Self-circulation system for ecological management of aquaculture tail water
By designing a self-circulation system for ecological governance of aquaculture tailwater, using the absorption capacity of algae and microorganisms to achieve multiple cycle purification of tailwater, the problems of poor tailwater treatment and waste in the existing technology have been solved, and efficient , economic tailwater management and resource utilization.
Patent Information
- Application Number
- CN202420772979.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-15
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-04-15
AI Technical Summary
The existing tailwater treatment methods for aquaculture have conventional sewage treatment models such as filtration, precipitation, microbial decomposition, and plant absorption. They fail to effectively combine the characteristics of fishery production, resulting in poor tailwater treatment, large area occupied and lack of economic benefits.
A self-circulation system for ecological control of aquaculture tail water was designed, including aquaculture ponds, algae oxidation ponds, microbial purification ponds and air float purification ponds. Through water guide mechanisms, water pushers, micro bubble water generation devices and suspended fish pond slags Components such as instruments extend the flow time of tail water, enhance biological absorption capacity, and realize resource utilization and multiple cycle purification.
Effectively reduce the emission of harmful substances, improve the effect of tailwater treatment, realize the secondary utilization of resources, small area and low construction costs, and bring economic benefits.
Smart Images
Figure CN222274303U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a self-circulating system, in particular to an aquaculture tail water ecological management self-circulating system, belonging to the field of aquaculture tail water management. Background Art
[0002] During aquaculture, after feeding the fish, a large amount of residual bait and feces, as well as harmful substances such as ammonia nitrogen and nitrate nitrogen dissolved in water, will be produced in the fish pond. In order to discharge the residual bait and feces, the fish pond will often discharge tail water to the outside of the pond through the bottom discharge method. These tail waters are heavily polluted and often appear black and smelly. If they are not treated and discharged directly, they will seriously pollute rivers, lakes and other water bodies. The existing fish pond tail water treatment methods mainly include three pools and two dams, ecological ditches and other models. These models have certain treatment effects, but there are some shortcomings. First, the idea is still the conventional sewage treatment model, filtration, sedimentation, microbial decomposition, plant absorption, etc., which is not combined with the characteristics of fishery production. Second, it occupies a large area. Third, farmers lack the enthusiasm for subsequent operations. Because the maintenance of these facilities and equipment cannot bring subsequent benefits to farmers.
[0003] In order to solve the above problems, we adopt a completely new perspective to treat tailwater. First of all, we should understand that leftover bait, feces, ammonia nitrogen, nitrate nitrogen, etc. dissolved in water all come from feed, and these are all usable resources. Secondly, since it is tailwater generated in the process of aquaculture, the factor of fish should be taken into account. Most fish cannot directly consume leftover bait, feces, ammonia nitrogen, and nitrate nitrogen dissolved in water, but microorganisms and algae can consume these, and fish can consume algae. According to this principle, tailwater can be utilized as a resource. Therefore, it is necessary to design a circulation system that has a good tailwater treatment effect and realizes resource utilization (secondary utilization of debris, leftover bait, feces, etc.) during the treatment process. Utility Model Content
[0004] The purpose of the utility model is to solve the above-mentioned shortcomings and provide a self-circulating system for ecological management of aquaculture tail water, which greatly reduces the emission of harmful substances, rationally utilizes biological characteristics, improves the economic benefits of management, and reduces resource loss and waste.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A self-circulating system for ecological management of aquaculture tail water comprises a breeding pond and a detoxification pond, wherein the detoxification pond is connected with an algae oxidation pond in sequence; a water guiding mechanism is arranged in the algae oxidation pond; the algae oxidation pond has an inlet end and an outlet end; the inlet end is connected with the detoxification pond; the outlet end is connected with a microbial purification pond; the microbial purification pond is connected with an air flotation purification pond; the air flotation purification pond is connected with the breeding pond through a clean water return pipeline; the air flotation purification pond is connected with the algae oxidation pond through a scum return pipeline.
[0007] Furthermore, the water guide mechanism includes a plurality of water guide walls; the water guide walls are arranged above the water surface; each of the water guide walls is arranged along the length direction of the algae oxidation pond; each of the water guide walls is distributed in the width direction of the algae oxidation pond and divides the algae oxidation pond into a plurality of first culture chambers interconnected with each other; an aeration fan and a bottom aeration device are arranged in the detoxification pool.
[0008] Furthermore, it also includes a water pusher; the water pusher includes at least one; the water outlet direction of the water outlet pipe of each water pusher is consistent with the water flow direction of the culture chamber; the water inlet end is arranged at the upper part of the algae oxidation pond close to the detoxification tank; the water outlet end is arranged at the lower part of the other side of the algae oxidation pond relative to the water inlet end; and an opening and closing valve is arranged in the water outlet end.
[0009] Furthermore, a hanging grid for hanging microbial fillers is provided on the microbial purification pool; the bottom of the hanging grid forms a second culture chamber.
[0010] Furthermore, a micro-bubble water generating device and a suspended fish pond skimmer are provided in the flotation purification tank; the fish pond skimmer is connected to a scum return pipeline; and a liquid level sensor and a return water pump are also provided in the flotation purification tank.
[0011] Furthermore, the liquid level sensor and the reflux water pump are respectively connected to the controller; and the reflux water pump is connected to the clean water reflux pipeline.
[0012] Furthermore, it also includes a photovoltaic power generation device; the photovoltaic power generation device is connected to the water pusher, the micro-bubble water generating device, the fish pond skimmer, the reflux water pump and the aeration fan respectively.
[0013] The utility model has the following beneficial effects: 1) Reasonably utilize the characteristics of animals to realize the resource utilization of residual substances in the tail water: a water guide mechanism is arranged in the algae oxidation pond, which can prolong the flow time of the tail water in the algae oxidation pond, and cooperate with the water pusher to enable the tail water to circulate back and forth in the algae oxidation pond. In addition, the contact time between the tail water and the algae is prolonged, and the algae can better absorb various substances and elements in the tail water (such as residual bait feces, ammonia nitrogen, nitrate nitrogen, etc.), and then the fish in the algae oxidation pond will absorb the algae. While purifying the tail water, it can provide nutrients for the fish and generate economic benefits.
[0014] 2) A large number of protozoa are also cultivated in the microbial purification pool, which can further absorb the organic debris in the tail water and improve the efficiency of secondary utilization of resources.
[0015] 3) After the tail water passes through the microbial purification pool, it enters the flotation purification pool. The micro bubble water generator can form bubbles from the suspended matter in the water, which floats on the water surface. The suspended matter is collected by the suspended fish pond skimmer and transferred to the algae oxidation pond to be consumed by algae and fish. After multiple cycles of purification, the tail water treatment effect can be greatly improved.
[0016] 4) The tail water after the above treatment process can re-enter the breeding pond to realize the secondary utilization of water resources and improve resource utilization rate; it can also be discharged to the outside without causing pollution to the environment.
[0017] 5) Finally, this design occupies a very small area, only 3% of the breeding area, and the construction cost is extremely low. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the connection relationship of the utility model.
[0019] Figure 2 Schematic diagram of the internal structure of the algae oxidation pond (top view).
[0020] Figure 3 Schematic diagram of the internal structure of the algae oxidation pond (side view).
[0021] Figure 4 Schematic diagram of the internal structure of the microbial purification tank.
[0022] Figure 5 This is a schematic diagram of the structure of the flotation purification tank.
[0023] In the figure: 1 is a breeding pond, 2 is a detoxification pond, 21 is an aeration fan, 22 is a bottom aeration device, 3 is an algae oxidation pond, 31 is an inlet end, 32 is an outlet end, 33 is a first breeding chamber, 4 is a microbial purification tank, 41 is a second breeding chamber, 5 is an air flotation purification tank, 51 is a micro bubble generating device, 52 is a suspended fish pond skimmer, 6 is a clean water return pipeline, 7 is a scum return pipeline, 8 is a water guide wall, 9 is a water pusher, 010 is a hanging grille, 011 is a return water pump, and 012 is a photovoltaic power generation device. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] The terms used herein, including technical and scientific terms, have the same meaning as those generally understood by those skilled in the art, unless the terms are defined differently. It should be understood that the terms defined in commonly used dictionaries have the same meaning as those in the prior art.
[0026] See also Figure 1-Figure 5
[0027] A self-circulating system for ecological management of aquaculture tail water comprises a culture pond 1 and a detoxification pond 2, wherein the detoxification pond 2 is connected with an algae oxidation pond 3 in sequence; a water guide mechanism is arranged in the algae oxidation pond 3; the algae oxidation pond 3 has an inlet end 31 and an outlet end 32; the inlet end 31 is connected with the detoxification pond 2; the outlet end 32 is connected with a microbial purification pond 4; the microbial purification pond 4 is connected with an air flotation purification pond 5; the air flotation purification pond 5 is connected with the culture pond 1 through a clean water return pipeline 6; the air flotation purification pond 5 is connected with the algae oxidation pond 3 through a scum return pipeline 7.
[0028] Furthermore, the water guide mechanism includes a plurality of water guide walls 8; the water guide walls 8 are arranged above the water surface; each of the water guide walls 8 is arranged along the length direction of the algae oxidation pond 3; each of the water guide walls 8 is distributed in the width direction of the algae oxidation pond 3, and divides the algae oxidation pond 3 into a plurality of first culture chambers 33 interconnected with each other; an aeration fan 21 and a bottom aeration device 22 are arranged in the detoxification pool 2.
[0029] Furthermore, it also includes a water pusher 9; the water pusher 9 includes at least one; the water outlet direction of the outlet pipe of each water pusher is consistent with the water flow direction of the first breeding chamber 33; the water inlet end 31 is arranged at the upper part of the algae oxidation pond 3 close to the detoxification pool 2; the water outlet end 32 is arranged at the lower part of the other side of the algae oxidation pond 3 relative to the water inlet end 31; the water outlet end 32 is provided with an opening and closing valve.
[0030] The water pusher 9 in this embodiment is a common device in the field of fish farming, and its specific principle is not repeated here. It mainly includes a water outlet pipe and a pump body. The water outlet pipe is arranged at the edge of the algae oxidation pond 3 so that its water outlet direction is consistent with the water flow direction in each first culture chamber 33 to promote the circulation of tail water in the algae oxidation pond 3. When the number of cycles or the retention time of the tail water reaches the requirement, the on-off valve in the water outlet end 32 can be opened to guide the tail water to the microbial purification pool 4.
[0031] Specifically, the first culture chamber 33 in the algae oxidation pond 3 needs to culture filter-feeding fish, such as silver carp and bighead carp in freshwater, herring and sardines in seawater, and organisms that eat organic debris, such as fine-scaled bream, loach, and snails in freshwater, and shrimps and shellfish in seawater.
[0032] Furthermore, the microbial purification pool 4 is provided with a hanging grid 010 for hanging microbial fillers; the bottom of the hanging grid 010 forms a second culture chamber 41.
[0033] In this embodiment, the tail water flowing from the algae oxidation pond 3 into the microbial purification pool 4 can absorb the debris in the tail water under the action of the microbial filler. In addition, due to the presence of the second culture chamber 41, the microbial purification pool 4 can not only cultivate microorganisms, but also cultivate a large number of protozoa, which can further absorb organic debris. The microbial purification pool can be appropriately fed with organisms such as snails and crayfish.
[0034] Furthermore, the flotation purification tank 5 is provided with a micro-bubble water generating device 51 and a suspended fish pond skimmer 52; the fish pond skimmer 52 is connected to the scum return pipeline 7; the flotation purification tank 5 is also provided with a liquid level sensor and a return water pump 011.
[0035] In this embodiment, the micro-bubble water generating device 51 and the suspended fish pond skimmer 52 are both mature products in this field, so their principles are not described in detail. The micro-bubble water generating device 51 directly takes water from the flotation purification pool 5 and forms bubbles on the water surface. The bubbles can form scum from the suspended matter in the water and float on the water surface; then the suction force generated by the suspended fish pond skimmer 52 is used to absorb the scum and transfer it to the algae oxidation pond 3, and the scum and debris are treated for the second time. After multiple treatments, the tail water can meet the standard for secondary utilization.
[0036] Furthermore, the liquid level sensor and the reflux water pump are connected to the controller respectively; the reflux water pump 10 is connected to the clean water reflux pipeline 6
[0037] In this embodiment, the tail water in the flotation purification tank 5 has reached the standard of being discharged or used for the breeding pond again after multiple treatments, and can be transferred back to the breeding pond 1 through the clean water return pipeline 6, or can be directly discharged. When the liquid level sensor detects that the water level in the flotation purification tank 5 is high, the discharge or recycling operation can be performed.
[0038] Furthermore, it also includes a photovoltaic power generation device 012; the photovoltaic power generation device 012 is respectively connected to the water pusher, the micro-bubble water generating device, the fish pond skimmer, the return water pump and the aeration fan.
[0039] Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the utility model rather than limiting it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. An aquaculture tailwater ecological management self-circulation system, comprising a breeding pond and a detoxification pond, characterized in that: The detoxification pool is connected with the algae oxidation pond in sequence; a water guide mechanism is arranged in the algae oxidation pond; the algae oxidation pond has a water inlet and a water outlet; the water inlet is connected with the detoxification pool; the water outlet is connected with the microbial purification pool; the microbial purification pool is connected with the air flotation purification pool; the air flotation purification pool is connected with the breeding pool through a clean water return pipeline; the air flotation purification pool is connected with the algae oxidation pond through a scum return pipeline.
2. The aquaculture tailwater ecological management self-circulation system according to claim 1 is characterized by: The water guide mechanism includes a plurality of water guide walls; the water guide walls are arranged above the water surface; each of the water guide walls is arranged along the length direction of the algae oxidation pond; each of the water guide walls is distributed in the width direction of the algae oxidation pond and divides the algae oxidation pond into a plurality of first culture chambers interconnected with each other; an aeration fan and a bottom aeration device are arranged in the detoxification pool.
3. The aquaculture tailwater ecological management self-circulation system according to claim 2 is characterized by: It also includes a water pusher; the water pusher includes at least one; the water outlet direction of the water outlet pipe of each water pusher is consistent with the water flow direction of the culture chamber; the water inlet end is arranged at the upper part of the algae oxidation pond close to the detoxification pool; the water outlet end is arranged at the lower part of the other side of the algae oxidation pond relative to the water inlet end; and an opening and closing valve is arranged in the water outlet end.
4. The aquaculture tailwater ecological management self-circulation system according to claim 1 is characterized by: The microbial purification pool is provided with a hanging grid for hanging microbial fillers; the bottom of the hanging grid forms a second culture cavity.
5. The aquaculture tailwater ecological management self-circulation system according to claim 4 is characterized by: The air flotation purification pool is provided with a micro bubble water generating device and a suspended fish pond skimmer; the fish pond skimmer is connected to a floating scum return pipeline; the air flotation purification pool is also provided with a liquid level sensor and a return water pump.
6. The aquaculture tailwater ecological management self-circulation system according to claim 5 is characterized by: The liquid level sensor and the reflux water pump are connected to the controller respectively; and the reflux water pump is connected to the clean water reflux pipeline.
7. The aquaculture tailwater ecological management self-circulation system according to claim 1 is characterized by: It also includes a photovoltaic power generation device; the photovoltaic power generation device is connected to the water pusher, the micro-bubble water generating device, the fish pond skimmer, the return water pump and the aeration fan respectively.