Circulating culture system for hatching grouper fries

Abstract

The utility model provides a circulating culture system for hatching grouper fries. The circulating culture system comprises a hatching culture barrel, a temperature control device, a physical filtering device, a protein separator, a microorganism filtering device and a PEM ozone device. The marine fish inland breeding device can achieve marine fish inland breeding, solves the pain point of outdoor grouper fry hatching, and accumulates organic waste generated by microalgae, live bait and fry in the water body in the grouper fry hatching process, ammonia nitrogen (NH3 / NH4) generated by ammoniation and nitrite (NO2) generated by nitration when the grouper fry hatching operation is carried out indoors. Huge injury is caused to the fish fries.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the aquaculture technical field, concretely relates to a kind of cyclic culture system of hatching grotto fish fry. BACKGROUND

[0002] With the increase of global consumers' demand for high-quality marine products, grotto fish, as a representative of high-end seafood products, the market demand continues to rise, and the grotto fish population in natural waters is affected by overfishing, habitat destruction and other factors, and the population is declining. Artificial hatching and breeding can help alleviate this problem. The success of artificial breeding not only ensures market supply, but also drives the development of grotto fish breeding and related industries, bringing significant economic benefits to coastal areas.

[0003] Grotto fish fry hatching is an important part of the grotto fish breeding industry, and its success or failure directly affects the healthy development of the entire industry chain. With the progress of science and technology and the continuous improvement of breeding technology, the efficiency and quality of grotto fish fry hatching will be further improved. As one of the main ways of grotto fish fry hatching, flow hatching of grotto fish fry has the advantages of removing metabolic waste, providing sufficient dissolved oxygen, and simulating natural environment. However, this hatching method requires continuous water supply and oxygenation, consuming a large amount of water and electricity resources, increasing the operating cost of breeding. In addition, in natural environment, the water temperature of flow water is easily affected by external temperature, season and other factors, making it difficult to maintain the stable water temperature range required for grotto fish fry hatching. In addition, although flow hatching of grotto fish fry can reduce the sharp rise of ammonia nitrogen (NH3 / NH4) and nitrite (NO2) and other toxins produced by grotto fish fry after winging, as the fry grows, it gradually cannot use flow water to solve the problem of ammonia nitrogen (NH3 / NH4) and nitrite (NO2) accumulation. As a result of ammonia nitrogen (NH3 / NH4) and nitrite (NO2) accumulation, grotto fish fry produces "nervous necrosis virus NNV (Nervous Necrosis Virus)", "rainbow virus" and "pathogenic vibrio" to invade young fish, causing significant economic losses. SUMMARY

[0004] To solve the above technical problems, the utility model provides a cyclic culture system for hatching grotto fish fry, which can realize inland breeding of marine fish, solve the pain points of outdoor grotto fish fry hatching, and run grotto fish hatching operation indoors. Due to the organic waste produced by microalgae, live bait and fry in the water during the grotto fish fry hatching process, ammonia nitrogen (NH3 / NH4) and nitrite (NO2) are accumulated due to ammonification and nitrification, causing great damage to the fry.

[0005] The technical solution disclosed by the utility model is as follows:

[0006] The utility model provides a circulating aquaculture system of hatching grotto fish fry, including hatching culture bucket, temperature control device, physical filter device, protein separator, microorganism filter device, PEM ozone device, the culture water is from hatching culture bucket, and after the processing of physical filter device, protein separator, microorgan organism filter device, PEM ozone device in turn, return to hatching culture bucket again, temperature control device is composed of air source heat pump and heating pipe, and heating pipe is inserted into hatching culture bucket.

[0007] Preferably, a natural light source is arranged above the hatching culture bucket, with an illumination of 6000Lux-8000Lux.

[0008] Preferably, the physical filter device adopts a centrifugal filter, preferably a horizontal centrifugal filter, with a pore size of 15-38μm.

[0009] Preferably, the hatching culture bucket is made of PP polypropylene or FRP glass steel, with a conical bottom.

[0010] Preferably, the PEM ozone device uses pure water as raw material and solid-state noble metal polymer as electrolyte, and obtains ozone through low-voltage electrolysis in combination with a cation exchange mode.

[0011] Preferably, a transfer bucket and a circulating pump are arranged between the protein separator and the microorganism filter device, and the circulating pump controls the speed of the culture water entering the microorganism filter device to ensure the reaction time of the culture water in the microorganism filter device.

[0012] Compared with the prior art, the utility model has the following technical advantages:

[0013] (1) The technical scheme disclosed by the utility model can realize the recycling of seawater resources. In the hatching process, the culture water is treated by physical and biological methods and then flows into the hatching culture bucket for recycling. No water change is needed throughout the process, and no tail water is discharged. Compared with the traditional aquaculture method, the utility model can reduce the water resource consumption by 95%. More importantly, the utility model ensures the cleanliness and suitable salinity of the hatching water, reasonably controls the light intensity and period, simulates the natural light change, and prevents the occurrence of diseases by periodically disinfecting the hatching pool with ozone in the circulating water aquaculture water body, so as to ensure that the water body parameters during hatching are controllable, simulate the natural habitat of grotto fish fry, and help the normal growth and development of grotto fish fry.

[0014] (2) The utility model discloses can be in the indoor operation stone bream hatching operation, because the microalgae of the hatching process of stone bream fry in water, live bait and the organic waste produced by fry, because the ammonia nitrogen (NH3 / NH4) of ammonification and the nitrite (NO2) of nitrification are accumulated, cause the huge damage of fry. Therefore, the dry horizontal centrifugal filter and the protein filter used in the utility model filter out the large particles and suspended organic matter in the first time, reduce the accumulation of organic matter in water, reduce the burden of microbial filtration reaction device, and the transfer barrel and circulating pump are arranged between the protein separator and the microbial filtration device, the circulating pump adjusts the speed of the aquaculture water into the microbial filtration device, controls the residence time of the aquaculture water in the microbial filtration device, so that bacteria convert all ammonia nitrogen in aquaculture water into nitrogen by biochemical reaction, and the efficient operation removes ammonia nitrogen, nitrite and other toxins to reduce the toxin content in water. In the hatching process of stone bream fry, no water or less water can be executed, the small water body is controlled in the controllable range of various parameters, the variable of the hatching process of stone bream fry is reduced, and the success rate of the hatching of stone bream fry is greatly improved.

[0015] (3) The utility model discloses can carry out water temperature regulation when the outside temperature changes, and ensure that the water temperature control is at 29±0.5 DEG C in the hatching process of fry, because the toxin in water is removed by the system device, so the work load of temperature control device is small, and the energy consumption is low, and the effect of ozone sterilization is obvious to the small hatching water, so that the water quality, water temperature, illumination and pathogen of stone bream fry in the hatching process are all controlled in the range, and the success rate of the hatching of stone bream fry is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the schematic diagram of the connection of various components in the utility model

[0017] Among them: 1, hatching breeding barrel 2, air source heat pump 3, heating pipe 4, horizontal centrifugal filter 5, protein separator 6, microbial filtration device 7, switch valve 8, PEM ozone device 9, transfer barrel 10, circulating pump 11, light source lamp. DETAILED DESCRIPTION

[0018] The utility model will be further explained in connection with specific embodiment and drawing.

[0019] As Figure 1The utility model discloses a kind of cyclic aquaculture systems of hatching trachinotus ovatus fry, including hatching cultivation bucket 1, horizontal centrifugal filter 4, protein separator 5, microbial filter device 6, PEM ozone device 8, hatching cultivation bucket 1, horizontal centrifugal filter 4, protein separator 5, microbial filter device 6, PEM ozone device 8, hatching cultivation bucket 1 are sequentially connected, form a cycle.Hatching cultivation bucket 1 is PP polypropylene or FRP glass steel material, bottom is conical shape.

[0020] In actual operation process, when monitoring index such as the toxin content of aquaculture water, solid pollutant content etc. is overproof, open switch valve 7 at the bottom of hatching cultivation bucket 1, after aquaculture water flows out from hatching cultivation bucket 1, sequentially enter horizontal centrifugal filter 4, protein separator 5, microbial filter device 6, PEM ozone device 8 and handle, then return to hatching cultivation bucket 1, carry out repeated utilization, when aquaculture water is handled in system cycle in the utility model and until monitoring index reaches set requirement, close switch valve 7.Temperature control device is composed of air source heat pump 2 and heating pipe 3, heating pipe 3 extends into hatching cultivation bucket 1, air source heat pump 2 absorbs heat from air, provides energy for circulating water in heating pipe 3, controls temperature in hatching cultivation bucket 1 at 26~29 ℃.The utility model is further provided with imitation natural light source lamp 11 in the upper portion of hatching cultivation bucket 1, illuminance is 6000~8000Lux.The filter mesh size in horizontal centrifugal filter is 15~38 μm.

[0021] Protein separator 4 in the utility model utilizes the surface tension of bubble in seawater small, can adsorb various granular dirt mixed in water and soluble organic matter.Produce a large amount of bubbles by needle brush pump, these bubbles take protein and other dirt in water to water surface and form foam, exclude the liquid collected to these foam, effectively reduce the protein content in water, control the generation of harmful substances.

[0022] The utility model is further provided with transfer barrel 9 and circulating pump 10 between protein separator 5 and microbial filter device 6, and circulating pump 10 controls the speed of aquaculture water into microbial filter device 6, guarantees the reaction time of aquaculture water in microbial filter device 6.Bacteria convert ammonia nitrogen into nitrogen by biochemical reaction, and its efficient operation removes ammonia nitrogen, nitrite and other toxins to reduce the toxin content in water body.

[0023] PEM ozone device 8, PEM electrolytic method ozone generator takes pure water as raw material, solid-state noble metal polymer as electrolyte, combines cation exchange mode, obtains ozone by low-voltage electrolysis mode, does not need any auxiliary material and additive, and the ozone concentration of output is as high as 20% (weight ratio, 250-280 mg / L), and the ozone gas accompanying material of output is oxygen, without any secondary pollution.

Claims

1. A recirculating aquaculture system for hatching grouper fry, characterized in that: The incubation and breeding barrel, temperature control device, physical filter device, protein separator, microorganism filter device and PEM ozone device are arranged in sequence, and the breeding water flows out from the incubation and breeding barrel, is treated in the physical filter device, protein separator, microorganism filter device and PEM ozone device in sequence, and then returns to the incubation and breeding barrel.

2. The recirculating aquaculture system for hatching juvenile goliath grouper according to claim 1, wherein: The natural light source is arranged above the incubation and breeding barrel, and the illumination is 6000-8000 Lux.

3. The recirculating aquaculture system for hatching juvenile stonefish according to claim 1, wherein: The physical filter device is a horizontal centrifugal filter, and the aperture is 15-38 microns.

4. The recirculating aquaculture system for hatching juvenile stone bass according to claim 1, wherein: The incubation and breeding barrel is made of PP polypropylene or FRP glass steel, and the bottom is conical.

5. The recirculating aquaculture system for hatching juvenile stone bass of claim 1, wherein: The PEM ozone device uses pure water as raw material, solid noble metal polymer as electrolyte, and obtains ozone through low-voltage electrolysis in combination with cation exchange mode.

6. The recirculating aquaculture system for hatching juvenile stone bass of claim 1, wherein: The transfer barrel and circulating pump are arranged between the protein separator and microorganism filter device, the circulating pump controls the speed of breeding water entering the microorganism filter device, and the reaction time of breeding water in the microorganism filter device is ensured.

Images