CN112607868A - Micro-slope flowing water culture tail water treatment system - Google Patents
Micro-slope flowing water culture tail water treatment system Download PDFInfo
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- CN112607868A CN112607868A CN202110004665.XA CN202110004665A CN112607868A CN 112607868 A CN112607868 A CN 112607868A CN 202110004665 A CN202110004665 A CN 202110004665A CN 112607868 A CN112607868 A CN 112607868A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 97
- 239000010865 sewage Substances 0.000 claims abstract description 78
- 241000251468 Actinopterygii Species 0.000 claims abstract description 60
- 238000000746 purification Methods 0.000 claims abstract description 18
- 238000009360 aquaculture Methods 0.000 claims abstract description 14
- 244000144974 aquaculture Species 0.000 claims abstract description 12
- 239000007787 solid Substances 0.000 claims abstract description 9
- 230000005484 gravity Effects 0.000 claims abstract description 8
- 238000000926 separation method Methods 0.000 claims abstract description 8
- 238000007599 discharging Methods 0.000 claims abstract description 3
- 241000196324 Embryophyta Species 0.000 claims description 9
- 230000000903 blocking effect Effects 0.000 claims description 5
- 241000252234 Hypophthalmichthys nobilis Species 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 235000005273 Canna coccinea Nutrition 0.000 claims description 2
- 240000008555 Canna flaccida Species 0.000 claims description 2
- 241001113556 Elodea Species 0.000 claims description 2
- 241000237858 Gastropoda Species 0.000 claims description 2
- 241000220225 Malus Species 0.000 claims description 2
- 241000237536 Mytilus edulis Species 0.000 claims description 2
- 239000013505 freshwater Substances 0.000 claims description 2
- 235000020638 mussel Nutrition 0.000 claims description 2
- 238000004064 recycling Methods 0.000 claims description 2
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 241000498251 Hydrilla Species 0.000 claims 1
- 241001123263 Zostera Species 0.000 claims 1
- 238000009395 breeding Methods 0.000 claims 1
- 230000001488 breeding effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 4
- 210000002700 urine Anatomy 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 210000003608 fece Anatomy 0.000 description 3
- 239000010871 livestock manure Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000002910 solid waste Substances 0.000 description 3
- 238000012258 culturing Methods 0.000 description 2
- 244000205574 Acorus calamus Species 0.000 description 1
- 235000011996 Calamus deerratus Nutrition 0.000 description 1
- 240000003826 Eichhornia crassipes Species 0.000 description 1
- 244000052355 Hydrilla verticillata Species 0.000 description 1
- 241000252232 Hypophthalmichthys Species 0.000 description 1
- 240000008436 Ipomoea aquatica Species 0.000 description 1
- 235000019004 Ipomoea aquatica Nutrition 0.000 description 1
- 241000219991 Lythraceae Species 0.000 description 1
- 235000017879 Nasturtium officinale Nutrition 0.000 description 1
- 240000005407 Nasturtium officinale Species 0.000 description 1
- 244000207867 Pistia stratiotes Species 0.000 description 1
- 235000006440 Pistia stratiotes Nutrition 0.000 description 1
- 241000205578 Thalictrum Species 0.000 description 1
- 240000001085 Trapa natans Species 0.000 description 1
- 241000543445 Vallisneria spiralis Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000009165 saligot Nutrition 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F3/00—Fertilisers from human or animal excrements, e.g. manure
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F7/00—Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Biotechnology (AREA)
- Botany (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Farming Of Fish And Shellfish (AREA)
Abstract
The invention is suitable for the technical field of aquaculture, and provides a micro-slope flowing water aquaculture tail water treatment system, which comprises: the sewage collecting channel is used for forming a sewage discharging channel; the bottom of one end of the fish pond is communicated with the sewage collecting channel through a sewage collecting pipe; a water inlet is arranged at one end of the fish pond far away from the sewage collecting pipe, and a downward slope is formed at the bottom of the fish pond from the water inlet; the wetland purification tank is communicated with the sewage collecting channel through a dry-wet separator and is used for carrying out ecological treatment on sewage; wherein, the fish pond carries out the dirty conveying of excrement through rivers and gravity, and the excrement is dirty to be collected through the dirty passageway of collection, and dry wet separating centrifuge carries out solid separation to sewage excrement, and the inside that the sewage after the separation enters into wetland purification tank carries out ecological treatment. The invention has the advantages that: simple structure, strong purification capacity, good treatment capacity, convenient comprehensive utilization and realization of ecological cycle.
Description
Technical Field
The invention belongs to the technical field of aquaculture, and particularly relates to a micro-slope flowing water aquaculture tail water treatment system.
Background
The running water fish culture is a fish culture mode for carrying out high-density culture by utilizing water sources, water conservancy and topographic resources, and is a very popular culture mode in places with rich cold flow water resources. At present, some patents are generated aiming at a method or system equipment for culturing fish in running water, but domestic research is still blank aiming at tail water treatment of running water culture. Many established or even newly-built running water farms still adopt extensive design for cultivation, and tail water treatment equipment and facilities are considered too little and input too low, so that direct pollution is brought to fishery production, and green water hills are damaged. In fact, during the construction process of the farm, the tail water is reasonably treated, so that pollution can be avoided or reduced.
Disclosure of Invention
The embodiment of the invention aims to provide a micro-slope flowing water culture tail water treatment system, and aims to solve the problem that tail water cannot be reasonably treated.
The invention is realized in this way, a micro-slope flowing water culture tail water treatment system, which comprises:
the sewage collecting channel is used for forming a sewage discharging channel;
the bottom of one end of the fish pond is communicated with the sewage collecting channel through a sewage collecting pipe; a water inlet is arranged at one end of the fish pond far away from the sewage collecting pipe, and a downward slope is formed at the bottom of the fish pond from the water inlet;
the wetland purification tank is communicated with the sewage collecting channel through a dry-wet separator and is used for carrying out ecological treatment on sewage;
wherein, the fish pond carries out the dirty conveying of excrement through rivers and gravity, and the excrement is dirty to be collected through the dirty passageway of collection, and dry wet separating centrifuge carries out solid separation to sewage excrement, and the inside that the sewage after the separation enters into wetland purification tank carries out ecological treatment.
In the embodiment of the invention, the water inlet is communicated with a water source, fish is cultured in the fish pond, solid matters such as excrement and the like are produced by the fish in the culture process, water flows from the water inlet to the sewage collecting pipe to form flowing water flow, the bottom of the fish pond forms a slope structure, solid wastes in the fish pond are deposited in the fish pond and are deposited at one end of the fish pond close to the sewage collecting pipe under the combined action of gravity and water flow, excrement and sewage enter the sewage collecting channel through the sewage collecting pipe, the excrement and sewage in the sewage collecting channel are separated through the dry-wet separator, and the solid excrement and sewage are separated out of the sewage collecting channel and can be recycled as green manure. The separated water enters the wetland purification tank for ecological treatment, so that the treatment capacity is improved, and greening circulation is realized. The invention has the advantages that: simple structure, strong purification capacity, good treatment capacity, convenient comprehensive utilization and realization of ecological cycle.
Drawings
FIG. 1 is a perspective view of a tail water treatment system for micro-slope aquiculture according to an embodiment of the invention;
in the drawings: the system comprises a water inlet 1, a fish pond 2, a fish blocking net 3, a water level control pipe 4, a drainage channel 5, a sewage collecting channel 6, a sewage collecting pipe 7, a dry-wet separator 8 and a wetland purifying pond 9.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Specific implementations of the present invention are described in detail below with reference to specific embodiments.
As shown in fig. 1, a structural diagram of a tail water treatment system for micro-slope aquiculture provided by an embodiment of the invention includes:
a sewage collecting channel 6 for forming a sewage draining channel;
the bottom of one end of the fish pond 2 is communicated with a sewage collecting channel 6 through a sewage collecting pipe 7; a water inlet 1 is arranged at one end of the fish pond 2 far away from the sewage collecting pipe 7, and a downward slope is formed at the bottom of the fish pond 2 from the water inlet 1;
the wetland purification tank 9 is communicated with the sewage collecting channel 6 through a dry-wet separator 8 and is used for carrying out ecological treatment on sewage;
wherein, the fish pond 2 carries out the dirty conveying of excrement through rivers and gravity, and the excrement is dirty to be gathered through album dirty passageway 6, and dry wet separating centrifuge 8 carries out solid separation to sewage excrement, and the inside that the sewage after the separation enters into wetland purifying tank 9 carries out ecological treatment.
In the embodiment of the invention, the water inlet 1 is communicated with a water source, fish is cultured in the fish pond 2, the fish produces solid matters such as excrement and urine in the culturing process, the water flows from the water inlet 1 to the sewage collecting pipe 7 to form flowing water flow, the bottom of the fish pond 2 forms a slope structure, solid wastes in the fish pond 2 are deposited in the fish pond 2 and are deposited at one end of the fish pond 2 close to the sewage collecting pipe 7 under the combined action of gravity and water flow, excrement and urine enter the sewage collecting channel 6 through the sewage collecting pipe 7, the excrement and urine in the sewage collecting channel 6 are separated through the dry-wet separator 8, and the solid excrement and urine are separated out of the sewage collecting channel 6 and can be recycled as green manure. The separated water enters the wetland purification tank 9 for ecological treatment, thereby improving the treatment capacity and realizing the greening circulation.
In an example of the present invention, the fish pond 2 may be a water tank, an excavated water pond, etc. to form a culture space, the interior of the fish pond 2 may contain culture water, the water inlet 1 is communicated with a water source, the water inlet 1 and the sewage collecting pipe 7 are located at two ends of the fish pond 2, and the water inflow of the water inlet 1 and the discharge of the sewage collecting pipe 7 are substantially the same, so that the interior of the fish pond 2 forms dynamic balance to form a stable culture system. The sewage collecting passage 6 may be a tubular structure or an underground passage structure for easy discharge, which will not be described herein. The wet and dry separator 8 is prior art and will not be described herein. The sewage collecting pipe 7 can be provided with a control valve, and the flow of sewage discharge can be controlled through the control valve.
As a preferred embodiment of the invention, the water inlet 1 is of a trapezoidal structure with a downward opening, the trapezoidal structure can be 30cm wide at the upper bottom and 60cm wide at the lower bottom, and water flow is completely pushed towards the water outlet under the restriction of two sides of the trapezoid.
As a preferred embodiment of the invention, the slope of the fish pond 2 from one end of the water inlet 1 to the sewage collecting pipe 7 is 0.8-1.5%, thus facilitating the transmission by the cooperation of water flow and gravity and avoiding the complex structure of the fish pond 2 caused by the overlarge slope.
As a preferred embodiment of the invention, the port of the sewage collecting pipe 7 communicated with the fishpond 2 is provided with a funnel-shaped structure, the inner diameter of the sewage collecting pipe 7 is 200mm, and the height of the funnel-shaped structure is 0.5-1 m. The sewage collecting channel 6 is a sewer pipe, and the inner diameter of the sewage collecting channel is 200mm, so that sewage can be smoothly discharged conveniently.
As a preferred embodiment of the present invention, the wetland purification tank 9 is a soil tank, and submerged plants such as tape grass, hydrilla verticillata, elodea nutans, watermifera, cupressure, malus vernalis and the like, floating plants such as water spinach, water cress, water hyacinth, water lettuce, water caltrop and the like, and emergent plants such as canna, iris, loosestrife, thalictrum, calamus and the like are planted in the soil tank; 5-10 kg/mu of snails, freshwater mussels and 50-200 fish-fish with filter feeding capacity of silver carps and bighead carps are also put in the pond. The area of the wetland purification tank 9 is determined according to available land, and is generally 8-10% of the area of the culture tank.
As a preferred embodiment of the invention, the fish blocking net 3 is arranged in the fish pond 2, and the fish blocking net 3 is positioned at the upstream of the port of the sewage collecting pipe 7, so that the port of the sewage collecting pipe 7 is separated from the inside of the fish pond 2, and fish are prevented from being discharged through the sewage collecting pipe 7.
As another preferred embodiment of the present invention, a water level control pipe 4 is disposed at an end of the fish pond 2 away from the water inlet 1, the water level control pipe 4 is communicated with a drainage channel 5, the water is collected into the wetland purification tank 9 through the drainage channel 5 for recycling, excess water in the fish pond 2 is discharged through the water level control pipe 4, so as to prevent the excess water from overflowing, and the water level control pipe 4 can be disposed at a downstream of the fish blocking net 3, so as to prevent fish from being discharged from the water level control pipe 4.
As a preferred embodiment of the present invention, the water level control pipe 4 is a telescopic pipe structure, and the overflow height of the fish pond 2 is controlled by adjusting the telescopic height of the water level control pipe 4, thereby improving the applicability.
The embodiment of the invention provides a micro-slope flowing water aquaculture tail water treatment system, wherein a slope structure is formed at the bottom of a fish pond 2, solid waste in the fish pond 2 is deposited in the fish pond 2 and is deposited at one end, close to a sewage collecting pipe 7, of the fish pond 2 under the combined action of gravity and water flow, excrement and sewage enter a sewage collecting channel 6 through the sewage collecting pipe 7, excrement and sewage in the sewage collecting channel 6 are separated through a dry-wet separator 8, and the solid excrement and sewage are separated from the sewage collecting channel 6 and can be recycled as green manure. The separated water enters the wetland purification tank 9 for ecological treatment, thereby improving the treatment capacity and realizing the greening circulation.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A micro-slope flowing water aquaculture tail water treatment system is characterized by comprising:
the sewage collecting channel is used for forming a sewage discharging channel;
the bottom of one end of the fish pond is communicated with the sewage collecting channel through a sewage collecting pipe; a water inlet is arranged at one end of the fish pond far away from the sewage collecting pipe, and a downward slope is formed at the bottom of the fish pond from the water inlet;
the wetland purification tank is communicated with the sewage collecting channel through a dry-wet separator and is used for carrying out ecological treatment on sewage;
wherein, the fish pond carries out the dirty conveying of excrement through rivers and gravity, and the excrement is dirty to be collected through the dirty passageway of collection, and dry wet separating centrifuge carries out solid separation to sewage excrement, and the inside that the sewage after the separation enters into wetland purification tank carries out ecological treatment.
2. The micro-slope aquaculture tail water treatment system of claim 1, wherein said water inlet is of a downwardly open trapezoidal configuration.
3. The micro-slope flowing water aquaculture tail water treatment system as claimed in claim 2, wherein the trapezoid structure is 30cm wide at the upper bottom and 60cm wide at the lower bottom.
4. The system of claim 1, wherein the slope of the fishpond from the water inlet end to the sewage collecting pipe is 0.8-1.5%.
5. The micro-slope flow aquaculture tail water treatment system as claimed in claim 1, wherein a port of the sewage collecting pipe communicated with the fishpond is provided with a funnel-shaped structure.
6. The system for treating tail water of micro-slope flowing water aquaculture according to any one of claims 1-5, wherein the wetland purification pond is a soil pond, and one or more combinations of submerged plants, floating plants and emergent water plants are planted in the wetland purification pond; and breeding one or more of snails, freshwater mussels and filter feeding fishes.
7. The system of claim 6, wherein the submerged plants comprise eel grass, hydrilla verticillata, elodea nutans, watermifoil, rambuta cupana, and malus vernalis; the floating plants include caulis et folium Brassicae Junceae, herba Apii Graveolentis, fructus Cucurbitae Moschatae, herba Ecliptae, and pedicellus et pericarpium Trapae; the emergent aquatic plant comprises canna, iris, herba Lysimachiae Grammicae, Reli flower, and rhizoma Acori Calami; the filter feeding fish comprises silver carp and bighead carp.
8. The system as claimed in claim 1, wherein a fish blocking net is arranged in the fish pond and is upstream of the port of the sewage collecting pipe.
9. The system for treating tail water of micro-slope flowing water aquaculture according to claim 1, wherein a water level control pipe is arranged at the end part of the fish pond far away from the water inlet, the water level control pipe is communicated with a drainage channel, and the water level control pipe is collected into the wetland purification pond through the drainage channel for recycling.
10. The micro-slope aquaculture tail water treatment system of claim 9, wherein the water level control pipe is of a telescopic pipe structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110004665.XA CN112607868A (en) | 2021-01-04 | 2021-01-04 | Micro-slope flowing water culture tail water treatment system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110004665.XA CN112607868A (en) | 2021-01-04 | 2021-01-04 | Micro-slope flowing water culture tail water treatment system |
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| Publication Number | Publication Date |
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| CN112607868A true CN112607868A (en) | 2021-04-06 |
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| CN202110004665.XA Pending CN112607868A (en) | 2021-01-04 | 2021-01-04 | Micro-slope flowing water culture tail water treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115039705A (en) * | 2022-07-13 | 2022-09-13 | 云南农业大学 | Agricultural economy ecological breeding device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0531494A (en) * | 1991-07-26 | 1993-02-09 | Shimizu Corp | Purifying facility |
| CN204968967U (en) * | 2015-08-27 | 2016-01-20 | 通威股份有限公司 | Sewage treatment system based on ecological breed |
| CN106719155A (en) * | 2016-12-23 | 2017-05-31 | 唐永平 | Ecological Fish Culture pond |
| CN108835019A (en) * | 2018-07-18 | 2018-11-20 | 湖州师范学院 | A kind of multiple oxygenation circulating water culture system of pond tube settling separation of solid and liquid |
| CN109906994A (en) * | 2019-04-15 | 2019-06-21 | 郑州市水产技术推广站 | A kind of comprehensive breeding system of novel ecological wetland recirculated water |
| CN209368082U (en) * | 2018-12-29 | 2019-09-10 | 广西壮族自治区水产技术推广总站 | A kind of ecological pond culture tail water processing unit |
| CN209449481U (en) * | 2019-01-30 | 2019-10-01 | 广西壮族自治区水产引育种中心 | High drop gravity flow water tank type fish farming system |
| CN110835206A (en) * | 2019-11-26 | 2020-02-25 | 内江师范学院 | Silurus meridionalis elevated pond culture tail water treatment system |
| CN212116707U (en) * | 2019-12-28 | 2020-12-11 | 中国水产科学研究院淡水渔业研究中心 | Circulating water culture system with position-controllable water outlet layer |
-
2021
- 2021-01-04 CN CN202110004665.XA patent/CN112607868A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0531494A (en) * | 1991-07-26 | 1993-02-09 | Shimizu Corp | Purifying facility |
| CN204968967U (en) * | 2015-08-27 | 2016-01-20 | 通威股份有限公司 | Sewage treatment system based on ecological breed |
| CN106719155A (en) * | 2016-12-23 | 2017-05-31 | 唐永平 | Ecological Fish Culture pond |
| CN108835019A (en) * | 2018-07-18 | 2018-11-20 | 湖州师范学院 | A kind of multiple oxygenation circulating water culture system of pond tube settling separation of solid and liquid |
| CN209368082U (en) * | 2018-12-29 | 2019-09-10 | 广西壮族自治区水产技术推广总站 | A kind of ecological pond culture tail water processing unit |
| CN209449481U (en) * | 2019-01-30 | 2019-10-01 | 广西壮族自治区水产引育种中心 | High drop gravity flow water tank type fish farming system |
| CN109906994A (en) * | 2019-04-15 | 2019-06-21 | 郑州市水产技术推广站 | A kind of comprehensive breeding system of novel ecological wetland recirculated water |
| CN110835206A (en) * | 2019-11-26 | 2020-02-25 | 内江师范学院 | Silurus meridionalis elevated pond culture tail water treatment system |
| CN212116707U (en) * | 2019-12-28 | 2020-12-11 | 中国水产科学研究院淡水渔业研究中心 | Circulating water culture system with position-controllable water outlet layer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115039705A (en) * | 2022-07-13 | 2022-09-13 | 云南农业大学 | Agricultural economy ecological breeding device |
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Application publication date: 20210406 |
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