CN211091384U - Low-energy-consumption high-efficiency recirculating aquaculture system - Google Patents
Low-energy-consumption high-efficiency recirculating aquaculture system Download PDFInfo
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- CN211091384U CN211091384U CN201922025527.0U CN201922025527U CN211091384U CN 211091384 U CN211091384 U CN 211091384U CN 201922025527 U CN201922025527 U CN 201922025527U CN 211091384 U CN211091384 U CN 211091384U
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Abstract
The utility model discloses an efficient recirculating aquaculture system of low energy consumption, including breeding pond, one-level sedimentation tank, second grade ecology breed pond, the dirty sedimentation tank of second grade collection, microstrainer and biofiltration pond, breed pond, one-level sedimentation tank, microstrainer and biofiltration pond and connect gradually and form the circulation, and the drain of microstrainer connects gradually the dirty sedimentation tank of second grade ecology breed pond and second grade collection, circulating water pump locates between biofiltration pond and the breed pond, to breeding the pond pump water. The system can timely carry out solid-liquid separation, keep high dissolved oxygen of water and biological filtration on indoor high-density circulating water culture, one part of the cultured water body is subjected to precipitation, microfiltration, reprecipitation and re-culture utilization, the other part of the cultured water body is continuously cultured by water subjected to constant temperature and oxygenation treatment, and the installation amount of a circulating water pump is reduced to reduce energy consumption.
Description
Technical Field
The utility model relates to an aquaculture technical field, in particular to high-efficient recirculating water aquaculture system of low energy consumption.
Background
At present, circulating water culture is popularized in China, but in practical application, a plurality of problems are encountered, and the using effect is influenced. From the technical point of view, there are mainly the following points:
firstly, the system design is unreasonable and unscientific. If the ozone generator and the biological filter tank are used together in the system, the ozone water formed after the ozone is dissolved in the water has a strong sterilization effect, the biological filter tank is mainly used for culturing aquatic probiotics, and the ozone water can kill bacteria in the biological filter tank after entering the biological filter tank. Such paradoxical design would result in a huge waste of equipment cost, and the system would not produce good positive benefits.
Secondly, the equipment cost is too high. In freshwater recirculating aquaculture, the effect of using the protein separator is not ideal, because the viscosity of freshwater is low, the effect of separating suspended solid in water by air flotation is extremely small, but the condition that the investment is increased but the system treatment effect is not obvious is caused by overhigh equipment cost of the protein separator, and huge resistance is caused for the popularization of industrial circulating water in China.
Thirdly, the energy consumption is too high. The recirculating aquaculture needs system equipment to operate uninterruptedly, the largest consumption cost is electric energy, and if the system design is unreasonable, the long-term operation cost is greatly increased if a large amount of water head pressure is meaningless loss caused by using excessive pipelines, elbows and other pipe fittings.
Fourthly, the technology of circulating water treatment is not perfect. Particularly, in the solid-liquid separation and biological filtration system, if some circulating water culture ponds are designed to be square, organic waste at corners is difficult to pass through the circulating filtration system, and the organic waste is accumulated for a long time without being cleaned, so that the water quality is easy to deteriorate and difficult to treat. Meanwhile, when the culture density of the biological filtration system is high, some basic parameters of water quality cannot meet the conditions required by biological bacteria reproduction, so that the biological filtration system runs in an overload manner, the concentration of ammonia nitrogen and nitrite is increased, and the system is broken down.
Fifthly, the feed protein conversion rate of the whole aquaculture system is not high. A large amount of feed which is not eaten by the fishes and the shrimps is filtered by the circulating water treatment system and directly enters the sewage collecting tank for fermentation, thereby causing unnecessary waste.
And sixthly, the management and labor cost is high. The breeding operations such as feeding, water quality detection, underwater monitoring and the like still depend on manual detection, recording and manual drawing analysis, the cost is high, the data is inaccurate, and the real-time, accurate and preventive measures cannot be realized.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's not enough, provide a high-efficient recirculating water aquaculture system of low energy consumption, this system is applicable to indoor high density circulating water aquaculture, can reduce cost and energy consumption, improves cultivation efficiency scientifically.
The technical scheme of the utility model is that: the utility model provides a high-efficient recirculating water aquaculture system of low energy consumption, includes breeds pond, one-level sedimentation tank, second grade ecology and breeds pond, second grade collection dirty sedimentation tank, microstrainer and biofiltration pond, breed pond, one-level sedimentation tank, microstrainer and biofiltration pond and connect gradually and form the circulation, and the drain of microstrainer connects gradually second grade ecology and breeds pond and second grade collection dirty sedimentation tank, biofiltration pond and breed and be equipped with circulating water pump between the pond, to breeding the pond pump water. The culture pond is a main culture water carrier, a water outlet of the first-stage culture pond is connected with a water inlet of the first-stage sedimentation pond, a water outlet of the first-stage sedimentation pond is connected with a water inlet of the micro-filter, a water outlet of the micro-filter is connected with a water inlet of the biological filter pond, a water pump is arranged at the water outlet of the biological filter pond of the whole recirculating aquaculture system, the rest positions utilize height difference to realize the self-flow of water, the setting of the water pump is reduced, the energy consumption is reduced, the using amount of a pressure pipeline can be reduced to the greatest extent, the requirement of the system on the pump lift is reduced, and the power consumption is saved to the. The sewage discharged by the micro-filter is concentrated in a secondary ecological culture pond, and aquatic breeds such as tilapia, Egypt pond louse, shellfish and the like which are resistant to low oxygen and pollution are cultured in the secondary ecological culture pond, the fishes can eat excrement and more fed baits of the fishes in the culture pond, and the excrement and the more fed baits still contain a large amount of nutrients such as unconverted protein after being separated from a culture system through a primary sedimentation tank and the micro-filter, and after the saprophytic animals are converted again, the discharge of culture wastewater can be improved, and the protein conversion rate of the feed can also be effectively improved. The second-level ecological culture pond is connected with a second-level sewage collecting and settling pond, the second-level sewage collecting and settling pond receives high-concentration sewage from the bottom of the second-level ecological culture pond, the sewage is collected and is subjected to fermentation treatment, high-quality organic fertilizer can be obtained for recycling, benefits are increased, and meanwhile the aims of environmental protection and zero emission are further achieved.
The upper part of the culture pond is cylindrical, the lower part of the culture pond is of an inverted cone-shaped structure, the water outlet of the culture pond is positioned at the vertex of a cone at the bottom, and the water inlet direction is the tangential direction on the inner side of the pond wall. Wherein, adopt this structure and the mode of intaking, more do benefit to the fish and shrimp excrement and urine of aquatic, the bait that drops into the aquatic more and concentrate the outlet pipe to being located bottom of the pool center department at the very first time and discharging, prevent that these organic matters from decomposing into the harmful material of soluble ammonia, nitrite, hydrogen sulfide etc. to fish and shrimp in the aquatic.
The upper part of the primary sedimentation tank is cylindrical, the lower part of the primary sedimentation tank is of an inverted cone-shaped structure, the water outlet of the primary sedimentation tank is positioned at the vertex of the cone at the bottom, the water outlet of the primary sedimentation tank is connected with the water inlet of the micro-filter, and the water outlet of the micro-filter is connected with the water inlet of the biological filter. By adopting the structure, the excrement of fishes and shrimps and more baits put into water are concentrated to the water outlet pipe positioned at the center of the bottom of the pool for discharging at the first time, and the organic matters are prevented from being decomposed into soluble ammonia, nitrite, hydrogen sulfide and other substances harmful to the fishes and shrimps in the water.
At least two circulating water pumps are arranged in parallel, a pipeline of one circulating water pump is provided with a constant temperature device, and a pipeline of the other circulating water pump is provided with an oxygenation device. The constant temperature device and the oxygen increasing device are respectively connected in series on the pipeline, water flowing out of the constant temperature device and the oxygen increasing device is higher than the wall of the culture pond, and the water automatically flows back to the culture pond to complete the circulation of the culture water. The constant temperature device can keep the temperature of the circulating water body within a set temperature range, avoids the water temperature fluctuation to cause the fishes and shrimps to generate stress, and is favorable for the growth of the fishes and shrimps. The oxygenation device can keep the high dissolved oxygen state of water, and the oxygenation device can adopt the pure oxygen oxygenation device, can reduce the power consumption, avoids traditional dissolved oxygen mode to a large amount of wastes of oxygen.
The system is characterized in that a water quality online monitoring device and an underwater camera are further arranged in the culture pond, and the water quality online monitoring device and the underwater camera transmit acquired information to a terminal. Wherein, quality of water on-line monitoring device can carry out online remote detection and control to the quality of water of breed pond water, like monitoring temperature, pH valve and dissolved oxygen degree, the developments such as ingestion, activity of breed under water are bred to the camera shooting under water, and the condition can be mastered on line immediately to the monitoring personnel, and the management of being convenient for reduces the cost of labor.
The wave making device is characterized in that a plurality of wave making pumps are arranged on the wall of the upper portion of the primary sedimentation tank, adjacent wave making pumps are distributed in the wall of the tank at equal intervals, the water outlet directions of the wave making pumps are tangential directions, and the directions of all the wave making pumps are clockwise or anticlockwise. Wherein, make the unrestrained pump and strengthen the rivers in the one-level sedimentation tank, make the water whirl in the one-level sedimentation tank more violent, the filth is changeed in concentrating on delivery port department. The setting of the sedimentation tank enhances the sewage collection effect on one hand, and on the other hand, avoids the situation that the fish and the shrimp move excessively to cause low feed conversion rate due to the fact that an excessively violent rotational flow is generated in the culture tank. The power of the selected wave-making pump is small, for example, the power of the commonly used wave-making pump is 25 watts, 3 wave-making pumps are used in one primary sedimentation tank, the total power is only 75 watts, and the energy consumption of the system can be reduced as much as possible under the condition that the cyclone separation effect is ensured.
The biological filter tank adopts the accumulation of biological filter materials, and aquatic probiotics are directionally cultured in the biological filter tank. Wherein the aquatic probiotics include but are not limited to bacillus subtilis, bacillus, yeast, nitrifying bacteria, denitrifying bacteria and the like. The aquatic probiotics can effectively decompose organic suspended matters in water in time on one hand, and can convert part of soluble ammonia nitrogen, nitrite and other substances into nontoxic nitrate and other substances on the other hand.
The circulating water pumps adopt submersible axial flow water pumps, and all the circulating water pumps are connected in parallel. The submersible axial flow water pump is a water pump with low lift, large flow and low power consumption, the operation energy consumption of the system can be greatly reduced, and the parallel circulating water pumps can avoid the influence on the operation of the whole system when a single circulating water pump fails.
The system is also provided with a reservoir connected with the first-stage sedimentation tank, the reservoir is divided into two parts, and the two parts of the reservoir are respectively provided with a filtering device and a sterilizing device for treating raw water in the reservoir in turn. The water storage tank can well buffer the recirculating aquaculture system, can well prevent harmful bacteria, viruses, harmful algae seeds and the like in exogenous water from entering the recirculating aquaculture water body, and effectively prevents diseases.
The water quality on-line monitoring device is connected with the oxygenation device and controls the oxygenation device. When the water quality on-line monitoring device detects that the dissolved oxygen is low, the oxygen increasing device is controlled to be opened, the water dissolved oxygen of the circulating water culture system can be maintained in a stable range by adopting the method, the growth of fishes and shrimps is facilitated, the labor cost brought by manual switch oxygen increasing equipment can be saved by automatic control, and the management error brought by the manual switch oxygen increasing equipment can be effectively avoided.
Compared with the prior art, the utility model, following beneficial effect has:
the low-energy-consumption high-efficiency circulating water culture system can timely perform solid-liquid separation on indoor high-density circulating water culture, keep high dissolved oxygen in water and perform biological filtration, one part of the cultured water body is subjected to precipitation, microfiltration, reprecipitation and re-culture utilization, the other part of the cultured water body is continuously cultured through water subjected to constant temperature and oxygenation treatment, the installation amount of a circulating water pump is reduced to reduce energy consumption, the equipment can reduce the management cost, the equipment cost is lower, the design is more scientific and reasonable, the cultured density is higher, and the operation is more intelligent.
Drawings
FIG. 1 is a schematic structural diagram of the low energy consumption and high efficiency recirculating aquaculture system.
FIG. 2 is a schematic structural view of a culture pond.
Wherein, as shown in the figure, 1 is a culture pond, 2 is a primary sedimentation pond, 3 is a micro-filter, 4 is a biological filter, 5 is a circulating water pump, 6 is an oxygenation device, 7 is a constant temperature device, 8 is a secondary ecological culture pond, 9 is a secondary sewage collecting and sedimentation pond, 10 is a reservoir, 11 is an ozone device, 12 is a water quality on-line monitoring device, 13 is an underwater camera, and 14 is raw water.
Detailed Description
The present invention will be described in further detail with reference to examples, but the present invention is not limited thereto.
Examples
This embodiment is a high-efficient recirculating aquaculture system of low energy consumption, as shown in fig. 1 and 2, including breeding pond 1, one-level sedimentation tank 2, the ecological pond 8 of breeding of second grade, the dirty sedimentation tank 9 of second grade collection, microstrainer 3 and biofiltration pond 4, breed pond, one-level sedimentation tank, microstrainer and biofiltration pond and connect gradually and form the circulation, and the drain of microstrainer connects gradually the ecological pond of breeding of second grade and the dirty sedimentation tank of second grade collection, circulating water pump 5 locates between biofiltration pond and the breed pond, to breeding the pond pump water. The culture pond is a main culture water carrier, a water outlet of the first-stage culture pond is connected with a water inlet of the first-stage sedimentation pond, a water outlet of the first-stage sedimentation pond is connected with a water inlet of the micro-filter, a water outlet of the micro-filter is connected with a water inlet of the biological filter pond, a water pump is arranged at the water outlet of the biological filter pond of the whole recirculating aquaculture system, the rest positions utilize height difference to realize the self-flow of water, the setting of the water pump is reduced, the energy consumption is reduced, the using amount of a pressure pipeline can be reduced to the greatest extent, the requirement of the system on the pump lift is reduced, and the power consumption is saved to the. The sewage discharged by the micro-filter is concentrated in a secondary ecological culture pond, and aquatic breeds such as tilapia, Egypt pond louse, shellfish and the like which are resistant to low oxygen and pollution are cultured in the secondary ecological culture pond, the fishes can eat excrement and more fed baits of the fishes in the culture pond, and the excrement and the more fed baits still contain a large amount of nutrients such as unconverted protein after being separated from a culture system through a primary sedimentation tank and the micro-filter, and after the saprophytic animals are converted again, the discharge of culture wastewater can be improved, and the protein conversion rate of the feed can also be effectively improved. The second-level ecological culture pond is connected with a second-level sewage collecting and settling pond, the second-level sewage collecting and settling pond receives high-concentration sewage from the bottom of the second-level ecological culture pond, the sewage is collected and is subjected to fermentation treatment, high-quality organic fertilizer can be obtained for recycling, benefits are increased, and meanwhile the aims of environmental protection and zero emission are further achieved.
The upper part of the culture pond is cylindrical, the lower part of the culture pond is of an inverted cone-shaped structure, the water outlet of the culture pond is positioned at the vertex of a cone at the bottom, and the water inlet direction is the tangential direction on the inner side of the pond wall. Wherein, adopt this structure and the mode of intaking, more do benefit to the fish and shrimp excrement and urine of aquatic, the bait that drops into the aquatic more and concentrate the outlet pipe to being located bottom of the pool center department at the very first time and discharging, prevent that these organic matters from decomposing into the harmful material of soluble ammonia, nitrite, hydrogen sulfide etc. to fish and shrimp in the aquatic.
The upper part of the primary sedimentation tank is cylindrical, the lower part of the primary sedimentation tank is of an inverted cone-shaped structure, the water outlet of the primary sedimentation tank is positioned at the vertex of the cone at the bottom, the water outlet of the primary sedimentation tank is connected with the water inlet of the micro-filter, and the water outlet of the micro-filter is connected with the water inlet of the biological filter. By adopting the structure, the excrement of fishes and shrimps and more baits put into water are concentrated to the water outlet pipe positioned at the center of the bottom of the pool for discharging at the first time, and the organic matters are prevented from being decomposed into soluble ammonia, nitrite, hydrogen sulfide and other substances harmful to the fishes and shrimps in the water. At least two circulating water pumps are arranged in parallel, a pipeline of one circulating water pump is provided with a constant temperature device 7, and a pipeline of the other circulating water pump is provided with an oxygenation device 6. The constant temperature device and the oxygen increasing device are respectively connected in series on the pipeline, water flowing out of the constant temperature device and the oxygen increasing device is higher than the wall of the culture pond, and the water automatically flows back to the culture pond to complete the circulation of the culture water. The constant temperature device can keep the temperature of the circulating water body within a set temperature range, avoids the water temperature fluctuation to cause the fishes and shrimps to generate stress, and is favorable for the growth of the fishes and shrimps. The oxygenation device can keep the high dissolved oxygen state of water, and the oxygenation device can adopt the pure oxygen oxygenation device, can reduce the power consumption, avoids traditional dissolved oxygen mode to a large amount of wastes of oxygen.
And a water quality online monitoring device 12 and an underwater camera 13 are also arranged in the culture pond, and the water quality online monitoring device and the underwater camera transmit acquired information to a terminal. Wherein, quality of water on-line monitoring device can carry out online remote detection and control to the quality of water of breed pond water, like monitoring temperature, pH valve and dissolved oxygen degree, the developments such as ingestion, activity of breed under water are bred to the camera shooting under water, and the condition can be mastered on line immediately to the monitoring personnel, and the management of being convenient for reduces the cost of labor.
The wall of the upper part of the primary sedimentation tank is provided with a plurality of wave-making pumps, the adjacent wave-making pumps are distributed in the wall of the tank at equal intervals, the water outlet directions of the wave-making pumps are tangential directions, and the directions of all the wave-making pumps are clockwise or anticlockwise. Wherein, make the unrestrained pump and strengthen the rivers in the one-level sedimentation tank, make the water whirl in the one-level sedimentation tank more violent, the filth is changeed in concentrating on delivery port department. The setting of the sedimentation tank enhances the sewage collection effect on one hand, and on the other hand, avoids the situation that the fish and the shrimp move excessively to cause low feed conversion rate due to the fact that an excessively violent rotational flow is generated in the culture tank. The power of the selected wave-making pump is small, for example, the power of the commonly used wave-making pump is 25 watts, 3 wave-making pumps are used in one primary sedimentation tank, the total power is only 75 watts, and the energy consumption of the system can be reduced as much as possible under the condition that the cyclone separation effect is ensured.
The biological filter tank adopts biological filter material to pile up, and aquatic probiotics are directionally cultured in the biological filter tank. Wherein the aquatic probiotics include but are not limited to bacillus subtilis, bacillus, yeast, nitrifying bacteria, denitrifying bacteria and the like. The aquatic probiotics can effectively decompose organic suspended matters in water in time on one hand, and can convert part of soluble ammonia nitrogen, nitrite and other substances into nontoxic nitrate and other substances on the other hand.
The circulating water pumps adopt submersible axial flow water pumps, and all the circulating water pumps are connected in parallel. The submersible axial flow water pump is a water pump with low lift, large flow and low power consumption, the operation energy consumption of the system can be greatly reduced, and the parallel circulating water pumps can avoid the influence on the operation of the whole system when a single circulating water pump fails.
The system is also provided with a reservoir 10 which is divided into two parts, wherein the two parts of the reservoir are respectively provided with a filtering device and a sterilizing device for treating raw water 14 in the reservoir in turn, and the sterilizing device adopts an ozone device 11. The water storage tank can well buffer the recirculating aquaculture system, can well prevent harmful bacteria, viruses, harmful algae seeds and the like in exogenous water from entering the recirculating aquaculture water body, and effectively prevents diseases.
The water quality on-line monitoring device is connected with the oxygenation device and controls the oxygenation device. When the water quality on-line monitoring device detects that the dissolved oxygen amount is low, the oxygen increasing device is controlled to be started, the water body dissolved oxygen degree of the circulating water aquaculture system can be maintained in a stable range by adopting the method, the growth of fishes and shrimps is facilitated, the labor cost brought by manual switch oxygen increasing equipment can be saved by automatic control, and the management error brought by the manual switch oxygen increasing equipment can be effectively avoided.
Among the above-mentioned device, the microstrainer adopts the automatic cylinder microstrainer of W L30 of Guangzhou Lanling water obstetrics technology ltd, and the pure oxygen dissolves the oxygen device and adopts the PO700 pure oxygen dissolved oxygen ware of Guangzhou Lanling water obstetrics technology ltd, and water quality on-line monitoring device purchases from Guangzhou City expert shield electron technology ltd model CK-G.
As described above, the present invention can be realized well, and the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention; all equivalent changes and modifications made according to the present invention are intended to be covered by the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a high-efficient recirculating water aquaculture system of low energy consumption, its characterized in that, includes breeds pond, one-level sedimentation tank, second grade ecology and breeds pond, second grade collection dirty sedimentation tank, microstrainer and biofiltration pond, breed pond, one-level sedimentation tank, microstrainer and biofiltration pond and connect gradually and form the circulation, and the drain of microstrainer connects gradually second grade ecology and breeds pond and second grade collection dirty sedimentation tank, biofiltration pond and breed and be equipped with circulating water pump between the pond, to breeding the pond pump water.
2. The system of claim 1, wherein the upper part of the culture pond is cylindrical, the lower part of the culture pond is in an inverted conical structure, the water outlet of the culture pond is located at the conical vertex of the bottom, and the water inlet direction is the tangential direction on the inner side of the pond wall.
3. The system of claim 1, wherein the primary sedimentation tank has a cylindrical upper part and an inverted conical lower part, the water outlet of the primary sedimentation tank is located at the conical vertex of the bottom, the water outlet of the primary sedimentation tank is connected with the water inlet of the micro-filter, and the water outlet of the micro-filter is connected with the water inlet of the biological filter.
4. A low energy consumption and high efficiency recirculating aquaculture system as claimed in claim 1 wherein said recirculating water pumps are provided with at least two, each recirculating water pump being connected in parallel, one recirculating water pump being provided with a thermostatic device on its piping and the other recirculating water pump being provided with an aerator on its piping.
5. The low-energy-consumption high-efficiency recirculating aquaculture system of claim 4, wherein the aquaculture pond is further provided with an online water quality monitoring device and an underwater camera, and the online water quality monitoring device and the underwater camera transmit the acquired information to the terminal.
6. The system of claim 1, wherein the first-stage sedimentation tank has a plurality of wave-making pumps on the wall of the upper part, the adjacent wave-making pumps are distributed at equal intervals in the wall of the first-stage sedimentation tank, the water outlet directions of the wave-making pumps are tangential directions, and the directions of all the wave-making pumps are clockwise or counterclockwise.
7. The system of claim 1, wherein the biological filter tank is constructed by stacking biological filter materials, and the biological filter tank is used for directionally culturing aquatic probiotics.
8. The system of claim 1, wherein the recirculating water pump is a submersible axial-flow pump.
9. The system of claim 1, further comprising a reservoir connected to the first settling tank, wherein the reservoir is divided into two parts, and the two parts of the reservoir are provided with a filtering device and a sterilizing device for alternately treating raw water in the reservoir.
10. The low-energy-consumption and high-efficiency recirculating aquaculture system of claim 5, wherein said water quality on-line monitoring device is connected with and controls said oxygen-increasing device.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112777725A (en) * | 2020-12-23 | 2021-05-11 | 广东省科学院化工研究所 | Aerobic denitrifying bacteria denitrification device |
| CN113412810A (en) * | 2021-07-23 | 2021-09-21 | 山西省水产科学研究所 | Canvas culture pond water purifies cyclic utilization device |
| CN113575472A (en) * | 2021-08-18 | 2021-11-02 | 湖州师范学院 | Zero-pollution-discharge circulating water aquaculture method for pond |
| CN114467828A (en) * | 2021-12-23 | 2022-05-13 | 贵州万峰湖水产发展有限公司 | Land-based aquaculture seedling system |
| CN114600821A (en) * | 2022-03-23 | 2022-06-10 | 泰安九章信息科技有限公司 | Energy-saving high-density circulating water culture method and system |
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2019
- 2019-11-21 CN CN201922025527.0U patent/CN211091384U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112777725A (en) * | 2020-12-23 | 2021-05-11 | 广东省科学院化工研究所 | Aerobic denitrifying bacteria denitrification device |
| CN113412810A (en) * | 2021-07-23 | 2021-09-21 | 山西省水产科学研究所 | Canvas culture pond water purifies cyclic utilization device |
| CN113575472A (en) * | 2021-08-18 | 2021-11-02 | 湖州师范学院 | Zero-pollution-discharge circulating water aquaculture method for pond |
| CN114467828A (en) * | 2021-12-23 | 2022-05-13 | 贵州万峰湖水产发展有限公司 | Land-based aquaculture seedling system |
| CN114467828B (en) * | 2021-12-23 | 2023-02-28 | 贵州万峰湖水产发展有限公司 | Land-based aquaculture seedling system |
| CN114600821A (en) * | 2022-03-23 | 2022-06-10 | 泰安九章信息科技有限公司 | Energy-saving high-density circulating water culture method and system |
| CN114600821B (en) * | 2022-03-23 | 2023-12-26 | 泰安九章康促生物科技有限公司 | Energy-saving high-density circulating water culture method and system |
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