CN113100149A - Closed ecological fish culture system and fish culture method thereof - Google Patents
Closed ecological fish culture system and fish culture method thereof Download PDFInfo
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- CN113100149A CN113100149A CN202110391087.XA CN202110391087A CN113100149A CN 113100149 A CN113100149 A CN 113100149A CN 202110391087 A CN202110391087 A CN 202110391087A CN 113100149 A CN113100149 A CN 113100149A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/003—Aquaria; Terraria
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G31/00—Soilless cultivation, e.g. hydroponics
- A01G31/02—Special apparatus therefor
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G7/00—Botany in general
- A01G7/02—Treatment of plants with carbon dioxide
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
- A01K63/042—Introducing gases into the water, e.g. aerators, air pumps
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
Abstract
The invention provides a closed ecological fish culture system which comprises a closed fish tank, wherein the lower end of the closed fish tank is fixedly connected with a water outlet pipe, the lower end of the water outlet pipe is fixedly connected with a solid-liquid separator, the water outlet of the solid-liquid separator is fixedly connected with a nitration reaction tower, the outlet of the reaction tower is connected with a water culture planting pool through a pipeline, the side surface of the water culture planting pool is connected with a micro-filter through a pipeline, the micro-filter is connected with a dry-wet separator and the closed fish tank through a pipeline, the upper end of the closed fish tank is connected with an air outlet through a pipeline, the side surface of the closed fish tank is connected with an oxygen dissolving cone through a pipeline, the side surface of the oxygen dissolving cone is communicated with an oxygen source (such as an oxygen generator. The fish culture technology and the planting technology are combined, waste water and waste gas (oxygen and carbon dioxide) are collected and utilized to form a closed loop treatment system, the culture and planting efficiency is improved through the interaction of culture and planting, and resources are reasonably utilized.
Description
Technical Field
The invention relates to the technical field of ecological breeding, in particular to a closed ecological fish breeding system and a fish breeding method thereof.
Background
Modern industrial aquaculture usually adopts facility culture, and is characterized by high-density culture, circulating water culture and ecological technology culture. The industrial culture mode is that single-variety fishes with similar specifications are usually cultured in the same culture container, and standardized and high-density culture is carried out by adopting feed. The fish needs to consume oxygen and breathe out carbon dioxide continuously during growth, feed is digested, excrement is discharged, and residual bait possibly decays and deteriorates continuously in a water body, which can affect water quality, so that the oxygen in the container needs to be increased continuously, and aquaculture water needs to be purified continuously in a circulating mode to keep the water quality fresh.
The prior industrial aquaculture mode generally treats the fish culture wastewater in time, and avoids environmental pollution caused by excessive discharge into the environment. The waste water (containing fish manure and ammonia nitrogen) for fish culture contains fertilizer required by plant growth, the fish culture process and the water culture planting process are combined, the waste water is collected and utilized, and a closed circulation system can be formed for water resources. Through the interaction of cultivation and planting, the production efficiency of cultivation and planting is improved, resources are reasonably utilized, and the realization of an ecological organic modern agriculture mode is an important development direction at present. The production system is generally an open system, generally adopts air oxygenation (Roots blower oxygenation), and the dissolved oxygen can generally reach 5-8 mg/L. This is not the optimum condition for high density culture. Researches in recent years show that if pure oxygen is adopted for oxygenation, the growth condition of fishes under the condition of high-density culture can be greatly improved, and the growth speed and the quality are obviously improved.
However, the oxygen aeration with pure oxygen is expensive, and if an open container is continuously adopted, high-purity oxygen can be easily lost from the water surface to the air, so that great waste of oxygen is caused.
On the other hand, carbon dioxide exhaled by the fishes has further utilization value, and is dissipated in the cultivation workshop, so that the concentration of the carbon dioxide in the cultivation workshop is too high, and the health of workers is harmed. In a production system of an industrial fish-vegetable cycle, carbon dioxide is a gas fertilizer necessary for photosynthesis of hydroponic vegetables, and in order to maintain a good growth rate of plants, it is necessary to maintain a sufficient carbon dioxide gas concentration in the air in a hydroponic plant unit.
The invention adopts a closed device to collect waste gas (mainly oxygen and carbon dioxide) in the culture container and separate the waste gas by a gas separation device, oxygen flows back to the culture unit for continuous use, and carbon dioxide is conveyed to the water culture plant unit for plant growth.
Disclosure of Invention
The invention provides a closed ecological fish culture system and a fish culture method thereof, which are used for solving the technical problems brought forward by the technical background.
In order to achieve the purpose, the invention provides the following technical scheme that the closed ecological fish culture system comprises a closed fish tank, wherein the lower end of the closed fish tank is fixedly connected with a water outlet pipe, the lower end of the water outlet pipe is fixedly connected with a solid-liquid separator, the water outlet of the solid-liquid separator is fixedly connected with a reaction tower, the outlet of the reaction tower is connected with a water culture planting pool through a pipeline, the side surface of the water culture planting pool is connected with a micro-filter through a pipeline, the micro-filter is connected with a dry-wet separator and the closed fish tank through a pipeline, the upper end of the closed fish tank is connected with an exhaust port through a pipeline, the side surface of the closed fish tank is connected with an oxygen generator through a pipeline, the side surface of the oxygen generator is communicated with an oxygen melting cone.
Preferably, to improve the practicability of the present invention, the water outlet pipe and each pipeline are provided with a switch valve.
Preferably, to enhance the utility of the present invention, the wet and dry separator is used to filter large particle residues from the water exiting the microfiltration machine.
Preferably, to improve the utility of the present invention, the micro-filter is used for filtering large particles of impurities flowing into the hydroponic culture pond.
In order to improve the practicability of the invention, the exhaust port is provided with a gas separator which is used for separating gas exhausted upwards from the interior of the closed fish tank, and the gas mainly comprises C02And O2。
A fish culture method of a closed ecological fish culture system comprises the following steps:
step 1: connecting all parts of the closed ecological fish culture system, screwing down a switch valve, and then filling the fry and culture water in a closed fish tank;
step 2: the method comprises the following steps of starting an oxygen generator, injecting high-pressure water into an oxygen dissolving cone, mixing the high-pressure water and oxygen in the oxygen dissolving cone, and then conveying the mixture into a sealable fish tank, wherein a certain inclined acute angle is designed at a water inlet, so that when high-pressure water is injected into the fish tank at a certain speed, impact is generated on water in the fish tank, and the water forms a rotating vortex in the sealable fish tank, so that the raised fish has a motion condition close to the growth in natural running water;
and step 3: the culture water continuously flows out of the container at a certain flow speed through a discharge pipe at the lower part of the container and takes away excrement and residual baits, the water is subjected to solid-liquid separation through a solid-liquid separator, the separated solids are collected in a centralized manner and can be used as organic fertilizer for plant planting after fermentation, the water separated by the solid-liquid separator is communicated to a nitrification reaction tower through a water outlet, a biological treatment membrane in a mesh state is arranged in the nitrification reaction tower, ammonia nitrogen in the water is nitrified to obtain water rich in nitrate ions, the nitrate ions in the water are absorbed through plant roots through a water culture pond connected with an outlet pipeline of the nitrification reaction tower, and the obtained purified water flows back into the culture container;
and 4, step 4: the micro-filter on the side of the water culture planting pool filters the water purified by the water culture planting pool, separates the solid from the water, and continuously adds the treated water into the closed fish tank;
and 5: gas separator for separating C02And O2Separating to obtain O2Inoculating into oxygen source after sterilization, and further using C02Collecting the water culture vegetables in the space.
Compared with the prior art, the invention has the beneficial effects that:
and (I) the pure oxygen oxygenation mode becomes economical and feasible, and the oxygen which is not completely consumed can be recycled. Oxygen is enriched by pure oxygen, the dissolved oxygen in water can reach more than 10mg/L, and the growth environment of the fish during high-density culture is greatly improved.
And (II) the water after solid-liquid separation contains higher dissolved oxygen, so that the conversion efficiency of the nitrification unit is greatly improved. The basic working principle of the nitrification unit is oxidation reaction, and the higher dissolved oxygen in water is beneficial to the growth and reaction process of nitrifying bacteria.
And (III) the water flowing into the hydroponic vegetable unit contains higher dissolved oxygen. The growth of the plant root system needs sufficient dissolved oxygen, and the higher dissolved oxygen contained in the water is beneficial to the healthy growth of the plant.
And (IV) the open system adopts a large amount of air aeration for oxygenation, and a large amount of air not only takes away cultivation waste gas but also takes away a large amount of heat from the water body. In contrast, the controllability of various parameters in the closed system is stronger, and the energy loss is greatly reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural view of a closed ecological fish farming system according to the present invention.
In the figure: the device comprises a sealable fish tank 1, a water outlet pipe 2, a solid-liquid separator 3, a reaction tower 4, a water culture planting pool 5, a switch valve 6, a micro-filter 7, a dry-wet separator 8, an exhaust port 9, a gas separator 10, an oxygen generator 11 and an oxygen dissolving cone 12.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In order to further improve the practicability of the invention, the water outlet pipe 2 and each pipeline are provided with a switch valve 6. And opening or closing the switch valve to open or close the pipeline channel.
To further enhance the utility of the present invention, the wet-dry separator 8 is used to filter large particle residues in the water from the micro-filter 7.
To further enhance the utility of the present invention, the micro-filter 7 is used to filter large particles of impurities flowing into the hydroponic culture pond 5.
In order to further improve the practicability of the present invention, a gas separator 10 is provided at the exhaust port 9, and the gas separator 10 is used for efficiently separating carbon dioxide from the mixed exhaust gas discharged from the sealable fish tank 1.
A fish culture method of a closed ecological fish culture system comprises the following steps:
step 1: connecting all parts of the closed ecological fish culture system, screwing down the switch valve 6, and then filling the fry and culture water in the closed fish tank 1;
step 2: the oxygen generator 11 is started, high-pressure water is injected into the dissolved oxygen cone 12, the dissolved oxygen cone 12 conveys high-dissolved oxygen water to the sealable fish tank 1, an inclined acute angle is designed because the side surface of the sealable fish tank 1 is connected with a water injection pipe orifice, when the high-dissolved oxygen water is injected into the sealable fish tank 1, impact is generated on water in the sealable fish tank 1, and water forms a rotating vortex in the sealable fish tank 1, so that the raised fish can move in a container in a counter-current manner;
and step 3: when the culture water needs to be circularly treated, a switch valve 6 fixedly connected with a water outlet pipe 2 at the lower end of a closed fish tank 1 is opened, the water passes through a solid-liquid separator 3 to separate solids, the separated solids are collected in a centralized manner and are used as organic fertilizers after microbial fermentation, the water separated by the solid-liquid separator 3 is communicated to a reaction tower 4 through a water outlet, a nitrobacteria microbial treatment membrane in a mesh state is arranged in the reaction tower 4, nitrobacteria carry out nitration reaction on ammonia nitrogen wastes in the water to obtain water rich in nitrate ions, and the treated water rich in the nitrate ions is discharged into a water culture planting pond 5 through a water culture pond 5 connected with an outlet pipeline of the reaction tower 4;
and 4, step 4: a micro-filter 7 on the side surface of the water culture planting pool 5 is used for treating the wastewater after vegetables are irrigated, separating solid and water through a dry-wet separator 8, and continuously adding the treated water into the sealable fish tank 1;
and 5: gas separator 10 will separate C02And O2Carrying out efficient separation to obtain O2Collecting and delivering to an oxygen source to obtain C02Collected and transported to a greenhouse for hydroponic vegetables.
According to the invention, the fish culture technology and the planting technology are combined, waste water and waste gas are collected and utilized to form a closed loop treatment system, the culture and planting efficiency is improved through the interaction of culture and planting, and resources are reasonably utilized.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A closed ecological fish farming system comprises a closed fish tank (1), and is characterized in that gas discharged from the upper part of the fish farming water surface in a closed state can be collected through an exhaust pipeline and further processed, the lower end of the closed fish tank (1) is fixedly connected with an outlet pipe (2), the lower end of the outlet pipe (2) is fixedly connected with a solid-liquid separator (3), the water outlet of the solid-liquid separator (3) is fixedly connected with a reaction tower (4), the outlet of the reaction tower (4) is connected with a water planting pond (5) through a pipeline, the side surface of the water planting pond (5) is connected with a microfilter (7) through a pipeline, the microfilter (7) is connected with a dry-wet separator (8) and a closed fish tank (1) through pipelines, the upper end of the closed fish tank (1) is connected with an exhaust port (9), the side surface of the fish tank (1) which can be sealed is connected with an oxygen dissolving cone (12) through a pipeline, the side surface of the oxygen dissolving cone (12) is communicated with an oxygen source (such as an oxygen generator and an oxygen storage tank) (11), and the exhaust port (9) is fixedly connected with a gas separator (10).
2. A closed ecological fish farming system according to claim 1, wherein the outlet pipe (2) and the pipes are provided with on-off valves (6).
3. Closed ecological fish farming system according to claim 1, characterized in that the wet and dry separator (8) is used to filter large particle residues from the water exiting the micro-filter (7).
4. A closed ecological fish farming system according to claim 1, wherein the micro-filter (7) is adapted to filter large particles of impurities flowing into the hydroponic culture pond (5).
5. A closed ecological fish culture system as claimed in claim 1, wherein the gas outlet (9) is provided with a gas separator (10), the gas separator (10) is used for separating gas exhausted upwards from the interior of the closed fish tank (1), and the gas mainly comprises C02And O2。
6. A fish farming method of the closed ecological fish farming system according to claims 1 to 5, wherein: the method comprises the following steps:
step 1: connecting all parts of the closed ecological fish culture system by pipelines, and then filling the fries and the feeding water in a closed fish tank (1); the water outlet is provided with a porous baffle plate to prevent the fry from being pumped away, and the fish manure flows out along the water outlet; the water with the fish feces returns to the closed fish tank (1) from the water injection port at the upper part after a series of purification steps, thereby realizing the cyclic utilization of the fish culture water;
step 2: the method comprises the following steps that an oxygen generator (11) is started, high-pressure water is injected through an oxygen dissolving cone (12), the oxygen dissolving cone (12) mixes the high-pressure water with oxygen generated by the oxygen generator (11), and then the mixture is conveyed to a sealable fish tank (1) through a pipeline, because the side surface of the sealable fish tank (1) is connected with the oxygen dissolving cone (12), a nozzle of the oxygen dissolving cone (12) sprayed into the sealable fish tank (1) is provided with an inclined acute angle, when water flow dissolved with oxygen is sprayed into the sealable fish tank (1), impact can be generated on water in the sealable fish tank (1), and the water forms a rotating vortex in the sealable fish tank (1), so that raised fish keep moving in flowing water;
and step 3: in the feeding process, water flows out from a water outlet pipe (2) connected with the lower end of a closed fish tank (1), a switch valve (6) on the pipe is kept in an open state at ordinary times, the water passes through a solid-liquid separator (3) to separate solid particles from the water, the separated solid particles can be collected in a centralized manner to be fermented and then used as organic fertilizer, the water containing ammonia nitrogen and separated by the solid-liquid separator (3) is communicated to a nitration tower (4) through a water outlet, a biological treatment membrane with nitrobacteria is arranged in the nitration tower (4) and made of porous materials, the water is subjected to nitration reaction to obtain water rich in nitrate ions, and the treated water rich in the nitrate ions is discharged into a water culture pond (5) through a water culture pond (5) connected with an outlet pipeline of the nitration tower (4);
and 4, step 4: a micro-filter (7) on the side surface of the water culture planting pool (5) treats the wastewater after vegetables are irrigated, a dry-wet separator (8) separates solids and water, and the treated water continuously flows back to the closed fish tank (1);
and 5: the gas separator (10) separates C02And O2Separating to obtain O2Recollecting and using in cultivation system, and mixing C02Collecting the water culture vegetables in the space.
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| CN113100149B CN113100149B (en) | 2023-10-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO347173B1 (en) * | 2021-12-10 | 2023-06-19 | Eide Fjordbruk As | Self-stabilizing submersible fish farm |
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