JP2023109012A - Parallel type circulation and filtration culture apparatus - Google Patents

Abstract

To solve such problems that a seafood culture apparatus which circulates water in a fish-breeding tank needs a device for processing drain water to circulate the drain water to the fish-breeding tank in addition to a device for making water flow, and a drain water processing device is apart from a fish-breeding device, a shipment tank where fish to be shipped is placed for rest is separately built and the work for moving the fish before shipment from the fish-breeding tank has the large burden.SOLUTION: There is provided a seafood culture apparatus in which a shipment tank and a device of a water processing part are formed in parallel to each other as one water tank body with a step in a fish-breeding tank, the fish-breeding tank and the shipment tank have individual circulation flows, and water can be circulated in the entire water tank body including the water processing part.SELECTED DRAWING: Figure 1

Description

In the present invention, an adult fish shipping tank is connected in parallel to a circulating fish culture tank, and the water that is supplied to the shipping tank in which the adult fish are cured before shipping is supplied to the parallel fish culture tank in a free flowing manner. The present invention relates to a parallel circulating filtration aquaculture apparatus and aquaculture method, in which waste water from tanks is purified and circulated to parallel fish culture tanks.

As described in Patent Document 1, for example, the circulating fish tank supplies water pumped up by a pump to the fish tank, purifies water contaminated with fish droppings, etc., and uses the purified water for fish farming. It is returned to the tank and circulated.
Adult fish that have grown to a size of about 2.5 kg/fish that can be shipped are transferred to a tank called a shipping tank that is prepared separately as needed, supplied with fresh water, and cured for a certain period without feeding before shipping. do.
Therefore, the circulating fish farming tank and the shipping tank for curing adult fish before shipping are completely different things, and the locations are far apart. It is discharged as it is and is wasted.

Japanese Patent No. 6858996

If the annual shipping volume of fish farming is only a few tons, the structure and water volume of the shipping tank are not so much of a problem. If necessary, the amount of water discharged from the shipping tank and the cost are enormous, and management cannot ignore it.
An object of the present invention is to effectively reuse the water discharged from the shipping tank and to provide a parallel circulation filtration aquaculture apparatus suitable for unprecedented large-scale aquaculture.
In addition, in order to move the fish from the fish farming tank to the shipping tank, it takes time and effort to scoop the fish with a net, transfer it to a container, move the container to the shipping tank, and transfer it to the shipping tank. The fish can be moved by chasing it in the water.

In order to solve the above problems, the present invention has taken the following technical measures.

(1) A fish and shellfish aquaculture apparatus, whose plan view follows a map and shows a shipping tank, a fish farming tank, and a water treatment unit with stepped water depths from the west side, which is upstream of one long tank body in the east-west direction. are formed in parallel so that
The shipping tank is supplied with water from an external pump to the north side of the circuit channel surrounding the north, west and south sides of the shipping tank. circulating the water discharged to the south side of the circuit water channel to the air lift to generate a circulation flow in the shipping tank;
The fish farming tank is partitioned into a plurality of sections in the east and west, and a water supply channel is formed on the north side of the fish farming tank, and a drainage channel is formed on the south side. and the east side extends to the oxygen decomposition device described later in the water treatment section, and the east end of the drainage channel communicates with the water treatment section,
The water treatment unit includes a drum filter for filtering large dust from the south side, a biological treatment tank for filtering fine dust, a _C02 degassing tank, a treated water tank, and an oxygen dissolving device. Oxygen is dissolved in the water pumped from the end-of-life tank to the oxygen dissolving device, and discharged to flow into the water supply channel on the north side of each of the fish farming tanks. flows into each tank from the north side of each fish farming tank across the partition wall, and overflowing water flows out to the drainage channel on the south side, is filtered by the drum filter, and circulates to the water supply channel. Parallel circulation filtration aquaculture equipment.

(2) A slide gate is formed on the side wall facing the circuit channel of each shipping tank and the partition wall facing the water supply channel of each fish farming tank, and the slide gate is opened and closed for each tank to individually The parallel circulation filtration aquaculture apparatus according to (1), which is configured to be able to drain water.

(3) In the parallel circulation filtration aquaculture apparatus, the shipping tank is formed at one end in the longitudinal direction of the water tank body, and a plurality of shipping tanks are formed in parallel in the longitudinal direction. A water inlet channel is formed in a water inlet channel extending in the longitudinal direction of the water tank body facing the side wall of the end face, and a water inlet channel is formed in a direction perpendicular to the water inlet channel. A circuit channel is formed toward one end in the longitudinal direction of the water tank body and surrounds the two outer sides of the shipping tank from the water reservoir portion, and the terminal end of the circuit channel is the drainage channel in the fish tank. According to (1) or (2), the side walls of the plurality of shipping tanks, which are formed so as to be able to communicate with each other and face the circuit water channel, are lower in height than the side walls facing the water intake channel. Parallel circulation filtration aquaculture equipment.

ADVANTAGE OF THE INVENTION According to this invention, the following effects are exhibited.

In the invention described in (1) above, the shipping tank, the fish farming tank, and the water treatment section are arranged in parallel so that the water level of the elongated water tank body is lowered stepwise from the upstream side in a plan view, so that the natural flow is maintained in the water tank. The water generated in the body and purified in the water treatment unit is pumped up and discharged to the water supply channel to the fish tank, so that a flowing circulation flow like river water is generated in the fish tank and cools the water. Suitable for culturing trout that live in clear streams.
The shipping tank for curing the fish before shipping is always filled with fresh, cold well water, and a circulating water flow is generated in the shipping tank alone. be nurtured. Since excess water is supplied to the fish tank without being discarded, the amount of water circulating in the fish tank can be increased.
Also, the water in the shipping tank can be purified in the water treatment units arranged in parallel without being discarded or purified separately.
Since a plurality of fish farming tanks and shipping tanks are formed in parallel in the downstream direction, individual fish farming tanks and shipping tanks can be easily managed individually, and shipping workability is excellent.

In the invention described in (2) above, slide gates are formed on the side wall facing the circuit water channel of each shipping tank and the partition wall facing the water supply channel of each fish farming tank, and slide each tank. Since the gate can be opened and closed so that the water can be drained individually, the tank can be drained and cleaned individually to prepare for the next step.

In the invention described in (3) above, a circuit water channel is formed on two sides of the shipping tank, and flowing water is supplied to the shipping tank by an air lift formed at the tip of the circuit water channel, and the water in the shipping tank is lowered. Since the water flows from the side wall to the circuit water channel, is circulated to the air lift, and is circulated to the shipping tank again by the air lift, the amount of water pumped up by the pump can be reduced. In addition, since the surplus water that has entered the circuit waterway passes through the drainage channel of the fish tank, is purified in the water treatment section, and is circulated to the fish tank, the water is not wasted.

1 is a plan view of a parallel circulating filtration aquaculture apparatus of the present invention; FIG. FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1; FIG. 2 is a vertical cross-sectional view of an air lift portion in FIG. 1;

One embodiment of the present invention will be described based on the drawings. FIG. 1 is a plan view of the parallel circulation filtration aquaculture apparatus of the present invention, and FIG.
In the figure, the parallel circulation filtration aquaculture apparatus 1 is formed as an elongated integral water tank body 2 in which three tanks, a shipping tank 3, a fish farming tank 4, and a water treatment section 5, are deepened stepwise from the upstream side on the left side of the drawing. The environment is ideal for trout, which live in cold water, but it is also used to farm other fish and shellfish.

For convenience of explanation, the water tank body 2 will be described with the front side as the south side, the front side as the north side, the upstream left side as the west side, and the right side as the east side.
The size of the water tank body 2 is, for example, about 49.35 m in length from east to west and about 17.75 m in width from north to south. 3 sections are set in parallel as , and 25.9 m on the east side is set as a fish farming tank 4 with 7 sections in parallel, and the boundary between the fish farming tank 4 and the shipping tank 3 is partitioned by a partition wall 3A. The number of plots is increased or decreased as appropriate according to the amount of aquaculture.

On the north side of the shipping tank 3, a blind alley-shaped water intake channel 6B is formed on the south side through a partition wall 6 that separates the water injection channel 6A. are formed with slide gates 3C and 3C, respectively.
A fish removal net 6C is stretched between the water injection channel 6A and the partition wall 3A so as to surround an air lift 7, which will be described later.

An air lift 7 is arranged on the north side of the partition wall 6 on the north side of the intake channel 6B. The distance between the partition wall 6 and the north side wall 3B of the shipping tank 3 is, for example, 1 m wide, and the running water entering from the water injection channel 6A moves westward and flows through the entire shipping tank 3 beyond the side wall 3B. It is configured to be supplied with water as

The plurality of shipping tanks 3 are arranged side by side, which has the advantage that the number of shipping fish can be divided into small pieces and can be shipped for each tank at the time of shipping, and the fish to be shipped next is individually cleaned after shipping. There are advantages to being able to

On the west side of the air lift 7 is provided a water reservoir 9 into which water is injected from a pump 8 outside the water tank body 2. A circuit water channel 10 having a width of, for example, about 1 m is formed on the south and west sides of the shipping tank 3 and the water reservoir 9 Flowing water overflowing from the south side wall 3F of each shipping tank 3 enters this circuit water channel 10 and flows to the air lift 7, and excess water flows from the communication pipe 3E to the drainage channel on the south side of the fish farming tank 4. After passing through 4C, it moves to the water treatment unit 5 and is purified.

That is, conventionally, since the shipping tank 3 is installed separately from the fish farming tank 4, the water in the shipping tank 3 that has become dirty due to curing of the fish to be shipped has been wastefully drained.
In addition, a circuit water channel 10 is provided in two directions, south and west, of the shipping tank 3 at one end of the water tank body 2, and the circuit water channel 10 is connected to the air lift 7 via the water reservoir 9, so that the water in the shipping tank 3 can be shipped. The tank 3 can be circulated independently, and the amount of water pumped up by the pump 8 can be reduced.

In addition, by forming a dust reservoir recessed portion 9A on the west side of the water reservoir 9 just before the air lift 7 and covering the entire width of the water reservoir 9 as necessary, a large mass of fish feces overflowing from the shipping tank 3 and flowing through the circuit water channel 10 can be removed as dust. It is possible to store the waste in the reservoir recess 9A and prevent it from returning to the shipping tank 2 and being circulated.

The air lift 7, as shown in the longitudinal section in FIG. 3, forms a groove 7A long in the north-south direction in FIG. A partition plate 7B is vertically installed from the upper part to near the bottom of the groove, and a water inlet portion 7C and a water outlet portion 7D are formed before and after the partition plate 7B. is opened near the bottom of the

By vigorously ejecting compressed air from the air pipe 7C, the air bubbles rise vigorously, thereby pushing the water in the water discharge portion 7D of the groove 7A shown in FIG. The water flowing into each shipping tank 3 flows down from the partition wall 3F, which is set to have a low water level on the south side, into the circuit water channel 10, is circulated toward the air lift 7, and part of the water flows into the communication pipe 3E is discharged to the drainage channel 4C on the south side of the fish farming tank 4 and enters the water treatment section 5.

In the shipping tank 3, the water pumped up by the pump 8 from the well outside the water tank body 2 flows by the air lift 7, and enters the shipping tank 3 from the water intake channel 6B over the side wall 3B. The water that has entered the shipping tank 3 flows over the south side wall 3F, falls into the circuit waterway 10, and reaches the air lift 7, where it is circulated. Cleansed and nurtured inside and out.

The water depth of the shipping tank 3 is formed to be, for example, 1.5 m, and the water depth of the following fish breeding tank 4 is set to, for example, 2.1 m, which is one step deeper and the water surface is lower.
The depth of the subsequent water treatment section 5 is set to be even deeper, for example, 2.5m to 3.4m. The water in the water tank body 2 flows from the shipping tank 3 to the fish farming tank 4, the drainage channel 4C, and the water treatment section 5 due to the drop.

As a result, the water in the shipping tank 3 is allowed to flow to the deep fish tank 4 due to the difference in the water surface, and the water treatment unit 5 is lowered to facilitate the flow of waste water.
On the south side of each shipping tank 3 and each fish farming tank 4, drain pipes 3D and 4H that can drain water individually to the outside are arranged so that each tank can drain water, so that water can be drained individually after shipping. After removing and cleaning, it is possible to move on to the next fish breeding and shipping, which increases work efficiency.

The fish culture tank 4 on the east side of the partition wall 3A of the shipping tank 3 has an east-west length of 49.35 m, for example, and is partitioned into six sections by partition walls 4A, 4A, each of which is independent. The length of one section is, for example, 3.5 m in the east-west direction, and the water treatment section 5 is formed on the east side of the east boundary wall 4B. Since a plurality of fish farming tanks 4 are arranged in parallel, it is possible to subdivide for each fixed number of fish, and subdivide the number of shipments to improve work efficiency with a small number of people.

A drainage channel 4C is formed on the south side of the fish farming tank 4 and the water treatment unit 5, and a water supply channel 4D is formed on the north side thereof, each having a width of about 1 m. The west end of the north water supply channel 4D abuts against the partition wall 3A of the shipping tank 3, and the abutting partition wall 3A is provided with a slide gate 3D so as to communicate with the north intake channel 6B of the shipping tank 3. A slide gate 4F is arranged on the partition wall 4E on the north side of each fish tank 4 facing the water supply channel 4D.

This slide gate 4F opens, for example, the slide gate 4F leading to the north side water intake channel 6B of the shipping tank 3 at the west end, and the slide gate 3C of the partition wall 3A at the west end of the north water supply channel 4D leading to the water intake channel 6B. Open the slide gate 4F facing the water supply channel 4D on the north side of the fish farming tank 4, drive out the adult fish in the west fish farming tank 4 from the water supply channel 4D to the water intake channel 6B, and enter the shipping tank 3 at the western end into the slide gate. By closing 3C and 4F, the fish can be easily moved from the fish farming tank 4 to the shipping tank 3 in a short time without damaging the fish.

The water in each of the fish farming tanks 4 is pumped up by a pump 8, passes through the air pipe 7C shown in FIG. , the slide gate 4F facing the water supply channel 4D of each fish tank 4 can be opened to enter each fish tank 4.

The water filled in each fish farming tank 4 flows like river water, flows down to the drainage channel 4C on the south side, enters the water treatment unit 5, is purified, and then flows through each fish farming tank 4 from the water supply channel 4D on the north side. circulated to

The water treatment unit 5 is provided with two drum filters 11, 11 on the south side. Filtered to remove large dust.

The fish droppings are pulverized by the migration of the school of fish and the circulating water flow in an amount approximately equal to the volume of the fed food, and the fine powder floats and is discharged to the drainage channel 4C together with the drainage. The drum filter 11 can improve filtration efficiency by using a plurality of small units rather than a single large unit.

On the north side of the drum filter 11, eight biological treatment tanks 12, 12, four tanks in the east-west direction and two tanks in the north-south direction, are arranged. Fine dust adhering to countless small resin filter materials packed in 12 is decomposed by microorganisms, and the filtered water enters the north side CO ₂ degassing tank 13, where it is discharged from the air pipe 13A. Water that has been subjected to CO ₂ removal treatment by receiving air supply (using a turbo blower and a membrane air diffuser) is stored in the treated water tank 14 on the north side.

The length of the drum filters 11, 11 in the north-south direction is, for example, 2.75 m, and the length of each biological treatment tank 12 in the north-south direction is, for example, 2.6 m. 2 m. The length of the installation portion in the north-south direction of the CO ₂ deaeration tank 13 is, for example, 3.27 m, and four oxygen decomposition units 15 are arranged in the east-west direction at about 3.36 m on the north side. The number of installed oxygen decomposition devices 15 is increased or decreased according to the sewage treatment capacity.

The oxygen dissolving device 15 supplies a certain amount of oxygen by using liquid oxygen with a small gas-liquid ratio (the water flow is large with respect to the amount of oxygen supplied) in the device, and this is directly processed by the pump 15B. The treated water is supplied from the water tank 14 as fast flowing water to replenish the oxygen lost by respiration of the fish and to saturate the water, and then vigorously discharged into the supply water channel 4D on the side of the fish farm 4 and into the river to each fish farm 4. It is supplied like a stream and is made into a circulating water stream.

As an example, 10 mg/L of oxygen can be used in the fish tank 4 by setting D0 to about 16 mg at the outlet of the oxygen dissolving device 15 and 6 mg/L at the outlet of the fish tank 4 (the number of breeding is determined). The fish tanks 4 and 4 arranged side by side can be individually lowered with slide gates 3C and 4F that meet the standards such as DIN19569-4, which is convenient when taking out fish. By removing the water from the tanks 3 and 4 when not in use, it is possible to prevent accumulation of dust and putrefaction of the water.

In each of the fish farming tanks 4, the water flowing from the supply channel 4D on the north side to the partition wall 4E and flowing into the water channel flows southward, crosses the partition wall 4G, flows down to the drainage channel 4C on the south side, and flows to the water treatment unit 5. , is purified in the water treatment unit 5 and circulated to the fish farming tank 4 .

That is, independent circulation of service water in the shipping tank 3 and independent circulation of service water in the fish farming tank 4 can be performed. It is possible to increase the amount of circulating water in.

In this fish tank 4, well water with a temperature of 16 ° C. is supplied at 800 L / min, and about 100 g of rainbow trout (trout etc.) juveniles are put in three times a year and cultivated, and each mature fish grows to about 2.5 kg. Ship when done. The maximum feeding amount is 400 kg/day. As for the feeding method, feeding is performed by a general automatic feeding machine (not shown).

The target number of adult fish sold by the apparatus 1 of the present invention can be set at 50 ton to 70 ton annually. Such large-scale fish and shellfish farming is difficult to maintain because of the large facilities and difficulty in securing the installation site, and the flood damage of the river is too great.

On the other hand, when water is circulated in a reservoir system, aquaculture is carried out in one small tank, and a separate water circulation device and purification equipment are required. A shipping tank is also installed separately, a water circulation system and purification equipment are installed, and the work of moving fish from the fish farming tank to the shipping tank is required, and the production cost increases relative to the shipping volume, which is a burden on management.

On the other hand, in the parallel circulation filtration culture apparatus 1 of the present invention, the shipping tank 3, the fish culture tank 4, and the water treatment unit 5 are integrated in parallel, and the fish culture tank 4 and the water treatment unit 5 are separated from the shipping tank 3 with a step. By lowering the height, a natural flow is generated, and the water purified in the final water treatment unit 5 is pumped up and circulated by the pump 15B, so that an efficient natural flow of water can be generated in the fish tank 4. The fish swims facing upstream so as not to be swept away.

In addition, since the shipping tank 3 is of a circulating water flow type that is independent from the fish breeding tank 4, oxygen is sufficiently supplied by continuous air bubbles by the air lift 7, and the fish can be reliably cured in the shipping tank 3. rice field.

In the fish farming tank 4, by saturating the oxygen in the water of the fish farming tank 4 with the oxygen decomposition device 15, it is possible to significantly increase the amount of fish farming per cubic meter of the fish farming water. It is possible to increase the efficiency of fish farming.

Furthermore, by installing a plurality of shipping tanks 3 and fish breeding tanks 4 in parallel, management of fish breeding is facilitated, and efficient management and workability can be maintained for shipping. Further, by circulating excess free flowing water in the shipping tank 3 to the fish farming tank 4, the amount of circulating water in the fish farming tank 4 can be increased.

In addition, as measures against sudden disasters, a generator, an oxygen supply device, a reserve water pump, etc. (not shown) are installed. A sunscreen can be provided, and a fixed roof (not shown) can be erected over the entire area of the water treatment section 5 as required.

In the parallel circulating filtration aquaculture apparatus 1 of the present invention, the shipping tank 3 and the water treatment unit 5, which were conventionally installed separately, are connected in parallel to the fish culture tank 4 so that the water is circulated individually. Since management becomes easier and large-scale farming becomes easier, it becomes possible to carry out mass-farming of fishes and shellfishes even in mountainous areas and industrial areas, and it can be widely used in the fishery industry.

1. Parallel circulating filtration aquaculture equipment2. Water tank body 2A. 2. Tank bottom Shipping tank 3A. Partition 3B. side wall 3C. slide gate 3D. drain pipe 3E. Communicating pipe 3F. side walls 4 . Fish tank 4A. Partition wall 4B. Partition 4C. Drain 4D. Water supply channel 4E. Partition wall 4F. slide gate 4G. Partition 4H. 4. Drain pipe. water treatment section6. Partition 6A. Water injection channel 6B. Intake channel 6C. net7. airlift 7A. Groove 7B. Partition plate 7C. Intake groove 7D. Outlet ditch 7E. air pipe 8 . pump9. Water tank 9A. dust collecting recess 10 . circuit waterway 11 . drum filter 12 . _C02 biological treatment tank 12A. air supply pump 13 . _C02 deaeration tank 13A. air pump 14 . Treated water tank 15 . Oxygen decomposition device 15A. Air pump 15B. pumping pump

In the present invention, an adult fish shipping tank is connected in parallel to a circulating fish culture tank, and the water that is supplied to the shipping tank in which the adult fish are cured before shipping is supplied to the parallel fish culture tank in a free flowing manner. The present invention relates to a parallel circulating filtration aquaculture system that purifies waste water from tanks and circulates it to parallel fish culture tanks.

As described in Patent Document 1, for example, the circulating fish tank supplies water pumped up by a pump to the fish tank, purifies water contaminated with fish droppings, etc., and uses the purified water for fish farming. It is returned to the tank and circulated.
Adult fish that have grown to a size of about 2.5 kg/fish that can be shipped are transferred to a tank called a shipping tank that is prepared separately as needed, supplied with fresh water, and cured for a certain period without feeding before shipping. do.
Therefore, the circulating fish farming tank and the shipping tank for curing adult fish before shipping are completely different things, and the locations are far apart. It is discharged as it is and is wasted.

Japanese Patent No. 6858996

If the annual shipping volume of fish farming is only a few tons, the structure and water volume of the shipping tank are not so much of a problem. If necessary, the amount of water discharged from the shipping tank and the cost are enormous, and management cannot ignore it.
An object of the present invention is to effectively reuse the water discharged from the shipping tank and to provide a parallel circulation filtration aquaculture apparatus suitable for unprecedented large-scale aquaculture.
In addition, in order to move the fish from the fish farming tank to the shipping tank, it takes time and effort to scoop the fish with a net, transfer it to a container, move the container to the shipping tank, and transfer it to the shipping tank. The fish can be moved by chasing it in the water.

In order to solve the above problems, the present invention has taken the following technical measures.

(1) A fish and shellfish aquaculture apparatus, whose plan view follows a map and shows a shipping tank, a fish farming tank, and a water treatment unit with stepped water depths from the west side, which is upstream of one long tank body in the east-west direction. are formed in parallel so that
The shipping tank is supplied with water from an external pump to the north side of the circuit channel surrounding the north, west and south sides of the shipping tank. circulate the water discharged to the south side of the circuit water channel to the air lift to create a circulation flow in the shipping tank;
The fish farming tank is divided into a plurality of sections in the east and west, and a water supply channel is formed on the north side of the fish farming tank, and a drainage channel is formed on the south side. and the east side extends to an oxygen dissolving device described later in the water treatment section, and the east end of the drainage channel communicates with the water treatment section,
The water treatment unit includes a drum filter for filtering large dust from the south side, a biological treatment tank for filtering fine dust, a CO ₂ degassing tank, a treated water tank, and an oxygen dissolving device. Oxygen is dissolved in the water pumped from the treated water tank to the oxygen dissolving device, and is discharged so as to flow into the water supply channel on the north side of each of the fish culture tanks. Water flows into each tank from the north side of each fish farming tank across the partition wall, and overflowing water flows out to the drainage channel on the south side, is filtered by the drum filter, and circulates to the water supply channel. Parallel circulation filtration aquaculture equipment.

(2) A slide gate is formed on the side wall facing the circuit channel of each shipping tank and the partition wall facing the water supply channel of each fish farming tank. The parallel circulation filtration aquaculture apparatus according to (1), which is configured to be able to drain water.

(3) In the parallel circulation filtration aquaculture apparatus, the shipping tank is formed at one end in the longitudinal direction of the water tank body, and a plurality of shipping tanks are formed in parallel in the longitudinal direction. A water inlet channel is formed in a direction perpendicular to the water inlet channel formed long in the longitudinal direction of the water tank body facing the side wall of the end face, and an air lift and a water reservoir are formed from the water inlet channel in parallel with the water intake channel via a partition. A circuit channel is formed toward one end in the longitudinal direction of the water tank body and surrounds two outer sides of the shipping tank from the water reservoir portion, and the terminal end of the circuit channel is the drainage channel in the fish farming tank. According to (1) or (2), the side walls of the plurality of shipping tanks, which are formed to be able to communicate with each other and face the circuit channel, are lower in height than the side walls facing the intake channel. Parallel circulation filtration aquaculture equipment.

ADVANTAGE OF THE INVENTION According to this invention, the following effects are exhibited.

In the invention described in (1) above, the shipping tank, the fish farming tank, and the water treatment section are arranged in parallel so that the water level of the elongated water tank body is lowered stepwise from the upstream side in a plan view, so that the natural flow is maintained in the water tank. The water generated in the body and purified in the water treatment unit is pumped up and discharged to the water supply channel to the fish tank, so that a flowing circulation flow like river water is generated in the fish tank and cools the water. Suitable for culturing trout that live in clear streams.
The shipping tank for curing the fish before shipping is always filled with fresh, cold well water, and a circulating water flow is generated in the shipping tank alone. be nurtured. Since excess water is supplied to the fish tank without being discarded, the amount of water circulating in the fish tank can be increased.
Also, the water in the shipping tank can be purified in the water treatment units arranged in parallel without being discarded or purified separately.
Since a plurality of fish farming tanks and shipping tanks are formed in parallel in the downstream direction, individual fish farming tanks and shipping tanks can be easily managed individually, and shipping workability is excellent.

In the invention described in (2) above, slide gates are formed on the side wall facing the circuit water channel of each shipping tank and the partition wall facing the water supply channel of each fish farming tank, and slide each tank. Since the gate can be opened and closed so that the water can be drained individually, the tank can be drained and cleaned individually to prepare for the next step.

In the invention described in (3) above, a circuit water channel is formed on two sides of the shipping tank, and flowing water is supplied to the shipping tank by an air lift formed at the tip of the circuit water channel, and the water in the shipping tank is lowered. Since the water flows from the side wall to the circuit water channel, is circulated to the air lift, and is circulated to the shipping tank again by the air lift, the amount of water pumped up by the pump can be reduced. In addition, since the surplus water that has entered the circuit waterway passes through the drainage channel of the fish tank, is purified in the water treatment section, and is circulated to the fish tank, the water is not wasted.

1 is a plan view of a parallel circulating filtration aquaculture apparatus of the present invention; FIG. FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1; FIG. 2 is a vertical cross-sectional view of an air lift portion in FIG. 1;

One embodiment of the present invention will be described based on the drawings. FIG. 1 is a plan view of the parallel circulation filtration aquaculture apparatus of the present invention, and FIG.
In the figure, the parallel circulation filtration aquaculture apparatus 1 is formed as an elongated integral water tank body 2 in which three tanks, a shipping tank 3, a fish farming tank 4, and a water treatment section 5, are deepened stepwise from the upstream side on the left side of the drawing. The environment is ideal for trout, which live in cold water, but it is also used to farm other fish and shellfish.

For convenience of explanation, the water tank body 2 will be described with the front side as the south side, the front side as the north side, the upstream left side as the west side, and the right side as the east side.
The size of the water tank body 2 is, for example, about 49.35 m in length from east to west and about 17.75 m in width from north to south. 3 sections are set in parallel as , and 25.9 m on the east side is set as a fish farming tank 4 with 7 sections in parallel, and the boundary between the fish farming tank 4 and the shipping tank 3 is partitioned by a partition wall 3A. The number of plots is increased or decreased as appropriate according to the amount of aquaculture.

On the north side of the shipping tank 3, a blind alley-shaped water intake channel 6B is formed on the south side through a partition wall 6 that separates the water injection channel 6A. are formed with slide gates 3C and 3C, respectively.
A fish removal net 6C is stretched between the water injection channel 6A and the partition wall 3A so as to surround an air lift 7, which will be described later.

An air lift 7 is arranged on the north side of the partition wall 6 on the north side of the intake channel 6B. The distance between the partition wall 6 and the north side wall 3B of the shipping tank 3 is, for example, 1 m wide, and the running water entering from the water injection channel 6A moves westward and flows through the entire shipping tank 3 beyond the side wall 3B. It is configured to be supplied with water as

The plurality of shipping tanks 3 are arranged side by side, which has the advantage that the number of shipping fish can be divided into small pieces and can be shipped for each tank at the time of shipping, and the fish to be shipped next is individually cleaned after shipping. There are advantages to being able to

On the west side of the air lift 7 is provided a water reservoir 9 into which water is injected from a pump 8 outside the water tank body 2. A circuit water channel 10 having a width of, for example, about 1 m is formed on the south and west sides of the shipping tank 3 and the water reservoir 9 Flowing water overflowing from the south side wall 3F of each shipping tank 3 enters this circuit water channel 10 and flows to the air lift 7, and excess water flows from the communication pipe 3E to the drainage channel on the south side of the fish farming tank 4. After passing through 4C, it moves to the water treatment unit 5 and is purified.

That is, conventionally, since the shipping tank 3 is installed separately from the fish farming tank 4, the water in the shipping tank 3 that has become dirty due to curing of the fish to be shipped has been wastefully drained.
In addition, a circuit water channel 10 is provided in two directions, south and west, of the shipping tank 3 at one end of the water tank body 2, and the circuit water channel 10 is connected to the air lift 7 via the water reservoir 9, so that the water in the shipping tank 3 can be shipped. The tank 3 can be circulated independently, and the amount of water pumped up by the pump 8 can be reduced.

In addition, by forming a dust reservoir recessed portion 9A on the west side of the water reservoir 9 just before the air lift 7 and covering the entire width of the water reservoir 9 as necessary, a large mass of fish feces overflowing from the shipping tank 3 and flowing through the circuit water channel 10 can be removed as dust. It is possible to store the waste in the reservoir recess 9A and prevent it from returning to the shipping tank 2 and being circulated.

The air lift 7, as shown in the longitudinal section in FIG. 3, forms a groove 7A long in the north-south direction in FIG. A partition plate 7B is vertically installed from the upper part to near the bottom of the groove, and a water inlet portion 7C and a water outlet portion 7D are formed before and after the partition plate 7B. is opened near the bottom of the

By vigorously ejecting compressed air from the air pipe 7C, the air bubbles rise vigorously, thereby pushing the water in the water discharge portion 7D of the groove 7A shown in FIG. The water flowing into each shipping tank 3 flows down from the partition wall 3F, which is set to have a low water level on the south side, into the circuit water channel 10, is circulated toward the air lift 7, and part of the water flows into the communication pipe 3E is discharged to the drainage channel 4C on the south side of the fish farming tank 4 and enters the water treatment section 5.

In the shipping tank 3, the water pumped up by the pump 8 from the well outside the water tank body 2 flows by the air lift 7, and enters the shipping tank 3 from the water intake channel 6B over the side wall 3B. The water that has entered the shipping tank 3 flows over the south side wall 3F, falls into the circuit waterway 10, and reaches the air lift 7, where it is circulated. Cleansed and nurtured inside and out.

The water depth of the shipping tank 3 is formed to be, for example, 1.5 m, and the water depth of the following fish breeding tank 4 is set to, for example, 2.1 m, which is one step deeper and the water surface is lower.
The depth of the subsequent water treatment section 5 is set to be even deeper, for example, 2.5m to 3.4m. The water in the water tank body 2 flows from the shipping tank 3 to the fish farming tank 4, the drainage channel 4C, and the water treatment section 5 due to the drop.

As a result, the water in the shipping tank 3 is allowed to flow to the deep fish tank 4 due to the difference in the water surface, and the water treatment unit 5 is lowered to facilitate the flow of waste water.
On the south side of each shipping tank 3 and each fish farming tank 4, drain pipes 3D and 4H that can drain water individually to the outside are arranged so that each tank can drain water, so that water can be drained individually after shipping. After removing and cleaning, it is possible to move on to the next fish breeding and shipping, which increases work efficiency.

The fish culture tank 4 on the east side of the partition wall 3A of the shipping tank 3 has an east-west length of 49.35 m, for example, and is partitioned into six sections by partition walls 4A, 4A, each of which is independent. The length of one section is, for example, 3.5 m in the east-west direction, and the water treatment section 5 is formed on the east side of the east boundary wall 4B. Since a plurality of fish farming tanks 4 are arranged in parallel, it is possible to subdivide for each fixed number of fish, and subdivide the number of shipments to improve work efficiency with a small number of people.

A drainage channel 4C is formed on the south side of the fish farming tank 4 and the water treatment unit 5, and a water supply channel 4D is formed on the north side thereof, each having a width of about 1 m. The west end of the north water supply channel 4D abuts against the partition wall 3A of the shipping tank 3, and the abutting partition wall 3A is provided with a slide gate 3D so as to communicate with the north intake channel 6B of the shipping tank 3. A slide gate 4F is arranged on the partition wall 4E on the north side of each fish tank 4 facing the water supply channel 4D.

This slide gate 4F opens, for example, the slide gate 4F leading to the north side water intake channel 6B of the shipping tank 3 at the west end, and the slide gate 3C of the partition wall 3A at the west end of the north water supply channel 4D leading to the water intake channel 6B. Open the slide gate 4F facing the water supply channel 4D on the north side of the fish farming tank 4, drive out the adult fish in the west fish farming tank 4 from the water supply channel 4D to the water intake channel 6B, and enter the shipping tank 3 at the western end into the slide gate. By closing 3C and 4F, the fish can be easily moved from the fish farming tank 4 to the shipping tank 3 in a short time without damaging the fish.

The water in each of the fish farming tanks 4 is pumped up by a pump 8, passes through the air pipe 7C shown in FIG. , the slide gate 4F facing the water supply channel 4D of each fish tank 4 can be opened to enter each fish tank 4.

The water filled in each fish farming tank 4 flows like river water, flows down to the drainage channel 4C on the south side, enters the water treatment unit 5, is purified, and then flows through each fish farming tank 4 from the water supply channel 4D on the north side. circulated to

The water treatment unit 5 is provided with two drum filters 11, 11 on the south side. Filtered to remove large dust.

The fish droppings are pulverized by the migration of the school of fish and the circulating water flow in an amount approximately equal to the volume of the fed food, and the fine powder floats and is discharged to the drainage channel 4C together with the drainage. The drum filter 11 can improve filtration efficiency by using a plurality of small units rather than a single large unit.

On the north side of the drum filter 11, eight biological treatment tanks 12, 12, four tanks in the east-west direction and two tanks in the north-south direction, are arranged. Fine dust adhering to countless small resin filter materials packed in 12 is decomposed by microorganisms, and the filtered water enters the north side CO ₂ degassing tank 13, where it is discharged from the air pipe 13A. Water that has been subjected to CO ₂ removal treatment by receiving air supply (using a turbo blower and a membrane air diffuser) is stored in the treated water tank 14 on the north side.

The length of the drum filters 11, 11 in the north-south direction is, for example, 2.75 m, and the length of each biological treatment tank 12 in the north-south direction is, for example, 2.6 m. 2 m. The length of the installation portion of the CO ₂ degassing tank 13 in the north-south direction is, for example, 3.27 m, and four oxygen dissolvers 15 are arranged in the east-west direction at about 3.36 m on the north side. The number of installed oxygen dissolving devices 15 is increased or decreased according to the sewage treatment capacity.

The oxygen dissolving device 15 supplies a certain amount of oxygen by using liquid oxygen with a small gas-liquid ratio (water flow is large with respect to the amount of oxygen supplied) in the device, and this is directly processed by the pump 15B. The treated water is supplied from the water tank 14 as fast flowing water to replenish the oxygen lost by respiration of the fish and to saturate the water, and then vigorously discharged into the supply water channel 4D on the side of the fish farm 4 and into the river to each fish farm 4. It is supplied like a stream and is made into a circulating water stream.

As an example, DO can be about 16 mg at the outlet of the oxygen dissolving device 15 and 6 mg/L at the outlet of the fish farming tank 4, so that 10 mg/L of oxygen can be used in the fish farming tank 4 (the number of breeding is determined). The fish tanks 4 and 4 arranged side by side can be individually lowered with slide gates 3C and 4F that meet the standards such as DIN19569-4, which is convenient when taking out fish. By removing the water from the tanks 3 and 4 when not in use, it is possible to prevent accumulation of dust and putrefaction of the water.

In each of the fish farming tanks 4, the water flowing from the supply channel 4D on the north side to the partition wall 4E and flowing into the water channel flows southward, crosses the partition wall 4G, flows down to the drainage channel 4C on the south side, and flows to the water treatment unit 5. , is purified in the water treatment unit 5 and circulated to the fish farming tank 4 .

That is, independent circulation of service water in the shipping tank 3 and independent circulation of service water in the fish farming tank 4 can be performed. It is possible to increase the amount of circulating water in.

In this fish tank 4, well water with a temperature of 16 ° C. is supplied at 800 L / min, and about 100 g of rainbow trout (trout etc.) juveniles are put in three times a year and cultivated, and each mature fish grows to about 2.5 kg. Ship when done. The maximum feeding amount is 400 kg/day. As for the feeding method, feeding is performed by a general automatic feeding machine (not shown).

The target number of adult fish sold by the apparatus 1 of the present invention can be set at 50 ton to 70 ton annually. Such large-scale fish and shellfish farming is difficult to maintain because of the large facilities and difficulty in securing the installation site, and the flood damage of the river is too great.

On the other hand, when water is circulated in a reservoir system, aquaculture is carried out in one small tank, and a separate water circulation device and purification equipment are required. A shipping tank is also installed separately, a water circulation system and purification equipment are installed, and the work of moving fish from the fish farming tank to the shipping tank is required, and the production cost increases relative to the shipping volume, which is a burden on management.

On the other hand, in the parallel circulation filtration culture apparatus 1 of the present invention, the shipping tank 3, the fish culture tank 4, and the water treatment unit 5 are integrated in parallel, and the fish culture tank 4 and the water treatment unit 5 are separated from the shipping tank 3 with a step. By lowering the height, a natural flow is generated, and the water purified in the final water treatment unit 5 is pumped up and circulated by the pump 15B, so that an efficient natural flow of water can be generated in the fish tank 4. The fish swims facing upstream so as not to be swept away.

In addition, since the shipping tank 3 is of a circulating water flow type that is independent from the fish breeding tank 4, oxygen is sufficiently supplied by continuous air bubbles by the air lift 7, and the fish can be reliably cured in the shipping tank 3. rice field.

In the fish farming tank 4, by saturating the oxygen in the water of the fish farming tank 4 with the oxygen dissolving device 15, it is possible to significantly increase the amount of fish farming per cubic meter of the fish farming water. It is possible to increase the efficiency of fish farming.

Furthermore, by installing a plurality of shipping tanks 3 and fish farming tanks 4 in parallel, management of fish farming is facilitated, and efficient management and workability of shipping can be maintained. Further, by circulating excess free flowing water in the shipping tank 3 to the fish farming tank 4, the amount of circulating water in the fish farming tank 4 can be increased.

In addition, as measures against sudden disasters, a generator, an oxygen supply device, a reserve water pump, etc. (not shown) are installed. A sunscreen can be provided, and a fixed roof (not shown) can be erected over the entire area of the water treatment section 5 as required.

In the parallel circulating filtration aquaculture apparatus 1 of the present invention, the shipping tank 3 and the water treatment unit 5, which were conventionally installed separately, are connected in parallel to the fish culture tank 4 so that the water is circulated individually. Since management becomes easier and large-scale farming becomes easier, it becomes possible to carry out mass-farming of fishes and shellfishes even in mountainous areas and industrial areas, and it can be widely used in the fishery industry.

1. Parallel circulating filtration aquaculture equipment2. Water tank body 2A. 2. Tank bottom Shipping tank 3A. Partition 3B. side wall 3C. slide gate 3D. drain pipe 3E. Communicating pipe 3F. side walls 4 . Fish tank 4A. Partition wall 4B. Partition 4C. Drain 4D. Water supply channel 4E. Partition wall 4F. slide gate 4G. Partition 4H. 4. Drain pipe. water treatment section6. Partition 6A. Water injection channel 6B. Intake channel 6C. net7. airlift 7A. Groove 7B. Partition plate 7C. Intake groove 7D. Outlet ditch 7E. air pipe 8 . pump9. Water tank 9A. dust collecting recess 10 . circuit waterway 11 . drum filter 12 . CO2 biological treatment tank _12A . air supply pump 13 . CO2 deaeration tank 13A _. air pump 14 . Treated water tank 15 . Oxygen dissolver 15A. Air pump 15B. pumping pump

Claims (3)

A fish and shellfish aquaculture apparatus in which a shipping tank, a fish farming tank, and a water treatment section increase in depth stepwise from the west side corresponding to the upper stream of one long tank body in the east-west direction in a planar view following a map. are formed in parallel as
The shipping tank is supplied with water from an external pump to the north side of the circuit channel surrounding the north, west and south sides of the shipping tank. circulating the water discharged to the south side of the circuit water channel to the air lift to generate a circulation flow in the shipping tank;
The fish farming tank is partitioned into a plurality of sections in the east and west, and a water supply channel is formed on the north side of the fish farming tank, and a drainage channel is formed on the south side. and the east side extends to the oxygen decomposition device described later in the water treatment section, and the east end of the drainage channel communicates with the water treatment section,
The water treatment unit includes a drum filter for filtering large dust from the south side, a biological treatment tank for filtering fine dust, a _C02 degassing tank, a treated water tank, and an oxygen dissolving device. Oxygen is dissolved in the water pumped from the end-of-life tank to the oxygen dissolving device, and discharged to flow into the water supply channel on the north side of each of the fish farming tanks. flows into each tank from the north side of each fish farming tank across the partition wall, and overflowing water flows out to the drainage channel on the south side, is filtered by the drum filter, and circulates to the water supply channel. Parallel circulation filtration aquaculture apparatus characterized by: A slide gate is formed on the side wall facing the circuit water channel of each shipping tank and the partition wall facing the water supply channel of each fish farming tank, and the slide gate can be opened and closed for each tank to enable individual drainage. Parallel circulation filtration aquaculture equipment according to claim 1, characterized in that In the parallel circulation filtration aquaculture apparatus, the shipping tank is formed at one end in the longitudinal direction of the water tank body, and a plurality of shipping tanks are formed in parallel in the longitudinal direction. A water inlet channel is formed in a direction perpendicular to the water intake channel formed long in the longitudinal direction of the water tank body facing the water tank body, and an air lift is formed so that the water inlet channel is parallel to the water intake channel via a partition wall. A circuit channel is formed toward one end in the longitudinal direction so as to surround two outer sides of the shipping tank from the water tank portion, and the terminal end of the circuit channel is communicable with the drainage channel in the fish farming tank. 3. The parallel type according to claim 1 or 2, wherein the height of the side wall facing the circuit water channel in the plurality of shipping tanks is formed lower than the height of the side wall facing the water intake channel. Circulation filtration aquaculture equipment.

Images