JPH0538614Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to a device for purifying seawater in an aquarium contaminated with fish and shellfish excrement, and in particular, it aims to improve the purification ability naturally contained in seawater. The present invention relates to a microbial purification device for live fish that uses microorganisms to purify seawater contaminated with excrement.

[Conventional technology] With the recent increase in the luxury of eating habits, the demand for eating fresh seafood has increased. It has become an important issue to transport fish and shellfish in a way that prevents them from weakening as much as possible during transport. Various devices and methods have been proposed to achieve this goal.

By the way, in order for fish and shellfish to survive for a long time in an aquarium placed on land or in an aquarium used for transporting live fish, it is necessary to maintain a constant temperature in the aquarium, maintain a constant dissolved oxygen concentration in the water, and It is generally known that the following three elements are required as a minimum: constantly purifying the water in the aquarium.

Among these, constantly purifying the water in the aquarium is a problem in fixed aquariums and aquariums used for transporting live fish, where fresh water cannot be supplied. let me,
During the circulation, a purifier is used to purify the water in the aquarium. Various purification devices have been devised to purify this water.

[Problem that the invention attempts to solve]

However, conventional purification devices generally use a filtration mechanism to remove excrement dissolved in water, and the filtration mechanism must have a high performance to remove the excrement sufficiently. However, purification devices equipped with high-performance filtration mechanisms are expensive, have complex structures, and have various problems such as difficulty in miniaturization.

By the way, it is known that various microorganisms live in natural seawater, and that various substances flowing into the sea are decomposed and purified by the action of these microorganisms.

In these natural seawaters, there are also microorganisms that decompose and purify the excreta excreted by fish and shellfish, and the excreta in the seawater are constantly purified by these microorganisms. When the amount of excrement increases, these microorganisms multiply and their ability to decompose and purify the excrement increases, and when the amount of excrement decreases, their ability to decompose and purify the excrement decreases, resulting in an overall balance. The laws of nature are starting to work.

This invention was devised to solve the problems mentioned above, and its purpose is to utilize microorganisms that naturally exist in seawater and have purification abilities. In addition to purifying seawater contaminated with excrement, it also prevents deterioration of water flow during purification and prevents the deterioration of purification ability.
Moreover, it is an object of the present invention to provide a microbial purification device for live fish that can accomplish this with a simple device.

[Means for solving problems]

In order to achieve the above object, this invention arranges a plurality of hollow filter bodies in the vertical direction inside a sealed container, and has an inner diameter of 5 to 50 mm on the side circumferential surface of each filter body, which communicates with the inside of the filter body. A large number of 20 μm water holes are formed to form an inlet for natural seawater to flow into the container, and the water pressure on the outer surface of the filter is controlled to prevent deterioration of water flow due to clogging of the side circumferential surface of the filter. A pressure pump is installed on the upstream side of the inlet to raise pressure from the inside of the hollow part, and seawater that has passed through the hollow part of each filter body fills the hollow part of each filter body to prevent water flow from deteriorating due to a decrease in pressure difference between the inside and outside of the hollow part of each filter body. A seawater outlet is formed at the lower end of the filter, and the outer surface of the side circumferential surface of the filter is coated with a water-permeable fiber layer, to which microorganisms naturally present in seawater and having a purifying ability are attached.

Here, as a preferred embodiment, a large number of inlets consisting of small holes are evenly formed on the upper circumferential surface of the container.

[Effect]

This invention having the above configuration operates as follows.

That is, seawater contaminated with the excrement of fish and shellfish in the aquarium is forced into the sealed container by a pressure pump, and the water pressure inside the sealed container is increased. At this time, since the pressure pump increases the water pressure inside the container, the water pressure on the outer surface side of the filter body is increased from the inside of the hollow part, thereby preventing water flow deterioration due to clogging of the side peripheral surface of the filter body.

When the seawater pumped into the container passes through the many holes formed on the surface of the filter and flows into the hollow part of the filter where the pressure is low, microorganisms naturally present in the seawater that have purification ability are absorbed. It adheres to the outer surface of the filter body, which is covered with a water-permeable fibrous layer. Then, the microorganisms attached to the outer surface of the filter constantly decompose and purify the contaminants in the seawater passing through the water holes, and the purified seawater passes through the water holes and flows into the hollow part of the filter.

At this time, since the outlet is formed at the lower end of the filter, the purified seawater that has flowed into the hollow part of the filter is immediately discharged from the outlet at the lower end without filling the hollow part. . The purified seawater is then returned to the aquarium.

〔Example〕

This invention will be described in more detail below based on embodiments shown in the drawings.

Here, FIG. 1 is a longitudinal cross-sectional view of a microbial purification device for live fish, FIG. 2 is a cross-sectional view taken along the line A-A in FIG. 1, and FIG.
The figure is a partially cutaway perspective view of the filter, and FIG. 4 is a schematic system diagram of the live fish survival device.

In the figure, a live fish survival device 1 is a device for keeping fish and shellfish alive for a long time in an aquarium placed on land or an aquarium for transporting live fish, and includes an aquarium 2, a filtration device 3, a pressure pump 4, and a microbial purification device. 5, an ammonia adsorption device 6, an ozone generator 7, and a flow path 8 connecting these.

The tank 2 is filled with natural seawater and contains marine fish that can survive for a long time. Natural seawater contains microorganisms that have purifying abilities. Each fish swims slowly in the aquarium 2, but if the fish are to swim at a constant speed, for example, a circulating type aquarium 2 is used. Excrement excreted by each fish is dissolved in the seawater in the aquarium 2. A drain port 2a is provided at the bottom of the water tank 2.

One end of a flow path 8 is connected to the drain port 2a, and the other end of the flow path 8 on the downstream side is connected to the inlet port 3a of the filtration device 3. The filtration device 3 is a device for removing pollution from seawater, and major pollution from seawater is removed here. One end of a flow passage 8 is connected to the discharge port 3b of the filtration device 3, and the other end of this flow passage 8 is connected to a pressure pump 4 disposed on the downstream side.

The pressure pump 4 pumps the seawater from which contamination has been roughly removed by the filtration device 3 to the microorganism purification device 5 at a predetermined pressure. This seawater contains contaminants that were not removed by the filtration device 3. Further, this pressure pump 4 and the microorganism purification device 5 located downstream thereof are connected by a flow passage 8. and,
Seawater pumped by the pressure pump 4 flows into the microbial purification device 5 through the inlet 5a.

The microorganism purification device 5 purifies seawater contaminated with excrement by using microorganisms that are naturally contained in seawater and have a purification ability, and includes a container 9 whose interior is airtight and a container 9 disposed within the container 9. It is mainly composed of a plurality of hollow filter bodies 10.

The container 9 is a cylindrical pressure container.
An introduction passage 9a is formed on the upper outer circumferential surface, and an interior 9b is formed in a sealed manner. The introduction passage 9a is formed so as to circulate once around the outer peripheral surface of the container 9, and the introduction port 5a is formed on the outer surface of this introduction passage 9a. Introduction passage 9a and container 9
Inflow ports 11 consisting of a large number of small holes are uniformly formed in the entire area of the upper circumferential surface that forms the boundary with the interior 9b.

The inlet 11 consisting of a large number of small holes is connected to the introduction passage 9.
The seawater that has flowed into the introduction passage 9a flows approximately uniformly into the interior 9b of the container 9 from the inlet 11. At this time, since a large number of inflow ports 11 are formed evenly over the entire upper circumferential surface of the container 9, the inflow ports 11 flow into the inside 9b of the container 9 under pressure from the pressure pump 4, and the inside 9b flows into the inside 9b of the container 9 under pressure. A predetermined water pressure, for example 0.3 to 1.5 Kg/cm ² .

A plurality of filter bodies 10 are arranged concentrically in the interior 9b of the sealed container 9. Each filter body 10 is formed into a hollow cylindrical shape, and each filter body 10 is arranged vertically inside the container 9 inside 9b, that is, both ends of the cylindrical shape
It is in contact with the top and bottom of the. An outflow port 12 is formed at the lower end of the hollow interior 10a of each filter body 10, that is, at a location that abuts against the bottom surface of the interior 9b.

Incidentally, a large number of water passage holes 10c having an inner diameter of 5 to 20 μm are formed throughout the side circumferential surface 10b of the filter body 10. Through this water hole 10c, the filter body 10
The inside 10a of the hollow part of the container 9 and the inside 9b of the container 9, which is the outside of the filter body 10, communicate with each other. Further, the outer surface of this side circumferential surface 10b is coated with a water-permeable fiber layer 10d. Microorganisms naturally present in seawater and having a purifying ability tend to adhere to this fiber layer 10d, and the attached microorganisms decompose and purify the pollution of excrement dissolved in the seawater. Furthermore, the water-permeable fiber layer 10d and the water holes 10c have a filtering effect on seawater pollution, and the pollution adheres to the surface of the fiber layer 10d and is decomposed and purified by microorganisms.

A seawater outflow passage 13 is provided below the bottom surface of the interior 9b of the container 9. The outlet 12 is connected to the outlet passage 13, and the purified seawater in the hollow portion 10a of the filter body 10 flows down the outlet 12 and into the outlet passage 13.

Further, an ammonia adsorption layer 6 is provided above the downstream side of the outflow passage 13. The ammonia adsorption device 6 is a device that adsorbs ammonia nitrogen in seawater and ammonia nitrogen generated when microorganisms in seawater decompose and purify contaminants in the microbial purification device 5. In the ammonia adsorption device 6, for example, maifan stone, zeolite, ion exchange resin, etc. are used as materials for adsorbing ammonia nitrogen, and these constitute a layer. In this embodiment, the ammonia adsorption device 6 and the microbial purification device 5 are integrally constructed with an outflow passage 13 interposed therebetween.

An ozone generator 7 is connected to the downstream side of the ammonia adsorption device 6 via a flow path 8 . The ozone generator 7 has a function of supplying oxygen to purified seawater. The ozone generator 7 is connected to the water tank 2 via a flow path 8, and the ozone generator 7
The seawater that has passed through is circulated into the aquarium 2.

Next, the effects based on the configuration of the above embodiment will be explained below.

The pressure pump 4 works to circulate and purify the seawater in the tank 2.
This is done by activating the . That is, when the pressure pump 4 is operated, seawater containing pollution is discharged from the drain port 2a at the bottom of the water tank 2. The seawater containing pollution is sucked by the pressure pump 4, flows downstream in the flow passage 8, and enters the filtration device 3 from the inlet 3a, where the rough pollution in the seawater is removed. removed. Seawater filtered by the filtration device 3 is discharged into the flow path 8 from the drain port 2a. The seawater further flows downstream through the flow path 8 and is sent to the microbial purification device 5 via the pressure pump 4.

Seawater flows into the introduction passage 9a from the introduction port 5a of the microorganism purification device 5, and while circulating inside the introduction passage 9a, it enters the container 9 from the inlet 11 of a large number of small holes formed on the side surface of the upper part of the container 9. It flows into the interior 9b.
Since the seawater is sent out at a constant pressure by the pressure pump 4, the water pressure inside the container 9 9b becomes high. The seawater that has flowed into the interior 9b of the container 9 is sucked into each of the filter bodies 10 arranged in the interior 9b.

That is, the side circumferential surface 10b of each filter body 10 has a water passage hole 1.
0c are formed in large numbers, and the inside 9b of the container 9 and the inside of the hollow part 10a of each filter body 10 are in a state of communication, and the water pressure in the hollow part 10a of each filter body 10 is higher than the water pressure in the inside 9b of the container 9. This is because it is small. For this reason, seawater containing pollution is removed from each filter body 10.
attempts to pass through the water passage hole 10c of the side circumferential surface 10b.

By the way, the water-permeable fiber layer 10 is provided on the side peripheral surface 10b.
d is coated on the fiber layer 10d, and microorganisms naturally present in seawater and having a purifying ability adhere well to the fiber layer 10d. The attached microorganisms then decompose and purify the pollution in the seawater. At this time, ammonia is produced during the decomposition and purification process. In this way, the seawater containing pollution is purified by microorganisms when passing through the water passage holes 10c on the side surface 10b of each filter body 10,
Only purified seawater passes through the water passage holes 10c and flows into the hollow portions 10a of each filter body 10.

The purified seawater that has flowed into the hollow portion 10a of each filter body 10 flows into the outflow passage 13 from the outflow port 12, flows down the outflow passage 13, flows into the ammonia adsorption device 6, and flows into the ammonia adsorption device 6. While passing through the seawater, ammonia nitrogen in seawater is adsorbed.

The seawater from which ammonia nitrogen has been removed flows through the flow path 8.
The ozone flows down towards the ozone generator 7, where oxygen is supplied to the seawater and ammonia nitrogen and fine impurities remaining in the seawater are also removed by the ozone. Ru.

In this way, the seawater that has been completely purified and supplied with oxygen flows down the flow path 8 and returns to the aquarium 2, allowing fresh seawater to be supplied to the aquarium 2, and for the production of seafood. It functions to enable long-term survival.

It should be noted that this invention is not limited to the above embodiments, and it goes without saying that various modifications can be made without departing from the spirit of this invention. For example, in the above embodiment, the introduction passage 9a is formed on the upper outer peripheral surface of the container 9, and a large number of inlets 11 consisting of small holes are evenly formed on the upper peripheral surface of the container 9. However, instead of the large number of inlets 11 made up of the introduction passage 9a and the small holes, an inlet 11 of a normal size may be formed on the side circumferential surface of the container 9.

[Effect of idea]

As is clear from the above description, according to the microbial purification device for live fish according to this invention, since the outer surface of the side surface of the filter body disposed inside the container is covered with a water-permeable fiber layer, the filter body Microorganisms naturally present in seawater and having purifying ability tend to adhere to the outer surface. The attached microorganisms decompose and purify the polluted seawater that passes through the water holes formed on the side surface of the filter, making it possible to purify the seawater as it passes through the water holes of the filter. can. Furthermore, as the amount of excrement in seawater increases, the microorganisms on the surface of the filter will multiply according to the laws of nature, and the decomposition and purification ability will increase, making it possible to achieve stable purification at all times.

Coupled with this effect, since the water pressure inside the container is increased by the pressure pump with the inlet provided on the upstream side, the water pressure on the outer surface of the filter body can be higher than that in the hollow part, and moreover, Since the outlet is formed at the lower end, the purified seawater that flows into the hollow part of the filter is immediately discharged from the outlet at the lower end without filling the hollow part, increasing the water pressure inside the hollow part. can be prevented. Through these synergistic effects, it is possible to maintain a high water pressure difference between the inside and outside, and by using the high water pressure difference, the purified seawater can be forcibly passed through the side surface of the filter body. Water flow deterioration due to surface clogging can be prevented.

In this way, seawater is purified using microorganisms that are naturally present in seawater and have purifying abilities, so there is no need for complicated management such as storage of microorganisms, and there is no need to incur special costs for preparing microorganisms. In addition, it has extremely practical and beneficial effects, such as preventing deterioration of water flow during purification, preventing a decline in purification ability, and achieving purification with a simple structure. .

[Brief explanation of the drawing]

The drawings show an embodiment of the microbial purification device for live fish according to this invention, in which FIG. 1 is a longitudinal sectional view of the microbial purification device for live fish, and FIG. 2 is a cross-sectional view taken along line A-A in FIG.
3 is a partially cutaway perspective view of the filter body, and FIG. 4 is a schematic system diagram of the live fish survival device. Explanation of symbols, 1...Live fish survival device, 2...Aquarium, 2a...Drain port, 3...Filtering device, 3a...
Inflow port, 3b...Discharge port, 4...Pressure pump, 5
...Microbial purification device, 5a...Inlet, 6...Ammonia adsorption device, 7...Ozone generator, 8...
Distribution path, 9...container, 9a...introduction path, 9b...
... Inside, 10 ... Filter body, 10a ... Inside hollow part,
10b...Side peripheral surface, 10c...Water hole, 10d...
...Fiber layer, 11...Inflow port, 12...Outflow port, 1
3...Outflow passage.

Claims (1)

[Claims for Utility Model Registration] 1. A plurality of hollow filter bodies are arranged vertically inside a sealed container, and a water passage with an inner diameter of 5 to 20 μm communicates with the inside of the filter body on the side circumferential surface of each filter body. A large number of holes are formed to form an inlet for natural seawater to flow into the container, and the water pressure on the outer surface of the filter body is increased from the inside of the hollow part in order to prevent deterioration of water flow due to clogging of the side circumferential surface of the filter body. A pressure pump is installed on the upstream side of the inlet, and in order to prevent water flow from deteriorating due to the seawater that has passed filling the hollow part of each filter and reducing the pressure difference between the inside and outside, seawater is placed at the lower end of the hollow part of each filter. Microbial purification for live fish, characterized in that the outer surface of the side circumferential surface of the filter body is coated with a water-permeable fiber layer, to which microorganisms naturally present in seawater and having a purifying ability are attached. Device. 2. The microorganism purification device for live fish according to claim 1, wherein a large number of inlets consisting of small holes are evenly formed on the upper circumferential surface of the container.