Pseudosciaena crocea fry cultivation device adopting biofloc

Abstract

The invention relates to the technical field of fry breeding decontamination, in particular to a large yellow croaker fry breeding device adopting biological floccules. The invention discloses a large yellow croaker fry breeding device adopting biological floccules. The large yellow croaker fry breeding device comprises a breeding pond, biological flocs are placed in the culture pond; a pool bottom sewage suction device, a sewage suction pipe and a central sewage outlet are also arranged in the culture pool; the pool bottom dirt suction device comprises a plurality of single dirt suction devices which are connected with one another, the single dirt suction devices are connected with the dirt suction pipe, a crawler-type rotating wheel is arranged at the tail end of the fixed frame, and the crawler-type rotating wheel drives the whole dirt suction device to move around the bottom of the culture pool after being electrified. The larimichthys crocea fry cultivation device adopting the biological floccules has the advantages that multiple times of pollution suction without manual work in one day can be achieved, excrement and residual feed of larimichthys crocea fries, sedimentation biological floccules and the like are discharged out of a water body in the first time, the pressure of biological purification is reduced, the water changing amount is reduced to the maximum extent, and the production cost is saved.

Description

Technical Field

[0001] The invention relates to the technical field of fish fry cultivation and pollution removal, and in particular to a large yellow croaker fry cultivation device using biological flocs. Background Art

[0002] Yellow croaker is the largest marine aquaculture fish in my country, and also the marine fish with the largest seedling raising volume. In order to reduce diseases and improve the survival rate of fry, yellow croaker fry is raised using off-season factory-based high-density seedling raising technology, that is, raising the temperature in spring to cultivate yellow croaker fry. It is usually necessary to heat the seawater temperature from 12 degrees to 25 degrees, which is most suitable for the growth of yellow croaker fry. The energy consumption required to heat the seawater is very huge. At the same time, the operation intensity of technical workers in factory-based intensive breeding is also relatively high. In order to save costs, how to reduce the amount of water change and the labor intensity of workers is an important direction for saving costs and improving efficiency. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a large yellow croaker fry cultivation device using biological flocs which can reduce the amount of water change and save production costs.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a large yellow croaker fry cultivation device using biological flocs, comprising a cultivation pool; biological flocs are placed in the cultivation pool; the cultivation pool is also provided with a pool bottom suction device, a sewage suction pipe and a central sewage outlet;

[0005] The bottom sewage suction device includes a plurality of mutually connected single sewage suction devices, each of which is connected to a sewage suction pipe, and the sewage suction pipe is connected to a rotating sewage discharge head of a central sewage discharge port. The single sewage suction device is fixed by a fixed frame, and a crawler wheel is provided at the end of the fixed frame. When the crawler wheel is powered on, it drives the entire sewage suction device to move in a circle at the bottom of the culture tank.

[0006] Furthermore, in the above-mentioned large yellow croaker fry cultivation device using biological flocs, protrusions and grooves are respectively provided on both sides of the single-unit sewage absorber, and adjacent single-unit sewage absorbers are connected by mortise and tenon joints of the protrusions and grooves.

[0007] Furthermore, in the above-mentioned large yellow croaker fry cultivation device using biological flocs, a brush groove is provided on the bottom surface of the single sewage suction device, and a soft silicone brush is provided on the brush groove.

[0008] Furthermore, in the above-mentioned large yellow croaker fry cultivation device using biological flocs, the single sewage suction device is provided with a sewage suction port running through from top to bottom, and the sewage suction port is connected to the sewage suction pipe.

[0009] Furthermore, in the above-mentioned large yellow croaker fry cultivation device using biological flocs, a circular track is provided on the side wall of the cultivation pool to cooperate with the sewage suction device at the bottom of the pool, and a mobile motor is arranged on the circular track, and the mobile motor drives the entire sewage suction device to move in circles at the bottom of the cultivation pool.

[0010] Furthermore, in the above-mentioned large yellow croaker fry cultivation device using biological flocs, the preparation method of the biological flocs is: scrape the oily soil layer from the upper layer of the tidal flat, add nitrifying bacteria liquid, and add nitrifying bacteria culture medium for cultivation, and the obtained biological flocs are used for large yellow croaker fry cultivation.

[0011] Furthermore, in the above-mentioned large yellow croaker fry cultivation device using biological flocs, the nitrifying bacteria culture medium includes seawater and various components added to the seawater, and the various components include: ammonium sulfate ((NH4)2SO4): 500g / ton, ferrous sulfate (FeSO4): 30g / ton, sodium dihydrogen phosphate (NaH2PO4): 1000g / ton, magnesium sulfate (MgSO4·7H2O): 30g / ton, and calcium chloride (CaCl2): 500g / ton.

[0012] The beneficial effect of the present invention is that the present invention uses biological flocs to absorb ammonia nitrogen and nitrite in the water body by beneficial bacteria to purify the water quality. A part of the formed biological flocs is ingested by the fry, and a part is settled at the bottom of the fry pond, and the bottom sewage suction device automatically sucks the sewage out of the water body, thereby reducing the pressure on the water quality of the fry pond. The large yellow croaker fry cultivation device using biological flocs of the present invention can achieve several times of sewage suction per day without manual labor, and discharge the excrement and residual bait of the large yellow croaker fry and the settled biological flocs from the water body at the first time, reducing the pressure of biological purification, minimizing the amount of water change, and saving production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A top view of a large yellow croaker fry cultivation device using biological flocs according to a specific embodiment of the present invention;

[0014] Figure 2 A side view of a large yellow croaker fry cultivation device using biological flocs according to a specific embodiment of the present invention;

[0015] Figure 3 A schematic diagram of the structure of a bottom sewage suction device of a large yellow croaker fry cultivation device using biological flocs according to a specific embodiment of the present invention;

[0016] Figure 4 It is a structural schematic diagram of a single sewage suction device of a large yellow croaker fry cultivation device using biological flocs according to a specific embodiment of the present invention;

[0017] Description of labels:

[0018] 1. Cultivation pool; 11. Central sewage outlet;

[0019] 2. Sewage suction device at the bottom of the pool; 21. Sewage suction pipe; 22. Single-body sewage suction device; 221. Sewage suction port; 23. Fixed frame; 24. Crawler-type rotating wheel;

[0020] 3. Circular track; 4. Mobile motor. DETAILED DESCRIPTION

[0021] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0022] Please refer to Figures 1 to 4 , a large yellow croaker fry cultivation device using biological flocs, comprising a cultivation pool; biological flocs are placed in the cultivation pool 1; the cultivation pool 1 is also provided with a pool bottom suction device 2, a sewage suction pipe 21 and a central sewage outlet 11;

[0023] The bottom sewage suction device 2 includes a plurality of interconnected single sewage suction devices 22, each of which is connected to a sewage suction pipe 21, and the sewage suction pipe 21 is connected to a rotating sewage discharge head of a central sewage discharge port 11. The single sewage suction device 22 is fixed by a fixed frame 23, and a crawler wheel 24 is provided at the end of the fixed frame 23. When the crawler wheel 24 is powered on, it drives the entire sewage suction device to move in a circle at the bottom of the culture tank 1.

[0024] From the above description, it can be seen that the beneficial effect of the present invention is that the present invention uses biological flocs to absorb ammonia nitrogen and nitrite in the water body by beneficial bacteria to purify the water quality. A part of the formed biological flocs is ingested by the fry, and a part is settled at the bottom of the seedling pool, and the bottom sewage suction device 2 automatically sucks the sewage out of the water body, reducing the pressure on the water quality of the seedling pool. The large yellow croaker fry cultivation device using biological flocs of the present invention can achieve zero manual several times of sewage suction in a day, and discharge the excrement and residual bait of the large yellow croaker fry and the settled biological flocs from the water body at the first time, reducing the pressure of biological purification, minimizing the amount of water change, and saving production costs.

[0025] Furthermore, in the above-mentioned large yellow croaker fry cultivation device using biological flocs, protrusions and grooves are respectively provided on both sides of the single-unit sewage absorber 22, and adjacent single-unit sewage absorbers 22 are connected by mortise and tenon joints of the protrusions and grooves.

[0026] As can be seen from the above description, the pool bottom suction device is composed of several single-body suction devices 22 spliced ​​together to adapt to pools of different widths.

[0027] Furthermore, in the above-mentioned large yellow croaker fry cultivation device using biological flocs, a brush groove is provided on the bottom surface of the single sewage suction device 22, and a soft silicone brush is provided on the brush groove.

[0028] As can be seen from the above description, the soft silicone brush further scrapes the pool bottom to clean the adhered dirt. There can be two brush slots, each of which contains a brush, and the pool bottom can be cleaned when the dirt suction device moves.

[0029] Furthermore, in the above-mentioned large yellow croaker fry cultivation device using biological flocs, the single sewage suction device 22 is provided with a sewage suction port 221 penetrating from top to bottom, and the sewage suction port 221 is connected to the sewage suction pipe 21 .

[0030] Furthermore, in the above-mentioned large yellow croaker fry cultivation device using biological flocs, a circular track 3 is provided on the side wall of the culture tank 1 to cooperate with the bottom sewage suction device 2 of the pool, and a mobile motor 4 is arranged on the circular track 3. The mobile motor 4 drives the entire sewage suction device to move in a circle at the bottom of the culture tank 1.

[0031] As can be seen from the above description, when the crawler wheel at the bottom of the pool fails, the mobile motor can be connected to the end of the sewage suction device at the bottom of the pool.

[0032] Furthermore, in the above-mentioned large yellow croaker fry cultivation device using biological flocs, the preparation method of the biological flocs is: scrape the oily soil layer from the upper layer of the tidal flat, add nitrifying bacteria liquid, and add nitrifying bacteria culture medium for cultivation, and the obtained biological flocs are used for large yellow croaker fry cultivation.

[0033] Furthermore, in the above-mentioned large yellow croaker fry cultivation device using biological flocs, the nitrifying bacteria culture medium includes seawater and various components added to the seawater, and the various components include: ammonium sulfate ((NH4)2SO4): 500g / ton, ferrous sulfate (FeSO4): 30g / ton, sodium dihydrogen phosphate (NaH2PO4): 1000g / ton, magnesium sulfate (MgSO4·7H2O): 30g / ton, CaCl2: 500g / ton.

[0034] Embodiment 1

[0035] Please refer to Figures 1 to 4 , a large yellow croaker fry cultivation device using biological flocs, comprising a cultivation pool; biological flocs are placed in the cultivation pool 1; the cultivation pool 1 is also provided with a pool bottom suction device 2, a sewage suction pipe 21 and a central sewage outlet 11;

[0036] The bottom sewage suction device 2 includes a plurality of interconnected single sewage suction devices 22, each of which is connected to a sewage suction pipe 21, and the sewage suction pipe 21 is connected to a rotating sewage discharge head of a central sewage discharge port 11. The single sewage suction device 22 is fixed by a fixed frame 23, and a crawler wheel 24 is provided at the end of the fixed frame 23. When the crawler wheel 24 is powered on, it drives the entire sewage suction device to move in a circle at the bottom of the culture tank 1.

[0037] The bottom sewage suction device 2 is composed of several individual sewage suction devices 22 spliced ​​together to adapt to pools of different widths. The sewage suction device is connected to a sewage suction pipe 21, and the sewage suction pipe 21 is connected to a rotating sewage discharge head of the central sewage discharge port 11. The individual sewage suction devices 22 are fixed by a fixed frame 23, and the end of the fixed frame 23 is a crawler wheel 24. After the crawler wheel 24 is powered on, it can drive the entire sewage suction device to move in a circle on the bottom of the pool.

[0038] Another backup system for driving the bottom suction device 2 is a circular track 3 installed on the top wall of the pool, on which a mobile motor 4 is arranged. When the underwater motor at the bottom of the pool fails, the mobile motor 4 can be connected to the end of the bottom suction device 2, and the bottom suction device 2 can be driven to operate normally by the mobile motor 4 on the track above the pool. The crawler wheel 24, the track motor, and the electromagnetic valve installed at the drain outlet of the pool are controlled by the central control system. When the electromagnetic valve is opened, the motor drives the bottom suction device 2 to rotate, and the water at the bottom of the pool flows out of the pool through the suction device, and the dirt at the bottom of the pool is also taken out, achieving the effect of automatic suction.

[0039] The design of the monomer suction device 22 is as follows Figure 4 As shown, the monomer suction devices 22 are connected through the mortise and tenon structure on the side wall, and the suction port 221 on each monomer suction device 22 is connected to the suction pipe 21. The monomer suction device 22 can be provided with two brush grooves for placing brushes, and the brushes are used to clean the bottom when the suction device moves. A soft film is installed between the two brushes for further scraping the bottom of the pool after the brushes. The monomer suction devices 22 are connected in a row, placed at the bottom of the pool, and connected to the fixed frame 23. The end of the fixed frame 23 is connected to the underwater crawler wheel 24, which is equipped with a motor and a battery. There is an antenna on the underwater wheel that is connected to the water surface for communication and charging. When it is necessary to suck sewage, the electromagnetic valve of the water outlet is opened with a signal to open the electromagnetic valve, and the underwater crawler wheel 24 is operated at the same time. The underwater wheel starts to rotate, driving the entire underwater pool bottom suction device 2 to rotate around the bottom of the pool, and the sewage at the bottom of the pool flows out through the sewage outlet to complete the suction work.

[0040] Cultivation of biofloc:

[0041] 1. Cultivation of active mud

[0042] Scrape the "oily" soil layer from the upper layer of the beach, which is mainly clay with very fine particles and contains a certain amount of organic debris. Put the scraped clay into a 200-mesh silk screen, put it into a conical fiberglass barrel filled with seawater and shake it until the clay in the bag is basically washed into the seawater, and the remaining clay with larger particles is discarded. Place an air disk at the bottom of the conical fiberglass barrel to fully explode the air. About 20 grams of clay can be washed into each liter of seawater. Add nitrifying bacteria liquid to the FRP barrel, the number of bacteria is more than 10 billion / ml, add 100ml of bacteria liquid per ton of water, the water temperature is 25℃, add nitrifying bacteria culture medium to the conical FRP barrel according to the amount of water, and add the following components according to the amount of seawater: ammonium sulfate ((NH4)2SO4): 500g / ton, ferrous sulfate (FeSO4): 30g / ton, sodium dihydrogen phosphate (NaH2PO4): 1000g / ton, magnesium sulfate (MgSO4·7H2O): 30g / ton, CaCl2: 500g / ton. After 14 days of cultivation, the suspended mud water in the conical FRP barrel can be dispersed into 5 identical FRP barrels, clay is added to the new barrel at 20g / ton of new water, and nitrifying bacteria culture medium is added. The water temperature of the new barrel is 25℃. After 7 days of cultivation, the culture can be further expanded or the active mud can be used for large yellow croaker seedlings.

[0043] Use of active mud

[0044] In the large yellow croaker nursery pond, add activated mud at the rate of 1 liter per ton of water, and add new activated mud every day according to the amount of water changed.

[0045] Activated sludge is added to the water body of yellow croaker seedlings. The activated sludge is centered on micro-particle mud and nitrifying bacteria attached to it. It can absorb nutrients in the water and rapidly proliferate the bacterial community. When the bacterial community centered on micro-particle mud develops to a certain extent, it will form bioflocs, which can be used as biological bait for fry, and bacterial protein can supplement the lack of nutrients in the feed. When the bioflocs grow further, they will sink to the bottom of the pond due to their own weight and be discharged from the system by the bottom sewage suction device. Starting from the 20th day of yellow croaker, according to the daily excretion frequency of yellow croaker fry, the discharge frequency and time interval of the bottom sewage suction device are controlled by the central control system, so that the residual bait and feces in the breeding pond can be removed in the first time. At the same time, the suspended bioflocs can convert nutrients into biological bait for reuse, and the unusable ones will form large sediments that sink to the bottom of the pond and be discharged from the system in time to optimize the water quality of the system.

[0046] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A large yellow croaker fry cultivation device using biological flocs, characterized in that: It comprises a cultivation pool; biological flocs are placed in the cultivation pool; the cultivation pool is also provided with a bottom sewage suction device, a sewage suction pipe and a central sewage outlet; The bottom sewage suction device includes a plurality of mutually connected single sewage suction devices, each of which is connected to a sewage suction pipe, and the sewage suction pipe is connected to a rotating sewage discharge head of a central sewage discharge port. The single sewage suction device is fixed by a fixed frame, and a crawler wheel is provided at the end of the fixed frame. When the crawler wheel is powered on, it drives the entire sewage suction device to move in a circle at the bottom of the culture tank.

2. The large yellow croaker fry cultivation device using biological flocs according to claim 1 is characterized in that: The two sides of the monomer sewage suction device are respectively provided with a protrusion and a groove, and the adjacent monomer sewage suction devices are connected through the protrusion and the groove mortise and tenon.

3. The large yellow croaker fry cultivation device using biological flocs according to claim 1 is characterized in that: The bottom surface of the monomer dirt suction device is provided with a brush groove, and a soft silica gel brush is provided on the brush groove.

4. The large yellow croaker fry cultivation device using biological flocs according to claim 3 is characterized in that: The single-body sewage suction device is provided with a sewage suction port which penetrates up and down, and the sewage suction port is communicated with the sewage suction pipe.

5. The large yellow croaker fry cultivation device using biological flocs according to claim 1 is characterized in that: The side wall of the culture tank is provided with an annular track cooperating with the sewage suction device at the bottom of the tank, and a mobile motor is arranged on the annular track. The mobile motor drives the entire sewage suction device to move in a circle at the bottom of the culture tank.

6. The large yellow croaker fry cultivation device using biological flocs according to claim 1 is characterized in that: The preparation method of the biological flocs is as follows: an oily soil layer is scraped from the upper layer of the beach, a nitrifying bacteria liquid is added, and a nitrifying bacteria culture medium is added for culturing, and the obtained biological flocs are used for breeding large yellow croaker seedlings.

7. The large yellow croaker fry cultivation device using biological flocs according to claim 6 is characterized in that: The nitrifying bacteria culture medium includes seawater and various components added to the seawater, and the various components include: ammonium sulfate: 500g / ton, ferrous sulfate: 30g / ton, sodium dihydrogen phosphate: 1000g / ton, magnesium sulfate: 30g / ton, and calcium chloride: 500g / ton.

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