Source: https://patents.justia.com/patent/6464845
Timestamp: 2020-02-17 13:29:58
Document Index: 662808856

Matched Legal Cases: ['art 60', 'art 61', 'art 62', 'art 60', 'art 61', 'art 62', 'art 70', 'art 70', 'art 80', 'art 81', 'art 82', 'art 81', 'art 80', 'art 82', 'art 91', 'art 80', 'art 82', 'art 81', 'art 62', 'art 60', 'art 61', 'art 70']

US Patent for Manufacturing method and apparatus for making alkaline ionized water and acidic water Patent (Patent # 6,464,845 issued October 15, 2002) - Justia Patents Search
Justia Patents With Feeding And/or Withdrawal MeansUS Patent for Manufacturing method and apparatus for making alkaline ionized water and acidic water Patent (Patent # 6,464,845)
May 9, 2001 - Chemicoat & Co., Ltd.
Latest Chemicoat & Co., Ltd. Patents:
FIG. 1-A shows the summary of the first embodiment of the manufacturing method and apparatus of electrolytic ionized water according to the invention. Numeral 2 denotes an electrolytic bath, which has an intermediate cell 2b to be an electrolysis solution cell at the center, a diaphragm (anion exchange membrane) 2d forming an anode cell 2a at one side of the intermediate cell 2b, and a diaphragm (cation exchange membrane) 2d′ forming a cathode cell 2c at the other side. In the anode cell 2a and the cathode cell 2c, an anode electrode 2e and a cathode electrode 2f are provided, respectively, which face each other. The anode electrode 2e and the cathode electrode 2f are connected to a direct-current power source.
A supplying system 7a of raw material water for producing acidic water is connected to the anode cell 2a, and water selected from water for industrial use, tap water and well water is supplied from it to the anode cell 2a. An acidic water withdrawing system 10 is connected to the other position of the anode cell 2a. An electrolysis solution supplying line 60 is connected to the intermediate cell 2b, to continuously supply the electrolysis solution. An electrolysis solution withdrawing line 61 is connected to the other position of the intermediate cell 2b. The electrolysis solution supplying line 60 and the electrolysis solution withdrawing line 61 are connected to a line having an electrolysis solution bath 3 and a pump P1, and an electrolysis solution circulating system 6a is constituted from them.
A container bath 4 of alkaline ionized water is provided outside the electrolytic bath 2, a circulation system 8a is constituted with the cathode cell 2c of the electrolytic bath 2 by a line containing a circulating pump P2. That is, the container bath 4 is connected at the upper part to a withdrawing line 81 of the cathode cell 2c, and connected at the bottom part to an inlet of the circulating pump P2 via a line 80. An outlet of the circulating pump P2 is connected to the supplying side of the cathode cell 2c via a line 82. The container bath 4 has at the bottom a withdrawing system 9a of alkaline ionized water having a desired pH value, and the withdrawing system 9a has a water collecting means 900. The water collecting means 900 may be arbitrarily selected from, for example, a valve and a pump.
A supplying system 7a′ of raw material water for alkaline ionized water is connected to the container bath 4. The raw material water may be tap water. However, taking the quality of alkaline ionized water obtained and maintenance of the apparatus into consideration, water, from which a cation and an anion are removed, i.e., pure water, is preferably used. Also, if pure water is used, the hydroxide ion concentration increases and hence, use of pure water is advantageous, whereby water having a slightly higher pH value can be obtained.
Upon producing alkaline ionized water according to the first embodiment, raw material water for producing acidic water is supplied from the raw material water supplying system 7a to the anode cell 2a; the electrolysis solution is continuously circulated and supplied to the intermediate cell 2b by the circulation system 6a; raw material water for alkaline ionized water, for example, pure water, stored in the container bath 4 is supplied to the cathode cell 2c by the circulating pump P2; and the electrolytic voltage is applied between the anode electrode 2e and the cathode electrode 2f.
By the application of the electrolytic voltage, the electrolysis solution is electrolyzed, an anion (chloride ion) is transferred to the anode cell 2a through the diaphragm 2d, and a cation (sodium ion) is transferred to the cathode cell 2c through the diaphragm 2d′. Accordingly, water in the anode cell becomes acidic, and water in the cathode cell becomes alkaline, to produce alkaline ionized water in the cathode cell 2c.
The alkaline ionized water is exhausted to the container bath 4 through the line 81, and again supplied to the cathode cell 2c by the circulating pump P2 through the line 82, so as to be again electrolyzed by the anode electrode 2e and the cathode electrode 2f.
The above procedures are repeated in the invention. Because alkaline ionized water produced in the cathode cell 2c is circulated and supplied to the cathode cell 2c as an electrolysis solution to be repeatedly electrolyzed by applying electrolytic voltage, the cation is accumulated in the alkaline ionized water in the cathode cell 2c to increase the pH value with the lapse of time. After applying electrolytic voltage for a prescribed period of time to obtain a desired pH value, alkaline ionized water is withdrawn by operating the water collecting means 9a.
On the other hand, water supplied to pass through the anode cell 2a becomes acidic water by electrolysis and is continuously withdrawn to the outside by the acidic water withdrawing system 10.
A supplying system 7a of raw material water for producing acidic water is connected to an anode cell 2a of the first electrolytic bath 2A, and raw material water for producing acidic water is supplied to the anode cell 2a. A supplying system 7b branched from the supplying system 7a is connected to an anode cell 2a of the second electrolytic bath 2B, and similarly a supplying system 7c branched from the supplying system 7a is connected to an anode cell 2a of the third electrolytic bath 2C.
A supplying line 60 is connected to an inlet of an intermediate cell 2b of the first electrolytic bath 2A, and an electrolysis solution is continuously supplied. An electrolysis solution exhausting line 61′ is connected to an outlet of the intermediate cell 2b, and the electrolysis solution exhausting line 61′ is connected to an inlet of an intermediate cell 2b of the second electrolytic bath 2B. The electrolysis solution exhausting line 61′ of the intermediate cell 2b is connected to an inlet of an intermediate cell 2b of the final electrolytic bath 2C, and an electrolysis solution exhausting line 61 of an outlet of the intermediate cell 2b is connected to the supplying line 60 via a line containing an electrolysis solution bath 3 and a pump P1, so as to form a circulation system 6a of the electrolysis solution.
Cathode cells 2c of the first electrolytic bath 2A, the second electrolytic bath 2B and the third electrolytic bath 2C are connected to each other in series by lines 810 and 811, to form a circulation system 8a via a line containing an outer container bath (container bath for circulation) 4 and a circulating pump P2. That is, the container bath 4 is connected at an upper part to a withdrawing line 81 of the cathode cell 2c of the third electrolytic bath 2C, and is connected at the bottom to an inlet of the circulating pump P2 via a line 80. An outlet of the circulating pump P2 is connected to an inlet of the cathode cell 2c of the first electrolytic bath 2A via a line 82. The container bath 4 has at the bottom a withdrawing system 9a of alkaline ionized water having a desired pH value, and the withdrawing system 9a has a water collecting means 900. The water collecting means 900 may be arbitrarily selected from, for example, a valve and a pump. As similar to the above embodiment, a supplying system 7a′ of raw material water of alkaline ionized water is connected to the container bath 4.
In this example, raw material water for producing acidic water is supplied to the anode cells 2a of the electrolytic baths 2A, 2B and 2C via the supplying systems 7a, 7b and 7c, respectively; the electrolysis solution is circulated and supplied to the intermediate cells 2b of the electrolytic baths 2A to 2C via the electrolysis solution circulation system 6a; raw material water of alkaline ionized water previously stored in the container bath 4 is supplied to the cathode cells 2c of the electrolytic baths 2A to 2C in this order by the circulating pump P2; and under the conditions, electrolytic voltage is applied between anode electrodes 2e and cathode electrodes 2f of the electrolytic baths.
In the first electrolytic bath 2A, alkaline ionized water is produced in the cathode cell 2c through the electrolysis as described above. The alkaline ionized water is supplied to the cathode cell 2c of the second electrolytic bath 2B via the line 810. It is similarly electrolyzed in the second electrolytic bath 2B, and a cation is accumulated in the alkaline ionized water. The alkaline ionized water is supplied to the cathode cell 2c of the third electrolytic bath 2C via the line 811, and is again electrolyzed in the third electrolytic bath 2C, so that a cation is further accumulated in the alkaline ionized water. The alkaline ionized water produced in the lowermost electrolytic bath 2C is exhausted from the cathode cell 2c to the container bath 4 via the line 81, and then again supplied to the cathode cell 2c of the first electrolytic bath 2A by the circulating pump P2 via the line 82, which is then again electrolyzed by the anode electrode 2e and the cathode electrode 2f. This operation is repeated in the second electrolytic bath 2B and the third electrolytic bath 2C.
In the embodiment of FIG. 1-B, because the alkaline ionized water produced in the cathode cells 2c of the plural electrolytic baths 2A, 2B and 2C one by another is circulated and supplied as an electrolysis solution, so that electrolytic voltage is repeatedly applied to conduct electrolysis, a cation is accumulated in the alkaline ionized water in a short period of time, and alkaline ionized water having a high pH value can be effectively produced. When the pH value becomes the desired value, the alkaline ionized water is withdrawn by operating the water collecting means 900.
FIG. 2-A shows the summary of the second embodiment of the manufacturing method and apparatus of electrolytic ionized water according to the invention. Numeral 2′ denotes an electrolytic bath, which has a diaphragm (ion exchange membrane) 2g at the center. An anode cell 2a is provided on one side of the diaphragm 2g as a boundary, and a cathode cell 2c is provided on the other side. An anode electrode 2e and a cathode electrode 2f are provided in the anode cell 2a and cathode cell 2c, respectively, and face each other. The anode electrode 2e and the cathode electrode 2f are connected to a direct-current power source.
An electrolysis solution supplying system 6b is connected to the anode cell 2a, and an electrolysis solution is supplied to the anode cell 2a. In this example, in the electrolysis solution supplying system 6b, a raw material water supplying line 63 is connected to an electrolysis solution supplying line 3a via a valve, the electrolysis solution supplying line 3a is connected to an electrolysis solution bath 3 via an electrolysis solution supplying pump 3b.
Therefore, raw material water added with an electrolysis solution of a desired concentration (for example, a sodium chloride solution of from 10 to 30%) is supplied as an electrolysis solution to the anode cell 2a. Tap water may be used as the electrolysis solution. In this case, tap water is supplied from the raw material water supplying line 63 with the valve closed. An acidic water withdrawing system 10 is connected to the other position of the anode cell 2a.
On the other hand, a container bath (container bath for circulation) 4 for alkaline ionized water is provided outside the electrolytic bath 2, and a circulation system 8a is constituted with the cathode cell 2c of the electrolytic bath 2′ by a line containing a circulating pump P2. That is, the container bath 4 is connected at the upper part to a withdrawing line 81 of the cathode cell 2c, and is connected at the bottom to an inlet of the circulating pump P2 via a line 80. The outlet of the circulating pump P2 is connected to an inlet of the cathode cell 2c via a line 82. The container bath 4 has at the bottom a withdrawing system 9a for alkaline ionized water having a desired pH value, and the withdrawing system 9a has a water collecting means 900. The water collecting means 900 may be arbitrarily selected from, for example, a valve and a pump.
A supplying system 7a′ of raw material water of alkaline ionized water is connected to the container bath 4. In the second embodiment, the raw material water is an electrolysis solution, and a sodium chloride solution of 0.1 to 0.2% is used, for example.
Upon producing alkaline ionized water according to the second embodiment, an electrolysis solution is supplied from the electrolysis solution supplying system 6b to the anode cell 2a; an electrolysis solution as raw material water previously stored in the container bath 4 is supplied to the cathode cell 2c by the circulating pump P2; and under the conditions, electrolytic voltage is applied between the anode electrode 2e and the cathode electrode 2f.
By the application of the electrolytic voltage, the electrolysis solution is electrolyzed, an anion (chloride ion) and a cation (sodium ion) are transferred to the anode cell 2a and the cathode cell 2c, respectively, through the diaphragm 2g. Accordingly, water in the anode cell becomes acidic, and water in the cathode cell becomes alkaline, to produce alkaline ionized water in the cathode cell 2c. The alkaline ionized water is exhausted to the container bath 4 via the line 81, and then supplied to the cathode cell 2c by the circulating pump P2 via the line 82, which is again electrolyzed by the anode electrode 2e and the cathode electrode 2f.
In the invention, the above operation is repeated. Because alkaline ionized water produced in the cathode cell 2c is circulated and supplied to the cathode cell 2c to be electrolyzed by repeatedly applying electrolytic voltage, the amount of an anion in the cathode cell is decreased, and a cation is transferred from the anode cell, so that a cation is accumulated in the alkaline ionized water, the pH value of which is increased with the lapse of time. After applying electrolytic voltage for a prescribed time to obtain a desired pH value, the alkaline ionized water is withdrawn by operating the water collecting means 9a. On the other hand, the electrolysis solution supplied to pass the anode cell 2a becomes acidic water by electrolysis, which is continuously withdrawn to the outside by the acidic water withdrawing system 10.
FIG. 2-B shows another example of the second embodiment. In this example, plural electrolytic baths 2A′ and 2B′ each having the above-described structure (two baths are used in the figure) are arranged in series. An electrolysis solution supplying system 6b is connected to an anode cell 2a of the first electrolytic bath 2A′ as described above, and the electrolysis solution is supplied to the anode cell 2a. An electrolysis solution supplying system 6b′ branched from the electrolysis solution supplying system 6b is connected to an anode cell 2a of the second electrolytic bath 2B′.
Cathode cells 2c of the first electrolytic bath 2A′ and the second electrolytic bath 2B′ are connected to each other in series via a line 810, and a circulation system 8a is constituted with a line containing an outer container bath 4 and a circulating pump P2. That is, the container bath 4 is connected at the upper part to a withdrawing line 81 of the cathode cell 2c of the second electrolytic bath 2B′, and is connected at the bottom to an inlet of the circulating pump P2 via a line 80. An outlet of the circulating pump P2 is connected to an inlet of the cathode cell 2c of the first electrolytic bath 2A′ via a line 82. The container bath 4 has at the bottom a withdrawing system 9a of alkaline ionized water having a desired pH value, and the withdrawing system 9a has a water collecting means 900, The water collecting means 900 may be arbitrarily selected from, for example, a valve and a pump. As similar to the above embodiment, a supplying system 7a′ of raw material water of alkaline ionized water is connected to the container bath 4.
In this example, an electrolysis solution is continuously supplied to the anode cells 2a of the first electrolytic bath 2A′ and the second electrolytic bath 2B′ from the electrolysis solution supplying systems 6b and 6b′; raw material water previously stored in the container bath 4 is supplied to the cathode cells 2c of the first electrolytic bath 2A′ and the second electrolytic bath 2B′ one by another by the circulating pump P2; and under the conditions, electrolytic voltage is applied between the anode electrodes 2e and the cathode electrodes 2f of the electrolytic baths. In the first electrolytic bath 2A, electrolysis is carried out as described above to produce alkaline ionized water in the cathode cell 2c. The alkaline ionized water is supplied to the cathode cell 2c of the second electrolytic bath 2B′ via the line 810. The alkaline ionized water is similarly electrolyzed in the second electrolytic bath 2B′, and a cation is accumulated in the alkaline ionized water. The alkaline ionized water is exhausted from the cathode cell 2c of the second electrolytic bath 2B′ to the container bath 4 via the line 81, and is again supplied to the cathode cell 2c of the first electrolytic bath 2A′ by the circulating pump P2 via the line 82, which is then again electrolyzed. The operation is repeated in the second electrolytic bath 2B′.
In FIG. 2-B, because alkaline ionized water produced in the cathode cells 2c of the plural electrolytic baths 2A′ and 2B′ one by another is circulated and supplied as an electrolysis solution, to be electrolyzed by repeatedly applying electrolytic voltage, a cation is accumulated in the alkaline ionized water in a short period of time, and alkaline ionized water having a high pH value can be effectively produced. When the pH value becomes a desired value, the alkaline ionized water is withdrawn by operating the water collecting means 900.
FIGS. 3 to 7 show the first embodiment of the apparatus of the invention. The first embodiment is to conduct the most preferred first embodiment of the manufacturing method of the invention. In FIGS. 3 and 4, numeral 1 denotes a housing in the form of a box, which can be opened and closed by a lid 1a, which also serves as a control panel. A sub-housing 1b having a smaller size than the housing 1 is provided adjacent to the housing 1. The sub-housing 1b has a lid.
Numeral 5 denotes a supplying means supplying raw material water of alkaline ionized water with adjusting its quality, a representative example of which includes a pure water manufacturing apparatus. In this example, a pure water manufacturing apparatus of cartridge type, in which an ion exchange resin is filled in a cartridge, which is freely exchangeable, is employed, and removably attached to the sub-housing 1b.
The electrolytic bath 2 has, as shown in FIG. 6, a diaphragm (anion exchange membrane) 2d and a diaphragm (cation exchange membrane) 2d′ in the central part of the bath body. By the diaphragms, an intermediate cell 2b is provided on the center, and an anode cell 2a and a cathode cell 2c are provided on both sides of the intermediate cell 2b. In the anode cell 2a and the cathode cell 2c, an anode electrode 2e and a cathode electrode 2f are provided, respectively, and face each other. The anode electrode 2e and the cathode electrode 2f are connected to a direct-current power source 110 containing a rectifier attached at an upper part of the housing.
Numeral 6 is an electrolysis solution circulating line containing the circulating pump P1, which has a first line part 60, a second line part 61 and a third line part 62 as shown in FIGS. 4 and 5. The first line part 60 is connected at one end to the intermediate cell 2b of the electrolytic bath 2, and at the other end to an outlet of the circulating pump P1. The second line part 61 is connected at one end to an inlet of the electrolysis solution bath 3, and at the other end to an outlet of the intermediate cell 2b of the electrolytic bath 2. The third line part 62 is connected at one end to a lower part of the electrolysis solution bath 3, and at the other end to an inlet of the circulating pump PI.
Numeral 7 denotes a raw material water supplying line, which is introduced from the outside to the inside of the housing as shown in FIG. 5. The raw material water may be arbitrarily water for industrial use, tap water or well water. The supplying line 7 has on the upper side a letdown valve 700 to control the water pressure to the prescribed pressure, and a line part 70 at the lower side is connected to the anode cell 2a of the electrolytic bath 2. On the middle of the line part 70, a flow amount adjusting valve 701 of manually operation type or electromagnetic operation type, and a switch valve 702 for terminating supply of raw material water to the anode cell 2a on stopping the operation are provided.
The first line part 80 is connected at one end to a lower part of the circulation container bath 4, and at the other end to an inlet of the circulating pump P2. The second line part 81 is connected at one end to an upper part of the circulation container bath 4, and at the other end to an outlet of the cathode cell 2c of the electrolytic bath 2. The third line part 82 is connected at one end to an outlet of the circulating pump P2, and at the other end to an inlet of the cathode cell 2c of the electrolytic bath 2. Therefore, by operating the circulating pump P2, raw material water or alkaline ionized water produced in the cathode cell 2c is supplied to the cathode cell 2c via the second line part 81, the circulation container bath 4, the first line part 80 and the third line part 82, to form a circulation system.
Numeral 10 denotes a withdrawing line of acidic water, which is connected at one end to an outlet of the anode cell 2a of the electrolytic bath 2, and the other end is withdrawn from the housing 1 to the outside. In some cases, a water collecting device, such as a pump, may be provided on the middle of the withdrawing line.
In FIG. 4, numeral 11 denotes a control means provided on an upper part of the housing 1. The control means 11 has, in addition to the direct-current power source 110, a relay circuit 112 and a controller 111 having a sequence circuit that controls operation of the various parts of the apparatus according to a prescribed program, an example of which is shown in FIG. 9. A pH meter 12 for indicating a desired pH value of alkaline ionized water is attached to the lid 1a.
The electrolytic bath 2 is equipped with a temperature sensor 21 detecting the temperature of the electrolysis solution as shown in FIG. 5. The temperature sensor 21 is connected to a thermometer 15 provided on the lid 1a, and is electrically connected to the controller 111. When the temperature of the electrolysis solution exceeds the prescribed temperature, it generates a signal, which automatically turns off the electrolytic current relay of the direct-current power source 110.
The lid 1a further has a power switch 16, an automatic-manual changeover switch 17, and an ammeter 19, which are connected to the controller 111 and the power source 110.
The vending machine 18 contains, in a housing 18a, a container bath 180 connected to an end of the second line part 91 of the withdrawing line 9 of alkaline ionized water, and a withdrawing valve 181 for withdrawing alkaline ionized water in the container bath 180 through opening by the insertion of a coin is provided at a lower part of the container bath 180.
By the operation of the circulating pump P2, pure water is withdrawn from the circulation container bath 4 via the first line part 80, and exhausted from the circulating pump P2. It is supplied to the cathode cell 2c of the electrolytic bath 2 via the third line part 82, and then returned from the cathode cell 2c to the circulation container bath 4 via the second line part 81.
By the operation of the circulating pump P1, the electrolysis solution is withdrawn from the electrolysis solution bath 3 and supplied to the intermediate cell 2b of the electrolytic bath 2 via the third line part 62 and the first line part 60, and then returned from the intermediate cell 2b to the electrolysis solution bath 3 via the second line part 61, to constitute a circulation system.
By opening the switching valve 702, tap water, which is evacuated to a prescribed pressure by the letdown valve 700, is supplied to the anode cell 2a of the electrolytic bath 2.
In the electrolytic bath 2, electrolytic voltage is applied between the anode electrode 2e and the cathode electrode 2f, and water containing an electrolyte is electrolyzed as described in the explanation of FIG. 1-A. Pure water becomes alkaline ionized water in the cathode cell 2c, and then returned to the circulation container bath 4 by the circulation system. It is again supplied to the cathode cell 2c of the electrolytic bath 2 by the circulating pump P2, and the operation, in which it is electrolyzed, is repeated. Accordingly, the alkaline ionized water is repeatedly subjected to application of electrolytic voltage, and its pH value is increased.
On the other hand, tap water supplied to pass the anode cell 2a becomes acidic water by electrolysis, and is continuously withdrawn to the outside by the acidic water withdrawing line 10.
The pH value of the alkaline ionized water in the course of production is continuously measured by the pH measuring device 41 provided in the circulation container bath 4. Its signal is sent to the pH meter 12 to be continuously indicated, and is inputted from the pH meter 12 to the controller 111 to compare and evaluate its level. When it is assumed that the set value of the pH meter 12 is 12.5, for example, the alkaline ionized water is repeatedly circulated between the circulation container bath 4 and the cathode cell 2c, and the operation, in which electrolytic voltage is repeatedly applied, is continued until the pH value reaches this value.
In the invention, alkaline ionized water produced in the cathode cell 2c of the electrolytic bath 2 itself is repeatedly supplied to the cathode cell 2c of the electrolytic bath 2, so as to be subjected to application of electrolytic voltage. Accordingly, a cation is effectively accumulated in the alkaline ionized water, and its pH value is increased. When it reaches the desired set pH value, for example pH 12.5, the signal is inputted from the pH measuring device 41 to the pH meter 12 and the controller 111, and a signal is generated by the controller 111, so as to terminate the operation of the circulating pump P2 and the supply of electrolytic current, and to close the switch valve 702 on the supplying line part 70.
In the invention, the resulting alkaline ionized water is circulated and supplied to the cathode cell 2c of the electrolytic bath 2 by using the circulation container bath 4 of alkaline ionized water and the circulating pump P2. Therefore, high alkaline ionized water having a pH value exceeding 12.0 and redox potential exceeding −800 mV can be produced by arbitrarily changing the time of electrolysis. Because a prescribed amount of alkaline ionized water stored in the circulation container bath 4 is circulated to accumulate a cation to obtain a high pH value, it does not suffer from influence of change in electrolytic current due to change in concentration and temperature of the electrolysis solution, and therefore alkaline ionized water of good precision with less fluctuation in pH vale can be produced.
After the withdrawal of alkaline ionized water having a desired pH value, raw material water corresponding to the loss in weight is supplied to the circulation container bath 4, so that a constant amount of the resulting alkaline ionized water is circulated between the circulation container bath 4 and the cathode cell 2c by the circulating pump P2, and thus the electrolytic bath 2 may be of small size and low capacity. Therefore, the incidental electrolysis solution bath 3 may be a compact one, and a large amount of alkaline ionized water can be produced by a relatively compact apparatus.
1) As the apparatus, one shown in FIGS. 3 to 9 was used. An electrolytic bath having an electrolysis solution cell having a capacity of 60 ml at the center, and an anode cell 2a and a cathode cell 2c each having a capacity of 75 ml on both sides was used. As the electrolysis solution bath, a container made of polyvinyl chloride having a capacity of 10 L was used. As the circulation container bath of the alkaline ionized water, a container made of polyvinyl chloride having a capacity of 30 L was used. As the pure water manufacturing means, a pure water manufacturing apparatus filled with an ion exchange resin having a resin capacity of 5 L and a pure-water manufacturing capacity of 950 L/C was used.
TABLE 1 Number of live bacteria per 1 ml of test liquid Imme- Test diately After 30 After 1 After 5 bacteria Test liquid after start seconds minute minutes Colon Second ionized 5.1 × 107 <10 <10 <10 bacillus water pH 12.5 0517 Comparative 5.8 × 107 1.9 × 107 2.1 × 107 1.4 × 107 ionized water pH 12.0
TABLE 2 Immediately After 30 After 5 After 15 Test bacteria Test liquid after start seconds minutes minutes Pseudomonas First 8.0 × 1.4 × 1.1 × 80 aeruginosa ionized 107 107 106 water pH 12.3 Second 2.6 × 4.9 × <10 <10 ionized 107 102 water pH 12.5 Comparative 8.0 × 1.6 × 9.4 × 9.5 × ionized 107 107 106 105 water pH 12.0 Salmonella First 5.2 × 1.7 × 1.2 × 8.6 × enteritidis ionized 107 106 105 102 water pH 12.3 Second 1.2 × <10 <10 <10 ionized 107 water pH 12.5 Comparative 5.2 × 1.4 × 7.8 × 6.3 × ionized 107 107 106 106 water pH 12.0 Staphylococcus First 1.2 × 1.1 × 1.1 × 8.0 × aureus ionized 108 108 108 107 water pH 12.3 Second 4.6 × 3.9 × 3.0 × 7.0 × ionized 107 107 107 106 water pH 12.5 Comparative 1.2 × 1.2 × 1.3 × 9.6 × ionized 108 108 108 107 water pH 12.0
5833831 November 10, 1998 Kitajima et al.
Patent number: 6464845
Patent Publication Number: 20020036134
Assignee: Chemicoat & Co., Ltd. (Chiba)
Inventors: Kazuhiro Shirota (Urayasu), Akira Isaka (Urayasu)
Application Number: 09/852,243
Current U.S. Class: With Feeding And/or Withdrawal Means (204/263); With Current, Voltage, Or Power Control Means (204/230.2); Recirculation (204/237); With Feeding And/or Withdrawal Means (204/257)