KR102203369B1 - Culturing apparatus for rearing shrimp having water circulation system - Google Patents

Abstract

The present invention is provided with one or more aquaculture tanks in which aquaculture organisms are stocked and raised; A collection tank in which the breeding water of the culture tank is drained and stored; By providing a circulating filtration shrimp farm consisting of a purified water tank in which the breeding water stored in the water collecting tank is moved and purified, a filtration effect through the fixed bonus material part is exerted in the first separating part installed in the front of the purified water tank, and the second part is 2 The separation unit has the effect of removing sludge and untreated substances desorbed from the first separation unit at the front end, thereby securing a stable overall purification effect.Therefore, the purification efficiency does not decrease even when the breeding water is immediately drained from the aquaculture tank. Like shrimp farms in Shrimp Farm, it is possible to supply water pressure while dissolving oxygen in the purified breeding water by installing a motor part and oxygen supply device on the moving line without installing multiple motors and oxygen supply devices for each breeding water spraying device. There is an effect that can reduce the installation cost.

Description

Circulation filtering shrimp farm {Culturing apparatus for rearing shrimp having water circulation system}

The present invention relates to a circulating filtration shrimp farm, which consists of a purification tank and an aquaculture tank, and the components that make up the farm are simple, but the purification efficiency is not reduced even though the purification process is continuously drained from the culture tank. It relates to a circular filtration shrimp farm that is maintained and can reduce installation and maintenance costs.

Globally, the increase in food resources along with population growth is very important.In terms of protein supply among food resources, most of it was achieved through land meat supply through the livestock industry, but in the case of livestock, low productivity, mortality due to diseases, and manure Countermeasures against environmental pollution are necessary. Thus, the role of protein supply is increasingly being overcome through aquatic products.

However, the fisheries aquaculture field is receiving intensive attention as the amount of fish caught has decreased worldwide due to the destruction of habitats and overfishing due to pollution of the marine environment. The aquaculture method is mainly flow-water, exponential, circulating filtration, and cage farming.

Korea's aquaculture system uses a continuous replacement system (CRS) or a continuous replacement system (CRS). A large amount of breeding water is required, and a large amount of breeding water used for breeding is discharged to the water system, causing environmental pollution and It becomes the main pollutant source of ecosystem destruction, and the amount of energy consumed for warming of new breeding water increases.

Recently, while regulations on effluent water from farms are becoming stronger, the development of systems that reduce or purify effluents generated in farms is becoming important. To prevent pollution, the development of a recirculating aquaculture system (RAS) and this A lot of research is also in progress.

The circulation filtration system enables high-density farming to increase productivity, and by reusing the breeding water required for farming, it is possible to operate with only a small quantity and save enormous power consumption for pumping.

Accordingly, a conventional circulation filtration system may consist of a breeding tank, a settling tank, a biological filtration tank, a foam separation tank, and a purified water storage tank. The breeding water used and drained from the breeding tank is introduced into the sedimentation tank, passed through a series of purification processes through a drum filter, a biological filtration tank, and a foam separation tank, and then stored in the purified water storage tank, and can be resupplied to the breeding tank. However, in the case of a conventional drum filter, the installation cost is expensive and the filter replacement is constantly required, which increases the operating cost.

On the other hand, shrimp is a type of crustacean, which is difficult to survive when the environment in which it lives is changed. In particular, in the shrimp land farm, the stocking water must always be supplied with purified water, which takes a lot of effort and time. If there is a problem in the process of circulating and purifying the used breeding water, there may be a case where the shrimp farmed in the tank cannot survive the environmental change and die in large quantities. Accordingly, the present invention is to provide a circulating filtration shrimp farm that can reuse breeding water in a farm and reduce water treatment costs.

Domestic Registration Patent No. 10-0706273 relates to a circulating filtration system, and in particular, it is disposed below the inside of the biological filtration tank, and is connected to the air supply device to supply air to the water, which constitutes the system. A circulating filtration aquaculture system with improved biofiltration efficiency and minimizing the space occupied by the filtration system due to the simplified components is disclosed. In Korean Patent Publication No. 1985-0000912, a primary drainage pipe with a large number of drainage holes is installed in the center of a circular culture tank, and a mesh plate with holes inclined by 45° toward the center is installed inside the culture tank. Barley prawns that install low-lying boards at regular intervals on the mesh panel, form a sandy bottom thereon, and allow the water drained through the secondary drainage pipe extended to the bottom of the culture tank to be circulated through the circulation filter and heating device to the circulation inlet pipe. Disclosed is a high-density aquaculture equipment of Korean Patent No. 10-0969829 describes a fish farming system in which fish eggs are hatched and then grown into parent fish, and the fish eggs are prepared by optimally creating water quality and temperature in the fish egg incubator. After hatching, it is cultivated in stages according to the growth of the hatched in the multi-stage culture tank and grows as a parent, while feed is automatically quantitatively inputted into the culture tank in the feeder, and the discharged water discharged from the culture tank is discharged. Regarding the fish farming system in which the water temperature and water quality required for aquaculture are filtered and reused in the circulating water filtration system, the raw water and discharged water required for fish farming are significantly reduced, and the water temperature and water quality are maintained while continuously circulating. It is starting. Domestic Registration Patent No. 10-1831962 includes an outer frame and a water tank installed in the outer frame and in which a plurality of sensors are installed, and a plurality of top and bottom stacking type for rearing marine organisms including fish or fish and shellfish in the tank. nursery; Disclosed is a circulating filtration system and a circulating filtration method for a block-type prefabricated farm comprising a bottom surface and a water tank having at least one filter installed on the bottom surface and having a water outlet.

The present invention prevents the death of farmed shrimp due to changes in the water quality environment and allows the reuse of the breeding water without exchange of new breeding water. It is intended to provide a circulating filtration shrimp farm that does not reduce the purification efficiency.

The circulation filtration shrimp farm of the present invention has one or more aquaculture tanks in which aquaculture organisms are stocked and raised; A collection tank in which the breeding water of the culture tank is drained and stored; It may consist of a purification tank in which the breeding water stored in the collecting tank is moved to perform a purification process.

A drainage hole is formed at the bottom of the culture tank to drain the breeding water from the culture tank by being connected to the collection tank, a drain line for moving the breeding water stored in the collection tank to the purification tank, one end is connected to the bottom of the purification tank and the other end is resupplied. A moving line connected to the line and installed with a motor part and an oxygen generator, and the other end connected to the moving line and extended to the aquaculture tank along the length of the aquaculture tank to spray purified breeding water with saturated oxygen and constant water pressure. It may be made up of a resupply line that can be done.

The purification tank has a polygonal bottom of the tank surrounded by an outer wall of the tank and a water tank is opened to form a storage space therein, and the storage space has at least one partition wall spaced apart from each other in the front and rear directions. It may be formed.

A drain line for supplying the breeding water stored in the water collection tank is installed on either side of the purification tank before and after the water tank, and in the order of the storage space formed at the shortest distance from the drain line, the first separation unit, the second separation unit, the third separation unit, It may be made of a collection unit.

A plurality of fixed ropes are installed in the upper opening of the first separation unit, spaced in the left and right directions in the front and rear directions, and at least one fixed bed filter material is fixed to the fixed rope, and a fluid bed filter material is provided at the second separation unit. It may be additionally installed, and a plurality of filter plates may be installed in the third separation unit.

The filter plate may have a filter frame formed in a square frame structure having a size corresponding to the width of the septic tank, and a filter thread is installed inside the filter frame.

The present invention exerts a filtration effect through the fixed bonus part in the first separation part installed in the front of the purification tank, and the second separation part installed in the rear part removes sludge and untreated substances separated from the first separation part in the front end. As a result of the exertion of this effect, a stable purification effect can be secured, so the purification efficiency does not decrease even in the purification process according to the immediate drainage of the breeding water from the aquaculture tank, and a motor and oxygen supply device are installed for each breeding water spraying device like a conventional shrimp farm. By installing a motor unit and an oxygen supply device in the moving line without installing multiple units, oxygen can be dissolved in the purified breeding water and water pressure can be supplied at the same time, thereby reducing the cost of installing a farm.

1 shows a schematic diagram of a circulation filtration farm of the present invention.
2 shows a schematic diagram of a purification water tank of the present invention.
3 shows a first separating part of the present invention.
4 shows a second separating part of the present invention.
5 shows a third separating part of the present invention.
6 shows a water collecting tank of the present invention.

Hereinafter, a detailed description of the accompanying drawings related to the circular filtration shrimp farm of the present invention will be described.

1 shows a schematic diagram of a circulation filtration farm of the present invention. The circulation filtration farm of the present invention is provided with one or more aquaculture tanks 200 capable of breeding cultured organisms; A collection tank 300 in which the breeding water of the culture tank is drained and stored; The breeding water stored in the water collecting tank moves to the purification water tank 100 via the drain line 10; A moving line 20 having one end connected to the bottom of the purification tank and the other end connected to a resupply line, and having a motor unit 30 and an oxygen generator installed to move the purified breeding water to the resupply line; The resupply line 40 is connected to the breeding tank so that the breeding water can be resupplied to the aquaculture tank.

Hereinafter, in the description of the present invention, for convenience, the breeding water discharged from the aquaculture tank and moved to the purified water tank is referred to as treated water, and the breeding water that has been purified in the purified water tank and moved to the aquaculture tank is referred to as recycled water.

2 shows a schematic diagram of a purification water tank of the present invention. The purification tank 100 of the present invention has a tank structure that is generally installed in an onshore farm where a polygonal tank bottom is surrounded by an outer wall of the tank and an upper portion is opened to form a storage space therein. Drainage lines 10 are installed on either side before and after the purification tank to supply treated water discharged from the aquaculture tank and stored in the collection tank.

One or more partition walls are spaced apart from each other in the front and rear direction of the purification tank, so that the purification tank may have one or more storage spaces. The one or more storage spaces may be formed of a first separation unit 110, a second separation unit 120, a third separation unit 130, and a collection unit 140, centering on the drain line installation unit. Separator 1, 2, and 3 block the floor at intervals of 5 meters so that the sludge generated from the circulating water can be well separated to the outside, and each separation unit regularly cleans the sludge collected on the floor through the discharge pipe valve. . Ammonia and nitrite are removed by installing a fixed bed filter media and a fluid bed filter material inside each separating part.

3 shows a first separating part of the present invention. In the upper opening of the first separating part of the present invention, a plurality of fixing ropes 111 are installed spaced apart in the left and right directions in the front and rear directions, and at least one fixed bed filter member 112 is fixed to the fixing rope.

The fixed bonus material is a contact type water treatment device and is installed so that the fixed porous filtering media is filled in the net case and infiltrated into the treated water supplied from the drain line. The fixed bed filter material is formed in a form in which fine fibers, etc., which are usually installed in water treatment, are unwound in an irregular shape and woven into a gathered shape, and the yarn itself has an electric charge, so it has a useful effect in catching and decomposing fine solids.

The material and shape of the fixed bonus material of the present invention are not limited, and may be formed in a loop type, a porous support having a predetermined size, a coil type, a ring type, etc. in which fiber filaments made of synthetic resins are entangled.

In general, the fixed bed filter material does not flow due to water flow, but it may be damaged due to friction with the water tank due to continuous water pressure.The fixed bed filter material according to the present invention is installed in a shape in which the fixed bed filter material is filled in a net case and is installed in plural. It is possible to prevent the breakage and separation of the fixed rope, and there is an effect that the filter material can be replaced more easily by collecting the fixed rope.

In general, when the area of the flow path changes rapidly, a dead zone where water is almost stagnated occurs in the corner far from the water flow, and if the filter medium, which takes on flow resistance, is filled with the first separator, it is easily clogged. Can be. In addition, as the time passes, the flow path is gradually clogged as the sludge accumulates between the filter media, and a channel phenomenon may occur where the treated water flows only to less clogged areas.

Therefore, the fixed bed filter media unit of the present invention is installed at a predetermined interval through a fixed lobe, so that the treated water flows in only one direction to the fixed bed filter media, unlike the previous case, where the filtering effect occurs, the treated water in the 360-degree direction of the fixed bed filter media. Since the penetration of the dead zone is possible, the above-described dead zone and channel phenomenon can be prevented, and the contact surface area of the treated water can be increased.

Contact water treatment consisting of a fixed bed filter material removes organic matter from the front end by making the residence time of the contact tank about 1 hour in order to intensively reduce BOD and SS according to the treatment characteristics, and a relatively long residence time to increase the treatment efficiency of nitrogen and phosphorus. After that, nitrogen and phosphorus can be further treated at the rear stage.

4 shows a second separating part of the present invention. A plurality of fluidized bed filter media are installed in the second separation unit 120 of the present invention. The fluidized bed media unit 121 may be formed to surround a ring or ball-shaped fluidized media with a mesh-shaped pocket. Since the fluid bed filter material and the mesh bag are made of PE material with a specific gravity of 1 or less, they are suspended in the breeding water storage space and filtered while flowing. The fluidized bed media to be filled in the net is generally known, and may be filled with a molded product or activated carbon manufactured by injection of plastic, but the material and structure are not limited.

Additionally, a large amount of microorganisms may be fixed in the fixed bed filter media and the fluid bed filter material, thereby reducing the BOD material. According to the present embodiment, the effect of increasing filtration efficiency is exerted by using the fixed bed filter media, and the contact efficiency with the treated water through the proliferation and flow of microorganisms for removing BOD materials can be increased by using the fluidized bed filter media.

In addition, the filtration effect through the fixed-bed filter media is exerted in the first separating portion of the front end, and the second separating portion in the rear exerts the effect of removing sludge and untreated substances desorbed from the first separating portion of the front end. It can secure a stable purification effect.

5 shows a third separating part of the present invention. A plurality of filter plates may be installed in the third separating part 130 of the present invention. The filter plate 131 may be formed by installing a filter frame 132 formed in a square frame structure having a size corresponding to the width of the sides before and after the septic tank, and a filter thread 133 inside the filter frame. One or more are installed facing up.

As an embodiment of the present invention, the filter yarn may be formed such that loop yarns made of nylon are continuously twisted around the core portion composed of polyethylene rope yarn, and the loop yarn may be fixed to the core portion by a fixed yarn formed of polypropylene multi-fiber yarn. Each of the core portion, the loop yarn, and the fixed yarn for fixing the gore portion and the loop yarn may be replaced with fibers suitable for use and function, and the filter may be installed to fill the inside of the filter frame.

The filter plates are installed at regular intervals in the channel by overlapping 7 to 10 plates. By maximizing the contact surface area of the filter yarn, the removal of sludge due to the flow of treated water is minimized, so that clogging does not occur and a large amount of sludge is attached for a short time, thereby improving the ability to purify treated water.

The treated water, which has been purified through the third separation unit, is stored in the collection unit as recycled water. A moving line 20 is installed at the bottom of the collection unit to connect the resupply line and the other end. A motor unit 30 and an oxygen supply device are installed in the moving line so that the regenerated water stored in the collecting unit has oxygen and a constant water pressure, and moves to the resupply line.

One or more resupply lines may be installed on the moving line. One end of the resupply line is connected to the moving line, the other end is installed extending along the length of the culture tank, and a plurality of breeding water spraying devices may be installed on the side. A venturi may be installed as an embodiment of the breeding water injection device.

In general, shrimp farms should have at least one breeding water spraying device installed to enable rotation of the breeding water in the culture tank in consideration of the migratory habits of shrimp, and the injection pressure and oxygen of the breeding water can be dissolved for each breeding water spraying device. Since the device must be installed so that a plurality of motors and oxygen dissolvers have been installed in the existing shrimp farm.

As an embodiment of the present invention, one end of the moving line connected to the collection part is formed to have a diameter of 200 mm, and the other end connected to the resupply line is formed to be 300 mm, and in the resupply line, a pipe having a diameter of 100 mm is moved by the 300 mm. It consists of multiple installations on the line. In addition, the motor unit is implemented as an underwater pump capable of supplying power of 20 horsepower, so that the oxygen supplied from the oxygen supply device and the regenerated water having a constant water pressure can be resupplied to the aquaculture tank.

The diameter of the resupply line is relatively small compared to the moving line, so it can increase the water pressure of the breeding water spraying device of the resupply line.As before, it moves without installing several motors and oxygen supply devices for each breeding water spraying device. By installing a motor part and an oxygen supply device on the line, oxygen can be dissolved in the purified breeding water and water pressure can be supplied at the same time, reducing the cost of installing a farm.

The culture tank may have a conventional structure in which a polygonal tank bottom is surrounded by an outer wall of the tank and an upper portion is opened, so that a space in which aquaculture organisms and breeding water are stocked. A drain 201 may be installed at the bottom of the tank bottom of the culture tank so that the breeding water can move to the collection tank. Aquaculture organisms referred to in the present invention may be specifically shrimp.

6 shows a water collecting tank of the present invention. The water collection tank 300 includes a water level control pipe 302 connected to the drain, a discharge pipe 303 capable of discharging the breeding water stored in the water collection tank to the outside, and a drain line connected to the water supply line to move the stored breeding water to the septic tank. A drain port 301 is installed.

The water level control pipe is a pipe structure, and one or more discharge holes are formed on the side in the up and down directions, and the amount of breeding water discharged from the aquaculture tank can be controlled by closing and opening the discharge holes. A drainage hole is formed at the bottom of the collection tank, so that the breeding water used in the culture tank can be continuously moved to the purification tank.

Hereinafter, an experimental example of a water quality environment after installation of a farm having the above-described configuration of the present invention and its results will be described.

As a shrimp farming test using the circular filtration shrimp farm according to the present invention, the test was conducted over 6 months by designing and installing facilities in Wando-eup (Daeyang Fisheries), Wando-gun, Jeollanam-do. General water quality (water temperature, DO, pH, salinity) was investigated daily, nutrients (ammonia, nitrite) and alkalinity were investigated weekly or if necessary, and the growth rate was measured by collecting body length and weight by collecting 10-20 animals once a week.

As a result of daily investigation of the general water quality of the breeding water in the breeding tank, the water temperature was maintained at an average of 28 degrees, the DO was maintained at an average of 6.5mg/L, the pH was at an average of 7.2, and the salinity was maintained at an average of 32Psu. In addition, as a result of weekly measurement of nutrients, ammonia is an average of 0.3mg/L, nitrite is an average of 5mg/L, and alkalinity is an average of 100mg/L per day, and the breeding water managed by the circulation filtering breeding device of the present invention The water quality value of was found to be very suitable for shrimp farming.

Looking at the stocking and survival rate of shrimp seedlings using the circular filtration shrimp farm according to the present invention, it was found that the survival rate of shrimp grown during the 135 days of stocking and shipping reached 80%, and the stocking density maintained 20 kg per pyeong. . In general, considering that biofloc farmed shrimp has a survival rate of 60% and 15kg per unit area, it shows high efficiency, and the circular filtration shrimp farming according to the present invention is a very excellent aquaculture technology considering that it can grow three crops per year. I can.

Seedling, survival rate and stocking density Weight(g) Number of days Stocking density (heads/m2) % Survival 0.006 0 302 100 0.06 15 281 93 0.8 30 271 90 2 50 265 88 7 80 259 86 15 100 253 84 20 120 247 82 25 135 241 80

The present invention can resupply purified water suitable for shrimp farming to the aquaculture tank without installing an existing expensive water treatment device, as well as circulating filtration shrimp that can reduce energy required for spraying efficiency when resupplied to the aquaculture tank. By providing a farm, it has the potential to be used in the industry because it helps to increase the effort and aquaculture efficiency by improving the technology of fishermen related to aquaculture.

10: drain line 20: moving line
30: motor unit 40: resupply line
100: purification water tank 110: first separation unit
111: fixed rope 112: fixed bed filter media
120: second separation unit 121: fluid bed filter material unit
130: third separation unit 131: filter plate
132: filter frame 133: filter yarn
200: culture tank 201: drainage line
300: collection tank 301: drain
302: water level control pipe 303: discharge pipe

Claims (5)

One or more aquaculture tanks in which cultured organisms are stocked and raised are installed; A collection tank in which the breeding water of the culture tank is drained and stored; In the circulating filtration farm comprising a purified water tank in which the breeding water stored in the collecting tank is moved and purified;
The purification tank has a polygonal bottom of the tank surrounded by an outer wall of the tank and the top is opened to form a storage space therein, and the storage space is separated by one or more partition walls in the front and rear directions, and the inside of the purification tank stores one or more breeding water. Formed into space;
A drain line for supplying breeding water stored in the water collection tank is installed on either side of the purification tank before and after the purification tank, and a first separation unit made of a fixed bed filter material in the order of a storage space formed at the shortest distance from the drain line, a fluid bed filter material A purification tank is formed in the order of a second separation unit made of, a third separation unit made of a filter plate, and a collection unit;
In the upper opening of the first separating part, a plurality of fixed ropes are spaced apart in left and right directions in the front and rear directions, and at least one fixed bed media part is vertically fixed at a predetermined interval in the fixed rope, and the second separating part In the circulating filtration farm, characterized in that the fluidized bed filtration material is filled in a mesh bag, and a filter plate is installed in the third separator The circulating filtration farm according to claim 1, wherein the filter plate has a filter frame having a square frame structure having a side surface corresponding to the width of the purification tank, and a filter thread inside the filter frame. delete delete delete

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