WO2002068345A1

WO2002068345A1 - Oxygen-enriched water purifying plant

Info

Publication number: WO2002068345A1
Application number: PCT/JP2002/001138
Authority: WO
Inventors: Toshiro Urabe
Original assignee: Fukuda, Hatsuo
Priority date: 2001-02-26
Filing date: 2002-02-12
Publication date: 2002-09-06
Also published as: JP2002248490A

Abstract

An oxygen-enriched water purifying plant (1) having rather reduced size and weight, transportable easily, and capable of developing excellent water purification function and an oxygen-enriching function with less volume of water, comprising a filtering tank (7) for purifying the water fed from the outside, a water storage tank (3) capable of storing the purified water (W) passed through the filtering tank (7), a pressurized container (8) disposed in the storage tank (3) with the lower face opening part (8a) thereof facing downward, an air bubble generator (10) disposed between the bottom face of the water storage tank (3) and the pressurized container (8), an air pump (12) for supplying air to the air bubble generator (10), and a feedwater pump (11) for feeding the purified water (W) oxygen-enriched in the water storage tank (3).

Description

Description Oxygen-enriched water purification equipment Technical field

The present invention purifies the water containing fish and shellfish when storing, displaying or transporting fish and shellfish such as fish, squid, octopus, shellfish, shrimp, ryuji, sea urchin and sea cucumber alive. The present invention relates to an oxygen-enriched water purification device for increasing the amount of dissolved oxygen. Background art

In recent years, restaurants and restaurants that cook and provide seafood have been equipped with aquariums and fish tanks for storing and displaying seafood alive so that it can provide fresh and delicious fish dishes. is increasing. Since it is necessary to deliver seafood alive to such restaurants and restaurants, various technologies have been developed to prevent damage to the seafood during transportation and maintain its freshness. . In addition, an increasing number of people go to the production area from the recent gourmet boom to purchase live seafood and take it alive to their homes or have them delivered to homes by courier.

In order to keep fish and shellfish fresh during transportation or display, prevent water quality deterioration due to leftover food and excrement, and dissolve enough oxygen in the water in which fish and shellfish are contained to keep dissolved oxygen constant. Must be maintained above level. A typical method for increasing dissolved oxygen in water is to put a bubble generator into a water tank containing fish and shellfish and supply air to the bubble generator from an air pump or the like to blow out fine bubbles into the water. It is a target.

As a device for increasing the amount of dissolved oxygen in water, a U-tube type oxygen dissolving device as shown in Fig. 8 is also used. The oxygen dissolving device 90 introduces water from the water inlet pipe 91 on the left side of the drawing into the water passage container 93, and supplies the air supplied from the air pump 95 to the air disposed in the water passage container 93. After blowing out into the water from the blow-off device 96, the water mixed with air bubbles 9 7 is U-turned in the water flow container 93 divided by the partition wall 92, and then discharged from the drain pipe 94 on the right side of the drawing. is there. The flow rate of water in the water passage container 9 3 Above the natural rise rate of 97, the bubbles 97 move with the water stream, which can promote the dissolution of oxygen.

Other techniques for dissolving oxygen in water containing fish and shellfish include, for example, a method of adjusting the amount of dissolved gas in fish and shellfish breeding water disclosed in Japanese Patent Application Laid-Open No. Hei 9-33735. is there.

The oxygen concentration in air under atmospheric pressure conditions is 20.9%, and the oxygen partial pressure that determines the saturated dissolved oxygen concentration in water is determined by this atmospheric pressure. To increase the saturated dissolved oxygen concentration of the water in the tank, it is necessary to increase the water pressure in the tank. Since water pressure is directly related to water depth, it is possible to increase the concentration of saturated dissolved oxygen by placing water in a water tank as deep as possible and setting the bubble generator deep in the water to deepen the bubble generation position. However, deep water tanks have a large width and depth and a large volume, which leads to large equipment and cannot be easily adopted in small facilities.

In the case of the oxygen dissolving device 90 shown in FIG. 8, a sufficient amount of water is required to generate a constant water flow in the water passage container 93, and the water flows at a flow rate higher than the natural rising speed of the bubbles 97. Therefore, a relatively large pump is required, so it is not suitable for small-sized water tanks and the like, and it is not easy to carry.

Furthermore, for the method of adjusting the amount of dissolved gas in fish and shellfish breeding water disclosed in Japanese Patent Application Laid-open No. Hei 9-33735, complicated equipment consisting of many instruments and devices is required to implement this method. Since it is necessary, it is difficult to adopt it in small-scale facilities, and it is also difficult to move the oxygen enrichment device separately from the fish and shellfish storage tank.

The problem to be solved by the present invention is to provide an oxygen-enriched water purification device that is relatively small and lightweight, is easy to carry, and exhibits excellent water purification and oxygen enrichment functions even with a small amount of water. It is in. Disclosure of the invention

The oxygen-enriched water purification device of the present invention comprises: a filtration unit for purifying water supplied from the outside; a water storage tank capable of storing purified water that has passed through the filtration unit; Pressurized container, a bubble generator arranged between the bottom of the water tank and the pressurized container, an air pump for supplying air to the bubble generator, and oxygen-enriched purified water in the water tank. A water supply pump for supplying the water to the outside.

With this configuration, the water supplied from the outside passes through the filtering means and becomes purified water, which is accumulated around the pressurized container in the water storage tank, and the water level is higher than the water level in the pressurized container. As the pressure increases, the pressure inside the pressurized container becomes higher than the atmospheric pressure, and when the bubbles generated from the bubble generator rise toward the high-pressure pressurized container, a larger amount of oxygen is dissolved in the purified water than under the atmospheric pressure. However, even if the depth of the water storage tank is relatively shallow, sufficient oxygen-enriched purified water can be obtained, and excellent water purification and oxygen-enrichment functions can be exhibited even with a small amount of water.

Also, since it is not necessary to increase the capacity of the water storage tank, it is relatively small and lightweight, and the water contained in the fish and shellfish storage facility is sent to the filtration means, and the oxygen-enriched purified water is sent to the water pump. It can be used simply by returning it to the seafood storage facility, so it is easy to use and can be easily separated from the seafood storage facility and carried. If a battery is provided as a power source for operating the air pump and water supply pump, it can be used in places without power supply facilities, further improving portability and convenience.

By providing, as the filtration means, a filtration tank into which water supplied from the outside is allowed to fall, and a filtering material stacked in the filtration tank, water is efficiently purified by utilizing natural fall. be able to. Activated carbon, zeolite, oyster hulls, coral stone and the like are suitable as the filtering material.

By providing a through hole at a position higher than the opening on the lower surface of the pressurized container, it is possible to efficiently discharge bubbles generated in the pressurized container and purified water mixed with bubbles to the outside of the pressurized container. In addition to further promoting the enrichment of the purified water in the water storage tank with oxygen, oxygen can be supplied by sending air bubbles or purified water mixed with air bubbles to the filtration tank, so that the function of the terrier living in the filtration tank is improved. It has the effect of being activated and further improving the filtration function.

By providing an exhaust valve whose opening can be adjusted in the pressurized container, the opening of the exhaust valve is adjusted to increase or decrease the amount of air stored in the pressurized container, and to change the level of purified water in the pressurized container. Thus, the internal pressure in the pressurized container can be adjusted to an internal pressure suitable for use conditions, and the internal pressure can be easily adjusted at the start of use. Also, by setting the opening degree of the exhaust pulp according to the air supply amount of the air pump and the water supply amount of the water supply pump, the water level in the pressurized container and the water in the water storage tank can be adjusted. Since the position can be kept constant, a stable operating state can be obtained according to the actual operating conditions.

Further, the oxygen-enriched water purification device of the present invention is arranged in an airtight filter container for purifying water supplied from the outside, an airtight pressurized container communicating with the filter container, and the pressurized container. It has a bubble generator, an air pump for supplying air to the bubble generator, an airtight water supply container connected to the pressurized container, and a water supply pump provided in communication with the water supply container. .

With this configuration, water supplied from the outside passes through the filtration container, becomes purified water, is supplied into the pressurized container, and increases its internal pressure. Since large amounts of oxygen are dissolved in purified water under atmospheric pressure by generating bubbles from the atmosphere, purified oxygen-enriched purified water can be obtained without a large-capacity water tank with a deep water depth. At least it has excellent water purification and oxygen enrichment functions. In addition, since the filtration container, the pressure container and the water supply container are all airtight, they can perform their functions regardless of the posture of the container, and can overflow or leak water. It is easy to handle and transport, and can be used while transporting together with fish and shellfish storage facilities.

By providing an exhaust valve whose opening can be adjusted in the water supply container, by setting the opening of the exhaust valve according to the air supply amount of the air pump and the water supply amount of the water pump, the water is supplied from the water supply container to the outside. Since the flow rate of oxygen-enriched purified water can be kept constant, a stable operating state can be obtained according to the actual operating conditions, and the internal pressure of the pressurized container at the start of use can be easily adjusted.

Further, by forming the filtration container, the pressurized container and the water supply container with a flexible film material, it is possible to fold the small container when not in use, so that the storage space and the transportation space can be reduced. it can. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a cross-sectional view illustrating an oxygen-enriched water purification device according to a first embodiment. FIG. 2 is an explanatory diagram showing a procedure for starting use of the oxygen-enriched water purification apparatus of FIG. FIG. 3 is a perspective view showing a state of use of the oxygen-enriched water purification apparatus of FIG. FIG. 4 shows the oxygen richness of the second embodiment. It is a perspective view which shows a chemical water purification apparatus. FIG. 5 is a perspective view showing an oxygen-enriched water purification apparatus according to the third embodiment. 6 (a) is a perspective view showing a state of use of the oxygen-enriched water purification apparatus shown in FIG. 5, and FIG. 6 (b) is a sectional view thereof. FIG. 7 is a plan view showing a use state of the oxygen-enriched water purification apparatus shown in FIG. FIG. 8 is a sectional view showing a conventional oxygen dissolving apparatus. BEST MODE FOR CARRYING OUT THE INVENTION

FIG. 1 is a cross-sectional view showing an oxygen-enriched water purification device according to a first embodiment of the present invention, and FIG. 2 is an explanatory diagram showing a start operation of the oxygen-enriched water purification device shown in FIG.

In the oxygen-enriched water purification apparatus 1 of the present embodiment, a water storage tank 3 and an equipment storage section 4 are provided in a rectangular parallelepiped casing 2, and the water storage tank 3 is externally provided via a water suction pipe 17. A sprinkler 5 that blows out the water to be fed, a filter tank 7 in which a plurality of filter media 6 are stacked, and a box-shaped pressurized container 8 in which the lower opening 8a is arranged downward. The bubble generator 10 disposed between the bottom of the water storage tank 3 and the pressurized container 8 and the purified water W enriched with oxygen in the water storage tank 3 are sent to the outside via the water pipe 18. There is a water pump 11 to be supplied. An exhaust valve 9 whose opening can be adjusted is provided on the upper surface of the pressurized container 8, and a plurality of through holes 8 b are formed at a position higher than the lower opening 8 a of the pressurized container 8.

An air pump 12 for supplying air to the bubble generator 10 through an air supply pipe 15 and a storage battery 13 for operating the air pump 12 and the water supply pump 11 are arranged in the equipment storage section 4. An operation panel 14 on which switches for turning on and off the air pump 12 and the water supply pump 11 and the like are arranged on the upper surface of the device storage section 4. A water passage panel 16 having a plurality of through-holes is attached to the opening on the lower surface of the filtration tank 7, and the filter media 6 is stored in a stacked state on the water passage panel 16. The water passage panel 16 is located at a position away from the bottom of the water storage tank 3 and at the same height as the lower opening 8 a of the pressurized container 8. In order to enhance the filtration function, a filter 6a, which has a function to remove impurities such as dust, is placed at the top of the filter material 6, and from the bottom, activated carbon 6b, which has an excellent ammonia adsorption function, Zeolite G 6c, coral stone 6d, and oyster shell 6e.

Here, how to use the oxygen-enriched water purification device 1 will be described with reference to FIG. start to use In this case, as shown in Fig. 2 (a), water supplied from an external fish storage facility via a water absorption pipe 17 When the water is blown out, the purified water W filtered by the filtering medium 6 while falling in the filtration tank 7 passes through the water flow panel 16 and accumulates in the water storage tank 3. At this time, the air pump 12 and the water pump 11 are not operated, the exhaust valve 9 of the pressurized container 8 is opened, and the pressurized container 8 is filled with the purified water W.

When the water tank 3 and the pressurized container 8 are filled with the purified water W, close the exhaust valve 9 and operate the air pump 12 to blow air bubbles from the air bubble generator 10 as shown in Fig. 2 (b). When this is done, the water level S2 of the purified water W in the pressurized container 8 gradually decreases due to the air pressure that the air bubbles pop and accumulates in the pressurized container 8, so that the purified water W does not overflow from the water storage tank 3. As described above, the water pump 11 is operated to send the purified water W to the fish storage facility via the water pipe 18.

As shown in FIG. 2 (c), when the water level S2 in the pressurized container 8 reaches the position of the through hole 8b, the open / close valve 19 of the water intake pipe 17 and the open / close valve 20 of the water supply pipe 18 are turned on. By adjusting the amount of water supplied from the fish and shellfish storage facility and the amount of purified water W supplied to the fish and shellfish storage facility, the water level S2 in the pressurized container 8 becomes the through hole 8b. So that it is kept close by.

In such a state, the water supplied from the outside passes through the filtration tank 7 to become purified water W and accumulates in the water storage tank 3 around the pressurized container 8, and the water level S1 is increased. Since the internal pressure of the pressurized container 8 becomes higher than the atmospheric pressure when the water level in the container 8 becomes higher than the water level S2, the bubbles generated from the bubble generator 10 rise toward the inside of the pressurized container 8 having a high pressure. At this time, a larger amount of oxygen is dissolved in the purified water W than at atmospheric pressure. Therefore, even if the depth of the water storage tank 3 is relatively shallow, purified water W sufficiently enriched in oxygen can be obtained, and excellent water purification and oxygen enrichment functions can be exhibited even when the amount of water is small. By operating the oxygen-enriched water purification device 1 while maintaining the state shown in FIG. 2 (c), water in the fish and shellfish storage facility can be continuously purified and oxygen-enriched.

In addition, if the opening of the exhaust valve 9 is set according to the amount of water supplied from the outside to the filtration tank 7, the amount of air supplied by the air pump 12, and the amount of water supplied by the water pump 11, the water in the water tank 3 will be Level S 1 and the water level S 2 in the pressurized vessel 8 are constant, so it matches the actual operating conditions A stable operating state is obtained.

In the case of the oxygen-enriched water purifier 1, it is not necessary to increase the capacity of the water tank 3 to secure the water depth, so the size is 25 cm long, 45 cm wide, 25 cm high, and weighs 1 It is relatively small and light, about 5 kg, and feeds the water contained in the fish and shellfish storage facility to the filtration tank 7 via the water suction pipe 17, and sends the oxygen-enriched purified water W to the water pipe 1 It can be used simply by returning it to the seafood storage facility via 8, so it is easy to use and can be separated from the seafood storage facility and easily carried. In addition, since the storage battery 13 is provided as a power supply for operating the air pump 12 and the water supply pump 11, it can be used in places without power supply facilities, and is excellent in portability and convenience.

Further, since a plurality of through holes 8b are provided at a position higher than the lower opening 8a of the pressurized container 8, air bubbles generated in the pressurized container 8 and purified water W containing bubbles are supplied to the pressurized container 8 Not only can efficiently discharge the purified water W in the storage tank 3 but also promote the enrichment of oxygen in the purified water W in the water storage tank 3, and send the purified water W containing air bubbles and bubbles into the filtration tank 7. Thus, oxygen can be supplied to the bacteria living in the filtration tank 7, so that the activity of the bacteria is activated and the filtration function is further improved.

Furthermore, since the pressurized container 8 is provided with an exhaust valve 9 whose opening can be adjusted, the exhaust valve 9 is opened and closed to increase or decrease the amount of air stored in the pressurized container 8 so that the purified water in the pressurized container 8 is increased. By changing the water level S2 of W, the internal pressure of the pressurized container 8 can be adjusted to a state suitable for use conditions, and the internal pressure at the start of use can be easily adjusted.

Next, the use state of the oxygen-enriched water purification device 1 will be described with reference to FIG. As shown in Fig. 3, live squid C and seawater SW are stored in a fish and shellfish storage tube 21 made of a non-permeable transparent synthetic resin material, and a drainage pipe 2 is provided in the fish and shellfish storage tube 21. 4 is connected to the water absorption pipe 17 connected to the oxygen-enriched water purifier 1 via the branching device 26, and the water absorption tube 23 is also connected to the oxygen-enriching device 1 via the branching device 25. It is connected to a water pipe 18.

When the oxygen-enriched water purifier 1 is operated in such a state, the seawater SW in the seafood storage tube 21 is taken into the oxygen-enriched water purifier 1 via the drain pipe 24 and the water absorption pipe 17. Then, the oxygen-enriched purified water can be sent to the fish / seafood storage tube 21 via the water supply pipe 18 and the water absorption pipe 23. In other words, oxygen-enriched purified water By using the device 1, the seawater in the seafood storage tube 21 is always purified and the required amount of oxygen is kept in a dissolved state, so the live squid C is stored, displayed, or transported in a fresh state. be able to. Actually, when squid C was transported in the state shown in Fig. 3, it was confirmed that squid C was still alive 24 hours later. The use of the oxygen-enriched water purifier 1 is not limited to this, so the oxygen-enriched water purifier 1 can also be used for fish and shellfish storage means other than the shellfish storage tube 21, providing excellent purification and oxygen-enriching effects. Is obtained. In addition, the oxygen-enriched water purification device 1 can be used not only in seawater but also in freshwater, and can be used without being affected by water temperature.

Next, an oxygen-enriched water purification apparatus 30 according to a second embodiment will be described with reference to FIG. The oxygen-enriched water purifier 30 is an airtight filter vessel 31 for purifying seawater SW sent from the seafood storage tube 21 via the drain pipe 24, and the filter vessel 31 and the flow path 3 An airtight pressurized container 3 3 communicating with the airtight container 2, a bubble generator 34 disposed in the pressurized container 33, an air pump 35 for supplying air to the bubble generator 34, and An airtight water supply container 37 communicating with the pressure vessel 33 via a flow path 36, a water supply pump 38 communicating with the water supply vessel 37 via a water supply pipe 18 and the like are provided.

The filtering container 3 1 is filled with a filtering material 39, and the exhaust pipe 4 1 communicating with the water supply container 3 7 is provided with an exhaust valve 40 whose opening can be adjusted. The air pump 3 5 and the water supply pump 3 8 A battery 42 is provided as a power source for operating the battery.

As shown in FIG. 4, the seafood storage tube 21 containing fish F and seawater SW and the oxygen-enriched water purification device 30 are connected via a drain pipe 24 and a water absorption pipe 23, and an air pump 3 is provided. 5 and the water pump 3 8 are activated, the seawater SW in the seafood storage tube 21 is fed to the filter vessel 31 and becomes purified water W by passing through the filter vessel 31 to become the pressurized vessel 3 Since it is fed into the pressurized container 3, the internal pressure of the pressurized container 3 3 increases. When bubbles are generated from the bubble generator 34 in the pressurized container 33 in such a high-pressure state, a larger amount of oxygen is dissolved in the purified water W than under atmospheric pressure, and oxygen is sufficiently enriched. The purified water W is sent to the water supply container 37, and is supplied by the water supply pump 38 through the water supply pipe 18 and the water absorption pipe 23 to the fish and shellfish storage tube 21.

As described above, by using the oxygen-enriched water purification apparatus 30, it is possible to obtain purified oxygen-enriched water W without a large-capacity water tank having a deep water depth and to reduce the amount of water. Since it exhibits excellent water purification and oxygen enrichment functions, it is possible to keep the fish F stored in the seafood storage tube 21 alive for a long time. In the oxygen-enriched water purifier 30, since the filtration container 31, the pressurized container 33, and the water supply container 37 are all airtight, regardless of the posture of these containers, It does not overflow and spills, has good handling and transportability, and is transported in an operating state connected to the seafood storage tube 21 containing fish F etc. Can also.

Since the water supply container 37 is provided with an exhaust valve 40 whose opening can be adjusted, the degree of opening of the exhaust pulp 40 is set according to the air supply amount of the air pump 35 and the water supply amount of the water supply pump 38. By doing so, the amount of oxygen-enriched purified water W sent from the water supply container 37 to the fish and shell-containing tube 21 can be kept constant. Therefore, a stable operating state can be obtained according to the actual operating condition, the internal pressure of the pressurized container 33 at the start of use is easily adjusted, and the handleability is excellent.

In addition, since the filtration container 31, the pressure container 33, and the water supply container 37 are integrally formed using a flexible transparent synthetic resin film material, they can be folded small when not in use. Yes, saving storage space and transportation space.

In the case where the seafood storage tube 21 containing the fish F and the seawater SW is connected to the oxygen-enriched water purification device 30 and transported while purifying the seawater SW and enriching the oxygen, Using the technology disclosed in Japanese Patent Application Laid-Open No. 11-31-218-688, the fish F was previously reduced in the motor function, and then stored in the seafood storage tube 21. Since the movement of the fish F in the storage tube 21 is suppressed, it is possible to maintain the living state for a longer time.

Next, an oxygen-enriched water purifying apparatus 50 according to a third embodiment will be described with reference to FIGS. The oxygen-enriched water purifier 50 is connected to an airtight filter vessel 51 for purifying seawater SW sent from two fish and shellfish storage tubes 21 via a drain pipe 24, and a filter vessel 51. An airtight pressurized container 53 connected through a passage 52; a bubble generator 54 disposed in the pressurized container 53; and an air pump 55 supplying air to the bubble generator 54. , An airtight water supply container 57 communicating with the pressurized container 53 via the flow path 56, two water pumps 58 communicating with the water container 57 via the water pipe 18 and the air pump 5 5 and 乾 A dry battery 59 for operating the water pump 58 is provided.

As with the oxygen-enriched water purifier 30 described above, the filter vessel 51 is filled with a filter medium 59, and the water supply vessel 57 is provided with an exhaust valve 60 whose opening can be adjusted. The pressurized container 53 and the water supply container 57 are integrally formed of a transparent synthetic resin material, and are also integrated with the air pump 55 and the dry cell 59.

As shown in FIG. 5, two fish and shellfish containing tubes 21 containing squid C and seawater SW and an oxygen-enriched water purifier 50 are respectively connected through drainage pipes 24 and water absorption pipes 23. When the switch 61 is turned on and the air pump 55 and the water pump 58 are operated, the seawater SW in the seafood storage tube 21 is sent to the oxygen-enriched water purifier 50, Oxygen-enriched purified water W is returned to the fish and shell containing tube 21 again by the same operation as the oxygen-enriched water purification device 30. The functions and effects of the other parts are the same as those of the oxygen-enriched water purification device 30 described above.

In this way, by using the oxygen-enriched water purification device 50, the squid C stored in the seafood storage tube 21 can be kept alive for a long time. 1. Since the water does not overflow or spill from the pressurized container 53 and the water supply container 57, the two seafood storage tubes containing squid C as shown in Figs. 6 and 7 2 1 It is also possible to carry it while it is connected to the oxygen-enriched water purification device 50 in a hand-held transport box 62.

The transport box 62 is composed of a rectangular parallelepiped box body 62b with an open top, a lid 62a that can be attached to and detached from the box body, and a hand strap 62c that is locked to the box body 62b. The two seafood storage tubes 21 containing the power C and the oxygen-enriched water purifier 50 are connected to the box body 62b, and the switch 61 is turned on to turn on the oxygen-enriched water purifier. By operating 50 and putting the lid 62a on the box body 62b, it can be transported as it is, and the squid C can be kept alive for a long time. In addition, since the carrying box 62 can be lowered by grasping the carrying string 62c, it is easy to carry and unload the vehicle. Therefore, in a fresh fish store that sells squid C and the like alive, if the squid C is handed or shipped to the buyer in the state shown in Figs. You can keep it alive. In the present embodiment, the two seafood storage tubes 21 are connected to the oxygen-enriched water purification device 50.However, the present invention is not limited to this, and the filtration container 51, the pressurized container 53, and the water supply By changing the volume of the container 57, the water supply capacity of the water pump 58, or the air supply capacity of the air pump 55, one or three or more seafood storage tubes 21 can be connected. it can. Industrial applicability

The oxygen-enriched water purification device of the present invention is a device suitable for delivering fish and shellfish alive to restaurants, restaurants, and the like, but is not limited to a vehicle dedicated to transporting seafood, but a general-purpose vehicle. Even so, by installing the oxygen-enriched water purification apparatus of the present invention, fish and shellfish can be transported alive. In addition, because it can be mounted on small fishing boats, it is easier than ever to transport fish catches to landing ports using living cages. Furthermore, it can be applied to purify water containing fish and shellfish when storing and displaying the fish and shellfish alive at restaurants, restaurants and sales outlets.

Claims

The scope of the claims

1. Filtration means for purifying water supplied from the outside, a water storage tank capable of storing purified water that has passed through the filtration means, and a pressurized container disposed in the water storage tank with an opening downward. A bubble generator arranged between the bottom of the water tank and the pressurized container; an air pump for supplying air to the bubble generator; and purified water oxygen-enriched in the water tank. An oxygen-enriched water purification device, comprising: a water pump for feeding water to the water purifier.

2. The oxygen-enriched purified water according to claim 1, wherein the filtration means is provided with a filtration tank into which water supplied from the outside is allowed to fall, and a filtration material stacked in the filtration tank. apparatus.

3. The oxygen-enriched water purifier according to claim 1, wherein a through-hole is provided at a position higher than an opening of the pressurized container.

4. The oxygen-enriched water purifier according to claim 1, wherein an exhaust valve whose opening is adjustable is provided in the pressurized container.

5. An air-tight filter container for purifying water supplied from the outside, an air-tight pressurized container connected to the filter container, a bubble generator arranged in the pressurized container, An oxygen-enriched purification system comprising: an air pump that supplies air to a foam generator; an airtight water supply container that communicates with the pressurized container; and a water supply pump that is provided to communicate with the water supply container. apparatus.

6. The oxygen-enriched water purification apparatus according to claim 5, wherein an exhaust valve whose opening is adjustable is provided in the water supply container.

7. The oxygen-enriched water purifier according to claim 5, wherein the filtration container, the pressurized container, and the water supply container are formed of a flexible film material.