JP5360634B2 - Carbon dioxide containing sterilized water generating method and apparatus capable of controlling carbon dioxide containing concentration - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and apparatus for producing weakly acidic sterilizing water which consists mainly of hypochlorous acid or chlorous acid and has an appropriate dissolved carbon dioxide gas content by dissolving the carbon dioxide gas into the sterilizing water. <P>SOLUTION: The sterilizing water which is a diluted aqueous solution of the hypochlorous acid or the chlorous acid flows dividedly into at least two conduits. While through one conduit the sterilizing water is injected or sprinkled into a pressure vessel 13 filled with the carbon dioxide gas, through the other conduit the sterilizing water is calmly conveyed into the pressure vessel. The carbon dioxide gas content dissolved in the sterilizing water is controlled by controlling the amount of the sterilizing water flowing through each conduit. The method thus controls the dissolved carbon dioxide gas content by freely controlling the amount of the sterilizing water flow both in the conduit for injection and in the conduit for calm conveyance. The method thereby functions as an accumulator and, at the same time, dissolves the appropriate amount of the carbon dioxide gas required for stabilizing pH. <P>COPYRIGHT: (C)2007,JPO&amp;INPIT

Description

The present invention relates to a method and apparatus for producing sterilizing water containing hypochlorous acid or chlorous acid as a main component.

  At present, it is widely known that hypochlorous acid or sterilized water containing chlorous acid as a main component is harmless to the human body and has an excellent sterilizing effect. Hypochlorous acid is contained in a sodium hypochlorite aqueous solution in which sodium hypochlorite is diluted with water to have a free chlorine concentration of about 200 ppm and a pH value of about 8.6. It has been known for a long time that the ratio of hypochlorous acid increases by lowering the pH value to make it a weak acid and the pH value becomes almost 100% in the vicinity of 5.

  As an example of a method of producing sterilizing water mainly composed of hypochlorous acid or chlorous acid, a method of mixing an aqueous solution of sodium hypochlorite or an aqueous solution of sodium chlorite with an acidic aqueous solution such as hydrochloric acid is known. Yes.

  As another example of a method for producing sterilizing water containing hypochlorous acid as a main component, a method of directly electrolyzing a hydrochloric acid aqueous solution is known. Furthermore, a method of generating a hypochlorous acid aqueous solution on the positive electrode side by injecting and electrolyzing a sodium chloride aqueous solution into an electrolytic cell having a diaphragm between the positive electrode and the negative electrode, and hydrochloric acid and sodium chloride There is also known a method of directly electrolyzing a mixed aqueous solution.

  In addition, as a method of using the sterilized water generated by the above method, it is generated by mixing a sodium hypochlorite aqueous solution and an acidic aqueous solution with a dedicated device, or generating sterilized water with a dedicated electrolyzer, A method is known in which sterilized water discharged from the apparatus is taken out from a stop valve or a faucet.

Problems to be solved by the invention

The method of producing sterilized water by mixing sodium hypochlorite aqueous solution or sodium chlorite aqueous solution has the advantage that it can easily produce sterilized water, but it is difficult to control the amount of acidic aqueous solution to be mixed. If the amount is too small, the pH value is suddenly lowered to enter the gasification region, and there is a problem that chlorine gas or chlorine dioxide gas is generated.
Because of these problems, disinfectants and bleaching agents containing sodium hypochlorite that are generally available on the market are marked with a caution that prohibits their use with acids.

  For example, in the utility model registration 3058642, diluting water is branched and passed through two pipes, a sodium hypochlorite aqueous solution is forcibly injected into one pipe, and a dilute hydrochloric acid aqueous solution is forced into the other pipe. After the injection, the two pipes are merged to produce a hypochlorous acid aqueous solution. In this method, the pH value of the hypochlorous acid aqueous solution generated as described above is sensitive to the amount of hydrochloric acid added, and even a slight amount of hydrochloric acid enters the gasification region where the pH value is 3 or less. Therefore, the amount of dilute hydrochloric acid added has been controlled so that the pH value of the hypochlorous acid aqueous solution generated from the viewpoint of safety is within the range of 6.5 to 7.5.

  In addition, an aqueous solution of hypochlorous acid is generated on the positive electrode side by electrolyzing the aqueous hydrochloric acid solution or injecting and electrolyzing the aqueous solution of sodium chloride into an electrolytic cell with a diaphragm between the positive and negative electrodes. And a method of directly electrolyzing a mixed aqueous solution of hydrochloric acid and sodium chloride to produce it at a pH value of about 5 where the content ratio of hypochlorous acid is the highest, requires delicate adjustment. Actually, the pH value is about 7 and the electrolysis conditions are controlled with a certain range.

  For example, JP-A-3-258392 discloses a method for producing hypochlorous acid-containing sterilizing water using an electrolytic cell separated by a diaphragm. A sodium chloride solution is added only to the anode, and diluted water (tap water) is used. By carrying out electrolysis while supplying both electrodes, a hypochlorous acid aqueous solution is taken out from the anode side. In this method, when the same amount of dilution water is supplied to both electrodes, a hypochlorous acid-containing sterilizing water having a pH value of about 6 can be obtained in a weakly electrolyzed state. It is not possible to obtain chlorous acid-containing sterilized water. Therefore, in order to obtain a high concentration hypochlorous acid-containing sterilizing water, the electrolysis state must be strengthened, but there is a problem that if the electrolysis state is strengthened, the pH value enters a gasification region of 3 or less.

  JP-A-6-099174 relates to a method for producing sterilized water by electrolysis in a non-diaphragm electrolyzer having no separation membrane between a positive electrode and a negative electrode in the electrolyzer. It discloses a method for producing sterilized water containing hypochlorous acid as a main component by producing high concentration sodium hypochlorite and then diluting with diluted water. In this method, sodium chloride aqueous solution is added to the electrolytic cell, but dilute hydrochloric acid may be mixed so that pH adjustment can be automatically performed when sodium hypochlorite is generated by electrolysis, When trying to produce sterilized water with a desired pH value, it is necessary to adjust the concentration of dilute hydrochloric acid to a predetermined value. On the other hand, when producing sterilized water with a desired concentration, it is necessary to change the amount of dilute hydrochloric acid. The actual situation is that adjustment is difficult and the range of the pH value related to the control of the electrolytic cell is set wide.

  On the other hand, as a method of using the sterilized water generated by the above method, a sodium hypochlorite aqueous solution and an acidic aqueous solution are mixed by a dedicated device, or sterilized water is generated by a dedicated electrolyzer, In order to take out a desired amount of sterilized water discharged from the apparatus, it is common to take it out through a flow rate adjusting valve, a stop valve, or a faucet.

  In that case, the amount of sterilizing water discharged from the device may fluctuate constantly, become extremely small, or even be stopped. There is a problem that the concentration and pH value of the generated sterilizing water become unstable. Therefore, as disclosed in the utility model registration 3058642, the generated sterilized water must be provided with a water storage tank such as an accumulator, which causes a problem of cost and equipment.

Means for solving the problem

  One aspect of the present invention is a method and apparatus for producing a sterilized water having a predetermined chlorine concentration by diluting an aqueous sodium hypochlorite solution or an aqueous sodium chlorite solution with tap water, well water, seawater, or the like. It has a branching process and mechanism for branching and supplying water, well water and seawater to at least two or more pipelines, and an aqueous solution of sodium hypochlorite or sublimation is added to tap water, well water or seawater upstream of the branching process and mechanism. It has a process and mechanism for generating sterilized water by adding an aqueous sodium chlorate solution, or an aqueous solution obtained by diluting an aqueous sodium hypochlorite solution or an aqueous sodium chlorite solution with tap water, well water, seawater, etc., and hydrochloric acid Has a process and mechanism for producing sterilized water by mixing aqueous solutions diluted with tap water, well water, seawater, etc. A process and a device for generating sterilizing water by electrolysis in a diaphragm electrolytic cell or a diaphragm electrolytic cell, a process and a mechanism for supplying carbon dioxide gas to a pressure vessel at a predetermined pressure equal to or higher than atmospheric pressure, and the sterilization It has a process and a mechanism for spraying and / or sprinkling water into the pressure vessel through each of the branched pipes, and further has a process and a mechanism for simple water supply. Disinfection process and mechanism for draining water, and having a water level maintenance process and mechanism for storing sterilized water sprayed and / or sprinkled and sent at a predetermined range of water level at the bottom of the pressure vessel It provides a water generation method and apparatus.

  The second aspect of the present invention is a method and apparatus for producing a sterilized water having a predetermined chlorine concentration by diluting a sodium hypochlorite aqueous solution or a sodium chlorite aqueous solution with tap water, well water, seawater, or the like. It has a branching process and mechanism for branching and supplying tap water, well water and seawater to at least two pipes, and hypochlorine is added to tap water, well water and seawater in one of the pipes branched by the branching process. It has a process and mechanism for generating sterilized water by adding aqueous sodium phosphate solution or aqueous sodium chlorite solution, or diluting aqueous sodium hypochlorite solution or aqueous sodium chlorite solution with tap water, well water, seawater, etc. A process and mechanism for producing sterilized water by mixing an aqueous solution prepared by mixing an aqueous solution obtained by diluting an acidic aqueous solution such as hydrochloric acid, sulfuric acid or acetic acid with tap water, well water, seawater, or the like. And a process and an apparatus for generating sterilized water by electrolyzing water or seawater in a diaphragm membrane electrolytic cell or a diaphragm membrane electrolytic cell, and having a step of supplying carbon dioxide gas to a pressure vessel at a predetermined pressure higher than atmospheric pressure, A step and a mechanism for spraying and / or sprinkling water into the pressure vessel through the respective pipelines branched from the sterilizing water, tap water, well water, and seawater; And having a dilution mixing step and mechanism for mixing the sterilized water jetted and / or sprinkled and delivered with tap water, well water or seawater in the pressure vessel, and the sterilized water diluted and mixed from the pressure vessel It has a drainage process and mechanism for draining, and the sterilized water that has been diluted and sprayed and / or sprinkled and sent with tap water, well water, or seawater is stored at a water level within a predetermined range at the bottom of the pressure vessel. Water level maintenance process There is provided a sterilizing water producing method and apparatus characterized by having a fine mechanism.

A third aspect of the present invention is a method and apparatus for producing a sterilized water having a predetermined chlorine concentration by diluting a sodium hypochlorite aqueous solution or a sodium chlorite aqueous solution with tap water, well water, seawater, or the like. Having a branching process and mechanism for branching and supplying tap water, well water and seawater to at least two or more pipelines, and having a process and mechanism for supplying carbon dioxide gas to the pressure vessel at a predetermined pressure of atmospheric pressure or higher, It has a process and mechanism for spraying and / or sprinkling water into the pressure vessel through the pipes branched from the tap water, well water, and seawater, and further has a process and mechanism for mere water supply And a drainage process and mechanism for draining tap water, well water, and seawater from the pressure vessel, and the tap water, well water, and seawater that has been jetted and / or sprinkled and sent are within a predetermined range at the bottom of the pressure vessel. Water level maintenance work stored at the water level And having a process and mechanism for generating sterilized water by adding sodium hypochlorite aqueous solution or sodium chlorite aqueous solution to tap water, well water or seawater drained from the pressure vessel, or An aqueous solution in which sodium hypochlorite aqueous solution or sodium chlorite aqueous solution is diluted with tap water, well water or seawater, and an aqueous solution in which acidic aqueous solution such as hydrochloric acid, sulfuric acid or acetic acid is diluted with tap water, well water or seawater, etc. It has a process and mechanism for producing sterilizing water by mixing, or has a process and apparatus for producing sterilizing water by electrolyzing a sodium chloride aqueous solution or seawater in a diaphragm electrolyzer or a diaphragm electrolyzer. And a sterilizing water generating method and apparatus.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a diagram showing a typical structure of the present invention. Raw water such as tap water, well water, and seawater is supplied through the pipe line 1, passes through the check valve 2, passes through the electric on-off valve 3, and is supplied to the pump 4.

  The raw water pressurized by the pump 4 is sent to the pipe 6 through the flow meter 5. On the other hand, the sodium hypochlorite aqueous solution stored in the tank 7 is pressurized by the pump 8, and is added to the raw water in the pipe line 6 by the flow path switching valve 9 via the adding section 10. The sterilized water having a predetermined chlorine concentration by adding the sodium hypochlorite aqueous solution is branched and fed to the pipe lines 202 and 203 at a predetermined ratio by the branch valve 201 provided in the pipe line 12. The sterilized water sent is sent to the space 14 above the pressure vessel 13, and the sterilized water sent to the branch pipe 202 is sent to the space 40 of the pressure vessel 13. At this time, scattering is suppressed by the scattering preventing member 204 so that the sterilized water sent from the branch pipe 202 to the space 40 does not form fine water droplets in the space 40.

  Further, the carbon dioxide gas sent from the carbon dioxide cylinder 16 to the pipe line 39 via the manual valve 17 is decompressed by the two pressure reducing valves 18 and 19, passes through the electric on-off valve 20 and the check valve 21, and is further branched. And is supplied to the space 40 in the pressure vessel. At this time, the electric opening / closing valve 34 is in a closed state, preventing the electric opening / closing valve 34 from flowing from the branching portion 23 through the conduit 33 to the conduit 35. A pressure gauge 22 is installed in the pipe line 39 so that the pressure in the space 40 to which carbon dioxide gas is supplied can be detected.

Further, a float 25 provided with a magnet 26 is provided in a space 40 in the pressure vessel 13, and limit switches 27, 28, 29, and 30 that react to the magnet 26 are provided outside the pressure vessel 13.
A plurality of injection holes 15 are provided in the partition wall 41 that separates the spaces 14 and 40 in the pressure vessel 40 and have a positional relationship such that the injection flows injected from at least two injection holes collide.

The sterilizing water sent to the space 14 is ejected as fine water droplets into the space 40 so as to collide with each other from the ejection holes 15. Thereby, the carbon dioxide gas filled in the space 40 is absorbed by the fine water droplets. On the other hand, the sterilized water sent into the space 40 through the pipe line 202 is gently stored in the bottom portion along the flat air surface in the space 40. Therefore, carbon dioxide gas hardly dissolves in the sterilized water sent from the pipe line 202.
Fine water droplets that have absorbed carbon dioxide gas and sterilized water fed from the water feed port 207 are stored at the bottom of the pressure vessel 13 and mixed with each other.

  Here, if the ratio of the sterilizing water sent to the pipes 202 and 203 by the branch valve 201 is changed, the dissolved concentration of carbon dioxide in the sterilizing water stored at the bottom of the pressure vessel 13 changes. That is, when the amount of the sterilizing water sent to the pipe line 202 is increased, the carbon dioxide dissolved concentration of the sterilizing water stored at the bottom of the pressure vessel 13 decreases, and conversely, the amount of the sterilizing water sent to the pipe line 203 Is increased, the carbon dioxide dissolved concentration of the sterilizing water stored at the bottom of the pressure vessel 13 increases. As a result, the pH of the produced sterilizing water can be adjusted to a predetermined value.

  A pipeline 31 is connected to the bottom of the pressure vessel 13, and merges at a junction 32 with a pipeline 35 connected to an electric opening / closing valve 34. A pipe 36 is connected to the junction, and a dissolved carbon dioxide concentration meter 208 is provided in the pipe 36 to measure the carbon dioxide concentration in the sterilized water drained from the pressure vessel 13. Further, instead of the dissolved carbon dioxide concentration meter 208, a pH meter may be installed to measure the pH value of the sterilized water to be drained. Further, a branching portion 42 is provided downstream thereof, and the branching portion 42 branches into pipes 43 and 45. An electric opening / closing valve 44 is provided in the pipe line 43, and a manual or electric opening / closing valve 37 is provided in the pipe line 45.

  Next, the operation will be described in detail. First, an initial preparation operation will be described. The supplied tap water, well water, or raw seawater is fed by a pump 4, and the flow rate is measured by a flow meter 5. In accordance with the flow rate, a predetermined amount of aqueous sodium hypochlorite solution is sent to the addition unit 10 by the pump 8 and added to the raw water.

  The sterilizing water having a predetermined chlorine concentration by adding the sodium hypochlorite aqueous solution is jetted into the space 40 from the jet hole 15 so as to collide with each other, and the water is gently fed into the space 40 from the water feed port 207. Is done. At this time, the electric open / close valve 20 and the manual or electric open / close valve 37 are closed, and the electric open / close valves 34 and 44 are open. Further, the pipe line 31 is narrowed so that the flow rate drained through the electric opening / closing valve 44 is smaller than the total amount of the sterilizing water injected and supplied from the injection hole 15 and the sterilizing water supplied from the water supply port 207. Alternatively, a throttle 212 or the like is provided in the pipeline 31. The sprayed sterilizing water accumulates in the space 40 of the pressure vessel 13, and accordingly, the air in the space 40 enters the pipeline 23 from the pipeline 24, passes through the pipeline 35 through the electric opening / closing valve 34, and joins. In part 32, the wastewater is combined with drainage and discharged through a conduit 43 and an electric opening / closing valve 44.

  When the water level in the space 40 rises, the float 25 also rises and the limit switches 27, 28, 29, and 30 react in turn. When the limit switch 30 reacts, the electric opening / closing valve 34 is closed and the electric opening / closing valve 20 is opened. As a result, the carbon dioxide gas is depressurized to a predetermined pressure by the pressure reducing valves 18 and 19, and is supplied into the space 40 from the carbon dioxide gas cylinder 16 through the conduit 24. By these operations, the air in the space 40 is completely discharged, and the gas in the space 40 is only carbon dioxide.

  Due to the pressure of the supplied carbon dioxide gas, the amount of drainage from the pipe line 31 becomes larger than the total amount of sterilized water injected and supplied from the injection hole 15 and sterilized water supplied from the water supply port 207, and gradually the water level in the space 40. Descends. When the water level falls and the limit switch 28 reacts, the electric on-off valves 20 and 44 are closed. Then, the water level rises gradually, and the pressure in the space 40 rises accordingly. The pressure is detected by the pressure gauge 22, and when the set pressure is exceeded or the limit switch 29 reacts, the pump 4 is stopped, the electric on-off valve 3 is closed to stop the water supply, and the preparation completion is displayed. Inform them that they are ready to use.

  The following describes the normal operation. After the above preparatory operation is completed, if the water is discharged by opening the manual or electric opening / closing valve 37, the water level in the space 40 is lowered and the limit switch 28 reacts. Along with this, the electric on-off valve 3 is opened and the pump 4 is operated to start water supply. Then, the water level in the space 40 rises again, rises to the position of the limit switch 29, and the limit switch 29 reacts. When the limit switch 29 reacts, the electric opening / closing valve 20 is opened and the supply of carbon dioxide gas is started. Then, the pressure in the space 40 rises, this time the water level gradually decreases and again falls to the water level of the limit switch 28, and the limit switch 28 reacts. By this signal, the electric opening / closing valve 20 is closed to stop the supply of carbon dioxide gas. Then, the carbon dioxide gas in the space 40 is absorbed by the injected sterilizing water, the pressure in the space 40 decreases, and the water level starts to rise gradually. By repeating this, the water level in the space 40 can be maintained between the limit switches 28 and 29.

  In addition, if the manual operation or the electric opening / closing valve 37 is throttled or closed in this normal operation state, the amount of water discharged decreases, so the sterilized water supplied from the injection hole 15 and the water supply port 207 rather than the drainage from the space 40. The total amount of sterilized water to be sent always increases, and even if the electric on-off valve 20 is opened and carbon dioxide is supplied, the water level in the space 40 rises and the pressure in the space 40 rises. When the pressure rises and exceeds the set pressure, the pump 4 is stopped and the electric open / close valve 3 is closed to stop water supply regardless of the water level control during the normal operation. When the water level in the space 40 drops again due to water discharge and the limit switch 28 reacts, the pump 4 is operated again, the electric on-off valve 3 is opened, water supply is started, and normal operation is resumed.

By this operation, even when the amount of sterilizing water discharged manually or through the electric open / close valve 37 is very small or fluctuates, it is stable without newly providing a tank such as an accumulator. Thus, sterilized water containing carbon dioxide can be generated.

  Furthermore, even if the water level in the pressure vessel 13 rises and the limit switch 30 detects the water level, if the pressure in the pressure vessel 13 does not exceed the predetermined pressure, the supply of carbon dioxide gas is insufficient. It also has a function to display a warning.

  In the above description, when the pressure in the pressure vessel 13 exceeds a predetermined pressure, the pump 4 is stopped and the electric opening / closing valve 3 is closed to stop the water supply, but another one is provided between the limit switches 29 and 30. When a limit switch is provided and the limit switch detects the water level, the pump 4 may be stopped and the electric opening / closing valve 3 may be closed to stop water supply. And even if the limit switch detects the water level, if the pressure in the pressure vessel 13 does not exceed a predetermined pressure, a shortage of carbon dioxide gas is detected and a warning is displayed.

  Next, another operation will be described in detail with reference to FIG. First, an initial preparation operation will be described. The supplied tap water, well water, or raw seawater is fed by a pump, and the flow rate is measured by a flow meter 5. In accordance with the flow rate, a predetermined amount of aqueous sodium hypochlorite solution is sent to the addition unit 10 by the pump 8 and added to the raw water.

  The sterilized water having a predetermined chlorine concentration by adding the sodium hypochlorite aqueous solution is branched and fed to the pipes 202 and 203 at a predetermined ratio by the branch valve 201 provided in the pipe 12. The sterilized water sent to the pressure vessel 13 is sent to the space 14 above the pressure vessel 13, and the sterilized water sent to the branch pipe 202 is sent into the space 40 of the pressure vessel 13.

  At this time, the electric open / close valve 20 and the manual or electric open / close valve 37 are closed, and the electric open / close valves 34 and 44 are open. Further, the pipe line 31 is narrowed so that the flow rate drained through the electric opening / closing valve 44 is smaller than the total amount of the sterilizing water injected and supplied from the injection hole 15 and the sterilizing water supplied from the water supply port 207. Alternatively, a restriction or the like is provided in the pipe 31. The sprayed sterilizing water accumulates in the space 40 of the pressure vessel 13, and accordingly, the air in the space 40 enters the pipeline 23 from the pipeline 24, passes through the pipeline 35 through the electric opening / closing valve 34, and joins. In part 32, the wastewater is combined with drainage and discharged through a conduit 43 and an electric opening / closing valve 44.

  When the water level in the space 40 rises, the float 25 also rises and the limit switches 27, 28, 29, and 30 react in turn. When the limit switch 30 reacts, the electric open / close valves 3 and 34 are closed to stop the pump 4 and the electric open / close valve 20 is opened. As a result, the carbon dioxide gas is depressurized to a predetermined pressure by the pressure reducing valves 18 and 19, and is supplied into the space 40 from the carbon dioxide gas cylinder 16 through the conduit 24. By these operations, the air in the space 40 is completely discharged, and the gas in the space 40 is only carbon dioxide.

  The sterilized water in the space 40 is drained from the pipe line 31 by the pressure of the supplied carbon dioxide gas, and the water level in the space 40 gradually falls. When the water level falls and the limit switch 29 reacts, the electric on-off valve 44 is closed and a ready indication is displayed to notify that it is ready for use.

  The following describes the normal operation. After the above preparatory operation is completed, if the water is discharged by opening the manual or electric opening / closing valve 37, the water level in the space 40 is lowered and the limit switch 28 reacts. Along with this, the electric on-off valve 3 is opened and the pump 4 is operated to start water supply. Then, the water level in the space 40 rises again, rises to the position of the limit switch 29, and the limit switch 29 reacts. When the limit switch 29 reacts, the electric on-off valve 3 is closed and the pump 4 is stopped to stop water supply. This time, the water level gradually decreases and again falls to the water level of the limit switch 28, and the limit switch 28 reacts. By repeating this, the water level in the space 40 can be maintained between the limit switches 28 and 29.

  Moreover, if the electric or open / close valve 37 is manually throttled or closed while water is being supplied by the pump, the water discharge amount decreases, so that the water level in the space 40 increases rapidly and the pressure in the space 40 increases. Will do. In this case, when the pressure rises and exceeds the set pressure, the pump 4 is stopped and the electric on-off valve 3 is closed to supply water regardless of the water level control during the normal operation. Stop. When the water level in the space 40 drops again due to water discharge and the limit switch 28 reacts, the pump 4 is operated again, and the electric on-off valve 3 is opened to start water supply to return to normal operation.

  In any of the above operations, the concentration of carbon dioxide dissolved in the sterilized water is measured by the dissolved carbon dioxide concentration meter provided in the pipe 36, and if the concentration is higher than a preset value, the branching is performed. The valve 201 reduces the water supply to the injection hole 15 and increases the water supply to the water supply port 207. Thereby, the injection from the injection holes 15 into the space 40 is reduced, and the amount of carbon dioxide dissolved can be reduced. Conversely, when the value by the dissolved carbon dioxide concentration meter is lower than the predetermined concentration, the amount of water supplied to the injection holes 15 is increased, the amount of water supplied to the water supply ports 207 is decreased, and the amount of carbon dioxide dissolved is increased.

  Further, this apparatus has a bubble removing mechanism for removing bubbles generated in a pipe for supplying the sodium hypochlorite aqueous solution. That is, the sodium hypochlorite aqueous solution is sucked up by the pump 8 from the tank 7 in which the sodium hypochlorite aqueous solution is stored and sent to the flow path switching valve. It is sent to the pipeline 11 and returned to the tank 7 again. By performing this circulating feed for a predetermined time, bubbles in the pipeline can be sent to the tank 7 and removed from the pipeline.

  Moreover, this apparatus has a control (not shown) which controls the quantity of the sodium hypochlorite aqueous solution added in the addition part 10, and changes the chlorine concentration of sterilization water, and changes this chlorine concentration. When the operation is performed, in order to reduce the influence of the chlorine concentration of the sterilizing water stored in the space 40 as much as possible, the electric open / close valve 44 is opened and the automatic operation is performed for a predetermined time, and the electric open / close valve 44 is closed. At the same time, the pump 4 is stopped and the electric on-off valve 3 is closed to display completion. Thus, it also has a function of discharging the sterilized water stored in the space 40 and replacing it with sterilized water having a newly set chlorine concentration.

  Furthermore, when the pressure in a pressure vessel becomes lower than a predetermined value, it also has a function to display that the supply of carbon dioxide gas is insufficient.

The configuration of the apparatus according to the present invention will be described with reference to FIGS.
Moreover, the operation | movement in FIGS. 2-12 is the same as that of the operation | movement demonstrated in FIG. 1 fundamentally, and the difference is the production | generation methods of a sterilization water, and the connection pattern of a pipe line.

  FIG. 2 is an explanatory diagram of the case where sterilized water is generated by adding only an aqueous sodium hypochlorite solution to raw water such as tap water, well water, and seawater, and is a diagram schematically showing FIG. In FIG. 1, the pipe line 202 branched by the branch valve 201 is connected to the upper part of the pressure vessel 13, but as shown in FIG. Water may be directly fed into the sterilized water stored in the tank.

  FIG. 3 shows an example in which an aqueous solution of sodium hypochlorite and an acidic aqueous solution such as dilute hydrochloric acid are added to raw water to produce sterilized water. The aqueous solution of sodium hypochlorite is adjusted to pH with an acid other than carbonic acid (preferably hydrochloric acid). This is an embodiment for temporarily adjusting. The raw water supplied to the pipe line 1 is supplied to the pump 4 through the check valve 2 and the electric opening / closing valve 3. The pressure is applied by the pump 4, the flow rate is measured by the flow meter 5, and the water is sent to the pipe 6.

  On the other hand, the sodium hypochlorite aqueous solution and dilute hydrochloric acid are sucked up from the tanks 7 and 51 by the pumps 8 and 50 according to the flow rate, and first, the sodium hypochlorite aqueous solution is added to the raw water in the addition unit 10 to the pipe 47. Next, dilute hydrochloric acid is added at the addition section 46 and sent to the pipe 48. As a result, the sodium hypochlorite aqueous solution is temporarily adjusted to a weak alkali or neutral with dilute hydrochloric acid, or temporarily adjusted to a desired pH value. Thereafter, the water is branched by the branch valve 201 and sent to the pipes 202 and 203, respectively, and injected into the pressure vessel 13 and supplied with water. As in FIG. 1, the carbon dioxide gas is supplied from the carbon dioxide gas cylinder 16 to the pressure vessel 13 through the manual valve 17, the pressure reducing valves 18 and 19, the electric opening / closing valve 20, and the check valve 21. The sterilized water in which the carbon dioxide gas is dissolved in the pressure vessel 13 is drained from the vicinity of the bottom of the pressure vessel 13 through the conduit 31 and discharged by opening the manual or electric opening / closing valve 37.

  FIG. 4 is an example showing a method of adding a sodium hypochlorite aqueous solution and dilute hydrochloric acid to raw water through separate pipes, and then mixing each added aqueous solution to produce sterilizing water. The supplied raw water is branched and supplied to the pipes 53 and 54 downstream of the flow meter 5, an aqueous sodium hypochlorite solution is added through the pipe 53, and dilute hydrochloric acid is added through the pipe 54. The aqueous solutions join together and are sent to the pipe 55. In this case, although not shown, a mixing mechanism for promoting mixing may be provided at the junction of the pipes 53 and 54. Also in this case, the pH of the aqueous sodium hypochlorite solution is temporarily adjusted with dilute hydrochloric acid. The other contents are the same as in FIG.

  FIG. 5 shows the sodium hypochlorite solution in FIG. 2 by adding a sodium chloride aqueous solution to a part of the raw water instead of supplying the sodium hypochlorite aqueous solution from the tank 7 and electrolyzing it in a non-diaphragm electrolytic cell. 3 shows an example of producing an aqueous solution. That is, the raw water is branched and supplied to the pipes 58 and 59 downstream of the flow meter 5, and the sodium chloride aqueous solution is pressure-supplied to the raw water from the tank 60 by the pump 61 in the pipe 59 and added by the adding unit 62. The raw water to which the aqueous sodium chloride solution has been added is supplied to the diaphragm electrolyzer 63 and electrolyzed to produce a sodium hypochlorite aqueous solution. The generated sodium hypochlorite aqueous solution passes through the pipe line 64 and is added to the raw water flowing through the pipe line 58 by the addition unit 65.

  FIG. 6 shows an embodiment in which an electrolytic cell 71 having a diaphragm is used instead of the non-diaphragm electrolytic cell in FIG. That is, of the raw water branched and supplied to the pipes 58 and 59, an aqueous sodium chloride solution is added to the raw water supplied to the pipe 59, and the raw water is branched and supplied to the pipes 66 and 67. 71 is supplied to the anode side and the cathode side, respectively, and electrolyzed, and the electrolyzed water discharged from the anode and the electrolyzed water discharged from the cathode are merged again and sent to the pipe line 70. Add to flowing raw water. At this time, a part of the electrolyzed water discharged from the cathode may be used without being used, and the remaining electrolyzed water may be discarded.

In FIGS. 5 and 6, the raw water is supplied to the electrolyzer having the diaphragm electrolyzer and the diaphragm, the raw water is branched and supplied downstream of the flow meter 5 and a part of the raw water is supplied to the electrolyzer. All of the raw water may be supplied to the electrolytic cell without branching downstream of the total 5.
In that case, a predetermined voltage is applied according to the flow rate measured by the flow meter 5.

  FIG. 7 shows an embodiment in which a sodium hypochlorite aqueous solution is added after the raw water is branched while the pipe is branched by the branch valve 201 after FIG. 2 generates sterilizing water. That is, immediately after the flow meter 5, the branch valve 206 branches to the pipes 210 and 211, and sodium hypochlorite is added to the raw water sent to the pipe 211 via the addition unit 10, and then inside the pressure vessel 13. The raw water jetted to the other pipe 210 is directly fed into the pressure vessel 13.

In FIG. 7, the sodium hypochlorite aqueous solution is added to the raw water by the pump 8 from the tank 7. However, as shown in FIGS. 3 to 6, the sodium hypochlorite aqueous solution and dilute hydrochloric acid may be added. Electrolyzed water electrolyzed in a diaphragm electrolytic cell or an electrolytic cell having a diaphragm may be added.
Further, in FIG. 7, sterilizing water is injected into the pressure vessel 13 and raw water is supplied into the pressure vessel 13, but raw water is injected into the pressure vessel 13 and sterilizing water is supplied into the pressure vessel 13. You may do it.

  In FIG. 8, the raw water is branched and supplied to the pipes 53, 54 and 205, the sodium hypochlorite aqueous solution is added to the raw water in the pipe 53, and dilute hydrochloric acid is added to the raw water in the pipe 54, and then sodium hypochlorite is added. The raw water to which the aqueous solution has been added is supplied to the pressure vessel 13 via the conduit 57, and the raw water to which dilute hydrochloric acid has been added is separately supplied to the pressure vessel 13 via the conduit 56, preferably provided in the pressure vessel 13. It has the structure where it injects so that it may collide with each other from the injected injection hole. The raw water sent to the pipe 205 is directly sent to the pressure vessel 13. By the collision of the jet flow, the raw water to which the sodium hypochlorite aqueous solution is added and the raw water to which dilute hydrochloric acid is added and the carbon dioxide gas can be dissolved simultaneously and efficiently. Although not shown, the sodium hypochlorite aqueous solution and hydrochloric acid may be sprayed to the pressure vessel 13 without being collided, or one of them may be fed to the water surface in the pressure vessel 13.

  FIG. 9 shows an embodiment in which the sodium hypochlorite aqueous solution is added downstream of the pressure vessel, whereas FIG. 2 shows the addition of the sodium hypochlorite aqueous solution upstream of the pressure vessel 13. That is, the raw water pressurized and supplied by the pump 4 is branched into the pipelines 202 and 203 by the branch valve 201, and injected and fed into the pressure vessel 13, respectively, so that the carbon dioxide gas is dissolved. The carbon dioxide-containing raw water discharged from the pressure vessel 13 is added with sodium hypochlorite aqueous solution via the addition unit 10 in the pipe 36, and after measuring the dissolved carbon dioxide concentration or pH, the branching unit 42 is added. And is sent to the manual or electric open / close valve 37.

  In FIG. 9, the sodium hypochlorite aqueous solution is added from the tank 7 by the pump 8. However, as shown in FIGS. 3 to 6, sodium hypochlorite and dilute hydrochloric acid may be added. Alternatively, electrolyzed water electrolyzed in an electrolytic cell having a diaphragm may be added. Needless to say, dilute hydrochloric acid may be added upstream of the tank.

  In FIG. 10, the pipe line 202 branched from the branch valve 201 in FIG. 2 is connected to the pressure vessel 13, whereas the pipe line 202 is connected to the pipe line 36 downstream of the drainage pipe 31 of the pressure vessel. An embodiment is shown. That is, after adding the sodium hypochlorite aqueous solution to the raw water at the addition unit 10, the sterilizing water that is branched and supplied to the pipes 202 and 203 by the branch valve 201 and is sent to the pipe 203 is injected into the pressure vessel 13. One pipe line 202 is connected to a pipe line 36 located downstream of the drain line 31 of the pressure vessel 13, and the sterilized water sent to the pipe line 202 is injected into the pressure vessel 13 and contains carbon dioxide gas. It is mixed with sterilizing water at the junction 209 and sent to a manual or electric open / close valve through a dissolved carbon dioxide concentration meter.

  In FIG. 10, the sodium hypochlorite aqueous solution is added to the raw water by the pump 8 from the tank 7. However, as shown in FIGS. 3 to 6, sodium hypochlorite and hydrochloric acid may be added. Electrolyzed water electrolyzed in an electrolytic cell or an electrolytic cell having a diaphragm may be added.

  In FIG. 11, the pipe 210 branched from the branch valve 206 in FIG. 7 is connected to the pressure vessel 13, whereas the pipe 210 is connected to the pipe 36 located downstream of the drainage pipe 31 of the pressure vessel 13. The connected embodiment is shown. That is, the sodium hypochlorite aqueous solution is added by the addition unit 10 to the raw water branched into the pipes 210 and 211 by the branch valve 206 immediately after the flow meter 5 and sent to the pipe 211, and is supplied to the pressure vessel 13. After being injected to dissolve the carbon dioxide gas, the water passes through the water distribution pipe 31 and is fed to the pipe 36. On the other hand, the raw water sent to the pipe line 210 is sent to the junction 209 provided in the pipe line 36 and mixed with the sterilized water discharged from the pressure vessel 13. The mixed sterilizing water is sent to a manual or electric open / close valve through a dissolved carbon dioxide concentration meter.

  In FIG. 11, the sodium hypochlorite aqueous solution is added to the raw water by the pump 8 from the tank 7, but as shown in FIGS. 3 to 6, sodium hypochlorite and hydrochloric acid may be added. Electrolyzed water electrolyzed in an electrolytic cell or an electrolytic cell having a diaphragm may be added.

  In FIG. 12, the pipe 205, which is one of the pipes 53, 54 and 205 branched into three in FIG. 8, is connected to the pressure vessel 13, whereas the pipe 205 is connected to the flow meter 5. An embodiment is shown in which a branch valve 206 is branched into a pipe line 205 immediately after and is connected to a pipe line 36 located downstream of the drain pipe 31 of the pressure vessel 13. That is, after the pipe 205 is branched immediately after the flow meter 5, the raw water branched and supplied to the pipes 53 and 54 is added with the sodium hypochlorite aqueous solution through the addition unit 10 in the pipe 53. In the pipe line 54, dilute hydrochloric acid is added through the adding section 46, and the respective aqueous solutions are separately supplied to the pressure vessel 13 and injected from the injection holes provided in the pressure vessel 13 so as to collide with each other. And it is sent to the pipe line 36 through the drain pipe line 31 of the pressure vessel 13. On the other hand, the raw water sent to the pipe 205 is sent to a merging section provided in the pipe 36, merged with sterilized water discharged from the pressure vessel, mixed, and manually or electrically passed through a dissolved carbon dioxide concentration meter. Sent to the open / close valve.

  A method for spraying or sprinkling sterilizing water into the pressure vessel 13 will be described with reference to FIGS. FIG. 13 shows a state in which the injection hole 15 is provided facing the partition wall 41 shown in FIG. The sterilizing water supplied to the space 14 in FIG. 1 is ejected vigorously from the injection holes 15 provided in the partition wall 41 and collides with each other to form fine water droplets, and the carbon dioxide gas is efficiently used in the space 40 filled with carbon dioxide gas. Can dissolve well.

  In FIG. 14, the injection holes 15 provided in the partition wall 41 are located in the vicinity, and the sterilizing water injected from the respective injection holes collides with each other immediately after the injection. Thereby, the injected sterilized water becomes fine water droplets, and the carbon dioxide can be efficiently dissolved in the space 40 filled with the carbon dioxide.

  FIG. 15 shows a state where a spray nozzle in which the sterilizing water sprayed from the nozzle is mist-like is provided in the partition wall 41. In order to make the sterilized water sprayed by the nozzle unit into fine water droplets, the nozzles do not need to be arranged so as to collide with each other, and only one nozzle or two or more nozzles may be used.

  13 to 15, the injection holes are provided in the partition wall 41 shown in FIG. 1. However, the injection holes are directly provided in the pressure vessel, and the sterilizing water is connected to each injection hole by a pipe line. The position of the injection hole may be on the side surface or the top of the pressure vessel, and is not particularly restricted.

  FIG. 16 shows that the means for maintaining the level of the sterilizing water stored in the pressure vessel 13 within a predetermined range is the electric flow control valve 103 provided downstream of the pump 4, the drain line 31 from the pressure vessel 13, and the pressure If the air vent pipes 33 and 35 connected to the upper part of the container are joined downstream of the joining part 32 where the air venting pipes 33 and 35 join, and further provided with the joining part 209, it is performed by an electric flow rate adjusting valve 102 provided downstream of the joining part 209. An example is shown. In FIG. 1, the method for maintaining the water level in the pressure vessel 13 is performed depending on whether carbon dioxide gas is supplied or stopped, or the pump 4 is stopped and the electric on-off valve 3 is closed to stop water supply. However, in this embodiment, when the water level falls and the limit switch 28 detects the water level, the electric flow rate adjusting valve 102 is operated to reduce the flow rate and reduce the amount of drainage from the pressure vessel 13. Further, when the water level rises and the limit switch 29 detects the water level, the electric flow rate adjusting valve 102 returns to its original state, the electric flow rate adjusting valve 103 is activated to reduce the flow rate, and the amount of water supplied to the pressure vessel 13 is reduced. To do. As a result, the water level in the pressure vessel 13 is maintained between the limit switches 28 and 29.

  Here, if the water level in the pressure vessel 13 is lowered while both the electric flow rate adjusting valves 102 and 103 are completely open, only the electric flow rate adjusting valve 102 may be used. If the water level rises at the same time, the water level can be maintained only by the electric flow rate adjusting valve 103.

    In FIG. 16, sodium hypochlorite aqueous solution is added to the raw water by the pump 8 from the tank 7, but as shown in FIGS. 3 to 6, sodium hypochlorite and hydrochloric acid may be added. Electrolyzed water electrolyzed in an electrolytic cell or an electrolytic cell having a diaphragm may be added, or sterilizing water may be generated after branching of raw water as shown in FIGS. 7 and 8, or sterilized as shown in FIG. The generation of water may be downstream of the pressure vessel 13, or at least one of the branch lines of raw water may be connected downstream of the pressure vessel 13 as shown in FIGS. 10, 11, and 12.

  Further, in the above embodiment, the electric opening / closing valve 44 is provided via the branch portion 42, but an electric channel switching valve may be provided in the branch portion 42.

  In FIG. 1, when the pressure in the pressure vessel 13 exceeds a predetermined pressure, the pump 4 is stopped and the electric on-off valve 3 is closed to stop water supply. Electric open / close valves may be provided in the pipeline (not shown), and the electric open / close valves may be closed when the pump is stopped.

  Further, in FIG. 1, the ratio of the flow rate flowing through each branch line after branching is adjusted by a branch valve. However, a flow rate adjustment valve may be provided in each pipe line (not shown) to adjust each flow rate. .

  Furthermore, although there are two branch pipes in FIG. 1, three or more branch pipes are provided, electric open / close valves are installed in the respective pipe lines (not shown), and the open / close of each electric open / close valve is selected, Depending on the combination of pipes to feed water, the flow rate adjustment mechanism that can adjust the flow rate of water to be jetted and fed, or that can individually adjust the flow rate flowing through each pipe at the branch of those pipes (not shown), You may adjust the flow volume which flows through each pipe line, and may adjust each amount of water sent and injected.

  Moreover, in all the above-mentioned Examples, sodium hypochlorite aqueous solution is taken as an example, but of course, sodium chlorite aqueous solution may be used.

  In all the above-described embodiments, the pump 4 is used for water supply of tap water, well water, and seawater. However, when the supply pressure is sufficiently high in tap water, or from another water supply pump or the like in well water or seawater. When pressure is supplied, the pump 4 may be omitted.

  Furthermore, in all the embodiments described above, the detection of the water level in the pressure vessel 13 is detected by the float 25 having the magnet 26 and the limit switches 27 to 30, but other sensors such as a sensor that can directly detect the liquid level are used. The detector may be used. Moreover, all the above-mentioned addition parts 10, 46, 62, and 65 are equipped with the check valve.

Effect of the invention

  By carrying out the present invention, alkaline sodium hypochlorite aqueous solution or sodium chlorite aqueous solution is used to adjust sterilized water or chlorine dioxide mainly composed of weakly acidic hypochlorous acid by adjusting the pH of carbon dioxide gas. It becomes sterilizing water having a main component, and the sterilizing effect can be dramatically increased without adding an acidic aqueous solution. In addition, even when an aqueous solution of sodium hypochlorite or an aqueous solution of sodium chlorite is mixed with an acidic aqueous solution such as hydrochloric acid to produce sterilized water, the pH stability of the carbon dioxide gas can be ensured, and the stability of the acidic aqueous solution can be secured. Changes in the pH value with respect to the added amount become insensitive, and even if the ratio of the added amount of acidic aqueous solution and sodium hypochlorite aqueous solution or sodium chlorite aqueous solution changes slightly, chlorine gas will not be generated, which has been a problem in the past. The danger that has been done can also be eliminated.

  Furthermore, injection and water supply to a pressure vessel for dissolving carbon dioxide gas in sterilized water are effective for mixing sodium hypochlorite aqueous solution, sodium chlorite aqueous solution and raw water, and acidic aqueous solution. It acts as a storage tank such as an accumulator, and even if the amount of sterilizing water used is constantly changing, extremely small, or even stopped, there is no need to install a new accumulator However, the concentration and pH value of the produced sterilizing water can be stabilized.

  Further, when used as an accumulator, in order to send sterilizing water to a water discharge valve or faucet installed downstream of the pressure vessel 13 as an accumulator, the pressure in the pressure vessel 13 needs to be at least about 0.2 MPa. It is. Then, the amount of dissolved carbon dioxide increases and the consumption of carbon dioxide increases. By using the method according to the present invention, the amount of carbon dioxide dissolved in the pressure vessel can be controlled, so that the pH value of the produced sterilizing water can be controlled to a predetermined value and the consumption of carbon dioxide can be suppressed. Running costs can be reduced.

Shown is a representative embodiment of the present invention. An example in which a hypochlorous acid aqueous solution is added to raw water to produce sterilized water is shown. An example of producing sterilized water by adding hypochlorous acid aqueous solution and dilute hydrochloric acid to raw water is shown. Another embodiment for producing sterilized water by adding hypochlorous acid aqueous solution and dilute hydrochloric acid to raw water is shown. An example is shown in which a sodium hypochlorite aqueous solution generated by electrolyzing a sodium chloride aqueous solution in a non-diaphragm electrolytic cell is added to raw water to produce sterilized water. An example is shown in which a sodium chloride aqueous solution is electrolyzed in an electrolytic cell having a diaphragm, and an aqueous solution produced by mixing electrolyzed water produced on the anode side and the cathode side is added to the raw water to produce sterilized water. An example in which a sodium hypochlorite aqueous solution is added to the branched raw water to produce sterilized water is shown. An example of producing sterilizing water by adding hypochlorous acid aqueous solution and dilute hydrochloric acid to raw water and then injecting each of them in a pressure vessel by collision is shown. An example in which an aqueous sodium hypochlorite solution is added downstream of a pressure vessel to produce sterilized water is shown. An embodiment is shown in which one of the branches branched after adding sodium hypochlorite aqueous solution to raw water to produce sterilizing water is connected downstream of the pressure vessel. An example in which a sodium hypochlorite aqueous solution is added to the raw water after branching to generate sterilizing water, and one of the branched pipes is connected downstream of the pressure vessel. Sterilize by splitting the raw water into three pipes, adding sodium hypochlorite aqueous solution to one pipe, adding dilute hydrochloric acid to the second pipe, and injecting each in a pressure vessel. An example is shown in which water is generated and a third conduit is connected downstream of the pressure vessel 13. An embodiment is shown in which the injection holes are arranged facing each other and the injection flows collide with each other. An embodiment is shown in which the injection holes are arranged adjacent to each other so that the injection flows collide with each other An embodiment in which the injection hole is a spray nozzle is shown. An embodiment is shown in which the method for maintaining the water level in the pressure vessel is an electric flow rate adjusting valve provided on the water supply side and the water discharge side.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pipe line, 2 Check valve, 3 Electric open / close valve, 4 Pump, 5 Flowmeter 6 Pipe line, 7 Tank, 8 Pump, 9 Flow path switching valve 10 Addition part, 11 Return line, 12 Pipe line, 13 Pressure Container 14 Space, 15 Injection hole, 16 Carbon dioxide cylinder, 17 Manual valve 18 Pressure reducing valve, 19 Pressure reducing valve, 20 Electric on-off valve, 21 Check valve 22 Pressure gauge, 23 Branching part, 24 Pipe line, 25 Float 26 Magnet, 27 Limit switch, 28 Limit switch 29 Limit switch, 30 Limit switch, 31 Pipe line 32 Junction section, 33 Pipe line, 34 Electric open / close valve, 35 Pipe line 36 Pipe line, 37 Manual or electric open / close valve, 38 Pipe line 39 Pipe line , 40 space, 41 partition wall, 42 branch part, 43 pipe line 44 electric opening and closing valve, 45 pipe line, 46 addition part, 47 pipe Line 48 Pipe line, 49 Flow path switching valve, 50 Pump, 51 Tank 52 Return line, 53 Pipe line, 54 Pipe line, 55 Pipe line, 56 Pipe line 57 Pipe line, Pipe line, 58 Pipe line, 59 Pipe line , 60 tank 61 pump, 62 addition part, 63 non-diaphragm electrolytic cell, 64 pipe 65 addition part, 66 pipe, 67 pipe, 68 pipe, 69 pipe 70 pipe, 71 electrolytic tank having a diaphragm, 72 Check valve 102 Electric flow rate adjustment valve 103 Electric flow rate adjustment valve 201 Branch valve 202 Pipe line 203 Pipe 204 Anti-scattering member 205 Pipe 206 Branch valve 207 Water inlet 208 Dissolved carbon dioxide concentration meter 209 Junction part, 210 Pipe line 211 Pipe line, 212 Restriction

Claims (4)

  A mechanism having a pressure vessel and supplying carbon dioxide gas into the pressure vessel and supplying tap water, well water and seawater into the pressure vessel at a pressure higher than the pressure in the pressure vessel, In a method of adding a sodium hypochlorite aqueous solution or a sodium chlorite aqueous solution to produce sterilized water having a predetermined chlorine concentration and pH from tap water, well water or seawater, the pressure vessel is subjected to a predetermined pressure higher than atmospheric pressure. A step of supplying carbon dioxide gas, and a branching step of supplying the tap water, well water or seawater to the pressure vessel by branching into at least two pipes, and draining from the bottom of the pressure vessel A drainage step, and a step of adding a sodium hypochlorite aqueous solution or a sodium chlorite aqueous solution to tap water, well water or seawater upstream of the branching step to generate sterilized water, The pressure through one of the branched lines It has a carbon dioxide absorption process that is injected and / or sprinkled into the carbon dioxide space in the vessel, and tap water, well water or seawater is sent to the lower part of the pressure vessel through other branched pipes, Alternatively, it has a dilution step in which water is supplied to the drainage step, and has a water level maintaining step in which the sterilized water in the pressure vessel is stored at a water level within a predetermined range at the bottom of the pressure vessel. A method for producing sterilized water, characterized in that sterilized water to be drained is adjusted to a predetermined pH.   A mechanism having a pressure vessel and supplying carbon dioxide gas into the pressure vessel and supplying tap water, well water and seawater into the pressure vessel at a pressure higher than the pressure in the pressure vessel, and hypochlorous acid in the supply water In a method for generating sterilized water having a predetermined chlorine concentration and pH from tap water, well water, or seawater by adding a sodium acid aqueous solution or a sodium chlorite aqueous solution, a drainage step of having a pressure vessel and draining from the pressure vessel Having a step of adding an aqueous sodium hypochlorite solution or an aqueous sodium chlorite solution to tap water, well water or seawater upstream of the pressure vessel to produce sterilizing water, Tap water or well water in a pipe separate from the pipe to which an aqueous solution of hydrochloric acid, sulfuric acid, or acetic acid is added to produce mixed sterilized water, or an aqueous solution of sodium hypochlorite or sodium chlorite is added And hydrochloric acid in seawater A step of generating acidic diluted water by adding an acidic aqueous solution of sulfuric acid or acetic acid and mixing the sterilized water and acidic diluted water to generate mixed sterilized water; A branching and supplying step to the above pipe line, and a carbon dioxide absorption step for spraying and / or sprinkling water into the carbon dioxide space in the pressure vessel through one branched pipe. A dilution step of feeding the mixed sterilized water to the lower part of the pressure vessel or the drainage line from the pressure vessel through the other pipe line, and the mixed sterilized water in the pressure vessel is at the bottom of the pressure vessel And a water level maintaining step for storing the water in a predetermined range, and the mixed sterilized water drained from the drain line of the pressure vessel is adjusted to a predetermined pH.   A mechanism having a pressure vessel and supplying carbon dioxide gas into the pressure vessel and supplying tap water, well water and seawater into the pressure vessel at a pressure higher than the pressure in the pressure vessel, and hypochlorous acid in the supply water In a method for producing sterilized water having a predetermined chlorine concentration and pH from tap water, well water, or seawater by adding a sodium acid aqueous solution or a sodium chlorite aqueous solution, the tap water, well water, or seawater includes at least three pipes. Having a branching process branching to a road, and adding a sodium hypochlorite aqueous solution or a sodium chlorite aqueous solution to tap water, well water or seawater through one of the pipes branched by the branching process, A step of generating acidic diluted water by adding an acidic aqueous solution of hydrochloric acid, sulfuric acid or acetic acid in another branch pipe, and the pressure vessel is subjected to a predetermined pressure higher than atmospheric pressure. Having a step of supplying carbon dioxide gas A mixed sterilized water having a carbon dioxide absorption step of spraying and / or sprinkling the sterilized water and the acidic aqueous solution into the carbon dioxide space of the pressure vessel through separate pipes, and mixed in the pressure vessel A drainage process for draining the pressure vessel from the drainage pipe of the pressure vessel, and a third branch pipe to which no water is added to the lower part of the pressure vessel or the drainage pipe from the pressure vessel. A dilution step of diluting by sending seawater, and having a water level maintaining step in which the mixed sterilized water is stored at a predetermined level in the bottom of the pressure vessel, and is drained from a drain line of the pressure vessel A method for producing sterilized water, comprising adjusting mixed sterilized water to a predetermined pH.   A mechanism having a pressure vessel and supplying carbon dioxide gas into the pressure vessel and supplying tap water, well water, or seawater into the pressure vessel at a pressure higher than the pressure in the pressure vessel, In a method for producing sterilized water having a predetermined chlorine concentration and pH by dissolving carbon dioxide in seawater to obtain carbonated water having a predetermined pH concentration and then adding sodium hypochlorite or sodium chlorite, And a branching step of branching and supplying well water or seawater to at least two pipes, and supplying a carbon dioxide gas to the pressure vessel at a predetermined pressure equal to or higher than atmospheric pressure. And a carbon dioxide absorption process that sprays and / or sprinkles water into the carbon dioxide space in the pressure vessel through one of the branched pipes. Carbon dioxide dissolves in tap water, well water, and seawater. A drainage step of draining the carbonated water from the pressure vessel and branching A diluting step of diluting the carbonic acid concentration by feeding water from the other pipe to the lower part of the pressure vessel or the drainage pipe, and sprayed and / or sprinkled and sent tap water, well water or seawater is the bottom of the pressure vessel A water level maintaining step for storing the water level within a predetermined range, and the carbonated water drained from the pressure vessel or drained downstream from the position where the other branched pipe is connected is sub- A method for producing sterilized water, comprising adjusting sterilized water generated by adding a sodium chlorate aqueous solution or a sodium chlorite aqueous solution to a predetermined pH.

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