JP4771396B2 - Method and apparatus for sterilizing and purifying bath water - Google Patents

Description

  The present invention relates to a bath water sterilizing and purifying method and a sterilizing and purifying apparatus in which anode water obtained by electrolyzing salt water is mixed into bath water of a bathtub to sterilize various bacteria in the bath water.

  Filtration device for removing interstitial substances such as human hair in bath water, circulation pump for forcibly circulating bath water, activation device containing activated stones such as ceramics, shell fossil, barley stone , Equipped with an ozone gas generator for generating ozone gas that has functions such as sterilization and deodorization, a heater for heating bath water to a predetermined temperature, a control device for controlling the mixing time of the ozone gas, the energization time of the heater, etc. The present applicant has proposed a large number of bath water purifiers according to Patent Documents 1-3. Since these bath water purifiers are equipped with an activating device, when the bath water passes through the activating device, it rots organic matter, for example, bath water, by bacteria that propagate on activated stones and give other life. The causative Ammonya is decomposed and the bath water is purified. In addition, various gases in the bath water are sterilized by ozone gas, and actions such as decomposition and deodorization of large molecular weight organic substances that cannot decompose bacteria are obtained.

Japanese Utility Model Publication No. 6-48893 JP-A-7-185574 Japanese Utility Model Publication No. 6-23203 JP2003-71465

  As described above, the bath water purifying apparatus proposed by the present applicant is sterilized with ozone gas to sterilize various germs in the bath water, and organic matter is biologically decomposed by bacteria. However, the present applicant has proposed a further improved method for purifying bath water according to Patent Document 4. According to this bath water purification method, the anode water is obtained by electrolyzing a part of the bath water containing salt water, and the bath water from the bathtub passes through a heater and a filtering device in home use. Moreover, in business use, it is mixed when circulating through the heat exchanger and the filtering device to the bathtub. Such an anodized water can be used for household baths in units of 1 to 4 hours a day, and for business baths 2 to 8 hours a day or ORP of bath water. It mixes so that a value may be kept in the range of 1000mV.

According to the bath water sterilization and purification method proposed by the present applicant according to Patent Document 4, since the anode water is mixed into the bath water, the bath water becomes acidic, and the germs in the bath water are effectively sterilized. Is done. In addition, since the bath water becomes acidic, a medicinal effect is recognized, and the intended purpose of the invention is achieved. In addition, there is a possibility of bathing for young and old men and women, and even sick people, such as large-scale home baths with a small volume, small number of people, and not many bacteria breeding, and large-scale recreation facilities and leisure centers. It is divided into some baths for business use, and for bath water for home use, the mixing time of anode water is controlled, and for business use, the mixing time of anode water and ORP are controlled. It is effectively carried out without being consumed by delirium, and is sufficiently sterilized as necessary for bathing, and also has a medicinal effect.
However, as a result of subsequent implementation, it was found that there was room for improvement. That is, it has been found that scale, bacteria dead, etc. adhere to the electrode of the electrolytic cell for obtaining anodized water relatively early. If it adheres, the electrolytic efficiency is reduced, so it is necessary to clean it. However, even if it can be cleaned regularly for business use with a maintenance inspection specialist, it is generally difficult for home use.
The present invention has been made in view of the conventional problems as described above, and is a method for sterilizing and purifying bath water that does not require maintenance and inspection of the electrolyzer over a long period of time regardless of whether it is for home use or business use. Another object of the present invention is to provide a purification apparatus for bath water that can suppress an increase in the value of COD or BOD in addition to the above object.

The above-mentioned object of the present invention is to electrolyze an electrolytic tank provided with electrodes by supplying tap water and salt water in which salt is dissolved in tap water, and anodic water obtained by electrolysis, It is configured to mix in the bath water, for example, every set time or every set date and time, and further so that the pH value or oxidation-reduction potential value is kept within a predetermined range via a predetermined check valve. Is achieved. That is, in order to achieve the above-mentioned object, the invention according to claim 1 allows the hot water coming out of the bathtub to pass through a predetermined pipe line in which at least a filtration device, a circulation pump, and a heater are connected in this order. Then, when it is circulated to the bathtub and used for a long time, the anode water obtained by electrolysis in the electrolytic tank equipped with the first and second electrode plates to which positive and negative voltages are applied is appropriately mixed in the bath water. A method for sterilizing germs in bath water, wherein the electrolytic tank is supplied with salt water in which salt water is dissolved by a salt water pump and supplied with tap water, and the first and second electrode plates are , changing the polarity of the voltage applied to each of the electrolysis, when electrolyzing in this manner, to give the anode water from the side a positive voltage of said first and second electrode plate is applied, the A line of anode water from the filtration device to the circulation pump , Mixed through a check valve configured to uniformly mixed with bathwater to reach the bath. The invention described in claim 2 is configured such that in the sterilization purification method according to claim 1, the anodized water is mixed so that the pH value or the oxidation-reduction potential value of the bath water is maintained within a predetermined range. The
The invention described in claim 3 includes at least a predetermined pipe line in which a filtration device for filtering bath water, a circulation pump, and a heater for heating bath water are connected in this order, and an electrolysis device, bath water in the bathtub when the circulation pump is Ru is activated is circulated into through bath and heater and the filtration device, the anode water in bathwater obtained by the first and second electrode plates of the electrolytic device therebetween An apparatus for sterilizing various germs in bath water that is appropriately mixed into the electrolytic bath, wherein the electrolysis apparatus is prepared by dissolving salt in tap water in an electrolytic tank provided with first and second electrode plates. The salt water is supplied by the salt water pump and the tap water is supplied. The first and second electrode plates are applied with a voltage that changes in polarity every time electrolysis is performed. Anodized water can be obtained from the one where the voltage is applied. Anode water, the the conduit is continuous to the circulating pump from the filtration device, it is mixed through a check valve configured thereby to be uniformly mixed with the bathwater to reach the bath.

As described above, according to the present invention, when the hot water discharged from the bathtub is circulated to the bathtub through at least the filtration device and the heater and used over a long period of time, the first and second electrode plates are provided. Since the anode water obtained by electrolysis in the electrolytic tank is mixed in the bath water, the bath water is heated and held at a predetermined temperature by a heater and filtered by a filtration device. And the miscellaneous bacteria in the bath water are effectively sterilized by the anode water. Further, since the bath water becomes acidic, a medicinal effect, a cosmetic effect, that is, an astrogen effect can be obtained. Furthermore, since the anode water is injected, the colloidal substance in the bath water aggregates, and this is filtered by the filtering device, so that the bath water is always kept in a transparent state.
In addition to such an effect, according to the present invention, the electrolytic tank provided with the first and second electrode plates is supplied with tap water and salt water in which salt is dissolved in tap water. Impurities are prevented from adhering to the surface. Therefore, according to the present invention, an effect peculiar to the present invention that the maintenance of the electrolyzer becomes free can be obtained. Further, since the positive and negative voltages applied to the first and second electrode plates are changed every time the electrolysis is performed, the silica component adhering to the first and second electrode plates, the electrolytic tank and the like is eliminated. Or the amount of adhesion decreases. Therefore, the anode water can be obtained stably over a long period of time.

  Embodiments of the present invention will be described below. FIG. 1 is a schematic view of a bath water sterilization and purification apparatus according to an embodiment of the present invention. As shown in FIG. 1, the bath water sterilization and purification apparatus according to the present embodiment is a filter. It comprises a bath water circulation system J comprising a vessel 1, a circulation pump 10, a heater 11 and the like, and a bath water sterilization system S comprising an automatic saline solution supply device 12, an electrolysis device 20 and the like. Although not shown in FIG. 1, the circulation system J is provided with an activation device or the like in which activated gas such as an ozone gas generator, ceramics, shell fossils, and barley stones are accommodated as necessary. Moreover, a silver ion generator is also provided in the bath water sterilization system S or the like as appropriate. The components of the circulation system J and the sterilization system S are connected to each other by acid-resistant or corrosion-resistant pipes or pipes, as will be described later, and are appropriately controlled by a control device.

  The filter 1 includes a corrosion-resistant filter tank 2. The inside of the filter tank 2 is divided into two upper and lower chambers by a partition plate 3, the upper portion is a bath water filtration chamber 4, and the lower portion is a hot water collection chamber 5. Although only one is shown in FIG. 1A, a plurality of through holes are formed in the partition plate 3, and a plurality of cylindrical shapes are formed in the filtration chamber 4 corresponding to these through holes. Filters 6, 6... Are provided. In the filters 6, 6,..., A pipe 7 having a plurality of holes is provided. The upper end of the pipe 7 opens into the filter 6, and the lower end opens into the hot water collection chamber 5. Therefore, the bath water supplied to the filtration chamber 4 is filtered when passing through the cylindrical portions of the filters 6, 6,... To gather. The end of the discharge pipe a is connected to the filtration chamber 4 of the filter tank 2 configured as described above, and the start end of the filtration discharge pipe c connected to the circulation pump 10 is connected to the hot water collection chamber 5. .

  As shown in the schematic diagram of FIG. 1, the heater 11 includes a casing, and a conventionally known electric heater such as a chiller heater is provided therein. A discharge pipe d of the circulation pump 10 is connected to the inlet of the casing, and a suction pipe b is connected to the outlet. However, the heater 11 can also be configured as shown in Japanese Patent Application Laid-Open No. 2003-71465 proposed by the present applicant. That is, an electric heater is provided at substantially the center of an aluminum block, and first and second heat exchange pipes made of two acid-resistant stainless steel pipes are inserted on both sides of the electric heater so as to penetrate in the axial direction. It can also be implemented. As a result, the bath water is heated twice while leaving the bathtub Y and returning to the bathtub Y.

  The electrolysis apparatus 20 according to the present embodiment is configured by an electrolysis tank 21 made of, for example, an insulating plastic, as shown in an enlarged view in FIG. The first electrode chamber 23 and the second electrode chamber 24 are divided into two by a liquid-permeable partition wall 22 such as a perforated plate. A first electrode plate 25 is disposed in the first electrode chamber 23, and a second electrode plate 26 is disposed in the second electrode chamber 24. Although the wiring relationship is not shown in the figure, a DC voltage of, for example, 10 to 12 volts is alternately applied to the first and second electrode plates 25 and 26 every set time. . That is, when a positive voltage is applied to the first electrode plate 25, a negative voltage is applied to the second electrode 26, and when a negative voltage is applied to the first electrode plate 25, The second electrode 26 is switched every time the electrolysis is performed so that a positive voltage is applied.

  Above the first electrode chamber 23 of the electrolytic tank 21 configured as described above, the starting end of the anode water supply pipe f is connected. The anode water supply pipe f has an adjustment valve 27, a check valve 28, and a check valve 28. A first electromagnetic three-way valve 31 shown in (b) of FIG. 1 is interposed, and its end is connected to a filtration discharge pipe c at a position away from the bathtub Y. Thereby, the anode water mixed in the bath water is uniformly mixed with the bath water before reaching the bathtub Y. Further, above the second electrode chamber 24 of the electrolytic tank 21, a cathode water discharge pipe in which a second electromagnetic three-way valve 32 and an electromagnetic opening / closing valve 29 shown in FIG. g is connected. Further, the third outlet port of the first electromagnetic three-way valve 31 is connected to the cathode water discharge pipe g by the connecting pipe g ′, and the outlet port of the second electromagnetic three-way valve 32 is similarly connected to the connecting pipe f. 'Is connected to the anode water supply pipe f. The first and second electromagnetic three-way valves 31 and 32 are switched every time the voltage applied to the first and second electrode plates 25 and 26 changes. That is, the anode water electrolyzed by the first and second electrodes is always supplied to the bath water from the anode water supply pipe f, and the cathode water is discharged to the outside from the cathode water discharge pipe g.

  A tap water supply pipe h connected to the water supply pipe is connected to the lower part of the electrolytic tank 21 configured as described above. A check valve 30 and an electromagnetic on-off valve 31 are interposed in the tap water supply pipe h. Therefore, when the electromagnetic on-off valve 31 is opened, tap water that is not contaminated with impurities such as scale and dust is supplied to the electrolytic tank 21 through the check valve 30.

  The automatic saline solution supply device 12 can also be configured as shown in the above-mentioned Japanese Patent Application Laid-Open No. 2003-71465, but a simplified device is shown in FIG. That is, it is comprised from the salt water tank 13 which consists of a corrosion-resistant material. An opening / closing lid 14 is detachably attached to the salt water tank 13. Therefore, the open / close lid 14 can be opened to appropriately replenish sodium chloride for electrolysis. A float switch 15 is provided inside the salt water tank 13, and the upper and lower limit positions of the salt water are detected by the float switch 15. A tap water supply pipe i is connected to the upper side of the salt water tank 13 thus configured, and a salt water supply pipe j is connected to the lower position. An electromagnetic open / close valve 16 is interposed in the tap water supply pipe i and is connected to the tap water supply pipe h. A salt water pump 17 is interposed in the salt water supply pipe j, and is connected to the tap water supply pipe h. Therefore, tap water and salt water are supplied to the electrolytic tank 21 while being mixed.

  Also in this embodiment, a silver ion generator as shown in Japanese Patent Application Laid-Open No. 2003-71465 proposed by the present applicant can be provided, but it is shown in FIG. 1 like the ozone generator. Not.

  Although the controller or control device is not shown in the figure, it is composed of a microcomputer, and has a calculation function, a comparison function, a storage function, etc. as well known in the past, and various types of time, temperature, pH (PH) value, etc. The setting means which can set the value of is also provided. The control device and a not-shown pH (PH) sensor, oxidation-reduction potentiometer, that is, an ORP sensor, a temperature sensor, and the like are connected by a signal line. In addition, the circulation pump 10 is started and stopped or the electric heater of the heater 11, the time for alternately applying the DC voltage to the first and second electrode plates 25 and 26 of the electrolysis device 20, the positive plate of the silver ion generator, the ozone gas The energization and stop of the generator, etc., and the opening / closing of the electromagnetic on / off valves 16, 31,... Are also controlled by the control device. The float switch 15 is also connected to the control device via a signal line (not shown).

  Next, the operation of the above embodiment will be described. First, a method for sterilizing and purifying domestic bath water in which the volume of the bathtub Y is relatively small will be described. The temperature of the bath water, for example, 43 ° C. is set in the control device. Further, the acidity of the bath water, that is, the pH (PH) value (2.0 to 5.0) is set to 4, for example. Alternatively, an ORP value is set. The ORP value is an oxidation-reduction potential. When this value is 800 mV or higher, there is a considerable bactericidal power, and when it is 1000 mV or higher, it is said that pathogenic bacteria and viruses cannot survive. For example, 900 mV is set. Furthermore, a sterilization date is set. In the present embodiment, since sterilization is performed for 1 to 3 days in a week in units of one week, for example, Sunday and Thursday are set. Also, the ozone gas injection time is set. For example, it is set so that Sunday and Thursday are mixed for 10 minutes once a day, and the days other than these days are mixed for 10 minutes every hour. Or it sets so that silver ion may be mixed similarly. At this time, mixing of ozone gas can be stopped.

  Further, the open / close lid 14 of the automatic salt water supply device 12 is opened, an appropriate amount of salt is supplied to the salt water tank 13, and the electromagnetic open / close valve 16 is opened to supply tap water until the float switch 15 detects the upper limit. In this way, for example, salt water having a concentration of about 5% is stored in the salt water tank 13.

  The temperature of the bath water detected by the temperature sensor is input to the control device and compared with a set value of 43 ° C. in the control device. When it becomes lower than the set value, the circulation pump 10 is started. Then, the hot water in the bathtub Y is sucked from the discharge pipe a and sucked into the filtration chamber 4 of the filter 1 as indicated by the solid arrow. The bath water is equally distributed and supplied from the filtration chamber 4 to the plurality of filters 6, 6,..., Filtered, and reaches the hot water collection chamber 5. It is sucked into the circulation pump 10 from the hot water collection chamber 5 by the filtration discharge pipe c. And it is pumped from the suction pipe b through the heater 11 to the bathtub Y through the container of a silver ion generator although it is not shown by FIG. Now, since the temperature of the bath water is lower than the set value, the electric heater of the heater 11 is energized. Therefore, the bath water is heated while circulating as described above. Stops when the set temperature reaches 43 ° C. In this way, the bath water is always kept at the set temperature of 43 ° C.

  As described above, the bath is bathed while the bath water is circulated and maintained at a predetermined temperature. When the day advances and it is Sunday set in the control device, the pH (PH) value or ORP value detected by the pH (PH) sensor or ORP sensor is compared with the set value set in the control device. If these detected values are smaller than the set value, the circulating pump 10 is activated and the hot water circulates as described above. The salt water pump 17 is activated. The salt water stored in the salt water tank 13 is supplied to the tap water supply pipe h. Further, the electromagnetic opening / closing valve 29 is opened, and tap water is supplied to the electrolytic tank 21 through the check valve 30 to an appropriate amount. That is, tap water and salt water are supplied to the electrolytic tank 21. For example, a positive voltage is applied to the first electrode 25 of the electrolytic tank 21, and a negative voltage is applied to the second electrode 26, and electrolysis starts. Further, the first and second electromagnetic three-way valves 31 and 32 are switched so that the electrolyzed water does not flow into the communication pipes g ′ and f ′.

  In the first electrode chamber 23 of the electrolytic tank 21, hypochlorous acid, nitrous acid, hydrochloric acid and the like are generated together with hydrochloric acid as is conventionally known. The strongly acidic anodic water in which these are dissolved is squeezed to an appropriate amount corresponding to the electrolysis capacity by the adjusting valve 27 and mixed into the filtration discharge pipe c from the anodic water supply pipe f. The acidity of the bath water gradually increases, and the germs in the bath water are sterilized. Moreover, a medicinal effect comes to be acquired by bathing. Furthermore, the colloidal organic matter aggregates and settles. When the set pH (PH) value 4 or ORP value becomes 900 mV, or when the set time elapses, the circulation pump 10 stops and the electrolysis also stops. Cathode water generated in the second electrode chamber 24 is discharged to the outside through a cathode water discharge pipe g.

  When it falls below the set value or when the set time is reached, it starts again. At this time, a negative voltage is applied to the first electrode 25 and a positive voltage is applied to the second electrode 26. Further, the first and second electromagnetic three-way valves 31 and 32 are switched so that the electrolyzed water flows through the communication pipes g ′ and f ′. That is, the anode water electrolyzed in the second electrode chamber 24 is discharged from the anode water supply pipe f to the bathtub Y, and the cathode water electrolyzed in the first electrode chamber 23 is discharged to the outside from the cathode discharge pipe g. In this way, the bath water is kept at a set pH (PH) value of 4 or an ORP value of 900 mV throughout the day on Sunday. Thereby, the bath water is almost completely sterilized. Even when the anode water is mixed in this way, when the temperature of the bath water falls below the set value, the heater 11 is energized and the bath water is heated.

  When the ozone gas mixing time is reached, the circulation pump 10 is activated, and the ozone gas generator is energized to activate the air pump. Thereby, ozone gas is mixed in the bath water in the suction pipe b, for example. Bacteria such as microorganisms, Escherichia coli, Legionella, etc. in the bath water that have survived without being sterilized by the anode water are sterilized, and malodors are deodorized. In addition, reducing organic substances and biodegradable organic substances that cannot be decomposed by bacteria are decomposed. Ozone gas becomes dissolved oxygen and helps the growth of aerobic bacteria. If silver ions are mixed instead of ozone gas, the bacteria, such as Escherichia coli and Legionella bacteria, that survive without being sterilized by the anodized water are sterilized, and both reducing and biodegradable organic substances are sterilized. Disassembled.

  For example, even if it is Monday and the pH (PH) value or ORP value falls below the set value, the mixing of the anode water is not performed, and as described above, only the temperature of the bath water is controlled to the set temperature. . Thereby, sterilization more than necessary is not performed. In addition, the medicinal effect is also rested. Even in such a case, when the set time is reached, ozone gas or silver ions are mixed for the set time.

  When the set Thursday is reached, the pH (OR) value or ORP value detected as described above is compared with the set value and controlled to be maintained at the set value. Even in such a case, when the set time is reached, ozone gas or silver ions are mixed for the set time. Repeat one week thereafter. The cathodic water containing sodium hydroxide in the electrolyzer 20 is discharged to the outside from the cathodic water discharge pipe g. At this time, a throttle valve or the like may be interposed in the cathode water discharge pipe g so as to reduce the amount of bath water to be discharged.

  When electrolyzed and sterilized as described above, the amount of salt water in the salt water tank 13 is reduced. When the predetermined amount is decreased, an alarm is issued by the float switch 15. The opening / closing lid 14 of the salt water tank 13 is opened, and salt is appropriately replenished. Moreover, tap water is also replenished and salt water of a predetermined concentration is accumulated in the salt water tank 21.

  It is clear that the present invention is not limited to the above embodiment. For example, it is possible to sterilize only one day a week by increasing the pH (PH) value or ORP value, or set it relatively low and sterilize only three days a week. It can also be implemented. Moreover, it can also carry out so that it may sterilize for every set time or set day irrespective of a pH value or an ORP value. . In addition, the electrode plates 25 and 26 can be formed of comb-type electrodes as described in Japanese Patent Application Laid-Open No. 11-290854 proposed by the present applicant. In this case, it is desirable to apply a pulsed voltage. Ozone gas and silver ions can be mixed in various ways. For example, according to the present embodiment, since a silver ion generator and an ozone gas generator are provided, these devices can be used simultaneously or separately depending on the value of COD or BOD. Moreover, it is possible to provide only an ozone gas generator that is relatively inexpensive and easy to manage.

  Next, a method for sterilizing and purifying commercial bath water in which the volume of the bathtub Y is relatively large will be described. At this time, as described above, since many people take a bath, it is necessary to maintain a sufficiently sterilized state, and since the problem per medicine is small, the sterilization is always performed. That is, a pH (PH) value or an ORP value is set. The bath temperature is also set. Furthermore, the time when the ozone gas or silver ions are mixed, the day of the week, etc. are set. When the temperature of the bath water becomes lower than the set value, the circulation pump 10 is started as described above. Further, the electric heater of the heater 11 is energized. Then, the bath water in the bathtub Y is heated as described above. Stops at the set temperature. Thereby, bath water is always kept at preset temperature.

  When the pH (PH) value or ORP value detected by the pH (PH) sensor or ORP sensor falls below the set value, the circulation pump 10 is activated and the hot water circulates. Moreover, the solenoid valves 29 and 31 are opened, and the salt water pump 17 is activated. As described above, salt water and tap water are supplied to the salt water tank 21. In addition, the electrodes 25 and 26 of the electrolytic tank 21 are energized to start electrolysis. As described above, the anode water is mixed from the anode water supply pipe f into the filtration discharge pipe c. The acidity of the bath water becomes high, and the concentration is such that germs in the bath water are sterilized. Moreover, it becomes the density | concentration from which a medicinal effect is acquired by bathing. When the set pH (PH) value or ORP value is reached, the circulation pump 10 stops and electrolysis also stops. When it falls below the set value, it starts again. In this way, the bath water is kept at a constantly set pH (PH) value or ORP value. Thereby, the bath water is almost completely sterilized. Even when the anode water is mixed in this way, ozone gas or silver ions are mixed for the set time at the set time. Thereby, as mentioned above, a reducing organic substance or a biodegradable organic substance is decomposed | disassembled with disinfection. When the temperature of the bath water falls below the set value, the electric heater is energized and the bath water is heated.

  As described above, according to the present embodiment, the electrolysis tank 21 is supplied with tap water that does not contain impurities such as scales and dead microorganisms, and salt water in which salt is dissolved in tap water that does not contain impurities. Therefore, impurities do not adhere to the electrode plates 25 and 26 and the permeable partition wall 22. Therefore, anodic water can be obtained stably over a long period of time.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram showing an embodiment of the present invention with a partial cross section, in which FIG.

DESCRIPTION OF SYMBOLS 1 Filter 10 Circulation pump 11 Heater 12 Automatic salt solution supply device 13 Salt water tank 17 Salt water pump 20 Electrolysis device 21 Electrolyzer 25 First electrode plate 26 Second electrode plate h Tap water supply pipe i Tap water supply pipe

Claims (3)

The bath water exiting from the bath, when at least a filtration device and the circulation pump and the heater used for a long time to circulate into the bath and through a predetermined conduit connected in this order, positive and negative voltages are applied An anodized water obtained by electrolysis in an electrolytic tank equipped with the first and second electrode plates is appropriately mixed in the bath water to sterilize germs in the bath water,
The electrolytic tank is supplied with salt water in which salt is dissolved in tap water by a salt water pump and supplied with tap water, and the first and second electrode plates change the polarity of the voltage applied each time electrolysis is performed. When electrolyzing in this way, anodized water is obtained from the first and second electrode plates to which a positive voltage is applied, and the anodized water is connected from the filtration device to the circulation pump. A method for sterilizing and purifying bath water, characterized in that it is mixed in a pipe line through a check valve and mixed uniformly with bath water before reaching the bathtub .   The sterilizing and purifying method for bath water according to claim 1, wherein the anodized water is mixed so that the pH value or oxidation-reduction potential value of the bath water is maintained within a predetermined range. At least, in a bath when provided with a predetermined conduit a heater for heating the filtration device and the circulation pump and bathwater for filtering bathwater is connected in this order, and an electrolytic device, the circulation pump is Ru is activated The bath water is circulated to the bathtub through the filtration device and the heater, and the anode water obtained by the first and second electrode plates of the electrolysis device is appropriately mixed into the bath water during that time. An apparatus for sterilizing germs in the bath water,
The electrolyzer is configured such that salt water in which salt is dissolved in tap water is supplied by a salt water pump to the electrolysis tank provided with the first and second electrode plates , and tap water is supplied. Each time the electrolysis is performed, the first and second plates are applied with a voltage that changes in positive and negative, and anodized water is obtained from the direction where a positive voltage is always applied. The anode water is mixed into the pipe line connected to the circulation pump from the filtration device through a check valve , and thereby, it is mixed uniformly with the bath water until reaching the bathtub. A bath water sterilization and purification device.

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