JPH0938655A - Electrolytic hypochlorous bactericide water containing ozone, its production and device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce an electrolytic bactericide water in which bactericidal power of hypochlorous acid is enhanced and supplemented by the bactericidal power of ozone, by electrolyzing a water containing chloride and specifying each of the pH, concn. of hypochlorous acid and concn. of ozone. SOLUTION: A part of water supplied from a supply tube 2 is introduced into the anode room 10 of an electrolytic cell 1 having a membrane. The rest of the water is purified by a purifying device 3 to form into pure water, to which ozone is added in an ozone generator 4 and also chloride ion is added from a chemical liquid tank 5. Then the water is introduced to the anode room 9 of the electrolytic cell 1. By electrolyzing water, a water having pH2 to 7, 20-10ppm hypochlorous concn. and 0.1-5ppm ozone, namely a water having each bactericidal power of hypochlorous acid and ozone is produced. The electrolytic cell 1 is divided into the cathode room 10 and the anode room 9 by an electrolytic membrane 8 between the cathode 6 and the anode 7, and the electrolyzed water in these rooms 9, 10 is discharged through a baetericidle water discharge port 13 and a drain 14, respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to electrolytic sterilized water in which ozone is contained in hypochlorous acid water produced by electrolysis, a method for producing the same, and an apparatus for carrying out this method.

[0002]

It is known that electrolytic acid water produced by electrolyzing water containing chloride ions contains hypochlorous acid and has bactericidal activity. This sterilizing water has stronger bactericidal power as the concentration of hypochlorous acid is higher, but depending on the application, it may not be preferable to raise the concentration of hypochlorous acid so much that it is suppressed to about 20 to 100 ppm, In addition, there is a problem that it is not possible to deal with the case where the sterilizing power of the hypochlorous acid concentration or more is required.

On the other hand, in the above-mentioned hypochlorous acid sterilized water produced by electrolysis, when the pH exceeds 7, the amount of hypochlorous acid is drastically reduced and the sterilizing power is lowered. In addition, pH2
In the vicinity of 3, hypochlorous acid is changed to chlorine gas, and similarly, the sterilizing power is sharply reduced.

Therefore, a first object of the present invention is to enhance the sterilizing power of hypochlorous acid sterilizing water by electrolysis with ozone sterilizing power,
Alternatively, it is to provide electrolytic sterilizing water that can be supplemented.

A second object of the present invention is to provide a method for producing the above electrolytic sterilized water.

A third object of the present invention is to provide an apparatus for producing the above electrolytic sterilized water.

[0007]

The first object of the present invention is to contain hypochlorous acid obtained by electrolyzing water containing chloride ions, and ozone, pH 2 to 7, hypochlorous acid. Concentration 2
This is achieved by electrolytic sterilizing water having 0 to 100 ppm and an ozone concentration of 0.1 to 5 ppm.

The method for producing electrolytic sterilizing water for achieving the second object has the following various modes. First
The aspect of, while electrolyzing water with chloride ions in a diaphragm electrolyzer to produce hypochlorous acid water, before electrolysis of hypochlorous acid water production, during electrolysis or after electrolysis, the electrical, By generating ozone by the decomposition method, pH 2 to 7, hypochlorous acid concentration 20 to 100 ppm, ozone concentration 0.1 to 5
It is characterized by adjusting to ppm.

In the second aspect, water containing chloride ions is electrolyzed in a diaphragm electrolyzer to produce hypochlorous acid water, and hypochlorite water produced from the anode chamber of the diaphragm electrolyzer. While mixing and diluting water such as tap water or alkaline water from the cathode chamber, before electrolysis for the generation of hypochlorous acid, during or after electrolysis, or the dilution water or after dilution By generating ozone by electrolysis in hypochlorous acid water, the pH is 2 to 7, and the hypochlorous acid concentration is 20 to 10.
It is characterized in that the concentration is adjusted to 0 ppm and the ozone concentration is 0.1 to 5 ppm.

The third aspect is that water to which chloride ions are added, an inorganic acid such as hydrochloric acid for adjusting the pH to a low level, and / or
Alternatively, a mixture of a pH-adjusted solution consisting of a cation-exchanged water containing cations is electrolyzed in a diaphragmless electrolyzer to produce hypochlorous acid water, and the electrolysis for producing hypochlorous acid water is performed. By generating ozone by electrolysis in water before or during electrolysis or after electrolysis, pH 2 to 7, hypochlorous acid concentration 20 to 100 ppm, ozone concentration 0.1 to 5 pp
It is characterized by adjusting to m.

The fourth aspect is that water to which chloride ions are added, an inorganic acid such as hydrochloric acid for adjusting the pH to a low level, and / or
Alternatively, a mixed solution with a pH-adjusted solution consisting of a cation-exchanged water containing cations is electrolyzed in a diaphragmless electrolytic cell to generate hypochlorous acid water, and the obtained hypochlorous acid water is then tapped. Along with diluting by mixing water such as water, before electrolysis for the generation of hypochlorous acid, water during or after electrolysis, or to the dilution water or diluted hypochlorous acid water, electrolysis By generating ozone by the method, pH 2 to 7,
Hypochlorous acid concentration 20 to 100 ppm, ozone concentration 0.1
It is characterized by adjusting to ˜5 ppm.

In a fifth aspect, purified water is electrolyzed, preferably by a solid polymer electrolyte water electrolysis method, to generate ozone in the water, and the ozone-containing water is supplied to at least the anode chamber side of the diaphragm electrolyzer. While supplying water, by adding chloride ions to at least the anode chamber side of the electrolytic cell for electrolysis, pH 2 to 7, hypochlorous acid concentration 20 to 100 ppm,
The ozone concentration is adjusted to 0.1 to 5 ppm.

In a sixth aspect, purified water is electrolyzed, preferably by a solid polymer electrolyte water electrolysis method to generate ozone in the water, and the ozone-containing water is supplied to a diaphragmless electrolytic cell. By adding chloride ions and an inorganic acid such as hydrochloric acid to the electrolytic cell for electrolysis, pH 2 to 7, hypochlorous acid concentration 20 to 100 ppm, ozone concentration 0.1 to 5 p
It is characterized by adjusting to pm.

For the above-mentioned third purpose, the electrolytic sterilizing water generator of the present invention comprises an electrolytic water conditioner having a water supply pipe on one side of the electrolytic cell and a drain pipe on the other side, and the electrolytic water conditioner. A water purifier installed in the water supply pipe of the water device, an ozone generator installed in the water supply pipe downstream of the water purifier to generate ozone in water by the electrolysis method, and a downstream of the electrolytic cell or ozone generator. And a chemical liquid tank for adding chloride ions or chloride ions and an inorganic acid such as hydrochloric acid to the water of the side water supply pipe.

The electrolytic cell used in this electrolytic sterilizing water generator may be a diaphragm type or a diaphragm type. When a diaphragm electrolyzer is used, the ozone generator is provided at least in a water supply pipe communicating with the anode chamber side of the electrolyzer, and the chemical solution tank is adapted to add chloride ions to at least the anode chamber side of the electrolyzer. Further, when the diaphragmless electrolytic cell is used, the chemical solution tank is configured such that chloride ions and an inorganic acid such as hydrochloric acid are added to the water electrolyzed in the electrolytic cell.

[0016]

EXAMPLE Electrolytic sterilized water of the present invention contains hypochlorous acid obtained by electrolyzing water containing chloride ions, ozone, and pH.
2 to 7, hypochlorous acid concentration is 20 to 100 ppm, and ozone concentration is 0.1 to 5 ppm.

Electrolyzed water having a pH of 2 to 7 obtained by electrolyzing water containing chloride ions such as sodium chloride aqueous solution becomes electrolytic sterilized water containing hypochlorous acid having a strong sterilizing power.

On the other hand, although it is known that ozone (O ₃ ) has an excellent sterilizing power, the sterilizing power of ozone is determined by the following formula: active oxygen (O) in the nascent stage generated when ozone is decomposed. Occurs by causing a strong oxidation reaction.

Embedded image Oxygen (O) in the decomposition stage generated by the above formula reacts with a reducing substance in the vicinity, that is, an organic substance such as a microorganism, to instantly decompose it, thereby exerting a bactericidal action.

Considering the oxidation and sterilization action of ozone in the liquid phase by taking the oxidation of organic matter (R) in the liquid as an example, the nascent oxygen (O) generated in the above formula 1 is By reacting, a hydroxy radical (HO) is generated.

Embedded image Next, as shown in the following formulas 3 to 6, the hydroxy radical (HO) acts as an initiator of the oxidation reaction,
It causes a chain reaction and strongly oxidizes organic substances. In addition, R represents an organic substance.

Embedded image

Embedded image

Embedded image

[Chemical 6]

The electrolytic sterilizing water of the present invention is a combination of the above-mentioned hypochlorous acid sterilizing power and ozone sterilizing power, and the pH of the sterilizing water finally produced is 2 to 7 and the hypochlorous acid concentration is 20. ~
The bactericidal power is enhanced and complemented by specifying 100 ppm and ozone concentration of 0.1 to 5 ppm.

The electrolytic sterilized water of the present invention is obtained by electrolyzing water containing chloride ions to adjust the pH value to 2 to 7,
Most of the residual free chlorine in water exists in the form of hypochlorous acid, which has the highest bactericidal activity. However, since the hypochlorous acid concentration is set to 20 to 100 ppm according to the purpose of use, there is a limit to the concentration of the bactericidal activity of hypochlorous acid. However, the electrolytic sterilization water of the present invention is 0.1
Since 5 ppm of ozone is contained, active oxygen generated when ozone is decomposed reacts with water to generate a hydroxyl radical (HO), and this hydroxyl radical (HO) acts as an initiator of the oxidation reaction, It causes a chain reaction and strongly oxidizes microorganisms (organic matter) in water.

Therefore, by combining the bactericidal power of hypochlorous acid and the bactericidal power due to ozone, the bactericidal power is enhanced above the concentration of hypochlorous acid, and the pH rises to, for example, about 7. Alternatively, even when the sterilizing power of hypochlorous acid is lowered to near pH 2 and the sterilizing power of ozone is added, the sterilizing power of electrolytic sterilizing water is complemented.

The method for producing electrolytic sterilized water according to the present invention basically comprises a step of electrolyzing water containing chloride ions to generate hypochlorous acid and a step of generating ozone in the treated water. In addition, the method of the present invention may be electrolyzed in a diaphragm electrolyzer, or electrolyzed in a non-diaphragm electrolyzer, and in each case, electrolyze mixed water of raw water and water containing chloride ions. There are cases where it is generated in a predetermined concentration of hypochlorous acid water and cases where it is adjusted to a predetermined concentration by diluting the hypochlorous acid water obtained by electrolyzing water containing chloride ions. It can be divided into each manufacturing method.

The first method is sodium chloride (NaC
l), water containing chloride ions such as potassium chloride (KCl) is electrolyzed in a diaphragm electrolyzer to produce hypochlorous acid water, and before, during or during electrolysis of hypochlorous acid water production. By generating ozone in the subsequent water by an electrolysis method, the pH is 2 to 7, and the hypochlorous acid concentration is 20 to 100.
ppm, ozone concentration is adjusted to 0.1 to 5 ppm.

The second method is to electrolyze the chloride ion-added water in a diaphragm electrolytic cell to produce hypochlorous acid water,
While diluting and mixing water such as tap water or alkaline water from the cathode chamber to the hypochlorous acid water generated from the anode chamber of the diaphragm electrolyzer, before electrolysis for the generation of hypochlorous acid,
By generating ozone by electrolysis in water during or after electrolysis, or in the water for dilution or the hypochlorous acid water after dilution, a pH of 2 to 7 and a hypochlorous acid concentration of 2 are obtained.
The amount is adjusted to 0 to 100 ppm and the ozone concentration is 0.1 to 5 ppm.

As described above, when a diaphragm electrolyzer is used, water containing ozone and chloride ions may be supplied and added to both the anode chamber side and the cathode chamber side of the electrolyzer, but it is preferable. Ozone-containing water and chloride ions are put in the anode chamber side of the electrolytic cell, and ordinary water (raw water) such as tap water is put in the cathode chamber for electrolysis. It is more convenient to use water softened through a water softener as water to be supplied to the electrolyzer, particularly water to be supplied to the cathode chamber, because precipitation of calcium during electrolysis is prevented.

The third method is a pH-adjusting solution comprising a solution obtained by cation exchange of water containing the chloride ion and water containing an inorganic acid such as hydrochloric acid for adjusting the pH and / or a cation. With a mixed solution with, to generate hypochlorous acid water by electrolyzing in a diaphragmless electrolytic cell, before electrolysis of the hypochlorous acid water generation, during or after electrolysis, ozone by electrolysis method By generating, pH 2-7,
Hypochlorous acid concentration 20 to 100 ppm, ozone concentration 0.1
It is adjusted to ˜5 ppm.

Furthermore, the fourth method is a pH comprising a solution obtained by cation exchange of water containing the chloride ion and water containing an inorganic acid such as hydrochloric acid for adjusting the pH and / or a cation. The mixed solution with the adjusted solution is electrolyzed in a diaphragmless electrolytic cell to generate hypochlorous acid water, and the obtained hypochlorous acid water is diluted by mixing water such as tap water with the hypochlorous acid. Before electrolysis for generating chloric acid, during or after electrolysis, or by diluting water or diluted hypochlorous acid water, ozone is generated by an electrolysis method to obtain pH 2 to 7, Chloric acid concentration 20-100ppm,
The ozone concentration is adjusted to 0.1 to 5 ppm.

In the fifth method, purified water is electrolyzed by an electrolysis method, preferably a solid polymer electrolyte water electrolysis method to generate ozone in the water, and the ozone-containing water is supplied to at least a diaphragm electrolyzer. While supplying water to the anode chamber side and adding chloride ions to at least the anode chamber side of the electrolysis cell for electrolysis, pH 2 to 7, hypochlorous acid concentration 20 to
The concentration is adjusted to 100 ppm and the ozone concentration is 0.1 to 5 ppm.

Further, the sixth method is to electrolyze deionized water by an electrolysis method, preferably a solid polymer electrolyte water electrolysis method to generate ozone in water, and the ozone-containing water is used in a diaphragmless electrolytic cell. PH of 2 to 7, hypochlorous acid concentration of 20 to 100 ppm, by adding chloride ions and an inorganic acid such as hydrochloric acid to the electrolytic cell for electrolysis,
The ozone concentration is adjusted to 0.1 to 5 ppm.

In the above method of the present invention, both hypochlorous acid and ozone are produced by electrolysis of water, so that the manufacturing process is simplified. Moreover, ozone has the property that the more acidic it is, the more its dissolved stability in water increases.

As described above, when ozone-generated water is electrolyzed together with chloride ions, hypochlorous acid is generated and chlorine dioxide and other by-products are generated. Since this chlorine dioxide has a sterilizing action, the sterilizing effect of sterilizing water is further improved.

It is relatively easy to control the pH of the hypochlorous acid water generated in the anode chamber to 2 to 7 by the diaphragm electrolysis in which the electrodes of the electrolytic cell are partitioned by the electrolysis diaphragm for electrolysis. ,
In diaphragmless electrolysis in which electrolysis is performed without partitioning the electrodes with an electrolytic diaphragm, it may be difficult to control the pH value of the electrolytic water of chloride-containing water to a low level of 2 to 7. Therefore, as described above, particularly in the case of producing by diaphragmless electrolysis, the pH of hypochlorous acid water obtained by electrolyzing chloride ion-containing water is kept low, and In order to adjust the pH of the sterilized water to 2 to 7, an inorganic acid such as hydrochloric acid is added as a pH adjusting solution to the chloride ion-containing water, or the cation-containing water is cation-exchanged ( Hydrogen ion substitution) is added. Of course, both the inorganic acid and the cation exchange liquid may be added as the pH adjusting solution. Examples of the additive chemical liquid that imparts cations for adjusting the pH to a low level include calcium chloride (CaC).
l ₂ ), calcium sulfate (CaSO ₄ ) and the like.

Examples of chloride salts for imparting chloride ions include sodium chloride and potassium chloride.

In the method of the present invention, a polysilicate and / or a silicate may be further added to the chemical liquid added to the water in the electrolytic cell. By adding these polysilicic acids and silicates to the additive chemical, the advantage that the hypochlorous acid water is unlikely to rust is obtained.

When the above polysilicate and silicate are sodium salts, the chloride salt to be added is preferably potassium chloride. This is because if sodium chloride is used, the concentration of sodium becomes too high and it becomes difficult to dissolve it.

Next, an apparatus for producing ozone-containing electrolyzed hypochlorous acid sterilized water according to the present invention will be described with reference to the drawings. This device basically uses an electrolytic water conditioning system for water.
Some use a diaphragm electrolyzer and others use a non-diaphragm electrolyzer 1'as shown in FIG. Both are electrolyzer 1
The water supply pipe 2 is provided with a deionizer 3 and an ozone generator 4 to supply the ozone-generated water in the water to the diaphragm electrolysis tank 1 or the non-diaphragm electrolysis tank 1 ′. Is a chemical solution tank 5 for supplying a chemical solution necessary for generating hypochlorous acid to the water in the diaphragm electrolyzer 1, and in the apparatus of FIG. A chemical liquid tank 5 for supplying a chemical liquid necessary for generating hypochlorous acid and a chemical liquid for acidification is provided.

FIG. 1 exemplifies an apparatus using a diaphragm electrolysis cell 1. In the electrolysis cell 1, a space between a negative electrode 6 and a positive electrode 7 is partitioned by an electrolysis diaphragm 8 into a cathode chamber 10 and an anode chamber 9. The electrolytically treated water generated in the anode chamber 9 is discharged from the sterilizing water intake 13 from the drain pipe 11, and the electrolytically treated water generated in the cathode chamber 10 is discharged from the drain pipe 12 to the drain 14. ing.

The chemical liquid tank 5 of FIG. 1 contains chloride salts such as sodium chloride and potassium chloride for producing hypochlorous acid, and chloride ions are added to the water in the water supply pipe on the downstream side of the ozone generator 4. Is to be added. The above-mentioned water and chloride salt containing ozone are used in the cathode chamber 1 of the electrolytic cell 1.
Water may be supplied to both 0 and the anode chamber 9, but preferably,
Water is supplied to the anode chamber 9 side, and raw water such as tap water is supplied to the cathode chamber 10. For this reason, in the embodiment of FIG. 1, the water supply pipe 2 is branched into the water supply branch pipes 2a and 2b of two limbs, and one of them is used as the anode chamber 9.
Water supply branch pipe 2 that connects the other to the cathode chamber 10 and communicates with the anode chamber 9
A water purifier 3 and an ozone generator 4 are provided in a.

The ozone generator 4 is formed by an electrolysis method.
A device for generating ozone in water is used, and an ozone generator based on the solid polymer electrolyte water electrolysis method is particularly suitable. That is, in this ozone generator 4,
An ozone generation cell is used in which an anode and a cathode are arranged on the front and back of an ion exchange membrane, and an electric current is passed between the electrodes in pure water to generate ozone on the anode side. In addition, pure water device 3
Is used to obtain pure water necessary for generating ozone in the ozone generator 4, and is disposed upstream of the ozone generator 4.

Thus, in the apparatus shown in FIG. 1, part of the water supplied from the water supply pipe 2 is supplied to the cathode chamber 10 of the electrolytic cell 1, and part of the supply water is purified by the deionizer 3. After that, ozone is contained in the water by the ozone generator 4, and chloride ions from the chemical liquid tank 5 are added to the ozone-containing water to supply water to the anode chamber 9 of the electrolytic cell 1. In this way, by electrolyzing the water containing chloride ions in the ozone-containing water in the diaphragm electrolyzer 1, the pH of the anode chamber 9 of the electrolyzer 1 is 2 to 7, and the hypochlorous acid concentration is 20.
.About.100 ppm, ozone concentration of 0.1 to 5 ppm, that is, electrolytic sterilizing water having both sterilizing power by hypochlorous acid and sterilizing power of ozone is generated.

FIG. 2 shows an apparatus using a non-diaphragm electrolytic cell 1'without an electrolytic diaphragm, which is the electrolytic cell 1
A pure water device 3 and an ozone generator 4 similar to the above are interposed in a water supply pipe 2 connected to ′ ′ so that the total amount of pure water contains ozone to supply water to the diaphragmless electrolytic cell 1 ′. Chloride ions are added to the diaphragmless electrolyzer 1'from the chemical solution tank 5 as in FIG. 1, but when water containing chloride ions is electrolyzed in the diaphragmless electrolyzer 1 ', the pH value increases, Since it is difficult to maintain the pH of 2 to 7 required to generate chloric acid,
In addition to the above chloride salt, an inorganic acid such as hydrochloric acid is added to the chemical solution tank 5 of FIG. 2 so that the pH value of the electrolytically treated water is adjusted to pH 2 to 7 by neutralization with the inorganic acid. Thus, in the apparatus shown in FIG. 2, the entire amount of the feed water is discharged as ozone-containing electrolytic hypochlorous acid sterilizing water as in the above.

In order to prevent the hypochlorous acid water produced from the electrolytic cell from rusting easily, the apparatus shown in FIGS. 1 and 2 uses the chemical solution in the chemical solution tank 5 and further polysilicate and / or silicic acid. It is preferable to add salt.

Further, in the apparatus shown in FIGS. 1 and 2, in order to adjust the pH value, ozone concentration and hypochlorous concentration within the above range by diluting the produced sterilized water with raw water, the water supply pipe 2 is used. The dilution water pipe line 16 may be connected to the drainage pipes 11 and 15 of the electrolytic sterilizing water via the branch plug 20.

In order to prevent precipitation of calcium during electrolysis, it is preferable that the water softener 17 be provided in the water supply pipe 2 as shown in the figure.
You may make it soften the whole amount of water supply.

A constant flow rate device 19 such as a metering pump or a metering valve having a variable flow rate is provided in the water supply pipe 2 and the drug solution supply pipe 18 of the drug solution tank 5 so that the drug solution is added at a desired flow rate ratio. Is desirable.

Electrolyzers 1 and 1 used in the apparatus of the present invention
′ May be a continuous water flow type or a batch type.

PH of the sterilized water in the present invention is 2 to 7, hypochlorous acid concentration is 20 to 100 ppm, ozone concentration is 0.1 to 5
The specification of ppm is for electrolytic sterilized water as a product.

[0049]

[Effect] The electrolytic sterilizing water of the present invention has enhanced bactericidal activity due to the combination of the bactericidal activity of hypochlorous acid and ozone, and the bactericidal activity of the bactericidal water due to hypochlorous acid is decreased due to pH change. In this case also, the presence of ozone complements the bactericidal power.

Since a sterilizing power higher than the concentration of hypochlorous acid can be obtained, it is particularly useful as sterilizing water when the concentration of hypochlorous acid is suppressed and a strong sterilizing power is required.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of an apparatus for producing electrolytic sterilized water according to the present invention.

FIG. 2 is a schematic configuration diagram showing another embodiment of the apparatus for producing electrolytic sterilized water according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Diaphragm electrolysis tank 1 '... Diaphragm electrolysis tank 2 ... Water supply pipe 2a, 2b ... Water supply branch pipe 3 ... Pure water device 4 ... Ozone generator 5 ... Chemical liquid tank 6 ... Cathode electrode 7 ... Positive electrode 8 ... Electrolysis diaphragm 9 ... Anode chamber 10 ... Cathode chamber 11, 12, 15 ... Drainage pipe 13 ... Sterilizing water intake 14 ... Drain 16 ... Diluting water piping 17 ... Water softener 18 ... Chemical solution supply pipe 19 ... Constant flow device 20 ... Branch plug

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location C02F 1/50 560 C02F 1/50 560F 1/78 1/78

Claims (9)

[Claims] 1. A hypochlorous acid obtained by electrolyzing water containing chloride ions, and ozone, having a pH of 2 to 7, a hypochlorous acid concentration of 20 to 100 ppm, and an ozone concentration of 0.1 to 5 pp.
m electrolyzed water 2. Water containing chloride ions is electrolyzed in a diaphragm electrolyzer to produce hypochlorous acid water, and water before or during electrolysis for the production of hypochlorous acid water is added to water. By generating ozone by electrolysis, pH 2-7,
Hypochlorous acid concentration 20 to 100 ppm, ozone concentration 0.1
To 5 ppm, a method for producing electrolytic sterilized water, characterized in that 3. Water containing chloride ions is electrolyzed in a diaphragm electrolyzer to produce hypochlorous acid water, and hypochlorous acid water produced from the anode chamber of the diaphragm electrolyzer is tap water or the like. Of water or alkaline water from the cathode chamber is mixed and diluted,
Before the electrolysis for the generation of hypochlorous acid, during or after the electrolysis, or by diluting the water or the hypochlorous acid water after dilution, by generating ozone by electrolysis, pH 2 ~ 7 , Hypochlorous acid concentration 20 to 100 ppm,
Method for producing electrolytic sterilized water, characterized by adjusting ozone concentration to 0.1 to 5 ppm 4. A mixed solution of water to which chloride ions are added and a pH adjusting solution comprising a solution in which water containing an inorganic acid such as hydrochloric acid and / or cations is cation-exchanged to adjust the pH to a low level. The electrolysis in a non-diaphragm electrolyzer to produce hypochlorous acid water, before electrolysis of the hypochlorous acid water production, during or after electrolysis, by generating ozone by electrolysis by , PH 2-7, hypochlorous acid concentration 2
Method for producing electrolytic sterilized water, characterized by adjusting to 0 to 100 ppm and ozone concentration of 0.1 to 5 ppm 5. A mixed solution of water to which chloride ions are added and a pH adjusting solution comprising a solution in which water containing an inorganic acid such as hydrochloric acid and / or cations for adjusting the pH to a low level is cation-exchanged. , Electrolysis in a non-diaphragm electrolyzer to produce hypochlorous acid water, while diluting the resulting hypochlorous acid water by mixing water such as tap water, the electrolysis for the hypochlorous acid generation By generating ozone by electrolysis in the water before or during the electrolysis or after the electrolysis, or the dilution water or the diluted hypochlorous acid water, pH 2 to 7, hypochlorous acid concentration 20 to 100 ppm, Method for producing electrolytic sterilized water, characterized by adjusting ozone concentration to 0.1 to 5 ppm 6. Pure water is electrolyzed by a solid polymer electrolyte water electrolysis method to generate ozone in the water, and the ozone-containing water is supplied to at least the anode chamber side of the diaphragm electrolysis cell, and the electrolysis cell is also provided. By adding chloride ions to at least the anode chamber side for electrolysis, the pH is 2 to 7, the hypochlorous acid concentration is 20 to 100 ppm, and the ozone concentration is 0.1 to 5 pp.
Method for producing electrolytic sterilized water characterized by adjusting to m 7. The purified water is electrolyzed by a solid polymer electrolyte water electrolysis method to generate ozone in the water, and the ozone-containing water is supplied to a diaphragmless electrolytic cell, and chloride ion is added to the electrolytic cell. By adding an inorganic acid such as hydrochloric acid and electrolyzing, pH 2 to 7, hypochlorous acid concentration 20 to 100 pp
m, ozone concentration is adjusted to 0.1 to 5 ppm, a method for producing electrolytic sterilizing water, characterized in that 8. An electrolytic water conditioner having a water supply pipe on one side of the electrolysis tank and a drain pipe on the other side, a deionizer interposed in the water supply pipe of the electrolytic water conditioner, and pure water. Generator installed in the water supply pipe on the downstream side of the reactor to generate ozone in water by electrolysis, and chloride ion or chloride in the water supply pipe of the electrolytic cell or the water supply pipe of the ozone generator Electrolytic sterilizing water generator equipped with a chemical liquid tank for adding ions and inorganic acid such as hydrochloric acid 9. The electrolytic cell of the electrolytic water conditioning apparatus is a diaphragm electrolytic cell, an ozone generator is provided in a water supply pipe communicating with at least the anode chamber side of the electrolytic cell, and the chemical liquid tank is an electrolytic cell. 9. The electrolytic sterilized water generator according to claim 8, which is a tank for adding chloride ions to the water of the water supply pipe of the above or the water supply pipe on the downstream side of the ozone generator.