JP2003516216A - High concentration electrolyzed water production equipment - Google Patents

Abstract

(57) [Summary] An apparatus for producing highly concentrated electrolyzed water is provided. By forming a pair of counter electrodes using a platinum (Pt) alloy containing palladium (Pd), the life of the electrodes can be extended. By forming a slit in the counter electrode to increase the efficiency of the device and generate highly concentrated electrolyzed water, the water flow velocity and the space charge effect are reduced. The application of the square-wave pulse voltage promotes the electrophysicochemical reaction and the electrolytic action. By alternating the polarity of the applied pulse voltage, it is possible to prevent impurities from being attached to the electrodes. By adding salt to tap water, strongly alkaline water and strongly acidic water can be obtained. Further, neutral water is obtained by removing the separation membrane, and the hydrogen ion concentration (pH) can be adjusted.

Description

Detailed Description of the Invention

[0001]

【Technical field】

According to the present invention, opposite electrodes are installed opposite to each other on the left and right sides of a separation membrane provided in water, and the material of the opposite electrodes is made of a platinum alloy containing palladium, so that the consumption of the electrodes hardly occurs in the water. By doing so, the present invention relates to an apparatus for producing high-concentration electrolyzed water in which the life of the electrode is greatly extended. The present invention also reduces the velocity of the water flow and the space charge effect by providing a slit in the counter electrode, or by providing an additional counter electrode inside or outside the counter electrode, thereby reducing the gap between the electrodes. The present invention relates to a low power consumption, high efficiency and high concentration electrolyzed water producing apparatus. In addition, a predetermined pulse voltage is applied to this counter electrode to cause an effective high-voltage discharge and electrolytic action in water, and high-concentration electrolyzed water and high-concentration water containing high-concentration ions and a strong oxidizer in water are generated. It relates to a device to be manufactured.

[0002]

[Background technology]

A general method of generating electrolyzed water is to provide a separation membrane in water, and provide a titanium (Ti) plate plated with platinum (Pt) or a flat plate-shaped counter electrode made of a ferrite material on the left and right sides of the separation membrane. In this method, a direct current (DC) voltage is applied between the electrodes to generate acidic water and alkaline water at the outlet. However, in this case, the service life of the electrode was short, a sufficiently high voltage could not be applied, and the efficiency was not high, so that a high concentration of acidic water or alkaline water could not be obtained.

The above-mentioned method of generating electrolyzed water is carried out in water by using cations such as metal mineral ions containing Ca ⁺⁺ , Fe ⁺⁺ , Mg ⁺⁺ , Cu ⁺⁺ , or Cl ⁻ , SiO ₂ ^— , SO. ₃ ^- not only generate the anion, such as, O, O _3, from H ₂ O _2, to generate a strong oxidizing substance such as HClO, be a highly effective and economical techniques , Sterilization and disinfection, deodorization, decolorization, strong oxidization, water and sewage treatment, food storage and sterilization treatment, agricultural products and fish sterilization treatment, industrial wastewater treatment, odor and volatile organic substances (VOCs) treatment, pesticide It can be used as a substitute, and as a sterilizing treatment during the manufacturing process of medicines and foods, and as a result, for sterilizing and washing doctor's hands, medical instruments such as knives and scissors, and sterilizing and disinfecting medical devices such as gastrointestinal endoscopes. Can be applied in various fields It is surgery.

Among the usual techniques for applying to various fields, the method of mixing air ozone generated by electric discharge into water requires the use of a spreader and a blower. There are technical and expensive economic problems such as poor spray efficiency, ozone leakage, system blockage, and noise.

FIG. 1 is a diagram showing a conventional electrolyzed water producing apparatus (I) having a relatively low output electrolysis concentration. A water supply pipe 4 and electrolyzed water drainage pipes 6 and 8 are connected to an insulating case 9, and flat plates are arranged inside the insulating case 9 so as to face each other in parallel with each other with a proper distance from the separation film 2 at the center. Electrodes 1 and 3 are installed. When the supply water supplied through the water supply pipe 4 passes between the flat plate electrodes 1 and 3, it is electrolyzed by the applied DC voltage (Vdc) to generate acidic water and alkaline water, respectively, and the drain pipe 6 and The electrolyzed water is discharged through 8.

In the above-described conventional electrolyzed water producing apparatus (I), since the direct current voltage (Vdc) as shown in FIG. 2 is applied to the flat plate electrodes 1 and 3, the supplied water is electrolyzed to generate an extremely weak acidity. Water and alkaline water are generated from each of the two plate electrodes 1 and 3, and the distance between the plate electrodes 1 and 3 is as small as possible.
) Is very narrow, ie 0.01 to 2 mm.

Since the conventional electrolyzed water producing apparatus (I) cannot apply a high DC voltage, the electrolyzed water generating capacity is relatively low, and even if the applied DC voltage is increased by relatively reducing the water supply amount, Many ions and strong oxidative substances cannot be generated, and a large amount of current flows in a narrow space between the flat plate electrodes 1 and 3, so that a large amount of heat proportional to the square of the current (Joule heat due to the current) Is generated, and the thermal decomposition of the strongly oxidizing substance is promoted as shown in the following reaction formula 1. Therefore, the oxidant concentration of the discharged electrolyzed water could not be significantly increased. [Reaction Formula 1] 2O ₃ → 3O ₂ ---- (1) 4HClO → 2H ₂ O ₂ + 2Cl ₂ ---- (2) 2H ₂ O ₂ → 2H ₂ O + O ₂ ---- (3)

[0008] Furthermore, since ferrite, high-purity platinum (Pt), or titanium (Ti) vapor-deposited with platinum (Pt) is used as the electrode material of the electrolyzed water manufacturing apparatus, a medium-sized product to which a high DC voltage is applied Alternatively, the life of the electrode was short in a large-sized electrolyzed water producing apparatus. As a result, the high-concentration electrolyzed water production apparatus (I) described above cannot produce high-concentration electrolyzed water.

[0009]

DISCLOSURE OF THE INVENTION

In order to solve the above-mentioned problems, the present invention improves the structure and configuration of electrodes of a conventional electrolyzed water producing apparatus, the form of an applied power supply, the duty and the amplitude, and the electrode material to improve the ionic and strong oxidation. It is an object of the present invention to provide an apparatus for producing electrolyzed water and neutral water containing a large amount of a volatile substance.

In order to achieve the above-mentioned object, an electrode for generating a strongly oxidizing substance, that is, a positive electrode is
It is manufactured from an alloy of platinum (Pt) and palladium (Pd), which produces almost no precipitates in water. Or, in order to significantly extend the life of the strongly oxidizing substance generating electrode,
A thin ferroelectric layer is formed on a metal having a similar coefficient of thermal expansion, for example, dumet or aluminum. The external electrode is formed into a flat plate shape, and the internal electrode is formed into a flat plate shape having a large number of slits through which water flows, a small strip type, or a thin wire (f
By using the ine wire type or the mesh type electrode, it is possible to realize a low power consumption device in which the water flow velocity between the internal electrodes and the distance between the electrodes are reduced. A square wave pulse high voltage, or a sequence-controlled pulse high voltage having a waveform similar to this, is applied between the electrodes with a proper duty, so that oxygen gas discharge and electrolytic action at the electrode surface in tap water are performed. Is promoted. Further, by alternating the applied pulse voltage, the deposition rate of solid impurities on the electrode surface is significantly reduced, and high concentration of electrolyzed water is generated in the feed water. Of course, HClO, which is one of the strong oxidizing substances, is added. A Cl-containing additive necessary for formation, for example, a reagent such as NaCl or KCl, can be added to obtain strong acidic water, strong alkaline water and neutral water in which a high concentration of a strong oxidizing substance is dissolved. .

The above-described electrolyzed water producing apparatus according to the present invention may be configured such that a large number of electrolyzed water producing apparatuses of the present invention are installed in parallel to increase the capacity of generated electrolyzed water, or that the electrolyzed water concentration of the present invention is increased. Although a number of the electrolyzed water producing devices can be installed and used in series, a concrete example will be omitted.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In order to solve the problem that the concentration of the output electrolyzed water of the conventional electrolyzed water producing apparatus (I) is low, a higher voltage is applied to the counter electrode where electrolyzed water is produced so that a large current flows. There is a need.

In the electrolyzed water manufacturing apparatus (II) according to the present invention shown in FIG. 3, a rectangular wave pulse voltage Vp (FIG. 4) or a half wave pulse voltage Vpac (FIG. 5) can be adopted.

However, in this case, impurities in the feed water are largely adhered to the surfaces of the counter electrodes 11 and 13, and the current is rapidly attenuated within several tens of hours, resulting in interruption of generation of electrolyzed water. In order to solve this problem, it is necessary to reverse the polarities of the electrodes 11 and 13.

That is, a negative voltage is applied to the positive electrode 13, a positive voltage is applied to the negative electrode 11, and then the electrodes are alternately switched. Therefore, a means for alternating the polarity of the applied power supply between the two opposing electrodes 11 and 13 at proper time intervals, that is, tens of seconds to tens of minutes is required. As a result, the electrolyzed water drainage ports are also replaced. Therefore, a means for replacing the electrolyzed water drainage port, such as an automatic conversion device using an electronic valve, is required.

In the electrolyzed water producing apparatus (II) according to the present invention, as shown in FIG.
The mesh type positive mesh electrode 13 and the negative mesh electrode 11 are installed on both sides of the separation membrane 12 so as to face each other with a narrow interval, and the surface areas of the two electrodes 11 and 13 are made as wide as possible and the interval d is made narrow. By reducing the electric resistance between the two electrodes 11 and 13, it is possible to effectively electrolyze at a voltage as low as possible.

However, in this case, since the two opposing electrodes 11, 13 are arranged with a narrow distance d, the water flow between the two electrodes 11, 13 becomes a vortex, which causes the two electrodes 11, 13 to have a vortex flow. The current that should move vertically around is disturbed, the generated strong oxidant is decomposed, and the electrolysis efficiency is significantly reduced. Further, ions having opposite polarities acting as space charges, which move to the opposite sides of the two electrodes 11 and 13, respectively, cause a space charge limiting action, which further reduces the electrolytic action. To do.

As shown in FIG. 3, these problems are caused by the electrodes 11 and 13 having a mesh type or a structure having a slit to reduce the electrode spacing d and increase the water flow width D, thereby increasing the two mesh electrodes 11 and This can be solved by allowing the electrolyzed water generated between the electrodes 13 to pass through the slits and flow out to a wider outer side, thereby reducing the water flow velocity and turbulence between the electrodes. In this case, since the distance d between the two mesh electrodes 11 and 13 can be further narrowed, the device is operated in a relatively high voltage and large current state even at a low applied voltage, which is extremely effective in low power consumption. It is possible to cause an oxygen gas discharge and electrolytic action in specific water. As a result, electrolysis efficiency is greatly improved.

The electrode spacing d can be arbitrarily determined by narrowing or widening the electrode spacing d with the separation membrane 12 according to the concentration and capacity of electrolyzed water required for various applications.

It has been described that the electrolyzed water producing apparatus (II) according to the present invention is configured to include the flat plate type electrodes 11 and 13 having slits as shown in FIG. However, the positive electrode 13
Is formed into a linear electrode, a linear electrode or a strip-shaped cylindrical electrode, and the negative electrode 11 is formed into a mesh-shaped, a small-piece-shaped or a linear concentric cylindrical electrode to configure an electrolyzed water producing apparatus. You can also Specific embodiments in this case are omitted.

As shown in FIG. 3, the electrolyzed water producing apparatus (II) according to the present invention generates electrolyzed water of high concentration as compared with the conventional electrolyzed water producing apparatus (I).

However, if the electrode spacing d is too narrow, the electric field (Vp / d) increases, the water flow velocity increases, that is, the ion concentration increases, and the space charge limiting action increases in the electrolyzed water region. Therefore, the applied voltage becomes relatively small, and electrolytic water cannot be effectively produced.

That is, in the electrolyzed water manufacturing apparatus (II) according to the present invention, the rectangular wave pulse voltage Vp
When an electric field is applied, electrostatic charges, that is, Cloning force, concentrates electric charges of opposite polarities, and the electric charges including ions generated by discharge and electrolysis and ions present in water are
It is densely packed in the space near the two electrodes 11 and 13. The dense space charge rejects the next moving charge of the same polarity and causes an action called space charge limiting action that hinders the movement of further ions, thereby reducing the current. Therefore, the deposition efficiency of ions and the generation efficiency of strongly oxidizing substances are significantly reduced.

FIG. 6 shows an embodiment in which the electrolyzed water producing apparatus (II) according to the present invention is improved in order to solve the above-mentioned problems. In detail, an external negative electrode 21 is provided outside the negative electrode 11, and an external positive electrode 23 is provided outside the positive electrode 13. As a result, the charges concentrated between the positive electrode 13 and the separation membrane 12 and between the negative electrode 11 and the separation membrane 12 are stored outside the positive electrode water region Bρ and the negative electrode water region Aρ, that is, the regions B and It becomes possible to rapidly move to A by electrostatic force (Clone attraction). The B-side pulse voltage V _PB and the A-side pulse voltage V _PA generate an electrostatic force that greatly reduces the charge between the electrodes 11 and 13, thereby significantly reducing the space charge limiting action. Therefore, with the same rectangular wave pulse voltage V _P , a relatively large electric field (E = V _P / d) can be obtained, and the generation capacity and efficiency of ions and strongly oxidative substances can be greatly improved. Therefore,
The dense charge between the narrow electrodes 11 and 13 and the electrolyzed water in which the ions and the strongly oxidative substance are dissolved easily form the external negative electrode 21 and the external positive electrode 23, that is, the negative electrode water region A and the positive electrode water region, respectively. It flows toward B. As a result, not only the turbulent flow and the space charge limiting action, but also the thermal decomposition action as in the reaction formula 1 is greatly reduced, and the electrolyzed water in which the ions and the strongly oxidizing substance are dissolved can be more effectively produced. The reason why the electrodes 11, 13 are formed in a mesh type, a thin line type, or a strip type and the electrode distance d is narrowed is as follows.
This is to effectively generate a high voltage discharge between the two electrodes 11 and 13. That is, the discharge is easily generated in a relatively low electric field, for example, at a sharp point, a thin wire, or a slit. In particular, if a high voltage pulse is applied on the positive mesh electrode 13 in water,
Oxygen molecules (O ₂ ) are generated by the electrolytic action as shown in the following reaction formula 2. [Reaction formula 2] 2H ₂ O → 2H ₂ (negative electrode) + O ₂ (positive electrode)

Since this oxygen molecule is in a gaseous state, its permittivity is extremely lower than that of water molecule (the permittivity ratio of water and oxygen is 80: 1). Is destroyed by discharge, and active species such as oxygen atoms (2O) and OH radicals are generated as shown in Reaction Formula 3 below. [Reaction Formula 3] O ₂ → O + O ---- (1) H ₂ O → OH + H ---- (2)

The oxygen atom (2O) and the OH radical are bonded to each other and / or to other adjacent molecules to form O ₃ , HClO, H ₂ O ₂ , O, etc., as shown in Reaction Formula 4 below. A strong oxidizer is produced. [Reaction Formula 4] O + O ₂ → O ₃ ---- (1) OH + Cl → HClCl ---- (2) OH + OH → H ₂ O ₂ ---- (3)

Here, compared to direct current (DC) power, alternating current (AC) power, and other powers (pulsating current, high frequency power, etc.), in the case of pulsed power, the rise time of the voltage can be controlled to be extremely short, O ₃ and HCl are generated because they can cause instantaneous high voltage discharge with low power.
Strongly oxidizing substances such as O, H ₂ O ₂ and O can be produced with high efficiency, so that they are extremely effective and economical. The details will be described later.

Here, when the electrodes 11 and 13 are formed into a mesh type or a thin line or strip type, the thickness and spacing of the lines and strips and the width of the stripes are such that the form and magnitude of the applied voltage or the generation thereof are generated. It is determined by the concentration and amount of electrolyzed water, the life of the electrode and the use, size and price of the device. This is because an expensive platinum group alloy such as Pt + Pd is used as the electrode material.
Because it uses. In the case of a small-scale device that does not require a long service life, or when the service life of the service is frequently replaced, another inexpensive metal such as stainless steel (SUS) or its alloy or platinum group alloy ( Other metals plated with Pt + Pd) may be used.

Further, the separation membrane 12 is preferably one having a good ion permeability between the two regions Aρ and Bρ and having a characteristic that water is not mixed with each other, and a normal ion exchange resin can be used. Depending on the case, cloth, resin, ceramic or the like can also be used.

Next, the form and period of pulse power and its application means will be described. As for the conventional electrolyzed water producing apparatus (I), it was confirmed as a result of the experiment that discharge generation and electrolysis in water can be caused by using the rectangular wave pulse power shown in FIGS. 4 and 5. It is inefficient because the electrodes are flat.

FIG. 6 shows an electrolyzed water production apparatus (III) in which the configuration of the electrolyzed water production apparatus (II) according to the present invention is improved, in which an external cathode 21 is provided outside the cathode 11. Electrode 1
An external positive electrode 23 is further provided on the outer side of 3. In addition, the positive electrode 13 and the separation film 12
The distance d, which is the sum of the distance between the negative electrode 11 and the separation film 12, can be adjusted narrow. Alternatively, the counter electrodes 11 and 13 may be formed into a mesh type, a thin line type, or a strip type with a sharp or small diameter, and if rectangular wave pulse power is applied as shown in FIGS. 4 and 5, the electrodes 11 and 13 may be formed. An extremely high electric field is generated on the surface of
Discharge generation and electrolysis in water can be more efficiently generated, and a large current can be obtained, and the generation capacity and generation efficiency of ions and strongly oxidizing substances can be further improved.

In other words, the interval d between the electrodes 11 and 13 is narrowed, and as shown in FIG. 4 or 5, a rectangular wave pulse power capable of instantaneously supplying a voltage that is several times as large as a normal direct current is supplied. When applied, an extremely strong and effective electrolytic action can be induced, the efficiency can be increased, and the overall average power consumption can be lower than that of DC power. Further, if the electrodes 11 and 13 are formed into a mesh type, a thin line type, or a strip type having a sharp or small diameter and the rectangular wave pulse power shown in FIG. 4 or FIG. There is an advantage that the discharge generation and the electrolysis action, that is, the actions shown in the reaction formulas 3 and 4 can be generated to further improve the electrolysis efficiency.

On the other hand, in the case of the pulsating current voltage, the power Pc is expressed as P _c = V · I · t.
In the case of the pulse power P _p shown in (3), P _p = V _p · I _p · t _p . Where t _p =
t _on + t _off , t _p is the time of one cycle of the pulse voltage, and t _on is the pulse voltage operation (o
n) time and t _off denote pulse voltage deactivating (off) time, respectively.

In the case of the pulsating power P _c , the voltage operating time t is fixed, only the applied voltage V is variable, and the applied current I depends on them. However, in the case of the pulse power P _p , a large instantaneous power can be obtained by setting V _p and I _p to a maximum of about twice the normal DC V and I and appropriately varying t _p. In addition, the applied power can be easily varied according to the pulse voltage operation time, that is, t _on, and the electrolytic concentration of water produced can be arbitrarily adjusted.

In order to generate such an effective voltage waveform V _p , the electronic circuit shown in FIG. 7 can be used. That is, the AC power (ac) is converted into an appropriate voltage by using the transformer (LT), rectified by the rectifier R, and then smoothed by the smoothing capacitor Cf. The DC voltage is pulsed by a semiconductor switching power control device such as an insulated gate bipolar transistor (IGBT) or a general transistor that is triggered by a trigger circuit (not shown) at a proper cycle t _p , t _on or t _off. Converted into a voltage, the rectangular wave pulse voltage Vp shown in FIG. 4 is generated. At this time, if the smoothing capacitor Cf, which has a relatively large volume and is expensive, is removed, the output voltage waveform Vpac shown in FIG.
Occurs, and this pulse waveform can be used as electric power for the electrolyzed water manufacturing apparatus (II) according to the present invention.

Referring again to FIG. 6, in the case of the high-concentration electrolyzed water manufacturing apparatus (III) according to the present invention, three power supplies V _G , V _PA , V _PB are required, and the power supplies V _G , V _PA , V. The voltage of the waveform shown in FIG. 8 is used for each _PB . However, for more effective high voltage discharge and electrolytic action, V _G and V _PA and V _PB are alternately applied as shown in FIG. 9, or V _G is applied as shown in FIG. Subsequently, a power supply capable of sequence control such as alternately applying V _PB and V _PA is more effective.

FIG. 11 shows an example of a power supply circuit diagram for generating V _PA , V _PB and V _G. One low voltage transformer (LT) is used and three pulse generation circuits are connected in series. The basic operating principle is the same as that shown in FIG. 7, except that the trigger circuit (T) is controlled so as to generate the pulse voltage shown in FIGS.

Further, effective pulsed power waveform width in the present invention, i.e., the duty ratio of the waveform (t _p = t _on + t ratio of t _on for t _p in _off) is suitably a signal of the trigger circuit T It can be changed very easily by controlling and adjusting, and thereby the output electrolytic concentration can be adjusted efficiently.

Here, the voltage V _G applied to the inner electrodes 11 and 13, the voltage V _PA or V _PB applied between the outer electrodes 21 and 23, and the electrode 11 depending on the required electrolytic water capacity and electrolytic concentration.
, 13, 21 and 23 and the intervals D and d can be set to appropriate voltage values, and it is practical that the values of V _G , V _PA and V _PB are about 20 to 1000 V, but It can be increased or decreased for any purpose. That is, a higher voltage may be required in the case of high-purity pure water, and a lower voltage may be used in a microminiature device.

Although a rectangular wave is shown as an example in FIGS. 8 and 10, a pulse generated from an actual semiconductor power supply circuit has damping oscillation, exponential rise / fall, overshoot and / or
Or, it has some transient phenomenon such as undershoot. The duty ratio of the pulse can be changed to optimum conditions depending on the form and size of the electrode and the output electrolyzed water capacity, and as a result of the experiment, t _on = 10 ⁻² to 10 ⁴ (seconds), t _off = 10 ⁻⁴ to 10 ² The range of (seconds) is relatively effective, but can be increased or decreased depending on the need and purpose.

[0042]   Next, the determination of the electrode material will be described.

In the conventional electrolyzed water production apparatus (I), since ferrite or platinum-plated titanium (Ti) is used as a material for forming the positive electrode 3, if a large current is supplied, the electrode material is submerged in water according to Faraday's law. There is a problem that the electrode 3 is separated and deposited and consumed, and the service life of the electrode 3 is shortened.

The problem is that platinum (Pt) is mixed with palladium (Pd) in an appropriate amount (0.05
If the mixed platinum alloy (Pt + Pd) is used, in the case of an ordinary electrolyzed water producing apparatus (I), it is 20 V or less. However, even when a high voltage of 100 V or more was applied to the electrode 3, the separation and deposition of the electrode was significantly reduced, the life was extended to 4,000 hours or more, and it was confirmed as an actual experiment result that it was extremely useful.

Therefore, the positive electrode 13 and the external positive electrode 23, which directly generate the ions and the strong electrolytic substance,
In the case of, the above-mentioned alloy of platinum and palladium, or platinum or an alloy of platinum (Pt +
It is extremely useful to use a material plated with Pd). However, in the case of a small-scale device that does not require a long service life at a low price, that is, the required amount of electrolysis is extremely small, the positive electrodes 13 and 23 are made of inexpensive stainless steel (SUS) or another kind of metal or alloy. Can also be formed. In this case, it is desirable to replace the positive electrodes 13 and 23 frequently. However, in the case of the negative electrodes 11 and 21, it is effective to use a material such as stainless steel.

Further, when the pulse voltage is applied in this way, the relative dielectric constant (εr
By coating a ferroelectric substance having a very high), consumption due to the deposition of the electrode substance can be reduced. This is because the consumption due to electrode deposition is proportional to the direct current (I) according to Faraday's law of precipitation, so in the case of pulse voltage, the direct current component (I
It is possible to reduce the amount of consumption due to the deposition of the electrode by reducing the amount of). In this case, a relatively high frequency with a low duty ratio of the pulse voltage is effective, and the relative permittivity of the ferroelectric substance is larger as compared with the relative permittivity of water, that is, εr = 80, or the ferroelectric layer is The thinner the film is, the more effective it is, or the more appropriate the unevenness on the electrode is, the more effective the discharge is generated and the electrolytic action is. Further, by filling a part or the whole of the space (D, d) between the inner and outer electrodes with the ferroelectric pellets or beads, the electrolytic action can be increased, and the same effect can be obtained.

Next, characteristics of the electrolyzed water producing apparatus according to the present invention and control of additives will be described.

[0048]   The high-concentration electrolyzed water producing apparatus (III) of the present invention is provided with an appropriate shaking as shown in FIG.
Apply pulse width power and set appropriate voltage (or current) magnitude for operation.
If so, the electrolytic water is discharged from the positive electrode drain pipe 18 in the area B, and the negative electrode drain in the area A is discharged.
A part of the supply water is discharged from the pipe 16. However, the negative electrode 11 and the positive electrode 13
, The structure is a mesh type electrode, and the flowing water width D is wider than the narrow electrode interval d.
Therefore, a strong electric field (E = V) is applied to the internal cathode water area Aρ and the internal cathode water area Bρ. _G / D) is generated, and a strong partial discharge phenomenon and electric charge are generated on the negative electrode 11 and the positive electrode 13.
The solution action occurs. Therefore, a strong electrophysicochemical reaction occurs and the following reaction formula 5
And the electrolytic action occurs as in (6), and ozone (O₃), Oxygen (O₂), Oxygen atom (O
), And secondary hydrogen peroxide (H₂O₂) Such as strong oxidants are extremely efficient
Is generated. [Reaction formula 5]   6H₂O → 6H₂+ O₂+ O₃+ O [Reaction formula 6]   H₂O + O → H₂O₂

Here, anions such as Cl ⁻ , SiO ₂ ⁻ , and SO ₃ ⁻ existing in the water in the internal cathode water region Aρ are an internal cathode water region Bρ due to electrostatic force (chrome attraction). And was present in the water of the internal positive electrode water region Bρ by the same principle,
Cations such as metal mineral ions such as Ca ⁺⁺ , Fe ⁺⁺ , Mg ⁺⁺ , and Cu ⁺⁺ move to the internal negative electrode water region Aρ, and mutual ion separation action also occurs.

Further, at this time, if appropriate voltages are applied to the outer cathode 21 and the outer cathode 23, the respective ions existing in the inner cathode water area Aρ and the inner cathode water area Bρ are It moves again to the negative electrode water region Aρ and the positive electrode water region Bρ, and is discharged through the negative electrode drain pipe 16 and the positive electrode drain pipe 18, respectively.

Therefore, the anode water generated on the side of the positive electrode drainage pipe 18 is electrolytic acidic water containing a large amount of O ₃ and anions, and trace amounts of O ₂ , O, H ₂ O _{2 and the} like. Drainage pipe 16
The cathode water produced on the side is alkaline water rich in cations.

The amount and the ion concentration of the strongly oxidizing substance in the discharged water are determined by the magnitude of the voltage of the applied power source V _G ,
It can be easily adjusted by manually controlling V _PA , V _PB , duty (particularly t _on ) or the like by using a manual or automatic control circuit. Also, the electrode 11,
It can also be adjusted by changing the size of 13, 21, 23, the electrode spacing d, the water flow width D, or the water flow rate.

Meanwhile, as in Scheme 7 below, Cl ^- is contained, or Cl ^- can produce substances such tap water, salt (NaCl), such as potassium chloride (KCl) is to supply water If present, the concentration of strong oxidants and ions is further increased. [Scheme ^{7] NaCl → Na + + Cl} - ---- (1) KCl → K + + Cl - ---- (2)

That is, if NaCl and / or KCl is mixed in water, the mutual coupling force becomes weak (it becomes 1/80 in water), and Na ⁺ or It is easily decomposed into K ⁺ and Cl ⁻ , and Na ⁺ and K ⁺ are deposited on the negative electrodes 11 and 21,
Cl ⁻ moves to and is focused on the positive electrodes 13 and 23, and greatly increases the current and the ion concentration. At this time, in particular, the positive electrode water region B and the internal anode water region Bρ contain a large amount of Cl ⁻ , and H ₂ O is electrolyzed as shown in the following reaction formula 8 to generate OH. By combining with Cl to form HCl (strongly oxidizable substance) as shown in the following reaction formula 9, a large amount of HCl is contained in the positive electrode water region B, and a large amount of HCl and a small amount of O ₂ , O ₃ , H ₂ O ₂ , O and other strong oxidative substances are generated. [Reaction Formula 8] H ₂ O → OH + H ---- (1) [Reaction Formula 9] OH + Cl → HClO ---- (2)

[0055]   Acidic or alkaline water contains a large amount of HClO, which is a strong oxidizing substance.
In this case, its bactericidal power is maintained for about 6 hours, and it is resistant to acidic or alkaline water.
O which is an oxidizing substance₃If a large amount of is contained, its sterilizing power is about 15 minutes
Its use is even more diverse, as it lasts for only a very short time. That is, O ₃ When it contains a large amount of H, H
When it contains a large amount of ClO, it can be used mainly as a pesticide substitute,
It is useful.

The water supplied to the water supply pipe 4 may be mainly tap water or ground water, but various aqueous solutions such as distilled water and reagent-dissolved aqueous solution may be used depending on the need and purpose.
The amount of the additive added to this aqueous solution or water such as NaCl or KCl varies depending on the type and the required ion concentration and the application conditions, but is about 0.01-1 wt.
It has been confirmed by the experimental results that it is effective and economical to add at a weight ratio of about%.

In the case of an ordinary electrolyzed water production apparatus, acidic water having a pH of about 4 to 6 and alkaline water having a pH of about 8 to 10 are usually discharged in the positive electrode drain pipe and the negative electrode drain pipe, and weak alkaline water is mainly used. Used for beverages.

In the recently developed high-concentration acidic electrolyzed water production device in Japan, the positive electrode is made of titanium (T
i) Platinum (Pt) -plated flat plate electrodes are provided on both sides of the separation membrane, that is, the ion exchange resin, and the applied voltage is 10 to 20 V (if the voltage becomes 20 V or more, the life of the electrode shortens sharply). The structure is the same as that of an ordinary ionized water production apparatus using only the principle of electrolysis that occurs at about 3 V or more using a direct current of about 3 V. Therefore, high-concentration ionized water of about pH 2 to 4 and pH 10 to 12 is discharged from the positive and negative electrode water outlet pipes. In this case, a strongly acidic water device of pH 2 to 4 is currently under development for the purpose of sterilization.
Since it is impossible to control the electrolytic concentration and the amount of the strongly oxidizing substance, and since mainly HCl is contained as the strongly oxidizing substance, there are many limitations in practical application, which is a problem.

As another embodiment according to the present invention, it is possible to provide an apparatus for producing neutral water containing a large amount of oxidant as well as weakly alkaline water and weakly acidic water, the details of which will be described below. .

In general, the electrolysis production apparatus produces and discharges electrolyzed water, so that neutral water of about pH 6 to 8 cannot be obtained. That is, the pH of the discharged water of the conventional electrolyzed water manufacturing device (I) is
4 to 6, while the discharge water of the high-concentration electrolyzed water producing apparatus (III) according to the present invention is p
Since it is H2-4 strong electrolyzed water, and its adjustment is impossible, there are limits to its practical use and application range.

In order to solve this, in the case of the high-concentration electrolyzed water production apparatus (IV) according to the present invention,
As shown in FIG. 12, the negative electrode water (strong alkaline water) W _A in the region _A and the positive electrode water (strong acidic water) W _{B in} the region A, which are drained from the water discharge pipes 16 and 18, are mixed. A means (M) for neutralizing is provided. As a result, it becomes possible to produce not only neutral water W _C having a pH of the same level as that of the water supplied from the first water supply pipe 4 but also weak alkaline water and weak acidic water.

[0062]   Thus neutral water (W_C) Becomes neutral water with a pH of 7, but due to discharge and electrolysis
Generated mainly by O₃And O₂Oxidizing substances such as and trace amounts of HCl, H₂O ₂ And O are still included. As shown in FIG. 15, although it decreases a little,
A considerable amount remains in the neutral water as it is.
It has a sufficient bactericidal action to kill 99.9% of E. coli in 10 seconds. Servant
So, this neutral water is for home use, dining room, hotel, barber shop, hospital or school.
It is used in a variety of fields such as water purification equipment for business, industrial use, or livestock, and sterilizing / disinfecting water equipment.
Can be used for

In this case, as the neutral water producing means M, it is sufficient to install a mixing tank in the electrolyzed water producing apparatus (III) or (IV), but an appropriate method and a method suitable for the purpose and need can be used. The device can be used further. The neutral water W _C can be generated as weakly acidic water or weakly alkaline water by adjusting the mixing amount of W _A and W _B or the pH value.

On the other hand, the fact that the neutral water W _C is finally produced in this manner means that the ion separation membrane 12 is removed and the drain pipes 16 and 18 are used in the electrolyzed water producing apparatuses (II) and (III) of the present invention. It is possible to increase the electrolysis efficiency more easily in this case, and in this case, there is a problem due to the presence of the separation membrane 12, that is, the life of the device is shortened by the membrane.
Membrane blockage, increased power consumption due to membrane resistance, and membrane cost are eliminated, making it more effective and economical.

Therefore, the high-concentration electrolyzed water producing apparatuses (II), (III) and (IV) of the present invention can be very effectively applied to various purposes and application fields, and further, as characteristics of discharged water, High-concentration electrolyzed water containing a large amount of minerals and water containing a high-concentration strong oxidizing substance are obtained. Here, the water dissolves a large amount of HCl and a small amount of H ₂ O ₂ , O and O ₂ , or a large amount of O ₃ and a small amount of HCl, H ₂ O ₂ , O and O ₂ . Furthermore, the pH value can be adjusted to any value between high-concentration strongly acidic water and strongly alkaline water, that is, between pH 2 and 12, including pH 7.

Here, when a large amount of HClO, which is a strong oxidizing substance, is contained in the electrolyzed water, its sterilizing power is maintained for a long time of about 6 hours, and O, which is a strong oxidizing substance of the electrolyzed water, is maintained. _{When a} large amount of ₃ is contained, its sterilizing power lasts for a short time of about 15 minutes, so that it can be used for various purposes.

[0067]

[Potential for industrial use]

As described above, when the improved high-concentration electrolyzed water manufacturing apparatus (III) of the present invention is applied to tap water, the electrolyzed water characteristics shown in FIG. 13 are obtained, and a slight amount of salt Na is added to tap water.
When Cl is mixed, water containing an extremely high concentration of oxidizing substances is produced as shown in FIG. 14, and these are three times as much as those produced by the conventional electrolyzed water producing apparatus (I). And 15 times more highly concentrated electrolyzed water. Furthermore, as shown in FIG. 16, ultra-high-concentration electrolytic water, i.e. strongly acidic water W _B of pH 2 to 4, strongly alkaline water W _A of pH 10-12, and be discharged by separating each neutral water W _C You can

Since the electrolyzed water thus obtained contains all strongly oxidizing substances, it is used in various fields, that is, by sterilizing, sterilizing, deodorizing, decolorizing, and strongly oxidizing action. Treatment, drinking water, water purification equipment and advanced water purification manufacturing, meat and food storage and sterilization, agricultural products and fish sterilization, industrial wastewater and industrial wastewater treatment, odorous and harmful volatile organic chemicals (VOCs) Treatments, substitution of agricultural chemicals, treatments during the manufacturing process of medicines and foods, and cleaning and sterilizing treatments in the medical field (for example, sterilizing and disinfecting hands and clothes of doctors, scalpels, scissors, medical instruments such as endoscopes, dental oral cavity) It can be widely used and applied in fields such as sterilization and cleaning).

In this electrolyzed water, KCl and / or NaCl initially charged from the water supply pipe 4 is used.
Since a small amount of such additives are decomposed by high-voltage discharge, electrolyzed and ionized and all disappear, problems such as salt damage generated from these additives can be avoided, and the additives can be used in various ways.

Further, the strongly acidic water W _B can be used not only for sterilizing and disinfecting bacteria but also for exterminating mold, moss, algae and pests, and thus can be used as a pesticide that does not induce secondary pollution, and sterilization of livestock wastewater. It can be applied to various purposes such as treatment, deodorization treatment, medical application (oral sterilization and washing machine for dentistry, stomach and intestine or vaginal washing machine, sterilization and disinfection of bacterial infection wall of hospital, etc.) for various purposes.

On the other hand, the strong alkaline water W _A can be applied to a special purpose, that is, drinking water for humans or livestock, water for cultivating special plants such as for hydroponic or irrigation, and undesired strong acidic water, acidic soil, Alternatively, it can be used for pH adjustment to neutralize acidified cultivation water, can also be used for water for promoting germination and growth of plants, and can be widely used for various purposes.

Then, the electrolyzed water producing apparatus (II) and the high-concentration electrolyzed water producing apparatus (III according to the present invention
), Even in strong alkaline ionized water W _A , as shown in FIGS. 13 and 14,
Since it contains a small amount of a strongly oxidative substance such as O ₃ , HCI, and H ₂ O ₂ , it can be used for more versatile purposes.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a configuration of a conventional electrolyzed water producing apparatus.

FIG. 2 is a diagram showing a waveform of electric power applied to the conventional electrolyzed water producing apparatus shown in FIG.

FIG. 3 is a cross-sectional view showing a configuration of an electrolyzed water producing apparatus according to an embodiment of the present invention.

FIG. 4 is a diagram showing a waveform of rectangular wave pulse power applied to the electrolyzed water producing apparatus according to the embodiment of the present invention shown in FIG. 3.

FIG. 5 is a diagram showing a waveform of half-wave pulse power applied to the electrolyzed water producing apparatus according to the embodiment of the present invention shown in FIG.

FIG. 6 is a cross-sectional view showing the configuration of a high-concentration electrolyzed water production apparatus according to another embodiment of the present invention.

FIG. 7 is a circuit diagram of a pulse power generation circuit of the high concentration electrolyzed water manufacturing apparatus shown in FIG.

FIG. 8 is a diagram showing a waveform of 3-pulse power applied to the high-concentration electrolyzed water manufacturing apparatus shown in FIG.

9 is a diagram showing a waveform of sequence-controlled three-pulse power applied to the high-concentration electrolyzed water manufacturing apparatus shown in FIG.

FIG. 10 is a diagram showing another waveform of sequence-controlled three-pulse power applied to the high-concentration electrolyzed water manufacturing apparatus shown in FIG. 6.

11 is a circuit diagram showing a circuit for generating sequence-controlled three-pulse power applied to the high-concentration electrolyzed water manufacturing apparatus shown in FIG.

FIG. 12 is a cross-sectional view showing a configuration of a high concentration electrolyzed water manufacturing apparatus according to still another embodiment of the present invention.

FIG. 13 is a graph showing the ozone concentration of electrolyzed water produced from ordinary tap water.

FIG. 14 is a graph showing the oxidant concentration of electrolyzed water produced from tap water in which a trace amount of salt is dissolved.

FIG. 15 is a graph showing the pH level of electrolyzed water produced from ordinary tap water.

FIG. 16 is a graph showing the pH level of electrolyzed water produced from tap water in which a trace amount of salt is dissolved.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) C25B 11/08 C25B 9/00 A 15/00 302 K (81) Designated country EP (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE), OA (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG), AP (GH, GM, KE, LS, MW, SD, SL, SZ, TZ, UG, ZW), EA (AM, AZ, BY, KG) , KZ, MD, RU, TJ, TM), AE, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CR, CU, CZ DE, DK, DM, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KZ, L C, LK, LR , LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, US, UZ, VN, YU, ZA, ZWF F term (reference) 4D061 DA03 DB07 EA02 EB04 EB07 EB12 EB17 EB19 EB30 EB35 EB39 GC14 GC18 4K011 AA06 AA10 AA05 CAA31 CAA31 CAA31 CAA31 4K021 AA09 AB07 AB15 BA02 BA03 BB03 CA05 CA06 CA08 CA09 DB01 DB12 DB13 DB18 DB20

Claims (8)

[Claims] 1. An insulating case having a water supply port and a drain port, which are installed to face each other with a separation membrane interposed therebetween and have slits in a part or all of them, or formed into a thin wire type, a thin strip type, or a mesh type. And the positive electrode contains platinum (Pd) -containing platinum (
A counter electrode composed of a pair of plate-shaped positive and negative electrodes made of Pt) alloy; and a first means for applying a direct current (DC) voltage or a pulse voltage between the positive electrode and the negative electrode. An apparatus for producing high-concentration electrolyzed water, comprising: 2. The high-concentration electrolyzed water production apparatus according to claim 1, wherein the counter electrode and the separation membrane have a cylindrical shape. 3. The apparatus further comprises external electrodes arranged outside each of the counter electrodes, and second means for applying a voltage between the external electrodes and the counter electrodes. The high-concentration electrolyzed water manufacturing apparatus according to claim 1. 4. A means for applying a voltage, wherein the first means or the second means applies a pulse voltage having a short voltage rise time between the positive electrode and the negative electrode, and a cycle is sequence controlled. The apparatus for producing high-concentration electrolyzed water according to any one of claims 1 to 3, further comprising: 5. The high concentration according to claim 1, wherein the counter electrode is plated with an alloy of palladium (Pd) and platinum (Pt) or with the alloy. Electrolyzed water production equipment. 6. The counter electrode is partially or wholly plated with a ferroelectric material, or the ferroelectric material is partially or wholly filled between the counter electrodes and between the outer electrodes. The high-concentration electrolyzed water production apparatus according to any one of claims 1 to 3, wherein 7. The separation membrane disposed between the counter electrodes is removed in order to discharge the neutral water in which the strong oxidizing substance is dissolved to the drainage port. The high-concentration electrolyzed water production apparatus according to any one of 1 to 6. 8. The apparatus further comprises means for mixing the strongly alkaline water and the strongly acidic water discharged to the drain outlet to generate neutral water and adjusting the pH value. ~ The high-concentration electrolyzed water production apparatus according to any one of items 6 to 6.