JP2005287389A - Water-purifying apparatus for fish and shellfish - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a small-sized water-purifying apparatus for fish and shellfish, capable of dealing with a water tank used for appreciating, transporting, raising the fish and shellfish, etc., and capable of raising the fish and shellfish for a long period only by simple maintenance and management. <P>SOLUTION: In the water tank for the fish and shellfish, an air reservoir is formed by installing a plurality of partition plates in a culturing chamber filled with a filter medium and used for culturing aerobic or anaerobic microorganisms, dissolved oxygen-containing water formed by supplying air or oxygen to the chamber is circulated through the water tank and the culturing chamber, and the water tank is miniaturized by enhancing water purification treatment ability of the microorganisms, so that the fish and shellfish are raised for the long period only by cleaning a filter and a remover. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an apparatus for purifying water with microorganisms and the like, and in particular, a water purification apparatus for seafood for domestic or commercial aquariums for appreciation and live fish for rearing raw fish, and to treat waste water The present invention relates to a water purification apparatus for seafood.

  It is extremely important to maintain good water quality in the aquarium for rearing and culturing seafood. In the tank, the metabolites and residual food of seafood are decomposed in the water, and ammonia is generated. This ammonia is converted into nitric acid via nitrite by aerobic bacteria in the aquarium. However, if the above action by aerobic bacteria is insufficient, ammonia and nitrous acid, which are highly toxic to fish and shellfish, may increase and die. For this reason, it is necessary to rapidly change the generated ammonia to nitric acid that is relatively less toxic to fish and shellfish by aerobic bacteria that have passed aquarium water through the filter medium and have been deposited on the filter medium. On the other hand, anaerobic bacteria can reduce nitric acid to nitrogen gas under proper anaerobic environmental conditions.

  2. Description of the Related Art Conventionally, as a water purification device to be installed in a fishery product closed system circulating water tank, there are an upper mold installed at the upper part of the water tank body and a lower mold installed at the lower part. The top type has many problems in terms of water treatment and water quality management because it does not take up a large space in relation to other equipment. On the other hand, the lower type has the advantage that the water capacity can be increased by increasing the capacity of the filtration tank, but it has the disadvantage of increasing the manufacturing cost due to the need for an overflow process in which a hole is made in the bottom of the water tank and a pipe is erected is there.

  In a conventional ornamental small water tank, the bottom sand becomes a bacterial colony and functions as a filter (FIG. 8), and the nitrifying bacteria that have landed on the bottom sand perform nitrification. However, if they are kept for a long time, they are clogged with garbage and an anaerobic region is formed, and a sufficient filtration function cannot be maintained, so they must be cleaned frequently. There are many problems such as killing the bacteria that have been cultivated during the cleaning, and it has been difficult to increase the survival rate of fish in high-density breeding in a small aquarium.

  A device for purifying water that can solve the above problems has been developed (see Patent Document 1, Patent Document 2, and Patent Document 3), but a method of pumping water with a motor pump installed in a water tank. Since it has been adopted, a rise in water temperature is unavoidable, which has been a cause of deteriorating seafood. Therefore, it has been desired to develop an apparatus that can pump water without using a motor pump.

Japanese Patent Laid-Open No. 11-127724 JP-A-11-262344 JP 2002-335810 PR

  The present invention has been made in order to solve the above-described problems in the water purification apparatus, and it is an object of the present invention to provide a water purification apparatus suitable particularly for a fish tank for appreciating or rearing seafood.

  The present invention provides a water purification device inside or outside the aquarium corresponding to a raw fish aquarium containing fresh water or seawater. An aerobic microorganism culture chamber is provided inside the container of the water purification apparatus so as to supply oxygen and air (hereinafter referred to as air), and fresh water or seawater in the aquarium is circulated inside the microorganism culture chamber. I made it. The microorganism culture chamber 1 has a water intake cylinder 6 equipped with a cylindrical filter 11, an air inlet 7, a partition plate 4, an outlet side partition plate 17 A provided with a small hole 8 B and a cut 18, and an air vent cylinder. 5 is erected.

  From the air compressor installed outside the water tank, air is sent to the air stone 10 through the air tube 9, and fine bubbles rising from the air stone 10 cause a suction action, and the water is contained in the air vent cylinder 5 while the water contains bubbles. Rise. The mixed liquid of water and air is discharged from the mixed liquid outlet 12 as indicated by an arrow 70, further rises, passes through the vent hole 24 and collides with the water splash prevention lid 27 as indicated by an arrow 50, and the air is indicated by an arrow 90. It is discharged from the gap to the outside. On the other hand, the water is partially returned to the water tank from the drain hole 25 in the direction of the arrow 80, and a part of the water collides with the water splash prevention lid and flows downward. At this time, undecomposed matter such as organic waste contained in the water falls as indicated by an arrow 60 and stays in the remover (FIG. 3).

  The water in the aquarium water is physically filtered by the filter 11 and enters the water intake cylinder 6 through the small hole 8A of the water intake cylinder. Water passes through the inlet-side partition plate 17B from the notch 15 at the bottom of the water intake tube and spreads into the microorganism culture chamber 1, passing through the passage holes 8A to 8E of the partition plate 4 or the connection pipe 19 while passing between the filter media. Move each room 1A, 1B, 1C, 1D.

  On the other hand, the air passes through the air tube 9 and enters the microorganism culture chamber from the air inlet 7 to form an air reservoir 20 at the top of each chamber (FIG. 4). Water in which oxygen is sufficiently dissolved in the air reservoir promotes the growth of aerobic microorganisms that have been deposited on the filter medium. Ammonia is reduced to nitrate via nitrite by nitrifying bacteria, one of the aerobic microorganisms. In this way, organic waste products generated from metabolites such as dropout scales and excrement of fish and shellfish or residual food can be biologically removed without using a protein skimmer or the like.

  The water purification apparatus of the present invention allows the water in the aquarium to pass through the microorganism culture chamber, decomposes and purifies the metabolites and residual food of fish and shellfish with a filter medium on which aerobic or anaerobic microorganisms have been implanted, thereby improving the water quality. Maintenance and maintenance become simple, and even those who are unfamiliar with breeding can easily breed live fish. Undecomposed matter in the water can be removed by periodically cleaning the filter and remover.

  Since no power source is arranged in the water tank, air is injected from the air stone from the air compressor installed outside the tank, so no frustrating motor pump is required and the water temperature rises due to the heat generated by the motor pump. There is no fear that it will be higher than the appropriate temperature range for seafood and damage raw fish.

  Since the water splash prevention lid 27 is placed on the upper part of the undecomposed product remover, air containing water from the vent hole 24 does not scatter and salt dripping due to salt water discharged from the mixed solution outlet can be prevented. . Since this water purification apparatus is compact and has a high treatment capacity, it can be applied to a small water tank and can be used for various purposes, and is superior in cost to conventional apparatuses.

  Hereinafter, embodiments of a water purification apparatus according to the present invention will be described with reference to the drawings. In addition, although it demonstrates mainly in relation to the water purification apparatus for live fish, it is the same in principle also about other sewage purification.

  In the microorganism culture chamber 1 shown in FIG. 1, an outlet side partition plate 17A provided with a water intake cylinder 6 equipped with a cylindrical filter 11, an air inlet 7, a partition plate 4, a small hole 8B and a cut 18 is provided. And an air vent cylinder 5 is provided. First, the water from which the dust is physically filtered by the filter 11 enters the water intake cylinder 6 through the small hole 8A in the water intake cylinder. Water spreads from the notch 15 to the microorganism culture chamber 1 and moves through the connection pipes 19 installed in the partition plate 4 to each room partitioned by the partition plate 4.

  The plurality of partition plates 4 have an action of not retaining water, an action of preventing unnecessary movement of a filter medium (not shown) inserted from the bottom lid 21, and an action of stabilizing the water surface. It is not limited and can be increased or decreased as necessary. Here, since the connection pipe 19 passes through each partition plate 4 alternately on the left and right, the water moves in a zigzag manner in each room.

  The entrance A chamber and the exit C chamber of the microorganism culture chamber 1 are used as basic parts, the intermediate B chamber is used as a subordinate part, and at least a basic part may be used or any number of subordinate parts may be connected as required (FIG. 1). A filter medium on which artificially cultured microorganisms are implanted is inserted from the bottom lid 21. When a ceramic based on a basic substance is used as a filter medium, even if nitric acid is accumulated, PH is lowered by the basic component of the ceramic and the activity of aerobic bacteria can be increased.

  As shown in FIG. 2, diagonal notches 18A, 18B and 18C are made in the partition plate, and small holes 8C, 8D and 8E are provided. Arrange the partition plates so that the diagonal cuts alternate. When the water passes through the outlet side partition plate 17A, the sewage is purified by microorganisms. Air is sent from the air compressor installed outside the tank to the air stone 10 through the air tube 9, and fine bubbles rise from the air stone 10 to raise the water, so that the purified water is connected to the air vent connection part 13. It returns to the water tank through the extraction cylinder 5. It is also possible to eject oxygen microbubbles (0.1 micrometer) generated by high pressure ultrasonic waves from an air compressor.

  In FIG. 3, water rises while containing bubbles generated by the air stone 10, and the mixed liquid of water and air is discharged from the mixed liquid outlet 12 as indicated by an arrow 70. Water flows back to the water tank from the drain hole 25 in the direction of the arrow 80, but air rises through the vent hole 24. At this time, a part of the water rises together with the air, passes through the vent hole 24 and collides with the water splash prevention lid 27 as indicated by an arrow 50. The undegraded product 26, which is an organic waste product and proteinaceous matter in the water, falls as indicated by an arrow 60 and is collected and removed by a remover 23 fixed by a fastener 22, and water and air are removed by an arrow 90. So that it is discharged from the gap to the outside.

  By covering the water splash prevention lid 27, air containing moisture from the vent hole 24 is not scattered, and salt dripping due to salt water discharged from the mixed solution outlet can be prevented. In addition, since the compressed air from the air compressor installed outside the tank is used as the power source, not only the conventional equipment such as a motor pump that is resistant to water inside the tank is required, but also the water temperature by driving the pump. Can be prevented from rising.

  A side view of the entire apparatus is shown in FIG. In the upper part of the water surface of the microorganism culture chamber 1, an air reservoir 20 is formed by air introduced from the air tube 9 through the air inlet 7 to promote the propagation of aerobic microorganisms inside. The volume of the air reservoir 20 can be adjusted to suit microorganisms by changing the degree of opening of the cut 18. The inlet side partition plate 17B attached to the water intake cylinder 6 side and the outlet side partition plate 17A attached to the air vent cylinder 5 side both prevent entry of the filter medium.

  A notch 15 is provided at the lowermost part of the water intake tube 6 inserted into the microorganism culture chamber 1 from the water intake tube connection part 14. If the outlet of the water intake cylinder 6 is higher than the notch 18 of the outlet-side partition plate 17A, air may flow backward, so that the notch 15 is below the boundary between the air reservoir 20 and the water surface. .

  If it installs with the form as shown in FIG.6 and FIG.7, it can utilize also for a large sized aquarium. Specifically, when water is pulled up as indicated by an arrow 100 by the bubbles 33 coming out of the air stone 10, the mixed liquid of water and air is pulled up from the lower part to the upper part of the microorganism culture chamber 1 as indicated by an arrow 110. The air is discharged from the uppermost exhaust hole 34, and the water naturally flows downward and returns to the tank because the inlet to the drain tank 36 is below the water surface 28. The air reservoir 20 is formed by the air reservoir partition plate 35, and the water level can be kept constant. Considering the fact that it is a large fish tank for live fish, it is preferable to make the foam 35 coming out of the air stone 10 stronger, and the remover 23 is not necessarily required. When oxygen is directly injected into the aerobic biological filtration tank, the filtration performance is dramatically improved, and high-density breeding is possible even in a closed circulation tank. In this way, organic waste generated from metabolites such as dropout scales and excrement of fish and shellfish, or residual feed can be removed only by periodically cleaning the filter and remover.

  Aquarium water can also be introduced into the anaerobic microorganism chamber 37 from the water supply port 38 to the lower part of the chamber, and can be introduced into the aerobic microorganism culture chamber 1 through the anaerobic microorganism chamber 37 (FIG. 6). In this case, water can be branched into the anaerobic microorganism chamber separately from the introduction into the aerobic microorganism chamber by branching behind the water intake cylinder 6 to which the filter 11 is attached.

  A performance test of the water purification apparatus of the present invention was conducted using a small water tank of about 5 liters for viewing saltwater fish (see FIG. 5). When air is released from the air stone from the air compressor installed outside the tank, water moves from the drainage hole to the water tank, water and air containing undecomposed matter move upward from the vent hole, and water and air are water. Undecomposed matter, such as organic waste, collided with the splash prevention lid and collected in the remover.

  Since the water in the aquarium circulates, the water contaminated with fish excrement and food in the aquarium is physically filtered by a filter, and the water that enters through the small hole of the water intake tube is introduced into the microorganism culture chamber through the cut. It was. The filter medium filled in the purified microorganism culture chamber was a basic material ceramic.

  By simply cleaning the filter and remover regularly without exchanging water at all, the shrimp, crab, goby, and flounder fry of about 1 to 2 cm were raised, and all grew well for 3 months. Confirmed that. With saltwater fish, the smaller the tank, the harder it is to breed, and with existing breeding methods, it is extremely difficult to keep saltwater fish for a long time in a small tank of about 5 liters. It didn't rot.

  Although the water purification apparatus of the present invention has been described with respect to a water purification apparatus suitable for a small aquarium for fish and shellfish breeding, it can be installed in various containers such as buckets and plastic containers. Moreover, since the equipment is downsized, it can be applied to small-scale shops, restaurants, and supermarket live fish tanks.

  In addition, the present invention is not limited to the above-described embodiments, examples, and water purification devices in industrial applicability, and various modifications can be made within the scope of the contents described in the claims. Variations are possible and the present invention includes all of these.

It is a perspective view of the whole structure of the Example of the water purification apparatus concerning this invention. It is a perspective view of the Example of the container of the microorganism culture chamber of the water purification apparatus concerning this invention. It is an enlarged view of the air bleeding cylinder and its periphery in the said Example. It is a side view of the Example of the water purification apparatus concerning this invention. It is the schematic diagram of the Example which applied the water purification apparatus concerning this invention to the small-sized ornamental water tank. It is a perspective view of the Example which applied the water purification apparatus concerning this invention to the large sized water tank. It is sectional drawing of the Example which applied the water purification apparatus concerning this invention to the large sized water tank. It is a side view which shows the water purification apparatus installed in the conventional aquarium water tank.

Explanation of symbols

1, 1A, 1B, 1C, 1D Microorganism culture chamber 2 Microbe culture chamber side plate 3 Microorganism culture chamber bottom plate 4 Partition plate 5 Air vent cylinder 6 Water intake cylinder 7 Air inlet 8A, 8B, 8C, 8D, 8E Small hole 9 Air tube 10 Air stone 11 Filter 12 Mixture outlet 13 Air venting cylinder connecting part 14 Water intake cylinder connecting part 15 Notch 16 Fish 17A Exit side partition plate 17B Inlet side partition plates 18, 18A, 18B, 18C Notch 19 Connection pipe 20 Air reservoir 21, 21 A, 21 B, 21 C, 21 D Bottom lid 22 Retainer 23 Remover 24 Vent hole 25 Drain hole 26 Organic waste 27 Water splash prevention lid 28 Water surface 29 Water tank 30 Sand 31 Hole 32 Water flow 33 Bubble 34 Exhaust hole 35 Air reservoir partition plate 36 Drain port 37 Anaerobic microorganism culture chamber 38 Water supply port 50 Mixed liquid flow 60 Organic waste movement 70, 80 Water flow 90 Air flow 100 Water flow 1 0 mixture flow of

Claims (5)

  A filter medium is arranged by providing a plurality of partition plates in the microorganism culture chamber of the water purification apparatus, and a water intake cylinder with a filter attached to the microorganism culture chamber and an air vent cylinder for introducing air through an air stone. A water purifier for fish and shellfish, characterized in that an upper part of the air vent cylinder is equipped with a remover for removing undecomposed matter and a water splash prevention lid on the remover, and air or oxygen is introduced into the lower part of the microorganism culture chamber. apparatus.   The water purification apparatus for seafood according to claim 1, wherein the microorganism culture chamber is installed in a lower part of a water tank, and a partition plate is arranged so that the lower cuts are alternately arranged.   The water purification apparatus for seafood according to any one of claims 1 to 2, wherein a cut is provided in a lower portion of the water intake tube.   The apparatus for purifying water for fish and shellfish according to claim 1, wherein the microorganism culture chamber is installed at a side of a water tank, and an upper plate provided with a partition plate is provided in the microorganism culture chamber.   The water purification apparatus for seafood according to any one of claims 1 to 4, wherein microbubbles of oxygen are ejected from a lower part of the microorganism culture chamber.

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