Aquaculture system utilizing reservoir bottom water

Abstract

The utility model discloses an aquaculture system utilizing reservoir bottom water, and particularly relates to the technical field of aquaculture, the aquaculture system comprises a sedimentation tank, an aerobic reaction tank, a disinfection device and a culture pond, the sedimentation tank is connected and communicated with the bottom of a reservoir through a drain pipe, and the bottom of the sedimentation tank is communicated with the outside through a sludge discharge pipe; aquatic products and aquatic plants with high tolerance to eutrophic water bodies are arranged in the sedimentation tank, the sedimentation tank is connected and communicated with the aerobic reaction tank through a first water outlet pipe, biological stuffing is arranged in the aerobic reaction tank and used for attaching microorganisms, and the aerobic reaction tank is connected and communicated with the disinfection device through a second water outlet pipe. The disinfecting and sterilizing device is used for disinfecting and sterilizing reservoir bottom water and is connected and communicated with the culture pond through a third water outlet pipe. According to the utility model, the deposition nutrition at the bottom of the reservoir can participate in a culture ecological environment circulation system again, the secondary utilization of nutrient substances is enhanced, and the utilization rate of water resources is improved.

Description

Technical Field

[0001] This utility model relates to the field of aquaculture technology, and in particular to an aquaculture system that utilizes water from the bottom of a reservoir. Background Technology

[0002] In medium to large reservoirs with significant vertical water stratification, the deterioration of water quality at the reservoir bottom has become a widespread environmental problem. This bottom water contains high concentrations of nitrogen, phosphorus, ammonia nitrogen, and organic matter; direct discharge of this substandard water would cause devastating damage to the downstream ecosystem. Therefore, bottom water is generally unusable after discharge, resulting in resource waste. Given the increasing scarcity of water resources, the resource utilization of bottom water has become an urgent technical challenge. Developing efficient and low-cost treatment processes and establishing ecological compensation mechanisms will be of significant practical importance in alleviating regional water crises. Utility Model Content

[0003] The purpose of this invention is to provide an aquaculture system that utilizes reservoir bottom water to solve the problems existing in the prior art. This system enables nutrients deposited at the bottom of the reservoir to re-enter the aquaculture ecological environment cycle, strengthens the secondary utilization of nutrients, and improves water resource utilization.

[0004] To achieve the above objectives, this utility model provides the following solution:

[0005] This utility model provides an aquaculture system utilizing reservoir bottom water, including a sedimentation tank, an aerobic reaction tank, a disinfection device, and an aquaculture pond. The sedimentation tank is connected to the bottom of the reservoir via a drainage pipe, and the bottom of the sedimentation tank is connected to the outside via a sludge discharge pipe. The sedimentation tank contains aquatic organisms and aquatic plants that are highly tolerant of eutrophic water. The sedimentation tank is connected to the aerobic reaction tank via a first outlet pipe, and the aerobic reaction tank contains biological packing material for attaching microorganisms. The aerobic reaction tank is connected to the disinfection device via a second outlet pipe, and the disinfection device is used to disinfect and sterilize the reservoir bottom water. The disinfection device is connected to the aquaculture pond via a third outlet pipe.

[0006] Preferably, the bottom of the sedimentation tank is an inverted conical bottom, and a sludge discharge port is provided at the bottom of the inverted conical bottom, which is connected and communicates with the sludge discharge pipe.

[0007] Preferably, a first outlet is provided in the middle of the side wall of the sedimentation tank, and the first outlet is connected to and communicates with the first outlet pipe.

[0008] Preferably, the sedimentation tank, the aerobic reaction tank, the disinfection device, and the aquaculture pond are arranged in sequence from high to low along the terrain.

[0009] Preferably, there are multiple sedimentation tanks and multiple aerobic reaction tanks, and the number of sedimentation tanks is greater than the number of aerobic reaction tanks.

[0010] Preferably, the sludge discharge pipe includes multiple sludge discharge branch pipes and a sludge discharge main pipe. The number of sludge discharge branch pipes is the same as the number of sedimentation tanks. One end of each sludge discharge branch pipe is connected to and communicates with one of the sedimentation tanks, and the other end of each sludge discharge branch pipe is connected to and communicates with the sludge discharge main pipe. Each sludge discharge branch pipe is equipped with a valve, and the sludge discharge main pipe is equipped with a sludge pump.

[0011] Preferably, the aquatic product with strong tolerance to eutrophic water is one or more of silver carp, bighead carp, or crucian carp, and the aquatic plant with strong tolerance to eutrophic water is water hyacinth.

[0012] Preferably, the aquaculture pond is used for raising silverfish.

[0013] Preferably, the disinfection device includes an ultraviolet lamp.

[0014] Preferably, the microorganisms attached to the biological packing material are photosynthetic bacteria and Bacillus.

[0015] The present invention achieves the following technical advantages over the prior art:

[0016] This invention provides an aquaculture system utilizing reservoir bottom water. A sedimentation tank settles sludge from the reservoir bottom water, while a biological packing material in an aerobic reaction tank purifies the settled wastewater. A disinfection device then disinfects and sterilizes the purified reservoir bottom water, thereby enabling the reuse of the reservoir bottom water, reducing ineffective water resource loss, and improving overall water resource utilization efficiency. Furthermore, the sedimentation tank cultivates aquatic organisms and aquatic plants that are highly tolerant of eutrophic water, enhancing the secondary utilization of nutrients and further increasing the economic value of the entire aquaculture system. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of an aquaculture system utilizing reservoir bottom water;

[0019] Figure 2 A topographical distribution map of an aquaculture system utilizing reservoir bottom water.

[0020] In the diagram: 1-Reservoir; 2-Sedimentation tank; 3-Aerobic reaction tank; 4-Disinfection device; 5-Aquaculture pond; 6-Drainage pipe; 7-Aquatic plants; 8-Aquatic products; 9-Sludge discharge pipe; 10-First outlet pipe; 11-Biological packing material; 12-Second outlet pipe; 13-Third outlet pipe; 14-Silver white fish. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] The purpose of this invention is to provide an aquaculture system that utilizes reservoir bottom water to solve the problems existing in the prior art. This system enables nutrients deposited at the bottom of the reservoir to re-enter the aquaculture ecological environment cycle, strengthens the secondary utilization of nutrients, and improves water resource utilization.

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] This utility model provides an aquaculture system utilizing reservoir bottom water, such as... Figure 1 As shown, the system includes a sedimentation tank 2, an aerobic reaction tank 3, a disinfection device 4, and an aquaculture pond 5. The sedimentation tank 2 is connected to the bottom of the reservoir 1 via a drainage pipe 6. The bottom of the sedimentation tank 2 is connected to the outside via a sludge discharge pipe 9. The sedimentation tank 2 contains aquatic organisms 8 and aquatic plants that are highly tolerant to eutrophic water. The sedimentation tank 2 is connected to the aerobic reaction tank 3 via a first outlet pipe 10. The aerobic reaction tank 3 contains biological packing material 11, which is used to attach microorganisms. The aerobic reaction tank 3 is connected to the disinfection device 4 via a second outlet pipe 12. The disinfection device 4 is used to disinfect and sterilize the water at the bottom of the reservoir. The disinfection device 4 is connected to the aquaculture pond 5 via a third outlet pipe 13. The sludge in the bottom water of the reservoir is settled in sedimentation tank 2. Microorganisms attached to the surface of the biological packing material 11 in the aerobic reaction tank 3 form a biofilm. The microorganisms contact the pollutants in the sewage through the biofilm and use the pollutants as a nutrient source for metabolism, thereby purifying the settled sewage. The disinfection device 4 disinfects and sterilizes the purified bottom water, thereby enabling the reuse of the bottom water, reducing the ineffective loss of water resources, and improving the overall efficiency of water resource utilization. In addition, aquatic products 8 and aquatic plants 7 that are highly tolerant to eutrophic water are cultivated in sedimentation tank 2, which enhances the secondary utilization of nutrients and further improves the economic value of the entire aquaculture system.

[0025] In a further preferred embodiment of this invention, the bottom of the sedimentation tank 2 is an inverted conical bottom, and a sludge discharge port is provided at the bottom of the inverted conical bottom, which is connected and communicates with the sludge discharge pipe 9. The inverted conical bottom allows the settled sludge to automatically slide along the inclined surface towards the sludge discharge port, improving sludge discharge efficiency.

[0026] In a further preferred embodiment of this utility model, a first water outlet is provided in the middle of the side wall of the sedimentation tank 2 to prevent the sludge deposited at the bottom from being discharged, and the first water outlet is connected and communicated with the first water outlet pipe 10.

[0027] A further preferred embodiment of this utility model is, as follows: Figure 2 As shown, sedimentation tank 2, aerobic reaction tank 3, disinfection device 4, and aquaculture tank 5 are arranged sequentially from high to low along the terrain. Utilizing the terrain difference, the water at the bottom of the reservoir can naturally flow from the high tank to the low tank, and water exchange in aquaculture tank 5 can be achieved without additional power equipment, saving energy costs such as electricity.

[0028] In a further preferred embodiment of this invention, there are multiple sedimentation tanks 2 and multiple aerobic reaction tanks 3, with the number of sedimentation tanks 2 exceeding the number of aerobic reaction tanks 3. This ensures that the sludge in the bottom water of the reservoir can settle thoroughly, thereby improving the purification rate.

[0029] In a further preferred embodiment of this utility model, the sludge discharge pipe 9 includes multiple sludge discharge branch pipes and a sludge discharge main pipe. The number of sludge discharge branch pipes is the same as the number of sedimentation tanks 2. One end of each sludge discharge branch pipe is connected to and communicates with a sedimentation tank 2, and the other end of each sludge discharge branch pipe is connected to and communicates with the sludge discharge main pipe. Each sludge discharge branch pipe is equipped with a valve, and the sludge discharge main pipe is equipped with a sludge pump.

[0030] In a further preferred embodiment of this utility model, the aquatic animal 8 that is highly tolerant to eutrophic water is one or more of filter-feeding silver carp, bighead carp, or crucian carp that feeds on bottom debris, algae, etc., and the aquatic plant 7 that is highly tolerant to eutrophic water is water hyacinth, which can absorb nitrogen and phosphorus and has a water purification function.

[0031] In a further preferred embodiment of this utility model, the water quality of the reservoir bottom water after treatment by the sedimentation tank 2, the aerobic reaction tank 3, and the disinfection device 4 is better, and the aquaculture pond 5 can be directly used to raise fish that have high requirements for water quality, such as silver carp 14, thereby improving the economic benefits of the aquaculture system.

[0032] In a further preferred embodiment of this utility model, the disinfection device 4 includes an ultraviolet lamp.

[0033] In a further preferred embodiment of this invention, the microorganisms attached to the biological packing 11 are photosynthetic bacteria and Bacillus. The biological packing 11 provides a surface for the attachment and growth of photosynthetic bacteria and Bacillus, enabling them to exist and reproduce stably in a specific treatment system. The photosynthetic bacteria and Bacillus can form a dense biofilm on the surface of the biological packing 11. The Bacillus in the biofilm can effectively degrade organic pollutants such as proteins, starches, and fats in wastewater, converting them into carbon dioxide, water, and other harmless substances, thereby achieving the purpose of purifying the water quality. The photosynthetic bacteria in the biofilm can utilize the organic pollutants in the wastewater through photosynthesis, converting them into harmless substances, thus achieving wastewater purification.

[0034] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An aquaculture system utilizing reservoir bottom water, characterized in that: The system includes a sedimentation tank, an aerobic reaction tank, a disinfection device, and an aquaculture pond. The sedimentation tank is connected to the bottom of the reservoir via a drainage pipe, and the bottom of the sedimentation tank is connected to the outside via a sludge discharge pipe. The sedimentation tank contains aquatic organisms and aquatic plants that are highly tolerant of eutrophic water. The sedimentation tank is connected to the aerobic reaction tank via a first effluent pipe. The aerobic reaction tank contains biological packing material for attaching microorganisms. The aerobic reaction tank is connected to the disinfection device via a second effluent pipe, which is used to disinfect and sterilize the water at the bottom of the reservoir. The disinfection device is connected to the aquaculture pond via a third effluent pipe.

2. The aquaculture system utilizing reservoir bottom water according to claim 1, characterized in that: The bottom of the sedimentation tank is an inverted cone shape, and a sludge discharge port is provided at the bottom of the inverted cone shape. The sludge discharge port is connected to and communicates with the sludge discharge pipe.

3. The aquaculture system utilizing reservoir bottom water according to claim 1, characterized in that: The sedimentation tank has a first outlet in the middle of its side wall, and the first outlet is connected to and communicates with the first outlet pipe.

4. The aquaculture system utilizing reservoir bottom water according to claim 1, characterized in that: The sedimentation tank, the aerobic reaction tank, the disinfection device, and the aquaculture pond are arranged in sequence from high to low along the terrain.

5. The aquaculture system utilizing reservoir bottom water according to claim 1, characterized in that: The number of sedimentation tanks is greater than the number of aerobic reaction tanks.

6. The aquaculture system utilizing reservoir bottom water according to claim 5, characterized in that: The sludge discharge pipe includes multiple sludge discharge branch pipes and a sludge discharge main pipe. The number of sludge discharge branch pipes is the same as the number of sedimentation tanks. One end of each sludge discharge branch pipe is connected to and communicates with one of the sedimentation tanks, and the other end of each sludge discharge branch pipe is connected to and communicates with the sludge discharge main pipe. Each sludge discharge branch pipe is equipped with a valve, and the sludge discharge main pipe is equipped with a sludge pump.

7. The aquaculture system utilizing reservoir bottom water according to claim 1, characterized in that: The aquatic products with strong tolerance to eutrophic water bodies are one or more of silver carp, bighead carp, or crucian carp, and the aquatic plants with strong tolerance to eutrophic water bodies are water hyacinth.

8. The aquaculture system utilizing reservoir bottom water according to claim 1, characterized in that: The breeding pond is used for raising silver carp.

9. The aquaculture system utilizing reservoir bottom water according to claim 1, characterized in that: The disinfection device includes an ultraviolet lamp.

10. The aquaculture system utilizing reservoir bottom water according to claim 1, characterized in that: The microorganisms attached to the biological packing material are photosynthetic bacteria and Bacillus.

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