JP2007325558A - Method for water treatment and apparatus for water treatment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for water treatment and an apparatus for water treatment, which economically reduce an ammonia nitrogen concentration in raising water and improves cleaning of raising water of life and transparency of raising water of the life when water to be treated is raising water of the life. <P>SOLUTION: A raising water tank 1 is charged with raising water useful for raising life and micronanobubbles are generated from a micronanobubble generator 15 mounted in the raising water tank 1. Micronanobubble-containing raising water obtained by adding micronanobubbles to raising water is brought into contact with braid-shaped polyvinylidene chloride filling materials 20 and introduced into a filter. The micronanobubble-containing raising water passed from the filter is reintroduced into the raising water tank 1. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a water treatment method and a water treatment apparatus, and more particularly, to a breeding water treatment method and a breeding water treatment apparatus used for breeding creatures such as fish and shellfish in a creature breeding facility such as an aquarium. In addition, the present invention, in particular, efficiently generates micro-nano bubbles in water to produce breeding water containing micro-nano bubbles, and treats micro-bubbles of unnecessary size for living creatures with microorganisms propagated in the filler, The present invention relates to a water treatment method and a water treatment apparatus capable of effectively raising creatures. In addition, the present invention particularly includes microorganisms such as nitrite-producing bacteria and nitrate-producing bacteria that are bred in a filtration tank by introducing the breeding water containing micro-nano bubbles and rearing a living creature into a gravity filtration tank. The present invention relates to a water treatment method and a water treatment apparatus capable of activating the microbial treatment to significantly increase the microbial treatment efficiency of ammonia nitrogen, which is harmful to fish, and making the water treatment apparatus compact and improving the quality of treated water.

  Conventionally, most of the water treatment apparatuses for breeding water such as aquariums are gravity filtration tanks and rapid filtration machines. In a conventional gravity filtration tank, sand is mainly used as a filter medium, and ammonia nitrogen discharged from living organisms is oxidized by breeding microorganisms such as nitrite-producing bacteria and nitrate-producing bacteria.

  Here, in order to propagate microorganisms such as nitrite-producing bacteria and nitrate-producing bacteria, a large-area filtration tank is required. In order to constantly propagate nitrite-producing bacteria and nitrate-producing bacteria, the nitrite that is bred in the filtration tank is continuously circulated for 24 hours a day between the breeding tank and the filtration tank. It is necessary to supply oxygen to aerobic microorganisms such as producers and nitrate-producing bacteria.

  However, there is a problem that techniques for efficiently breeding microorganisms such as nitrite-producing bacteria and nitrate-producing bacteria have not yet been established.

  Conventionally, as a method and apparatus using nanobubbles, there is one described in Japanese Patent Application Laid-Open No. 2004-121962.

  This technology utilizes the characteristics of nanobubbles such as reduction of buoyancy, increase of surface area, increase of surface activity, generation of local high-pressure field, and surface active action and bactericidal action by realizing electrostatic polarization. More specifically, the interrelation between them makes it possible to purify polluted water by washing various objects with high functionality and low environmental load through the adsorption function of dirt components, the high-speed washing function of the object surface, and the sterilization function. Like to do. In the prior art, in order to reduce the ammonia nitrogen concentration in the breeding water and improve the transparency, it is indispensable that the circulation pump is operated continuously for 24 hours.

  Here, in the said prior art, since the circulation pump is operating continuously for 24 hours now, there exists a problem that the operating cost of an apparatus is high. On the other hand, if the operation time of the circulation pump is shortened, there is a problem that it is difficult to maintain ammonia nitrogen concentration and transparency without problems in breeding water.

  In addition, as found by the present inventors, when a conventional micro / nano bubble generator is installed in an exhibition tank, depending on the type of fish, the micro bubbles may adhere to the gills of the fish and weaken the fish. There is a problem that there are cases.

  Conventionally, as a technique using other micro / nano bubbles, there is a method of generating nano bubbles described in Japanese Patent Laid-Open No. 2003-334548.

  This technology is composed of a step of decomposing and gasifying a part of the liquid in the liquid, a step of applying ultrasonic waves in the liquid or a step of decomposing and gasifying part of the liquid, and a step of applying ultrasonic waves. ing.

  Conventionally, as a technique using other micro-nano bubbles, there is a waste liquid treatment apparatus using ozone micro-bubbles described in JP-A-2004-321959.

  In this technology, ozone gas generated from the ozone generator and waste liquid extracted from the lower part of the treatment tank are supplied to the microbubble generator via a pressure pump. Moreover, the generated ozone microbubbles are ventilated into the waste liquid in the treatment tank through the opening of the gas blowing pipe.

  In the last two prior arts as well, the circulation pump is continuously operated for 24 hours, and there is a problem that the operating cost of the apparatus is high.

In addition, in the last two prior arts, there is no description about the relationship between the device and the living thing, so even if referring to those techniques, the relationship between the micro-nano bubble and the living thing can be understood. However, there is a problem that no information can be obtained about the method and apparatus for treating the breeding water used for breeding the creature so that the creature can spend comfortably.
JP 2004-121962 A JP 2003-334548 A JP 2004-321959 A

  Then, the subject of this invention can reduce ammonia nitrogen concentration in breeding water economically, and when the water to process is breeding water of living creatures, it can improve the purification capacity and transparency of breeding water of the living creatures. It is providing the water treatment method and water treatment apparatus which can be performed. Moreover, the subject of this invention can activate microorganisms, such as a nitrite production microbe and a nitrate production microbe, especially, and reduces the ammonia nitrogen concentration in breeding water economically using these activated microbes. It is another object of the present invention to provide a water treatment method and a water treatment apparatus that can improve the transparency of breeding water. Another object of the present invention is to provide a water treatment method and a water treatment apparatus that can significantly reduce the operating cost, and can reduce ammonia nitrogen concentration in breeding water and improve transparency. .

In order to solve the above problems, the water treatment method of the present invention comprises:
After introducing the breeding water used for breeding the creatures into the breeding aquarium for breeding creatures, generating micro / nano bubbles from the micro / nano bubble generator installed in the breeding tank,
Bring the breeding water containing micro-nano bubbles to the breeding water in contact with the filler located in the breeding aquarium,
Introducing the micro-nano bubble-containing breeding water in contact with the filler, into a filtration device,
The breeding water containing the micro-nano bubbles that has passed through the filtration device is introduced into the breeding aquarium.

  Ordinary bubbles (bubbles) are bubbles that rise in water and eventually pop off and disappear on the surface. Microbubbles are bubbles with a diameter of 10 to several tens of micrometers, It is a bubble that shrinks and eventually disappears (complete dissolution). Nanobubbles are bubbles that are even smaller than microbubbles (bubbles having a diameter of several hundreds of nanometers or less) and can exist in water indefinitely. In the present specification, the micro-nano bubble is defined as a bubble in which the micro bubble described above and the nano bubble described above are mixed.

  The present inventor has discovered that when living organisms are bred with micro-nanobubble-containing bred water containing bred water containing micro-nano bubbles, any organism can be activated. And when micronanobubble containing breeding water was used as breeding water, it discovered that it was possible to breed saltwater fish and freshwater fish simultaneously with one aquarium.

  In other words, we discovered that micro-nano bubble technology is beneficial for aquarium water treatment facilities.

  In addition, the present inventor has found that some of the microbubbles adhere to the gills of the fish and may cause problems in the growth of the fish. We found that processing bubbles significantly reduces the percentage of microbubbles that attach to fish gills.

  According to the present invention, since living creatures are bred with micronanobubble-containing breeding water including micronanobubbles, biological activity can be realized, for example, in fish, the growth can be accelerated. In addition, because the breeding water containing micro-nano bubbles is introduced into the filtration device and processed, for example, when the filtration device is a gravity filtration tank, microorganisms in the gravity filtration tank can be activated, and the filtration device The performance can be greatly improved. Moreover, since the breeding water containing micro-nano bubbles is brought into contact with the filler, microbubbles can be reduced by microorganisms that have propagated in the filler. Therefore, since the microbubbles adhering to the gills of the fish can be suppressed below a predetermined level, the fish is not weakened.

  Moreover, the water treatment method of one embodiment is a filter tank in which microorganisms have propagated or a filter in which microorganisms have not propagated.

  The filtration tank is defined as a filtration device in which microorganisms capable of oxidizing ammonia nitrogen (for example, nitrite-producing bacteria and nitrate-producing bacteria) are propagated.

  Moreover, the said filter is defined as the filtration apparatus which does not have microorganisms inside but performs a physical process, such as filtration.

  Moreover, as for the water treatment method of one Embodiment, the said filtration apparatus is a gravity-type filtration tank or a rapid filter.

  Inside the gravity filtration tank, microorganisms that can oxidize ammonia nitrogen (for example, nitrite-producing bacteria and nitrate-producing bacteria) are bred, and the transparency of breeding water or breeding water containing micro-nano bubbles is improved. It is defined as a filtration device capable of performing physical filtration.

  Further, the rapid filter is defined as a filtration device in which the flow rate of breeding water or breeding water containing micro-nano bubbles is the speed at which microorganisms cannot propagate.

  According to the above embodiment, when the filtration device is a gravity filtration tank, it is possible to oxidize ammoniacal nitrogen by microorganisms propagated inside the filtration device, and the micro-nanobubble-containing breeding water existing inside the filtration device. Physical processing can be performed. Moreover, since the microorganism inside can be activated with micro-nano bubbles, the activity of the propagated microorganism can be improved, and the oxidizing ability of ammoniacal nitrogen can be improved.

  Moreover, when the said filtration apparatus is a rapid filter, the transparency of breeding water can be improved. In addition, since micro-nano bubbles have the property of enhancing and strengthening the activity of microorganisms that oxidize ammonia nitrogen, ammonia nitrogen can be treated to some extent even with a combination of micro-nano bubble generator and rapid filter.

  In one embodiment of the water treatment method, the filtration device is a gravity filtration tank, and the gravity filtration tank is filled with activated carbon and a calcium carbonate mineral.

  The activated carbon serves as a filter medium, and the calcium carbonate mineral serves as a pH adjuster.

  According to the above embodiment, ammonia nitrogen harmful to fish can be oxidized to nitrate nitrogen by propagating microorganisms on activated carbon as a filter medium. In addition, the increase in nitrate nitrogen, which is acidic in aqueous solution, lowers the pH in the breeding water and acidifies the breeding water, but calcium carbonate mineral as a pH adjusting material that exhibits alkalinity in the aqueous solution is filtered by gravity filtration. Since the tank is filled, acid and alkali can be neutralized, and the nature of the breeding water will not be greatly inclined to either one.

  That is, since the calcium carbonate mineral is filled, the breeding water is not excessively acidified even if ammonia nitrogen produced by the organism is oxidized to nitrate nitrogen by microbial activation by micro-nano bubbles.

  Moreover, since the organic matter in the breeding water adsorbed on the activated carbon is decomposed by the microorganisms propagated on the activated carbon, the breeding water can be purified.

  Moreover, the water treatment method of one Embodiment has installed the water-permeable mat in the upper part of the said activated carbon in the said gravity type filtration tank.

  A water-permeable mat is a mat manufactured from petroleum. The water-permeable mat has an advantage of being lightweight.

  According to the above-described embodiment, the water-permeable mat can surely filter the suspended matter in the breeding water (for example, fish excrement and residual food), so that the transparency of the breeding water can be prevented from decreasing with the use of the apparatus. .

  Moreover, the water treatment method of one Embodiment has connected the ozone generator to the said micro nano bubble generator.

  According to the said embodiment, while being able to oxidatively decompose the yellow coloring component in breeding water strongly with ozone micro nano bubbles, breeding water can be sterilized with ozone micro nano bubbles. However, if the amount of ozone is large, all microorganisms are killed, so it goes without saying that the amount of ozone micro-nano bubbles generated is appropriately adjusted.

  In one embodiment of the water treatment method, a sacrificial tree or a sacrificial rock is disposed in the breeding aquarium, and the micro / nano bubble generator and the filler are installed inside the pseudo tree or the pseudo rock. ing.

  A fake tree is a fake “false” tree made of a light and water-resistant material such as synthetic resin. Sacrificial rocks are fake “false” rocks made of a light, water-resistant material such as synthetic resin. Real trees and rocks are heavy and difficult to machine inside. Sacrificial trees and rocks have the advantages of being light and easy to machine inside.

  According to the above embodiment, since the micro-nano bubble generator and the filler are installed inside the pseudo tree or pseudo rock in the aquarium, in the case of an exhibition aquarium to be shown to the audience, the micro-nano bubble generator and the filler are It can be hidden inside the artificial rock, and the production effect can be increased.

  In one embodiment of the water treatment method, the filler is a string-type polyvinylidene chloride filler or a ring-type polyvinylidene chloride filler.

  According to the said embodiment, since the said filler is a polyvinylidene chloride filling, many types of microorganisms can be propagated and the purification effect of breeding water can be enlarged.

  Moreover, as for the water treatment method of one Embodiment, the said breeding water is seawater, brackish water, or fresh water.

  The inventor can use the water treatment method of the present invention to reduce ammonia nitrogen concentration in the breeding water, regardless of whether the breeding water is seawater, brackish water or fresh water. I confirmed that I can purify.

  According to the said embodiment, since the said breeding water is seawater, brackish water, or fresh water, breeding water can be purified reliably.

  In the water treatment method of one embodiment, microorganisms are propagated in the filler, and a part of the microbubbles generated by the micro / nano bubble generator is removed by the microorganisms.

  According to the embodiment, since a part of the microphone bubble generated by the micro-nano bubble generator is removed by the microorganism, when the organism to be bred is a fish, the amount of microbubbles attached to the fish gill is a predetermined value. The following can be suppressed. Therefore, the micro / nano bubbles do not adversely affect the fish being bred.

The water treatment device of the present invention is
A breeding aquarium for introducing breeding water used for breeding creatures;
A micro-nano bubble generator installed in the breeding aquarium,
A filtration device into which micro-nano bubble-containing breeding water is introduced by adding micro-nano bubbles to the breeding water;
A circulation pump for introducing the micro-nano bubble-containing breeding water that has passed through the filtration device into the breeding water tank is provided.

  According to the present invention, since the micronano bubble-containing breeding water is filtered by the filtration device, a harmful substance for fish or the like is treated with at least one of microbial treatment and physical treatment, and the amount of harmful substance is reduced. Can be reduced. Therefore, the quality of the breeding water containing the microphone nanobubbles can be ensured. The breeding water can be circulated and used by the circulation pump.

  Moreover, as for the water treatment apparatus of one Embodiment, the said filtration apparatus is a gravity-type filtration tank or a rapid filter.

  Moreover, as for the water treatment apparatus of one Embodiment, the said filtration apparatus is a gravity type filtration tank, and is filled with activated carbon and a calcium carbonate mineral in the said gravity type filtration increase.

  According to the above embodiment, ammonia nitrogen harmful to fish can be oxidized to nitrate nitrogen by propagating microorganisms on activated carbon as a filter medium. In addition, since the gravity filtration tank is filled with calcium carbonate mineral that exhibits alkaline properties in aqueous solution, even if nitrate nitrogen with acidic properties is produced in aqueous solution, It does not become so acidic or alkaline that it cannot be done.

  In one embodiment, the gravity filtration tank is filled with a water-permeable mat, activated carbon, and calcium carbonate mineral, and the water-permeable mat is located above the activated carbon. The activated carbon is located above the calcium carbonate mineral.

  According to the said embodiment, the suspended | floating matter in breeding water can be removed completely with a water-permeable mat, and it can suppress that the transparency of breeding water falls with use of an apparatus. In addition, by breeding microorganisms on activated carbon as a filter medium, ammonia nitrogen that is harmful to fish can be oxidized to nitrate nitrogen. Furthermore, the produced nitrate nitrogen can be neutralized with a calcium carbonate mineral.

  In one embodiment of the water treatment device, the filtration device is a gravity filtration tank, and the gravity filtration tank is filled with polyvinylidene chloride filler, activated carbon, and calcium carbonate mineral, The vinylidene chloride filler is located above the activated carbon, and the activated carbon is located above the calcium carbonate mineral.

  According to the said embodiment, organic substances, such as the residual feed of breeding water, can be decomposed | disassembled with the microorganisms propagated to the polyvinylidene chloride filling. In addition, by breeding microorganisms on activated carbon as a filter medium, ammonia nitrogen that is harmful to fish can be oxidized to nitrate nitrogen. Furthermore, the produced nitrate nitrogen can be neutralized with a calcium carbonate mineral.

  Moreover, as for the water treatment apparatus of one Embodiment, the said circulation pump pumps the said micro nano bubble containing breeding water which passed the said filtration apparatus to the said micro nano bubble generator.

  According to the above embodiment, since the circulation pump also functions as a circulation pump that supplies the aqueous solution to the micro / nano bubble generator, one of the pumps can be omitted, and the operating cost of the apparatus can be reduced.

  According to the water treatment method and the water treatment apparatus of the present invention, since living creatures are bred with micro-nano bubble-containing breeding water including micro-nano bubbles, biological activity can be realized, and in fish, the growth is accelerated. Can do. In addition, because the breeding water containing micro-nano bubbles is introduced into the filtration device and processed, for example, when the filtration device is a gravity filtration tank, microorganisms in the gravity filtration tank can be activated, and the filtration device The performance can be greatly improved. Moreover, since the breeding water containing micro-nano bubbles is brought into contact with the filler, microbubbles can be reduced by microorganisms that have propagated in the filler. Therefore, since the microbubbles adhering to the gills of the fish can be suppressed below a predetermined level, the fish is not weakened.

  Hereinafter, the present invention will be described in detail with reference to the drawings.

(First embodiment)
Drawing 1 is a figure showing typically the water treatment equipment of a 1st embodiment of the present invention.

  This water treatment apparatus is used, for example, in a facility for raising creatures such as an aquarium. This water treatment apparatus has a breeding aquarium 1 for breeding living creatures, and seawater, brackish water or fresh water as breeding water is introduced into the breeding aquarium 1 through an inflow pipe 5.

  In the example shown in FIG. 1, fish 2, specifically, saltwater fish and freshwater fish are bred in this breeding aquarium 1.

  The water introduced into the breeding aquarium 1 is added to the breeding aquarium 1 when the water in the breeding aquarium 1 is reduced by evaporation or the like. However, it is needless to say that this is not necessary. For example, a small amount of water may be always introduced into the breeding aquarium 1. A sacrificial tree (false tree) 18 is installed near the corner of the breeding aquarium 1. A sacrificial rock can be used instead of the sacrificial tree 18. The sacrificial tree 18 is provided with a micro / nano bubble generator 15 and is filled with a string-type polyvinylidene chloride filler 20 as a filler. In the string-type polyvinylidene chloride filler 20, microorganisms capable of oxidizing ammonia nitrogen (for example, nitrite-producing bacteria (nitrosomonas), nitrate-producing bacteria (nitrobacter), etc.) are propagated in large quantities.

  When the micro-nano bubble generator 15 and the string-type polyvinylidene chloride filler 20 are installed inside the pseudo-tree 18 or the pseudo-rock in the breeding aquarium 1, in the case of an exhibition tank to be shown to the audience, the micro-nano-bubble generator 15 and the string The shape-type polyvinylidene chloride filler 20 can be concealed inside the pseudo tree 18 or the pseudo rock, and the production effect can be increased.

  The breeding water is circulated by the circulation pump 14 between the breeding water tank 1 and the gravity filtration tank located below the breeding water tank 1. The gravity filtration tank includes a lower water tank 12 and a filtered water tank 11 located in the lower water tank 12. The breeding water that has passed through the filtered water tank 11 is introduced into the breeding water tank 1 from the lower water tank 12 by the circulation pump 14.

  The overflow of breeding water and the sludge at the bottom move through the bottom sludge extraction pipe 3, and through the sprinkling pipe 6, the water droplet 26 and the water drop 26 are passed from the small hole 7 of the sprinkling pipe 6 to the filtered water tank 11 located in the lower water tank 12. It becomes to be sprinkled. In addition, when there is much circulating water amount of breeding water, it cannot be overemphasized that it becomes the water droplet 26 and becomes continuous watering. The sprinkling pipe 6, the filtration water tank 11, and the lower water tank 12 constitute a gravity filtration system.

  As shown in FIG. 1, in the filtered water tank 11, from the upper side to the lower side, a water-permeable mat 24, a net bag 8 containing activated carbon 21, and a net containing a calcium carbonate mineral 22 such as coral and oyster shells. Bags 9 are arranged in the order of enumeration. The lower part of the filtered water tank 11 is composed of a porous plate 10. From this, the breeding water after filtration can circulate through the breeding water tank 1, the filtered water tank 11 and the lower water tank 12.

  Specifically, the breeding water is pumped to the micro / nano bubble generator 15 through the suction pipe 13 and the discharge pipe 4 of the circulation pump 14. The micro / nano bubble-containing breeding water discharged from the micro / nano bubble generator 15 generates a micro / nano bubble stream 34 in the breeding aquarium 1. In this way, the micro / nano bubbles are distributed in the breeding aquarium 1. Microbubbles are bubbles having a bubble diameter of 10 to several tens of μm when they are generated. Nanobubbles are bubbles having a diameter of several hundred nm or less. The microbubbles change from bubbled to micronanobubbles having a diameter of about 10 μm to several hundred nm by contraction after generation.

  As shown in FIG. 1, an air suction pipe 17 is connected to the micro / nano bubble generator 15. A valve 16 for adjusting the air suction amount is set at a predetermined location of the air suction pipe 17. As described above, the micro / nano bubble generator 15 is connected to the circulation pump 14 via the discharge pipe 4. When the circulation pump 14 discharges the breeding water, the micro / nano bubble generator 15 sucks air from the air suction pipe 17 simultaneously with the discharge of the breeding water. Then, the micro / nano bubble generator 15 discharges the breeding water containing micro / nano bubbles to the breeding aquarium 1. The micro-nano bubble-containing breeding water discharged from the micro-nano bubble generator 15 generates a micro-nano bubble water flow 34 in the breeding aquarium 1.

  The micro / nano bubble stream 34 is generated in the pseudo tree 18 and passes through a portion of the pseudo tree 18 filled with the string-like polyvinylidene chloride filler 20.

  In general, microbubbles are fine bubbles having a diameter of 50 microns or less, and nanobubbles are defined as fine bubbles having a diameter of less than 1 micron. The present inventor simultaneously generates both microbubbles and nanobubbles and contains them in the breeding water to create new breeding water (micronanobubble-containing treated water), such as nitrite-producing bacteria and nitrate-producing bacteria. It has been found that the activity of microorganisms such as nitrite-producing bacteria and nitrate-producing bacteria increases when introduced into a microorganism tank where these microorganisms propagate.

  The present inventor has also found that microbubbles adhere to fish gills and are harmful to fish, and nanobubbles are too small to cause problems. Then, the micro-nano bubble generator 15 is accommodated in the artificial tree 18, and polyvinylidene chloride is used as a filler in a portion through which breeding water containing micro-nano bubbles passes (in this embodiment, a string-type polyvinylidene chloride filler 20). ) Was found that the microbubbles adhering to the gills of the fish adhered to the filler 20, and the microbubbles in question were reduced by the microorganisms that had propagated in the filler.

  In the first embodiment, since the micro-bubbles are processed among the micro-nano bubbles in the microorganisms that proliferate in a large amount in the string-type polyvinylidene chloride filler 20, the micro-bubbles can be reduced and predetermined It is possible to prevent the above amount of microbubbles from adhering to the fish gill and weakening the fish. That is, the micro / nano bubbles discharged from the micro / nano-bar generator 15 can be rendered harmless by the microorganism.

(Second Embodiment)
Drawing 2 is a figure showing typically the water treatment equipment of a 2nd embodiment of the present invention.

  In the water treatment apparatus of the second embodiment, the ring-type polyvinylidene chloride filler 23 is filled in the sacrificial tree 18 instead of the string-like polyvinylidene chloride filler 20. Different from water treatment equipment.

  In the water treatment device of the second embodiment, the same reference numerals are assigned to the same components as those of the water treatment device of the first embodiment, and the description thereof will be omitted. Moreover, in the water treatment apparatus of 2nd Embodiment, it abbreviate | omits description about the effect and modification which are common in the water treatment apparatus of 1st Embodiment, The structure and effect | action different from the water treatment apparatus of 1st Embodiment are omitted. Only the effect will be described.

  In the second embodiment, a ring-type polyvinylidene chloride filler 23 as a filtering material is filled in the sacrificial tree 18. From this, the microorganisms activated by the micro-nano bubbles on the ring-type polyvinylidene chloride filler 23 can be stably propagated. And, by reducing the amount of microbubbles by processing microbubbles that attach to the gills of fish and cause harm to the fish, among the micronanobubbles, by the microorganisms proliferating in large quantities on the ring-type polyvinylidene chloride filler 23 Thus, the micro / nano bubbles discharged from the micro / nano-bar generator 15 are rendered harmless.

(Third embodiment)
Drawing 3 is a figure showing typically the water treatment equipment of a 3rd embodiment of the present invention.

  The water treatment device of the third embodiment is different from the water treatment device of the first embodiment in that a timer 29 is installed in the circulation pump 14.

  In the water treatment device of the third embodiment, the same reference numerals are assigned to the same components as the components of the water treatment device of the first embodiment, and description thereof is omitted. Moreover, in the water treatment apparatus of 3rd Embodiment, it abbreviate | omits description about the effect and modification which are common in the water treatment apparatus of 1st Embodiment, The structure and effect | action different from the water treatment apparatus of 1st Embodiment are omitted. Only the effect will be described.

  Since micro-nano bubbles exist in water for a long time, dissolved oxygen in water can be maintained without continuously operating the circulation pump for 24 hours. As in the third embodiment, when the lubrication pump 14 is connected to the timer 29 and the circulation pump 14 is simply operated based on the timer 29, the operation cost of the apparatus can be significantly reduced.

  Since the microorganisms are activated by the micro-nano bubbles, the performance of the gravity filtration tank can be greatly improved. Therefore, the operation of the circulation pump 14 can be an intermittent operation by the timer 29, and significant energy saving can be achieved.

(Fourth embodiment)
Drawing 4 is a figure showing typically the water treatment equipment of a 4th embodiment of the present invention.

  The water treatment apparatus according to the fourth embodiment is different from the water treatment apparatus according to the first embodiment in that the water-permeable mat 24 is replaced with a ring-type polyvinylidene chloride filler 23 and a timer 29 is connected to the circulation pump 14. Is different.

  In the water treatment device of the fourth embodiment, the same reference numerals are assigned to the same components as those of the water treatment device of the first embodiment, and the description thereof will be omitted. Moreover, in the water treatment apparatus of 4th Embodiment, description is abbreviate | omitted about the effect and modification which are common in the water treatment apparatus of 1st Embodiment and 3rd Embodiment, and 1st Embodiment and 3rd Embodiment are omitted. Only configurations and operational effects different from those of the water treatment apparatus of the embodiment will be described.

  The fourth embodiment is different from the first embodiment in that a ring-type polyvinylidene chloride filler 23 is disposed in the upper part of the filtered water tank 11 instead of the water-permeable mat 24.

  The water-permeable mat is simply used to remove suspended solids in the breeding water, but the ring-type polyvinylidene chloride filler 23 is used to decompose organic matter such as fish residual food in the breeding water rather than the water-permeable mat. Is better. Therefore, according to the water treatment apparatus of the fourth embodiment, a larger amount of creatures can be bred in the breeding aquarium 1.

(Fifth embodiment)
FIG. 5 is a diagram schematically showing a water treatment apparatus according to a fifth embodiment of the present invention.

  The water treatment device of the fifth embodiment is that the polyvinylidene chloride filler 20 disposed inside the sacrificial tree 18 is replaced with a ring-type polyvinylidene chloride filler 23. Is different.

  In the water treatment device of the fifth embodiment, the same reference numerals are assigned to the same components as those of the water treatment device of the third embodiment, and the description thereof will be omitted. Further, in the water treatment device of the fifth embodiment, the description of the operations and effects common to the water treatment devices of the first embodiment and the third embodiment will be omitted, and the first embodiment and the third embodiment will be omitted. Only configurations and operational effects different from those of the water treatment apparatus of the embodiment will be described.

  The string-type polyvinylidene chloride filler 20 in the pseudo tree 18 in the third embodiment is replaced with a ring-type polyvinylidene chloride filler 23 in the fifth embodiment.

  When the string-type polyvinylidene chloride filler is arranged in the pseudo tree, a fixing bracket (not shown in FIG. 3) is required. On the other hand, as in the fifth embodiment, the ring-type polyvinyl chloride is attached to the sacrificial tree 18. When the vinylidene filler 23 is disposed, there is an advantage that no fixing bracket is required.

  According to the fifth embodiment, since the microbial propagation member arranged in the sacrificial tree 18 is the ring-type polyvinylidene chloride filler 23, microorganisms can be propagated on the microbial propagation member without problems. Of course, even if the space in the pseudo tree 18 is narrow, the microbial propagation member can be easily installed.

(Sixth embodiment)
FIG. 6 is a diagram schematically illustrating a water treatment apparatus according to a sixth embodiment of the present invention.

  The water treatment device of the sixth embodiment is that the water-permeable mat 24 arranged at the top of the filtered water tank 11 is replaced by a string-like polyvinylidene chloride filler 20. Is different.

  In the water treatment device of the sixth embodiment, the same reference numerals are assigned to the same components as those of the water treatment device of the third embodiment, and the description thereof will be omitted. Moreover, in the water treatment apparatus of 6th Embodiment, description is abbreviate | omitted about the effect and modification which are common in the water treatment apparatus of 1st Embodiment and 3rd Embodiment, and 1st Embodiment and 3rd Embodiment are omitted. Only configurations and operational effects different from those of the water treatment apparatus of the embodiment will be described.

  In the sixth embodiment, the water-permeable mat 24 in the third embodiment is replaced with a string-like polyvinylidene chloride filler 20.

  A water-permeable mat is good for removing suspended solids in the breeding water, but a string-type polyvinylidene chloride filler 20 is excellent for decomposing organic substances such as residual feed of fish in the breeding water. Therefore, according to the water treatment apparatus of the sixth embodiment, a larger amount of creatures can be bred in the breeding aquarium 1.

(Seventh embodiment)
FIG. 7 is a diagram schematically showing a water treatment device according to a seventh embodiment of the present invention.

  The water treatment device of the seventh embodiment is different from the water treatment device of the third embodiment in that an ozone generator 28 is connected to the suction pipe 17 of the micro / nano bubble generator 15. In FIG. 7, reference numeral 27 denotes a large number of fish.

  In the water treatment device of the seventh embodiment, the same reference numerals are assigned to the same components as those of the water treatment device of the third embodiment, and the description thereof will be omitted. Moreover, in the water treatment apparatus of 7th Embodiment, description is abbreviate | omitted about the effect and modification which are common in the water treatment apparatus of 1st Embodiment and 3rd Embodiment, and 1st Embodiment and 3rd Embodiment are omitted. Only configurations and operational effects different from those of the water treatment apparatus of the embodiment will be described.

  When the ozone generator 28 is connected to the suction pipe 17 as in the seventh embodiment, the bubbles generated in the micro / nano bubble generator 15 can be changed to ozone micro / nano bubbles instead of micro / nano bubbles. Therefore, the oxidizing power of bubbles generated by the micro / nano bubble generator 15 can be improved.

  The breeding water is colored yellow when it is circulated for a long time, but when the present inventors oxidatively decompose the breeding water by the strong oxidizing power of ozone, Even found that there is no coloring.

  According to the water treatment apparatus of the seventh embodiment, since the bubbles generated by the micro / nano bubble generator 15 are ozone micro / nano bubbles having strong oxidizing power, the breeding water is colored even if the breeding water is used for a long time. There is nothing.

(Eighth embodiment)
FIG. 8 is a diagram schematically showing a water treatment apparatus according to an eighth embodiment of the present invention.

  The water treatment device of the eighth embodiment is different from the water treatment device of the first embodiment in that the gravity filtration tank system of the first embodiment is changed to a system using the rapid filter 32.

  In the water treatment device of the eighth embodiment, the same reference numerals are assigned to the same components as those of the water treatment device of the first embodiment, and the description thereof will be omitted. Moreover, in the water treatment apparatus of 8th Embodiment, it abbreviate | omits description about the effect and modification which are common in the water treatment apparatus of 1st Embodiment, The structure and effect | action different from the water treatment apparatus of 1st Embodiment are omitted. Only the effect will be explained.

  The breeding water overflow and the bottom sludge in the breeding aquarium 1 are introduced into the pit 30 through the bottom sludge extraction pipe. The breeding water and sludge introduced into the pit 30 are introduced into the rapid filter 32 by the pit pump 31 to mainly physically process the suspended matter in the breeding water. The breeding water after rapid filtration is introduced into the treated water tank 33 and then pumped to the micro / nano bubble generator 15 by the circulation pump 14.

  In the water treatment apparatus of the eighth embodiment, the suspended matter in the breeding water is physically treated, so the suspended matter does not block the mouth portion of the micro / nano bubble generator 15. Therefore, the generation efficiency of the micro / nano bubbles generated by the micro / nano bubble generator 15 does not decrease with the use of the apparatus.

(Ninth embodiment)
FIG. 9 is a diagram schematically showing a water treatment apparatus according to the ninth embodiment of the present invention.

  The water treatment device of the ninth embodiment differs from the water treatment device of the eighth embodiment in that an ozone generator 28 is connected to the suction pipe 17 of the micro / nano bubble generator 15.

  In the water treatment device of the ninth embodiment, the same reference numerals are assigned to the same components as the components of the water treatment device of the eighth embodiment, and description thereof will be omitted. In the water treatment apparatus of the ninth embodiment, the description of the operation effects and modifications common to the water treatment apparatuses of the first and eighth embodiments will be omitted, and the water treatment of the first and eighth embodiments will be omitted. Only the configuration and operational effects different from those of the apparatus will be described.

  When the ozone generator 28 is connected to the suction pipe 17 as in the ninth embodiment, the bubbles generated in the micro / nano bubble generator 15 can be made into ozone micro / nano bubbles instead of micro / nano bubbles. Therefore, the oxidizing power of bubbles generated by the micro / nano bubble generator 15 can be improved.

  The breeding water is colored yellow when it is used for a long time. As described above, the present inventors have found that when breeding water is oxidatively decomposed by the strong oxidizing power of ozone, the oxidatively decomposed breeding water is not colored even if it is circulated for a long time.

  According to the water treatment apparatus of the ninth embodiment, since the bubbles generated by the micro / nano bubble generator 15 are ozone micro / nano bubbles having strong oxidizing power, the breeding water is colored even if the breeding water is used for a long time. There is nothing.

  This inventor performed the following tests based on the water treatment apparatus of 1st Embodiment.

  In detail, the capacity of the rearing tank 1 was 1000 liters and the capacity of the lower tank 12 was 800 liters, and a trial operation was performed for one month. After the test run, seawater fish was added, and ammonia nitrogen after 7 days was measured and found to be 0.1 ppm.

  Therefore, the present inventor compared the water tank in which the conventional micro / nano bubbles are not installed, the breeding water of the breeding water tank 1 of the water treatment apparatus according to the first embodiment having the micro / nano bubble generator 15 is harmful substances. It was confirmed that the concentration of water was low and the water quality was excellent, and in particular, the ammonia nitrogen concentration was low and the water quality was excellent. As is clear from the above, according to the present invention, the micro-nano bubble technology can be integrated and utilized in the aquarium water treatment technology, and the effect of reducing the ammonia nitrogen concentration harmful to the fish in the breeding water and improving the transparency are effective. Can be achieved.

It is a figure which shows typically the water treatment apparatus of 1st Embodiment of this invention. It is a figure which shows typically the water treatment apparatus of 2nd Embodiment of this invention. It is a figure which shows typically the water treatment apparatus of 3rd Embodiment of this invention. It is a figure which shows typically the water treatment apparatus of 4th Embodiment of this invention. It is a figure which shows typically the water treatment apparatus of 5th Embodiment of this invention. It is a figure which shows typically the water treatment apparatus of 6th Embodiment of this invention. It is a figure which shows typically the water treatment apparatus of 7th Embodiment of this invention. It is a figure which shows typically the water treatment apparatus of 8th Embodiment of this invention. It is a figure which shows typically the water treatment apparatus of 9th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Breeding tank 2 Fish 3 Bottom sludge extraction pipe 4 Discharge piping 5 Inflow piping 6 Sprinkling piping 7 Small hole 8,9 Net bag 10 Perforated plate 11 Filtration water tank 12 Lower water tank 13 Suction piping 14 Circulation pump 15 Micro nano bubble generator 16 Valve 17 Suction pipe 18 Fake tree 19 Sludge outlet 20 String-type polyvinylidene chloride filling 21 Activated carbon 22 Calcium carbonate mineral 23 Ring-type polyvinylidene chloride filling 24 Permeable mat 25 Water flow 26 Water drop 27 Large amount of fish 28 Ozone generator 29 Timer 30 Pit 31 Pit pump 32 Rapid filter 33 Treated water tank 34 Micro / nano bubble water flow

Claims (16)

After introducing the breeding water used for breeding the creatures into the breeding aquarium for breeding creatures, generating micro / nano bubbles from the micro / nano bubble generator installed in the breeding tank,
Bring the breeding water containing micro-nano bubbles to the breeding water in contact with the filler located in the breeding aquarium,
Introducing the micro-nano bubble-containing breeding water in contact with the filler, into a filtration device,
The water treatment method characterized by introducing the micro-nanobubble-containing breeding water that has passed through the filtration device into the breeding tank. The water treatment method according to claim 1,
The water treatment method, wherein the filtration device is a filtration tank in which microorganisms are propagated or a filter in which microorganisms are not propagated. The water treatment method according to claim 1,
The water treatment method, wherein the filtration device is a gravity filtration tank or a rapid filtration machine. The water treatment method according to claim 1,
The filtration device is a gravity filtration tank,
A water treatment method, wherein the gravity filtration tank is filled with activated carbon and calcium carbonate mineral. The water treatment method according to claim 4,
A water treatment method, wherein a water-permeable mat is installed above the activated carbon in the gravity filtration tank. The water treatment method according to claim 1,
A water treatment method, wherein an ozone generator is connected to the micro / nano bubble generator. The water treatment method according to claim 1,
In the breeding aquarium, there are sacrificial trees or rocks,
The water treatment method, wherein the micro / nano bubble generator and the filler are installed inside the pseudo tree or the pseudo rock. The water treatment method according to claim 1,
The water treatment method, wherein the filler is a string-type polyvinylidene chloride filler or a ring-type polyvinylidene chloride filler. The water treatment method according to claim 1,
The water treatment method, wherein the breeding water is seawater, brackish water or fresh water. The water treatment method according to claim 1,
Microorganisms have propagated in the filler,
A water treatment method, wherein a part of micro bubbles generated by the micro / nano bubble generator is removed by the microorganism. A breeding aquarium for introducing breeding water used for breeding creatures;
A micro-nano bubble generator installed in the breeding aquarium,
A filtration device into which micro-nano bubble-containing breeding water is introduced by adding micro-nano bubbles to the breeding water;
A water treatment apparatus comprising: a circulation pump for introducing the micro-nanobubble-containing breeding water that has passed through the filtration apparatus into the breeding water tank. The water treatment device according to claim 11,
The water treatment device, wherein the filtration device is a gravity filtration tank or a rapid filtration machine. The water treatment device according to claim 11,
The filtration device is a gravity filtration tank,
A water treatment apparatus, wherein activated carbon and calcium carbonate mineral are filled in the gravity-type filtration increase. The water treatment device according to claim 11,
The filtration device is a gravity filtration tank,
The gravity filtration tank is filled with a water-permeable mat, activated carbon, and calcium carbonate mineral,
The water permeable mat is characterized in that the water permeable mat is located above the activated carbon, and the activated carbon is located above the calcium carbonate mineral. The water treatment device according to claim 11,
The filtration device is a gravity filtration tank,
The gravity filtration tank is filled with polyvinylidene chloride filling, activated carbon, and calcium carbonate mineral,
The polyvinylidene chloride filling is located above the activated carbon, and the activated carbon is located above the calcium carbonate mineral. The water treatment device according to claim 11,
The said circulation pump pumps the said micro nano bubble containing breeding water which passed the said filtration apparatus to the said micro nano bubble generator, The water treatment apparatus characterized by the above-mentioned.

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