pump 64 correspond to the “electrolyte supply means” of the present invention. The amount of the electrolyte aqueous solution fed into the raw water flowing through the raw water supply pipe 62 can be adjusted by the electrolyte supply pump 64.

  As raw water supplied to the 1st electrolysis room 12 and the 2nd electrolysis room 14, tap water, soft water, pure water, etc. can be used, for example.

  The electrolyzed water generating apparatus 10 includes a circulation tank 70 and a circulation pump 72 for circulating the electrolysis promoter to the central electrolysis chamber 16. The circulation tank 70 and the circulation pump 72 correspond to the “electrolysis promoter circulation means” of the present invention.

An electrolysis promoter is stored in the circulation tank 70. The electrolysis promoter is an aqueous electrolyte solution that can promote electrolysis in the first to fourth electrode pairs 26, 32, 38, 44. As the electrolysis promoter, an alkaline aqueous solution is preferably used. As the electrolysis promoter, for example, an aqueous solution in which a carbonate or bicarbonate such as potassium carbonate (K ₂ CO ₃ ), sodium carbonate (Na ₂ CO ₃ ), sodium bicarbonate (NaHCO ₃ ) or the like is dissolved is used. Is preferred.

  By circulating the alkaline electrolysis promoter to the central electrolysis chamber 16, the conductivity in the first to fourth electrode pairs 26, 32, 38, 44 can be improved and electrolysis can be promoted. In addition, when alkaline water is generated in the first electrolysis chamber 12 and the second electrolysis chamber 14, it is possible to suppress the generation of chlorine gas due to the strong circulation of the circulating liquid circulating in the central electrolysis chamber 16.

An inflow pipe 74 for allowing the electrolysis promoter stored in the circulation tank 70 to flow into the central electrolysis chamber 16 is connected to the lower part of the central electrolysis chamber 16.
A return pipe 76 for returning the electrolysis promoter from the central electrolysis chamber 16 to the circulation tank 70 is connected to the upper part of the central electrolysis chamber 16.
Therefore, the electrolysis promoter stored in the circulation tank 70 circulates between the circulation tank 70 and the central electrolysis chamber 16 via the inflow pipe 74 and the return pipe 76.

  A degassing pipe 78 for releasing chlorine gas and / or hydrogen gas generated inside the central electrolysis chamber 16 is installed on the upper part of the circulation tank 70.

  A first electrolyzed water discharge pipe 80 is connected to the upper part of the first electrolysis chamber 12. A second electrolyzed water discharge pipe 82 is connected to the upper part of the second electrolysis chamber 14. The electrolyzed water generated in the first electrolysis chamber 12 is discharged to the outside through the first electrolyzed water discharge pipe 80. The electrolyzed water generated in the second electrolysis chamber 14 is discharged to the outside through the second electrolyzed water discharge pipe 82. A flow path switching valve 84 is installed in the middle of the second electrolyzed water discharge pipe 82, and the electrolytic water generated in the first electrolysis chamber 12 and the second electrolysis chamber 14 is joined by the flow path switching valve 84. The flow path (a) and the flow path (b) for separately discharging the electrolyzed water generated in the first electrolysis chamber 12 and the second electrolysis chamber 14 can be switched.

  The first and second power sources PW1 and PW2, the first and second polarity switching means 46 and 48, and the first and second current adjusting means 50 and 52 are control means for controlling them (see FIG. (Not shown) may be electrically connected. As the control means, for example, a control panel provided with a sequence control circuit, a personal computer, or the like can be used.

  The electrolyzed water generating apparatus 10 of the present embodiment can be operated in the first operation mode and the second operation mode. In each operation mode, the electrolyzed water generating apparatus 10 is controlled as follows.

(1) First operation mode In the first operation mode, the first electrode 22 is an anode, the second electrode 24 is a cathode, the third electrode 28 is a cathode, the fourth electrode 30 is an anode, the fifth electrode 34 is an anode, The sixth electrode 36 is a cathode, the seventh electrode 40 is a cathode, and the eighth electrode 42 is an anode. In the first operation mode, it is possible to take out slightly acidic or weakly acidic hypochlorous acid water from the upper part of the first electrolysis chamber 12 and the second electrolysis chamber 14.

(2) Second operation mode In the second operation mode, the first electrode 22 is a cathode, the second electrode 24 is an anode, the third electrode 28 is a cathode, the fourth electrode 30 is an anode, the fifth electrode 34 is a cathode, The sixth electrode 36 is an anode, the seventh electrode 40 is a cathode, and the eighth electrode 42 is an anode. In the second operation mode, alkaline water can be taken out from the upper portions of the first electrolysis chamber 12 and the second electrolysis chamber 14. In the second operation mode, the electrolyte supply pump 64 is stopped and the supply of the electrolyte aqueous solution from the electrolyte replenishment tank 54 to the raw water is stopped.

  The polarities of the electrodes in the first and second operation modes are summarized as shown in Table 1 below.

  It is preferable that the electrolyzed water generating apparatus 10 includes an operation mode switching switch for switching between the first and second operation modes. For example, a push button switch or a touch panel can be used as the operation mode changeover switch. The user can select one of the first and second operation modes with the operation mode switch. Based on the operation mode selected by the user, the control means includes first and second power sources PW1, PW2, first and second polarity switching means 46, 48, and first and second current adjusting means 50. , 52 are controlled.

  Next, the operation method of the electrolyzed water generating apparatus 10 configured as described above will be described in detail. In the following description, the case where the electrolyte replenishment tank 54 is filled with sodium chloride (NaCl) and the sodium chloride is replenished to the water in the first electrolysis chamber 12 and the second electrolysis chamber 14 will be described.

  In order to generate electrolyzed water by the electrolyzed water generator 10, first, raw water is introduced from the raw water supply pipe 62 into the first electrolysis chamber 12 and the second electrolysis chamber 14. Further, the electrolysis promoter is circulated between the circulation tank 70 and the central electrolysis chamber 16 by starting the circulation pump 72. Then, by applying a voltage to the first to fourth electrode pairs 26, 32, 38, 44, electrolysis of water in each electrolytic chamber is started. Thereby, acidic water (slightly acidic water or weakly acidic water) or alkaline water is taken out from the upper part of the first electrolysis chamber 12 and the second electrolysis chamber 14.

In the first electrolysis chamber 12, the second electrolysis chamber 14, and the central electrolysis chamber 16, for example, the following reaction occurs according to the polarity of each electrode.
(Reaction at the cathode)
Generation of hydrogen 2H ₂ O + 2e ⁻ → H ₂ + 2OH ⁻
Formation of alkaline water Na ⁺ + OH ⁻ ⇔ NaOH
(Reaction at the anode)
Generation of oxygen 2H ₂ O → O ₂ + 4H ⁺ + 4e ⁻ (generation of acidic water)
Generation of chlorine 2Cl ⁻ → Cl ₂ + 2e ⁻
Formation of hypochlorous acid Cl ₂ + H ₂ O → HCl + HClO

  In the first operation mode, in the first electrolysis chamber 12 and the second electrolysis chamber 14, the first electrode 22 and the fifth electrode 34 are anodes, and the third electrode 28 and the seventh electrode 40 are cathodes. The magnitude of the current flowing through the second electrode pair 32 is adjusted by the first current adjusting means 50, and the magnitude of the current flowing through the fourth electrode pair 44 is adjusted by the second current adjusting means 52. Thereby, slightly acidic water or weakly acidic water can be generated in the first electrolysis chamber 12 and the second electrolysis chamber 14. Specifically, the current flowing through the first electrode pair 26 is adjusted to be larger than the current flowing through the second electrode pair 32, and the current flowing through the third electrode pair 38 is adjusted to the fourth electrode pair. It adjusts so that it may become larger than the electric current which flows into 44. Thereby, slightly acidic water or weakly acidic water can be generated in the first electrolysis chamber 12 and the second electrolysis chamber 14.

  In the second operation mode, in the first electrolysis chamber 12 and the second electrolysis chamber 14, the first electrode 22, the third electrode 28, the fifth electrode 34, and the seventh electrode 40 are cathodes. Therefore, alkaline water can be generated in the first electrolysis chamber 12 and the second electrolysis chamber 14.

  Thus, according to the electrolyzed water generating apparatus 10 of 1st Embodiment, the 1st operation mode which produces | generates slightly acidic water or weakly acidic water and the 2nd operation mode which produces | generates alkaline water are arbitrarily selected. be able to. Since the electrolyzed water produced | generated according to a use can be switched easily, the highly convenient electrolyzed water generating apparatus can be implement | achieved.

  According to the electrolyzed water generating apparatus 10 of the present embodiment, electrolyzed water having an arbitrary pH value can be easily manufactured only by electrical control. For this reason, unlike the conventional electrolyzed water generating apparatus, a mechanism for adjusting pH by mixing acidic water and alkaline water is unnecessary, and the electrolyzed water generating apparatus can be manufactured at low cost.

  According to the electrolyzed water generating apparatus 10 of this embodiment, the pH is 2 which is a food additive (sterilizing agent) approved by the Ministry of Health, Labor and Welfare without using a neutralizing agent (hydrochloric acid, sodium hypochlorite, etc.). It can be produced by arbitrarily selecting weakly acidic water having a pH of more than 0.7 and not more than 5.0 and slightly acidic water having a pH of more than 5.0 and not more than 6.5. Moreover, alkaline water having a pH of 9.0 or more can also be produced. Therefore, it is possible to generate safe electrolyzed water that can be used, for example, for food disinfection and sterilization.

  According to the electrolyzed water generating apparatus 10 of the present embodiment, since the first diaphragm 18 and the second diaphragm 20 are non-permeable ion exchange membranes, and between the first electrolysis chamber 12 and the central electrolysis chamber 16, and The movement of water between the second electrolysis chamber 14 and the central electrolysis chamber 16 can be restricted. Therefore, the slightly acidic water having a stable pH and effective chlorine concentration in the first electrolysis chamber 12 and the second electrolysis chamber 14 without being influenced by the change in pH of the electrolysis promoter stored in the circulation tank 70. Alternatively, weakly acidic water can be generated.

  According to the electrolyzed water generating apparatus 10 of the present embodiment, since the first diaphragm 18 and the second diaphragm 20 are non-permeable ion exchange membranes, and between the first electrolysis chamber 12 and the central electrolysis chamber 16, and The movement of water between the second electrolysis chamber 14 and the central electrolysis chamber 16 can be restricted. Therefore, the slightly acidic water having an arbitrary pH and effective chlorine concentration in the first electrolysis chamber 12 and the second electrolysis chamber 14 without being influenced by the pressure in the circulation tank 70 and the pressure in the central electrolysis chamber 16. Or it is possible to produce | generate weakly acidic water stably.

  According to the electrolyzed water generating apparatus 10 of the present embodiment, since the first diaphragm 18 and the second diaphragm 20 are non-permeable ion exchange membranes, and between the first electrolysis chamber 12 and the central electrolysis chamber 16, and The movement of water between the second electrolysis chamber 14 and the central electrolysis chamber 16 can be restricted. For this reason, it is unnecessary to supply water to the circulation tank 70 and the central electrolytic chamber 16 (it is only necessary to replenish electrolyte), and it is possible to suppress discharge of overflow water from the circulation tank 70. It is possible to realize an electrolyzed water generating apparatus that has a small amount of drainage and is environmentally friendly.

[Second Embodiment]
FIG. 2 is a schematic configuration diagram of the electrolyzed water generating apparatus 110 according to the second embodiment of the present invention.
As shown in FIG. 2, the electrolyzed water generating apparatus 110 according to the second embodiment is disposed between the first electrolysis chamber 112, the second electrolysis chamber 114, and the first electrolysis chamber 112 and the second electrolysis chamber 114. A diaphragm 116 is provided.

  The electrolyzed water generating apparatus 110 includes a first electrode pair 126 including a first electrode 122 provided in the first electrolysis chamber 112 and a second electrode 124 provided in the second electrolysis chamber 114, and a first electrolysis chamber 112. A second electrode pair 132 including a third electrode 128 provided and a fourth electrode 130 provided in the second electrolysis chamber 114 is provided.

  The electrolyzed water generating apparatus 110 includes a first power supply PW11 that applies a voltage to the first electrode pair 126 and a second power supply PW12 that applies a voltage to the second electrode pair 132.

  The electrolyzed water generating apparatus 110 includes polarity switching means 134 that can switch the polarity of the first electrode pair 126. Here, “switching the polarity” means inverting the cathode and the anode.

  The electrolyzed water generating apparatus 110 includes a current adjusting unit 136 that can adjust the current flowing through the second electrode pair 132.

  The diaphragm 116 is configured by a non-permeable ion exchange membrane. This ion exchange membrane may be a cation exchange membrane or an anion exchange membrane. The diaphragm 116 is preferably a non-permeable cation exchange membrane.

  Known electrode materials can be used for the first electrode to the fourth electrode. For example, an electrode obtained by coating a base material made of titanium or a titanium alloy with a film containing one or more metals selected from the group consisting of platinum, iridium, palladium, and tantalum can be used. The shape of the electrode is not particularly limited, and for example, a rectangular plate electrode can be used. When considering the generation efficiency of hypochlorous acid, it is preferable to use an electrode obtained by coating a base plate made of, for example, titanium or a titanium alloy with a mixed plating of platinum and iridium.

  As the first power supply PW11 and the second power supply PW12, a known DC power supply can be used. For example, a constant current or constant voltage switching power supply can be used.

  As the polarity switching means 134, a known device capable of switching the polarity of the voltage applied to the electrode pair (inverting the anode and the cathode) can be used. As such a device, for example, a polarity switching relay switch can be used.

  Any device can be used as the current adjusting means 136 as long as the device can adjust the magnitude of the current flowing through each electrode pair.

  As shown in FIG. 2, the electrolyzed water generator 110 includes an electrolyte replenishing tank 138 for replenishing the electrolyte consumed by the production of electrolyzed water. The aqueous electrolyte solution prepared in the electrolyte replenishing tank 138 is added to the raw water supplied to the second electrolysis chamber 114.

  The electrolyte replenishing tank 138 is filled with an electrolyte 140 for preparing an aqueous electrolyte solution by dissolving in water. For example, a chloride salt can be used as the electrolyte 140. For example, at least one chloride salt selected from the group consisting of calcium chloride, ammonium chloride, sodium chloride and potassium chloride, which is recognized as a food additive by the Ministry of Health, Labor and Welfare, can be used. In this, it is preferable to use sodium chloride and / or potassium chloride in consideration of the molecular weight of the chloride salt, availability, ease of storage management, solubility and the like.

A water replenishing pipe 142 for replenishing water inside the electrolyte replenishing tank 138 is connected to the upper part of the electrolyte replenishing tank 138.
The electrolyte replenishment tank 138 is provided with a float valve 144 for controlling the amount of water from the water replenishment pipe 142 so that the liquid level in the electrolyte replenishment tank 138 is constant.

  The electrolyzed water generator 110 includes a raw water supply pipe 146 for supplying raw water to the second electrolysis chamber 114. The raw water supply pipe 146 branches to a water replenishment pipe 142 for replenishing the electrolyte replenishment tank 138 with water. The raw water supply pipe 146 is connected to the lower part of the second electrolysis chamber 114.

  The aqueous electrolyte solution prepared in the electrolyte replenishing tank 138 is sent into the raw water flowing through the raw water supply pipe 146 by the electrolyte supply pump 148. The electrolyte replenishment tank 138 and the electrolyte supply pump 148 correspond to the “electrolyte supply means” of the present invention. The amount of the electrolyte aqueous solution fed into the raw water flowing through the raw water supply pipe 146 can be adjusted by the electrolyte supply pump 148.

  As raw water supplied to the 2nd electrolysis room 114, tap water, soft water, pure water, etc. can be used, for example.

  The electrolyzed water generator 110 includes a circulation tank 150 and a circulation pump 152 for circulating the electrolysis promoter to the first electrolysis chamber 112. The circulation tank 150 and the circulation pump 152 correspond to the “electrolysis promoter circulation means” of the present invention.

An electrolysis promoter is stored in the circulation tank 150. The electrolysis promoter is an aqueous electrolyte solution that can promote electrolysis in the first and second electrode pairs 126 and 132. As the electrolysis promoter, an alkaline aqueous solution is preferably used. As the electrolysis promoter, for example, an aqueous solution in which a carbonate or bicarbonate such as potassium carbonate (K ₂ CO ₃ ), sodium carbonate (Na ₂ CO ₃ ), sodium bicarbonate (NaHCO ₃ ) or the like is dissolved is used. Is preferred.

  By circulating the alkaline electrolysis promoter in the first electrolysis chamber 112, the conductivity in the first and second electrode pairs 126 and 132 is improved, and electrolysis can be promoted. In addition, when alkaline water is generated in the second electrolysis chamber 114, it is possible to suppress generation of chlorine gas due to the strong circulation of the circulating liquid circulating in the first electrolysis chamber 112.

An inflow pipe 154 for allowing the electrolysis promoter stored in the circulation tank 150 to flow into the first electrolysis chamber 112 is connected to the lower part of the first electrolysis chamber 112.
A return pipe 156 for returning the electrolysis promoter from the first electrolysis chamber 112 to the circulation tank 150 is connected to the upper part of the first electrolysis chamber 112.
Therefore, the electrolysis promoter stored in the circulation tank 150 circulates between the circulation tank 150 and the first electrolysis chamber 112 via the inflow pipe 154 and the return pipe 156.

  A degassing pipe 158 for releasing chlorine gas and / or hydrogen gas generated inside the first electrolysis chamber 112 is installed on the upper part of the circulation tank 150.

  An electrolyzed water discharge pipe 160 is connected to the upper part of the second electrolysis chamber 114. The electrolyzed water generated in the second electrolysis chamber 114 is discharged to the outside through the electrolyzed water discharge pipe 160.

  The first and second power supplies PW11 and PW12, the polarity switching unit 134, and the current adjusting unit 136 may be electrically connected to a control unit (not shown) for controlling them. As the control means, for example, a control panel provided with a sequence control circuit, a personal computer, or the like can be used.

  The electrolyzed water generating apparatus 110 of the present embodiment can be operated in the first operation mode and the second operation mode. In each operation mode, the electrolyzed water generator 110 is controlled as follows.

(1) First Operation Mode In the first operation mode, the first electrode 122 is a cathode, the second electrode 124 is an anode, the third electrode 128 is an anode, and the fourth electrode 130 is a cathode. In the first operation mode, it is possible to take out slightly acidic or weakly acidic hypochlorous acid water from the upper part of the second electrolysis chamber 114.

(2) Second Operation Mode In the second operation mode, the first electrode 122 is an anode, the second electrode 124 is a cathode, the third electrode 128 is an anode, and the fourth electrode 130 is a cathode. In the second operation mode, alkaline water can be taken out from the upper part of the second electrolysis chamber 114. In the second operation mode, the electrolyte supply pump 148 is stopped, and the supply of the aqueous electrolyte solution from the electrolyte replenishment tank 138 to the raw water is stopped.

  The polarities of the electrodes in the first and second operation modes are summarized as shown in Table 2 below.

  It is preferable that the electrolyzed water generating apparatus 110 includes an operation mode switching switch for switching the first and second operation modes. For example, a push button switch or a touch panel can be used as the operation mode changeover switch. The user can select one of the first and second operation modes with the operation mode switch. The control means controls the first and second power supplies PW11 and PW12, the polarity switching means 134, and the current adjusting means 136 based on the operation mode selected by the user.

  Next, the operation method of the electrolyzed water generating apparatus 110 configured as described above will be described in detail. In the following description, a case will be described in which the electrolyte replenishing tank 138 is filled with sodium chloride (NaCl) and the water in the second electrolysis chamber 114 is replenished with sodium chloride.

  In order to generate electrolyzed water by the electrolyzed water generator 110, first, raw water is introduced from the raw water supply pipe 146 into the second electrolysis chamber 114. Further, the electrolysis promoter is circulated between the circulation tank 150 and the first electrolysis chamber 112 by starting the circulation pump 152. Then, by applying a voltage to the first and second electrode pairs 126 and 132, electrolysis of water in each electrolytic chamber is started. Thereby, acidic water (slightly acidic water or weakly acidic water) or alkaline water is taken out from the upper part of the second electrolysis chamber 114.

In the first electrolysis chamber 112 and the second electrolysis chamber 114, for example, the following reaction occurs according to the polarity of each electrode.
(Reaction at the cathode)
Generation of hydrogen 2H ₂ O + 2e ⁻ → H ₂ + 2OH ⁻
Formation of alkaline water Na ⁺ + OH ⁻ ⇔ NaOH
(Reaction at the anode)
Generation of oxygen 2H ₂ O → O ₂ + 4H ⁺ + 4e ⁻ (generation of acidic water)
Generation of chlorine 2Cl ⁻ → Cl ₂ + 2e ⁻
Formation of hypochlorous acid Cl ₂ + H ₂ O → HCl + HClO

  In the first operation mode, in the second electrolysis chamber 114, the second electrode 124 is an anode and the fourth electrode 130 is a cathode. The current adjustment means 136 adjusts the magnitude of the current flowing through the second electrode pair 132. Thereby, slightly acidic water or weakly acidic water can be generated in the second electrolysis chamber 114. Specifically, the current flowing through the first electrode pair 126 is adjusted to be larger than the current flowing through the second electrode pair 132. Thereby, in the second electrolysis chamber 114, slightly acidic water or weakly acidic water can be generated.

  In the second operation mode, the second electrode 124 and the fourth electrode 130 are cathodes in the second electrolysis chamber 114. Therefore, alkaline water can be generated in the second electrolysis chamber 114.

  Thus, according to the electrolyzed water generating apparatus 110 of 2nd Embodiment, the 1st operation mode which produces | generates slightly acidic water or weakly acidic water and the 2nd operation mode which produces | generates alkaline water are arbitrarily selected. be able to. Since the electrolyzed water produced | generated according to a use can be switched easily, the highly convenient electrolyzed water generating apparatus can be implement | achieved.

  According to the electrolyzed water generating apparatus 110 of the present embodiment, electrolyzed water having an arbitrary pH value can be easily manufactured only by electrical control. For this reason, unlike the conventional electrolyzed water generating apparatus, a mechanism for adjusting pH by mixing acidic water and alkaline water is unnecessary, and the electrolyzed water generating apparatus can be manufactured at low cost.

  According to the electrolyzed water generating apparatus 110 of this embodiment, the pH is 2 which is a food additive (sterilizing agent) approved by the Ministry of Health, Labor and Welfare without using a neutralizing agent (hydrochloric acid, sodium hypochlorite, etc.). It can be produced by arbitrarily selecting weakly acidic water having a pH of more than 0.7 and not more than 5.0 and slightly acidic water having a pH of more than 5.0 and not more than 6.5. Moreover, alkaline water having a pH of 9.0 or more can also be produced. Therefore, it is possible to generate safe electrolyzed water that can be used, for example, for food disinfection and sterilization.

  According to the electrolyzed water generating apparatus 110 of this embodiment, since the diaphragm 116 is a non-permeable ion exchange membrane, the movement of water between the first electrolysis chamber 112 and the second electrolysis chamber 114 can be restricted. . For this reason, the slightly electrolyzed water or the weakly acidic water having a stable pH and effective chlorine concentration is generated in the second electrolysis chamber 114 without being influenced by the change in pH of the electrolysis promoter stored in the circulation tank 150. Is possible.

  According to the electrolyzed water generating apparatus 110 of this embodiment, since the diaphragm 116 is a non-permeable ion exchange membrane, the movement of water between the first electrolysis chamber 112 and the second electrolysis chamber 114 can be restricted. . For this reason, the slightly acidic water or weakly acidic water having an arbitrary pH and effective chlorine concentration in the second electrolysis chamber 114 is not affected by the pressure in the circulation tank 150 and the pressure in the first electrolysis chamber 112. It is possible to generate stably.

  According to the electrolyzed water generating apparatus 110 of this embodiment, since the diaphragm 116 is a non-permeable ion exchange membrane, the movement of water between the first electrolysis chamber 112 and the second electrolysis chamber 114 can be restricted. . For this reason, it is not necessary to supply water to the circulation tank 150 and the first electrolysis chamber 112 (it is sufficient to replenish only the electrolyte), and it is possible to suppress discharge of overflow water from the circulation tank 150. Therefore, it is possible to realize an electrolyzed water generating apparatus that is environmentally friendly with a small amount of waste water.

Examples of the present invention will be described below.
[Example 1]
In Example 1, the test which produces | generates electrolyzed water using the electrolyzed water generating apparatus 10 mentioned above was done.
The test conditions are as follows.
Operation mode: First operation mode (slightly acidic water or weakly acidic water generation mode)
Type of diaphragm: Non-permeable ion-exchange membrane Type of circulating fluid: Electrolysis promoter (10% potassium carbonate aqueous solution)
Replenishment electrolyte type: Sodium chloride Replenishment amount of aqueous electrolyte solution: 50 ml / min
Amount of electrolyzed water generated: 500 ml / min
Voltage value applied to first electrode pair and third electrode pair: 4.1 V
Current value at first electrode pair and third electrode pair: 12 A
Voltage value applied to the second electrode pair and the fourth electrode pair: 4.0 V
Current value in second electrode pair and fourth electrode pair: 4.0 A

  The test results of Example 1 are as shown in Table 3 below.

[Example 2]
In Example 2, the test which produces | generates electrolyzed water using the electrolyzed water generating apparatus 10 mentioned above was done.
The test conditions are as follows.
Operation mode: second operation mode (alkaline water generation mode)
Type of diaphragm: Non-permeable ion-exchange membrane Type of circulating fluid: Electrolysis promoter (10% potassium carbonate aqueous solution)
Replenishment electrolyte type: Sodium chloride Replenishment amount of aqueous electrolyte solution: 0 ml / min
Amount of electrolyzed water generated: 500 ml / min
Voltage value applied to the first electrode pair and the third electrode pair: 3.4V
Current value at first electrode pair and third electrode pair: 12 A
Voltage value applied to the second electrode pair and the fourth electrode pair: 4.0 V
Current value in second electrode pair and fourth electrode pair: 5.3 A

  The test results of Example 2 are as shown in Table 4 below.

[Comparative Example 1]
In the comparative example 1, the test which produces | generates electrolyzed water using the electrolyzed water generating apparatus 10 mentioned above was done.
The test conditions are as follows.
Operation mode: First operation mode (slightly acidic water or weakly acidic water generation mode)
Type of diaphragm: Neutral membrane (water permeable membrane)
Circulating fluid type: Saturated sodium chloride aqueous solution Replenishment electrolyte type: None
Replenishment amount of electrolyte aqueous solution: 0 ml / min
Amount of electrolyzed water generated: 500 ml / min
Voltage value applied to first electrode pair and third electrode pair: 4.5V
Current value at first electrode pair and third electrode pair: 12 A
Voltage value applied to the second electrode pair and the fourth electrode pair: 4.3 V
Current value in second electrode pair and fourth electrode pair: 4.0 A

  The test results of Comparative Example 1 are as shown in Table 5 below.

[Comparative Example 2]
In the comparative example 2, the test which produces | generates electrolyzed water using the electrolyzed water generating apparatus 10 mentioned above was done.
The test conditions are as follows.
Operation mode: second operation mode (alkaline water generation mode)
Type of diaphragm: Neutral membrane (water permeable membrane)
Circulating fluid type: Saturated sodium chloride aqueous solution Replenishing electrolyte type: None Replenishing amount of aqueous electrolyte solution: 0 ml / min
Amount of electrolyzed water generated: 500 ml / min
Voltage value applied to first electrode pair and third electrode pair: 3.1 V
Current value at first electrode pair and third electrode pair: 12 A
Voltage value applied to second electrode pair and fourth electrode pair: 3.6V
Current value in second electrode pair and fourth electrode pair: 5.3 A

  The test results of Comparative Example 2 are as shown in Table 6 below.

  From the results of Example 1 and Example 2, it can be seen that according to the electrolyzed water generating device of the present invention, the pH and concentration of the generated electrolyzed water are stable. Moreover, it turns out that the pressure of circulating water and the pH in a circulating tank are stable.

  In the test result of Comparative Example 1, the pH and concentration of the generated electrolyzed water were not stable. Moreover, the pressure of circulating water was not stable.

  In the test result of Comparative Example 2, since the pH in the circulation tank was lowered, chlorine gas was generated, and the test after 90 minutes could not be continued.

DESCRIPTION OF SYMBOLS 10, 110 Electrolyzed water production | generation apparatus 12 1st electrolysis chamber 14 2nd electrolysis chamber 16 Central electrolysis chamber 18 1st diaphragm 20 2nd diaphragm 22 1st electrode 24 2nd electrode 26 1st electrode pair 28 3rd electrode 30 4th electrode 32 2nd electrode pair 34 5th electrode 36 6th electrode 38 3rd electrode pair 40 7th electrode 42 8th electrode 44 4th electrode pair 46 1st polarity switching means 48 2nd polarity switching Means 50 First current adjustment means 52 Second current adjustment means 54 Electrolyte replenishment tank 62 Raw water supply pipe 64 Electrolyte supply pump 70 Circulation tank 72 Circulation pump 80 First electrolyzed water discharge pipe 82 Second electrolyzed water discharge pipe 112 1st electrolysis chamber 114 2nd electrolysis chamber 116 Diaphragm 122 1st electrode 124 2nd electrode 126 1st electrode pair 128 3rd electrode 130 4th electrode 132 2nd electrode pair 134 Polarity switching means 136 Electricity Flow adjusting means 138 Electrolyte replenishment tank 146 Raw water supply pipe 148 Electrolyte supply pump 150 Circulation tank 152 Circulation pump 160 Electrolyzed water discharge pipes PW1, PW11 First power supply PW1, PW12 Second power supply

Claims (10)

A first electrolysis chamber;
A second electrolysis chamber;
A central electrolysis chamber disposed between the first electrolysis chamber and the second electrolysis chamber;
A diaphragm disposed between the first electrolysis chamber and the central electrolysis chamber, and between the second electrolysis chamber and the central electrolysis chamber;
A first electrode pair comprising a first electrode provided in the first electrolysis chamber and a second electrode provided in the central electrolysis chamber;
A second electrode pair comprising a third electrode provided in the first electrolysis chamber and a fourth electrode provided in the central electrolysis chamber;
A third electrode pair comprising a fifth electrode provided in the second electrolysis chamber and a sixth electrode provided in the central electrolysis chamber;
A fourth electrode pair comprising a seventh electrode provided in the second electrolysis chamber and an eighth electrode provided in the central electrolysis chamber;
A power source for applying a voltage to the first to fourth electrode pairs;
An electrolyte supply means for supplying an electrolyte into the raw water supplied to the first electrolysis chamber and the second electrolysis chamber;
An electrolytic promoter circulating means for circulating an electrolytic promoter in the central electrolytic chamber;
An electrolyzed water generating apparatus comprising: A polarity switching means for switching the polarity of at least one of the first to fourth electrode pairs;
In the first operation mode in which slightly acidic or weakly acidic hypochlorous acid water is generated in the first electrolysis chamber and the second electrolysis chamber, the first electrode is an anode, the second electrode is a cathode, and the third electrode 2. The electrolyzed water generating device according to claim 1, wherein the cathode is the cathode, the fourth electrode is the anode, the fifth electrode is the anode, the sixth electrode is the cathode, the seventh electrode is the cathode, and the eighth electrode is the anode. .   In the second operation mode in which alkaline water is generated in the first electrolysis chamber and the second electrolysis chamber, the first electrode is a cathode, the second electrode is an anode, the third electrode is a cathode, and the fourth electrode is The electrolyzed water generating apparatus according to claim 2, wherein the anode, the fifth electrode is a cathode, the sixth electrode is an anode, the seventh electrode is a cathode, and the eighth electrode is an anode. A first electrolysis chamber;
A second electrolysis chamber;
A diaphragm disposed between the first electrolysis chamber and the second electrolysis chamber;
A first electrode pair comprising a first electrode provided in the first electrolysis chamber and a second electrode provided in the second electrolysis chamber;
A second electrode pair comprising a third electrode provided in the first electrolysis chamber and a fourth electrode provided in the second electrolysis chamber;
A power supply for applying a voltage to the first and second electrode pairs;
An electrolyte supply means for supplying an electrolyte into the raw water supplied to the second electrolysis chamber;
An electrolysis promoter circulating means for circulating an electrolysis promoter in the first electrolysis chamber;
An electrolyzed water generating apparatus comprising: Polarity switching means for switching the polarity of at least one of the first and second electrode pairs;
In the first operation mode in which slightly acidic or weakly acidic hypochlorous acid water is generated in the second electrolysis chamber, the first electrode is a cathode, the second electrode is an anode, the third electrode is an anode, the fourth electrode The electrolyzed water generating apparatus according to claim 4, wherein the electrode is a cathode.   In the second operation mode in which alkaline water is generated in the second electrolysis chamber, the first electrode is an anode, the second electrode is a cathode, the third electrode is an anode, and the fourth electrode is a cathode. 5. The electrolyzed water generating device according to 5.   The electrolyzed water generating apparatus according to any one of claims 1 to 6, wherein the electrolysis promoter is an alkaline aqueous solution.   The electrolyzed water generating device according to claim 7, wherein the alkaline aqueous solution is a potassium carbonate aqueous solution, a sodium carbonate aqueous solution, or a sodium hydrogen carbonate aqueous solution.   The electrolyzed water generating apparatus according to any one of claims 1 to 8, wherein the electrolyte is sodium chloride or potassium chloride.   The electrolyzed water generating apparatus according to claim 1, wherein the diaphragm is a non-permeable ion exchange membrane.

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