JP2012040489A - Method and device for generating electrolytic ion water - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and device for generating electrolytic ion water, capable of efficiently generating an alkaline electrolytic water having a desired pH value at low cost.SOLUTION: The device for generating the electrolytic ion water includes a generation tank capable of storing a raw water, an electrolyte tank provided with an electrolyte-storing chamber capable of storing an aqueous electrolyte solution, an ion-exchange membrane, and the anode and cathode plates sandwiching the ion exchange membrane. The electrolyte tank can be immersed into the raw water in the generation tank, and the ion exchange membrane partitions the raw water in the generation tank and the electrolyte solution in the electrolyte storing chamber of the electrolyte tank. The anode plate is arranged at the side of the electrolyte storing chamber to enable contact with the electrolyte solution in the electrolyte storing chamber, and the cathode plate is arranged at a raw water side to enable contact with the raw water in the generation tank, thus isolating the generation tank from the electrolyte tank immersed in the raw water.

Description

  The present invention relates to a method for producing electrolytic ionic water (alkali ion water, alkaline electrolyzed water) and a production apparatus therefor.

  Electrolytic ion water is known to be excellent in cleaning effect and suitable as drinking water, and has attracted attention as cleaning water or drinking water that does not adversely affect the global environment even if drained.

  As one of the electrolytic ionic water generators, there is an electrolytic ionic water generator (Patent Document 1). As shown in FIG. 3, the electrolytic ionic water generating apparatus has an electrolytic cell A partitioned by an ion exchange membrane B into a cathode chamber C and an anode chamber F, a cathode plate E in the cathode chamber C, and an anode plate D in the anode chamber F. The negative plate of the direct current power source G is connected to the cathode plate E, and the positive plate of the direct current power source G is connected to the anode plate D. Raw water (for example, pure water or tap water) is continuously supplied from the outside to the cathode chamber C via the flow rate adjusting valve H, and the electrolyte solution (for example, potassium carbonate aqueous solution or sodium carbonate) in the tank I is supplied to the anode chamber F. When the aqueous solution is continuously supplied by the circulation pump P, potassium ions generated by electrolysis pass through the ion exchange membrane B and enter the cathode chamber C, and the alkaline electrolyzed water enters the cathode chamber C. Is generated, and the generated alkaline electrolyzed water is discharged from an outlet pipe J provided in the cathode chamber C. On the other hand, the electrolyte aqueous solution overflowing through the anode chamber F returns to the electrolyte aqueous solution tank I from the return pipe K provided in the anode chamber F.

JP 2004-42025 A

  Usually, as shown in FIG. 4, the ion-exchange membrane B is provided with mesh-like spacers S made of an insulating material on both sides thereof, and a cathode plate E and an anode plate D are arranged on the outside thereof. The minus of the direct current power source is applied to the minus electrode T1 held and connected to the cathode plate E, and the plus potential is applied to the plus electrode T2 of the anode plate D. The supplied raw water passes through the gap between the ion exchange membrane B, the spacer S, and the cathode plate E, and the aqueous electrolyte solution passes through the gap between the ion exchange membrane B, the anode plate D, and the spacer S.

  When tap water is used as raw water, since tap water contains impurities such as calcium and magnesium, these impurities adhere to the ion exchange membrane B, spacer S, and cathode plate E and are solidified. There is a problem that the raw water cannot pass through due to clogging of the gap, and the amount of water flow decreases, or the current is not sufficiently energized to the electrode due to the influence of these solid substances, and electrolytic ionic water having a desired pH value cannot be obtained. . Also, oxygen gas is generated on the anode side during generation, which becomes fine bubbles and dissolves in the electrolyte aqueous solution, and the bubbles flow into the narrow gap together with the electrolyte aqueous solution, so that electrolysis is inhibited and electrolysis efficiency is improved. There also existed a difficulty that the production efficiency of electrolytic ion water fell. Moreover, since hydrogen gas becomes fine bubbles on the cathode side and is generated in the gaps between the ion exchange membrane B, the cathode plate E, and the spacer S, electrolysis is hindered and electrolysis efficiency is lowered.

  In the case of using pure water instead of tap water, it is necessary to make tap water pure water, and there is a problem that it takes time and cost.

  The problem to be solved by the present invention is to provide an electrolytic ion water generation method and an apparatus for generating the same, which can efficiently generate alkaline electrolyzed water having a desired pH value at low cost.

  In the electrolytic ionic water production method of the present invention, raw water is stored in the production tank, the electrolytic solution tank is immersed in the raw water in the production tank in an insulated state, the aqueous electrolyte solution is stored in the electrolytic solution tank, and the cathode plate An ion exchange membrane sandwiched between anode plates is placed in the production tank to partition the raw water in the production tank and the electrolyte aqueous solution in the electrolyte tank, and the cathode plate side is brought into contact with the raw water in the production tank. The negative electrode of the DC power source is connected to the cathode plate and the positive side of the DC power source is connected to the anode plate, and a DC voltage is applied between both electrodes to connect the raw water and the electrolyte aqueous solution. The cations generated by electrolysis and produced on the anode side (in the electrolyte tank) permeate the ion exchange membrane and permeate the cathode side (in the production tank). Produce and produce tank The electrolytic ionic water produced in the above is taken out from the production tank, and then the raw water is newly stored in the production tank, and the electrolysis is performed so that the electrolytic ionic water can be repeatedly produced in the production tank. It is.

  The electrolytic ionic water generating device of the present invention includes a generation tank capable of storing raw water, an electrolytic solution tank including an electrolytic solution storage chamber capable of storing an aqueous electrolyte solution, an ion exchange membrane, an anode plate and a cathode sandwiching the ion exchange membrane The electrolyte tank can be immersed in the raw water in the production tank, the ion exchange membrane can partition the raw water in the production tank and the aqueous electrolyte solution in the electrolyte storage chamber of the electrolyte tank, and the anode plate Arranged on the electrolyte storage chamber side so as to be in contact with the electrolyte aqueous solution in the electrolyte storage chamber, the cathode plate is disposed on the raw water side so as to be in contact with the raw water in the generation tank, and immersed in the generation tank and the raw water The electrolyte tank to be insulated is insulated.

  The electrolytic ionic water generating device of the present invention is an insulating state in which both the generation tank and the electrolytic solution tank of the electrolytic ionic water generating device are made of an insulating material, and the electrolytic solution tank immersed in the raw water is in an insulating state. Can be.

  The electrolytic ionic water generating device of the present invention comprises an ion exchange membrane of the electrolytic ionic water generating device, an anode plate and a cathode plate sandwiching the ion exchange membrane attached to an electrolyte tank, and the anode plate on the inner surface side of the electrolyte tank. The cathode plate can be disposed on the outer surface side of the electrolyte tank.

  The electrolytic ionic water generating device of the present invention can be made detachable from the electrolytic solution tank by making the ion exchange membrane, the anode plate and the cathode plate of the electrolytic ionic water generating device into a cartridge-type component assembled into one. .

The electrolytic ionic water production method of the present invention has the following effects.
(1) Since raw water is stored in the production tank and the aqueous electrolyte solution is stored in the electrolytic solution tank in the production tank and electrolyzed, electrolytic ionic water can be produced in batches in the production tank in the required amount. When the amount of raw water in the production tank and the concentration of the aqueous electrolyte solution in the electrolytic solution tank are constant, alkaline electrolytic water having a desired pH can be produced simply by adjusting the electrolysis time.
(2) Since electrolysis is performed with both raw water and aqueous electrolyte solution stored, the gap between the ion exchange membrane and the electrode can be made wider than in the continuous production method in which raw water and aqueous electrolyte solution are continuously supplied. Both raw water and electrolyte aqueous solution easily pass through the gap, and even tap water in which calcium or magnesium is contained in the raw water hardly adheres to the electrode or ion exchange membrane. For this reason, electrolysis efficiency is unlikely to decrease with the passage of time of electrolysis. Further, by widening the gap, even if oxygen gas is generated as bubbles on the anode side and hydrogen gas is generated on the cathode side, they are diffused from the gap, so that they are not easily blocked by bubbles. For this reason, productivity of electrolytic ion water improves compared with a continuous type.
(3) Since calcium, magnesium, etc. are difficult to adhere, the period of regular cleaning can be extended, maintenance is easy, and production is not interrupted frequently by regular cleaning, so the productivity of electrolytic ionic water does not decrease .

The electrolytic ionic water generator of the present invention has the following effects.
(1) Since the production tank that can store the raw water, the electrolytic solution tank that can store the aqueous electrolyte solution, the raw water in the production tank, and the ion exchange membrane that can partition the electrolytic aqueous solution in the electrolytic solution tank immersed in the raw water A necessary amount of alkaline electrolyzed water having a desired pH can be produced batchwise.
(2) Since raw water is stored in the production tank and the electrolytic aqueous solution is stored in the electrolytic solution tank to generate electrolytic ionic water, the gap between the ion exchange membrane and the cathode plate and the gap between the ion exchange membrane and the anode plate are widened. As a result, the raw water and aqueous electrolyte solution can easily pass through these gaps, the amount of liquid passing per unit time increases, and the total amount of raw water and aqueous electrolyte solution that contacts both electrodes increases. Water can be generated in a short time compared to the continuous production method, and the production productivity is high.
(3) Since the gap can be widened, even if calcium or magnesium is contained in the raw water, calcium or magnesium is less likely to adhere to the electrode or cation exchange membrane, and the gap is difficult to close. The decomposition efficiency can be maintained for a long time, which contributes to the improvement of the production efficiency of alkaline electrolyzed water. Moreover, even if calcium, magnesium, or the like adheres, cleaning and maintenance are easy, and the adhered matter can be easily removed by washing with acidic water or the like. Periodic cleaning can be extended and maintenance is easy. In the case of frequent periodic inspections, the production of alkaline electrolyzed water is temporarily stopped each time, but the frequency is reduced and productivity is not lowered. Further, even if oxygen gas bubbles are generated on the anode side and hydrogen gas bubbles are generated on the cathode side, the gap is not easily blocked by the bubbles, so that the aqueous electrolyte solution passing through the gap is not easily blocked. Ion water productivity is unlikely to decrease.
(4) Since electrolytic ionic water can be produced in a batch system, if the voltage value and current value are kept constant and the concentration of the aqueous electrolyte solution is kept constant, alkaline electrolyzed water having a desired pH value can be obtained simply by adjusting the energization time. Can be generated.
(5) Since both or one of the production tank and the electrolytic solution tank of the electrolytic ionic water production device is made of an insulating material, the production tank and the electrolytic solution tank immersed in the raw water can be reliably insulated.
(6) The ion exchange membrane of the electrolytic ion water generator, the anode plate and the cathode plate sandwiching the ion exchange membrane are attached to the electrolyte tank, the anode plate is on the inner surface of the electrolyte tank, and the cathode plate is on the electrolyte tank. If arranged on the outer surface side, the ion exchange membrane can be exchanged together with the electrolyte tank.
(7) Since the ion exchange membrane, the anode plate, and the cathode plate are assembled into a cartridge type part and can be detached from the electrolyte tank, the exchange of the ion exchange membrane is facilitated.

Explanatory drawing which shows an example of the electrolytic ion water production | generation apparatus of this invention. FIG. 2 is a detailed view of the ion exchange membrane portion of FIG. 1. Explanatory drawing which shows an example of the conventional electrolytic ion water production | generation apparatus. Explanatory drawing which shows an example of the ion exchange membrane used for the conventional electrolytic ion water production | generation apparatus.

(Embodiment of electrolytic ion water generator)
An example of an embodiment of the electrolytic ionic water generating apparatus of the present invention will be described with reference to FIGS. The electrolytic ionic water generator of this embodiment includes a generation tank 2 that can store raw water 1 and an electrolyte tank 3 that is separate from the generation tank 2. The electrolyte tank 3 includes an electrolyte storage chamber 4 that can store an aqueous electrolyte solution. The raw water 1 may be pure water, tap water, ground water or the like.

  The generation tank 2 is a box-shaped case having an upper opening, and can store raw water 1 therein. The upper surface 5 of the production tank 2 is open. A drain 6 for extracting generated electrolytic ion water is provided on the bottom surface of the generation tank 2. A limit scale (LS) is displayed in the generation tank 2 so that the upper limit and the lower limit of the amount of water can be understood. In this case, notifying means (not shown) for notifying that the amount of water has reached LS can be provided. The production tank 2 shown in FIG. 1 is for 10 liters, but the capacity may be more or less than 10 liters. The production tank 2 is preferably made of an insulating material. The generation tank 2 may be transparent so that the inside can be visually confirmed.

  The electrolyte tank 3 is Z-shaped and has an upper end and a side opening, and a cation exchange membrane (ion exchange membrane) 7 is attached to the side opening. The electrolytic solution tank 3 is formed with an electrolytic solution storage chamber 4 surrounded by a peripheral wall thereof and an ion exchange membrane 7. The electrolyte tank 3 is also preferably made of an insulating material. Moreover, it can also be a transparent thing which can visually recognize an internal state. The shape of the electrolytic solution tank 3 shown in FIG. 1 is an example, and other shapes may be used. The shape and size of the electrolyte tank 3 can be arbitrarily changed.

  As the cation exchange membrane 7, an existing one or a new one can be used. The ion exchange membrane 7 separates the production tank 2 and the electrolyte storage chamber 4 of the electrolyte solution tank 3 and is an exchange membrane having a property of allowing only water to pass through without passing water. As the ion exchange membrane 7, an existing one or a new one can be used. For example, “Celemion” (registered trademark) manufactured by Asahi Glass Co., Ltd. or an exchange membrane manufactured by DuPont Co., Ltd. can be used. .

  As shown in FIG. 2, the ion-exchange membrane 7 has insulating mesh mesh spacers S disposed on both sides thereof, a cathode plate E and an anode plate D disposed on the outer sides thereof, and upper ends of the cathode plate E and the anode plate D. The part is sandwiched between two holders 8a and 8b, and the upper attachment part 9 of the holders 8a and 8b and the electrolyte tank 3 is fastened with bolts B1 and nuts N1 and fixed to the upper attachment part 9 of the electrolyte tank 3, and the cathode The lower end portions of the plate E and the anode plate D are sandwiched between two holders 10a and 10b, and the lower mounting portions 12 of the holders 10a and 10b and the electrolyte tank 3 are tightened with bolts B2 and nuts N2, and the electrolyte tank 3 It is fixed to the lower mounting portion 12. A screw type cathode terminal T1 is attached to the cathode plate E, and a screw type anode terminal T2 is attached to the anode plate D. A cathode-side gap G1 is formed by a spacer S between the ion exchange membrane 7 and the cathode plate E, and an anode-side gap G2 is formed by the spacer S between the ion-exchange membrane 7 and the anode plate D. The raw water can pass through the cathode side gap G1, and the aqueous electrolyte solution can pass through the anode side gap G2. The holders 8a, 8b, 10a, and 10b can be made of ABS resin and other resins.

  The spacers S provided on both surfaces of the ion exchange membrane 7 ensure the gaps G1 and G2, and the cathode plate E and the anode plate D are in direct contact with the ion exchange membrane 7 so that the ion exchange membrane 7 is burned when energized. It is also intended to prevent this. The spacer S shown in FIG. 1 may be made of various insulating materials such as nylon 5 mm square nets and various mesh sizes. It may be something other than the net.

  The cathode plate E and anode plate D are suitably platinum-plated surfaces of titanium expanded metal (having through holes), but may be of other materials and structures. The terminal T1 is bolted to the cathode plate E and the terminal T2 is welded and fixed to the anode plate T2. The lead wire can be connected by a nut 13 screwed to the terminal T1.

(Embodiment of electrolytic ion water generation method)
The electrolytic ionic water generation using the electrolytic ionic water generating apparatus of the present invention can be performed as follows.
(1) The electrolytic solution tank 3 is accommodated in the production tank 2 as shown in FIG. In this case, the electrolyte tank 3 is fixed by, for example, engaging the upper peripheral edge of the generation tank 2 using an arbitrary fixing tool (not shown).
(2) Supply raw water (tap water) 1 into the production tank 2. When the raw water 1 reaches the vicinity of the LS displayed above the generation tank 2, the operation is stopped. At this time, it is confirmed that the water surface of the raw water 1 is higher than the upper end of the ion exchange membrane 7. The raw water 1 can be pure water, tap water, or other liquid.
(3) A potassium carbonate aqueous solution (electrolyte aqueous solution 14) is supplied into the electrolytic solution storage chamber 4 of the electrolytic solution tank 3. At this time, it confirms that the water surface of potassium carbonate aqueous solution exists in the position higher than the water surface of the raw | natural water 1 in the production | generation tank 2. FIG. Further, the cathode plate E attached to the electrolyte tank 3 contacts (immerses) the raw water 1 in the production tank 2 so that the cathode plate E is in the raw water 1 and the anode plate D is the electrolyte in the electrolyte tank 3. Contact (immerse) in aqueous solution. Since the ion exchange membrane 7 does not allow water to pass through, the electrolyte aqueous solution 14 and the raw water 1 are not mixed even if the electrolytic solution tank 3 is immersed in the raw water 1 in the production tank 2. As the electrolyte aqueous solution 14, an aqueous solution in which a potassium carbonate aqueous solution, a sodium carbonate aqueous solution, a sodium hydrogen carbonate aqueous solution, a potassium hydrogen carbonate aqueous solution, a sodium bicarbonate alkali salt, or the like is dissolved can be used.
(4) Connect the negative pole of the DC power source of FIG. 1 to the cathode plate E via the terminal T1, and connect the positive pole to the anode plate D via the terminal T2.
(5) A power switch is turned on in the connected state, and a direct current is supplied between the cathode plate E and the anode plate D. When a direct current is supplied, potassium ions generated in the electrolytic solution storage chamber 4 by electrolysis pass through the ion exchange membrane 7 and enter the generation tank 2, and electrolytic ionic water is generated in the generation tank 2. The
(6) The generated electrolytic ionic water can be taken out from the drain 6 provided in the generation tank 2 to an external tank or container.
(7) Raw water is newly added to the production tank 2 after the electrolytic ion water is taken out. The electrolyte solution tank 3 is replenished with an aqueous electrolyte solution 14 as necessary. In this state, the operations of (4) to (6) can be repeated to generate electrolytic ionic water in a batch manner.

  The electrolytic ionic water generating apparatus of the present invention is widely used as washing water that does not pollute the environment, such as washing parts after machining, pesticide washing of agricultural products, indoor cleaning, body washing, etc. Dirty water used for washing water in painting booths (sewage whose pH value became acidic and foul odor) was taken as raw water and directly electrolyzed. Can be reduced. By returning the reduced water to the original tank of a washing machine, various machines, a painting booth, etc., the water in the original tank is reduced from acidic at pH 5 to alkaline at pH 10 or higher. As a result, the environment where the bacteria are killed and the tank is rotted is improved to a clean environment where no bad odor is generated. In addition, the number of liquid exchanges is reduced, and the amount of industrial waste can be greatly reduced.

DESCRIPTION OF SYMBOLS 1 Raw water 2 Generation tank 3 Electrolyte tank 4 Electrolyte storage chamber 5 Upper surface 6 Drain 7 Ion exchange membrane 8a, 8b Holder 9 Upper attachment part 10a, 10b Holder 12 Lower attachment part 13 Nut 14 Electrolyte aqueous solution A Electrolysis tank B Ion Exchange membrane B1, B2 Bolt C Cathode chamber D Anode plate E Cathode plate F Anode chamber G DC power supply G1, G2 Gap H Flow rate adjusting valve I Tank J Outlet piping K Piping L Holding plate N1, N2 Nut P Circulation pump S Spacer T1, T2 electrode terminal

  The present invention relates to a method for producing electrolytic ionic water (alkali ion water, alkaline electrolyzed water) and a production apparatus therefor.

  Electrolytic ion water is known to be excellent in cleaning effect and suitable as drinking water, and has attracted attention as cleaning water or drinking water that does not adversely affect the global environment even if drained.

  As one of the electrolytic ionic water generators, there is an electrolytic ionic water generator (Patent Document 1). As shown in FIG. 3, the electrolytic ionic water generating apparatus has an electrolytic cell A partitioned by an ion exchange membrane B into a cathode chamber C and an anode chamber F, a cathode plate E in the cathode chamber C, and an anode plate D in the anode chamber F. The negative plate of the direct current power source G is connected to the cathode plate E, and the positive plate of the direct current power source G is connected to the anode plate D. Raw water (for example, pure water or tap water) is continuously supplied from the outside to the cathode chamber C via the flow rate adjusting valve H, and the electrolyte solution (for example, potassium carbonate aqueous solution or sodium carbonate) in the tank I is supplied to the anode chamber F. When the aqueous solution is continuously supplied by the circulation pump P, potassium ions generated by electrolysis pass through the ion exchange membrane B and enter the cathode chamber C, and the alkaline electrolyzed water enters the cathode chamber C. Is generated, and the generated alkaline electrolyzed water is discharged from an outlet pipe J provided in the cathode chamber C. On the other hand, the electrolyte aqueous solution overflowing through the anode chamber F returns to the electrolyte aqueous solution tank I from the return pipe K provided in the anode chamber F.

JP 2004-42025 A

  Usually, as shown in FIG. 4, the ion-exchange membrane B is provided with mesh-like spacers S made of an insulating material on both sides thereof, and a cathode plate E and an anode plate D are arranged on the outside thereof. The minus of the direct current power source is applied to the minus electrode T1 held and connected to the cathode plate E, and the plus potential is applied to the plus electrode T2 of the anode plate D. The supplied raw water passes through the gap between the ion exchange membrane B, the spacer S, and the cathode plate E, and the aqueous electrolyte solution passes through the gap between the ion exchange membrane B, the anode plate D, and the spacer S.

  When tap water is used as raw water, since tap water contains impurities such as calcium and magnesium, these impurities adhere to the ion exchange membrane B, spacer S, and cathode plate E and are solidified. There is a problem that the raw water cannot pass through due to clogging of the gap, and the amount of water flow decreases, or the current is not sufficiently energized to the electrode due to the influence of these solid substances, and electrolytic ionic water having a desired pH value cannot be obtained. . Also, oxygen gas is generated on the anode side during generation, which becomes fine bubbles and dissolves in the electrolyte aqueous solution, and the bubbles flow into the narrow gap together with the electrolyte aqueous solution, so that electrolysis is inhibited and electrolysis efficiency is improved. There also existed a difficulty that the production efficiency of electrolytic ion water fell. Moreover, since hydrogen gas becomes fine bubbles on the cathode side and is generated in the gaps between the ion exchange membrane B, the cathode plate E, and the spacer S, electrolysis is hindered and electrolysis efficiency is lowered.

  In the case of using pure water instead of tap water, it is necessary to make tap water pure water, and there is a problem that it takes time and cost.

  The problem to be solved by the present invention is to provide an electrolytic ion water generation method and an apparatus for generating the same, which can efficiently generate alkaline electrolyzed water having a desired pH value at low cost.

Electrolytic ionized water production method of the present invention, the raw water reserved in generating tank, an electrolyte tank with an ion-exchange membrane in the raw water produced in the tank and immersed in an insulated state, the electrolyte solution in the electrolyte tank The ion-exchange membrane has mesh-like spacers disposed on both sides thereof, and a cathode plate and an anode plate having through holes opened on the entire surface or almost the entire surface are disposed on the outer sides of the spacers. cathode-side gap is formed between the plates, the spacers and the anode-side gap is formed on the anode plates, by mounting the ion exchange membrane to the electrolyte tank, by the ion exchange membrane of the raw water and the electrolyte in the tank of the product tank the electrolyte solution was partitioned, in contact with raw water in the product tank of the cathode plate side, the raw water is passed through the cathode-side gap through the through hole of said cathode plate, the electrolyte solution is the anode And through the hole to pass through the anode-side gap, the negative side of the DC power to the cathode plate, connect the positive side of the DC power supply to the anode plate, the raw water by applying a DC voltage between the electrodes an electrolyte solution electrolysis of, and transmitted to the electrolysis by anodic side (electrolyte tank) cations that are generated by passing through the ion exchange membrane on the cathode side (the product tank), generating tank The electrolytic ionic water is generated in the production tank, the electrolytic ionic water produced in the production tank is taken out from the production tank, and then the raw water is newly stored in the production tank, and the electrolysis is performed in the production tank. The electrolytic ion water can be repeatedly generated.

Electrolytic ion water generation apparatus of the present invention, a generating tank that can store the raw water, the electrolyte reservoir capable of storing an electrolyte solution comprising an electrolyte tank with an ion exchange membrane, a mesh-like on both surfaces of the ion-exchange membrane Insulating spacers are arranged, and a cathode plate and an anode plate having through holes are arranged outside the spacers, and the anode plate is in contact with the aqueous electrolyte solution in the electrolyte storage chamber. The cathode plate is arranged on the raw water side so as to be in contact with the raw water in the production tank, a cathode side gap is formed between the spacer and the cathode plate, and an anode side gap is formed between the spacer and the anode plate, The cathode plate and the anode plate are sandwiched between upper holders and fixed to the electrolyte tank, and the cathode and anode plates are sandwiched between lower holders and fixed to the electrolyte tank. Passing There are immersed in an insulated state in the raw water of the product tank, the electrolyte solution of the electrolyte solution storage chamber of the raw water and the electrolyte tank of the product tank is partitioned by the ion-exchange membrane, the raw water of the cathode plate The cathode side gap can be passed through the hole, and the aqueous electrolyte solution can pass through the anode side gap through the anode plate through hole. The negative side of the DC power source is connected to the cathode plate, and the positive side of the DC power source is connected to the anode plate. Then, by applying a DC voltage between both electrodes, the raw water and the electrolyte aqueous solution are electrolyzed, and the cation generated on the anode side (in the electrolyte tank) by the electrolysis permeates the ion exchange membrane and becomes the cathode. The electrolytic ionic water can be generated in the production tank through the side (in the production tank), and the electrolytic ionic water produced in the production tank is taken out from the production tank. By performing the electrolysis after newly to store the raw water to produce the tank is obtained by allowing repeatedly generating electrolytic ion water generation tank.

Electrolytic ionic water generator of the present invention, the generation tank of the electrolytic ion water generator and either or both of the electrolyte tank and the made of insulating material, the electrolyte tank insulated to be immersed in the product tank and the raw water in the Can be.

The electrolytic ionic water generating device of the present invention is the electrolytic ionic water generating device, wherein the electrolytic ionic water generating device includes an ion exchange membrane , spacers disposed on both outer sides of the ion exchange membrane , and disposed on both outer sides of the spacers. the ion-exchange membrane and the anode plate and the cathode plate sandwiching a spacer with are cartridge type component assembled together, it is possible that the cartridge-type parts are detachable to the electrolyte tank.

The electrolytic ionic water generating apparatus according to the present invention is the cartridge type component according to claim 4 , wherein the electrolytic tank is Z-shaped or substantially Z-shaped in the electrolytic ionic water generating apparatus . Is installed vertically and the electrolyte tank is immersed in the raw water in the production tank in an insulated state, the raw water in the production tank and the aqueous electrolyte solution in the electrolyte storage chamber of the electrolyte tank are partitioned by the ion exchange membrane. The raw water can pass through the cathode side gap through the through hole of the cathode plate, and the electrolyte aqueous solution can pass through the anode side gap through the through hole of the anode plate .

The electrolytic ionic water production method of the present invention has the following effects.
(1) to generate the tank raw water, since the electrolysis storing the electrolyte solution in the electrolyte tank in generating tank, can be generated in a batch only the amount required in the generation tank electrolytic ion water , the original amount of water produced in the tank, it is possible concentration of the electrolyte solution in the electrolyte tank to produce alkaline electrolytic water of a desired pH by simply adjusting the case of a constant, the electrolysis time.
(2) Since electrolysis is performed with both raw water and aqueous electrolyte solution stored, the gap between the ion exchange membrane and the electrode can be made wider than in the continuous production method in which raw water and aqueous electrolyte solution are continuously supplied. Both raw water and electrolyte aqueous solution easily pass through the gap, and even tap water in which calcium or magnesium is contained in the raw water hardly adheres to the electrode or ion exchange membrane. For this reason, electrolysis efficiency is unlikely to decrease with the passage of time of electrolysis. Further, by widening the gap, even if oxygen gas is generated as bubbles on the anode side and hydrogen gas is generated on the cathode side, they are diffused from the gap, so that they are not easily blocked by bubbles. For this reason, productivity of electrolytic ion water improves compared with a continuous type.
(3) Since calcium, magnesium, etc. are difficult to adhere, the period of regular cleaning can be extended, maintenance is easy, and production is not interrupted frequently by regular cleaning, so the productivity of electrolytic ionic water does not decrease .

The electrolytic ionic water generator of the present invention has the following effects.
(1) and generating a tank capable of storing raw water, an electrolyte tank that can store the electrolyte solution, and the raw water produced in the tank is provided with the ion-exchange membrane capable of partitioning the electrolyte solution of the electrolyte tank immersed in the raw water A necessary amount of alkaline electrolyzed water having a desired pH can be produced batchwise.
(2) storing the raw water to produce tanks, an electrolyte solution and stored in an electrolyte tank, it is possible to generate electrolytic ion water, ion-exchange membrane and the cathode plate of the gap, the gap between the ion exchange membrane and the anode plate, widely As a result, the raw water and aqueous electrolyte solution can easily pass through these gaps, the amount of liquid passing per unit time increases, and the total amount of raw water and aqueous electrolyte solution that contacts both electrodes increases. Water can be generated in a short time compared to the continuous production method, and the production productivity is high.
(3) Since the gap can be widened, even if calcium or magnesium is contained in the raw water, calcium or magnesium is less likely to adhere to the electrode or cation exchange membrane, and the gap is difficult to close. The decomposition efficiency can be maintained for a long time, which contributes to the improvement of the production efficiency of alkaline electrolyzed water. Moreover, even if calcium, magnesium, or the like adheres, cleaning and maintenance are easy, and the adhered matter can be easily removed by washing with acidic water or the like. Periodic cleaning can be extended and maintenance is easy. In the case of frequent periodic inspections, the production of alkaline electrolyzed water is temporarily stopped each time, but the frequency is reduced and productivity is not lowered. Further, even if oxygen gas bubbles are generated on the anode side and hydrogen gas bubbles are generated on the cathode side, the gap is not easily blocked by the bubbles, so that the aqueous electrolyte solution passing through the gap is not easily blocked. Ion water productivity is unlikely to decrease.
(4) Since electrolytic ionic water can be produced in a batch system, if the voltage value and current value are kept constant and the concentration of the aqueous electrolyte solution is kept constant, alkaline electrolyzed water having a desired pH value can be obtained simply by adjusting the energization time. Can be generated.
(5) the so produced tank of the electrolytic ion water generator and either or both of the electrolyte tank was made of insulating material, an electrolyte tank immersed generated tank and its raw water inside can be surely insulated.
(6) and the ion exchange membrane electrolytic ion water generator, attach the sandwiching cathode and anode plates of the ion exchange membrane to the electrolyte tank, the inner surface of the electrolyte tank anode plate, the electrolyte tank of the cathode plate by arranging the outer side, it can be replaced by an electrolyte tank ion exchange membrane.
(7) in the cartridge-type components assembled into one ion exchange membrane and the anode plate and the cathode plate, so are the detachable to the electrolyte tank, it facilitates the replacement of the ion exchange membrane.

Explanatory drawing which shows an example of the electrolytic ion water production | generation apparatus of this invention. FIG. 2 is a detailed view of the ion exchange membrane portion of FIG. 1. Explanatory drawing which shows an example of the conventional electrolytic ion water production | generation apparatus. Explanatory drawing which shows an example of the ion exchange membrane used for the conventional electrolytic ion water production | generation apparatus.

(Embodiment of electrolytic ion water generator)
An example of an embodiment of the electrolytic ionic water generating apparatus of the present invention will be described with reference to FIGS. The electrolytic ionic water generator of this embodiment includes a generation tank 2 that can store raw water 1 and an electrolyte tank ( electrolyte tank ) 3 that is separate from the generation tank 2. The electrolyte tank 3 includes an electrolyte storage chamber 4 that can store an aqueous electrolyte solution. The raw water 1 may be pure water, tap water, ground water or the like.

  The generation tank 2 is a box-shaped case having an upper opening, and can store raw water 1 therein. The upper surface 5 of the production tank 2 is open. A drain 6 for extracting generated electrolytic ion water is provided on the bottom surface of the generation tank 2. A limit scale (LS) is displayed in the generation tank 2 so that the upper limit and the lower limit of the amount of water can be understood. In this case, notifying means (not shown) for notifying that the amount of water has reached LS can be provided. The production tank 2 shown in FIG. 1 is for 10 liters, but the capacity may be more or less than 10 liters. The production tank 2 is preferably made of an insulating material. The generation tank 2 may be transparent so that the inside can be visually confirmed.

The electrolyte tank 3 is Z-shaped and has an upper end and a side opening, and a cation exchange membrane (ion exchange membrane) 7 is attached to the side opening. The electrolyte tank 3 electrolyte reservoir 4 surrounded by the peripheral wall and the ion exchange membrane 7 is formed. The electrolyte tank 3 is also preferably made of an insulating material. Moreover, it can also be a transparent thing which can visually recognize an internal state. The shape of the electrolyte tank 3 shown in FIG. 1 is an example, it may be other shapes. The shape and size of the electrolyte tank 3 can be arbitrarily changed.

As the cation exchange membrane 7, an existing one or a new one can be used. Ion-exchange membrane 7 is intended to partition the electrolytic solution storage chamber 4 of the product tank 2 and the electrolyte tank 3, water is exchange membrane having a property of passing only cations not through. As the ion exchange membrane 7, an existing one or a new one can be used. For example, “Celemion” (registered trademark) manufactured by Asahi Glass Co., Ltd. or an exchange membrane manufactured by DuPont Co., Ltd. can be used. .

  As shown in FIG. 2, the ion-exchange membrane 7 has insulating mesh mesh spacers S disposed on both sides thereof, a cathode plate E and an anode plate D disposed on the outer sides thereof, and upper ends of the cathode plate E and the anode plate D. The part is sandwiched between two holders 8a and 8b, and the upper attachment part 9 of the holders 8a and 8b and the electrolyte tank 3 is fastened with bolts B1 and nuts N1 and fixed to the upper attachment part 9 of the electrolyte tank 3, and the cathode The lower end portions of the plate E and the anode plate D are sandwiched between two holders 10a and 10b, and the lower mounting portions 12 of the holders 10a and 10b and the electrolyte tank 3 are tightened with bolts B2 and nuts N2, and the electrolyte tank 3 It is fixed to the lower mounting portion 12. A screw type cathode terminal T1 is attached to the cathode plate E, and a screw type anode terminal T2 is attached to the anode plate D. A cathode-side gap G1 is formed by a spacer S between the ion exchange membrane 7 and the cathode plate E, and an anode-side gap G2 is formed by the spacer S between the ion-exchange membrane 7 and the anode plate D. The raw water can pass through the cathode side gap G1, and the aqueous electrolyte solution can pass through the anode side gap G2. The holders 8a, 8b, 10a, and 10b can be made of ABS resin and other resins.

  The spacers S provided on both surfaces of the ion exchange membrane 7 ensure the gaps G1 and G2, and the cathode plate E and the anode plate D are in direct contact with the ion exchange membrane 7 so that the ion exchange membrane 7 is burned when energized. It is also intended to prevent this. The spacer S shown in FIG. 1 may be made of various insulating materials such as nylon 5 mm square nets and various mesh sizes. It may be something other than the net.

  The cathode plate E and anode plate D are suitably platinum-plated surfaces of titanium expanded metal (having through holes), but may be of other materials and structures. The terminal T1 is bolted to the cathode plate E and the terminal T2 is welded and fixed to the anode plate T2. The lead wire can be connected by a nut 13 screwed to the terminal T1.

(Embodiment of Electrolytic Ionized Water Generation Method)
The electrolytic ionic water generation using the electrolytic ionic water generating apparatus of the present invention can be performed as follows.
(1) accommodated in the generating tank 2 electrolyte tank 3 as shown in FIG. In this case, the electrolyte tank 3 is fixed, such as by engaging the periphery on the product tank 2 with any of the fixture (not shown).
(2) Supply raw water (tap water) 1 into the production tank 2. When the raw water 1 reaches the vicinity of the LS displayed above the generation tank 2, the operation is stopped. At this time, it is confirmed that the water surface of the raw water 1 is higher than the upper end of the ion exchange membrane 7. The raw water 1 can be pure water, tap water, or other liquid.
(3) supplying an aqueous potassium carbonate solution (electrolyte solution 14) in the electrolyte storage chamber 4 of the electrolyte tank 3. At this time, it confirms that the water surface of potassium carbonate aqueous solution exists in the position higher than the water surface of the raw | natural water 1 in the production | generation tank 2. FIG. The electrolyte tank 3 mounted Aru cathode plate E is in contact with the raw water 1 in the product tank 2 so as to (immersion), a cathode plate E in the raw water 1, the electrolyte of the anode plate D electrolyte tank 3 Contact (immerse) in aqueous solution. The ion exchange membrane 7 because it is of a nature that water impervious, electrolyte solution 14 and the raw water 1 be immersed in the raw water 1 in generating tank 2 electrolyte tank 3 will not be mixed. As the electrolyte aqueous solution 14, an aqueous solution in which a potassium carbonate aqueous solution, a sodium carbonate aqueous solution, a sodium hydrogen carbonate aqueous solution, a potassium hydrogen carbonate aqueous solution, a sodium bicarbonate alkali salt, or the like is dissolved can be used.
(4) Connect the negative pole of the DC power source of FIG. 1 to the cathode plate E via the terminal T1, and connect the positive pole to the anode plate D via the terminal T2.
(5) A power switch is turned on in the connected state, and a direct current is supplied between the cathode plate E and the anode plate D. When a direct current is supplied, potassium ions generated in the electrolytic solution storage chamber 4 by electrolysis pass through the ion exchange membrane 7 and enter the generation tank 2, and electrolytic ionic water is generated in the generation tank 2. The
(6) The generated electrolytic ionic water can be taken out from the drain 6 provided in the generation tank 2 to an external tank or container.
(7) Raw water is newly added to the production tank 2 after the electrolytic ion water is taken out. To replenish the electrolyte solution 14 if necessary to the electrolyte tank 3. In this state, the operations of (4) to (6) can be repeated to generate electrolytic ionic water in a batch manner.

  The electrolytic ionic water generating apparatus of the present invention is widely used as washing water that does not pollute the environment, such as washing parts after machining, pesticide washing of agricultural products, indoor cleaning, body washing, etc. Dirty water used for washing water in painting booths (sewage whose pH value became acidic and foul odor) was taken as raw water and directly electrolyzed. Can be reduced. By returning the reduced water to the original tank of a washing machine, various machines, a painting booth, etc., the water in the original tank is reduced from acidic at pH 5 to alkaline at pH 10 or higher. As a result, the environment where the bacteria are killed and the tank is rotted is improved to a clean environment where no bad odor is generated. In addition, the number of liquid exchanges is reduced, and the amount of industrial waste can be greatly reduced.

1 raw water 2 generation tank 3 electrolyte tank 4 electrolyte reservoir 5 top 6 drain 7 ion exchange membrane 8a, 8b holder 9 upper mounting portion 10a, 10b holder 12 lower mounting portion 13 nut 14 electrolyte solution A electrolytic cell B ions Exchange membrane B1, B2 Bolt C Cathode chamber D Anode plate E Cathode plate F Anode chamber G DC power supply G1, G2 Gap H Flow rate adjusting valve I Tank J Outlet piping K Piping L Holding plate N1, N2 Nut P Circulation pump S Spacer T1, T2 electrode terminal

Claims (5)

  The raw water is stored in the production tank, the electrolyte tank is immersed in the raw water in the production tank in an insulated state, the aqueous electrolyte solution is stored in the electrolytic tank, and an ion exchange membrane sandwiched between the cathode plate and the anode plate is provided. Place in the production tank to partition the raw water in the production tank and the electrolyte aqueous solution in the electrolyte tank, contact the cathode plate side with the raw water in the production tank, and contact the anode plate side with the aqueous electrolyte solution in the electrolyte tank The negative side of the DC power source is connected to the cathode plate and the positive side of the DC power source is connected to the anode plate, and a DC voltage is applied between the electrodes to electrolyze the raw water and the aqueous electrolyte solution. The cations generated in the electrolyte tank permeate the ion exchange membrane and permeate the cathode side (in the production tank) to produce electrolytic ionic water in the production tank and are produced in the production tank. Electrolytic ionic water produced The electrolytic ionic water generation method is characterized in that after the raw water is newly stored in the production tank and then electrolyzed, the electrolytic ionic water can be repeatedly produced in the production tank. .   A production tank capable of storing raw water, an electrolyte tank including an electrolyte storage chamber capable of storing an aqueous electrolyte solution, an ion exchange membrane, an anode plate and a cathode plate sandwiching the ion exchange membrane, and the electrolyte tank includes It can be immersed in the raw water in the production tank, the ion exchange membrane can partition the raw water in the production tank and the aqueous electrolyte solution in the electrolytic solution storage chamber, and the anode plate can be in contact with the electrolytic aqueous solution in the electrolytic solution storage chamber The cathode plate is arranged on the raw water side so as to be in contact with the raw water in the production tank, and the production tank and the electrolytic solution tank immersed in the raw water are insulated. An electrolytic ionic water generator characterized by the above.   The electrolytic ionic water generator according to claim 2, wherein both or one of the production tank and the electrolytic solution tank is made of an insulating material so that the production tank and the electrolytic solution tank immersed in the raw water can be insulated. Electrolytic ionic water generator characterized by the above.   4. The electrolytic ionic water generator according to claim 2 or 3, wherein the ion exchange membrane of the electrolytic ionic water generator, an anode plate and a cathode plate sandwiching the ion exchange membrane are attached to an electrolyte tank, and the anode plate is an electrolyte solution. An electrolytic ionic water generating apparatus, wherein a cathode plate is disposed on an outer surface side of an electrolyte solution tank on an inner surface side of the tank.   5. The electrolytic ionic water generating device according to claim 2, wherein an ion exchange membrane, an anode plate, and a cathode plate of the electrolytic ionic water generating device are combined into a cartridge type part, and the electrolytic solution An electrolytic ionic water generating device characterized by being detachable from a tank.

Images