KR102568440B1 - Culturing apparatus for rearing shrimp having water circulation system - Google Patents

Abstract

In the present invention, one or more aquaculture tanks are installed in which aquaculture organisms are stocked and raised; A collection tank in which the breeding water of the aquaculture tank is drained and stored; By providing a circulation filtration type shrimp farm consisting of a purification tank in which the breeding water stored in the water collection tank is moved and purified, the filtering effect through the fixed bonus material is exerted in the first separation unit installed at the front of the purification tank, and the rear end In the 2nd separation unit, the effect of removing sludge and untreated substances detached from the 1st separation unit at the front end is exhibited, thereby securing a stable purification effect as a whole, so that the purification efficiency does not decrease even when the breeding water is immediately drained from the aquaculture tank. As in shrimp farms, it is possible to dissolve oxygen in the purified breeding water and supply water pressure at the same time by installing a motor and oxygen supply device in the moving line without installing several motors and oxygen supply devices for each breeding water spray device. It has the effect of reducing installation cost.

Description

Circulation filtration purifier having a plurality of continuous filtration units {Culturing apparatus for rearing shrimp having water circulation system}

The present invention relates to a circulating filtration type purification device, and more specifically, the components constituting a farm consisting of a purification tank and aquaculture tank are simple, but the purification efficiency is not reduced even if the water is continuously drained from the aquaculture tank and the purification process is performed. It relates to a circulation filtration type purifier having a plurality of continuous filtration units capable of maintaining aquaculture efficiency and reducing installation and maintenance costs.

The increase in food resources along with population growth is very important worldwide, and most of the protein supply among food resources has been achieved through land meat supply through livestock farming, but in the case of livestock farming, low productivity, mortality due to disease, and Measures against environmental pollution are needed. Therefore, the role of protein supply is increasing in ways to overcome through seafood.

However, due to the destruction of habitats and overfishing caused by pollution of the marine environment worldwide, the amount of catches has decreased, and the aquaculture sector is being focused on. As for the methods of aquaculture, flow-through, still-water, circulation filtration, and cage culture are mainly practiced.

The aquaculture system in Korea uses a continuous replacement system (CRS), which uses flowing water or continuous breeding water exchange, and requires a large amount of breeding water. It becomes a major source of pollution in the destruction of the ecosystem, and the consumption of energy for heating new breeding water also increases significantly.

Recently, as regulations on discharge water from farms have been strengthened, development of a system to reduce or purify discharge water generated within farms is becoming important. A lot of research is also going on.

The circulation filtration system not only increases productivity by enabling high-density aquaculture, but also reuses the breeding water necessary for aquaculture, enabling operation with only a small amount of water and reducing enormous power consumption for pumping water.

Accordingly, a typical circulating filtration system may include a breeding tank, a sedimentation 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 flows into the sedimentation tank, goes through a series of purification processes through a drum filter, biological filtration tank and foam separation tank, and then is stored in the purified water storage tank and can be supplied back to the breeding tank. However, in the case of a conventional drum filter, installation costs are high and filter replacement is continuously required, which increases operating costs.

On the other hand, shrimp is a type of crustacean, and when the environment in which it lives changes, it is difficult to survive and the farming method is difficult. In particular, in shrimp farms, the breeding water must always be supplied with purified water, which requires a lot of effort and time. If there is a problem in the process of circulating and purifying the used breeding water, shrimp farming in the tank may fail to overcome environmental changes and die in large quantities. Accordingly, an object of the present invention is to provide a circulation filtration type purifier capable of reusing breeding water in a farm and reducing water treatment costs.

Korean Patent Registration No. 10-0706273 relates to a circulating filtration aquaculture system, in particular, it is disposed on the lower side of the biological filtration tank and is connected to an air supply device to supply air to the water, including an aeration pipe to make up the system. The space occupied by the filtration system is minimized because the components are simplified, and a circulation filtration aquaculture system with increased biofiltration efficiency is disclosed. In Korean Patent Publication No. 1985-0000912, a primary drainage pipe with multiple drainage holes is installed in the center of a circular aquaculture tank, and a mesh plate with holes slanted at an angle of about 45 ° toward the center is installed inside the aquaculture tank. A low plate is installed on the mesh plate at regular intervals, a sand bed is formed on it, and the water drained through the secondary drain pipe connected to the bottom of the aquaculture tank passes through the circulation filter and heating device to circulate through the circulation inlet pipe. It discloses a high-density aquaculture apparatus of Korean Registered Patent No. 10-0969829 is a technology related to a fish farming system in which fish eggs are hatched and then grown into parent fish for farming. After hatching, it is grown step by step according to the growth of the offspring hatched in the multi-stage aquaculture tank and grows to the parent fish, while the feeder automatically doses feed into the aquaculture tank, and Regarding a fish aquaculture system that not only drastically reduces the amount of raw water and discharged water required for fish farming, but also maintains the water temperature and quality while continuously circulating by circulating and reusing filtered water at the water temperature and quality required for aquaculture in a circulating water filtration device are starting Korean Patent Registration No. 10-1831962 includes an external frame and a water tank installed within the external frame and having a plurality of sensors installed therein, and breeding marine organisms including fish or shellfish in the water tank. nursery; Disclosed is a circulation filtration system and a circulation filtration method of a block-type prefabricated fish farm including a tank having a water outlet and having a bottom surface and one or more filters installed on the bottom surface.

The present invention prevents shrimp from dying due to changes in the water quality environment and reuses the breeding water without exchanging new breeding water. It is intended to provide a circulating filtration type purification device in which purification efficiency is not reduced.

The circulation filtration type purifier of the present invention includes one or more aquaculture tanks in which aquaculture organisms are stocked and raised; A collection tank in which the breeding water of the aquaculture tank is drained and stored; It may consist of a purification tank in which the breeding water stored in the collection tank is moved and a purification process is performed.

A drain is formed at the bottom of the aquaculture tank to drain the breeding water in the aquaculture tank, and a drain line for moving the breeding water stored in the aquaculture tank to the purification tank, one end connected to the bottom of the purification tank and the other end resupply. A moving line connected to the line and equipped with a motor and an oxygen generator, one end connected to the moving line and the other end extended to the aquaculture tank along the length of the aquaculture tank to spray purified breeding water with saturated oxygen and a certain water pressure. It may be made of a resupply line that can be done.

In the water purification tank, an outer wall of the water tank surrounds the bottom of the polygonal water tank and the water supply is opened so that a storage space is formed inside the water purification tank. may be formed.

A drain line for supplying the breeding water stored in the water collection tank is installed on either side of the front or rear end of the water purification tank, and in order of storage spaces formed at the shortest distance from the drain line, the first separation unit, the second separation unit, the third separation unit, It may consist of a collection unit.

A plurality of fixed ropes are installed in the upper opening of the first separation unit, spaced apart in the left and right directions in the front and rear directions, and at least one fixed bed filter medium is fixed to the fixed rope, and the fluidized bed filter medium is formed in the second separation unit. A part may be installed, and a plurality of filter plates may be installed in the third separation part.

The filter plate may be formed by installing a filter frame formed in a rectangular frame structure having a size corresponding to the width of the septic tank, and filter yarns installed inside the filter frame.

In the first separation unit installed at the front of the purification tank, the filtration effect via the fixed phase medium is exerted, and in the second separation unit installed at the rear, the sludge and untreated materials removed from the first separation unit at the front are removed. As a result, a stable purification effect can be secured overall, so that the purification efficiency does not decrease even in the purification process according to the immediate drainage of the breeding water in the aquaculture tank, and a motor and oxygen supply device are installed for each breeding water spray device like in the existing shrimp farm. By installing a motor unit and an oxygen supply device on the moving line without installing several, it is possible to dissolve oxygen in the purified breeding water and supply water pressure at the same time, which has the effect of reducing the farm installation cost.

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

Hereinafter, a detailed explanation will be given with accompanying drawings related to the purifying device of the circulation filtration shrimp farm of the present invention.

1 shows a schematic diagram of the circulation filtration farm of the present invention. The circulation filtration farm of the present invention is equipped with one or more aquaculture tanks 200 in which aquaculture organisms can be stocked and raised; A collection tank 300 in which the breeding water of the aquaculture tank is drained and stored; The breeding water stored in the collecting tank moves to the purification tank 100 via the drainage line 10; A movement line 20 having one end connected to the bottom of the purification tank and the other end connected to the resupply line, and having a motor unit 30 and an oxygen generator installed thereto to move the purified breeding water to the resupply line; The re-supply line 40 is connected to the breeding tank so that the breeding water can be re-supplied to the breeding tank.

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

Figure 2 shows a schematic diagram of the purification tank of the present invention. The purification tank 100 of the present invention has a tank structure generally installed in land farms in which an outer wall of the tank surrounds the bottom of the polygonal tank and the upper part is open to form a storage space therein. A drain line 10 capable of supplying treated water discharged from the aquaculture tank and stored in the collecting tank is installed on one side before and after the purification tank.

One or more partition walls are spaced apart from each other in the front and rear directions of the purified water tank, so that the purified water tank may form one or more storage spaces. The one or more storage spaces may include a first separator 110, a second separator 120, a third separator 130, and a collection unit 140 centering on the drain line installation part. The 1st, 2nd, and 3rd separation units 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 drain pipe valve. . A fixed-bed filter medium and a fluid-bed filter medium are installed inside each separator to remove ammonia and nitrous acid.

3 shows the first separator of the present invention. In the upper opening of the first separator of the present invention, a plurality of fixed ropes 111 are installed in the front and rear directions and spaced apart in left and right directions, and one or more fixed bed filter media 112 are fixed to the fixed rope.

The fixed bed media is a contact type water treatment device, and is installed so that the fixed bed filtering media (Fixed porous filtering media) is filled in the net case and infiltrates the treated water supplied from the drain line. The fixed-bed filter medium is composed of fine fibers, etc., which are usually installed in water treatment, unraveled in irregular shapes and woven into a fixed form, and the yarn itself is charged, 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 shape in which fiber filaments made of synthetic resins are entangled, a porous support having a predetermined size, a coil shape, a ring shape, and the like.

Normally, the fixed bed filter medium does not flow by the water flow, but may be damaged due to friction with the water tank under continuous water pressure. It is possible to prevent breakage and separation of the fixed bed, and it is possible to replace the filter media more easily by collecting the fixed rope.

Normally, when the area of the flow path changes rapidly, a dead zone is generated in the corner far from the water flow where the water is almost stagnant. It can be. In addition, as time passes, sludge accumulates between the filter media, gradually clogging the flow path, and a channel phenomenon in which the treated water flows only to less clogged areas may occur.

Accordingly, since one or more fixed bed filter units of the present invention are installed at regular intervals through a fixed bed medium, the treated water flows in only one direction to the fixed bed filter medium, unlike the conventional case in which the filtration effect occurs, Since the penetration 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 type water treatment consisting of a fixed bed filter media removes organic substances at the front end by making the residence time of the contact tank about 1 hour to intensively reduce BOD and SS according to the treatment characteristics, and to increase the treatment efficiency of nitrogen and phosphorus by relatively long residence time After that, nitrogen and phosphorus can be additionally treated at the rear end.

4 shows the second separator of the present invention. A plurality of fluidized bed filter media are installed in the second separator 120 of the present invention. The fluidized bed filter unit 121 may be formed such that a mesh bag surrounds a ring or ball-shaped fluidized media. Since the fluid bed filter material and the mesh bag are made of PE material with a specific gravity of 1 or less, it filters while floating and flowing in the breeding water storage space. The fluidized bed filter medium filled inside the mesh is commonly known and may be filled with a molded product manufactured by injection molding of plastic or activated carbon, but the material and structure are not limited.

Additionally, a large amount of microorganisms may be immobilized in the fixed-bed filter medium and the fluid-bed filter medium, whereby an effect of reducing BOD substances may be exerted. According to this embodiment, the effect of increasing the filtration efficiency is exhibited by using the fixed-bed filter medium, and the contact efficiency with the treated water through the growth and flow of microorganisms for the removal of BOD substances can be increased by using the fluidized-bed filter medium.

In addition, in the first separation unit at the front end, a filtration effect via the stationary filter medium is exerted, and in the second separation unit at the rear end, the effect of removing sludge and untreated substances detached from the first separation unit at the front end is exhibited, so that the overall A stable purification effect can be secured.

5 shows a third separator of the present invention. A plurality of filter plates may be installed in the third separator 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 front and rear sides of the septic tank, and filter yarns 133 installed inside the filter frame, and the side faces cover the front and rear ends. One or more are installed facing

As an embodiment of the present invention, the filter yarn may be formed such that a nylon loop yarn is continuously twisted around a core portion composed of polyethylene rope yarn, and the loop yarn may be fixed to the core portion by a fixing yarn formed of polypropylene multifilament yarn. The core part and the loop yarn and the fixing yarn for fixing the gore part and the loop yarn may be replaced with fibers suitable for each purpose and function, and the filter may be installed to fill the inside of the filter frame.

The filter plate is installed by overlapping 7 to 10 plates and spaced apart at regular intervals in the waterway. The filter thread maximizes the contact surface area and minimizes the separation phenomenon of the sludge according to the flow of the treated water, so that clogging does not occur and a large amount of sludge is attached in a short time, thereby improving the ability to purify the treated water.

The treated water purified through the third separator is stored in the collection unit as reclaimed water. A moving line 20 connected to the resupply line and the other end is installed at the bottom of the collecting unit. A motor unit 30 and an oxygen supply device are installed in the moving line so that the regeneration water stored in the collection unit has oxygen and a certain water pressure and moves to the resupply line.

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

In general, at least one breeding water spray device should be installed in a shrimp farm to allow rotation of the breeding water in the aquaculture tank in consideration of the migratory habit of shrimp. A plurality of motors and oxygen dissolvers were installed in the existing shrimp farm because the device had to be installed so that

As an embodiment according to the present invention, one end of the movement line connected to the collection unit has a diameter of 200 mm and the other end connected to the re-supply line has a diameter of 300 mm, and the re-supply line has a pipe with a diameter of 100 mm and a movement of 300 mm. A plurality of them are installed on the line. In addition, the motor unit is implemented as a submersible pump capable of supplying power of 20 horsepower, so that oxygen supplied from the oxygen supply device and regenerated water having a certain water pressure can be re-supplied to the aquaculture tank.

The diameter of the re-supply line is relatively small compared to the moving line, so it is possible to increase the injection water pressure of the breeding water injector in the re-supply line. By installing a motor part and an oxygen supply device in the line, it is possible to dissolve oxygen in the purified breeding water and supply water pressure at the same time, thereby reducing farm installation costs.

The aquaculture tank may have a conventional structure in which the outer wall of the tank surrounds the bottom of the polygonal tank and the upper part is open to form a space in which aquaculture organisms and breeding water are stocked. A drain 201 may be installed at the bottom of the tank of the aquaculture tank so that breeding water can move to the collecting tank. Aquaculture organisms referred to in the present invention may be specifically shrimp.

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

The water level control pipe has a pipe structure, and one or more discharge holes are formed on the side in the upper and lower directions, and the amount of breeding water drained from the aquaculture tank can be controlled by closing and opening the discharge hole. A drain is formed at the bottom of the collecting tank so that the breeding water used in the aquaculture tank can continuously move to the purification tank.

Hereinafter, experimental examples and results of the water quality environment after installation of the farm having the above configuration of the present invention are described as follows.

As a shrimp farming test using the circulation filtration type shrimp farm according to the present invention, the test was conducted over 6 months by designing and facilities in Wando-eup (Daeyang Fisheries), Wando-gun, Jeollanam-do. General water quality (water temperature, DO, pH, salinity) was investigated daily, nutrients (ammonia, nitrous acid) and alkalinity were investigated weekly or when necessary.

As a result of daily inspection of the general water quality of the breeding water in the breeding tank, the average water temperature was maintained at 28 degrees, the DO was maintained at an average of 6.5mg/L, the PH was maintained 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 averaged 0.3mg/L, nitrite averaged 5mg/L, and alkalinity averaged 100mg/L per day. The water quality values of were found to be very suitable for shrimp farming.

Looking at the stocking and survival rate of shrimp seedlings using the circulatory filtration shrimp farm according to the present invention, the survival rate of shrimp grown for 135 days, the shipping period after stocking the seedlings, reached 80%, and the stocking density was maintained at 20 kg per pyeong. . Considering that the normal biofloat shrimp is 15kg per unit area with a survival rate of 60%, it shows high efficiency. can

Seed stocking, survival rate and stocking density weight (g) farming days Stocking density (head/m2) Survival rate % 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 reduce the energy required for spraying efficiency when resupplying to the aquaculture tank. By providing a farm, there is industrial applicability because it helps to increase the efforts and aquaculture efficiency through skill improvement of fishermen related to aquaculture.

10: drainage line 20: movement line
30: motor unit 40: resupply line
100: purification tank 110: first separator
111: fixed rope 112: fixed phase filtering unit
120: second separation unit 121: fluid phase filtering unit
130: third separation unit 131: filter plate
132: filter frame 133: filter thread
140: collection unit
200: aquaculture tank 201: drainage line
300: catchment tank 301: drain
302: water level control pipe 303: discharge pipe

Claims (4)

One or more aquaculture tanks in which aquaculture organisms are stocked and raised are installed; A collection tank in which the breeding water of the aquaculture tank is drained and stored; It consists of a purification tank in which the breeding water stored in the collecting tank is moved and purified,
The water purification tank surrounds the bottom of the polygonal water tank with an outer wall of the water tank, and the upper part is open to form a storage space therein. It is formed as a storage space,
A drain line for supplying the breeding water stored in the water collection tank is installed on either side of the front or rear end of the purification tank, and the storage space formed at the shortest distance from the drain line is installed in the order of the fixed bed filter media containing the filter media, the fluidized bed filter media, or A plurality of filtration units made of filter plates are installed in succession, and a water purification tank is formed in the order of the collection unit in the last storage space of the filtration unit,
Circulation filtration type purifier having a plurality of continuous filtration units, characterized in that microorganisms are fixed to the fixed bed filter medium and the fluidized bed filter medium constituting the fixed bed filter medium unit and the fluidized bed filter medium unit. delete delete delete