JP2012239938A - Water-quality improvement apparatus, water-quality improving method and metal ion water generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water-quality improvement apparatus capable of improving water quality inexpensively with a simple configuration.SOLUTION: The water-quality improvement apparatus 30 includes a metal fiber 35 made of a copper/zinc alloy or copper and a packing container 34 packed with the metal fiber 35. A large number of tooth-like protrusions 35A are formed on the surface of the metal fiber 35. The packing container 34 has a cylindrical part 32 formed with a large number of water passing holes 31. Silica and scale ingredients contained in water introduced into the packing container 34 can be removed by copper and zinc ions eluting from the metal fiber 35.

Description

  The present invention relates to a water quality improvement device and a water quality improvement method. Moreover, this invention relates to the metal ion water production | generation apparatus which produces | generates the metal ion water containing a metal ion.

  Water quality improvement technology is required in various situations. For example, in the cooling tower for cooling the cooling water used in the heat exchanger, the cooling circulating water whose temperature has risen in the heat exchanger returns to the cooling tower, so that algae, aoko, and bacteria are inside the cooling tower. Occurring or condensing the cooling circulating water may cause silica or scale to accumulate in the piping, blocking the piping and reducing the heat exchange efficiency. In addition, Legionella may proliferate from such a scale. For this reason, the inside of cooling towers and piping must be periodically cleaned and managed. If regular cleaning and management are not performed, filamentous fungi are generated.

  Conventionally, chemicals have been used to remove these harmful substances (see, for example, Patent Document 1), but the cooling circulating water is evaporated and concentrated during cooling by the heat of vaporization. In such a case, it is necessary to appropriately treat chemical components contained in the waste water. In particular, wastewater COD (Chemical Oxygen Demand) has become a problem in recent years, and its maintenance cost is also high.

  In ponds and lakes, chemicals are used to remove algae such as sea cucumbers, and ozone gas is used to purify them, but the equipment and processing costs are significant. In addition, there are problems such as adverse environmental impacts and ecosystems.

  Furthermore, ice is used when storing and transporting fresh products such as fish. However, as ice melts, there is a problem that freshness decreases and bacteria propagate.

JP 2010-194402 A

  The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to provide a water quality improvement device capable of improving the water quality at a low cost with a simple configuration.

  Another object of the present invention is to provide a water quality improvement method that can improve water quality easily and inexpensively.

  Furthermore, an object of this invention is to provide the metal ion water production | generation apparatus which can produce | generate the metal ion water containing a high concentration metal ion in a very short time.

  According to the 1st aspect of this invention, the water quality improvement apparatus which can improve water quality cheaply with simple structure is provided. This water quality improvement device includes a metal fiber made of an alloy of copper and zinc or copper, and a filling container filled with the metal fiber. A large number of tooth-like projections are formed on the surface of the metal fiber. The filling container may include a curved surface portion in which a large number of water passage holes are formed.

  The water quality improvement apparatus may further include a fine bubble generator that generates fine bubbles in water that has passed through the inside of the filling container. Such a fine bubble generator includes a bubble generating portion having a streamlined internal space with low flow resistance, an opening for discharging the water in the internal space to the outside, and a tangential direction of the internal space of the bubble generating portion from the outside And a gas supply pipe that introduces gas into the swirling flow generated in the internal space of the bubble generating portion.

  The filling container may be accommodated in the internal space of the bubble generating portion of the fine bubble generator, or the filling container may be disposed inside the ejection pipe of the fine bubble generator.

  The filling container may include a cylindrical portion in which the water passage hole is formed.

  The filling container includes a pair of hemispheres that form a spherical body by being combined with each other, a hinge portion that rotatably couples the pair of hemispheres, and the pair of hemispheres And a lock portion that locks the combined state.

  According to the 2nd aspect of this invention, the water quality improvement method which can improve water quality simply and cheaply is provided. In this water quality improvement method, water is introduced into the filling container through a large number of water passage holes. The water is brought into contact with an alloy of copper and zinc or metal fibers made of copper filled in the filling container. A large number of tooth-like projections are formed on the surface of the metal fiber. The water quality of the water is improved by the redox action of metal ions (copper ions / zinc ions) eluted from the metal fibers.

  That is, due to the reducing action of metal ions eluted from the metal fibers, heavy metals such as arsenic, lead, cadmium, and mercury are adsorbed on the metal fibers, and magnesium contained in the chlorophyll of algae such as blue sea bream is reduced and decomposed. The water quality of the water is improved, for example, the inside bow does not emerge.

  As the above water, as circulating water circulating in a predetermined system, cooling water used in a cooling tower, seawater cooling cooling water used in a power plant, water used for hydroponics, or alternative or inorganic pesticides Water to be used, fish farming water, water in drinking water servers, water in bathtubs, water containing heavy metals, water in humidifiers, water in toilet tanks, water used for ice making, or ponds and lakes Water containing water can be used.

  Moreover, it is good also as performing the prevention of the infectious disease of livestock, or the deodorization of a barn by mist-dispersing and spraying the water by which the water quality was improved by the said water quality improvement method.

  According to the 3rd aspect of this invention, the metal ion water production | generation apparatus which can produce | generate the metal ion water containing a high concentration metal ion in a very short time is provided. The metal ion water generating device includes a water storage tank, a metal fiber made of copper and zinc or copper, a filling container filled with the metal fiber, and fine bubbles that generate fine air bubbles in the water in the water storage tank. And a generator. Many tooth-like projections are formed on the surface of the metal fiber. The fine bubble generator includes a bubble generating portion having a streamlined internal space with a low resistance to flowing water, an opening for discharging the water in the internal space to the outside, and water generated through the filling container. And a gas supply pipe for supplying gas to the swirling flow generated in the internal space of the bubble generating section. .

  The metal ion water generating device may further include a pressure control pipe connected to the sealed water storage tank, and a pressure control pump for adjusting the pressure in the water storage tank via the pressure control pipe. .

  According to the 4th aspect of this invention, the metal ion water production | generation apparatus which can produce | generate the metal ion water containing a high concentration metal ion in a very short time is provided. This metal ion water generating device is immersed in a water tank, a metal fiber made of copper and zinc alloy or copper, a fine bubble generator for generating fine bubbles in the water in the water tank, and the water tank. And a filling container. The filling container accommodates the fine bubble generator and the metal bubbles are filled around the fine bubble generator. Many tooth-like projections are formed on the surface of the metal fiber. The fine bubble generator includes a bubble generating portion having a streamlined internal space with low flow resistance, an opening for discharging water in the internal space to the outside, and water is ejected in a tangential direction of the internal space of the bubble generating portion. And an ejection pipe for generating a swirling flow in the internal space, and a gas supply pipe for supplying gas to the swirling flow generated in the internal space of the bubble generating section. The said metal ion water production | generation apparatus is further provided with the water supply pump which supplies the water inside the said storage tank to the ejection pipe | tube of the said fine bubble generator.

  According to the 5th aspect of this invention, the metal ion water production | generation apparatus which can produce | generate the metal ion water containing a high concentration metal ion in a very short time is provided. The metal ion water generating device includes a water storage tank, a copper-zinc alloy or a metal fiber made of copper, a filling container immersed in the water storage tank, and water inside the water storage tank inside the filling container. And a water supply pump for supplying the water. Many tooth-like projections are formed on the surface of the metal fiber. The filling container has an opening at the top, and the inside of the filling container is filled with the metal fiber.

  As the above water, as circulating water circulating in a predetermined system, cooling water used in a cooling tower, seawater cooling cooling water used in a power plant, water used for hydroponics, or alternative or inorganic pesticides Water to be used, water used for preventing infectious diseases of livestock or deodorizing storage, water for fish farming, water containing heavy metals, water used for ice making, or water containing sea cucumbers can be used.

  According to the present invention, the components of silica and scale contained in the water introduced into the filled container can be removed by copper ions or copper ions and zinc ions eluted from the metal fibers. Moreover, generation | occurrence | production of algae, blue-greens, and bacteria can be prevented by the copper ion or copper ion and zinc ion which elute from a metal fiber, and generation | occurrence | production of red rust, colon_bacillus | E._coli, and Legionella can also be prevented. Therefore, the water quality can be improved at a low cost with a simple configuration.

It is a schematic diagram which shows the cooling tower system containing the water quality improvement apparatus which concerns on the 1st Embodiment of this invention. It is a top view which shows the water quality improvement apparatus of FIG. It is the III-III sectional view taken on the line of FIG. It is sectional drawing which shows typically the metal fiber contained in the water quality improvement apparatus of FIG. It is a front view which shows the water quality improvement apparatus in the 2nd Embodiment of this invention. It is a rear view of the water quality improvement apparatus shown in FIG. It is a right view of the water quality improvement apparatus shown in FIG. It is a left view of the water quality improvement apparatus shown in FIG. It is a front view when the filling container of the water quality improvement apparatus shown in FIG. 5 is opened. It is a longitudinal cross-sectional view of the water quality improvement apparatus which concerns on the 3rd Embodiment of this invention. It is a top view of the water quality improvement apparatus shown in FIG. It is a schematic diagram which shows the modification of the water quality improvement apparatus which concerns on the 3rd Embodiment of this invention. FIG. 13A is a diagram schematically showing the state of bubbles in the liquid, and FIG. 13B is a diagram schematically showing the metal ion water generated by the metal ion water generator of FIG. . It is a schematic diagram which shows the other modification of the water quality improvement apparatus which concerns on the 3rd Embodiment of this invention. It is a schematic diagram which shows the water quality improvement apparatus which concerns on the 4th Embodiment of this invention. It is a perspective view which shows the cooling tower containing the water quality improvement apparatus which concerns on the 5th Embodiment of this invention. It is a perspective view which shows the dropping water tank of the cooling tower of FIG. It is a disassembled front view which shows a part of water quality improvement apparatus of the cooling tower of FIG. It is a top view which shows the upper housing of the water quality improvement apparatus of FIG. It is a schematic diagram which shows the power plant cooling water cooling system containing the water quality improvement apparatus which concerns on the 6th Embodiment of this invention. It is a schematic diagram which shows the structure of the water quality improvement apparatus of FIG. It is a schematic diagram which shows one chamber of the water quality improvement apparatus of FIG. It is a schematic diagram of the XXIII-XXIII line cross section of FIG. It is a graph which shows the change of a copper ion concentration when using the water quality improvement apparatus which concerns on the 4th Embodiment of this invention. It is a schematic diagram which shows the water quality improvement apparatus which concerns on other embodiment of this invention.

  Hereinafter, an embodiment of a water quality improvement apparatus according to the present invention will be described in detail with reference to FIGS. 1 to 25. In FIG. 1 to FIG. 25, the same or corresponding components are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 1 is a schematic diagram showing a cooling tower system including a water quality improvement apparatus according to the first embodiment of the present invention. The cooling tower system shown in FIG. 1 is for cooling a heat medium from an air conditioner 10 installed in an office building or the like, and includes an air conditioner 10, a heat exchanger 12, and a cooling tower 14. .

  As shown in FIG. 1, the heat medium from the air conditioner 10 is introduced into the heat exchanger 12 through the heat medium pipe 16 and returns to the air conditioner 10 again. Moreover, the cooling water of the cooling tower 14 is introduced into the heat exchanger 12 through the cooling water pipe 18 and returns to the cooling tower 14 again (circulated water). The heat medium from the air conditioner 10 is cooled by heat exchange with cooling water in the heat exchanger 12.

  The cooling tower 14 includes a fan 20 provided in an upper portion, an upper water tank 22 that stores cooling water from the heat exchanger 12, a honeycomb-shaped filler 24, and a lower water tank 26 that stores cooled cooling water. And a water quality improvement device 30 installed inside the lower water tank 26. In the present embodiment, the water quality improvement device 30 is installed only in the lower water tank 26, but the water quality improvement device 30 can also be installed in the upper water tank 22 or other parts.

  The cooling water whose temperature has risen due to heat exchange in the heat exchanger 12 is returned to the upper water tank 22 through the cooling water pipe 18 and is sprayed from the upper water tank 22 to the filler 24. The sprayed cooling water comes into contact with the outside air forcedly fed by the fan 20 on the filler 24 and is cooled. The cooling water whose temperature has been lowered is stored in the lower water tank 26 and is sent to the heat exchange 12 again to be used for cooling the heat medium from the air conditioner 10.

  FIG. 2 is a plan view showing the water quality improvement device 30, and FIG. 3 is a cross-sectional view taken along the line III-III of FIG. As shown in FIGS. 2 and 3, the water quality improvement device 30 includes a cylindrical portion 32 in which a large number of water passage holes 31 are formed, and caps 33 attached to both ends of the cylindrical portion 32. A filling container 34 is formed by the cylindrical portion 32 and the cap 33. The cap 33 is detachably attached to the cylindrical portion 32.

  As shown in FIG. 3, the filling container 34 is filled with metal fibers 35 made of an alloy of copper and zinc. The composition ratio of copper and zinc in the metal fiber 35 is not particularly limited. For example, an alloy of 70% copper-30% zinc or an alloy of 65% copper-35% zinc can be used. Further, a metal fiber made of simple copper can also be used as the metal fiber 35.

  FIG. 4 is a cross-sectional view schematically showing one metal fiber 35. The diameter of the cross section of the metal fiber 35 is, for example, about 80 μm, and a large number of tooth-like protrusions 35A are formed on the surface of the metal fiber 35 as shown in FIG. Due to the large number of tooth-like protrusions 35A, the surface area of the metal fiber 35 is much larger than that of a normal alloy fiber. The metal fiber 35 having such a tooth-like projection 35A can be manufactured by, for example, a cutting method.

  When the water quality improvement device 30 having such a configuration is installed in the lower water tank 26, the cooling water in the lower water tank 26 comes into contact with the metal fibers 35 through the water passage holes 31 of the cylindrical portion 32, and copper ions from the metal fibers 35. And zinc ions are eluted. The redox action of these copper ions and zinc ions removes algae, aoko, bacteria, Legionella, silica and scales in the cooling water.

  Thus, in this embodiment, since the water quality improvement apparatus 30 is installed in the lower water tank 26, the components of silica and scale contained in the cooling water are removed by the copper ions and zinc ions eluted from the metal fibers 35. It is possible to prevent the cooling water pipe 18 from being blocked. In addition, it is possible to prevent the generation of algae, blue seaweeds, and bacteria inside the cooling tower 14 by the copper ions and zinc ions eluted from the metal fibers 35. Furthermore, it is possible to prevent red rust, Escherichia coli, and Legionella bacteria from being generated in the cooling water pipe 18.

  As described above, the conventional method of removing harmful substances using chemicals necessitates appropriate treatment of chemical components contained in the wastewater, and the maintenance cost increases. According to the water quality improvement device 30 of the embodiment, the quality of the cooling water can be improved without using any chemicals and without particularly performing maintenance. Therefore, the COD of the waste water can satisfy the standard value without using chemicals. Moreover, since the electrical conductivity of cooling water becomes low compared with the case where a chemical is used, the amount of replenishing water required can be reduced, and a water bill can be reduced.

  Moreover, since the harmful substance contained in the cooling water is removed by the water quality improvement device 30, the efficiency of the heat exchanger 12 can be increased, and as a result, it contributes to the reduction of power consumption and the emission reduction of carbon dioxide. it can.

  In particular, in the water quality improvement device 30 in the present embodiment, since a large number of water passage holes 31 are formed in the cylindrical portion 32, more cooling water can be introduced into the filling container 34. Furthermore, since many tooth-like projections 35 </ b> A are formed on the surface of the metal fiber 35 inside the filling container 34, the contact area between the cooling water and the metal fiber 35 can be increased. As described above, since a large amount of cooling water can be brought into contact with the metal fiber 35 in a large area, harmful substances in the cooling water can be effectively removed.

  In the present embodiment, the example in which the water quality improvement device 30 is applied to the cooling tower system, that is, the example in which the water quality improvement device 30 is applied to the cooling water in the cooling tower has been described, but the present invention is not limited to this example. It can be applied to any kind of water that needs water quality improvement.

  5 to 9 show a water quality improvement apparatus 130 according to the second embodiment of the present invention. 5 is a front view of the water quality improvement device 130, FIG. 6 is a rear view, FIG. 7 is a right side view, FIG. 8 is a left side view, and FIG. 9 is a front view when the filling container of the water quality improvement device 130 is opened. .

  As shown in FIGS. 5 to 9, the water quality improvement device 130 has a pair of hemispheres 131 </ b> A and 131 </ b> B that form a spherical body by being combined with each other. The front hemisphere 131A has a hemisphere part 132A in which a large number of water passage holes are formed by a mesh, and a flange part 133A provided on the rear end surface of the hemisphere part 132A. Similarly, the rear hemisphere 131B has a hemisphere portion 132B in which a large number of water passage holes are formed by a mesh, and a flange portion 133B provided on the front end surface of the hemisphere portion 132B.

  These hemispheres 131A and 131B are connected by a hinge part 134 provided at the lower part of the flange parts 133A and 133B, and the hemispheres 131A and 131B rotate (open and close) around the hinge part 134. ing.

  A pin 135 extending in a direction perpendicular to the flange portion 133B is provided on the upper portion of the flange portion 133B of the rear hemisphere 131B. Further, a positioning hole 136 is formed at a position corresponding to the pin 135 in the flange portion 133A of the front hemisphere 131A. When the hemispheres 131A and 131B are combined with each other, the pins 135 are inserted into the positioning holes 136, whereby the hemispheres 131A and 131B are positioned.

  Further, the flange portion 133B of the rear hemisphere 131B is provided with a lock portion 137 that can rotate around the pin 135. The lock portion 137 includes a holding portion 138 that holds the flange portions 133A and 133B that are in contact with each other from both sides, and a hook portion 139 that extends outward in the radial direction of the flange portions 133A and 133B. As described above, the pin 135 is inserted into the positioning hole 136 to perform positioning, and the locking portion 137 is rotated in a state where the front hemisphere 131A and the rear hemisphere 131B are abutted with each other, so that the hemispheres 131A and 131B are rotated. The flange parts 133A and 133B can be sandwiched by the holding part 138, and the hemispherical bodies 131A and 131B can be held in a combined state (see FIGS. 5 and 6).

  Further, from the state where the hemispherical bodies 131A and 131B are combined with each other, the locked state of the hemispherical bodies 131A and 131B can be released by putting the finger on the hook part 139 and rotating the locking part 137. In this state, the spherical filling container can be opened as shown in FIG. 9 by rotating the hemispheres 131A and 131B around the hinge part 134, respectively.

  Here, as shown in FIG. 9, the metal fiber 35 described above is accommodated in the spherical filling container constituted by the hemispheres 131 </ b> A and 131 </ b> B. In the present embodiment, as described above, since the spherical filling container can be easily opened and closed using the lock portion 137, even when the metal fiber 35 needs to be replaced, the operation is easy. become.

  In the water quality improvement device 130 according to the present embodiment, the hemispheres 131A and 131B are combined into a spherical shape, and a large number of water holes are formed in the hemispherical portions 132A and 132B constituting the spherical surface. It can be introduced into the inside of a spherical filling container. Furthermore, since many tooth-like projections 35A are formed on the surface of the metal fiber 35 accommodated in the spherical filling container (see FIG. 4), the contact area between water and the metal fiber 35 is increased. Can do. In this way, since a large amount of water can be brought into contact with the metal fiber 35 in a large area, harmful substances in the water can be effectively removed.

  FIG. 10 is a longitudinal sectional view schematically showing a water quality improvement device 230 according to the third embodiment of the present invention, and FIG. 11 is a plan view. As shown in FIG. 10, the water quality improvement device 230 in the present embodiment includes a fine bubble generator 240 that generates fine bubbles in water. The fine bubble generator 240 includes a bubble generation unit 242 having a substantially egg-shaped hollow space (internal space S) therein, a gas supply pipe 244 connected to the internal space S of the bubble generation unit 242, and bubble generation A jet pipe 246 that connects the internal space S of the part 242 and an external water supply source (not shown) is provided. The bubble generating part 242 has a streamlined inner wall and has a structure with as little flow resistance as possible.

  In the internal space S of the bubble generation unit 242 of the fine bubble generator 240, a spherical filling container 248 in which a large number of water passage holes are formed by a mesh is accommodated. The inside of the spherical filling container 248 is filled with the above-described metal fibers, that is, metal fibers made of an alloy of copper and zinc or a copper simple substance and having a number of tooth-like projections formed on the surface.

  One end of the gas supply pipe 244 is connected to the upper part of the internal space S of the bubble generating part 242, and the other end is held on the water surface W. Thereby, air is supplied to the internal space S of the bubble generating part 242 through the gas supply pipe 244. A gas other than air can be used as the gas supplied from the gas supply pipe 244.

  An upper nozzle (opening) 250 that discharges water in the internal space S to the outside is formed so as to surround the gas supply pipe 244 at the upper part of the bubble generating part 242. In addition, a lower nozzle (opening) 252 that discharges the water in the internal space S to the outside is formed at the lower part of the bubble generating part 242.

The ejection pipe 246 is attached to the side surface of the bubble generation unit 242 and is configured to face the tangential direction of the bubble generation unit 242 as shown in FIG. As a result, when pressurized water is introduced into the internal space S of the bubble generating unit 242 from the external water supply source through the ejection pipe 246 using, for example, a pressure pump, the upward swirling flow _RU and the downward swirling flow _RD are generated. It is generated in the internal space S.

Thus, when pressurized water is introduced into the internal space S of the bubble generating unit 242 from the external water supply source through the ejection pipe 246, swirl flows R _U and R _D are generated, and the center of the internal space S is generated by the swirl flows R _U and R _D. A negative pressure axis is generated in the vicinity. By the action of this negative pressure, air is sucked from the gas supply pipe 244 and taken into the swirling flows R _U and R _D as fine bubbles. In this way, the water that has taken in the fine bubbles is discharged from the upper nozzle 250 and the lower nozzle 252.

Here, the spherical filling container 248 filled with metal fibers is vigorously moved in the internal space S by the above-described swirl flows R _U and R _D , and the amount of water passing through the spherical filling container 248 increases. Therefore, more metal ions can be eluted from the metal fiber into the water, and the bactericidal action by the metal ions can be improved. Further, by generating fine bubbles in the water that has passed through the inside of the spherical filled container 248 by the fine bubble generator 240, the concentration of metal ions in the water can be increased in a very short time.

  Here, when the pressure of the pressure pump mentioned above contacts the water and the metal fiber in the bubble generating part 242 and the degree of the water pressure and the water flow resistance due to the water flow increases, the ionization of the metal ions can be activated more actively. High-concentration metal ion water can be generated in a short time.

  In the third embodiment, an example in which the spherical filling container 248 filled with metal fibers is accommodated in the internal space S of the bubble generating unit 242 of the fine bubble generator 240 has been described. It can also be arranged outside the bubble generator 240. FIG. 12 is a schematic diagram showing such a modification.

  In the example shown in FIG. 12, the above-described rotationally symmetric fine bubble generator 240 is disposed in a sealed water reservoir 260, and the ejection pipe 246 of the fine bubble generator 240 is connected to an external water supply source 262. Yes. Between the fine bubble generator 240 and the water supply source 262, a water supply pump 264 that supplies water pumped from the water supply source 262 to the fine bubble generator 240 is provided. A filling container 248 ′ having a large number of water passage holes is disposed between the water supply pump 264 and the fine bubble generator 240. The filling container 248 ′ is filled with metal fibers made of copper and zinc alloy or copper simple substance and having a number of tooth-like projections formed on the surface.

  One end of the gas supply pipe 244 of the bubble generator 240 is open to the outside of the water storage tank 260. An electromagnetic valve 245 is provided in the middle of the gas supply pipe 244. A pressure control pipe 268 is connected to the upper part of the water storage tank 260, and a pressure control pump 266 is connected to the pressure control pipe 268. The interior of the water storage tank 260 can be pressurized or depressurized by driving the pressure control pump 266. Further, a drain pipe 270 is connected to the water storage tank 260, and a drain pump 272 is connected to the drain pipe 270. By driving the drain pump 272, water inside the water storage tank 260 can be discharged to the outside.

  In such a configuration, for example, the pressure control pump 266 is driven to depressurize the inside of the water storage tank 260, and the water supply pump 264 is driven to pump water from the water supply source 262 to supply pressurized water to the fine bubble generator 240. . At this time, metal ions are eluted into the pressurized water from the metal fibers inside the filling container 248 ′ installed in the middle of the ejection pipe 246. The pressurized water containing these copper ions and zinc ions is jetted to the bubble generating part of the fine bubble generator 240.

  In the bubble generation part of the fine bubble generator 240, the pressurized water is swirled at a high speed, so that a negative pressure axis is formed at the central portion thereof. Thereby, air is sucked from the gas supply pipe 244, and air is taken in as fine bubbles in the swirling flow. In addition, since the water introduced into the fine bubble generator 240 contains a large amount of metal ions, when the water approaches the negative pressure axis, a large amount of metal ions are released from the water, and a higher concentration of metal ions. Fine bubbles containing ions are generated. In this way, by generating fine bubbles in pressurized water containing metal ions (copper ions and zinc ions), the concentration of metal ions in water can be increased in a short time. ) Can significantly improve the bactericidal action. The water having such a sterilizing action is sent to a desired apparatus or place through a drain pipe 270 by a drain pump 272. Moreover, by adjusting the pressure of the gas taken in from the gas supply pipe 244, the size of the bubbles can be adjusted, and bubbles of a desired size such as nanobubbles and microbubbles can be sent out to a desired water depth.

  As described above, the apparatus shown in FIG. 12 can be used not only as a water quality improvement apparatus for improving the quality of water of a water supply source, but also as a metal ion water generation apparatus that generates metal ion water containing metal ions having a bactericidal action. Can also be used. For example, a spout for ejecting water in the form of a mist is attached to the tip of the drain pipe 270, and metal ion water is sprayed from this spout to be used for hydroponics, as an alternative pesticide or inorganic pesticide, or for livestock transmission It can be used to prevent disease and deodorize barns. In this case, since gas is dissolved at a high concentration in the water supplied to the ejection port, mist containing bubbles containing metal ions is ejected from the ejection port by decompression foaming. Since this mist contains a high concentration of metal ions, it can be used to sterilize pathogenic bacteria such as Escherichia coli and Legionella, and plant stems and leaves.

  By the way, normally, when bubbles are generated in water, as shown in FIG. 13A, a location 281 where water is collected between the bubbles 280 is generated. Metal ions are generated using the above-described metal ion water generator. When microbubbles are generated in the water that is contained, the surface of the microbubbles becomes a thin film as shown in FIG. 13B, and the water and the gas can be efficiently contacted.

  Here, since the fine bubble generator 240 has a large flow resistance and an effect of keeping the outflow amount constant, the pressure inside the bubble generation unit is kept constant. For this reason, it is not necessary to provide a regulating valve or the like.

  Moreover, by decompressing the inside of the water storage tank 260, gas can be continuously released from the surface of the fine bubbles to the outside, and a decompressed space can be maintained inside the water storage tank 260. Further, a gas recovery device can be connected to the pressure control pipe 268 to recover the gas.

  In addition, since bubbles containing a large amount of metal ions can be generated at the bottom of the bubble generation unit, ionization in the fine bubble generator 240 can be activated. Thereby, the fluid resistance at the time of injecting to-be-processed water from the ejection pipe 246 to a bubble generation part can be made small, and the bubble containing a lot of metal ions can be generated efficiently.

  Bubbles containing a large amount of metal ions generated at the bottom of the bubble generation unit are combined and expanded while rising on the inner peripheral wall of the bubble generation unit by buoyancy. As a result, the bubble portion and the liquid portion are separated vertically by gravity and buoyancy, and bubbles containing metal ions can be generated one after another.

  As shown in FIG. 12, a water level sensor 274 such as a float may be provided inside the water storage tank 260. Such a water level sensor 274 detects the water level in the water storage tank 260 and adjusts the amount of air sucked into the fine bubble generator 240 according to the water level. For example, when the water level rises, the electromagnetic valve 245 is controlled to increase the amount of air sucked into the fine bubble generator 240 and increase the amount of air dissolved in the liquid in the water storage tank 260. When the water level drops, the electromagnetic valve 245 is controlled to reduce the amount of air sucked into the fine bubble generator 240 and reduce the amount of air dissolved in the water in the water storage tank 260. By such control, a desired water level can be maintained inside the water storage tank 260, and metal ions that have not been dissolved in the fine bubbles are not discharged from the discharge valve on the downstream side, and the metal ions are wasted. And can be dissolved in fine bubbles. Moreover, since the pressure inside the water storage tank 260 can be stabilized, the apparatus can be stably operated continuously.

  Moreover, in this example, since the pressure inside the water storage tank 260 can be controlled by the pressure control pump 266, the concentration of metal ions in water can be adjusted. Therefore, it becomes easy to adjust the concentration of metal ions in water according to the application.

  FIG. 14 shows another simple example of the water quality improvement apparatus according to the third embodiment described above. This device can also be used as a metal ion water generating device in the same manner as the device shown in FIG. As shown in FIG. 14, a filling container 283 is immersed in water in a water storage tank 282, and two fine bubble generators 240 are accommodated in the inside of the filling container 283. An opening 283 a is formed in the upper part of the filling container 283. The filling container 283 is filled with metal fibers 284 made of an alloy of copper and zinc or simple copper and having a number of tooth-like projections formed on the surface so as to surround the fine bubble generator 240.

  The gas supply pipe 244 is bifurcated and connected to each fine bubble generator 240, and the ejection pipe 246 is also bifurcated and connected to each fine bubble generator 240. A water supply pump 285 that supplies water in the water storage tank 282 to the bubble generation unit of the fine bubble generator 240 is connected to the ejection pipe 246.

  When the water in the water storage tank 282 is supplied to the fine bubble generator 240 by driving the water supply pump 285, a swirl flow is generated in the bubble generation unit 242 of the fine bubble generator 240, thereby sucking air from the gas supply pipe 244. The air is taken in as fine bubbles in the swirling flow. Water containing fine bubbles is discharged from the upper and lower nozzles 250 and 252 of the fine bubble generator 240 into the filling container 283 and comes into contact with the metal fibers 284. Thereby, metal ions (copper ions and zinc ions) are eluted from the metal fibers 284, and water containing a large amount of metal ions and fine bubbles is returned to the water storage tank 282 from the opening 283a of the filling container 283. In this way, high-concentration metal ion water is generated in the water storage tank 282.

  Normally, when metal fibers made of an alloy of copper and zinc are immersed in water at a certain weight ratio for about 8 hours, the copper ion concentration exceeds 0.06 mg / L, which is a standard for sterilization efficacy. As shown in FIG. 4, the water in the water storage tank 282 is supplied to the fine bubble generator 240 by the water supply pump 285, and the water containing the fine bubbles is brought into contact with the metal fibers 284 inside the filling container 283, so that Ionization can be activated. Therefore, according to the apparatus shown in FIG. 14, metal ions can be eluted in water in a short time, and the metal ion concentration obtained when the metal fiber is allowed to stand in water for 24 hours can be obtained in about 2 hours. The desired metal ion concentration can be obtained at about 12 times the speed.

  FIG. 15 is a schematic view showing a water quality improvement apparatus according to the fourth embodiment of the present invention. This device can also be used as a metal ion water generating device in the same manner as the device shown in FIG. As shown in FIG. 15, a filling container 283 is immersed in the water of a water storage tank 282, and inside this filling container 283, a large number of tooth-like projections are formed on the surface made of an alloy of copper and zinc or a copper simple substance. The filled metal fibers 284 are filled. An opening 283 a is formed in the upper part of the filling container 283. A water supply pipe 247 is connected to the lower part of the filling container 283, and a water supply pump 286 for supplying water in the water storage tank 282 to the metal fibers 284 in the filling container 283 is connected to the water supply pipe 247. Yes.

  When the water in the water storage tank 282 is supplied into the filling container 283 by driving the water supply pump 286, the metal fibers 284 come into contact with the metal fibers 284, and metal ions (copper ions and zinc ions) are eluted. Water containing a large amount of this metal ion is returned to the water storage tank 282 from the opening 283a of the filling container 283. In this way, high-concentration metal ion water is generated in the water storage tank 282.

  FIG. 16 is a perspective view showing a cooling tower 314 including a water quality improvement apparatus according to the fifth embodiment of the present invention, and FIG. 17 is a perspective view showing a part of the cooling tower 314 of FIG. In FIG. 16, a part thereof is cut away for easy understanding. As shown in FIG. 16, the cooling tower 314 includes a fan 320 provided at an upper portion, an upper water tank 322 for storing cooling water, a heat exchanger 323 installed below the upper water tank 322, and an upper water tank 322. A filler 324 installed below, an internal pipe 325, a lower water tank 326 for storing cooled cooling water, a dropped water tank 327 provided in the lower water tank 326, and a pump 328 connected to the dropped water tank 327 And a water quality improvement device 330 installed inside the dropped water tank 327.

  FIG. 18 is an exploded front view showing a part of the water quality improvement device 330. As shown in FIG. 18, the water quality improvement device 330 includes an upper housing 332 having a metal mesh structure, a lower housing 334 having a metal mesh structure, and a leg 336 attached to the lower housing 334. The above-described metal fiber (not shown) is accommodated in the inside of a substantially rectangular parallelepiped filling container formed by the upper housing 332 and the lower housing 334.

  FIG. 19 is a plan view showing the upper housing 332. As shown in FIG. 19, extending portions 332 a extending in the horizontal direction are formed at both ends of the upper housing 332. Two through holes 332b are formed in the extending portion 332a of the upper housing 332, respectively. Similarly, extending portions 334a extending in the horizontal direction are formed at both ends of the lower housing 334, and two through holes (not shown) are formed in each of the extending portions 334a. The upper housing 332 and the lower housing 334 are connected by inserting a bolt 337 into these through holes and fixing the bolt 337 with a nut 338 (see FIG. 18). Note that a handle 332 c for facilitating the carrying of the water quality improvement device 330 is provided on the extending portion 332 a of the upper housing 332.

  As shown in FIG. 18, a copper plate 340 is attached to the inner peripheral side of the upper portion of the lower housing 334. The copper plate 340 has a role of enhancing the sterilizing effect by the copper ions eluted from the metal fibers described above and preventing the metal fibers from coming out between the upper housing 332 and the lower housing 334. Although not shown, a copper mesh may be laid on the bottom surface of the lower housing 334 in order to enhance the sterilizing effect by the copper ions.

  FIG. 20 is a schematic diagram showing a power plant cooling water cooling system including a water quality improvement device 430 according to a sixth embodiment of the present invention. The power plant cooling water cooling system in the present embodiment cools cooling water used in nuclear power plants and thermal power plants with seawater, and as shown in FIG. 20, cooling water piping 410A through which the cooling water is circulated. , 410B, coolers 412A, 412B attached to the respective cooling water pipes 410A, 410B, pumps 416A, 416B provided in the intake pit 414 for storing seawater 413, and seawater pumped by the pumps 416A, 416B Water intake pipes 418A and 418B for introducing 413 to the coolers 412A and 412B, and water discharge pipes 422A and 422B for sending the seawater 413 used for cooling the cooling water in the coolers 412A and 412B to the water discharge pit 420 are provided. .

  In the present embodiment, water quality improvement devices 430 are provided in the middle of intake pipes 418A and 418B extending from the intake pit 414 to the coolers 412A and 412B, respectively. FIG. 21 is a schematic diagram showing the configuration of the water quality improvement device 430. As shown in FIG. 21, the water quality improvement device 430 includes a branch pipe 431 that branches the intake pipe 418 </ b> A into four, four chambers 432 connected to the branch pipe 431, and branch pipes connected to the four chambers 432. 433.

  FIG. 22 is a schematic view showing one chamber 432, and FIG. 23 is a schematic view taken along the line XXIII-XXIII in FIG. As shown in FIGS. 22 and 23, a plurality of cylindrical filling containers 434 are arranged in the chamber 432 at a predetermined interval. A large number of water passage holes 435 are formed in these cylindrical filling containers 434. Each cylindrical filling container 434 is filled with a metal fiber made of a copper-zinc alloy or copper alone and having a number of tooth-like projections formed on the surface thereof, and copper ions and zinc ions are contained inside the chamber 432. It elutes in the water passing through.

  Since seawater is used for cooling the cooling water used in nuclear power plants and thermal power plants, there is a problem that marine organisms such as mussels and lobsters adhere to the cooling system. Conventionally, chemicals such as chlorine have been used to deal with this problem. However, chemicals such as chlorine cause corrosion in the piping and cooler body, and environmental problems due to increased chlorine concentration in the wastewater. Or On the other hand, if the water quality improvement device 430 is provided in the intake pipes 418A and 418B as in this embodiment, copper ions and zinc eluted from the metal fibers in the plurality of cylindrical filling containers 434 of the water quality improvement device 430. By the redox action of ions, marine organisms such as blue mussels and shrimp mussels adhering to the inside of the coolers 412A and 412B, the intake pipes 418A and 418B, and the discharge pipes 422A and 422B can be attenuated. Moreover, the plankton generated by the spawning of these marine organisms can be killed, and the reproduction of these marine organisms can be prevented.

  In order to examine the effect of the above-described metal fiber, a metal fiber made of an alloy of copper and zinc was immersed in a test solution prepared so as to have an arsenic concentration of 0.050 mg / L and pH 6.0, and the test was performed under an environment of 23 ° C. Let stand for hours. 100 mL of test solution per 1.0 g of metal fiber was used. As a result, the arsenic concentration was 0.013 mg / L, which was reduced to about 26% before the metal fibers were immersed. As can be seen from this result, it was confirmed that arsenic and its compounds were effectively removed by immersing the metal fiber.

  Moreover, the residual chlorine density | concentration when the metal fiber which consists of an alloy of copper and zinc was immersed in the tap water prepared so that a residual chlorine density | concentration might be 1.2 mg / L and it left still for 24 hours was measured. 5000 mL of tap water per 3.0 g of metal fiber was used. The results are shown in Table 1.

  As can be seen from Table 1, it was confirmed that residual chlorine can be effectively removed simply by immersing the metal fiber.

  Further, an experiment was conducted to examine the effect of the metal ion water generator (water quality improvement device) shown in FIG. A filling container 283 filled with 500 g of metal fibers 284 was installed in a 100 L water storage tank 282, and a 100 V / 250 W water supply pump 286 was driven to circulate the water in the water storage tank 282. The result at that time is shown in FIG.

  As shown in FIG. 24, it is possible to obtain the metal ion concentration obtained when the normal metal fiber is allowed to stand in water for 24 hours in about 1 hour, and to obtain the copper ion concentration at a rate of about 24 times or more. confirmed.

  The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments, and it goes without saying that the present invention may be implemented in various forms within the scope of the technical idea. In the above-described embodiment, the example in which the water quality improvement device is applied to the cooling water in the cooling tower has been described. However, the present invention is not limited to this example, and is applied to all kinds of water that need to be improved in water quality. be able to.

  For example, the water quality improvement apparatus according to the present invention can be applied to water used for hydroponic cultivation, alternative agricultural chemicals, and water used as inorganic agricultural chemicals. Water whose water quality has been improved by the water quality improving apparatus according to the present invention can be used in place of agricultural chemicals. In this case, scab, black spot, spotted leaf disease, white leaf rot, downy mildew, rust, perforation, cancer, flower rot, plague, soft rot, black blight, It can prevent rot, spring rot, spotted bacterial disease, black rot, red burning, furan disease, anthracnose and the like, and can avoid insects such as aphids and licks.

  In addition, for example, water whose water quality has been improved by the water quality improving apparatus according to the present invention may be misted and sprayed on a livestock barn. In this case, it is possible to prevent deodorization in the barn, infections such as foot-and-mouth disease and new influenza. Further, the water quality improving apparatus according to the present invention may be applied to aquaculture water to fish fish. In this case, viruses and vibrio harmful to fish and shellfish by continuous farming can be controlled, and eromonal diseases such as rainbow trout, yamame trout, charr, amago, cherry salmon, silver salmon, rainbow trout, eel, etc. ), Discus disease, angelfish disease, columnarism (soil rot and mouth rot), mold, illness, and herpes simplex.

  Further, the water quality improvement apparatus according to the present invention may be applied to circulating water in a circulation system that pumps up water from a pond or swamp and returns it to the pond or swamp again. In this case, it is possible to disassemble and remove the algae and blue-green algae that have propagated in the ponds and swamps.

  Moreover, you may install the water quality improvement apparatus which concerns on this invention in the tank in the cold / hot water server for drinks. Conventionally, UV lamps have been used to sterilize tanks in cold / hot water servers, but if the server is not used for a certain period of time, slime, Escherichia coli, Legionella bacteria, etc. will be generated inside the pipes and filters, resulting in off-flavors and slime. Cause. It takes a lot of time and money to get rid of this. On the other hand, if the water quality improvement apparatus according to the present invention is installed in a tank of a cold / hot water server, slime, Escherichia coli, Legionella, and the like can be sterilized easily and inexpensively. Residual chlorine can also be decomposed. Further, silica and scale accumulation can be suppressed, and the piping in the server can be prevented from being clogged. Moreover, since copper and zinc elute from metal fiber although it is trace amount, the mineral of copper and zinc which are essential for a human body can be ingested by drinking the water of this cold / hot water server.

  Moreover, you may install the water quality improvement apparatus which concerns on this invention in a bathtub. For example, as shown in FIG. 25, inside a wooden box-shaped filling container 502 having a large number of water passage holes 500 formed on its side surface, a large number of tooth-like protrusions made of copper and zinc alloy or copper alone are formed on the surface. The formed metal fiber is filled. Such a box-shaped filling container 502 may be submerged in a bathtub as a water quality improvement device. By using such a water quality improvement apparatus, even if it uses for 20 days, for example, without replacing the water in a bathtub, E. coli will not generate | occur | produce and a slime will not arise in the inner wall of a bathtub. Moreover, residual chlorine contained in tap water can be removed, and the generation of malodor can be prevented. Furthermore, since the organic matter contained in the water in the bathtub can be coagulated and precipitated, the transparency of water can be increased.

  Moreover, the water quality improvement apparatus according to the present invention can be installed in a drainage facility such as a hot spring containing arsenic, and the arsenic component can be easily removed at low cost. Moreover, you may install the water quality improvement apparatus which concerns on this invention in the system | strain of the circulating water used for a hot spring. In this case, sterilization of circulating water Legionella bacteria or Escherichia coli can be performed. Moreover, since copper and zinc are eluted from metal fibers in a small amount, copper and zinc minerals have a good effect on the skin of bathers.

  Furthermore, you may install the water quality improvement apparatus which concerns on this invention in the tank in a humidifier. In this case, Legionella, Escherichia coli, mold, etc. in the humidifier tank can be sterilized. Moreover, since the water whose water quality has been improved by the water quality improving apparatus according to the present invention is sprayed indoors, infections such as new influenza, MRSA, multidrug-resistant bacteria, and the like can be prevented.

  Moreover, you may install the water quality improvement apparatus which concerns on this invention in the washing tank of a toilet. In this case, generation | occurrence | production of mold | fungi etc. can be prevented in the washing | cleaning tank of a toilet, and the dirt of a toilet bowl can be suppressed.

  Moreover, you may install the water quality improvement apparatus which concerns on this invention in the washing tub of a washing machine. In this case, residual chlorine contained in tap water can be removed, and mold and coliforms in the washing tub can be sterilized. In addition, dirt on the laundry and detergent remaining on the laundry can be completely removed, and the amount of water used for rinsing can be reduced.

  Further, the water quality improvement apparatus according to the present invention may be applied to water containing heavy metals such as lead, mercury, cadmium, and arsenic. In this case, these heavy metals can be removed at low cost with simple equipment.

  In addition, the water quality improvement apparatus according to the present invention may be installed in a drinking water tank mounted on a ship to sterilize slime, E. coli, or the like. Furthermore, you may install the water quality improvement apparatus which concerns on this invention in the ballast tank mounted in a ship. When the collected seawater is used as ballast water, the impact on the ecosystem can be suppressed even if the ballast water is discharged in other areas by sterilizing the ballast water with the water quality improvement apparatus according to the present invention.

  Moreover, you may install the water quality improvement apparatus which concerns on this invention in a water storage tank or an elevated water tank. In this case, E. coli etc. in the water storage tank or elevated water tank can be sterilized. Moreover, accumulation of silica and scale can be suppressed, and piping can be prevented from being clogged. Moreover, it is possible to prevent red rust from occurring in the pipe.

  Moreover, you may use the water obtained by the water quality improvement method which concerns on this invention for ice making. Ordinary ice used for storing and transporting fresh products such as fish begins to grow bacteria when it starts to melt, but ice made using water obtained by the water quality improvement method according to the present invention melts. However, the bactericidal effect persists and does not discolor or smell.

DESCRIPTION OF SYMBOLS 10 Air conditioner 12 Heat exchanger 14 Cooling tower 16 Heat medium piping 18 Cooling water piping 20 Fan 22 Upper water tank 24 Filling material 26 Lower water tank 30 Water quality improvement apparatus 31 Water flow hole 32 Cylindrical part 33 Cap 34 Filling container 35 Metal fiber 35A Tooth Protrusion 130 Water quality improvement device 131A, 131B Hemisphere 132A, 132B Hemisphere portion 133A, 133B Flange portion 134 Hinge portion 135 Pin 136 Positioning hole 137 Lock portion 138 Holding portion 139 Hook portion 230 Water quality improvement device 240 Fine bubble generator 242 Bubble generation Portion 244 Gas supply pipe 245 Solenoid valve 246 Ejection pipe 247 Water supply pipe 248 Spherical filling container 250 Upper nozzle (opening)
252 Lower nozzle (opening)
260 Water storage tank 262 Water supply source 264 Water supply pump 266 Pressure control pump 272 Drain pump 268 Pressure control pipe 270 Drain pipe 282 Water tank 283 Filling vessel 284 Metal fiber 285 Water supply pump 286 Water supply pump 314 Cooling tower 320 Fan 322 Upper water tank 323 Heat exchanger 324 Filler 325 Internal pipe 326 Lower water tank 327 Dropped water tank 328 Pump 330 Water quality improvement device 332 Upper housing 334 Lower housing 430 Water quality improvement device 410A, 410B Cooling water piping 412A, 412B Cooler 414 Intake pit 416A, 416B Pump 418A, 418B Water intake pipe 420 Water discharge pit 422A, 422B Water discharge pipe 430 Water quality improvement device 431, 433 Branch pipe 432 Chamber 434 Cylindrical filling container 435 Water flow hole 500 Water flow hole 02 Box-shaped packing container R _{U, R D} swirl flow S inner space W water

Claims (33)

A metal fiber made of an alloy of copper and zinc or copper, the surface of which is formed with a large number of tooth-like protrusions,
A filling container filled with the metal fibers, wherein a plurality of water passage holes are formed;
A water quality improvement device characterized by comprising: A fine bubble generator for generating fine bubbles in water that has passed through the inside of the filling container,
A bubble generating section having a streamlined internal space with low flow resistance, and an opening for discharging the water in the internal space to the outside;
An ejection pipe for generating a swirling flow in the internal space by ejecting water from the outside in a tangential direction of the internal space of the bubble generating unit;
A gas supply pipe for supplying gas to the swirling flow generated in the internal space of the bubble generating unit;
The water quality improving apparatus according to claim 1, further comprising a fine bubble generator having a water vapor.   The water quality improvement apparatus according to claim 2, wherein the filling container is accommodated in an internal space of a bubble generation unit of the fine bubble generator.   The water quality improvement apparatus according to claim 2, wherein the filling container is disposed inside an ejection pipe of the fine bubble generator.   The water quality improvement device according to claim 1 or 2, wherein the filling container includes a cylindrical portion in which the water passage hole is formed. The filling container is
A pair of hemispheres that form a spherical body by forming the water passage holes and being combined with each other;
A hinge portion that rotatably couples the pair of hemispheres;
A locking portion that locks the combined state of the pair of hemispheres;
The water quality improving apparatus according to claim 1 or 2, further comprising: Water is introduced into the filling container from a number of water holes,
A metal fiber made of copper and zinc alloy or copper filled in the filling container, wherein the water is brought into contact with the metal fiber having a number of tooth-like projections formed on the surface,
A method for improving water quality, wherein the water quality is improved by a redox action of metal ions eluted from the metal fiber.   The water quality improving method according to claim 7, wherein the water is circulating water circulating in a predetermined system.   The water quality improvement method according to claim 7, wherein the water is cooling water used in a cooling tower.   The water quality improvement method according to claim 7, wherein the water is seawater that cools cooling water used in a power plant.   The water quality improvement method according to claim 7, wherein the water is water used for hydroponics, water used as an alternative pesticide or an inorganic pesticide.   The water quality improvement method according to claim 7, wherein the water is water used for preventing infectious diseases of livestock or deodorizing a storage.   The water quality improvement method according to claim 7, wherein the water is water for fish farming.   The water quality improvement method according to claim 7, wherein the water is water in a drinking water server.   The water quality improvement method according to claim 7, wherein the water is water of a bathtub.   The water quality improvement method according to claim 7, wherein the water is water containing heavy metal.   The water quality improvement method according to claim 7, wherein the water is water in a humidifier.   The water quality improvement method according to claim 7, wherein the water is water in a toilet tank.   The water quality improvement method according to claim 7, wherein the water is water used for ice making.   The water quality improvement method according to claim 7, wherein the water is water containing blue sea lions. A water tank,
A metal fiber made of an alloy of copper and zinc or copper, the surface of which is formed with a large number of tooth-like protrusions,
A filling container filled with the metal fibers;
A fine bubble generator for generating fine bubbles in water in the water tank,
A bubble generating section having a streamlined internal space with low flow resistance, and an opening for discharging the water in the internal space to the outside;
An ejection pipe for ejecting water that has passed through the inside of the filling container in a tangential direction of the internal space of the bubble generating unit, and generating a swirling flow in the internal space;
A gas supply pipe for supplying gas to the swirling flow generated in the internal space of the bubble generating unit;
A microbubble generator having
A metal ion water generator characterized by comprising: A pressure control pipe connected to the sealed water reservoir;
A pressure control pump for adjusting the pressure in the water storage tank via the pressure control pipe;
The metal ion water generator according to claim 19, further comprising: A water tank,
A metal fiber made of an alloy of copper and zinc or copper, the surface of which is formed with a large number of tooth-like protrusions,
A fine bubble generator for generating fine bubbles in water in the water tank,
A bubble generating section having a streamlined internal space with low flow resistance, and an opening for discharging the water in the internal space to the outside;
An ejection pipe for ejecting water in a tangential direction of the internal space of the bubble generating section and generating a swirling flow in the internal space;
A gas supply pipe for supplying gas to the swirling flow generated in the internal space of the bubble generating unit;
A microbubble generator having
A filling container immersed in the water tank, containing the fine bubble generator and filled with the metal fiber around the fine bubble generator;
A water supply pump for supplying water inside the water reservoir to the ejection pipe of the fine bubble generator;
A metal ion water generator characterized by comprising: A water tank,
A metal fiber made of an alloy of copper and zinc or copper, the surface of which is formed with a large number of tooth-like protrusions,
A filling container immersed in the water tank, having an opening at the top, and a filling container filled with the metal fiber inside;
A water supply pump for supplying and circulating water inside the water reservoir into the filling container;
A metal ion water generator characterized by comprising:   25. The metal ion water generating apparatus according to any one of claims 21 to 24, wherein the water is circulating water circulating in a predetermined system.   The said water is a cooling water used in a cooling tower, The metal ion water production | generation apparatus as described in any one of Claims 21-24 characterized by the above-mentioned.   The said water is seawater which cools the cooling water used in a power station, The metal ion water production | generation apparatus as described in any one of Claim 21 to 24 characterized by the above-mentioned.   25. The metal ion water generating apparatus according to any one of claims 21 to 24, wherein the water is water used for hydroponics, water used as an alternative pesticide, or an inorganic pesticide.   25. The metal ion water generating device according to any one of claims 21 to 24, wherein the water is water used for preventing infectious diseases of livestock or deodorizing a storage.   The said water is water for fish culture, The metal ion water production | generation apparatus as described in any one of Claims 21-24 characterized by the above-mentioned.   The said water is water containing a heavy metal, The metal ion water production | generation apparatus as described in any one of Claims 21-24 characterized by the above-mentioned.   25. The metal ion water generating device according to any one of claims 21 to 24, wherein the water is water used for ice making. 25. The metal ion water generating device according to any one of claims 21 to 24, wherein the water is water containing a giant sea bream.

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