JP5901665B2 - Dialysate preparation water production equipment - Google Patents

Description

  The present invention relates to an apparatus for producing dialysate preparation water for preparing a dialysate.

  Hemodialysis is one of the effective treatments for renal failure patients who have impaired kidney function and cannot excrete urine to regulate water content and remove harmful substances such as urea. Are known.

  In this hemodialysis, blood is extracted from the body using a blood pump, and the dialysate and blood are brought into contact with each other through a dialyzer, thereby utilizing a diffusion phenomenon due to a concentration gradient to remove harmful substances from the body. In addition, after removing water, the blood is returned to the body again (returning blood).

  In recent years, it is known that oxidative stress occurs in dialysis patients during hemodialysis. This is considered to be caused by active oxygen generated during dialysis, and it has been proposed to eliminate this active oxygen to reduce oxidative stress.

  For example, a method for producing a dialysate in which high-concentration hydrogen is dissolved by dissolving hydrogen in purified water (hereinafter referred to as “reverse osmosis water”) treated with a reverse osmosis membrane (RO membrane) is proposed. Has been. By using this dialysate, hydrogen can be reacted with hydroxy radicals in the living body to suppress oxidative stress and inflammatory reaction.

  Here, in general, this reverse osmosis water is once stored in the RO tank, and from there, a RO pump or the like dissolves a predetermined powder in the reverse osmosis water to give a predetermined dialysate. Device) and dialysis fluid supply device (device that supplies dialysis fluid to the dialysis management device (patient monitoring device)), and the patient's blood vessels are purified through a dialyzer attached to the dialysis management device. (For example, refer patent document 1).

JP 2002-172160 A

  In the conventional dialysis apparatus, reverse osmosis water is supplied to the dissolution apparatus and the dialysate supply apparatus at a predetermined timing, so that a constant pressure is applied to the reverse osmosis water by always operating the RO pump. It has a configuration.

  Accordingly, among the reverse osmosis water once supplied to the dissolution apparatus and the dialysate supply apparatus by the RO pump, the reverse osmosis water that is not used in the dissolution apparatus and the dialysate supply apparatus returns to the RO tank. It is configured to circulate by the RO pump.

  However, in the configuration in which reverse osmosis water containing hydrogen is circulated in this way, the concentration of dissolved hydrogen in the reverse osmosis water decreases due to physical impact or the like during the circulation process, and the dissolved hydrogen concentration is kept constant. There was a problem that it was difficult to maintain a high concentration of.

  Then, this invention is made | formed in view of the above-mentioned problem, and it aims at providing the manufacturing apparatus of the water for dialysate preparation which can maintain the dissolved hydrogen concentration in reverse osmosis water at high concentration.

In order to achieve the above object, a dialysis solution preparation water production apparatus according to the present invention includes a tank for storing water, a hydrogen dissolution apparatus connected to the tank for dissolving hydrogen in water introduced from the tank, and hydrogen dissolution A reverse osmosis membrane treatment device that is connected to the device and performs reverse osmosis membrane treatment on water in which hydrogen is dissolved, and a circulation path that circulates reverse osmosis water treated by the reverse osmosis membrane treatment device and introduces it into the tank. An electrolyzed water generating device that dissolves hydrogen in water containing reverse osmosis water introduced from a tank by performing electrolysis treatment of water containing reverse osmosis water using a solid polymer membrane , and the provided water inlet side of the electrolytic water generation apparatus, a sensor for detecting the concentration of dissolved hydrogen water containing reverse osmosis water to the water inlet to the electrolytic water generation apparatus, connected to the sensor, the electrolysis treatment with an electrolytic water generation apparatus Determine the electrolysis current An electrolysis current determination means, an electrolysis current determination means and an electrolyzed water generation device, and an electrolysis current supply means for supplying an electrolysis current to the electrolysis water generation device, and an electrolysis current determination means. further comprising a memory means for storing data of the target value, electrolytic current determining means compares the target value of stored dissolved hydrogen concentration to a value storage means of the dissolved hydrogen concentration detected by the sensor, comparing The electrolysis current is determined on the basis of the result, and the electrolysis current supply means supplies the electrolysis current determined by the electrolysis current determination means to the electrolyzed water generating device.

  According to the same configuration, the reverse osmosis water treated by the reverse osmosis membrane treatment apparatus is provided with a circulation path for circulating the reverse osmosis water and introduced into the tank, and the hydrogen dissolving apparatus converts the water containing the reverse osmosis water from the tank into water. Even if the dissolved hydrogen concentration in the reverse osmosis water is reduced due to physical impact during the process of circulating the reverse osmosis water to dissolve the hydrogen, the dissolved hydrogen concentration in the reverse osmosis water is high. Can be kept in.

  According to the present invention, the dissolved hydrogen concentration in the circulating reverse osmosis water can be kept high.

It is a figure which shows the structure of the manufacturing apparatus of the water for dialysate preparation which concerns on embodiment of this invention. It is a figure which shows the electrolytic vessel in the electrolyzed water production | generation apparatus of the manufacturing apparatus of the dialysate preparation water which concerns on embodiment of this invention. It is a flowchart for demonstrating the adjustment method of the dissolved hydrogen concentration by the dissolved hydrogen concentration adjustment apparatus which concerns on embodiment of this invention. It is a flowchart for demonstrating the adjustment method of the dissolved hydrogen concentration by the dissolved hydrogen concentration adjustment apparatus which concerns on embodiment of this invention. It is a figure which shows the modification of the manufacturing apparatus of the water for dialysate preparation which concerns on embodiment of this invention. It is a figure which shows the modification of the manufacturing apparatus of the water for dialysate preparation which concerns on embodiment of this invention.

  FIG. 1 is a conceptual diagram showing the configuration of a dialysate preparation water producing apparatus according to an embodiment of the present invention. Moreover, FIG. 2 is a figure which shows the electrolytic vessel in the electrolyzed water production | generation apparatus in the manufacturing apparatus of the dialysate preparation water which concerns on embodiment of this invention.

  The dialysis solution preparation water manufacturing apparatus 1 includes a prefilter 3, a water softening device 4 connected to the prefilter 3, an activated carbon treatment device (carbon filter) 5 connected to the water softening device 4, and an activated carbon treatment device. 5, a tank 6 connected to the tank 6, an electrolyzed water generator 7 connected to the tank 6, an electrolyzed water tank 8 connected to the electrolyzed water generator 7, and a reverse osmosis membrane treatment apparatus connected to the electrolyzed water tank 8. 9 and.

  The prefilter 3 is for removing impurities (for example, iron rust and sand particles) from the raw water 2 (hard water containing dissolved solids such as calcium ions and magnesium ions which are hardness components).

  The water softening device 4 is for removing the hardness component from the raw water 2 by ion exchange and performing softening water by ion exchange. In the present embodiment, tap water, well water, ground water, or the like can be used as the raw water 2.

  The activated carbon treatment device 5 uses activated carbon, which is a porous adsorbent, for the raw water treated by the water softening device 4 to physically absorb residual chlorine, chloramine, organic matter, etc. contained in the raw water. This is for performing the removal process.

  In addition, a well-known thing can be used as the above-mentioned water softening apparatus 4 and the activated carbon treatment apparatus 5. FIG.

  The tank 6 includes raw water treated by the activated carbon treatment device 5 (raw water before electrolysis by the electrolyzed water production device 7 and before reverse osmosis membrane treatment by the reverse osmosis membrane treatment device 9), and an electrolyzed water production device 7 for storing water circulating after electrolysis and reverse osmosis membrane treatment.

  The electrolyzed water generator 7 generates water in which hydrogen used as dialysate preparation water is dissolved (dissolved hydrogen water) by subjecting the raw water treated by the activated carbon treatment device 5 to electrolysis. belongs to.

  Moreover, the electrolyzed water generating apparatus 7 of the present embodiment is characterized in that it includes an electrolytic cell 20 having a solid polymer membrane (solid polymer membrane electrolyte membrane) 10 shown in FIG.

  As shown in FIG. 2, the electrolytic cell 20 is a power supply body that is disposed to face each other with the solid polymer film 10 and the solid polymer film 10 interposed therebetween, and that supplies power to the electrolytic cell 20. An anode 11 and a cathode 12, and a dielectric layer 13 disposed between the solid polymer film 10 and the anode 11 and between the solid polymer film 10 and the cathode 12 are provided.

  As shown in FIG. 2, the anode 11 and the cathode 12 are electrically connected, and the solid polymer film 10, the anode 11, the cathode 12, and the dielectric layer 13 are connected to the electrolytic cell body 15. Housed inside.

  As shown in FIG. 2, the electrolytic cell main body 15 is formed with an introduction path 16 for introducing the raw water 2 to be electrolyzed into the electrolytic cell main body 15.

  Examples of the material of the anode 11 and the cathode 12 include titanium and platinum.

  Moreover, as a material which forms the dielectric material layer 13, titanium, platinum, etc. are mentioned, for example.

The solid polymer film 10 has a role of moving oxonium ions (H ₃ O ⁺ ) generated on the anode 11 side to the cathode 12 side by electrolysis.

  As this solid polymer film 10, for example, a film formed of a fluorine-based resin material having a sulfonic acid group can be suitably used. More specifically, commercially available products such as Nafion (manufactured by DuPont), Flemion (manufactured by Asahi Glass), and Aciplex (manufactured by Asahi Glass) can be suitably used as the solid polymer film 10 in the present invention.

In the electrolysis in the electrolyzed water generating apparatus 7 using such a solid polymer membrane 10, the following reactions occur on the anode 11 side and the cathode 12 side, respectively.
Anode side: 6H ₂ O → 4H ₃ O ⁺ + O ₂ + 4e ⁻
Cathode side: 4H ₃ O ⁺ + 4e ⁻ → 2H ₂ + 4H ₂ O

That is, in the present embodiment, oxonium ions (H ₃ O ⁺ ) are used as the hydrogen generation raw material in the cathode 12, and OH ⁻ ions are not generated during the electrolysis process in the electrolyzed water generation device 7. Therefore, even when electrolysis is performed at a high current value in order to increase the amount of dissolved hydrogen, the pH of the treated water does not change.

  Therefore, there is no inconvenience that the dissolved hydrogen concentration of treated water is suppressed due to the upper limit value of pH, and electrolysis is performed at a desired high current value to improve the dissolved hydrogen concentration of treated water. It becomes possible to make it. As a result, it is possible to obtain treated water having a necessary dissolved hydrogen concentration.

In addition, water is electrolyzed using the solid polymer membrane 10, and no OH ^- ion is generated on the cathode side during electrolysis, so reverse osmosis is performed using the electrical conductivity of reverse osmosis water. It becomes possible to accurately evaluate a decrease in the ability to remove impurities in the membrane processing apparatus 9 (deterioration of the reverse osmosis membrane processing apparatus 9).

  And the treated water (dissolved hydrogen water) 17 produced | generated by the above-mentioned electrolysis process is sent to the electrolyzed water tank 8 connected to the electrolyzed water production | generation apparatus 7 by the water supply path 18 formed in the cathode side of the electrolytic cell main body 15. FIG. Sent. In addition, the dissolved oxygen water 19 generated on the anode side by the electrolysis treatment is discharged to the outside through the drainage channel 21 formed on the anode side of the electrolytic cell body 15.

  The electrolyzed water tank 8 is for storing the dissolved hydrogen water generated by the electrolyzed water generator 7.

  The reverse osmosis membrane treatment device 9 is configured to prevent a phenomenon (osmosis) in which water moves from a low-concentration solution to a high-concentration solution when there are solutions having different concentrations at the semipermeable membrane as a boundary. By applying pressure to the water, the water is transferred from the high-concentration side solution to the low-concentration side solution to obtain water permeated to the low-concentration side (reverse osmosis membrane treatment).

  And since this reverse osmosis membrane treatment device 9 can further remove impurities such as trace metals from the raw water obtained by the above-described series of treatments, the water quality standard defined in ISO 13959 (dialysis water standard) It is possible to obtain water that satisfies the conditions (reverse osmosis water).

  As shown in FIG. 1, the reverse osmosis membrane treatment device 9 is subjected to the reverse osmosis membrane 36 for performing the reverse osmosis treatment on the dissolved hydrogen water produced by the electrolyzed water production device 7 and the reverse osmosis membrane treatment. The reverse osmosis water tank 37 for storing the reverse osmosis water and the pump 38 for supplying the reverse osmosis water to the dissolving device 22 and the dialysate supply device 23 are provided.

  As shown in FIG. 1, when the reverse osmosis water 25 is used in the dissolution device 22 and the dialysate supply device 23, the reverse osmosis water 25 is dissolved into the dissolution device 22 and the dialysis by a pump 38 at a predetermined timing. The liquid is supplied to the liquid supply device 23, and a predetermined dialysate is produced by the dissolving device 22, and the produced dialysate is supplied to the dialysate supply device 23. Then, the dialysate is supplied from the dialysate supply device 23 to each patient monitoring device (not shown), and the patient's blood is purified.

  As shown in FIG. 1, the reverse osmosis water 25 that has been supplied to the dissolution apparatus 22 and the dialysate supply apparatus 23 but has not been used is returned to the reverse osmosis water tank 37 by the switching valve 24.

  And when reverse osmosis water 25 is required in dissolution device 22 and dialysate supply device 23, reverse osmosis water 25 circulates via reverse osmosis water tank 37. On the other hand, when the reverse osmosis water 25 is not used in the dissolving device 22 and the dialysate supply device 23 (that is, when the reverse osmosis water 25 is unnecessary), the reverse osmosis water 25 is fed to the circulation path 27 by the switching valve 24. The reverse osmosis water 25 is circulated through the circulation path 27 and introduced into the tank 6.

  Here, as described above, in the conventional dialysis apparatus, the concentration of dissolved hydrogen in the reverse osmosis water decreases due to physical impact or the like in the process of circulating the reverse osmosis water containing hydrogen, There was a problem that it was difficult to keep the dissolved hydrogen concentration constant.

  Therefore, in the present embodiment, the dissolved hydrogen in the reverse osmosis water 25 is obtained by performing electrolysis again so as to compensate for the lack of dissolved hydrogen in the reverse osmosis water 25 using feedback control using a sensor. The density is maintained at a desired density.

  More specifically, as shown in FIG. 1, the dialysate preparation water manufacturing apparatus 1 in the present embodiment includes a dissolved hydrogen concentration adjusting device 30 for adjusting the dissolved hydrogen concentration in the reverse osmosis water 25. .

  The dissolved hydrogen concentration adjusting device 30 is provided on the above-described electrolyzed water generating device 7 and the water inlet side of the electrolyzed water generating device 7 (that is, the introduction path 16 of the electrolytic cell 20), and the water that enters the electrolyzed water generating device 7. (That is, the mixed water containing the reverse osmosis water 25 and the raw water 2 that passes through the reverse osmosis membrane treatment device 9 and circulates through the tank 6 (hereinafter referred to as “water containing the reverse osmosis water 25”)). A sensor 31 for detecting the dissolved hydrogen concentration and water discharged from the electrolyzed water generating device 7 (that is, electrolyzed water generated) provided on the water discharge side of the electrolyzed water generating device 7 (that is, the water supply path 18 of the electrolyzer 20). And a sensor 32 for detecting the dissolved hydrogen concentration of the dissolved hydrogen water generated by the apparatus 7.

  The sensors 31 and 32 are not particularly limited as long as they can detect the dissolved hydrogen concentration. For example, a dissolved hydrogen electrode using a diaphragm type polarographic method (trade name: dissolved hydrogen concentration meter DH-35A manufactured by Toa DKK Corporation). ) Can be used.

  In addition, the dissolved hydrogen concentration adjusting device 30 is connected to the sensors 31 and 32, and the electrolytic current determining unit 33, the electrolytic current determining unit 33, and the electrolyzed water generating unit determine the electrolytic current of the electrolysis treatment by the electrolytic water generating unit 7. Connected to the apparatus 7 (that is, the electrolytic cell 20) and connected to the electrolysis current supply means 34 for supplying the electrolysis current to the electrolyzed water generation apparatus 7 and the electrolysis current determination means 33, the data of the target value of the dissolved hydrogen concentration And storage means 35 for storing.

  Next, a method for adjusting the dissolved hydrogen concentration by the dissolved hydrogen concentration adjusting device 30 will be described. 3 and 4 are flowcharts for explaining a method for adjusting the dissolved hydrogen concentration by the dissolved hydrogen concentration adjusting apparatus according to the present embodiment.

  First, the sensor 31 detects the dissolved hydrogen concentration of water that enters the electrolyzed water generating device 7 (water that passes through the reverse osmosis membrane treatment device 9 and circulates through the tank 6 and includes the reverse osmosis water 25) ( Step S1).

  Next, the dissolved hydrogen concentration data detected by the sensor 31 is transmitted to the electrolytic current determining means 33 (step S2).

  Next, the electrolysis current determination means 33 reads data relating to the target value of the dissolved hydrogen concentration stored in the storage means 35 (step S3).

Next, the electrolytic current determination unit 33 compares the dissolved hydrogen concentration value C ₁ detected by the sensor 31 with the target value C of the dissolved hydrogen concentration read from the storage unit 35. That is, the electrolytic current determination means 33 determines whether or not the dissolved hydrogen concentration value C ₁ detected by the sensor 31 is smaller than the target value C of the dissolved hydrogen concentration read from the storage means 35 (that is, C ₁ <C). Is determined (step S4).

Then, the electrolytic current determining means 33 is dissolved when the dissolved hydrogen concentration value C ₁ detected by the sensor 31 is smaller than the target value C of the dissolved hydrogen concentration read from the storage means 35 (ie, C ₁ <C). It is determined that the hydrogen concentration is insufficient (decrease), and the electrolysis current of the electrolysis treatment by the electrolyzed water generating device 7 is determined so that the dissolved hydrogen concentration of the water entering the electrolyzed water generating device 7 becomes the target value C. (Step S5). And the electrolysis current determination means 33 transmits the signal regarding the determined electrolysis current to the electrolysis current supply means 34 which supplies electrolysis current with respect to the electrolyzed water production | generation apparatus 7 (step S6).

  Next, the electrolysis current supply means 34 supplies the electrolysis current based on the input signal to the electrolyzed water generation device 7. In the electrolysis water generation device 7, the dissolved hydrogen concentration of the water that has entered the electrolysis water generation device 7 is increased. The electrolysis process is performed so as to achieve the target value C (step S7).

On the other hand, when the dissolved hydrogen concentration value C ₁ detected by the sensor 31 is equal to or greater than the target value C of the dissolved hydrogen concentration read from the storage unit 35 (ie, C ₁ ≧ C), the electrolytic current determining unit 33 Judge that the concentration is not insufficient. In this case, the process of step S5-step S7 mentioned above is not performed, but it transfers to the process of step S8 mentioned later.

  As described above, the present embodiment includes the circulation path 27 for circulating the reverse osmosis water 25 treated by the reverse osmosis membrane treatment device 9 and introducing it into the tank 6, and also generates electrolyzed water that is a hydrogen dissolving device. The apparatus 7 is configured to dissolve hydrogen in water containing the reverse osmosis water 25 introduced from the tank 6.

  Therefore, even if the dissolved hydrogen concentration in the reverse osmosis water 25 is reduced due to physical impact or the like in the process of circulating the reverse osmosis water 25, the dissolved hydrogen concentration in the reverse osmosis water is set to a high concentration. Can keep.

  Moreover, since the electrolyzed water production | generation apparatus 7 which performs the electrolysis process of the water containing the reverse osmosis water 25 using the solid polymer membrane 10 is used as a hydrogen dissolution apparatus, with respect to the reverse osmosis water 25 with low electrical conductivity. However, electrolysis can be performed efficiently. Therefore, the dissolved hydrogen concentration in the reverse osmosis water 25 can be efficiently maintained at a high concentration.

In particular, in the present embodiment, the electrolytic current determination unit 33 compares the dissolved hydrogen concentration value C ₁ detected by the sensor 31 with the target value C of the dissolved hydrogen concentration stored in the storage unit 35, and this comparison is performed. On the basis of the result, the electrolysis current is determined. Accordingly, even when the dissolved hydrogen concentration in the reverse osmosis water 25 is reduced due to physical impact or the like in the process of circulating the reverse osmosis water 25, the value C of the dissolved hydrogen concentration detected by the sensor 31 is reduced. ₁ , since the electrolysis process is performed again so as to compensate for the shortage of dissolved hydrogen in the reverse osmosis water 25, the dissolved hydrogen concentration in the reverse osmosis water 25 is maintained at a desired concentration (that is, a target concentration). It becomes possible.

  Next, the sensor 32 detects the dissolved hydrogen concentration of water discharged from the electrolyzed water generating device 7 (that is, water generated by the electrolyzed water generating device 7) (step S8).

  Next, the dissolved hydrogen concentration data detected by the sensor 32 is transmitted to the electrolysis current determining means 33 (step S9).

  Next, the electrolysis current determination means 33 reads data relating to the target value of the dissolved hydrogen concentration stored in the storage means 35 (step S10).

Next, the electrolytic current determining means 33 compares the value C ₂ of the detected concentration of dissolved hydrogen by the sensor 32, the dissolved hydrogen concentration read from the storage unit 35 and a target value C (step S11). That is, the electrolytic current determination means 33 determines whether or not the dissolved hydrogen concentration value C ₂ detected by the sensor 32 is smaller than the target value C of the dissolved hydrogen concentration read from the storage means 35 (that is, C ₂ <C). Is determined (step S11).

Then, the electrolytic current determining unit 33 determines whether the dissolved hydrogen concentration value C ₂ detected by the sensor 32 is smaller than the target value C of the dissolved hydrogen concentration read from the storage unit 35 (ie, C ₂ <C). It is determined that the dissolved hydrogen concentration in the treated water after decomposition is insufficient (decreased), and the dissolved hydrogen concentration of the reverse osmosis water 25 that circulates and enters the electrolyzed water generating device 7 again becomes the target value C. Next, the electrolysis current of the electrolysis process by the electrolyzed water generator 7 is determined (step S12). And the electrolysis current determination means 33 transmits the signal regarding the determined electrolysis current to the electrolysis current supply means 34 which supplies electrolysis current with respect to the electrolyzed water production | generation apparatus 7 (step S13).

  Next, the electrolysis current supply means 34 supplies the electrolysis current based on the input signal to the electrolyzed water generation device 7. In the electrolysis water generation device 7, the dissolved hydrogen concentration of the water that has entered the electrolysis water generation device 7 is increased. The electrolysis process is performed so as to achieve the target value C (step S14).

On the other hand, when the dissolved hydrogen concentration value C ₂ detected by the sensor 32 is equal to or larger than the target value C of the dissolved hydrogen concentration read from the storage unit 35 (ie, C ₂ ≧ C), the electrolytic current determining unit 33 Judge that the concentration is not insufficient. In this case, the above-described steps S12 to S14 are not performed.

As described above, in the present embodiment, the electrolytic current determination unit 33 compares the dissolved hydrogen concentration value C ₂ detected by the sensor 32 with the dissolved hydrogen concentration target value C stored in the storage unit 35. The electrolysis current is determined based on the result of the comparison. Therefore, for example, even if the dissolved hydrogen concentration in the treated water after the electrolysis treatment is decreased due to a decrease in the hydrogen production capacity in the electrolyzed water generating device 7, the dissolved hydrogen detected by the sensor 32 is detected. Based on the concentration value C ₂ , since the electrolysis is performed again to compensate for the shortage of dissolved hydrogen in the reverse osmosis water 25, the dissolved hydrogen concentration in the reverse osmosis water 25 can be maintained at a desired concentration. Become.

  In addition, you may change the said embodiment as follows.

  In the said embodiment, it was set as the structure which uses the electrolyzed water production | generation apparatus 7 as a hydrogen dissolution apparatus, and maintained the dissolved hydrogen concentration in the water containing the reverse osmosis water 25 in desired high density | concentration. Any structure may be used as long as hydrogen can be dissolved therein.

  For example, hydrogen may be dissolved in water containing reverse osmosis water 25 by bringing hydrogen gas into contact with water containing reverse osmosis water 25.

  More specifically, as a hydrogen dissolving apparatus, a hollow fiber is formed using a membrane module including a sleeve to which hydrogen gas is supplied and a hollow fiber disposed inside the sleeve and having a plurality of holes formed therein. A method of bringing hydrogen gas into contact with water containing the reverse osmosis water 25 through the formed holes can be employed.

  Further, by pressurizing water containing reverse osmosis water in which hydrogen gas is dissolved and increasing the concentration of hydrogen gas contained in water containing reverse osmosis water 25, the concentration of dissolved hydrogen in water containing reverse osmosis water 25 is desired. It is good also as a structure kept at a high density | concentration.

  Moreover, in the said embodiment, although the dissolved hydrogen concentration adjustment apparatus 30 was set as the structure provided with the two sensors 31 and the sensor 32, it can be set as the structure provided with at least one of the sensor 31 and the sensor 32 in this invention. .

  That is, as shown in FIGS. 5 and 6, the dissolved hydrogen concentration adjusting device 30 may be configured to include only one of the sensor 31 and the sensor 32. Even in such a configuration, it is possible to obtain the same effect as in the above-described embodiment.

  Moreover, in the said embodiment, although it was set as the structure which dissolves hydrogen in the raw water 2 or the water containing the reverse osmosis water 25 and the raw water 2 by the electrolyzed water production | generation apparatus 7, it is circulated by the circulation path 27 and is put in the tank 6 It is good also as a structure which performs an electrolysis process only with respect to the reverse osmosis water 25 introduced.

DESCRIPTION OF SYMBOLS 1 Manufacturing apparatus for dialysate preparation water 2 Raw water 3 Prefilter 4 Water softening device 5 Activated carbon treatment device 6 Tank 7 Electrolyzed water generation device 8 Electrolyzed water tank 9 Reverse osmosis membrane treatment device 10 Solid polymer membrane 11 Anode 12 Cathode 13 Dielectric Layer 15 Electrolyzer main body 16 Introduction path 17 Treated water 18 Water supply path 19 Dissolved oxygen water 20 Electrolytic tank 21 Drainage path 22 Dissolving device 23 Dialysate supply device 24 Switching valve 25 Reverse osmosis water 27 Circulating path 30 Dissolved hydrogen concentration adjusting device 31 Sensor 32 sensors (other sensors)
33 Electrolytic current determining means 34 Electrolytic current supply means 35 Storage means 36 Reverse osmosis membrane 37 Reverse osmosis water tank 38 Pump

Claims (4)

A tank for storing water,
A hydrogen dissolving apparatus connected to the tank and dissolving hydrogen in the water introduced from the tank;
A reverse osmosis membrane treatment device connected to the hydrogen dissolution device and performing a reverse osmosis membrane treatment on the water in which the hydrogen is dissolved;
A circulation path for circulating the reverse osmosis water treated by the reverse osmosis membrane treatment device and introducing it into the tank;
With
The hydrogen dissolving apparatus generates electrolytic water that dissolves hydrogen in water containing the reverse osmosis water introduced from the tank by performing electrolysis treatment of water containing the reverse osmosis water using a solid polymer membrane. Device,
A sensor that is provided on the water inlet side of the electrolyzed water generator, and that detects the dissolved hydrogen concentration of water including the reverse osmosis water that enters the electrolyzed water generator;
An electrolysis current determining means connected to the sensor for determining an electrolysis current of electrolysis treatment by the electrolyzed water generating device;
An electrolysis current supply means connected to the electrolysis current determining means and the electrolyzed water generating device and supplying an electrolysis current to the electrolyzed water generating device;
Connected to said electrolysis current determining means further comprises a storage means for storing data of the target value of the dissolved hydrogen concentration,
Before SL electrolysis current determining means compares the target value of stored dissolved hydrogen concentration to a value between the storage means of the dissolved hydrogen concentration detected by the sensor, based on the comparison result, the electrolysis current Decide
The electrolysis current supply means supplies the electrolysis current determined by the electrolysis current determination means to the electrolyzed water generation apparatus.   The electrolytic current determining means is configured to provide the reverse osmosis water that enters the electrolyzed water generating device when the value of the dissolved hydrogen concentration detected by the sensor is smaller than the target value of the dissolved hydrogen concentration stored in the storage means. The apparatus for producing dialysate preparation water according to claim 1, wherein the electrolytic current is determined so that a dissolved hydrogen concentration of water containing water becomes the target value. Further provided with another sensor for detecting a dissolved hydrogen concentration of water including the reverse osmosis water that is provided on the outlet side of the electrolyzed water generating device and is discharged from the electrolyzed water generating device;
The electrolytic current determining means compares the value of the dissolved hydrogen concentration detected by the other sensor with a target value of the dissolved hydrogen concentration stored in the storage means, and based on the result of the comparison, The apparatus for producing dialysate preparation water according to claim 1 or 2, wherein an electric current is determined.   The electrolytic current determining unit is configured to perform the reverse operation to enter the electrolyzed water generating device when the value of the dissolved hydrogen concentration detected by the other sensor is smaller than the target value of the dissolved hydrogen concentration stored in the storage unit. 4. The apparatus for producing dialysate preparation water according to claim 3, wherein the electrolysis current is determined so that a dissolved hydrogen concentration of water including osmotic water becomes the target value.

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