WO2012060078A1 - Method and apparatus for altering oxidation reduction potential of aqueous liquid - Google Patents
Method and apparatus for altering oxidation reduction potential of aqueous liquid Download PDFInfo
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- WO2012060078A1 WO2012060078A1 PCT/JP2011/006045 JP2011006045W WO2012060078A1 WO 2012060078 A1 WO2012060078 A1 WO 2012060078A1 JP 2011006045 W JP2011006045 W JP 2011006045W WO 2012060078 A1 WO2012060078 A1 WO 2012060078A1
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- tank
- aqueous liquid
- electrode
- flow path
- separator
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/04—Oxidation reduction potential [ORP]
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
Definitions
- the present invention relates to a method and apparatus for changing the redox potential of an aqueous liquid.
- Water with a high oxidation-reduction potential and water with a low potential are expected to have various applications due to their characteristics. For example, they are expected to be applied to health promotion, beauty, washing, sterilization, and the like.
- JP-A-11-57715 a method of changing the oxidation-reduction potential of water by electrolyzing water.
- Japanese Patent Application Laid-Open No. 11-57715 describes a method for adjusting pH together with ORP.
- an object of the present invention is to provide a novel method and apparatus for changing the redox potential of an aqueous liquid.
- the present invention provides a method for changing the redox potential of an aqueous liquid flowing in a flow path.
- This method is a method of changing the oxidation-reduction potential of an aqueous liquid flowing in a flow path, and (i) the first and second electrodes disposed in the first and second tanks partitioned by the separator, respectively.
- the second tank constitutes a part of the flow path, and the first tank is connected to the flow path via the separator.
- the present invention also provides an apparatus for changing the oxidation-reduction potential of an aqueous liquid flowing through a flow path.
- This device is a device that changes the oxidation-reduction potential of an aqueous liquid flowing in a flow path, and a container in which the aqueous liquid is disposed, a separator that partitions the container into a first tank and a second tank, A voltage is applied between the first electrode disposed in the first tank, the second electrode disposed in the second tank, and the first electrode and the second electrode.
- the second tank is formed with an inlet and an outlet connected to the flow path so that the second tank forms a part of the flow path, A first tank is connected to the flow path via the separator.
- the redox potential of the aqueous liquid can be easily changed. Further, when changing the oxidation-reduction potential, the change in pH of the aqueous liquid can be controlled as necessary. Further, according to the present invention, it is possible to simplify and downsize the apparatus.
- FIG. 1 schematically shows an example of the apparatus of the present invention.
- FIG. 2 schematically shows another example of the apparatus of the present invention.
- FIG. 3 schematically shows an example of the operating state of the apparatus shown in FIG.
- FIG. 4 schematically shows another example of the operating state of the apparatus shown in FIG.
- FIG. 5A schematically shows another example of the apparatus of the present invention.
- FIG. 5B schematically shows an example of the operating state of the apparatus shown in FIG. 5A.
- FIG. 6 schematically shows another example of the apparatus of the present invention.
- FIG. 7 schematically shows an example of the operating state of the apparatus shown in FIG.
- FIG. 8 schematically shows an example of the usage state of the apparatus of the present invention.
- FIG. 9 schematically shows another example of the usage state of the apparatus of the present invention.
- FIG. 1 schematically shows an example of the apparatus of the present invention.
- FIG. 3 schematically shows an example of the operating state of the apparatus shown in FIG.
- FIG. 4 schematically shows another example of the
- FIG. 10 schematically shows another example of an apparatus for changing the ORP of an aqueous liquid.
- FIG. 11 schematically shows another example of an apparatus for changing the ORP of an aqueous liquid.
- FIG. 12A schematically shows the shape of the first electrode of the apparatus used in the example.
- FIG. 12B schematically shows the arrangement of the first electrode and the separator in the apparatus used in the example.
- FIG. 13 schematically shows another example of the apparatus of the present invention.
- the present invention will be described by way of examples, but the present invention is not limited to the examples described below.
- specific numerical values and specific materials may be exemplified, but other numerical values and other materials may be applied as long as the effect of the present invention is obtained.
- the redox potential may be described as “ORP”.
- the term “amount of aqueous liquid” means the volume of the aqueous liquid unless otherwise specified.
- the method of the present invention includes steps (i) and (ii).
- the first and second electrodes respectively disposed in the first and second tanks partitioned by the separator are immersed in the aqueous liquid.
- the aqueous liquid may be referred to as “aqueous liquid (A)”.
- the first electrode is disposed in the first tank, and the second electrode is disposed in the second tank.
- the second tank constitutes a part of the flow path through which the aqueous liquid (A) flows.
- the first tank is connected to the flow path via a separator. That is, the flow path is not directly connected to the first tank.
- the aqueous liquid (A) in the second tank is mixed with or replaced by the aqueous liquid (A) outside the second tank as the aqueous liquid (A) flows through the flow path. It is done.
- the aqueous liquid (A) in the first tank is the aqueous liquid (A) outside the first tank only when the aqueous liquid (A) passes through the separator (that is, the aqueous liquid in the second tank). Liquid (A)) or mixed with it.
- This example includes a case where the aqueous liquid (A) in the first tank is discharged from the drainage passage, and the aqueous liquid (A) in the second tank is moved into the first tank accordingly. It is.
- the second tank is provided with two connection parts connected to the flow path.
- the second tank includes an inflow port and an outflow port.
- the inflow port and the outflow port are connected to the flow path such that the second tank forms a part of the flow path.
- the aqueous liquid (A) flows into the second tank from the inlet connected to the flow path.
- the aqueous liquid (A) treated in the second tank flows out from the outlet connected to the channel to the channel.
- the inflow port and the flow path, and the outflow port and the flow path may be fixed. Alternatively, the inflow port and the flow channel, and the outflow port and the flow channel may be connected in a detachable state.
- the first tank may include a connection portion connected to the flow path, but usually does not include a connection portion connected to the flow path.
- the apparatus used in the present invention may further include a water tank to which a flow path is connected.
- the flow path may comprise the circulation path (annular path) containing a water storage tank and a 2nd tank.
- the first and second tanks are partitioned by a separator. Examples of the first and second tanks partitioned by the separator were partitioned not only by the first and second tanks partitioned only by the separator but also by a separator and a partition wall that does not allow liquid and gas to pass through. First and second tanks are included.
- the separator it is possible to use a separator that can suppress a short circuit between the electrodes and can suppress a gas generated on the surface of the electrode from passing therethrough.
- the separator allows liquids and ions (both positive and negative ions) to pass through.
- the separator suppresses and preferably prevents the passage of gas (bubbles) in the aqueous liquid (A).
- the separator has an insulating property.
- a part of the separator (for example, the inside) may not be insulative. That is, the separator may be insulative when viewed as a whole.
- the separator is a diaphragm that allows both cations and anions to pass therethrough (that is, a diaphragm that does not have ion exchange capacity), and is a porous and insulating diaphragm.
- the separator is preferably hydrophilic.
- a separator having hydrophilicity gas permeation can be more effectively suppressed.
- the separator include a separator made of a resin (for example, resin fiber). Resins include natural resins and synthetic resins. Examples of the form of the separator include a cloth (woven fabric or non-woven fabric) and a membrane (porous membrane). Examples of the separator having hydrophilicity include a separator containing or made of a resin containing a hydrophilic group. Examples of the separator having hydrophilicity include a separator made of or made of a hydrophilic resin.
- the separator may be a cloth or a film formed of cotton, hemp, rayon, hair, silk, or the like. Usually, the separator does not contain an ion exchange material. That is, normally, the separator is not an ion exchange membrane, but allows both cations and anions to pass through.
- a phenomenon such as a capillary phenomenon occurs can be cited as one of measures. Specifically, a part of the separator is immersed in water, and the remaining part is taken out of the water. At that time, if the water rises against the gravity against the remaining portion, it can be estimated that the separator is hydrophilic.
- the separator preferably suppresses gas permeation while allowing ions to easily permeate. Therefore, an example of a preferable separator is a separator having a high air permeability resistance (Gurley) (that is, difficult to vent) and a high porosity.
- Gurley air permeability resistance
- first and second electrodes electrodes capable of causing an electrolysis reaction of water are used. It is preferable that a metal that easily undergoes an electrolysis reaction of water exists on the surfaces of the first and second electrodes. Examples of metals that are susceptible to electrolysis of water include platinum. Examples of the first and second electrodes include a metal electrode, and a metal electrode that can exist stably in the step (ii) is preferably used. A preferred example of the first and second electrodes is a metal electrode having platinum on the surface. Specifically, a platinum electrode or a metal electrode whose surface in contact with a liquid is coated with platinum is preferably used. Examples of metals coated with platinum include niobium, titanium, tantalum, and other metals.
- the surface of the electrode (anode) where oxygen gas is generated is preferably coated with platinum.
- An electrode made of a conductive material other than metal for example, a conductive carbon material
- an electrode obtained by coating the surface of these conductive materials with a metal platinum or other metal
- the distance between the first electrode and the second electrode may be in a range of 0.1 mm to 10 mm (for example, a range of 0.1 mm to 5 mm).
- the shorter the distance between the first electrode and the second electrode the lower the voltage required for water electrolysis.
- the shorter the distance between the first electrode and the second electrode the easier it is for hydrogen ions and hydroxide ions to move from one tank to the other, so the aqueous liquid in the first tank
- the difference between the pH of the aqueous liquid and the pH of the aqueous liquid in the second tank can be reduced.
- the first electrode and the second electrode may be in contact with the separator.
- the distance between the first electrode and the separator and the distance between the second electrode and the separator may each be in the range of 0 mm to 5 mm (for example, in the range of 0 mm to 1 mm).
- the first and second electrodes may each have a shape that spreads two-dimensionally.
- the first and second electrodes may be flat electrodes.
- a through hole may be formed in the flat electrode.
- each of the first and second electrodes may be composed of a plurality of linear electrodes arranged on a virtual plane. An example of such an electrode is shown in FIG. 12A.
- the first and second electrodes have a shape that expands two-dimensionally, it is preferable that the first electrode and the second electrode face each other in parallel with the separator interposed therebetween. Further, the plurality of first electrodes and the plurality of second electrodes may be opposed to each other with the separator interposed therebetween.
- Each of the first electrode and the second electrode may include a plurality of linear electrodes arranged in a stripe shape along the vertical direction.
- the surface of the linear electrode is preferably curved rather than flat. Therefore, the cross section of the linear electrode is preferably circular rather than rectangular.
- the distance D between two adjacent linear electrodes may be 1.5 mm or less.
- the distance D may be in the range of 0.1 mm to 1.5 mm, for example.
- the smaller the distance D the smaller the influence of the voltage drop.
- by setting the distance D to 1.5 mm or less it is possible to suppress the gas generated on the electrode surface from staying on the electrode surface.
- first and second tanks tanks that can stably hold an aqueous liquid can be used.
- one container is partitioned by a separator (or a separator and a partition) to form first and second tanks.
- the first tank and the second tank include a resin tank and a tank whose inner surface is made of resin.
- the inner surface of the tank may have hydrophilicity. Since the inner surface of the tank has hydrophilicity, the gas can easily move upward. Examples of the inner surface having hydrophilicity include an inner surface made of a hydrophilic resin and an inner surface that has been subjected to a hydrophilic treatment. Moreover, in order to prevent the gas generated on the surface of the electrode from staying on the upper surface of the tank, the upper surface of the tank may be inclined.
- next step (ii) by applying a voltage between the first electrode and the second electrode while the first electrode and the second electrode are immersed in the aqueous liquid (A), an aqueous solution is obtained.
- the water in the liquid (A) is electrolyzed.
- the electrolysis is performed in a state where the aqueous liquid (A) is flowing through the flow path (including the second tank).
- reaction at the anode and the cathode can be considered as the following formulas (3) and (4), but in this specification, they are described as the reactions of the above formulas (1) and (2).
- aqueous liquid means a liquid containing water.
- the aqueous liquid (A) include water such as tap water and an aqueous solution.
- the aqueous liquid (A) may be an aqueous solution in which a salt is dissolved.
- the aqueous liquid (A) may contain an organic solvent (for example, alcohol) other than water.
- the proportion of water in the solvent of the aqueous liquid (A) is 50% by weight or more (for example, 80% by weight or more, 90% by weight or more, or 95% by weight or more), and 100% by weight or less.
- the solvent of the aqueous liquid (A) is water.
- the conductivity of the aqueous liquid (A) may be in the range of 100 ⁇ S / cm to 50 mS / cm (eg, 140 ⁇ S / cm to 2 mS / cm). In general, when the ion concentration is low, the ORP hardly changes.
- ions may be added to the aqueous liquid (A). For example, a salt may be dissolved in the aqueous liquid (A). There is no limitation in particular in the salt to dissolve, A sulfate and phosphate may be sufficient.
- the voltage (DC voltage) applied between the electrodes is set so that oxygen gas is generated from the anode and hydrogen gas is generated from the cathode.
- the applied voltage may be in the range of 3 to 30 volts (eg, in the range of 6 to 20 volts).
- Step (ii) may be performed under the condition that the gas generated on the surface of the second electrode tends to remain in the aqueous liquid (A) as compared with the gas generated on the surface of the first electrode.
- the ORP of the aqueous liquid (A) in the second tank can be changed efficiently.
- the path from the second tank to the use place is not open to the atmosphere and the longer one is , ORP is easily changed efficiently.
- the length of the path connecting the second tank and the place of use may be, for example, 50 cm or more, and may be in the range of 50 cm to 500 cm.
- the gas generated at the second electrode may be released.
- the gas may be released periodically or irregularly.
- the release of the gas may be performed by a valve disposed in any of the second tank, the water tank connected to the second tank, and the path connecting the second tank and the water tank.
- Step (ii) may be performed in a state where the first tank is open to the atmosphere and no air flows into the second tank.
- the “state in which the atmosphere does not flow into the second tank” includes a state in which the gas generated in the second electrode is released from the second tank while the air does not flow into the second tank.
- the gas generated on the surface of the first electrode is released to the atmosphere.
- the gas generated on the surface of the second electrode is likely to remain in the aqueous liquid (A) by releasing the gas only when the pressure of the gas generated at the second electrode becomes too high. .
- step (ii) the amount of aqueous liquid (A) to be treated in the first tank (volume V1 (cm 3 )) and the amount of aqueous liquid (A) to be treated in the second tank (volume V2 (cm 3 )) and the pH of the aqueous liquid (A) treated in the second tank may be adjusted.
- the larger the value of (V2 / V1) the smaller the pH change of the aqueous liquid treated in the second tank.
- the value of (V2 / V1) may be in a range of 10 to 2 ⁇ 10 6 (for example, a range of 10 to 50000 or a range of 200 to 15000).
- the amount (volume V1) of the aqueous liquid (A) processed in the first tank is the amount of the aqueous liquid (A) disposed in the first tank, and is usually approximated by the internal volume of the first tank. it can.
- the amount (volume V2) of the aqueous liquid (A) processed in the second tank can be normally replaced with the internal volume of the second tank. it can.
- the first approximation is an approximation when the flow path is not a circulation path.
- the volume V2 in this case can be replaced with the volume of the aqueous liquid (A) processed in the second tank and discharged from the second tank.
- the second approximation is an approximation when the second tank constitutes a part of a flow path that is a circulation path.
- the volume V2 can be replaced with the total amount of the aqueous liquid (A) present in the circulation path.
- the volume V2 is equal to the internal volume of the second tank. The total of the volume of the aqueous liquid (A) arranged in the flow path connecting the second tank and the water storage tank and the volume of the aqueous liquid (A) arranged in the water storage tank can be replaced.
- the volume V2 can be replaced by the volume of the aqueous liquid (A) placed in the water tank.
- the third approximation is another approximation in the case where the second tank constitutes a part of a flow path that is a circulation path.
- the volume V2 can be approximated by the volume in the circulation path.
- the circulation path is composed of a second tank, a water storage tank, and a flow path connecting them, it is possible to regard the sum of the internal volumes as the volume V2.
- the volume V2 can be replaced with the internal volume of the water tank.
- step (ii) the internal volume of the first tank (or the amount of the aqueous liquid (A) disposed in the first tank) and the aqueous liquid (A ), The pH of the aqueous liquid (A) treated in the second tank may be adjusted. Further, from the above third approximation, in step (ii), the ratio between the internal volume of the first tank (or the amount of the aqueous liquid (A) arranged in the first tank) and the internal volume of the water storage tank. The pH of the aqueous liquid (A) treated in the second tank may be adjusted.
- the aqueous liquid that flows in the second tank per minute The amount of (A) is in the range of 1 to 10 6 times the amount of the aqueous liquid (A) (or the internal volume of the first tank) disposed in the first tank (for example, 10 to 10 5 times Range or 100 times to 10 5 times).
- the second tank does not constitute a part of the circulation path (for example, when the aqueous liquid processed in the second tank is used as it is)
- the higher this magnification is, the higher the ratio is processed in the second tank.
- the fluctuation of the pH of the aqueous liquid (A) is reduced.
- the aqueous liquid processed by a 2nd tank by making this magnification into the said range and shortening the distance of an electrode (1st and 2nd electrode) and a separator (it is set as the distance mentioned above, for example).
- the change in pH of (A) can be particularly suppressed.
- the amount of the aqueous liquid (A) present in the circulation path is the first amount.
- the amount of the aqueous liquid (A) placed in the tank (or the internal volume of the first tank) may be in the range of 10 to 10 6 times (for example, in the range of 100 to 10 5 times). The higher this magnification, the smaller the fluctuation of the pH of the aqueous liquid (A) treated in the second tank (that is, the pH of the aqueous liquid (A) present in the circulation path).
- the aqueous liquid processed by a 2nd tank by making this magnification into the said range and shortening the distance of an electrode (1st and 2nd electrode) and a separator (it is set as the distance mentioned above, for example).
- the change in pH of (A) can be particularly suppressed.
- the internal volume of the first tank is not particularly limited, and may be in a range of 1 cm 3 to 1000 cm 3 (for example, a range of 3 cm 3 to 200 cm 3 or a range of 3 cm 3 to 20 cm 3 ).
- the internal volume of the second tank may be in these ranges.
- the internal volume of the second tank is equal to or greater than the internal volume of the first tank.
- step (ii) it was processed in the second tank according to the ratio of the amount of electricity flowing between the first electrode and the second electrode per unit time and the amount of ions passing through the separator per unit time.
- the pH of the aqueous liquid (A) may be adjusted. As the amount of electricity flowing between the electrodes per unit time increases, the pH change of the aqueous liquid (A) treated in the second tank tends to increase. On the other hand, the larger the amount of ions passing through the separator per unit time, the smaller the pH change of the aqueous liquid (A) treated in the second tank.
- the amount of electricity flowing between the electrodes per unit time can be increased as the voltage applied between the electrodes is increased.
- the amount of ions passing through the separator per unit time can be increased as the area of the separator through which ions can pass is increased. Also, the shorter the distance between the electrode and the separator, the greater the amount of ions that pass through the separator per unit time. In addition, the smaller the internal volume of the tank, the larger the amount of ions that pass through the separator per unit time.
- Step (ii) is performed in a state where the aqueous liquid (A) in the first tank is not in a liquid-permeable state and the aqueous liquid (A) in the second tank is in a liquid-permeable state. According to this configuration, it is possible to reduce the change in pH of the aqueous liquid (A) treated in the second tank.
- the “liquid passing state” means a state in which liquid continuously flows into and out of the tank.
- the pH of the aqueous liquid (A) in the first tank and the pH of the aqueous liquid (A) in the second tank are , Often very different. Therefore, in order to keep the pH of the aqueous liquid (A) in the second tank at a value immediately after the step (ii) is performed so as not to approach neutrality, after the step (ii), The aqueous liquid (A) and ions in the first tank may be prevented from moving and diffusing into the second tank. For example, the water in the first tank may be discharged after step (ii).
- the first tank and the second tank may be partitioned by a shielding plate to prevent the movement and diffusion of the aqueous liquid (A) and ions.
- the pH becomes a substantially constant value after voltage application.
- the aqueous liquid (A) in the tank may be allowed to stand.
- the pH approaches neutrality. At this time, it can accelerate
- the pH of the aqueous liquid (A) flowing in the second tank may be controlled by discharging a part of the aqueous liquid (A) arranged in the first tank.
- pH of aqueous liquid (A) may be adjusted.
- pH of aqueous liquid (A) may be adjusted.
- the aqueous liquid (A) on the anode side becomes acidic, and the aqueous liquid (A) on the cathode side becomes alkaline. Therefore, it is possible to change the pH of the entire aqueous liquid (A) by discharging the aqueous liquid (A) of either the first tank or the second tank during voltage application or after voltage application. It is.
- a scale such as calcium may be deposited in the cathode side tank.
- a voltage may be applied in the reverse direction while the flow of the aqueous liquid 30 is stopped.
- the alkaline aqueous liquid can be made acidic and the scale can be dissolved.
- the apparatus of the present invention includes a container, a separator, a first electrode, a second electrode, and a power source.
- An aqueous liquid (namely, aqueous liquid (A)) is arrange
- the separator partitions the container into a first tank and a second tank.
- the first electrode is disposed in the first tank, and the second electrode is disposed in the second tank.
- the power source applies a voltage between the first electrode and the second electrode.
- an aqueous liquid (A) is obtained by applying a voltage between the first electrode and the second electrode in a state where the first electrode and the second electrode are immersed in the aqueous liquid (A).
- the process of electrolyzing the water inside is performed.
- this process may be referred to as an “electrolysis process”.
- the electrolysis process performed in the apparatus of the present invention corresponds to step (ii) of the method of the present invention. Since the container (first and second tanks), the separator, the first and second electrodes, and the aqueous liquid (A) have been described above, overlapping descriptions may be omitted.
- the second tank constitutes a part of the flow path. That is, the second tank is formed with an inlet and an outlet that are connected to the flow path so that the second tank forms a part of the flow path. Further, the first tank is connected to the flow path via a separator.
- the DC power supply can be used for the power supply.
- the power source may be an AC-DC converter that converts an AC voltage obtained from an outlet into a DC voltage.
- the power source may be a power generation device such as a solar cell or a fuel cell, or a battery (for example, a secondary battery).
- a power generation device or a battery as a power source, the device of the present invention can be used in regions and situations where power is not supplied.
- the device of the present invention can be controlled manually.
- the device of the present invention may comprise a controller.
- the controller includes an arithmetic processing unit and storage means.
- the storage means may be integrated with the arithmetic processing unit.
- the storage means include an internal memory, an external memory, and a magnetic disk (for example, a hard disk drive) of the arithmetic processing unit.
- a program for executing a necessary process is recorded in the storage means.
- An example of the controller includes a large scale integrated circuit (LSI).
- the apparatus of the present invention includes various devices (power supply, pump, valve, filter, etc.) and various measuring instruments (ORP meter, ammeter, pH meter, ion concentration meter, conductivity meter, dissolved oxygen meter, dissolved hydrogen meter, etc.) May be included.
- the controller may be connected to these devices and measuring instruments.
- the controller may perform the electrolysis process by controlling the device based on the output of the measuring instrument.
- the device of the present invention is a conductivity meter for measuring the conductivity of an aqueous liquid or a device for confirming gas generation from a counter electrode (for example, a light emitting device such as an LED or a laser diode). And a combination of a light receiving element such as a photodiode).
- the apparatus of this invention may be equipped with the voltmeter for measuring the voltage applied between electrodes, and the ammeter for measuring the electric current which flows between electrodes.
- the controller may control the voltage application and / or the flow rate of the aqueous liquid (A) based on the data obtained from various measuring instruments and the ORP target value set by the user of the apparatus. Furthermore, the controller applies the voltage, the flow rate of the aqueous liquid (A), and the aqueous liquid (A) discharged from the first and second tanks based on the target value of pH set by the user of the apparatus. At least one selected from these amounts may be controlled.
- the apparatus of the present invention may be provided with a membrane (for example, an ion exchange membrane) or an ion exchange material that selectively allows cations or anions to pass therethrough as necessary.
- a membrane for example, an ion exchange membrane
- an ion exchange material that selectively allows cations or anions to pass therethrough as necessary.
- the apparatus of the present invention typically does not include such membranes (eg, ion exchange membranes) or ion exchange materials.
- tube for the aqueous liquid (A) in a tank to move according to the raise of the pressure in a tank may be connected to the tank.
- tube for the aqueous liquid (A) in a 1st tank to move according to the raise of the pressure in a 1st tank may be connected to the 1st tank.
- the tube may be referred to as “tube (T)”.
- the tube (T) extends upward from the first tank.
- the tube (T) repeats descending and ascending alternately.
- the pipe (T) may repeat meandering in the downward direction and the upward direction.
- the tube (T) may be a tube wound in a coil shape.
- the tube (T) may have a structure in which a plurality of linear tubes arranged in parallel to the vertical direction are connected in series.
- the cross-sectional area of the inside (flow path) of the tube (T) is preferably large enough to allow bubbles to move inside the tube (T).
- the cross-sectional area inside the tube (T) is preferably 3 cm 2 or more, for example, in the range of 3 cm 2 to 10 cm 2 or in the range of 5 cm 2 to 30 cm 2 .
- the inside of the pipe (T) where the aqueous liquid (A) moving from the first tank to the downstream side of the pipe (T) moves upward is made hydrophilic, and the pipe (T The inside of the tube (T) where the aqueous liquid (A) moving downstream of T) moves downward may be water repellent.
- a thin tube may be connected to the end of the tube (T).
- the cross-sectional area of the inside (channel) of the narrow tube is smaller than the cross-sectional area of the inside (channel) of the tube (T).
- the cross-sectional area inside the narrow tube may be in the range of 0.7 cm 2 to 3.5 cm 2 or in the range of 0.5 cm 2 to 1 cm 2 . Since the fluid resistance in the narrow tube is large, even if the pressure in the tank changes suddenly, the water level gradually changes until the pressure in the tank reaches equilibrium without greatly changing the water level in the tank. Moreover, rapid movement of the aqueous liquid (A) in the tube (T) can be suppressed by connecting the thin tube to the tube (T).
- the phrase “cross-sectional area of the tube” means a cross-sectional area in a direction perpendicular to the direction of the flow path (the direction in which the aqueous liquid (A) flows).
- the electrolysis step may be performed under the condition that the gas generated on the surface of the second electrode tends to remain in the aqueous liquid (A) as compared with the gas generated on the surface of the first electrode.
- the electrolysis process may be performed in a state where the first tank is open to the atmosphere and the atmosphere does not flow into the second tank.
- the apparatus of the present invention may further include a shielding plate that is movably disposed between the first tank and the second tank. By moving the shielding plate, it is possible to adjust the amount of ions passing through the separator per unit time.
- the electrolysis step is performed in a state where the aqueous liquid (A) in the first tank is not in a liquid-permeable state and the aqueous liquid (A) in the second tank is in a liquid-permeable state.
- the second tank may be connected to a water tank that holds the aqueous liquid (A).
- the aqueous liquid (A) may be circulated between the second tank and the water storage tank.
- a large amount of aqueous liquid (A) can be processed.
- the value of (V2 / V1) mentioned above can be enlarged, As a result, the fluctuation
- the water tank may be a water tank (for example, a bathtub) that is open to the atmosphere.
- the flow path on the downstream side of the second tank may be connected to a bathtub or a shower head.
- the aqueous liquid (A) treated in the second tank is used as water in the bathtub (for example, hot water) or shower water (for example, hot water).
- the flow path may form a circulation path including the bathtub and the second tank.
- hot water may be supplied to the second tank as the aqueous liquid (A) to be treated in the second tank.
- the second tank, the water storage tank, and the path connecting them may constitute a circulation path.
- a valve for releasing the gas existing in the circulation path may be arranged in the circulation path. By opening the valve, the gas generated in the second electrode can be released into the atmosphere. This can prevent the pressure of the gas in the circulation path from becoming too high.
- each processing apparatus has the configuration of the apparatus of the present invention described above. That is, each processing apparatus includes a first tank, a second tank, a first electrode, a second electrode, a separator, and a power source.
- the present invention relates to an apparatus and a method for producing an aqueous liquid in which ORP and pH are in a predetermined range.
- water such as tap water (specifically, water having an ORP in the range of 200 mV to 780 mV and a pH in the range of 5.8 to 8.6) is treated.
- water whose ORP is 200 mV or more higher than that before the treatment, and whose pH change before and after the treatment is 2 or less, or water whose ORP is 200 mV or more lower than that before the treatment, and whose pH change before and after the treatment is 2 or less. Is possible.
- the configuration of the apparatus 100 of the first embodiment is schematically shown in FIG.
- the apparatus 100 includes a container 10, a separator 13, a first electrode 21, a second electrode 22, and a power source 23.
- the apparatus 100 may include a controller.
- the container 10 is divided into a first tank 11 and a second tank 12 by a separator 13.
- a flow path 14 a and a flow path 14 b are connected to the second tank 12.
- the flow path 14 a, the flow path 14 b, and the second tank 12 form one flow path 14.
- the second tank 12 has two inlets 12c and outlets 12d.
- the inflow port 12c and the outflow port 12d are connected to the flow paths 14a and 14b by the connection component 12e in a state where the connection can be released.
- illustration of the connection component 12e is omitted.
- the inflow port 12c and the outflow port 12d may be directly connected to the flow path without using connection parts.
- the flow path 14 a is connected to the lower side of the second tank 12
- the flow path 14 b is connected to the upper side of the second tank
- the aqueous liquid 30 is introduced from the flow path 14 a
- the treatment is performed in the second tank 12.
- the aqueous liquid 30 is discharged from the flow path 14b.
- the aqueous liquid 30 flows into the second tank 12 through the inlet 12c, and the aqueous liquid 30 flows out into the flow path 14b through the outlet 12d.
- the aqueous liquid flows upward from below the second tank 12, it is possible to suppress the gas generated on the surface of the second electrode 22 from staying on the surface of the second electrode 22.
- a pump and / or a valve is installed in the flow path 14a and / or the flow path 14b as necessary. Further, in the second tank 12 and / or the flow path 14 (usually, the flow path on the downstream side of the second tank 12), measuring instruments (ORP meter, pH meter, ion concentration meter, conductivity meter, dissolved meter) An oxygen meter, a dissolved hydrogen meter, etc.) may be installed.
- the first tank 11 is opened to the atmosphere by the opening 11a.
- the second tank 12 is cut off from the atmosphere.
- An aqueous liquid 30 is disposed in the tanks 11 and 12. Means for preventing the aqueous liquid 30 from leaking outside from the opening 11a may be provided in the opening 11a.
- a gas-liquid separation membrane may be disposed in the opening 11a. A well-known thing can be used for a gas-liquid separation membrane.
- drainage channels 15 and 16 may be connected to the tank 11 and the tank 12, respectively.
- a valve 15a and a valve 16a are provided in each of the drainage passages 15 and 16.
- the aqueous liquid 30 in the tank 11 can be discharged by opening the valve 15a.
- the aqueous liquid 30 in the tank 12 can be discharged by opening the valve 16a.
- the pH of the aqueous liquid 30 can be adjusted by discharging the aqueous liquid 30 in the tank 11 or the aqueous liquid 30 in the tank 12.
- the apparatus of the present invention may include a water tank 24.
- the 2nd tank 12 and the water storage tank 24 are connected by the flow path 14a and the flow path 14b.
- the 2nd tank 12, the water storage tank 24, the flow path 14a, and the flow path 14b form one circulation path.
- the aqueous liquid 30 in the water storage tank 24 is sent to the second tank 12 by a pump (not shown) disposed in the flow path 14a and / or the flow path 14b, and is returned to the water storage tank 24 after being processed. That is, the aqueous liquid 30 circulates in the circulation path including the second tank 12 and the water storage tank 24. This circuit is isolated from the atmosphere.
- the water storage tank 24 is provided with a valve 24a.
- valve 24a When the pressure of the gas in the water storage tank 24 becomes too high, the valve 24a may be opened. Thereby, the pressure of the gas in the water storage tank 24 can be lowered without causing the air to flow into the water storage tank 24. It is also possible to replace the water tank 24 with a bathtub. In this case, the aqueous liquid 30 in the bathtub is opened to the atmosphere.
- the electrodes 21 and 22 are immersed in the liquid 30.
- the electrolysis process is performed in a state where the aqueous liquid 30 is continuously supplied from the flow path 14a and the aqueous liquid 30 is continuously discharged from the flow path 14b. That is, in the electrolysis process, the aqueous liquid 30 in the second tank 12 is in a liquid-permeable state, while the aqueous liquid 30 in the first tank 11 is not in a liquid-permeable state.
- the aqueous liquid 30 in the tanks 11 and 12 and the ions (cations and anions) contained therein can pass through the separator 13.
- a voltage is applied between the first electrode 21 and the second electrode 22 so that the first electrode 21 becomes an anode.
- oxygen gas and hydrogen ions are generated on the surface of the first electrode 21 (anode)
- hydrogen gas and hydroxide ions are generated on the surface of the second electrode 22 (cathode). Will occur.
- the separator 13 blocks gas (bubbles). That is, the separator 13 suppresses the gas generated on the surface of the electrode from moving between the tank 11 and the tank 12. Oxygen gas generated in the first electrode 21 is released into the atmosphere from the opening 11a.
- a voltage is applied between the first electrode 21 and the second electrode 22 so that the first electrode 21 becomes a cathode. Apply.
- hydrogen gas and hydroxide ions are generated on the surface of the first electrode 21 (cathode), and oxygen gas and hydrogen ions are generated on the surface of the second electrode 22 (anode). Occurs.
- the separator 13 suppresses the gas generated on the surface of the electrode from moving between the tank 11 and the tank 12. The hydrogen gas generated at the first electrode 21 is released into the atmosphere from the opening 11a.
- emitted from the flow path 14b increases.
- an aqueous liquid 30 having a high ORP is obtained.
- the pH of the aqueous liquid 30 treated in the second tank 12 depends on the amount of hydrogen ions and hydroxide ions generated per unit time by the electrolysis reaction (hydrogen ions and hydroxide ions per unit time by the electrolysis reaction). Change amount), the amount of ions passing through the separator per unit time, and the volume (volume V2) of the aqueous liquid processed in the second tank 12. As the current flowing between the electrodes (the amount of charge flowing between the electrodes per unit time) increases, the amount of hydrogen ions and hydroxide ions generated per unit time increases. Therefore, the pH of the aqueous liquid 30 treated in the second tank 12 is adjusted by changing the ratio between the current flowing between the electrode 21 and the electrode 22 and the amount of ions passing through the separator per unit time.
- the current flowing between the electrodes 21 and 22 can be changed, for example, by changing the voltage applied between the electrodes.
- the amount of hydrogen ions and hydroxide ions passing through the separator per unit time can be changed by the value of (volume V2) / (volume V1), the distance between the electrode and the separator, the area of the separator, and the like.
- the value of the volume V ⁇ b> 2 can be changed by changing the amount of the aqueous liquid 30 disposed in the water tank 24.
- the aqueous liquid 30 in the first tank 11 When the aqueous liquid 30 in the first tank 11 is discharged from the drainage path 15, the amount of hydrogen ions or hydroxide ions moving from the first tank 11 to the second tank 12 is reduced. Therefore, when it is desired to increase the change in pH in the second tank 12, the aqueous liquid 30 in the first tank 11 may be discharged. The aqueous liquid 30 in the first tank 11 is replenished from the second tank 12 via the separator 13.
- the amount of ions that pass through the separator per unit time may be changed by changing the area through which ions can pass using a shielding plate.
- An example of an apparatus including a shielding plate is shown in FIG. 5A.
- the shielding plate 51 of the device 100a is movable in parallel with the separator 13.
- the shielding plate 51 is placed at a position where the separator 13 is not shielded or hardly shielded as shown in FIG. 5A.
- the shielding plate 51 is placed at a position where a part of the separator 13 is shielded, as shown in FIG. 5B.
- the pH of the aqueous liquid 30 treated in the second tank 12 changes the ratio between the amount of the aqueous liquid 30 in the first tank 11 and the amount of the aqueous liquid 30 treated in the second tank 12. It is also possible to adjust by.
- water having a pH of 7 is electrolyzed by applying a voltage between the first electrode 21 and the second electrode 22 so that the first electrode 21 becomes an anode. think of.
- reactions other than the above formulas (1) and (2) do not occur.
- no ions pass through the separator 13.
- the pH of the water in the first tank 11 is uniform, and the pH of the water treated in the second tank 12 (that is, the water in the circulation path including the second tank 12 and the water storage tank 24) is also set. Assume uniform. In this case, the water in the first tank 11 becomes acidic due to an increase in hydrogen ions due to the reaction of the formula (1).
- the water in the second tank 12 becomes alkaline due to an increase in hydroxide ions due to the reaction of the formula (2).
- the amount of hydrogen ions increased in the first tank 11 and the amount of hydroxide ions increased in the second tank 12 are the same. Therefore, when the amount of water treated in the second tank 12 is the same as the amount of water in the first tank 11, the amount of change in the pH of the water in the first tank 11 and the second The amount of change in pH of the water treated in the tank 12 becomes equal. For example, when the water in the first tank 11 changes from pH 7 to 4, the water in the second tank 12 changes from pH 7 to 10. On the other hand, when the amount of water to be treated in the second tank 12 is 1000 times the amount of water in the first tank 11, even if the water in the first tank 11 changes from pH 7 to 4, The pH of the water in the second tank 12 is 8 or less.
- Embodiment 2 In Embodiment 2, another example of the apparatus of the present invention will be described.
- the apparatus 200 according to the second embodiment is different from the apparatus 100 according to the first embodiment only in that the apparatus 200 includes the tube 210 and the thin tube 220, and therefore, a duplicate description is omitted.
- the configuration of the apparatus 200 is schematically shown in FIG.
- the device 200 includes a tube 210 and a thin tube 220 connected to the first tank 11 in addition to the device 100.
- the pipe 210 is connected above the first tank 11.
- the pipe 210 includes a plurality of linear pipes 210a and 210b arranged substantially parallel to the vertical direction, and a pipe 210c connecting them in series.
- the pipe 210 repeats meandering in the downward direction and the upward direction.
- the tube 210 is preferably thick enough to allow bubbles to move inside when the interior is filled with the aqueous liquid 30.
- the inner surface of the tube 210a is water repellent and the inner surface of the tube 210b is hydrophilic.
- the inner surface of the tube 210a is water repellent
- the inner surface of the tube 210b is hydrophilic
- the inner diameter of the tube 210 is in an appropriate range.
- a state is considered in which the collected aqueous liquid (A) having a certain volume moves in the tube (T).
- the inner surface of the tube 210a is water-repellent, so the aqueous liquid (A) moves in a state that occupies the entire cross section of the tube 210a. It is suppressed.
- the gas generated in the first tank moves upward (downstream) in the portion of the tube 210b, since the inner surface of the tube 210b is hydrophilic, the gas moves while occupying the entire cross section of the tube 210b. Is suppressed. Therefore, as the gas moves, the aqueous liquid (A) above the gas descends inside the tube 210b. As a result, the gas generated in the first tank can be discharged from the pipe 210 while minimizing the movement of the aqueous liquid (A) to the downstream side.
- a narrow tube 220 is connected to the end of the tube 210.
- the thin tube 220 has an internal cross-sectional area smaller than the internal cross-sectional area of the tube 210. Since the fluid resistance inside the narrow tube 220 is large, rapid movement of the aqueous liquid 30 in the tube 210 is suppressed. Note that the thin tube 220 may be omitted, or a material having a high fluid resistance (for example, porous) may be used instead of the thin tube 220. Moreover, you may arrange
- a drain valve may be formed in the pipe 210c that connects the lower side of the pipe 210a and the lower side of the pipe 210b.
- the aqueous liquid 30 existing in the pipe 210 can be discharged periodically by the drain valve. This can suppress deterioration of the water quality of the aqueous liquid 30 in the pipe 210.
- the aqueous liquid 30 in the first tank 11 When the pressure in the first tank 11 increases, the aqueous liquid 30 in the first tank 11 is pushed into the pipe 210 and moves in the pipe 210.
- the tube 210a When the tube 210a is sufficiently thick, the aqueous liquid 30 falls in the tube 210a, while the gas below the tube 210a rises. Therefore, the siphon effect does not occur when the aqueous liquid 30 falls on the tube 210a.
- the aqueous liquid 30 in the tube 210 stops at a position where the pressure is balanced. An example in that case is shown in FIG.
- the aqueous liquid 30 in the tube 210a is pushed down by the pressure in the first tank 11, and the tube 210a is filled with air.
- some of the plurality of tubes 210 b are filled with the aqueous liquid 30.
- the tube 210 may be wound in a coil shape (for example, an elliptical shape). Further, the tube 210 may extend linearly on the first tank 11. However, the apparatus can be miniaturized by using a tube that alternates between descending and ascending alternately.
- the apparatus of the present invention may be connected to an open water tank (for example, a bathtub).
- an open water tank for example, a bathtub.
- An example in that case is schematically shown in FIG. 8, and another example is schematically shown in FIG. 8 and 9, only the first and second tanks 11 and 12 of the apparatus of the present invention are shown, but the other parts are the above-described configurations (for example, the configurations described in the first and second embodiments). ) Can be applied.
- the flow path 81 including the second tank 12 of the apparatus of the present invention is connected to the bathtub 82.
- the aqueous liquid processed in the second tank 12 is poured into the bathtub 82.
- the flow path 81 does not form a circulation path.
- a pump 83 for moving the aqueous liquid is disposed on the flow path 81. In order to prevent sudden pressure fluctuations in the tank, it is preferable to start the pump 83 at a low speed.
- the aqueous liquid treated in the second tank 12 may be used as shower water or hot water.
- the flow path 81 and the bathtub 82 form a circulation path.
- the second tank 12 constitutes a part of the flow path 81.
- the aqueous liquid processed in the second tank 12 is poured into the bathtub 82, and the aqueous liquid in the bathtub 82 is introduced into the second tank 12 and processed.
- a pump 83 and a filter 84 are disposed on the flow path 81. The filter 84 prevents dust in the bathtub 82 from being introduced into the pump 83.
- the apparatus of the present invention has a mechanism for preventing hydrogen gas from accumulating in a certain space, a mechanism for safely burning hydrogen gas generated by electrolysis, and an atmosphere after diluting the hydrogen gas to a concentration that does not ignite spontaneously.
- a mechanism for releasing the battery may be provided.
- An example having such a mechanism is shown in FIG.
- the 2nd tank 12 of the apparatus 100b of FIG. 13 is connected to the water storage tank 24 provided with an exhaust means. Since the apparatus 100b can have the same configuration as the apparatus 100 shown in FIG. 2 except that a part of the water storage tank 24 is different, description and illustration of overlapping parts may be omitted.
- the second tank 12 of the apparatus 100b is connected to the water storage tank 24 by a flow path 14b.
- the aqueous liquid 30 processed in the second tank 12 is stored in the water storage tank 24 through the flow path 14b.
- the aqueous liquid 30 stored in the water storage tank 24 is taken out from the flow path 24c and used.
- Various devices are installed in the channels (channel 14a, channel 14b, and channel 24c) as necessary.
- the flow path 14a may be connected to the water storage tank 24 so as to constitute a circulation path.
- the flow path 24c may be connected to another water storage tank. In that case, the flow path 14a may be connected to the other water storage tank to constitute a circulation path.
- An exhaust pipe 24 b is provided above the water storage tank 24.
- the exhaust pipe 24 b suppresses air from flowing into the water storage tank 24.
- the pressure of the gas existing in the upper space in the water storage tank 24 becomes higher than the atmospheric pressure, the gas in the water storage tank 24 is released into the atmosphere through the exhaust pipe 24.
- the exhaust pipe 24b suppresses air from flowing into the water storage tank 24 at least during electrolysis.
- the exhaust pipe 24b may be narrowed, for example, the tip of the exhaust pipe 24b may be narrowed.
- a valve that opens only when the pressure of the gas in the water storage tank 24 becomes higher than the atmospheric pressure is provided at the tip or middle of the exhaust pipe 24b. It may be provided.
- the aqueous liquid 30 treated with the second electrode 22 contains hydrogen gas. Therefore, hydrogen gas is stored in the upper part of the water storage tank 24.
- the exhaust pipe 24b prevents air from flowing into the water storage tank 24. Therefore, the upper part in the water storage tank 24 is maintained in a state where the hydrogen gas concentration is high. As long as the hydrogen gas concentration in the upper part of the water storage tank 24 is high, the dissolved hydrogen concentration of the aqueous liquid 30 in the water storage tank 24 can be increased. Therefore, it is possible to suppress the ORP of the aqueous liquid 30 from rising in the water storage tank 24.
- the exhaust pipe 24b may be formed of a non-combustible material (for example, metal), and the tip of the exhaust pipe 24b may be narrowed. According to this configuration, even if the hydrogen gas released from the exhaust pipe 24b is spontaneously ignited when mixed with the atmosphere, the hydrogen gas can be safely burned.
- the apparatus of the present invention may have a mechanism for reducing the concentration of hydrogen gas released from the exhaust pipe 24b to a concentration that does not spontaneously ignite.
- an apparatus (blower) for forcibly blowing a large amount of air toward the downstream side (atmosphere side) of the exhaust pipe 24b may be connected in the middle of the exhaust pipe 24b. In that case, in order to prevent the air sent from the blower from flowing into the water storage tank 24, the exhaust pipe 24b between the connection part of the blower and the water storage tank 24 is directed downstream (atmosphere side).
- a valve that only opens may be provided.
- the present invention relates to a method for changing the oxidation-reduction potential of an aqueous liquid flowing in a flow path, which includes steps (I) and (II).
- steps (I) and (II) the first and second electrodes respectively disposed in the first and second tanks partitioned by the separator are immersed in the aqueous liquid (A).
- water in the aqueous liquid (A) is electrolyzed by applying a voltage between the first electrode and the second electrode.
- the amount (volume V2) of the aqueous liquid (A) treated in the second tank is 10 times the amount (volume V1) of the aqueous liquid (A) treated in the first tank.
- An apparatus for carrying out this method is an apparatus for changing the oxidation-reduction potential of the aqueous liquid (A), the container in which the aqueous liquid (A) is disposed, the container in the first tank and the second tank.
- a power supply for applying is 10 of the quantity (volume V1) of the aqueous liquid (A) processed by the 1st tank. It is more than double.
- This embodiment includes the above-described embodiment of the present invention in which the volume V2 is 10 times or more the volume V1. Further, this embodiment includes an embodiment shown in FIG. Moreover, the embodiment whose volume V2 is 10 times or more of the volume V1 among embodiments shown in FIG. 11 described later is included. Since the description of the volume V1 and the volume V2 and the approximation thereof have been described above, redundant description will be omitted.
- the present invention is a method for changing the oxidation-reduction potential of an aqueous liquid flowing in a flow path, which includes steps (I) and (II), and in step (II), the first tank
- steps (I) and (II) and in step (II), the first tank
- This relates to a method in which the ratio of the amount (volume V1) of the aqueous liquid (A) to be treated with the amount (volume V2) of the aqueous liquid (A) to be treated in the second tank is variable.
- An apparatus for carrying out this method is an apparatus for changing the oxidation-reduction potential of the aqueous liquid (A), the container in which the aqueous liquid (A) is disposed, the container in the first tank and the second tank.
- the structure for making variable the quantity (volume V1) of the aqueous liquid (A) processed by a 1st tank, and the quantity (volume V2) of the aqueous liquid (A) processed by a 2nd tank. Is provided.
- a flow path connected to the first tank and a flow path connected to the second tank are provided.
- This embodiment includes an embodiment shown in FIG. 11 described later.
- a side wall parallel to the flat electrode may be movable. Since the description of the volume V1 and the volume V2 and the approximation thereof have been described above, redundant description will be omitted.
- the volume V2 may be in a range of 10 times to 2 ⁇ 10 6 times the volume V1 (for example, a range of 10 times to 50000 times or a range of 200 times to 15000 times).
- the apparatus 300 can have the same configuration as the apparatus 100 or a variation thereof (for example, the apparatus 100a or the apparatus 200), but FIG. 10 shows the simplest configuration.
- the apparatus 300 includes a container 10 (first tank 11 and second tank 12), a separator 13, a first electrode 21, a second electrode 22, and a power source 23.
- the container 10 is partitioned into a first tank 11 and a second tank 12 by a separator 13 and a partition wall 301 that does not allow liquid and gas to pass through.
- the first tank 11 and the second tank 12 are provided with openings 11a and 12a, respectively. Each of the openings 11a and 12a may include a valve.
- the aqueous liquid 30 disposed in the container 10 is processed in a batch manner. That is, while the aqueous liquid 30 disposed in the container 10 is electrolyzed, the aqueous liquid 30 disposed in the first tank 11 and the second tank 12 does not substantially move. When the electrolysis is completed, the aqueous liquid 30 in the first tank 11 and / or the aqueous liquid 30 disposed in the second tank 12 is removed from the tank for use.
- a voltage is applied between the first electrode 21 and the second electrode 22 so that the first electrode 21 becomes an anode (the second electrode 22 becomes a cathode).
- the aqueous liquid 30 in the first tank 11 has an ORP rise and a pH drop.
- the aqueous liquid in the second tank 12 has a lower ORP and a higher pH.
- Part of the hydrogen ions generated by the first electrode 21 diffuses into the second tank 12 through the separator 13.
- part of the hydroxide ions generated at the second electrode 22 diffuses into the first tank 11 through the separator 13.
- the pH of the aqueous liquid 30 in the first tank 11 depends on the amount of hydrogen ions generated by the first electrode 21, the amount of hydrogen ions and hydroxide ions that permeate the separator 13, and the first It depends on the amount of the aqueous liquid 30 in the tank 11.
- the pH of the aqueous liquid 30 in the second tank 12 is such that the amount of hydroxide ions generated by the second electrode 21, the amount of hydrogen ions and hydroxide ions permeating the separator 13, and the second It depends on the amount of the aqueous liquid 30 in the second tank 12.
- a general voltage is applied between the first electrode 21 and the second electrode 22 so that the first electrode 21 becomes a cathode (so that the second electrode 22 becomes an anode).
- electrolyzing water for example, tap water
- the apparatus 300 it is possible to control the change in pH when changing the ORP of the aqueous liquid.
- the apparatus 400 shown in FIG. 11 is different from the apparatus 100 in that the first tank 11 constitutes a part of the flow path 401 of the aqueous liquid 30. Except for this point, the apparatus 400 can have the same configuration as the apparatus 100 or a variation thereof (for example, the apparatus 100a or the apparatus 200).
- FIG. 11 shows an example configuration.
- the first tank 11 of the device 400 includes two connection parts (an inlet and an outlet) for connecting to the flow path 401.
- connection parts an inlet and an outlet
- connection parts for connecting to the flow path 401.
- the structure demonstrated about the 2nd tank 12 is employable.
- illustration of connection parts is omitted.
- the 1st tank may be directly connected to the flow path, without using a connection component.
- the first tank 11 constitutes a part of the flow path 401 of the aqueous liquid 30, and the second tank 12 constitutes a part of the flow path 14 of the aqueous liquid 30.
- the aqueous liquid 30 flowing through the flow path 401 does not move to the flow path 14 unless it passes through the separator 13.
- the aqueous liquid 30 flowing through the flow path 14 does not move to the flow path 401 unless it passes through the separator 13.
- the volume V1 of the aqueous liquid (A) processed in the first tank 11 can be changed.
- the volume V2 of the aqueous liquid (A) processed by the 2nd tank 12 can be changed by moving the aqueous liquid 30 in the 2nd tank 12 with the flow path 14.
- FIG. 1 As described above, by increasing the ratio of (volume V2) / (volume V1), it is possible to suppress a change in pH of the aqueous liquid 30 processed in the second tank 12. Moreover, the change in pH of the aqueous liquid 30 processed in the second tank 12 can be suppressed by increasing the volume V2.
- the change in pH of the aqueous liquid 30 treated in the second tank 12 can be increased.
- the change of pH of the aqueous liquid 30 processed by the 2nd tank 12 can be increased by making the volume V2 small.
- the change in pH of the aqueous liquid 30 treated in the first tank 11 can also be adjusted by the same principle.
- the ORP of the aqueous liquid 30 can be changed, and the change in pH can be easily adjusted.
- the ORP of the aqueous liquid 30 decreases and the pH increases, but the degree of the increase in pH can be reduced or increased.
- the ORP of the aqueous liquid 30 increases and the pH decreases, but the degree of the decrease in pH can be reduced or increased.
- the volume V1 and the volume V2 can be changed by changing the amount of the aqueous liquid 30 flowing through the flow path 401 and the flow path 14 per unit time, respectively. Specifically, the volumes V1 and V2 can be changed by changing the driving conditions of the pumps provided in the flow paths 401 and 14, respectively. Further, a flow rate control device may be provided in each of the flow path 401 and the flow path 14, and the volumes V1 and V2 may be changed accordingly.
- an aqueous liquid 30 having a low ORP and a neutral pH by electrolyzing general water (for example, tap water).
- general water for example, tap water
- the ORP is 0 mV or less (eg, in the range of ⁇ 800 mV to 0 mV or ⁇ 500 mV to 0 mV)
- an aqueous liquid 30 having a pH of 10 or less for example, in the range of 6 to 10 or 7 to 9).
- the ORP is 600 mV or more (for example, in the range of 600 to 1100 mV or 600 to 900 mV). It is possible to obtain an aqueous liquid 30 having a pH of 3 or more (for example, in the range of 3-8 or 4-8).
- Example 11 the temperature of the liquid processed in the following Examples was in the range of about 10 to 25 ° C.
- Example 1 In Example 1, the ORP of tap water was increased.
- the apparatus shown in FIG. 2 was used as the apparatus. However, the experiment was conducted in a state where the upper side of the tank 24 was open to the atmosphere.
- the internal volumes of the first tank 11 and the second tank 12 were each about 3 cm 3 .
- the amount of tap water (the amount of liquid processed in the second tank 12) disposed in the water storage tank 24 was about 1 liter (1 L).
- FIG. 12A shows a front view of the first electrode 21 used in Example 1.
- the first electrode 21 includes a plurality of linear electrodes 21a arranged in a stripe shape and a linear electrode 21b connecting them.
- the linear electrode 21a is arranged in the vertical direction. As a result, the gas generated on the surface of the electrode 21a is suppressed from staying on the surface of the electrode 21a.
- the first electrode 21 is made of titanium coated with platinum.
- the second electrode 22 used in Example 1 is the same electrode as the first electrode 21. A cotton cloth was used for the separator 13.
- FIG. 12B shows a front view when the separator 13 is viewed from the first electrode 21 side.
- the second electrode 22 is disposed so as to face the first electrode 21 with the separator 13 interposed therebetween.
- the treated tap water had a pH of 7.52, an ORP of 422 mV, and a conductivity of 165.5 ⁇ S / cm.
- the tap water was electrolyzed while circulating the tap water in a circulation path including the second tank 12 and the water storage tank 24. Specifically, a voltage was applied between the first electrode 21 and the second electrode 22 so that the first electrode 21 became a cathode. The voltage was 19V.
- Table 1 shows changes in physical properties of tap water in the water tank 24 due to voltage application. In the table below, “-” indicates that measurement was not performed.
- Example 1 As shown in Table 1, in Example 1, the ORP of tap water could be increased. Moreover, in Example 1, pH fell.
- Example 2 In Example 2, the ORP of the KCl aqueous solution was increased.
- the KCl aqueous solution was treated under the same conditions as in Example 1 except that the KCl aqueous solution was treated instead of tap water.
- the amount of the KCl aqueous solution placed in the first tank 11 was about 3 cm 3 .
- the amount of the KCl aqueous solution disposed in the water storage tank 24 was about 1 liter.
- the treated KCl aqueous solution (concentration: 0.01 wt%) had a pH of 7.26, an ORP of 458 mV, and a conductivity of 365 ⁇ S / cm.
- Table 1 shows changes in physical properties of the KCl aqueous solution in the water storage tank 24 due to voltage application.
- Example 2 the ORP of the KCl aqueous solution could be increased to 1000 mV or more. Moreover, in Example 2, pH fell. Further, when the KCl aqueous solution treated in Example 2 was diluted 100 times with tap water, oxidized water having an ORP of 750 mV and a pH of 4.9 was obtained. Thus, changes in ORP and pH due to dilution of the treated aqueous KCl solution were relatively small.
- Example 3 In Example 3, the ORP of tap water was reduced. In Example 3, tap water was treated under the same conditions as in Example 1 except that the magnitude of the voltage and the direction in which the voltage was applied were different.
- Example 3 The tap water treated in Example 3 had a pH of 7.41, an ORP of 501 mV, and a conductivity of 166.7 ⁇ S / cm.
- the tap water was electrolyzed by applying a voltage between the first electrode 21 and the second electrode 22 so that the first electrode became an anode. The voltage was 19 volts. Table 3 shows changes in physical properties of tap water in the water tank 24 due to voltage application.
- Example 3 As shown in Table 3, in Example 3, the ORP of tap water was reduced to ⁇ 600 mV. Moreover, in Example 3, pH rose.
- Example 4 tap water was treated so that the change in pH was small and the ORP was lowered.
- the amount of liquid disposed in the water storage tank 24 was about 40 liters, and tap water was treated under the same conditions as in Example 1 except for the magnitude of the voltage and the application direction.
- the value of (V2 / V1) is about 13000.
- the treated tap water had a pH of 7.19, an ORP of 410 mV, and a conductivity of 207.0 ⁇ S / cm.
- the tap water was electrolyzed while circulating the tap water in a circulation path including the second tank 12 and the water storage tank 24. Specifically, a voltage was applied between the first electrode 21 and the second electrode 22 so that the first electrode became an anode. The voltage was applied so that a current of 0.35 A flows between the electrodes.
- Table 4 shows changes in physical properties of tap water in the water tank 24 due to voltage application.
- Example 4 the change in pH could be suppressed while lowering the ORP of tap water.
- Example 5 tap water was treated so that the change in pH was small and the ORP was lowered. In Example 5, tap water was treated under the same conditions as in Example 4 except that the applied voltage was different.
- the treated tap water had a pH of 7.52, an ORP of 434 mV, and a conductivity of 168.3 ⁇ S / cm.
- the tap water was electrolyzed while circulating the tap water in a circulation path including the second tank 12 and the water storage tank 24. Specifically, a voltage was applied between the first electrode 21 and the second electrode 22 so that the first electrode became an anode. The voltage was applied so that a current of 2.8 A flows between the electrodes. The voltage at that time was about 30 volts. Table 5 shows changes in physical properties of tap water in the water storage tank 24 due to voltage application.
- Example 5 the change in pH could be suppressed while lowering the ORP of tap water. Further, the amount of decrease in ORP could be increased as compared with Example 4 by increasing the current flowing between the electrodes.
- Example 6 In Example 6, the ORP of the alkaline aqueous solution was reduced. In Example 6, an experiment was performed using the same apparatus as in Example 1. However, the amount of liquid disposed in the water storage tank 24 was about 50 liters.
- the aqueous solution was electrolyzed while circulating an alkaline aqueous solution having a pH of 11.06 and an ORP of 49 mV in a circulation path including the second tank 12 and the water storage tank 24. Specifically, a voltage was applied between the first electrode 21 and the second electrode 22 so that the first electrode became an anode. The voltage was applied so that a current of 2.8 A flows between the electrodes. Table 6 shows changes in physical properties of the aqueous solution in the water storage tank 24 due to voltage application.
- Example 6 As shown in Table 6, in Example 6, the ORP of the alkaline aqueous solution could be reduced without greatly changing the pH.
- Example 7 In Example 7, the ORP of the acidic aqueous solution was reduced. In Example 7, an experiment was performed using the same apparatus as in Example 1. However, the amount of liquid disposed in the water storage tank 24 was about 10 liters.
- the aqueous solution was electrolyzed while circulating an acidic aqueous solution having a pH of 3.09 and an ORP of 332 mV in a circulation path including the second tank 12 and the water storage tank 24. Specifically, a voltage was applied between the first electrode 21 and the second electrode 22 so that the first electrode became an anode. The voltage was applied so that a current of 2.8 A flows between the electrodes. Table 7 shows changes in physical properties of the aqueous solution in the water storage tank 24 due to voltage application.
- Example 7 As shown in Table 7, in Example 7, the ORP of the acidic aqueous solution could be reduced without greatly changing the pH.
- Example 8 In Example 8, an experiment was performed to return the ORP of the acidic aqueous solution with a reduced ORP to 1000 mV or more. First, an acidic aqueous solution having a pH of 3.09 and an ORP of 332 mV was prepared by leaving an aqueous solution having a pH of about 3 and an ORP of 1000 mV or more for 1 month. Next, the experiment which makes ORP 1000 mV or more was performed by processing the acidic aqueous solution on the same conditions as Example 2. Table 8 shows changes in the ORP of the KCl aqueous solution in the water tank 24.
- the ORP could be increased to 1000 mV or more by treating the KCl aqueous solution with a reduced ORP.
- Example 9 the ORP of the aqueous liquid in the open state was changed in the circulation mode shown in FIG.
- the apparatus shown in FIG. 1 was used as an apparatus for changing the ORP. Specifically, the ORP of 100 liters of tap water placed in an open container was changed. The internal volume of the first tank 11 was 4 cm 3 , and the internal volume of the second tank 12 was 4 cm 3 . A cylindrical tube extending in the vertical direction was connected to the opening 11a of the first tank 11 of the apparatus used in Example 9, and its internal volume was 53 cm 3 . A constant current of 1.0 A was passed between the electrodes. At this time, the voltage applied between the electrodes was about 40V. The aqueous liquid was passed through the second tank 12 at a flow rate of about 1.7 L / min. The results at this time are shown in Table 9.
- the ORP could be reduced by applying a voltage between the electrodes. Moreover, pH hardly changed. The change in ORP after the voltage application was stopped was gradual. When an aqueous solution in which NaHCO 3 , Na 2 SO 4 and the like were dissolved instead of tap water was used as the aqueous liquid, the change in ORP after the voltage application was stopped was more gradual.
- Example 10 In Example 10, the ORP of the aqueous liquid in the open state was changed with the apparatus shown in FIG. The apparatus shown in FIG. 1 was used as an apparatus for changing the ORP. In Example 10, the ORP of tap water was changed. The ORP of tap water before treatment was about 250 mV. The internal volume of the first tank 11 was 4 cm 3 , and the internal volume of the second tank 12 was 4 cm 3 . A voltage was applied between the first electrode 21 and the second electrode 22 so that the first electrode 21 became an anode. A constant current of 2.0 A was passed between the electrodes. The aqueous liquid was passed through the second tank 12 at a flow rate of about 0.8 L / min. A steady state was reached in about 10 minutes from the start of the experiment.
- the tap water after being treated in the second tank 12 had an ORP of about ⁇ 300 mV, a dissolved hydrogen concentration of about 750 ppb, and a pH of about 8.
- ORP ORP of about ⁇ 300 mV
- a dissolved hydrogen concentration of about 750 ppb a dissolved hydrogen concentration of about 750 ppb
- pH a pH of about 8.
- the change of ORP and the change of dissolved hydrogen concentration became large.
- the same experiment was performed by changing the value of the current flowing between the electrodes and the flow rate of the aqueous liquid flowing in the second tank. Specifically, the current value flowing between the electrodes was set to 2A or 3A. The flow rate of the aqueous liquid flowing through the second tank was changed between 0.4 and 4.6 L / min. And 30 minutes after the experiment start, ORP of the aqueous liquid processed from the 2nd tank was measured. The results are shown in Table 10.
- Example 11 In Example 11, the hot water arranged in the bathtub was processed with the apparatus shown in FIG. A voltage was applied between the first electrode 21 and the second electrode 22 so that the first electrode 21 became an anode. Hot water placed in the bathtub was 180 L at 41 ° C. Since the volume of the 2nd tank 12 and a flow path is small, the quantity of the hot water which exists in the circulation path containing the 2nd tank 12 can be regarded as 180L substantially. On the other hand, the internal volume of the first tank 11 (the amount of hot water treated in the first tank) was about 4 cm 3 . A constant current of 6 A was passed between the electrodes.
- hot water hot water obtained by heating tap water to 41 ° C as it is, or hot water obtained by heating salt water (such as NaHCO 3 or Na 2 SO 4 ) dissolved to 41 ° C, is used. Using. The results of measuring ORP are shown in Table 11.
- the treatment of the present invention changed both the ORP of tap water and the ORP of tap water in which salt was dissolved.
- the present invention can be used in a method and apparatus for changing the ORP of an aqueous liquid.
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Abstract
Description
以下に、流路を流れる水性液体のORPを変化させるための本発明の方法について説明する。本発明の方法によれば、ORPを低下させることおよびORPを高めることのいずれもが可能である。 [Method of changing ORP of aqueous liquid]
Below, the method of this invention for changing ORP of the aqueous liquid which flows through a flow path is demonstrated. According to the method of the present invention, it is possible to reduce ORP and increase ORP.
(カソード)4H2O+4e-→4OH-+2H2 ・・・(2) (Anode) 2H 2 O → 4H + + O 2 + 4e − (1)
(Cathode) 4H 2 O + 4e − → 4OH − + 2H 2 (2)
(カソード)4H++4e-→2H2 ・・・(4) (Anode) 4OH − → 2H 2 O + O 2 + 4e − (3)
(Cathode) 4H + + 4e − → 2H 2 (4)
流路を流れる水性液体のORPを変化させるための本発明の装置を以下に説明する。本発明の装置によれば、本発明の方法を容易に実施できる。なお、本発明の方法について説明した事項については本発明の装置に適用できるため、重複する説明を省略する場合がある。また、本発明の装置について説明した事項は、本発明の方法に適用できる。 [Apparatus for changing ORP of aqueous liquid]
The apparatus of the present invention for changing the ORP of the aqueous liquid flowing in the flow path will be described below. According to the apparatus of the present invention, the method of the present invention can be easily implemented. In addition, since the matter which demonstrated the method of this invention is applicable to the apparatus of this invention, the overlapping description may be abbreviate | omitted. Further, the matters described for the apparatus of the present invention can be applied to the method of the present invention.
実施形態1の装置および方法の一例について、以下に説明する。実施形態1の装置100の構成を図1に模式的に示す。装置100は、容器10、セパレータ13、第1の電極21、第2の電極22、および電源23を含む。装置100は、コントローラを備えてもよい。 [Embodiment 1]
An example of the apparatus and method of
実施形態2では、本発明の装置の別の一例について説明する。実施形態2の装置200は、管210および細管220を備える点のみが実施形態1の装置100と異なるため、重複する説明は省略する。 [Embodiment 2]
In
また、別の観点では、本発明は、流路を流れる水性液体の酸化還元電位を変化させる方法であって、工程(I)および(II)を含む方法に関する。工程(I)では、セパレータによって仕切られた第1および第2の槽にそれぞれ配置された第1および第2の電極を、水性液体(A)に浸漬する。工程(II)では、第1の電極と第2の電極との間に電圧を印加することによって、水性液体中(A)の水を電気分解する。この工程(II)において、第2の槽で処理される水性液体(A)の量(体積V2)が、第1の槽で処理される水性液体(A)の量(体積V1)の10倍以上である。この方法を実施するための装置は、水性液体(A)の酸化還元電位を変化させる装置であって、水性液体(A)が配置される容器と、当該容器を第1の槽と第2の槽とに仕切るセパレータと、第1の槽に配置された第1の電極と、第2の槽に配置された第2の電極と、第1の電極と第2の電極との間に電圧を印加するための電源とを備える。そして、1つの実施形態では、第2の槽で処理される水性液体(A)の量(体積V2)が、第1の槽で処理される水性液体(A)の量(体積V1)の10倍以上である。この実施形態には、上述した本発明の実施形態のうち、体積V2が体積V1の10倍以上であるものが含まれる。また、この実施形態には、後述する図10に示す実施形態が含まれる。また、後述する図11に示す実施形態のうち、体積V2が体積V1の10倍以上であるものが含まれる。体積V1および体積V2の説明、ならびにそれらの近似については、上述したため重複する説明は省略する。 [Other methods and apparatuses]
In another aspect, the present invention relates to a method for changing the oxidation-reduction potential of an aqueous liquid flowing in a flow path, which includes steps (I) and (II). In the step (I), the first and second electrodes respectively disposed in the first and second tanks partitioned by the separator are immersed in the aqueous liquid (A). In the step (II), water in the aqueous liquid (A) is electrolyzed by applying a voltage between the first electrode and the second electrode. In this step (II), the amount (volume V2) of the aqueous liquid (A) treated in the second tank is 10 times the amount (volume V1) of the aqueous liquid (A) treated in the first tank. That's it. An apparatus for carrying out this method is an apparatus for changing the oxidation-reduction potential of the aqueous liquid (A), the container in which the aqueous liquid (A) is disposed, the container in the first tank and the second tank. A separator between the tank, the first electrode disposed in the first tank, the second electrode disposed in the second tank, and a voltage between the first electrode and the second electrode. And a power supply for applying. And in one embodiment, the quantity (volume V2) of the aqueous liquid (A) processed by the 2nd tank is 10 of the quantity (volume V1) of the aqueous liquid (A) processed by the 1st tank. It is more than double. This embodiment includes the above-described embodiment of the present invention in which the volume V2 is 10 times or more the volume V1. Further, this embodiment includes an embodiment shown in FIG. Moreover, the embodiment whose volume V2 is 10 times or more of the volume V1 among embodiments shown in FIG. 11 described later is included. Since the description of the volume V1 and the volume V2 and the approximation thereof have been described above, redundant description will be omitted.
実施例1では、水道水のORPを上昇させた。装置には、図2に示す装置を用いた。ただし、槽24の上方が大気に開放されている状態で実験を行った。第1の槽11および第2の槽12の内容積は、それぞれ、約3cm3であった。貯水槽24内に配置される水道水の量(第2の槽12で処理される液体の量)は、約1リットル(1L)とした。 Example 1
In Example 1, the ORP of tap water was increased. The apparatus shown in FIG. 2 was used as the apparatus. However, the experiment was conducted in a state where the upper side of the
実施例2では、KCl水溶液のORPを上昇させた。水道水の代わりにKCl水溶液を処理することを除いて、実施例1と同じ条件でKCl水溶液を処理した。第1の槽11内に配置されるKCl水溶液の量は、約3cm3とした。貯水槽24内に配置されるKCl水溶液の量は、約1リットルとした。 (Example 2)
In Example 2, the ORP of the KCl aqueous solution was increased. The KCl aqueous solution was treated under the same conditions as in Example 1 except that the KCl aqueous solution was treated instead of tap water. The amount of the KCl aqueous solution placed in the
実施例3では、水道水のORPを低下させた。実施例3では、電圧の大きさおよび電圧の印加方向が異なることを除いて、実施例1と同じ条件で水道水を処理した。 (Example 3)
In Example 3, the ORP of tap water was reduced. In Example 3, tap water was treated under the same conditions as in Example 1 except that the magnitude of the voltage and the direction in which the voltage was applied were different.
実施例4では、pHの変化が小さく且つORPが低下するように水道水を処理した。実施例4では、貯水槽24内に配置される液体の量を約40リットルとしたこと、および電圧の大きさおよび印加方向を除いて実施例1と同じ条件で水道水を処理した。実施例4では、(V2/V1)の値は、約13000である。 Example 4
In Example 4, tap water was treated so that the change in pH was small and the ORP was lowered. In Example 4, the amount of liquid disposed in the
実施例5では、pHの変化が小さく且つORPが低下するように水道水を処理した。実施例5では、印加電圧が異なることを除いて、実施例4と同じ条件で水道水を処理した。 (Example 5)
In Example 5, tap water was treated so that the change in pH was small and the ORP was lowered. In Example 5, tap water was treated under the same conditions as in Example 4 except that the applied voltage was different.
実施例6では、アルカリ性水溶液のORPを低下させた。実施例6では、実施例1と同じ装置を用いて実験を行った。ただし、貯水槽24内に配置される液体の量は、約50リットルとした。 (Example 6)
In Example 6, the ORP of the alkaline aqueous solution was reduced. In Example 6, an experiment was performed using the same apparatus as in Example 1. However, the amount of liquid disposed in the
実施例7では、酸性水溶液のORPを低下させた。実施例7では、実施例1と同じ装置を用いて実験を行った。ただし、貯水槽24内に配置される液体の量は、約10リットルとした。 (Example 7)
In Example 7, the ORP of the acidic aqueous solution was reduced. In Example 7, an experiment was performed using the same apparatus as in Example 1. However, the amount of liquid disposed in the
実施例8では、ORPが低下した酸性水溶液のORPを、1000mV以上に戻す実験を行った。まず、pHが約3でORPが1000mV以上の水溶液を1ヶ月間放置することによって、pHが3.09でORPが332mVの酸性水溶液を作製した。次に、その酸性水溶液を実施例2と同じ条件で処理することによって、ORPを1000mV以上にする実験を10回行った。貯水槽24内のKCl水溶液のORPの変化について、表8に示す。 (Example 8)
In Example 8, an experiment was performed to return the ORP of the acidic aqueous solution with a reduced ORP to 1000 mV or more. First, an acidic aqueous solution having a pH of 3.09 and an ORP of 332 mV was prepared by leaving an aqueous solution having a pH of about 3 and an ORP of 1000 mV or more for 1 month. Next, the experiment which makes ORP 1000 mV or more was performed by processing the acidic aqueous solution on the same conditions as Example 2. Table 8 shows changes in the ORP of the KCl aqueous solution in the
実施例9では、図9に示す循環形式で、開放状態にある水性液体のORPを変化させた。ORPを変化させる装置としては、図1に示す装置を用いた。具体的には、開放された容器に入れられた100リットルの水道水のORPを変化させた。第1の槽11の内容積は4cm3であり、第2の槽12の内容積は4cm3であった。実施例9で用いた装置の第1の槽11の開口部11aには、鉛直方向に伸びる円筒状の筒が接続されており、その内容積は53cm3であった。電極間には、1.0Aの定電流を流した。このとき電極間に印加された電圧は、約40Vであった。水性液体は、約1.7L/分の流量で第2の槽12を通過させた。このときの結果を、表9に示す。 Example 9
In Example 9, the ORP of the aqueous liquid in the open state was changed in the circulation mode shown in FIG. The apparatus shown in FIG. 1 was used as an apparatus for changing the ORP. Specifically, the ORP of 100 liters of tap water placed in an open container was changed. The internal volume of the
実施例10では、図8に示す装置で、開放状態にある水性液体のORPを変化させた。ORPを変化させる装置としては、図1に示す装置を用いた。実施例10では、水道水のORPを変化させた。処理前の水道水のORPは、約250mVであった。第1の槽11の内容積は4cm3であり、第2の槽12の内容積は4cm3であった。第1の電極21と第2の電極22との間に、第1の電極21がアノードとなるように電圧を印加した。電極間には、2.0Aの定電流を流した。水性液体は、約0.8L/分の流量で第2の槽12を通過させた。実験開始から約10分で定常状態に達した。そのときの、第2の槽12で処理された後の水道水は、ORPが約-300mVであり、溶存水素濃度が約750ppbであり、pHが約8であった。なお、第2の槽12で処理される水道水の流速を小さくすると、ORPの変化、および、溶存水素濃度の変化が大きくなった。 (Example 10)
In Example 10, the ORP of the aqueous liquid in the open state was changed with the apparatus shown in FIG. The apparatus shown in FIG. 1 was used as an apparatus for changing the ORP. In Example 10, the ORP of tap water was changed. The ORP of tap water before treatment was about 250 mV. The internal volume of the
実施例11では、浴槽に配置されたお湯を、図9に示す装置で処理した。第1の電極21と第2の電極22との間に、第1の電極21がアノードとなるように電圧を印加した。浴槽に配置されたお湯は41℃で180Lであった。第2の槽12および流路の体積は小さいため、第2の槽12を含む循環路に存在するお湯の量は実質的に180Lとみなせる。一方、第1の槽11の内容積(第1の槽で処理されるお湯の量)は、約4cm3であった。電極間には、6Aの定電流を流した。お湯としては、水道水をそのまま41℃に加熱して得られたお湯、または、塩(NaHCO3やNa2SO4など)を溶解させた水道水を41℃に加熱して得られたお湯を用いた。ORPを測定した結果を表11に示す。 (Example 11)
In Example 11, the hot water arranged in the bathtub was processed with the apparatus shown in FIG. A voltage was applied between the
Claims (16)
- 流路を流れる水性液体の酸化還元電位を変化させる方法であって、
(i)セパレータによって仕切られた第1および第2の槽にそれぞれ配置された第1および第2の電極を、前記水性液体に浸漬する工程と、
(ii)前記第1の電極と前記第2の電極との間に電圧を印加することによって、前記水性液体中の水を電気分解する工程とを含み、
前記第2の槽が前記流路の一部を構成しており、
前記第1の槽が前記セパレータを介して前記流路と接続されている、方法。 A method of changing the oxidation-reduction potential of an aqueous liquid flowing through a flow path,
(I) immersing the first and second electrodes respectively disposed in the first and second tanks partitioned by the separator in the aqueous liquid;
(Ii) electrolyzing water in the aqueous liquid by applying a voltage between the first electrode and the second electrode;
The second tank constitutes a part of the flow path;
The method wherein the first tank is connected to the flow path via the separator. - 前記(ii)の工程において、前記第2の槽を1分間あたりに流れる前記水性液体の量が、前記第1の槽に配置される前記水性液体の量の10倍~105倍の範囲にある、請求項1に記載の方法。 In the step (ii), the amount of the aqueous liquid flowing in the second tank per minute is in the range of 10 to 10 5 times the amount of the aqueous liquid disposed in the first tank. The method of claim 1, wherein:
- 前記流路が循環路であり、
前記(ii)の工程において、前記循環路に存在する前記水性液体の量が、前記第1の槽に配置される前記水性液体の量の10倍~105倍の範囲にある、請求項1に記載の方法。 The flow path is a circulation path;
2. In the step (ii), the amount of the aqueous liquid present in the circulation path is in the range of 10 to 10 5 times the amount of the aqueous liquid disposed in the first tank. The method described in 1. - 前記第1の槽に配置されている前記水性液体の一部を排出することによって、前記第2の槽を流れる前記水性液体のpHを制御する、請求項1に記載の方法。 The method according to claim 1, wherein the pH of the aqueous liquid flowing through the second tank is controlled by discharging a part of the aqueous liquid disposed in the first tank.
- 前記第1の槽内の圧力の上昇に応じて前記第1の槽内の前記水性液体が移動するための管が前記第1の槽に接続されている、請求項1に記載の方法。 The method according to claim 1, wherein a pipe for moving the aqueous liquid in the first tank in response to an increase in pressure in the first tank is connected to the first tank.
- 前記管が、下降と上昇とを交互に繰り返している、請求項5に記載の方法。 6. The method of claim 5, wherein the tube repeats descending and ascending alternately.
- 前記第1の槽が大気に開放されており且つ前記第2の槽に大気が流入しない状態で前記(ii)の工程が行われる、請求項1に記載の方法。 The method according to claim 1, wherein the step (ii) is performed in a state where the first tank is open to the atmosphere and no air flows into the second tank.
- 流路を流れる水性液体の酸化還元電位を変化させる装置であって、
前記水性液体が配置される容器と、
前記容器を第1の槽と第2の槽とに仕切るセパレータと、
前記第1の槽に配置された第1の電極と、
前記第2の槽に配置された第2の電極と、
前記第1の電極と第2の電極との間に電圧を印加するための電源とを備え、
前記第2の槽には、前記第2の槽が前記流路の一部を構成するように前記流路に接続される流入口と流出口とが形成されており、
前記第1の槽が前記セパレータを介して前記流路と接続される、装置。 An apparatus for changing the oxidation-reduction potential of an aqueous liquid flowing in a flow path,
A container in which the aqueous liquid is disposed;
A separator that partitions the container into a first tank and a second tank;
A first electrode disposed in the first tank;
A second electrode disposed in the second tank;
A power source for applying a voltage between the first electrode and the second electrode;
The second tank is formed with an inlet and an outlet connected to the flow path so that the second tank forms part of the flow path,
The apparatus with which the said 1st tank is connected with the said flow path through the said separator. - 前記第1の槽に、前記第1の槽内の前記水性液体を排出するための排液路が接続されている、請求項8に記載の装置。 The apparatus according to claim 8, wherein a drainage path for discharging the aqueous liquid in the first tank is connected to the first tank.
- 前記第1の槽内の圧力の上昇に応じて前記第1の槽内の前記水性液体が移動するための管が前記第1の槽に接続されている、請求項8に記載の装置。 The apparatus according to claim 8, wherein a pipe for moving the aqueous liquid in the first tank in response to an increase in pressure in the first tank is connected to the first tank.
- 前記管が、下降と上昇とを交互に繰り返している、請求項10に記載の装置。 The apparatus according to claim 10, wherein the tube repeats descending and ascending alternately.
- 前記管の終端に細管が接続されており、
前記細管の内部の断面積が、前記管の内部の断面積よりも小さい、請求項11に記載の装置。 A narrow tube is connected to the end of the tube,
The apparatus according to claim 11, wherein a cross-sectional area inside the narrow tube is smaller than a cross-sectional area inside the tube. - 前記セパレータが親水性を有する、請求項8に記載の装置。 The apparatus according to claim 8, wherein the separator has hydrophilicity.
- 前記流路が接続された貯水槽をさらに備え、
前記流路が、前記貯水槽と前記第2の槽とを含む循環路を構成している、請求項8に記載の装置。 Further comprising a water tank to which the flow path is connected,
The device according to claim 8, wherein the flow path constitutes a circulation path including the water storage tank and the second tank. - 前記第2の槽の下流側の前記流路が浴槽またはシャワーヘッドに接続されている、請求項8に記載の装置。 The apparatus according to claim 8, wherein the flow path on the downstream side of the second tank is connected to a bathtub or a shower head.
- 前記流路が浴槽に接続されており、
前記流路が、前記浴槽と前記第2の槽とを含む循環路を形成している、請求項8に記載の装置。 The flow path is connected to a bathtub;
The apparatus according to claim 8, wherein the flow path forms a circulation path including the bathtub and the second tank.
Priority Applications (2)
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CN201190000848.4U CN203346132U (en) | 2010-11-01 | 2011-10-28 | Device for enabling ORP (oxidation reduction potential) of aqueous liquid to change |
JP2012541736A JP5311246B2 (en) | 2010-11-01 | 2011-10-28 | Method and apparatus for changing the redox potential of an aqueous liquid |
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JP2010-245057 | 2010-11-01 | ||
JP2010245057 | 2010-11-01 |
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PCT/JP2011/006045 WO2012060078A1 (en) | 2010-11-01 | 2011-10-28 | Method and apparatus for altering oxidation reduction potential of aqueous liquid |
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CN (1) | CN203346132U (en) |
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JP2014014645A (en) * | 2012-06-15 | 2014-01-30 | Nippon Torimu:Kk | Artificial dialysis water manufacturing installation for personal dialysis |
JP2016101579A (en) * | 2014-11-14 | 2016-06-02 | 有限会社ターナープロセス | Apparatus for adjusting liquid quality of aqueous liquid |
KR20170044744A (en) * | 2014-09-01 | 2017-04-25 | 가부시키가이샤니혼트림 | Agricultural electrolyzed water-generating apparatus and agricultural electrolyzed water |
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JP2017136573A (en) * | 2016-02-05 | 2017-08-10 | 株式会社日本トリム | Apparatus for producing electrolysis water, and electrolysis water server provided with the same |
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JP2018069189A (en) * | 2016-11-01 | 2018-05-10 | 株式会社日本トリム | Electrolyzed water server |
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Also Published As
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JPWO2012060078A1 (en) | 2014-05-12 |
CN203346132U (en) | 2013-12-18 |
JP5311246B2 (en) | 2013-10-09 |
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