JP5397909B2 - Method for producing biological water containing stabilized gaseous nanobubbles and biological water - Google Patents

Description

  The present invention relates to a method for producing biological water containing nanobubbles stabilized with various gases such as oxygen and ozone, and biological water.

  Conventionally, bubbles of about 10 μm to several tens of μm, so-called microbubbles, have been used for aquaculture of marine products such as oysters and scallops. On the other hand, in recent years, attention has been drawn to water containing nanobubbles of a desired level such as oxygen, ozone, and nitrogen, which are finer than nanobubbles, that is, nano-sized bubbles.・ Application to various fields such as aquaculture is being made.

  For example, Non-Patent Document 1 describes the basics and engineering applications of microbubbles and nanobubbles. Non-Patent Documents 2 to 4 describe application to the medical field using ozone nanobubble sterilization ability, ozone nanobubble cell activation ability, tissue preservation ability, and the like. Non-Patent Document 5 describes the application to agriculture, and Non-Patent Document 6 describes the application of micro- or nano-bubbles to the aquaculture / culture field. In addition, Non-Patent Document 1 describes a measurement method using a dynamic light scattering photometer and a measurement method using an electron spin resonance method (ESR) that measures free radicals caused by nanobubbles as a nanobubble analysis method. .

  Furthermore, the generation mechanism of microbubbles, the mechanism of stabilization as nanobubbles, and the conceptual stabilization method are described in Non-Patent Document 1, and Patent Document 1 discloses a method for producing ozone nanobubble water. As a specific example, Patent Document 2 describes a specific example of a method for producing oxygen nanobubble water.

  That is, in the method for producing ozone nanobubbles or oxygen nanobubbles described in Patent Document 1 or Patent Document 2, ozone or oxygen is supplied as fine bubbles having a diameter of 10 to 50 μm to raw water mixed with electrolyte ions of minerals. Then, by applying physical stimuli such as shock wave accompanying underwater discharge and compression, expansion and vortex generated during the flow of water, the microbubbles are reduced. At this time, hydrogen ions, hydroxide ions and electrolyte ions are gasified. By acting as a shell surrounding the microbubbles concentrated and reduced at the liquid interface, the reduced microbubbles, that is, ozone nanobubbles or oxygen nanobubbles are stabilized and exist in water.

  In these Patent Documents 1 and 2, ozone or oxygen is contained as nanobubbles having a bubble center particle size of about 140 nm or about 150 nm, and these are almost at the time of production for a long period of one month or more. It can be maintained in a state.

  In the present invention, microbubbles in which hydrogen ions, hydroxide ions, and electrolyte ions surround and stabilize the microbubbles are referred to as “nanobubbles”. In the present invention, as described above, the operation of applying a physical stimulus to reduce the microbubbles is referred to as “collapse”.

  And as described in Item 3 of Non-Patent Document 2, the water containing nanobubbles as described above is not only capable of preserving tissues but also various titers and sterilizing capabilities such as repair and regeneration. In Non-patent Document 3, the application to periodontal disease treatment using the strong bactericidal effect of water containing ozone nanobubbles (10-30 times bactericidal effect compared with chlorine-based bactericides) Reported improvement in periodontal pockets and decrease in BOP due to gargle.

  Here, considering the use form of microbubbles that have been widely used, the lifetime is about 10 minutes at the longest, although it depends on the particle size. As described above, nanobubbles of at least one month or more are used. Since it is very short compared with the lifetime of the above, it is not possible to consider a usage mode in which water containing microbubbles produced in advance is filled and stored in a container, and taken out from the container and used as needed.

  On the other hand, the lifetime of the nanobubbles according to the present invention is at least one month or more as shown in Patent Document 1 and Patent Document 2 described above, so the water containing the manufactured nanobubbles is filled in a container. It is possible to adopt a form that is stored and removed from the container and used as necessary.

Japanese Patent No. 4059506 Japanese Patent No. 4080440

Takahashi, “Basics and Engineering Applications of Micro Bubbles and Nano Bubbles”, Monthly Material Integration, T.I.C., April 25, 2009, Vol. 22, No. 5, p. 2-19 Kanno, “Application of nanobubbles to the medical field”, Monthly Material Integration, T.I.C., April 25, 2009, Vol. 22, No. 5, p. 30-35 Arakawa, 2 others, “Application of nanobubble water to periodontal disease treatment”, Monthly Material Integration, T.I.C., April 25, 2009, Vol. 22, No. 5, p. 36-43 Hokushin, “Anti-inflammatory and anti-cell proliferation effects of ozone nanobubbles: effects on vascular endothelium and smooth muscle cells”, Monthly Material Integration, T.I.C., April 25, 2009, Volume 22, Volume 5 No., p. 44-48 Tamaki, “Possibility of using microbubbles in the agricultural field-Sterilization of hydroponic culture using ozone microbubbles”, Monthly Material Integration, T.I.C., April 25, 2009, No. Vol. 22, No. 5, p. 20-23 Yamamoto, “Application of microbubbles to aquaculture and aquaculture”, Monthly Material Integration, T.I.C., April 25, 2009, Vol. 22, No. 5, p. 24-29

  As described above, since water containing microbubbles that has been widely used in the past has a short lifetime, the container can be filled and stored, so the container is filled. The idea of adjusting the concentration of water microbubbles could not occur.

  For this reason, even in water containing nanobubbles that can be filled and stored in a container, attempts to improve the usefulness for living bodies by increasing the concentration of the nanobubbles have never been conceived.

  The present invention was devised in view of the above points, and is useful for a living body by increasing the concentration of the nanobubble with respect to water useful for the living body by including nanobubbles. The purpose is to improve the above.

  In order to solve the above-mentioned problems, the present invention supplies raw water with gas as microbubbles having a size of 50 μm or less, and the microbubbles are crushed by physical stimulation to contain stabilized gas nanobubbles in water. Proposed is a method for producing biomedical water, characterized in that the intermediate water is generated, the intermediate water is supplied to a centrifugal extractor and taken out from the light liquid side.

  In the present invention, it is proposed that the raw water is adjusted to a salt concentration of 0.9% or a value in the vicinity thereof in the above configuration.

In the present invention, it is proposed that in the above configuration, the desalting treatment is performed by allowing the intermediate water to pass through the reverse osmosis membrane before being supplied to the centrifugal extractor .

  Further, the present invention proposes that in the above configuration, desalting treatment is performed by allowing the biological water extracted from the light liquid extraction side to permeate the reverse osmosis membrane.

  In the present invention described above, the centrifugal extractor may be a batch type or a continuous type, and in the latter case, it can be configured in multiple stages.

  Furthermore, the present invention proposes biological water produced by the above production method. And in this invention, the water for biological bodies by which the salt water concentration was adjusted by mixing the water for biological bodies from which salt concentration differs is proposed.

  When intermediate water containing stabilized nanobubbles in water is supplied to a centrifugal extractor and subjected to centrifugal extraction, the nanobubbles move to the light liquid side, so the concentration of nanobubbles in the water extracted from the light liquid side Becomes higher than the concentration of nanobubbles in the intermediate water introduced into the centrifugal extractor.

FIG. 1 is a system diagram showing the flow of the first embodiment of the manufacturing method of the present invention. FIG. 2 is a system diagram showing the flow of the second embodiment of the manufacturing method of the present invention. FIG. 3 is a system diagram showing the flow of the third embodiment of the manufacturing method of the present invention. FIG. 4 is a schematic longitudinal sectional view showing an example of a centrifugal extractor used in the production method of the present invention.

  Embodiments of the manufacturing method of the present invention will be described below with reference to the accompanying drawings.

  First, in FIG. 1 which shows 1st Embodiment of the manufacturing method of the biomedical water of this invention, the code | symbol 1 shows raw material water (or its tank), This raw material water is salinity to well water etc. which do not contain salt. Water with adjusted salinity concentration, well water containing salt, seawater, etc. can be used. The salt concentration of the raw material water is 0.9 wt%, which is the same as that of physiological saline, and is larger than that, for example, about 1.8 wt%, or conversely reduced to about half, depending on the use of biological water to be produced. It can be adjusted appropriately.

  The raw water 1 is then supplied to the crushing container 2. The crushing container 2 is supplied with gas such as oxygen, nitrogen and ozone from the gas supply device 3 as microbubbles having a size of 50 μm or less, and in this state, physical stimulation is applied and the crushing is performed. Is called. Needless to say, mixing of raw water and gaseous microbubbles can be performed in another mixing tank or the like.

  The gas supplied to the crushing container 2 as microbubbles having a size of 50 μm or less is shrunk by physical stimulation. At this time, hydrogen ions, hydroxide ions and electrolyte ions in water are concentrated at the gas-liquid interface, It acts as a shell that surrounds the periphery of the reduced microbubbles, and is stabilized and present in the water as reduced microbubbles, that is, nanobubbles, thus generating the intermediate water in the present invention.

  The produced intermediate water is then supplied to a centrifugal extractor and subjected to centrifugal extraction. That is, when a strong centrifugal force is applied to the circular extractor, water moves to the outside, which is the heavy liquid side, and the nanobubbles remain inside, which is the light liquid side, so that the concentration of nanobubbles on the light liquid side increases.

  Next, by removing the intermediate liquid on the light liquid side where the concentration of nanobubbles is increased by the action of centrifugal force in the centrifugal extractor 4, the biological water whose concentration of nanobubbles is higher than the intermediate water obtained by crushing in the crushing container 2. 5 can be obtained.

  Since this biological water 5 contains salt, it can be used for purposes other than potable water, for example, in the medical field as described in the above non-patent literature, as gargle water for preventing periodontal disease, etc. In particular, in the biomedical water produced according to the present invention, since the concentration of nanobubbles is increased, the usefulness for the living body can be further improved.

  Next, FIG. 2 shows a second embodiment of the method for producing biological water of the present invention. In this embodiment, the water is taken out from the light liquid side of the centrifugal extractor 4 in the first embodiment. Desalination treatment is performed by allowing biological water to permeate through the reverse osmosis membrane 6. Since other operations are the same as those in the first embodiment, corresponding components in the figure are denoted by the same reference numerals, and redundant description is omitted.

  Since the biological water 7 produced in the second embodiment has been desalted by the reverse osmosis membrane 6, it should be used as potable water having utility for the living body due to the contained nanobubbles. Can do.

  Next, FIG. 3 shows a third embodiment of the method for producing biological water according to the present invention. In this embodiment, as in the first and second embodiments, the crushing container 2 is subjected to crushing. Instead of supplying the obtained intermediate water to the centrifugal extractor 4 as in the second embodiment, first, the reverse osmosis membrane 8 is permeated to perform desalting, and then the container 2 for crushing is performed again. The intermediate water generated by the second crushing is supplied to the centrifugal extractor 4 for centrifugal extraction. The intermediate water taken out from the light liquid side of the centrifugal extractor 4 is defined as biological water 7.

  Also in this third embodiment, since desalination treatment is performed as in the second embodiment, it should be used as potable water having utility for the living body due to the contained nanobubbles. Can do.

  In particular, in the third embodiment, since a part of the nanobubbles removed by permeating the reverse osmosis membrane 6 can be compensated by the second crushing, the nanobubbles contained in the biological water as drinking water The concentration of can be increased.

  In the present invention, the biological water having the salt produced in the first embodiment described above and the biological water having no salt produced in the second or third embodiment are mixed, It is also possible to obtain biological water having a desired salt concentration, and from this, it is possible to produce biological water as drinking water having a desired salt concentration.

  Next, FIG. 4 shows an example of a centrifugal extractor that can be used in the present invention. The centrifugal extractor shown in FIG. 4 is used in a radioactive substance extraction step in the reprocessing of spent fuel in a nuclear reactor, and has substantially the same configuration as that described in, for example, Japanese Patent Application Laid-Open No. 11-290606. It is.

  Reference numeral 11 denotes a casing, and a cylindrical body 12 is supported in the casing 11 by a rotating shaft 14 that is driven to rotate by a motor 13 so as to rotate at a high speed. A water inlet 15 is provided in the lower part of the cylindrical body 12, and an outer heavy liquid side outlet 16 and an inner light liquid side outlet 17 are provided in the upper part. Further, the casing 11 has a water introduction part 18 at the bottom, and a heavy liquid side lead part 19 and a light liquid side lead part 20 that communicate with the heavy liquid side outlet 16 and the light liquid side outlet 17, respectively. Is provided. Although not shown in the drawings, the inner periphery of the cylinder 12 is provided with blades and the like for turning water together with the cylinder.

  In the above configuration, the intermediate water introduced from the water introduction part 18 of the casing 11 is introduced into the cylinder 12 through the lower water introduction port 15 and swirls together with the cylinder 12 at a high speed.

  Therefore, since strong centrifugal force is applied to the intermediate water containing nanobubbles by swirling, the water itself tends to move to the outside, which is the heavy liquid side a, and the nanobubbles tend to stay inside, which is the light liquid side b. Thus, the concentration of nanobubbles on the light liquid side b increases.

  Thus, the intermediate liquid on the light liquid side where the concentration of nanobubbles has increased can be extracted from the light liquid side outlet 17 through the light liquid side outlet 20 as biological water.

  On the other hand, the intermediate water on the heavy liquid side a in which the concentration of nanobubbles is reduced is led out from the heavy liquid side outlet 16 through the heavy liquid side outlet 19 and is crushed again as shown in FIGS. Can be used.

  Although the centrifugal extractor 4 demonstrated above is a continuous type structure, in the manufacturing method of this invention, a batch-type centrifugal extractor can be utilized as a centrifugal extractor. On the other hand, in the case of a continuous type, it can be configured in multiple stages as is conventionally done.

1 Raw water (or its tank)
2 Crushing container 3 Gas supply device 4 Centrifugal extractors 5, 7, 8 Biological water 6 Reverse osmosis membrane 11 Casing 12 Tube 13 Motor 14 Rotating shaft 15 Water inlet 16 Heavy liquid outlet 17 Light liquid outlet 18 Water introduction part 19 Heavy liquid side derivation part 20 Light liquid side derivation part

Claims (9)

Gas is supplied to the raw water as microbubbles with a size of 50 μm or less, and the microbubbles are crushed by physical stimulation to generate intermediate water containing stabilized nanobubbles in water. A method for producing biological water, characterized in that it is supplied to a centrifugal extractor and taken out from the light liquid side. The method for producing biomedical water according to claim 1, wherein the raw material water has a salt concentration adjusted to 0.9% or a value in the vicinity thereof. The method for producing biological water according to claim 1, wherein the desalting treatment is performed by allowing the intermediate water to pass through the reverse osmosis membrane before being supplied to the centrifugal extractor . The method for producing biological water according to claim 1, wherein the biological water extracted from the light liquid extraction side is permeated through a reverse osmosis membrane to perform desalting treatment. The method for producing biological water according to claim 1, wherein the centrifugal extractor is of a batch type. The method for producing biological water according to claim 1, wherein the centrifugal extractor is a continuous type. The method for producing biological water according to claim 6, wherein the centrifugal extractor is configured in multiple stages. The water for biological bodies produced | generated by the manufacturing method in any one of Claims 1-7. The biological water according to claim 8, wherein the biological water having different salinity concentrations is mixed to adjust the salinity concentration.

Images