JP2792537B2 - Method for producing electrolytic ionic water - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing electrolytic ionic water.

Incidentally, acidic oxidized water, which is one of the electrolytic ionic waters obtained in the present invention, is a microorganism (bacteria, virus, etc.).
Is effective in preventing the killing and propagation of water, removing organic matter, and preventing metal adhesion when used as washing water, while alkaline reduced water is effective in preventing oxidation and removing fine particles such as oils and fats and proteins. . Further, the acidic reduced water and alkaline oxidized water obtained by this method can be used as washing water for metals and the like.

[0003]

2. Description of the Related Art There is a manufacturing method proposed by the inventors and applied for a patent (Japanese Patent Application No. 160308/1995). This method uses a cation exchange resin membrane as a solid polymer electrode membrane. A polymer electrolyte electrode bath was used.

[0004]

The method proposed by the present inventors is a method for obtaining electrolytic ionic water using a solid polymer electrolyte electrode tank using a cation exchange resin membrane as the solid polymer electrode membrane. , Redox potential at the anode (ORP)
Was less to a lesser extent than the decrease in ORP at the cathode.

[0005]

According to the present invention, raw water is passed through an H-type cation exchange resin tank or an OH-type anion exchange resin tank, and the primary treated water is passed through a solid polymer electrode membrane to form an anion exchange resin membrane. The anode and cathode of the used solid polymer electrolyte electrode tank are brought into contact with each other, and a separate aqueous system is brought into contact with each counter electrode and energized to obtain acidic oxidized water, acidic reduced water, alkaline oxidized water, alkaline reduced water. Is a way to get

In the present invention, unlike the conventional method, an OH-type anion exchange resin membrane is used for the solid polymer electrode membrane, and OH ions in the membrane are moved to the anode side to discharge and generate oxygen. However, when water on the cathode side contains chloride ions (Cl ~), Cl ~ partially moves in the anion exchange resin membrane and generates chlorine on the anode side, so this method further increases the ORP of water. It is based on the idea that it may be done.

[0007] Further, the raw water is divided into two and passed separately through an H-type cation exchange resin tank and an OH-type anion exchange resin tank, and the primary treated water passed through the H-type cation exchange resin tank is applied to a solid polymer electrode membrane. The primary treated water passed through the OH type anion exchange resin tank was brought into contact with the anode side of the solid polymer electrolyte electrode tank during energization using an anion exchange resin membrane, and the anion exchange resin membrane was applied to the solid polymer electrode membrane. The first treated water passed through the H-type cation exchange resin tank was used as the solid polymer electrode membrane by using the anion exchange resin membrane by bringing the solid polymer electrolyte electrode tank into contact with the cathode side of the used solid polymer electrolyte electrode tank. Contacting the cathode side of the current-carrying solid polymer electrolyte electrode tank, the primary treated water passed through the OH-type anion-exchange resin tank is used as the solid polymer electrode membrane. On the anode side of the electrolyte electrode tank By giving tactile, obtained efficiently acidic oxide water and alkaline reduced water or is to to obtain efficiently the acidic reducing water and an alkaline acidic water.

In the present invention, when water containing salts such as sodium chloride is passed as raw water through an H-type cation exchange resin tank, for example, in the case of sodium chloride as an example, the following reaction occurs in the tank. Here, R represents a base of the ion exchange resin.

[0009]

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Similarly, in the OH type anion exchange resin tank, the following reaction occurs.

[0011]

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For example, a specific resistance of 1,000,000 Ω · cm (at2
5 ° C) pure water contains only NaCl,
Specific resistance 1 million Ω · cm, that is, electric conductivity 1 μS / c
m, the concentration of NaCl contained in NaCl 1 mg (as
The electrical conductivity of CaCO ₃ ) / l is 2.53 μS / cm
(At 25 ° C.), about 40
0 μg / l (as CaCO ₃ ).

[0013]

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Therefore, this specific resistance of 1,000,000 Ω · cm (a
(t25 ° C.) pure water as raw water and passed through an H-type cation exchange resin tank, the NaCl in the treated water becomes 400
It will be μg / l (as CaCO ₃ ) HCl and the calculated pH will be about 5.1. In the case of pure water and fresh water having a lower specific resistance than this, since more salts are contained, the amount of acid generated by passing through the H-type cation exchange resin tank also increases, and the pH becomes higher than 5.1. Is also on the acidic side.

Further, 10 million Ω ·
When pure water of cm (at 25 ° C.) is passed through an OH type anion exchange resin tank as raw water, 40 μg / l (a
sCaCO ₃ ) from NaCl by the formula: 40 μg / l
(As CaCO ₃ ) to yield NaOH, calculated pH
Is about 7.9. From this, when the concentration of NaCl is high, the amount of alkali generated by passing through the OH type anion exchange resin tank also increases, and the pH becomes more alkaline than 7.9.

Here, by adding salts such as NaCl to the raw water and changing the amount of addition, when water is passed through the H-type cation exchange resin tank, the amount of exchanged HCl changes, and the OH-type anion is changed. When water is passed through the exchange resin tank, the amount of NaOH to be exchanged changes, so that the pH value of the resulting treated water can be arbitrarily changed.

When water passed through the H-type cation exchange resin tank is brought into contact with the anode side of the energized solid polymer electrolyte electrode tank using the OH-type anion exchange resin membrane as the solid polymer electrode membrane, Now, the O that has moved through the anion exchange resin membrane
The reaction of the formula is carried out by H ~ ions to generate oxygen, and the anode-side treated water exhibits strong oxidizing properties. Further, HCl exchanged in the H-type cation exchange resin tank remains in the anode-side treated water, and as a result, the anode-side treated water becomes acidic oxidized water.

If Cl】 ions are present in the water on the cathode side, they also move to the anode side through the anion exchange resin membrane, and the chlorine is generated by the reaction of the formula at the anode. This results in the generation of hypochlorous acid, which enhances the oxidizability of the anode-side treated water.

[0019]

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[0020]

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Similarly, when the water passed through the OH type anion exchange resin tank is brought into contact with the cathode side of the energized solid polymer electrolyte electrode tank using the OH type anion exchange resin membrane as the solid polymer electrode membrane. On the cathode side, water is electrolyzed to generate hydrogen as shown in the formula, and the cathode side shows strong reducing properties. Also, the N exchanged in the OH type anion exchange resin tank
Since aOH remains in the treated water on the cathode side, the treated water on the cathode side becomes alkaline reduced water as a result.

[0022]

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Next, when the water passed through the H-type cation exchange resin tank is brought into contact with the cathode side of the energized solid polymer electrolyte electrode tank using the OH anion exchange resin membrane as the solid polymer electrode membrane, On the cathode side, water is electrolyzed to generate hydrogen as in the formula, and the cathode side shows strong reducing properties. Further, HCl exchanged in the H-type cation exchange resin tank remains in the treated water on the cathode side (part of ClＣｌ ions move to the anode side), and consequently the treated water on the cathode side is acidic reduced water. Becomes

Similarly, when water passed through the OH type anion exchange resin tank is brought into contact with the anode side of the energized solid polymer electrolyte electrode tank using the OH type anion exchange resin membrane as the solid polymer electrode membrane. On the anode side, the reaction of the formula is performed, and the anode-side treated water that has generated oxygen exhibits strong oxidizing properties.
NaOH exchanged in the OH type anion exchange resin tank
Remains in the anode-side treated water, and as a result, the anode-side treated water becomes alkaline oxidized water. At this time, if the water on the cathode side has Cl ions, a part of the Cl ions move in the anion exchange resin membrane and react as shown by the formula at the anode to generate chlorine. Reduce alkali content.

[0025]

1 shows an example of an apparatus to which the method for producing electrolytic ionic water according to the present invention is applied. FIG. 1 is a schematic illustration showing an example of a first apparatus, and FIG. 2 is an illustration showing an example of a second apparatus. FIG.

In each apparatus example, 2 is an apparatus for injecting salts such as NaC, 6 is an H-type cation exchange resin tank, 10 is an OH-type anion exchange resin tank, 12 is a solid polymer electrolyte electrode tank,
Numeral 6 denotes a DC power supply unit. The salt injection device 2 is used for changing the pH value of the electrolytic ionized water to a desired value by injecting and mixing a calculated amount of salt into raw water.
And the like are added and mixed into raw water from the apparatus 2 through an injection valve 3 whose addition amount is set.

The H-type cation exchange resin tank 6 is provided with an H-type cation exchange resin 7, is provided with an injection valve 4 and an air release valve 5 in an upper part of the tank, receives and processes raw water through the injection valve 4, and processes the raw water from the lower part of the tank. The treated water is discharged outside the tank.

The OH type anion exchange resin tank 10 is provided with an OH type anion exchange resin 11, and is provided with an injection valve 8 and an air release valve 9 at the upper part of the tank similarly to the H type cation exchange resin tank 6. Raw water is received and treated, and treated water is discharged out of the tank from the lower part of the tank.

The solid polymer electrolyte electrode tank 12 is made of an OH type anion exchange resin membrane (trade name: Tosflex IE-D).
F34) is divided into an anode side and a cathode side by the solid polymer electrode membrane 21 using the solid polymer electrolyte membrane 21 using the OH type anion exchange resin membrane, and the anode 17 and the cathode 18 are used as the solid polymer electrolyte electrode. And the anode 17
Is adjacent to an anode-side power supply 19 having a porosity or gap through which a liquid can pass, and the cathode 18 is adjacent to a similar cathode-side power supply 20. Outside the anode-side inlet path 15, the anode-side injection valve 13 and the anode-side discharge valve 27 outside the anode-side outlet path 22, and outside the cathode-side inlet path 16, the cathode-side injection valve 14 and the cathode side A cathode discharge valve 28 is arranged outside the outlet path 23.

The anode-side power supply 19 is connected to the anode plate 24.
The cathode-side power supply 20 is electrically connected to the DC power supply unit 26 via the cathode plate 25.

In the first device example shown in FIG. 1, the raw water is H
Type cation exchange resin tank 6 and OH type anion exchange resin tank 1
0, one side flows, and one side passes through the H-type cation exchange resin (trade name: Diaion SKN1) 7 in the H-type cation exchange resin tank 6 to become acidic primary treatment water. Through the anode-side power supply 19 having a porosity or a gap through which the liquid can pass, and from the anode-side outlet path 22 through the anode-side discharge valve 27, and as acidic oxidized water. Collected.

The other one of the raw water branched before the H-type cation exchange resin tank 6 and the OH-type anion exchange resin tank 10 is used as the OH-type anion exchange resin (OH) in the OH-type anion exchange resin tank 10. Product name: Diaion SAN1), which becomes alkaline primary treated water after passing through the cathode-side injection valve 14 through the cathode-side inlet path 16 and has a porous or gap-type cathode-side power supply 2 through which liquid can flow.
0, and is recovered as alkaline reduced water from the cathode-side outlet path 23 through the cathode-side discharge valve 28.

In the second apparatus example shown in FIG. 2, the raw water is H
Type cation exchange resin tank 6 and OH type anion exchange resin tank 1
0, and one of them flows through the OH-type anion-exchange resin 11 in the OH-type anion-exchange resin tank 10 to become alkaline primary treated water.
Through the anode-side power supply 19 having a porosity or gap through which liquid can pass, and from the anode-side outlet path 22 through the anode-side discharge valve 27, and as alkaline oxidized water. Collected.

The other of the raw water branched before the H-type cation exchange resin tank 6 and the OH-type anion exchange resin tank 10 is used as the H-type cation exchange resin 7 in the H-type cation exchange resin tank 6. Through the cathode-side injection valve 14 to the cathode-side inlet path 16, and through the cathode-side power feeder 20 having a porosity or gap through which liquid can flow, and passing through the cathode-side outlet path. Through the cathode-side discharge valve 28, the water is recovered as acidic reduced water.

In the first device example and the second device example, in the case of raw water containing a hardness component, calcium hydroxide Ca (OH
₂ ) and magnesium hydroxide Mg (OH ₂ ) precipitates and blocks the resin layer, causing obstacles. Therefore, a separate Na type cation exchange resin tank is provided before the OH type anion exchange resin tank to It is desirable that the water is treated in the resin tank to make the water soft and then passed through the OH type anion exchange resin tank.

In the first device example and the second device example, the polarity of each solid polymer electrolyte electrode is converted to obtain the first device example and the second device example. Can obtain the same results as in the first device example.

It should be noted that H-type cation exchange resin search and OH
Primary treatment water is obtained by omitting one of the mold anion exchange resin tanks, and the primary treatment water is brought into contact with one of the anode and the cathode of the electrode tank, and another water system is brought into contact with the other. To obtain electrolytic ionic water.

An embodiment of the present invention applied to the above apparatus will be described below.

[0039]

EXAMPLE 1 In the apparatus shown in FIG. 1, the area of each of an anode 17 and a cathode 18 which were platinum-plated on a titanium net was 250 cm ^2, and the electric conductivity was about 1.0 μS as raw water.
/ Cm (at 25 ° C.) pure water is used without injecting the chemical as it is, and it is divided into two parts. One part is passed through the H-type cation exchange resin tank 6 at 100 liters per hour, and the solid polymer electrolyte electrode tank 12 To the anode-side power supply 19 of the above. The other was also passed through the OH type anion exchange resin tank 10 at an hourly rate of 100 liters and supplied to the cathode-side power supply 20 of the solid polymer electrolyte electrode tank 12. The water pressure in the solid polymer electrolyte electrode tank was adjusted to about 0.18 MPa in order to improve the dissolution of the generated hydrogen gas in raw water, and a current of 9.5 volts and 5 amps was passed between the electrodes. Table 1 shows the results.

[0040]

EXAMPLE 2 In the apparatus shown in FIG. 2, 3.6 mg (as CaCO ₃ ) / l of sodium chloride was injected into pure water having an electric conductivity of about 1.0 μS / cm (at 25 ° C.) as raw water to obtain an electric conductivity. The one adjusted to about 10 μS / cm (at 25 ° C.) was used. This adjusted raw water is divided into two parts, one of which is an OH type anion exchange resin tank 1 at 100 liters per hour.
0, and supplied to the anode-side power supply 19 of the solid polymer electrolyte electrode tank 12. The other was also passed through the H-type cation exchange resin tank 6 at an hourly rate of 100 liters, and supplied to the cathode-side power supply 20 of the solid polymer electrolyte electrode tank 12. The water pressure in the solid polymer electrolyte electrode tank was adjusted to about 0.18 MPa in order to improve the dissolution of generated hydrogen gas in raw water, and a current of 3 amps was applied between the electrodes at 10 volts. Other conditions are the same as in the first embodiment. Table 1 shows the results.

[0041]

[Table 1]

[0042]

According to the present invention, acidic oxidized water and alkaline oxidized water having a high ORP value can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view of a first embodiment.

FIG. 2 is a schematic explanatory view of a second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Raw water inlet 2 NaCl etc. salt injection apparatus 3 Injection valve 4 Injection valve 5 Air release valve 6 H type cation exchange resin tank 7 H type cation exchange resin 8 Injection valve 9 Air release valve 10 OH type anion exchange resin tank 11 OH Type anion exchange resin 12 Solid polymer electrolyte electrode tank 13 Anode side injection valve 14 Cathode side injection valve 15 Anode side inlet path 16 Cathode side inlet path 17 Anode 18 Cathode 19 Anode side power supply 20 Cathode side power supply 21 Solid polymer Electrode membrane 22 Anode-side exit path 23 Cathode-side exit path 24 Anode plate 15 Cathode plate 26 DC power supply 27 Anode discharge valve 28 Cathode discharge valve

Continuation of the front page (56) References JP-A-5-68975 (JP, A) JP-A-7-214063 (JP, A) JP-B-6-33474 (JP, B2) Patent 2732818 (JP, B2) ( 58) Field surveyed (Int.Cl. ⁶ , DB name) C02F 1/46-1/48 C25B 11/20

Claims (3)

(57) [Claims] 1. The raw water is supplied to an H-type cation exchange resin tank or an O-type cation exchange resin tank.
An acidic primary treatment water or an alkaline primary treatment water is obtained by passing through an H-type anion exchange resin tank, and the anode and the cathode of the energized solid polymer electrolyte electrode tank using an anion exchange resin membrane as the solid polymer electrode membrane A method for producing electrolytic ionic water, comprising obtaining the primary treated water on one side and another aqueous system on the other side. 2. Raw water is supplied to an H-type cation exchange resin tank and OH
Separately pass through the type anion exchange resin tank to obtain acidic primary treatment water and alkaline primary treatment water, and use the anion exchange resin membrane as the solid polymer electrode membrane to conduct the anode and cathode of the energized solid polymer electrolyte electrode tank A method for producing electrolytic ionic water, characterized by contacting one of the acidic primary treated water and the other with the alkaline primary treated water. 3. The method for producing electrolytic ionic water according to claim 1, wherein a calculated amount of salts such as sodium chloride is previously mixed with the raw water.