JP2010036169A - Method and apparatus for producing strongly alkaline water and strongly oxidized water by using alternating electric current - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for producing strongly oxidized water and strongly alkaline water. <P>SOLUTION: The apparatus for producing strongly alkaline water and strongly oxidized water by using an alternating electric current is characterized in that a ground electrode and a pair of application electrodes are arranged in a treatment vessel where the water, which is to be treated and is additive-free fresh water, is housed, a ground electrode-arranged area is isolated by a semipermeable member from an area where both the application electrodes are arranged, and a bipolar electrode is arranged at the ground electrode and in the isolated middle for increasing the electric conductivity between both the application electrodes. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention provides high frequency to additive-free water (well water, tap water) and to-be-treated water which is fresh water to which a salt selected from acid and salt, rock salt, potassium chloride and mineral salt is added or seawater to which acid is added. The present invention relates to a method and apparatus for producing strong oxidizing water and strong alkaline water by applying an alternating voltage.

If treated by applying high-frequency AC voltage to untreated fresh water or fresh water (well water, tap water, etc.) to which acid and sodium-containing salts are added, or seawater to which acid has been added, about 10 hours after energization The pH of the water to be treated exceeds 13.5 and alkaline water is generated. For example, when water containing potassium chloride is treated, hypochlorous acid (HC1O) is produced in the water by electrolysis, the concentration of which depends on potassium chloride, but under conditions of pH 2.5-3 and ORP ( It is said that hypochlorite will be 5 ppm or more when the oxidation-reduction potential value reaches 800 mV, and hypochlorite will be 20 ppm or more when the ORP is 1000 mV or more. It is conventionally known to exhibit an action. The strong alkaline solution utilizes the characteristic that pH 12 retains alkalinity for a long period of time as cleaning water or machining water.
JP 2000-84560 A

  However, the strong oxidized water prepared in this way has a relatively rapid decrease in the ORP value when energization is stopped, and it becomes 800 mV or less in about 1 hour after the energization is stopped. In addition, it becomes less than 500mv, which is the ORP value of tap water in about 3 hours, and if left untreated, the ORP value will turn negative and chlorine will be diffused. Therefore, the strong oxidation water prepared as described above has a problem in that the time from preparation to use for sterilization and insecticidal purposes is significantly limited. In addition, since it is sterilized at the stage where the ORP value is reduced to about +350 mV and does not contain chlorine, it is suitable as processing water in food factories and the like. Alkaline water can be produced by direct current decomposition, but the pH of the alkali decreases in one month.

  Accordingly, the basic object of the present invention is to provide a method for preparing strongly oxidized water, strongly alkaline reduced water, and an apparatus thereof for relatively long pot life for sterilization and insecticidal purposes. An additional object of the present invention is to prepare strongly alkaline water having an extremely low ORP value while simultaneously preparing strongly oxidized water excellent in bactericidal and insecticidal effects. However, the strongly reduced water prepared according to the present invention exhibits strong alkalinity, so it is used not for processing water in food factories or the like but for the purpose of cleaning oil stains or removing scales in piping.

According to the present invention, the above object is basically a strong acid and a strong alkali. Depending on the purpose of use, a method in which no salt or oxide is added, and a chloride is added to generate hypochlorite on the acid side. The metal ions of the bipolar electrode are released on both the alkali side and the acid side, and serve as a buffer solution that maintains the pH over a long period of time. As grinding fluid
Cooling effect is higher than oiliness and coolant solution, prevents expansion of work material, and damage to the blade is small.
The sliding and lubricating effects are almost comparable to oil and coolant solutions.
There is no rot odor due to bacteria and bacteria, and the working environment is improved.
The service life of cutting fluid, grinding fluid and cleaning fluid will be extended.
If the returned lubricant is separated into oil-water separation and chips, and neutralized with acidic water generated during alkaline water generation, there is no waste liquid treatment and there is a merit of cost reduction that is friendly to the environment.
This is not necessary when there is a degreasing process after machining,
There is an action such as.
In the present invention, a pair of application electrodes are arranged in the processing container, a semi-transmissive member is separated from both the application electrodes, a ground electrode is arranged inside, and a high frequency voltage is applied to the pair of application electrodes. In addition, strong oxidizing water is generated on the outer side of the cylindrical translucent member with the application electrode, and strong alkaline water is generated on the outer side in which the ground electrode is accommodated inside the semipermeable member. However, the bipolar electrode is grounded at the bottom of the cylindrical translucent member, and the bipolar electrode (for example, in the case of zinc) due to the potential difference between the outside (A and B electrodes) and the inside,
2H ₂ O + 2e → H ₂ + 2OH ⁻ (1)
Zn → Zn ²⁺ + 2e (2)
This occurs, and the pH rises and becomes stable.
In the case of carrying out the present invention, the semi-permeable member in which the oxidized water is generated on the outer side (A, B electrodes) of the semi-permeable member and the alkali reduced water is generated on the inner side of the semi-permeable member, The dissolved oxygen (DO) on the alkali side is reduced.

The gist of the apparatus for producing strong alkaline water and strong oxidized water by alternating current according to the present invention is that a ground electrode and a pair of applied electrodes are arranged in a treatment container in which treated water that is additive-free fresh water is accommodated, and A region where the ground electrode is disposed and a region where the two applied electrodes are disposed are separated by a semi-transmissive member, and further, a ground electrode and a middle portion separated to increase conductivity between the two applied electrodes, The bipolar electrode is arranged in
The bipolar electrode is a highly soluble zinc, aluminum, gold, iron, cobalt, nickel, magnesium, or any one metal of tin,
Furthermore, the semipermeable member includes a semipermeable membrane, a reverse osmosis membrane, an unglazed ceramic, or a cloth filter.

  The gist of the method for producing strong alkaline water and strong oxidized water by alternating current according to the present invention is that a ground electrode and a pair of applied electrodes are arranged in a processing container in which treated water that is additive-free fresh water is housed, and The region in which the ground electrode is disposed and the region in which the two application electrodes are disposed are separated by a semi-transmissive portion, and further, the ground electrode and the intermediate region separated to increase conductivity between the two application electrodes. A bipolar electrode is arranged to form an apparatus for producing strong alkaline water and strong oxidized water by alternating current, and an alternating voltage is applied to both the applied electrodes, and strong oxidized water is applied to a region where both applied voltages are disposed. And generating strongly alkaline water in a region where the ground electrode is grounded.

  Further, the water to be treated and the acid, salt, and potassium chloride described above are added to the fresh water to form water to be treated, and a high frequency AC voltage is applied to both applied electrodes, and the areas where both applied voltages are arranged In addition to generating strong oxidized water, strong alkaline water is generated in a region where the ground electrode is grounded.

Further, an FM signal generator for controlling a high frequency is built in, and the oscillation frequency is controlled in accordance with the signal, and a frequency portion that changes suddenly up or down during a gentle frequency fluctuation is created, thereby producing a translucent member. The internal water is raised, and the water to be treated inside the semipermeable member in the treatment container is discharged and taken out.
In the above water treatment apparatus, as shown in FIG. 2, the output from the DC power supply changes when the output control signal from the fluctuation signal generator is supplied from the control circuit to the high frequency oscillator and the oscillation frequency is controlled. The high-frequency switching command circuit gives a switching command from the high-frequency transmitter to the first and second high-frequency switches, and the first and second high-frequency switches are turned on and off to form alternating current and change the frequency. A part that suddenly falls from a sudden rise to a sudden rise is created, and an AC voltage applied between a pair of applied electrodes is applied, so that the water level on the inner side of the semi-transmissive member, the ground electrode side rises, and the semi-transmissive The water level on the inner side of the water level outside the member rises by about 7 cm or more in 10 hours, so that the water can be drained from the inner side to the outside of the container.
This phenomenon has a current interference effect due to a rapid fluctuation of the FM modulated wave, changes depending on the frequency modulation width and the fluctuation frequency, and flows into the negative side from the positive side of the electrode, and the polarity between the inner side and the outer side of the semi-transmissive member If you reverse the, the water level on the inside decreases.

  When the method of the present invention is carried out, the acid is added to promote the generation of oxidized water, and there is no particular limitation on the type thereof, and organic acids such as citric acid, acetic acid, tartaric acid, formic acid, sulfuric acid It is possible to use inorganic acids such as nitric acid, but the present invention is mainly intended for use as sterilizing / insecticidal water for crop cultivation, and therefore does not cause harm to crops and is price-sensitive. Taking into account, potassium chloride is preferable, and the amount added is about 0.1 to 1% by weight based on the water to be treated.

  Although salt may be used as the salt, rock salt rich in minerals and so-called “mineral salt” when applied to agricultural products, for example, “blue salt” in Okinawa Prefecture What is called is preferable.

  The applied electrode may be any material having acid resistance, such as titanium, platinum, silver, zinc, aluminum, copper, carbon, nickel, tin, iron, cobalt, etc., but a platinum-plated titanium plate is preferred. In addition, a titanium plate that has been subjected to a satin finish to increase the electrode area is preferably plated with platinum.

  The ground electrode may be any material having alkali resistance, but a titanium plate or a stainless steel plate is preferable.

  Examples of the semipermeable member include a semipermeable membrane, a reverse osmosis membrane, and an unglazed earthenware.

  An apparatus for producing strong oxidizing water and alkaline water according to the present invention includes a processing container, a ground electrode and a pair of application electrodes disposed in the processing container, a region in which the application electrode is disposed, and the ground electrode. A semi-transparent member that separates the region where the two are disposed, a DC power source, first and second high-frequency switches connected to the DC power source via variable resistors, and a resistance to these high-frequency switches. A high-frequency switching command circuit having flip-flop circuits connected to each other, a high-frequency oscillator connected to the high-frequency switching command circuit, and a control circuit connected to the high-frequency oscillator. A switching command is alternately applied to the first and second high-frequency switches, and a high-frequency AC voltage generated by turning on and off the high-frequency switches is applied to the pair of application electrodes. It is characterized by a door.

  In order to reduce the electrical resistance between the application electrode and the ground electrode, a bipolar electrode was provided.

  In the apparatus for producing strong oxidizing water and alkaline water according to the present invention, the power supply voltage is 100 V, but the effective value is about half or less, the current value is relatively low, and the safety is high. The frequency of the signal given to the switching command circuit is 20-50 KHz, preferably 30-35 KHz.

  ADVANTAGE OF THE INVENTION According to this invention, the strong oxidation water which has a strong bactericidal and insecticidal action, and the strong reduced water which can be utilized for the removal of oil dirt, the removal of the scale in piping, etc. can be prepared simultaneously and separately. The apparatus used in the present invention introduces well water, tap water, etc. added with acid and salt, salt selected from rock salt and mineral salt into the outer tank and semi-permeable inner tank as treated water, A pair of applied electrodes is placed in the tank, and a ground electrode is placed in the inner tank. A high-frequency AC voltage is simply applied to both applied electrodes, and the time required for producing strong oxidizing water and alkaline water is 30 minutes. It is about 1 hour and is relatively short.

Next, the apparatus for producing strong oxidizing water and alkaline water according to the present invention will be described with reference to the accompanying drawings, and more specifically by test examples.
Example 1
FIG. 1 shows an outline of the first embodiment of the apparatus for producing strong oxidizing water and alkaline water according to the present invention. This apparatus includes a water treatment unit 31 for water to be treated TW and an application device 30 for applying a high-frequency AC voltage to the water to be treated TW. The water treatment section 31 of the water to be treated includes an outer tub 21 and an inner tub 20 disposed in the outer tub 21, and the inner tub 20 is composed of a semi-permeable member (in this example) In some cases, unglazed earthenware is used), and a bipolar electrode made of a zinc plate, for example, is attached to the opening (bottom part) of the lower end as a highly soluble metal. In addition, the bipolar electrode is preferably made of any one of highly soluble zinc, aluminum, gold, cobalt, nickel, and magnesium.

  The treated water TW is an acid, and can be, for example, fresh water to which citric acid and salts such as mineral salts are added, or non-added tap water, well water, spring water, etc. It can be replaced by seawater.

  Two electrodes 2A and 2B are arranged in the outer tank 21, and one electrode GE is arranged in the inner tank 20. Among these electrodes, the application electrodes 2A and 2B use titanium, platinum, silver, zinc, aluminum, copper, carbon, nickel, cobalt, or the like. In this example, platinum is plated on a titanium plate, while the electrode GE is a titanium plate that is not treated at all. Attached to the bottom of the inner tank 20 is a bipolar electrode zinc 19. The electrodes 2A and 2B are connected to the high-frequency AC voltage application device 30 by means of conducting wires L1 and L2, so that a high-frequency AC voltage is applied alternately, while the electrode GE is grounded via the conducting wire L3. Yes.

  A high-frequency AC voltage application device 30 schematically shown in FIG. 1 includes a power source 3, a first high-frequency switch 5A and a second high-frequency switch 5B connected via a variable resistor 4, a high-frequency oscillator 11, and a flip-flop. Circuit FF. A high frequency switching command circuit controlled by the high frequency oscillator, which is connected to the first high frequency switch 5A through a resistor 9A and connected to the second high frequency switch 5B through a resistor 9B. A switching command circuit 10 and a capacitor 8 connected in parallel on the output side of the first high frequency switch 5A and the second high frequency switch 5B are provided. Each of the high frequency switches includes transistors 6A, 7A, 6B, and 7B. As described with reference to FIG. 1, the conducting wires L1 and L2 are connected to the application electrodes 2A and 2B, respectively, and the conducting wire L3 is connected to the ground electrode GE.

  The voltage of the power source 3 is 100V, but the effective voltage as the high frequency AC voltage applying device 30 is 50V or less, the current value is about 0.1-0.6A, and the high frequency oscillator 11 The frequency of the signal given to the high frequency switching command circuit is 20-50 KHz, for example 35 KHz.

Test Example 1 (Preparation of strong oxidizing water and alkaline water)
Using an apparatus as shown in FIGS. 1 and 3, well water added with 1% by weight of citric acid and 2% by weight of mineral salt is introduced into the outer tank 21 and the inner tank 20 as treated water. The energization treatment was carried out for a period of time and then left standing, and the redox potential of the aqueous solution in the outer tank was measured over time (the inner tank was removed from the apparatus after the energization was stopped).

  The results are as shown in Fig. 3. The redox potential, which was 30 mV at the initial value, became approximately 800 mV in 30 minutes, reached 1150 mV after 1 hour when the power supply was stopped, and 5 hours after the power supply was stopped. Later, it was over 900 mV, exceeding the value of 800 mV, which is considered to exhibit bactericidal and insecticidal action, and maintained a strong oxidized water state. This means that the pot life is 5 hours or more when the aqueous solution in the outer tank is used for sterilization and insecticidal purposes. The hypochlorous acid concentration of the aqueous solution in the outer tank when the energization was stopped was 35 ppm.

  The pH of the water to be treated before the start of energization was about 4, but the pH of the aqueous solution in the outer tank dropped to about 3-2.5 when the energization was stopped, while the aqueous solution in the inner tank had a sodium content inside. By flowing through the tank wall, the pH was about 12 which was strongly alkaline. The oxidation-reduction potential of the aqueous solution in the inner tank was −250 mV, and it was in a strongly reduced water state. In addition, the precipitation considered to be sodium hydroxide was recognized by the place which extracted the aqueous solution in an inner tank in the inner tank inner bottom part.

Comparative Test Example 1 (Preparation of strong oxidized water)
The initial pH value of the aqueous solution was about 4, and was about 3 when the power supply was stopped.

Test example 2 and comparative test example 2 (insecticidal test)
The strong insecticidal water obtained in Test Example 1 and Comparative Test Example 1 (the redox potentials were 1150 mV and 1050 mV, respectively) were used as test waters A and B to spray the oilworms and green worms to examine the insecticidal effect. The result 1 minute after spraying the test water was as shown in Table 1 below and proved to be effective. Although the results are almost the same, test water A is effective against large green caterpillars (about 3 cm), and green caterpillar that survived after 1 minute died after 15 minutes. In the case of water B, spraying on a large green caterpillar weakened but did not die.

[Table 1]

Test Example 3 and Comparative Test Example 3
Strongly oxidized water obtained in Test Example 1 and Comparative Test Example 1 (redox potentials of 1150 mV and 1050 mV, respectively) was sprayed on green vegetables as test waters C and D, and observed one day later. Although burnt) was observed in one part, it was healthy in terms of organization.

  The result of measuring the redox potential (ORP) and pH over time while treating the treated water (liquid temperature: 20.1 ° C) for 70 minutes with the device connected to the power supply and observing the condition of the treated water Was as shown in Table 2 below. The power consumption of the device is 300W (6A x 50V), but the effective value was initially set to 0.6A for current and 29V for voltage, but when the ground electrode in the outer tank was turned off by switch operation. The current was set to 5.5A and the voltage was set to 34V when the ORP of the solution in the inner tank reached -700mV and the pH reached 10-11 (in this test, 15 minutes after the power was turned on). .

[Table 2]

  As apparent from Table 2 above, strong oxidized water is generated in the outer tank, and strongly reduced water is generated in the inner tank.

Test Example 5 (Insecticidal test)
The solution in the outer tank obtained in the test example was collected, and the insecticidal effect against oilworms and green worms was examined in the same manner as in Test Example 2. By spraying the solution, oilworms (n = many) are completely killed within 1 minute, green caterpillars (n = 10) are mostly killed after 1 minute, and the remainder is significantly weakened, and after 5 to 10 minutes it is completely Died. This result shows that the strong oxidizing water obtained in the test example is higher in the insecticidal power than the strong oxidizing water obtained in the test example 1 as compared with the test example 2. In addition, the pot life in the case of using the strong oxidation water in the outer tank obtained in the test example as the water for insecticidal use is the same as that of the strong oxidation water obtained in the test example 1.

It is the schematic which shows 1st Embodiment of the manufacturing apparatus of the strong oxidation water and strong reduction water by this invention. FIG. 2 is a circuit diagram of a high-frequency AC applying device portion in the apparatus shown in FIG. The relationship between the treatment time and redox potential when treated water is treated using the equipment shown in Figs. 1 and 2, and after one hour has elapsed, the energization is stopped and left standing, and the redox potential over time. It is a graph which shows the result of having measured.

Explanation of symbols

1 Ground electrode,
2A, 2B electrode plate set,
3 DC power supply,
4 Variable resistance,
5A 1st high frequency switch,
5B second high frequency switch,
6A, 6B, 7A, 7B transistors,
8 capacitors,
9A, 9B resistance,
10 high frequency switching command circuit,
11 high frequency oscillator,
12 control circuit,
13 Shift register,
14 pulse generator,
15 flip-flop circuit,
19 Bipolar electrodes,
20 inner tank,
21 Outer tank,
30 High-frequency AC voltage application device,
31 Water treatment part.

Claims (6)

A region where a ground electrode and a pair of application electrodes are arranged in a treatment container containing treated water which is additive-free fresh water, and a region where the ground electrode is arranged and a region where both the application electrodes are arranged And a bipolar electrode arranged between the ground electrode and the middle separated in order to increase the conductivity between the two applied electrodes.
A device for producing strong alkaline water and strong oxidized water by alternating current characterized by the following. The bipolar electrode is made of any one of highly soluble zinc, aluminum, gold, iron, cobalt, nickel, magnesium, tin,
The apparatus for producing strong alkaline water and strong oxidized water by alternating current according to claim 1. The semi-permeable member is a semi-permeable membrane, reverse osmosis membrane or unglazed ceramic, cloth filter,
The apparatus for producing strong alkaline water and strong oxidized water by alternating current according to claim 1 or 2. A region where a ground electrode and a pair of application electrodes are arranged in a treatment container containing treated water which is additive-free fresh water, and a region where the ground electrode is arranged and a region where both the application electrodes are arranged Are separated by a semi-permeable part, and a bipolar electrode is arranged between the ground electrode and the intermediate part separated to increase the conductivity between the two applied electrodes, and an apparatus for producing strong alkaline water and strong oxidized water by alternating current Form the
Applying an alternating voltage to the two applied electrodes to generate strongly oxidized water in a region where the two applied voltages are disposed, and generating strongly alkaline water in a region where the ground electrode is grounded,
A method for producing strong alkaline water and strong oxidized water by alternating current. The treated water and the acid, salt and potassium chloride according to claim 4 are added to fresh water to form treated water, a high-frequency AC voltage is applied to both applied electrodes, and a region where both applied voltages are arranged Producing strong oxidizing water and producing strongly alkaline water in the area where the ground electrode is grounded;
The method for producing strong alkaline water and strong oxidized water by alternating current according to claim 4. An FM signal generator for controlling the high frequency is built in, and the oscillation frequency is controlled in response to the signal, and by creating a frequency portion that changes suddenly during a gentle frequency fluctuation, Raise the water and discharge / take out the water to be treated inside the semi-permeable member in the treatment container;
The method for producing strong alkaline water and strong oxidized water by alternating current according to claim 4 or 5.

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