KR20090027826A - Circulation filtration fish farming facility including return breeding tank - Google Patents

Abstract

The present invention relates to a circulating filtration fish farming facility comprising a circulating breeding tank, a filtration tank and a pumping pump,

Breeding tank of the present invention is composed of two inner channels communicating both ends, the bottom of the rear end of the central bulkhead of the breeding tank is provided with a dirt suction port, the filtration tank is an immersion-type biofiltration tank, introduced under the filtration tank The bottom of the filtration tank is inclined, the bottom of the slope has a filtration tank cleaning outlet, and on the bottom slope, a corrugated support is provided, and on the corrugated support, the corrugated plates are erected vertically. The upright structure, the pump pump is an axial flow pump (axial flow pump), the pumped breeding water is configured to be discharged downward,

Compared to conventional oil farms, the inflow of new water is greatly reduced, and space efficiency is very good compared to the circular tank, and it is possible to produce high quality fish, and it is very easy to discharge the waste water in the breeding tank, so it is easy to manage the management costs such as cleaning costs. And management time is saved.

Description

Circulation filtration fish farming facility including a return breeding tank {RECIRCULATING FISH CULTURE SYSTEM INCLUDING WATER CIRCULATING TANK}

The present invention relates to a circulating filtration fish farming facility including a circulating breeding tank, and more particularly, a certain amount of breeding water used in a circulating breeding tank and a breeding tank where a certain amount of breeding water is circulated (circulated) in the breeding tank. Regarding the circulating filtration fish farming facility which is transported to the filtration tank through the pumping pump, the breeding water is filtered and purified by the bio filtration method, and re-introduced into the breeding tank to breed a large amount of fish with only a small amount of water supply compared to the prior art. will be.

In order to raise fish artificially, it is natural to provide an environment close to the natural habitat of the fish. In raising most fish, especially freshwater fish, it is essential to meet not only the proper water temperature, but also the proper water quality, and the proper flow rate, that is, the condition of continuously flowing water.

Currently used fish farming facilities, especially freshwater fish breeding facilities, are simple types of fish farming facilities that search for abundant water reserves in inland mountains, create breeding areas or breeding tanks, place fish and keep the water flowing. In addition, in order to save water, a circular filtration fish farm is added to the simple flowing breeding tank to filter and purify the breeding water used in the breeding tank and re-introduce the fish into the breeding tank. have.

According to the structure of the breeding tank, the fish farming tank is divided into a channel breeding tank and a round breeding tank, and the channel breeding tank literally arranges several long channels (about 2 to 3 m in width and about 30 m in length) in parallel. One end continuously sends a large number of breeding water, and the other end continuously discharges the already used breeding water. A circular breeding tank uses fish in a circular space and uses circulation means (usually aberration). It is a way to circulate water in a breeding tank.

Waterway type has several long channel breeding tanks arranged in parallel, so the space utilization is much better than the round breeding tank, and it keeps constant water flow in one direction compared to the round breeding tank, so it is close to the natural environment as much as possible. The breeding status of fish (development, wound reduction) has a good advantage.

However, the channel breeding tank has to maintain a high flow rate (about 20 cm / sec) under the conditions of fish breeding by sending the breeding water to one side of the channel and draining the breeding water to the outside. It is a waste of reusable water because of the continuous flow of breeding water.

In addition, an important problem to be solved when raising fish is to remove dirt, such as food waste and fish droppings, fine suspended matter, etc. that accumulate in the breeding tank. Due to the large density of fish in the confined space, the fish have a high density, and the amount of excretion, ammonia gas and other fine suspended solids from the fish is significant. Due to its wet nature, food residues are piled up and the floors are not cleaned frequently, which contaminates the water quality and damages the health of the fish they breed. In addition, many medicines, including antibiotics, are used to treat diseases. In particular, in the case of trout, only the first grade water lives, so the water quality of the breeding tank must always be made the best. Therefore, in order to reduce the contamination in the breeding tank, at least 10 to several tens of times the amount of water must be continuously injected through the fish farming facility of the present invention. Not only is it difficult to find a land rich in water to satisfy this, but it is also very difficult to find a new breed of land that satisfies appropriate conditions due to tightened government regulations on the use of rivers and groundwater.

In order to solve these problems, even if a separate filtration system is installed, a much larger filtration system is needed than the size of the breeding tank in order to sufficiently filter the large amount of water used in the breeding tank of the fish farm, and a highly efficient filtration facility is required. Therefore, the facility cost and maintenance costs are very big problem. In particular, the flow rate in the filtration tank is very slow (about 5mm / sec in the general filtration facilities) for sufficient filtration, the flow rate in the channel breeding tank flows much faster than the filtration tank, it is very difficult to match these quantities, It is very difficult for the filtration tank to digest the breeding water discharged from the breeding tank.

The circular breeding tank circulates water using aberrations, etc. in the circular breeding tank, so that some vortices are formed and solid wastes are collected in the center, so if the waste outlet is installed here, it is easier to remove the dirt. However, as described above, there is a problem in that the space efficiency is very low compared to the channel type, and the production volume is lowered compared to the site, the flow rates of the inside and the outside of the tank are different from each other, and the contact frequency between the fish is high, resulting in more skin wounds than the channel type. There is a disadvantage of poor development. In addition, there is a limit to the size of the breeding tank compared to the channel.

The present invention has been created to solve the problems of the prior art as described above, having only the advantages of a waterway breeding tank and a circular breeding tank at the same time, breeding tank to discharge solid wastes such as feed waste and excreta more effectively than the prior art The purpose is to provide a structure.

Another object of the present invention is to provide a filtration tank structure capable of filtering and purifying breeding water at a lower cost and efficiency than the prior art.

It is another object of the present invention to provide a pumping pump for pumping breeding water at low cost (saving the amount of power due to a low head lift) and providing a sufficient oxygen supply.

The fish farming facility of the present invention for achieving the above object is composed of a channel breeding tank, an immersion type biofiltration tank, a pump pump and a water channel connecting them, and the like.

The fish farming facility of the present invention is one or more breeding tanks in which fish are bred, a filtration tank for filtering the breeding water used in the breeding tank and re-feeding the breeding tank, and a pumping pump for transporting the breeding water used in the breeding tank to the filtration tank. To include,

The breeding tank has a long channel, a central bulkhead of a length shorter than the channel length is provided in parallel with the channel at the center of the channel to separate the channel into two internal channels communicating with both ends,

Inside each of the inner channel is provided with breeding water circulation means for circulating breeding water between the inner channel,

Soil suction port is provided at the bottom of both rear end of the central bulkhead so that the dust collected by the breeding water vortex passing through the connecting passage between the inner channel of the center bulkhead end by the breeding water circulation means,

The waste collected in the waste suction port is characterized in that the waste pipe is provided with a stand pipe for discharging the discharge through the waste discharge pipe outside the breeding tank.

The main feature of the breeding tank of the present invention is a long channel type in which water can be internally circulated (circulated), and a dirt suction port is installed where the dirt is gathered by the strong vortices of the breeding water passing through the connecting passage between the inner channels. This is to efficiently discharge the dirt concentrated by the vortex to the outside. At least one breeding tank is preferably arranged in parallel.

The inner channel width is adjustable as necessary, but preferably 1.5 m to 4 m, more preferably about 3 m, and the width of the connection passage between the inner channels at both ends of the central bulkhead is fast to increase the flow velocity. In order to generate the vortex, it is preferable to be designed smaller than the inner channel width, preferably about 1/3 to 2/3 times the width of the inner channel, and more preferably about 1/2 the width.

The direction of the breeding water flowing through the inner channel is changed to 90 degrees in the connecting channel and then rotated by 90 degrees in the next inner channel, and it passes through the connecting channel relatively narrower than the inner channel, so the strong vortex flows efficiently. Occurs. This is made in a narrower space compared to the conventional round breeding tank, and because the flow rate is larger, the vortex is stronger than the circular breeding tank. Solid dirt, such as feed debris and feces, which pass through the connecting passage, collects well behind the central bulkhead by vortices. By installing a waste suction port at the bottom of the central bulkhead, it is possible to effectively discharge the concentrated soil to the outside of the breeding tank. Concentrated waste is not discharged continuously but is discharged very quickly when a strong pressure is applied to the waste inlet by external opening.

The waste suction port is discharged into the stand discharge pipe for waste discharge through the waste discharge pipe buried under the bottom of the breeding tank. The dirt suction port has a number of small holes that prevent the fish from escaping and only the dirt drains into the waste discharge pipe.

The waste discharge stand pipe is fixed to or detachable from the waste discharge pipe. The reason why the sewage discharge stand pipe is separately installed is to offset the strong water pressure applied to the sewage discharge pipe buried underground due to the water level difference of the breeding tank. The water level and the level of the waste pipe are similar to the water level newly introduced into the breeding tank (there is a separate filtration tank, so a very small amount is introduced from the outside), so that the waste pipe is discharged to the outside. Slowly discharge. In other words, the stand pipe for the waste discharge to keep the level of the breeding tank constant by continuously discharging the used breeding water to the outside about the amount that is usually introduced into the breeding tank from the outside, but when the rapid discharge of concentrated waste The waste discharge stand pipe is removed from the waste discharge pipe at one time, and the waste is discharged at once, and then inserted into the waste discharge pipe to control the water pressure and the breeding water discharge. The number of discharges of concentrated waste depends on the circumstances, but usually two to three times a day is sufficient.

The waste discharge stand pipe may be the simplest pipe without a waste discharge groove, and in this case, the height of the pipe may be discharged to the outside as much as the fresh water flows into the breeding tank only when the height of the pipe is slightly smaller than the level of the breeding tank.

On the other hand, preferably, a separate waste discharge groove is formed in the stand discharge pipe so that the breeding water can be discharged to the outside through the waste discharge groove. In this case, the pipe can be made higher, which makes the work easier.

On the other hand, more preferably, the waste discharge stand pipe may be provided with a pair of inner pipes and outer pipes in close contact with each other, and one of the pipes has a plurality of waste discharge grooves formed up and down, or the groove is vertically long. The other five may be configured to move up and down to adjust the discharge level. This pair of pipes is the most efficient.

Breeding tank of the present invention may be provided with a fluid guide wall in the corner portion of the waterway. The fluid guide wall smoothly finishes the corners of the inner channel to facilitate the movement of water between the inner channels, while preventing dirt from accumulating at the corners of the inner channel (preventing vortices at the corners of the channel), that is, arranged in parallel, It provides a separate triangular space with a breeding tank and installs a stand pipe for waste discharge to maximize space efficiency of the breeding facility. The fluid guide wall, the central bulkhead, and the waterway wall are all made of concrete, but the material of the invention is in principle not limited to the material because of the structure of the tank.

Most of the breeding water in the breeding tank is returned in the internal channel, while the remaining part of the breeding tank leaves the breeding tank and is transferred to the filtration tank through another channel. Between the breeding tank and a separate channel is provided with a screen net with a small hole, the fish can not escape to the outside. The screen net is detachable to the breeding tank is replaced with a blocking plate when cleaning the breeding tank can be restrained movement of other breeding tank and breeding water.

Since the water level difference between the breeding tank and the filtration tank of the present invention is smaller than that of a conventional fish farming facility, a low-pumping large-capacity axial flow pump (propeller type vane wheel rotation) is used instead of a conventional fugal pump. Low pump for pumping water in the axial direction. The pumping outlet of the pump pump of the present invention is preferably installed to face in the vertical downward direction. If water is pumped strongly downward, a considerable amount of foam is generated by the frictional force of the water, and the oxygen supply is smoothly supplied to the breeding water, thereby increasing the reuse life of the breeding water.

The filtration tank of the present invention is a submerged biofiltration tank in which breeding water is introduced under the filtration tank and discharged from the top of the filtration tank via the filtration material.

The structure of the filtration tank is provided with one or more (preferably about six) filtration tank inlet so that breeding water flows into the filtration tank at the bottom of one side of the filtration tank wall, and at least one (preferably six at the top of the opposite wall of the filtration tank inlet). Filtration tank outlet, and the bottom surface of the filtration tank is formed to be inclined downward from the breeding water outlet direction toward the filtration tank inlet direction, and the bottom of the inclined surface is provided with a filtration tank cleaning outlet, and on the inclined surface to support the corrugated plates, which are filtration materials. The surface of the support is installed horizontally, the corrugated plate is erected in the vertical direction to the corrugated plate support, characterized in that the bone direction of the corrugated plate is erected in cross contact with each other sequentially.

Arranging the filtration tank inlet at the bottom, and disposing the filtration tank outlet at the top has the effect of making the filtration effect on the entire filtration material, and has the effect of discharging only the filtered clear water out of the filtration tank.

The bottom of the filtration tank is inclined toward the filtration tank discharge port from the filtration tank inlet side. This is to facilitate the cleaning of the filtration tank by considering the flow of the breeding water, while collecting the suspended matter to one side when cleaning the filtration material and discharged through the filtration tank cleaning outlet.

Since the bottom of the filtration tank is inclined, the corrugated support is horizontally installed for smooth installation of the filtration corrugated plate. The corrugated support is not limited in shape since it only needs to support the corrugated plate.

The corrugated plate, which is a filtering material, is densely placed on the corrugated plate support to complete the filtration tank.

As the filtration material, a plastic sheet in the form of a corrugated sheet is mainly used, but the main characteristic of the filtration material is that in the form of a corrugated sheet, and thus the material is not greatly limited. However, since the conventional PVC corrugated sheet widely used as a building material (mainly rain shade of a building) is commercially available, it is preferable to use it. According to the necessity, the length of the corrugated board is determined to meet the specification of the filtration tank used in the present invention, and is made to order. This is only about half of what is on the market.

The PVC corrugated plate is erected in the direction of the filtration tank outlet from the direction of the filtration tank inlet, and it is preferable that the corrugated plates are erected so that the bones cross each other and reach the ends. This is because when the corrugates overlap in the same direction, no internal space is generated. When the corrugated plate is installed in such a structure, since a separate laminated member is not required, the cost is greatly reduced and the installation of the structure is very easy. It is preferable that the filtration tank of this invention consists of a structure in which several filtration tanks (generally around 10 pieces) are arrange | positioned in parallel. Separation of the filtration tank into several filtration tanks can slow down the flow rate in the filtration tank, thereby greatly increasing the filtration precipitation effect. The structure of the filtration tank is preferably designed in consideration of the size of the filtration material used so that the filtration material does not need to be cut out. The breeding water flowing into the installed filtering material flows through the bones formed by crossing the corrugated sheets so that they move at a very low speed (about 5 mm / sec), and because the area of the formed cardboard reaches about 40 times the floor area, the filtering material Compared with simple sedimentation basins without sediment, it has an excellent sedimentation effect of about 40 times per area. In addition, decomposing microorganisms such as decomposed feed residues, decomposed feces, other micro-contaminants, and bacteria that remove harmful substances such as ammonia and nitrite are naturally generated, multiply, adhere to, and form, as biofiltration tanks. By playing a role, you can maximize the purifying power of breeding water. The filter tank of the present invention has about 90% of suspended sedimentation filtration efficiency, and does not need to be cleaned for 4 to 5 months. It flows down and gathers in one place by the inclined surface, and discharges it to the outside by opening the filtration tank cleaning outlet. Since the outlet for filtration tank cleaning is located at the bottom of the filtration tank, it is preferable to adjust the opening and closing by inserting a standpipe to the outlet for filtration tank cleaning for easy opening.

Breeding water purified in the filtration tank may be re-introduced directly into the breeding tank or re-introduced into the breeding tank through a separate channel or space before the breeding tank main water.

If there is a separate channel or space, the flow rate of the breeding water can be controlled to control the flow of the breeding water between the filtration tank and the breeding tank, and each of the filtration and breeding tanks can be separated and cleaned separately, and the effect of precipitating fine suspended matter once more There is.

Breeding tank of the present invention, while maintaining the advantages of the channel breeding tank and the circular breeding tank as it is, can save at least about 10 times more water than the conventional channel breeding tank, the discharge of concentrated waste is easy and the efficiency is good It saves labor and has the effect of raising very healthy fish at high density.

In addition, the cost of materials such as filtration material is greatly reduced compared to the size of the facility, the cost is very reduced in the amount of power, it is very economically excellent compared to the prior art.

Hereinafter, the fish farming facility of the present invention will be described in detail through preferred embodiments. This embodiment is only one preferred embodiment, the scope of the present invention is not limited by this embodiment.

1 is a schematic diagram of a fish farming facility according to an embodiment of the present invention,

Figure 2 is a detailed structural diagram of one breeding tank according to an embodiment of the present invention.

The fish farming facility of the present invention includes six long waterway breeding tanks 1 as shown in FIG. 1, and as shown in FIG. 2, the length of one breeding tank 1 is about 30 m. The breeding tank 1 has a width of about 6 m. In the embodiment of the present invention, the channel length is about 30 m, but may be designed to be longer or shorter to some extent depending on the situation of the breeding site or the number of breeding tanks 1. However, if the length of the channel is too long, the distance of the solid waste generated in the breeding tank 1 to the waste suction port 16 becomes too long, so that the effect of the waste discharge is reduced. not.

The breeding tank 1 has a width of about 6 m. At the center of the breeding tank 1, a central partition 11, which is shorter than the length of the channel, is installed along the channel, so that the breeding tank 1 is about 3 m long. The inner channel 12 of the m width is separated into two, and the two inner channels 12 are designed so that the ends of the channels communicate with each other so that breeding water can flow (circulate) between the inner channels. Thus, the actual width of the channel where the fish live is about 3 m. In the present embodiment, the width of the inner channel 12 is about 3 m, but the width of the channel can be adjusted as needed, and considering the fish breeding amount and the working environment, it is preferable that the width of the inner channel 12 is about 1.5 m to 4 m.

Each of the internal channels 12 of the breeding tank 1 is provided with breeding water circulation means to move the breeding water in one direction. The breeding water circulation means may be any conventional means for flowing the breeding water in the water channel, but aberration 14 may be preferably used. Such aberration 14 is floated on the surface in the form of a watermill, and moves the breeding water at a constant flow rate (about 20 cm / sec), while dispersing some breeding water into the air to supply oxygen to the breeding water. Play a role at the same time.

In this embodiment, the central bulkhead 11 is formed at both ends about 1.5 m shorter than the length of the channel, so that the width (about 1.5) of the connection passage 13 (the part where water at both ends of the central bulkhead 11 is turned) between the internal channels is about 1.5 m. m) is formed about 1/2 times of the width (about 3 m) of the inner channel 12. The reason why the connection passage 13 between the inner channels is smaller than the width of the inner channel 12 is to speed up the flow rate of the water at the end of the central partition 11 so that the vortex is formed immediately behind the central partition 11. Solid wastes such as feed waste and excreta are collected well here, and the waste suction port 16 is installed here to discharge only the concentrated wastes, thereby effectively discharging the wastes out of the breeding tank (1) without unnecessary waste of water. Will be. Concentrated waste is continuously discharged in small amounts, and if required to pull out the standpipe (18) to take a strong pressure on the waste suction port 16 is discharged very quickly. It is enough to open about 1 to 2 minutes.

It is most preferable that the width of the connection passage 13 between the inner channels is about 1/2 of the width of the inner channel 12, but several times it is sufficiently effective to discharge the dirt even at about 1/3 to 2/3. It was confirmed through the experiment.

In this embodiment, the fluid guide wall 15 is formed at the corner of the inner channel 12. The fluid guide wall 15, the central partition wall 11, and the water channel wall are all made of concrete, but in principle, the material is not limited. The fluid guide wall 15 smoothly finishes the corners of the inner channel 12 to smoothly move the water between the inner channels, while preventing dirt from accumulating at the corners of the inner channel 12 (vortices at the corners of the channel). Prevention), by providing a triangular-shaped space in common with the other breeding tank (1) arranged in parallel, by providing a stand pipe 18 for waste discharge there is provided the effect of maximizing the space efficiency of the breeding facility.

Dirt, such as feed dregs and excreta, which pass through the connecting passages 13 between the inner channels, are collected at the bottom of the rear wall of the central bulkhead 11 by vortices, and a waste suction port 16 is installed therein. The dirt suction port 16 is preferably installed at about 10 to 50 cm from the end of the central partition wall 11, and the shape of the dirt suction port 16 may be used, but a rectangular shape parallel to the central partition wall 11 is preferable, and about 10 Multiple holes of about 15 mm are formed, preventing fish from leaving and only draining dirt. The hole size and number of the dirt suction openings 16 can be changed suitably as needed.

3 is a system display diagram in which dirt is discharged from the breeding tank 1 according to an embodiment of the present invention.

The concentrated waste accumulated in the waste suction port 16 is transferred to the stand discharge pipe 18 for waste discharge through the waste discharge pipe 17 buried under the bottom of the breeding tank 1 as shown in FIG. Discharged.

The waste discharge stand pipe 18 is intended to significantly weaken the strong water pressure applied to the waste discharge pipe 17 by the height difference, and the height difference between the upper end of the waste discharge stand pipe 18 and the water surface in the breeding tank. Soil is discharged out of the breeding tank through the waste discharge pipe 17 and the stand discharge pipe 18 for waste discharge according to the water pressure generated by the water pressure. The amount of water newly introduced into the breeding tank 1 by making the standing pipe 18 for waste discharge perpendicular to the waste discharge pipe 17 so that the water level of the breeding tank 1 and the level of the stand pipe 18 for waste discharge are similar. As much as the degree (a separate filtration tank (3) has a very small amount introduced from the outside of the fish farm size) serves to slowly discharge to the outside through the stand pipe 18 for the waste discharge. Breeding water or filth flowing out of each waste discharge stand pipe 18 is sent to the waste disposal plant through the underground waste total discharge pipe 19.

The waste discharge stand pipe 18 is detachable from the waste discharge pipe 17. When the sewage discharge stand pipe 18 is separated from the groove of the waste discharge pipe 17, a strong water pressure is generated due to the difference between the water level of the breeding tank 1 and the height of the waste discharge pipe 17, so that the concentrated wastes collected at the waste discharge outlet are very fast. It will be discharged to the outside.

The waste discharge stand pipe 18 may consist of one pipe, or preferably two pipes in close contact. In the case of a single pipe, the pipe height may be set slightly smaller than the water level of the breeding tank 1, and in the case where a separate waste discharge hole is formed on the pipe, the waste discharge hole is greater than the water level of the breeding tank 1. It can be installed at a slightly smaller height. In the case of two tightly coupled pipes, one of the pipes may have a long length of the waste discharge hole formed up and down, and the other pipe may be in close contact with the outer surface or the inner surface thereof to adjust the level of the waste discharge by vertical movement of the pipe. Consisting of two inner and outer pipes with adjustable height, it is very convenient to operate.

The breeding water in the breeding tank 1 is continuously circulated (circulated) through the internal channel 12, while a part of the breeding water is transferred to the filtration tank 3 through a separate channel (see FIG. 2).

Between the breeding tank (1) and a separate waterway is provided a screen net 20 with a small hole is not able to escape the fish to the outside. The screen net 20 is detachable to the breeding tank (1) when cleaning the breeding tank (1) by replacing the screen net 20 with a blocking plate sandwiched with other breeding tank (1) and then underground drainage pipe Open (21) to empty and clean the breeding tank (1).

When the fish is shipped, the screen net 20 is opened to attract the fish to the catch tank 22 to work.

Since the breeding water filtered in the filtration tank 3 must be re-injected into the breeding tank 1, a level difference (about 50 cm) between the breeding tank 1 and the filtration tank 3 occurs. Therefore, the present invention includes a pumping pump 2 to transfer the breeding water flowing out of the breeding tank 1 to the filtration tank 3 through a separate channel.

Since the water level difference between the breeding tank 1 and the filtration tank 3 of the present embodiment is smaller than that of the conventional fish farming facility, a low-capacity large-capacity axial flow pump (propeller) is used instead of the conventional fugal pump. It is also possible to use a low lift pump that sends water in the axial direction by the rotation of a vane of a mold. The pumping outlet of the pump pump 2 of the present invention is preferably installed to face in the vertical downward direction. If the pump is strongly pumped in the downward direction, a considerable amount of foam is generated by the frictional force of the water, and oxygen is supplied to the breeding water smoothly.

4 is a plan view of a submerged biofiltration tank 1 according to an embodiment of the present invention,

5 is a cross-sectional view of FIG. 4.

Breeding water pumped by the pump pump 2 is introduced into the filtration tank 3, the filtration tank 3 of the present embodiment is a submerged biofiltration. The breeding water pumped by the pumping pump 2 is introduced into the filtration tank 3 through the filtration tank inlet 31 provided at the lower end of the wall of the filtration tank 3, and the introduced breeding water is filtered through the filtration material and the opposite filtration tank ( 3) It is discharged out of the filtration tank 3 through the filtration tank discharge port 32 provided in the upper end of the wall.

Breeding water is introduced to the bottom of the filtration tank (3) to be discharged upward has the effect that the filtration effect is made to the entire filtration material, there is an effect to discharge only the filtered clear water out of the filtration tank (3).

The bottom of the filtration tank 3 is formed inclined toward the filtration tank discharge port 32 from the filtration tank inlet 31 side. This is to facilitate the cleaning of the filtration tank (3) by considering the flow of the breeding water, while allowing the suspended matter to collect to one side when cleaning the filtration material to discharge through the filtration tank cleaning outlet.

Since the bottom of the filtration tank 3 is inclined, the support plate 33 of the corrugated plate 34 is horizontally installed for smooth installation of the corrugated plate 34 which is a filtration material. Corrugated sheet 34 support 33 is not limited to the shape just because it supports the corrugated sheet 34.

The corrugated plate 34, which is a filtration material, is closely placed on the support plate 33 of the corrugated plate 34 to complete the filtration tank 3.

As the filtration material, a plastic sheet mainly in the form of a corrugated sheet 34 is used, but the main characteristic of the present filtration material is that in the form of a corrugated sheet 34, so that the material is not greatly limited. However, since the conventional PVC corrugated sheet 34 widely used as a building material (mainly rain shade of a building) is commercially available, it is preferable to use it. The size of the PVC corrugated sheet 34 of this embodiment is 127 cm in length and 63 cm in width, and the number of bones is 20 bones.

The PVC corrugated sheet 34 is installed in the filtration tank 3 by standing in the direction of the filtration tank outlet 32 in the direction of the filtration tank inlet 31, and the bones of the corrugated plate 34 are sequentially staggered from one side of the filtration tank 3. More specifically, the installation method of the PVC corrugated sheet 34, since the normal PVC corrugated sheet 34 is twice the width of the width of the PVC corrugated sheet (34) once on the wall of the filter tank (3) so that the bone in the horizontal direction After setting up the horizontal distance of 127cm and the vertical height of 63cm, put two corrugated sheets 34 into the horizontal direction of 63cm and the vertical height of 127cm so that the goal is in the vertical direction.The horizontal distance of 126cm and the vertical height of 127cm After setting up, the next corrugated sheet (34) is filled again in the filter tank (3) in such a manner that the bones are horizontally attached again, and one sheet is placed upright in the same direction.

The filtration tank 3 of the present invention has a structure in which several filtration tanks 3 (generally around 10) are arranged in parallel. Separation and placement of the filtration tank 3 into a plurality of filtration tanks 3 can control the flow rate extremely slowly, and thus the effect of sediment removal on the fine corrugated PVC sheet 34 is very high.

The corrugated plate 34 installed as described above does not need a separate lamination member, thereby greatly reducing costs and is advantageous in installation.

The breeding water flowing into the filtration tank 3 flows through the bone formed by crossing the bone plates 34 so that they move at a very low speed (about 5 mm / sec), and the sediment deposition area of the formed bone plate 34 is the floor area. Since it reaches about 40 times, it has about 40 times better sedimentation effect per same area than the simple sediment without filter material. In addition, decomposed microorganisms such as decomposed feed residues, decomposed feces, other fine contaminants, and bacteria that remove harmful gases such as ammonia and nitrite are naturally generated and propagated to adhere to the corrugated sheet 34. As it is formed, it can serve as a biological filtration tank (3), thereby maximizing the purification capacity of the breeding water. The filtration tank 3 of the present invention has a filtration efficiency of about 90%, does not need to be cleaned for 4 to 5 months, and the soil or sludge just by spraying water from above without having to separate the stacked corrugated plates 34 during cleaning. Is flowed down and gathered in one place by the inclined surface and discharged to the outside by opening the discharge pipe 35 for cleaning the filtration tank. Since the filtration tank cleaning discharge pipe 35 is located at the bottom of the filtration tank 3, the stand pipe 36 is fitted to the filtration tank cleaning discharge pipe 35 for easy opening.

Breeding water purified in the filtration tank (3) can be re-injected directly into the breeding tank (1) or re-injected into the breeding tank (1) through a separate channel or space before being fed into the breeding tank (1).

If there is a separate channel or space, the flow rate of the breeding water can be controlled to control the flow of the breeding water between the filtration tank (3) and the breeding tank (1), and separate each of the filtration tank (3) and the breeding tank (1) There is a cleaning effect.

1 is a schematic diagram of a fish farm in accordance with one embodiment of the present invention.

Figure 2 is a detailed structural diagram of one breeding tank according to an embodiment of the present invention.

3 is a system display diagram that the waste is discharged from the breeding tank according to an embodiment of the present invention.

Figure 4 is a plan view of one submerged biofiltration tank according to an embodiment of the present invention.

5 is a cross-sectional view of a submerged biofiltration tank according to an embodiment of the present invention.

<Description of Symbols for Major Parts of Drawings>

 1: breeding tank 2: pumping pump 3: filtration tank

11: central bulkhead 12: internal channel 13: connecting passage between internal channels

14: aberration 15: fluid guide wall 16: dirt inlet

17: Waste discharge pipe 18: Stand pipe for waste discharge

19: underground waste discharge pipe 21: screen net 22: underground drain pipe

23: capture tank

31: filtration tank inlet 32: filtration tank outlet 33: corrugated support

34: corrugated plate 35: filtration tank cleaning outlet

36: stand pipe for filtration tank cleaning

Claims (7)

In a fish farming facility comprising at least one breeding tank in which fish are bred, a filtration tank for filtering and feeding back the breeding water used in the breeding tank, and a pumping pump for transporting the breeding water used in the breeding tank to the filtration tank. , The breeding tank has a long channel, a central bulkhead of a length shorter than the channel length is provided in parallel with the channel at the center of the channel to separate the channel into two internal channels communicating with both ends, Inside each of the inner channel is provided with breeding water circulation means for circulating breeding water between the inner channel, Soil suction ports are provided at the bottom of the rear of both ends of the central bulkhead so that the dirt collected by the breeding water vortices passing through the connecting passage between the inner channels of the central bulkhead end is discharged by the breeding water circulation means. Fish farm facility, characterized in that the waste pipe is equipped with a stand pipe for waste discharge so that the waste collected in the waste suction port is discharged to the outside of the breeding tank through the waste discharge pipe. According to claim 1, wherein the inner channel width is 1.5 m ~ 4 m, the width of the connecting passage between the inner channel at both ends of the central bulkhead is characterized in that 1/3 to 2/3 times the width of the inner channel. Fish farming facility. According to claim 1 or 2, wherein the waste discharge stand pipe is fixed or detachable to the waste discharge pipe, the waste discharge stand pipe has a waste discharge groove up and down, the water level control pipe is the waste discharge stand Fish farming facility characterized in that it is provided in close contact with the inside or outside of the pipe to adjust the level of waste discharge by moving up and down the water level control pipe. 4. The fluid guide wall of claim 3, wherein a fluid guide wall is formed at an edge portion of the breeding tank to facilitate circulation of the breeding water, and the stand discharge pipe is installed inside the fluid guide wall between the breeding tanks. Fish farming facility. According to claim 1, At least one filter tank inlet is provided at the bottom of one side of the filtration tank wall breeding water flow into the filtration tank, One or more filtration tank so that the filtered breeding water is re-introduced into the breeding tank at the top of the opposite wall of the filtration tank inlet The outlet is provided, the bottom of the filter tank is formed to be inclined downward in the direction of the filter tank inlet in the direction of the breeding water outlet, the outlet for the filter tank cleaning is provided on the bottom of the inclined surface, and the corrugated support is horizontally supported on the inclined surface to support the corrugated plates as the filtering material. Is installed in the, the corrugated plate is erected in the vertical direction to the corrugated support, the bone direction of the corrugated plate is fish farming facility characterized in that the sequential cross contact with each other. The method according to claim 5, wherein a separate channel or space is formed between the filtration tank and the breeding tank to control the flow rate of the breeding water, control the flow between the filtration tank and the breeding tank, and separate cleaning of the filtration tank and the breeding tank is possible. A fish farm, characterized in that The fish farming facility according to claim 1 or 5, wherein the pumping pump is an axial flow pump, and the pumping breeding water is discharged downward to smoothly supply oxygen to the breeding water.

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