CN115745183A - Tail water recycling system for high-density aquaculture - Google Patents
Tail water recycling system for high-density aquaculture Download PDFInfo
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- CN115745183A CN115745183A CN202310031530.1A CN202310031530A CN115745183A CN 115745183 A CN115745183 A CN 115745183A CN 202310031530 A CN202310031530 A CN 202310031530A CN 115745183 A CN115745183 A CN 115745183A
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- 238000004064 recycling Methods 0.000 title claims abstract description 25
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000001301 oxygen Substances 0.000 claims abstract description 32
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- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 15
- 238000009826 distribution Methods 0.000 claims description 14
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- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 8
- 238000005276 aerator Methods 0.000 claims description 5
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention discloses a high-density aquaculture tail water recycling system which comprises a micro-filter, a transition tank, a biological filler tank, a trickling oxygen-increasing biological wadding bed device, a brush tank, an ultraviolet disinfection tank and a water body oxygen-increasing sterilization device. The aquatic product high-density culture tail water recycling system improves the removal rate of harmful substances and the content of dissolved oxygen in circulating water and can reduce the discharge amount of culture water by reasonably matching low-cost and high-efficiency facility equipment and applying corresponding matching technology.
Description
Technical Field
The invention relates to the technical field of aquaculture tail water treatment, in particular to a high-density aquaculture tail water recycling system.
Background
With the improvement of the living standard of people, the demand of aquatic products is increased year by year, however, in recent years, the attention of national ecological environment protection and the utilization of water resources are increasingly tense, the cultivation in natural water areas is also limited, the aquaculture industry faces transformation and upgrade, the traditional soil pond cultivation mode is gradually eliminated, and the industrial workshop cultivation of aquatic products is developed into a main cultivation mode of the industry.
The water quality of the culture pond is polluted due to the excrement, the residual bait, the remains of dead organisms, sundries on the surface of the water body and the like in the high-density culture process of the culture pond, harmful pathogens are bred, particularly feed residues, fish excrement, debris or microbial decomposition products and the like are accumulated on the bottom layer of the culture pond, so that the dissolved oxygen content of the water body in the culture pond is reduced, the harmful substances are increased, if the water quality is not cleared in time, the water quality is deteriorated quickly, the cultured organisms die, and the water is required to be changed and drained timely. In order to save water resource utilization and ensure the quality and quality safety of aquatic products, water treatment equipment is gradually adopted for cyclic treatment and reutilization of aquaculture tail water in many indoor cultivations. Application investigation and research find that the problems of low yield, poor quality, frequent diseases and the like of aquatic products are caused by the fact that the tail water treatment technology is not closed, the breeding diseases are not prevented in place and the production process flow is incomplete. In order to meet the requirements of people on environment-friendly high-quality aquatic products and improve the water resource utilization rate, the aquaculture yield and the economic benefit of aquaculture production, a set of aquatic product high-density aquaculture tail water recycling system needs to be designed.
Disclosure of Invention
The invention aims to provide an aquatic product high-density culture tail water recycling system, which can improve the removal rate of harmful substances and the content of dissolved oxygen in circulating water by reasonably matching low-cost and high-efficiency facility equipment and applying a corresponding matching technology, thereby ensuring that the system can achieve the aim of stable high yield in an aquatic product culture period and reducing the discharge amount of culture water.
In order to realize the purpose of the invention, the technical scheme is as follows:
a tail water recycling system for high-density aquaculture comprises a micro-filter, a transition tank, a biological filler tank, a trickling oxygen-increasing biological flocculation bed device, a brush tank, an ultraviolet disinfection tank and a water body oxygen-increasing sterilization device, wherein the biological filler tank comprises a primary biological filler tank and a secondary biological filler tank, active biological fillers and microporous aerators are placed in the primary biological filler tank and the secondary biological filler tank, the active biological fillers are purchased and used according to specifications, the bottom of one side of the primary biological filler tank is communicated with the transition tank through a grating communication port, and the bottom of the other side of the primary biological filler tank is communicated with the secondary biological filler tank through a grating water passing port; the trickling oxygenation biological wadding bed device is arranged above the biological filler pool and comprises a frame, a trickling pipe group is arranged at the top of the frame and communicated with a water delivery pipe, the water delivery pipe is connected with and provided with a water pump, the water pump is arranged at the bottom of the transition pool, a plurality of layers of biological wadding beds are arranged on the frame below the trickling pipe group at intervals, and water dripped from the trickling oxygenation biological wadding bed device falls back into the first-level biological filler pool; the upper part of the secondary biological filler tank, which is far away from the water passing port side of the grating, is communicated with a brush tank through the grating water outlet, brush filler is suspended in the brush tank, the lower part of the brush tank is communicated with an ultraviolet disinfection tank through the water passing port, and an ultraviolet disinfection lamp is installed in the ultraviolet disinfection tank; the water body oxygenation sterilization device comprises a cylindrical tank body and a liquid oxygen tank, wherein the cylindrical tank body is arranged on a support, the top of the cylindrical tank body is connected with a conveying pipe, the other end of the conveying pipe is provided with a submersible pump, the submersible pump is placed in an ultraviolet disinfection tank, a plurality of water distribution sieves are arranged in the cylindrical tank body at intervals, the water distribution sieves are arranged in an upper-lower layered structure, the peripheries of the water distribution sieves are connected with the inner wall of the cylindrical tank body, and a plurality of sieve holes are formed in the water distribution sieves; the lower part of the cylindrical tank body is connected with an ozone generator through an air pipe, the ozone generator is connected with a connecting liquid oxygen tank through an oxygen conveying pipe, and a switch is arranged on the oxygen conveying pipe; the bottom of the cylindrical tank body is connected with a drain pipe for supplying water to the culture pond; the water outlet of the micro-filter is communicated with the transition pool, the culture tail water of the culture pool is guided into the micro-filter through a tail water discharge pipe, and the culture tail water comprises top layer drainage and bottom sewage drainage.
Further preferred is: the bottom of the trickling oxygenation biological wadding bed device is provided with a guide plate which enables trickling water to flow back into the primary biological filler pond.
Further preferred is: the drip pipe group comprises a closed-loop water pipe frame, a plurality of drip pipes are connected in the closed-loop water pipe frame in an arrangement mode, and a plurality of drip holes are formed in the bottoms of the drip pipes. The drip pipe group with the structure has even drip, and is formed by connecting PVC pipes with corresponding sizes through joints.
Further preferred is: the frame be five layers of frames, the frame can use the angle steel welding to form, scribble the anti rust paint after welding, also can form with the galvanized pipe welding, the trickle nest of tubes is laid to the top layer, biological wadding bed is all laid to the four layers below.
Further preferably: the biological flocculent bed is a flocculent biological flocculent bed made of polyethylene material.
Further preferred is: the screen body of the water diversion screen is spherical, and the concave surface faces downwards when the water diversion screen is installed. The water distribution screen adopts a spherical shape, so that water in the cylindrical tank body can be better dispersed and dropped.
Further preferred is: an observation window is arranged on the lower tank body of the cylindrical tank body; and the observation window is provided with a barometer for displaying the air pressure in the cylindrical tank body. The working condition in the cylindrical tank body can be observed through the observation window.
Further preferred is: the air pipe is provided with a flow controller for controlling the flow of oxygen and ozone. The flow controller controls the flow of oxygen and ozone, so that the oxygen and the ozone enter the cylindrical tank body to be fully contacted with the dropped water drops, thereby ensuring that the pathogen of the water drops is killed and the content of dissolved oxygen is improved.
Further preferred is: the water discharging pipe is respectively connected with an upper water discharging pipe and a lower water discharging pipe, an upper water discharging switch is installed on the upper water discharging pipe, the upper water discharging pipe extends to the upper part of the culture pond, a lower water discharging switch is installed on the lower water discharging pipe, and the lower water discharging pipe extends to the bottom of the culture pond. And an upper water outlet switch or a lower water outlet switch is turned on according to the water inlet requirement of the culture pond.
Further preferred is: the bottom of the cylindrical tank body is in an inverted cone shape.
The aquatic product high-density aquaculture tail water recycling system adopts reasonable collocation of low-cost and high-efficiency facilities and equipment and application of corresponding matching technology, fully contacts with air for oxygenation, removes carbon dioxide and promotes the survival of nitrobacteria on a biological flocculation bed in the process of utilizing the trickle oxygenation biological flocculation bed device to circularly drip, nitrifying bacteria king is put in aquaculture tail water in a biological stuffing tank, aeration and oxygenation are continuously carried out, nitrifying bacteria communities are bred in small flaky biological stuffing in the biological stuffing tank for a long time, ammonia nitrogen and nitrite dissolved in the tail water are decomposed, the content of the ammonia nitrogen and the nitrite in water is reduced, water discharged from the biological stuffing tank enters a hairbrush tank, the water is treated again by the microbial flocculation of hairbrush biological stuffing, and the removal rate of harmful substances in circulating water is improved, the water after the microbial treatment enters an ultraviolet disinfection tank and is subjected to ultraviolet disinfection, the water is conveyed into a water body oxygen-increasing and sterilizing device, the water is fed back into the culture tank after being sterilized again through oxygen increasing and ozone, the discharge amount of culture water is reduced, the content of dissolved oxygen is improved, the system can reach the purpose of stable and high yield in an aquatic product culture period, the discharge amount of the culture water is reduced, the utilization rate of input products such as baits is improved on the basis of saving water resources, the utilization rate of the culture water is high, the yield benefit is high, the aquatic product quality is guaranteed, the tail water can be discharged up to the standard at any time in the whole culture period, the ammonia nitrogen content is not more than 0.2mg/L in the culture period, the nitrite concentration is less than 0.03mg/L, and the dissolved oxygen in the water body is more than 10 mg/L.
Drawings
FIG. 1 is a schematic diagram of the arrangement structure of the tail water recycling system for high-density aquaculture;
FIG. 2 is a process flow chart of recycling of tail water from high-density aquaculture;
FIG. 3 is a schematic structural view of a trickling aeration bio-floc bed apparatus;
FIG. 4 is an exploded view of FIG. 3;
FIG. 5 is a schematic diagram of the construction of a trickle tube bank;
the names corresponding to the sequence numbers in the figure are:
1. the device comprises a water pump, a water pipe, a frame, a biological flocculation bed, a closed-loop water pipe frame, a dropping pipe, a 7 dropping hole, a 8 microfilter, a 9 transition tank, a 10 primary biological filler tank, a 11 trickling and oxygen increasing biological flocculation bed device, a 12 guide plate, a 13 secondary biological filler tank, a 14 grid water outlet, a 15 active biological filler, a 16 microporous aerator, a 17 grid water outlet, a 18 grid communicating port, a 19 brush filler, a 20 brush tank, a 21 water outlet, a 22 ultraviolet disinfection tank, a 23 ultraviolet disinfection lamp, a 24 submersible pump, a 25 conveying pipe, a 26 support, a 27 cylindrical tank body, a 28 water dividing sieve, a 29 sieve mesh hole, a 30 air pressure gauge, a 31 observation window, a 32 liquid oxygen tank, a 33 switch, a 34, an ozone conveying pipe, a 35, an oxygen generator, a 36, an air pipe, a 37 flow controller, a 38, an upper water outlet switch, a 39, an upper water outlet pipe, a 40, a lower water outlet switch, a 41, a lower water outlet pipe, a tail tank, a 42 water outlet pipe, a water outlet pipe 44 and a drainage pipe.
Detailed Description
In order to make the technical solutions and advantages of the present application clearer, the following describes the technical solutions clearly and completely in combination with the embodiments.
Example 1
A tail water recycling system for high-density aquaculture comprises a micro-filter 8, a transition tank 9, a biological filler tank, a trickling oxygenation biological flocculation bed device 11, a hairbrush tank 20, an ultraviolet disinfection tank 22 and a water body oxygenation and sterilization device, wherein the biological filler tank comprises a primary biological filler tank 10 and a secondary biological filler tank 13, active biological fillers 15 and a microporous aerator 16 are arranged in the primary biological filler tank 10 and the secondary biological filler tank 13, the active biological fillers 15 are purchased and used according to specifications, the bottom of one side of the primary biological filler tank 10 is communicated with the transition tank 9 through a grid communication port 18, and the bottom of the other side of the primary biological filler tank 10 is communicated with the secondary biological filler tank 13 through a grid water passing port 17; the trickling oxygen-increasing biological wadding bed device 11 is arranged above the biological filler pool, the trickling oxygen-increasing biological wadding bed device 11 comprises a frame 3, a trickling pipe group is arranged at the top of the frame 3, the trickling pipe group is communicated with a water conveying pipe 2, the water conveying pipe 2 is connected with and provided with a water pump 1, the water pump 1 is arranged at the bottom of the transition pool 9, a plurality of layers of biological wadding beds 4 are arranged on the frame 3 below the trickling pipe group at intervals, and water dripped from the trickling oxygen-increasing biological wadding bed device 11 falls back into the primary biological filler pool 10; the upper part of the secondary biological filler tank 13, which is far away from the side of the grid water outlet 17, is communicated with a brush tank 20 through a grid water outlet 14, brush filler 19 is suspended in the brush tank 20, the lower part of the brush tank 20 is communicated with an ultraviolet disinfection tank 22 through a water outlet 21, and an ultraviolet disinfection lamp 23 is installed in the ultraviolet disinfection tank 22; the water body oxygenation sterilization device comprises a cylindrical tank body 27 and a liquid oxygen tank 32, wherein the cylindrical tank body 27 is installed on a support 26, the top of the cylindrical tank body 27 is connected with a conveying pipe 25, the other end of the conveying pipe 25 is provided with a submersible pump 24, the submersible pump 24 is placed in an ultraviolet disinfection pool 22, a plurality of water distribution sieves 28 are arranged in the cylindrical tank body 27 at intervals, the water distribution sieves 28 are arranged in an upper-lower layered structure, the peripheries of the water distribution sieves 28 are connected with the inner wall of the cylindrical tank body 27, and a plurality of sieve holes 29 are formed in the water distribution sieves 28; the lower part of the cylindrical tank body 27 is connected with an ozone generator 35 through an air pipe 36, the ozone generator 35 is connected with a connecting liquid oxygen tank 32 through an oxygen conveying pipe 34, and a switch 33 is arranged on the oxygen conveying pipe 34; the bottom of the cylindrical tank body 27 is in an inverted cone shape, and the bottom of the cylindrical tank body 27 is connected with a water discharge pipe 43 for supplying water to the culture pond 41; the water outlet of the micro-filter 8 is communicated with the transition tank 9, the breeding tail water of the breeding tank 41 is guided and discharged into the micro-filter 8 through a tail water discharge pipe 44, and the breeding tail water comprises top layer drainage and bottom sewage drainage.
The bottom of the trickling oxygenation biological flocculation bed device 11 is provided with a guide plate 12 which enables trickling water to flow back into the primary biological filler tank 10.
The drip pipe group comprises a closed-loop water pipe frame 5, a plurality of drip pipes 6 are connected in the closed-loop water pipe frame 5 in an arrangement mode, and a plurality of drip holes 7 are formed in the bottoms of the drip pipes 6. The frame 3 be five layers of frames, the frame can use the angle steel welding to form, scribble the anti-rust paint after welding, also can form with the galvanized pipe welding, the trickle nest of tubes is laid to the top layer, biological wadding bed 4 is all laid to the four layers below.
The biological floc bed 4 is a cotton-like biological floc bed made of polyethylene material.
The screen body of the water diversion screen 28 is spherical, and the concave surface faces downwards when the water diversion screen is installed.
An observation window 31 is arranged on the lower tank body of the cylindrical tank body 27; the observation window 31 is provided with an air pressure gauge 30 for displaying the air pressure in the cylindrical tank 27.
The gas pipe 36 is provided with a flow controller 37 for controlling the flow of oxygen and ozone.
The water discharging pipe 43 is respectively connected with an upper water discharging pipe 39 and a lower water discharging pipe 42, an upper water discharging switch 38 is installed on the upper water discharging pipe 39, the upper water discharging pipe 39 extends to the upper portion of the culture pond 41, a lower water discharging switch 40 is installed on the lower water discharging pipe 42, and the lower water discharging pipe 42 extends to the bottom of the culture pond 41. And opening an upper water outlet switch 38 or a lower water outlet switch 40 according to the water inlet requirement of the culture pond, and discharging top sewage or bottom sewage of the culture pond.
The working process of the tail water recycling system for high-density aquaculture comprises the following steps: the culture pond 41 is filled with new water for the first time until the water level is lower than the upper drainage port of the culture pond, water flows through the underground tail water discharge pipe 44 through the upper drainage port and is discharged into the micro-filter 8, after large-particle aquatic animal excrement, residual bait and sundries in water are filtered by the micro-filter 8, the water flows into the transition pond 9, after the water level is set, the micro-filter 8 is suspended from being filled with culture tail water, namely, the injection of the new water is stopped, nitrobacteria king is put in, the nitrobacteria king market is bought for use according to the specification, and the micro-filter 8 market is bought for installation and use. The water pump 1 is started to work, water in the transition pool 9 is pumped to the trickle tube set through the water conveying pipe 2, then trickles from the trickle tube set and sequentially falls onto the biological wadding bed 4 below, the water dripping process is fully contacted with air to remove carbon dioxide, the water drops back into the biological filler pool after passing through the biological wadding bed 4, the microporous aerator 16 is started to work and aerate, and the active biological filler 15 in the biological filler pool is pushed to roll in the water. When the ammonia nitrogen content of the water in the biological filler pool is lower than 0.2mg/L and the nitrite concentration is lower than 0.05mg/L, the micro-filter 8 is started again to feed culture tail water, i.e. new water is fed again, nitrobacteria king is fed in every 20 days, when the water level exceeds the set water level, the water in the biological filler pool is discharged into the brush pool 20 from the grid water outlet, the water enters the ultraviolet disinfection pool 22 after being treated again by the microorganism floc pattern of the brush filler 19, the new water is stopped being fed again after the set water level is reached, the water is pumped to the top of the cylindrical tank body 27 by the submersible pump 24 after being sterilized and disinfected by the ultraviolet disinfection lamp 23, the water is dispersed and dripped by the multi-layer water distribution sieve 28, then oxygen is fed in by the liquid oxygen tank 32 and ozone is fed in after being converted by the ozone generator 35, the water drops are fully contacted, the water drop pathogens are guaranteed to be killed, the content of dissolved oxygen is improved, the requirements of high dissolved oxygen and sterilization disease prevention of the high-density aquaculture water are met, the water drops finally gather at the bottom of the cylindrical tank body 27, water flow is formed through the water discharge pipe 43 and is injected into the aquaculture tank 41 through the upper water discharge pipe 39 and/or the lower water discharge pipe 42, the water flow enters the aquaculture tank to form circulation and lifting water level, deposited dirt such as fish manure, residual bait and residues is discharged from a discharge pipe at the bottom of the aquaculture tank along with tail water, the water flow is guided to flow into the micro-filter 8 through the tail water discharge pipe 44 to be subjected to solid-liquid separation, and the water is repeatedly circulated, so that the aeration and sterilization of the aquaculture water are completed, the circulating water treatment cost is reduced, and the industrial aquaculture economic benefit is improved. The system is started to work according to actual needs in the culture process, and continuous and uninterrupted work is not needed.
Application examples
The high-density aquaculture tail water recycling system in an embodiment of a certain aquaculture farm in Guihong Kong City is characterized in that 3000 pieces of micropterus salmoides are cultured in an industrial culture pond with 100 cubic meters of water, through approximately 10 months of culture, the output of the micropterus salmoides exceeds 4500 jin, the average specification of each tail reaches more than 1.5 jin, the survival rate is more than 98%, the dissolved oxygen of the aquaculture water in each stage is sufficient, the dissolved oxygen in water quality detection is maintained at more than 10mg/L, the ammonia nitrogen index and the nitrite index are maintained below 0.02 mg/L, the standard discharge requirement is met, fish pathogen infection death does not occur in the culture period, and the high-density aquaculture tail water recycling system does not need to be replaced and supplemented with new aquaculture water after normal operation. Before, the high-density aquaculture tail water recycling system is not adopted, the ammonia nitrogen content of the aquaculture water body generally exceeds 0.3mg/L, the nitrite concentration is more than 0.05mg/L, the dissolved oxygen in the water body is about 3mg/L, and the aquaculture water needs to be replaced and supplemented with new aquaculture water in less than 1 month.
The above description is not intended to limit the present application, and the present application is not limited to the above examples, and those skilled in the art should understand that they can make various changes, modifications, additions or substitutions within the spirit and scope of the present application.
Claims (10)
1. The utility model provides an aquatic products high density breed tail water cyclic utilization system which characterized in that: the biological filter comprises a micro-filter (8), a transition tank (9), a biological filler tank, a trickling and oxygen increasing biological wadding bed device (11), a brush tank (20), an ultraviolet disinfection tank (22) and a water body oxygen increasing and sterilizing device, wherein the biological filler tank comprises a primary biological filler tank (10) and a secondary biological filler tank (13), active biological fillers (15) and a microporous aerator (16) are respectively placed in the primary biological filler tank (10) and the secondary biological filler tank (13), the bottom of one side of the primary biological filler tank (10) is communicated with the transition tank (9) through a grid communicating port (18), and the bottom of the other side of the primary biological filler tank is communicated with the secondary biological filler tank (13) through a grid water passing port (17); the biological wadding bed device with the function of trickling and oxygen increasing is characterized in that the biological wadding bed device (11) with the function of trickling and oxygen increasing is arranged above a biological filler pool, the biological wadding bed device (11) with the function of trickling and oxygen increasing comprises a frame (3), a trickling pipe group is arranged at the top of the frame (3), the trickling pipe group is communicated with a water conveying pipe (2), the water conveying pipe (2) is connected with a water pump (1), the water pump (1) is arranged at the bottom of a transition pool (9), a plurality of layers of biological wadding beds (4) are arranged on the frame (3) below the trickling pipe group at intervals, and water dripped from the biological wadding bed device (11) with the function of trickling and oxygen increasing falls back into a primary biological filler pool (10); the upper part of the side, far away from the grid water passing port (17), of the secondary biological filling tank (13) is communicated with a brush tank (20) through a grid water outlet (14), brush filler (19) is hung in the brush tank (20), the lower part of the brush tank (20) is communicated with an ultraviolet disinfection tank (22) through a water passing port (21), and an ultraviolet disinfection lamp (23) is installed in the ultraviolet disinfection tank (22); the water body oxygenation sterilization device comprises a cylindrical tank body (27) and a liquid oxygen tank (32), wherein the cylindrical tank body (27) is installed on a support (26), the top of the cylindrical tank body (27) is connected with a conveying pipe (25), the other end of the conveying pipe (25) is provided with a submersible pump (24), the submersible pump (24) is placed in an ultraviolet disinfection pool (22), a plurality of water distribution sieves (28) are arranged in the cylindrical tank body (27) at intervals, the water distribution sieves (28) are arranged in an up-down layered structure, the periphery of each water distribution sieve (28) is connected with the inner wall of the cylindrical tank body (27), and a plurality of sieve holes (29) are formed in each water distribution sieve (28); the lower part of the cylindrical tank body (27) is connected with an ozone generator (35) through an air pipe (36), the ozone generator (35) is connected with a connecting liquid oxygen tank (32) through an oxygen conveying pipe (34), and the oxygen conveying pipe (34) is provided with a switch (33); the bottom of the cylindrical tank body (27) is connected with a water outlet pipe (43) for supplying water to the culture pond (41); the water outlet of the micro-filter (8) is communicated with the transition pool (9), and the culture tail water of the culture pool (41) is guided and discharged into the micro-filter (8) through a tail water discharge pipe (44).
2. The aquaculture tail water recycling system of claim 1, wherein: the bottom of the trickling oxygenation biological wadding bed device (11) is provided with a guide plate (12) which enables trickling water to flow back into the primary biological filler pool (10).
3. The aquaculture tail water recycling system of claim 1, wherein: the drip pipe group comprises a closed-loop water pipe frame (5), a plurality of drip pipes (6) are connected in the closed-loop water pipe frame (5) in an arrangement mode, and a plurality of drip holes (7) are formed in the bottoms of the drip pipes (6).
4. The aquaculture tail water recycling system of claim 1, wherein: the frame (3) is a five-layer frame, the top layer is provided with a trickle tube group, and the four layers below are provided with biological flocculation beds (4).
5. The aquaculture tail water recycling system of claim 1, wherein: the biological flocculent bed (4) is a cotton flocculent biological flocculent bed made of polyethylene materials.
6. The aquaculture tail water recycling system of claim 1, wherein: the screen body of the water diversion screen (28) is spherical, and the concave surface faces downwards when the water diversion screen is installed.
7. The aquaculture tail water recycling system of claim 1, wherein: an observation window (31) is arranged on the lower tank body of the cylindrical tank body (27); and a barometer (30) for displaying the air pressure in the cylindrical tank body (27) is arranged on the observation window (31).
8. The aquaculture tail water recycling system of claim 1, wherein: the air pipe (36) is provided with a flow controller (37) for controlling the flow of oxygen and ozone.
9. The aquaculture tail water recycling system of claim 1, wherein: the water discharging pipe (43) is respectively connected with an upper water discharging pipe (39) and a lower water discharging pipe (42), an upper water discharging switch (38) is installed on the upper water discharging pipe (39), the upper water discharging pipe (39) extends to the upper part of the culture pond (41), a lower water discharging switch (40) is installed on the lower water discharging pipe (42), and the lower water discharging pipe (42) extends to the bottom of the culture pond (41).
10. The aquaculture tail water recycling system of claim 1, wherein: the bottom of the cylindrical tank body (27) is in an inverted cone shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310031530.1A CN115745183A (en) | 2023-01-09 | 2023-01-09 | Tail water recycling system for high-density aquaculture |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310031530.1A CN115745183A (en) | 2023-01-09 | 2023-01-09 | Tail water recycling system for high-density aquaculture |
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| CN115745183A true CN115745183A (en) | 2023-03-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118985522A (en) * | 2024-10-25 | 2024-11-22 | 浙江渔老大农业科技有限公司 | Breeding device and method for improving grass carp quality |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118985522A (en) * | 2024-10-25 | 2024-11-22 | 浙江渔老大农业科技有限公司 | Breeding device and method for improving grass carp quality |
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