Breeding tail water treatment system
By designing a breeding tailwater treatment system that includes grid pools, ozone air float components and nitrogen and phosphorus discharge tanks, the problem of difficulty in removing total suspended particles and microorganisms in traditional systems is solved, and water quality improvement and fish health protection are achieved.
Patent Information
- Application Number
- CN202421628847.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-11
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-11
AI Technical Summary
Traditional aquaculture tailwater treatment systems are difficult to effectively remove total suspended particulate matter and microorganisms, resulting in slow growth or death of fish, and the treated tailwater flows back into the aquaculture ponds may cause disease.
Design a breeding tail water treatment system, including grid tanks, ozone air float components and nitrogen and phosphorus discharge tanks. The grid pool separates the floating substances, the ozone gas floating component removes suspended particles and kills microorganisms through ozone gas flotation, and the nitrogen and phosphorus detachment pool uses submerged plants to absorb inorganic nitrogen and phosphorus.
Effectively remove total suspended particles and microorganisms in tail water, improve water quality, prevent fish diseases, extend the water flow path to reduce the concentration of inorganic nitrogen and phosphorus, and avoid eutrophication of tail water.
Smart Images
Figure CN222795362U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of aquaculture, in particular to a system for treating aquaculture tail water. Background Art
[0002] Traditional aquaculture effluent is mostly treated by sedimentation and filtration. During the treatment process, the residual bait and excrement in the tail water are precipitated and filtered, and the filtered wastewater is directly discharged; the sediment is removed after a period of time and used directly as fertilizer.
[0003] In this process, total suspended particulate matter (TSS) is difficult to remove, which is harmful to fish, causing slow growth and even death. In addition, after the treated tail water is recycled back to the breeding pond, the microorganisms remaining in the tail water can easily cause fish diseases, resulting in serious economic losses. Utility Model Content
[0004] In view of this, it is necessary to provide an aquaculture tailwater treatment system to solve the problem that the existing tailwater treatment system is difficult to handle the negative impact of total suspended particulate matter and microorganisms on fish.
[0005] The utility model provides an aquaculture tail water treatment system for recycling aquaculture tail water, which includes:
[0006] A grid tank capable of separating floating objects;
[0007] An ozone flotation component, the ozone flotation component sequentially comprises a first flotation reaction unit, a second flotation reaction unit and an ozone generator, the ozone generator is arranged at the bottom of the first flotation reaction unit and is connected to the flotation reaction unit, the ozone generator can provide flotation gas containing ozone to the flotation reaction unit, float and separate total suspended particulate matter (TSS) and kill microorganisms; the second flotation reaction unit can remove excess ozone in the water body by flotation;
[0008] A nitrogen and phosphorus removal pool, comprising a relatively tortuous channel, wherein submerged plants for absorbing inorganic nitrogen and phosphorus are arranged in the channel.
[0009] Furthermore, the grid pool includes a pool body and a plurality of grid nets arranged in sequence, the plurality of grid nets are detachably connected to the pool body, and different grid nets can separate solid floating objects of different sizes.
[0010] Furthermore, the first flotation reaction unit includes a first flotation tank and a first microporous aeration plate, the first microporous aeration plate is arranged at the bottom of the first flotation tank and immersed in the water body, the ozone generator is connected to the first microporous aeration plate through a pipeline, and the first microporous aeration plate can spray ozone gas into the water body.
[0011] Furthermore, the second flotation reaction unit includes a second flotation tank and a second microporous aeration plate, the second microporous aeration plate is arranged at the bottom of the second flotation tank and immersed in the water body, the second microporous aeration plate is connected to the vacuum pump, and the second microporous aeration plate can spray air into the water body.
[0012] Furthermore, the ozone flotation assembly also includes an ozone concentration detector, and the ozone concentration detector is arranged in the second flotation tank.
[0013] Furthermore, it also includes a sedimentation component arranged between the grid pool and the first flotation reaction unit, the sedimentation component includes a sedimentation tank and a pool bottom suction unit, the bottom of the sedimentation tank is funnel-shaped or wedge-shaped, and the pool bottom suction unit is connected to the bottom of the sedimentation tank for sucking sediment.
[0014] Furthermore, the channel is a hairpin-shaped channel, and the channel has a plurality of right-angle turning portions.
[0015] Furthermore, the interior of the channel is filled with porous activated carbon base material.
[0016] Compared with the prior art, the utility model has the following beneficial effects:
[0017] (1) The utility model discloses an aquaculture tailwater treatment system, which is provided with an ozone flotation component, which includes a first flotation reaction unit, a second flotation reaction unit and an ozone generator in sequence. The ozone generator is arranged at the bottom of the first flotation reaction unit and is connected to the flotation reaction unit. The ozone generator generates flotation gas containing ozone, which is injected into the first flotation reaction unit. The ozone gas drives the suspended particles to float to the water surface through tiny bubbles, forming a scum layer, which is then removed by a scraper or other means. At the same time, the strong oxidizing property of ozone enables it to destroy the cell walls of microorganisms, achieve a sterilization effect, and prevent microorganisms from causing diseases to farmed fish. The second flotation reaction unit can continue to aerate the ozone flotation treated water, use bubbles to bring the remaining ozone out of the water body, remove excess ozone, and prevent excess ozone from entering the downstream treatment unit or flowing back to the aquaculture pond, which will have an adverse effect on fish and other aquatic organisms.
[0018] (2) The utility model provides a breeding tailwater treatment system, which is provided with a nitrogen and phosphorus removal pool, which includes a relatively tortuous channel, which can extend the flow path of the water flow. Submerged plants for absorbing inorganic nitrogen and phosphorus are arranged in the channel, which can increase the contact time between water and submerged plants. Submerged plants can effectively absorb inorganic nitrogen and phosphorus in water, reduce their concentration, and avoid eutrophication of tailwater flowing back into the breeding pond, which interferes with the growth of farmed fish. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:
[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0021] Figure 2 It is a structural schematic diagram of the nitrogen and phosphorus removal pool in the utility model.
[0022] In the figure, 100, grid pool; 110, grid network;
[0023] 200, ozone flotation assembly; 210, first flotation reaction unit; 211, first flotation tank; 212, first microporous aeration plate; 220, second flotation reaction unit; 221, second flotation tank; 222, second microporous aeration plate; 223, ozone concentration detector; 230, ozone generator;
[0024] 300, nitrogen and phosphorus removal pool; 310, channel; 311, right-angle turning part;
[0025] 400. Sedimentation assembly; 410. Sedimentation tank; 420. Suction unit. DETAILED DESCRIPTION
[0026] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.
[0027] In the aquaculture tailwater treatment system of this embodiment, two groups of flotation devices are set during the tailwater treatment process. One group of flotation devices transports ozone to kill microorganisms while removing total suspended particulate matter (TSS) by flotation. The other group of flotation devices can aerate the tailwater containing ozone to separate the ozone from the water body and avoid the damage of ozone to aquaculture products.
[0028] See also Figure 1 to Figure 2In this embodiment, a breeding tailwater treatment system includes, in sequence along the water flow direction, a grid pool 100, an ozone flotation assembly 200, and a nitrogen and phosphorus removal pool 300. The grid pool 100 can separate solid floating matter in the water body, and the ozone flotation assembly 200 can use ozone to float the water body, while separating the total suspended particulate matter (TSS), it can also eliminate microorganisms in the water body that may cause diseases to farmed fish. The nitrogen and phosphorus removal pool 300 can absorb inorganic matter in the water body to avoid eutrophication in the breeding pond and interfere with the growth of farmed fish.
[0029] The grid pool 100 can intercept larger floating objects in the tail water, such as leftover bait, fish feces and other impurities, to prevent them from entering the subsequent treatment units, thereby reducing the burden of subsequent treatment.
[0030] The ozone flotation assembly 200 includes a first flotation reaction unit 210, a second flotation reaction unit 220 and an ozone generator 230 in sequence. The ozone generator 230 is arranged at the bottom of the first flotation reaction unit 210 and is connected to the flotation reaction unit. The ozone generator 230 generates flotation gas containing ozone and injects it into the first flotation reaction unit 210. The ozone gas drives the suspended particles to float to the water surface through tiny bubbles to form a scum layer, which is then removed by a scraper or other means. At the same time, the strong oxidizing property of ozone enables it to destroy the cell wall of microorganisms, achieve a sterilization effect, and prevent microorganisms from causing diseases to farmed fish. The second flotation reaction unit 220 can continue to aerate the ozone flotation treated, use bubbles to take the remaining ozone out of the water body, remove excess ozone, and prevent excess ozone from entering the downstream treatment unit or flowing back to the breeding pond, which will have an adverse effect on fish and other aquatic organisms.
[0031] The nitrogen and phosphorus removal pool 300 includes a relatively tortuous channel 310, which can extend the flow path of the water flow. Submerged plants for absorbing inorganic nitrogen and phosphorus are arranged in the channel 310, which can increase the contact time between water and the submerged plants. The submerged plants can effectively absorb inorganic nitrogen and phosphorus in the water, reduce their concentration, and avoid eutrophication of tail water flowing back into the breeding pond, which interferes with the growth of farmed fish.
[0032] It should be particularly noted that the grid pool 100 , the first air flotation reaction unit 210 , the second air flotation reaction unit 220 and the nitrogen and phosphorus removal pool 300 are connected by a water pump and a water pipe to achieve the transportation and movement of the water body.
[0033] In some embodiments, see Figure 1The grid pool 100 includes a pool body and a plurality of grid nets 110 arranged in sequence. The plurality of grid nets 110 are detachably connected to the pool body. Card slots are provided on both sides of the pool body. Both sides of the grid nets 110 are inserted into the card slots, so that the grid nets 110 can be easily cleaned and maintained. When a large amount of solid floating objects accumulate on the grid nets 110, they can be easily removed for cleaning without stopping the entire system, thereby reducing the maintenance cost and downtime of the system and ensuring the continuous operation and stability of the system.
[0034] A plurality of grid nets 110 are arranged in sequence, and each grid net 110 has a different mesh size, which can separate solid floating objects of different sizes in sequence. The first layer of grid nets 110 intercepts larger floating objects, such as leaves, leftover bait, etc., and the subsequent layers of grid nets 110 gradually intercept smaller particles. Through multi-stage separation, the amount of suspended particles entering the subsequent treatment unit can be reduced, the efficiency of the overall treatment system can be improved, and the treatment effect of the subsequent treatment units such as the ozone flotation component 200 and the nitrogen and phosphorus removal tank 300 can be ensured.
[0035] In some embodiments, see Figure 1 The first flotation reaction unit 210 includes a first flotation tank 211 and a first microporous aeration plate 212. The first microporous aeration plate 212 is arranged at the bottom of the first flotation tank 211 and immersed in the water body. The first microporous aeration plate 212 can generate a large number of tiny bubbles. During the rising process of the bubbles in the water, they can effectively adhere to the suspended particulate matter (TSS) in the water and bring it to the water surface to form scum, thereby achieving an efficient flotation separation effect. The surface area of the tiny bubbles is large, which increases the contact opportunity with the suspended particulate matter and significantly improves the removal rate of TSS.
[0036] The ozone generator 230 is connected to the first microporous aeration plate 212 through a pipeline. The first microporous aeration plate 212 can spray ozone gas into the water body. The microporous aeration plate can evenly distribute the ozone gas at the bottom of the entire flotation tank, so that the ozone can be fully dissolved and diffused in the water body, ensuring that every part of the water body can be exposed to ozone. Ozone can contact organic matter and microorganisms in the water more efficiently, enhancing its oxidation and sterilization effects. Ozone can reduce the concentration of pathogens in the water body, reduce the probability of farmed fish getting sick, and improve the success rate and economic benefits of farming.
[0037] In some embodiments, please refer to Figure 1The second flotation reaction unit 220 includes a second flotation tank 221 and a second microporous aeration plate 222. The second microporous aeration plate 222 is arranged at the bottom of the second flotation tank 221 and immersed in the water body. The second microporous aeration plate 222 is connected to a vacuum pump. The second microporous aeration plate 222 forms a large number of tiny bubbles by ejecting air. The bubbles can effectively absorb and carry excess ozone in the water. As the bubbles rise to the water surface and escape, the ozone is also removed from the water body. By removing excess ozone in the water body and preventing it from flowing back to the breeding pond, fish and other aquatic organisms are protected from excessive ozone and water quality safety is ensured.
[0038] At the same time, the bubbles formed by air aeration can not only carry ozone to escape, but also adhere to suspended particulate matter (TSS) in the water, bringing it to the water surface to form a scum layer, thereby further removing TSS and improving water quality. The sprayed air contains oxygen, and as the bubbles dissolve, the dissolved oxygen (DO) concentration in the water will increase. This is beneficial to water quality and provides sufficient oxygen for fish and beneficial microorganisms in the breeding pond.
[0039] In some embodiments, see Figure 1 The ozone flotation assembly 200 also includes an ozone concentration detector 223, which is disposed in the second flotation tank 221. In the process of using ozone as a disinfectant and a flotation agent, the concentration of ozone needs to be precisely controlled. Excessive ozone can cause poisoning to fish and other aquatic organisms in the water body. The ozone concentration detector 223 can monitor the ozone concentration in the second flotation tank 221. When the ozone concentration is higher than the set concentration, the second microporous aeration disk 222 continues to work, aerates the water body, and removes ozone from the water body. Until the ozone concentration in the water body is lower than the set concentration, the second microporous aeration disk 222 can stop working and the water body is qualified for treatment.
[0040] In some embodiments, please refer to Figure 1 The aquaculture tailwater treatment system also includes a sedimentation component 400, which is arranged between the grid pool 100 and the first flotation reaction unit 210. The sedimentation component 400 includes a sedimentation tank 410 and a pool bottom suction unit. By setting up the sedimentation tank 410 and utilizing the principle of gravity sedimentation, the fine suspended particles in the tailwater are naturally settled to the bottom of the pool, which can effectively remove the fine suspended particles (TSS) in the tailwater, greatly reduce the content of suspended particles entering the flotation reaction unit, and improve the efficiency and effect of the overall treatment system.
[0041] The bottom of the sedimentation tank 410 is funnel-shaped or wedge-shaped, and the bottom suction unit is connected to the bottom of the sedimentation tank 410. The bottom suction unit can suck the sediment at the bottom of the sedimentation tank 410. The funnel-shaped or wedge-shaped setting allows the sediment to naturally concentrate in the center of the bottom of the tank, which is convenient for the bottom suction unit to efficiently suck and clean, prevent sediment accumulation, and maintain the sedimentation tank 410 in good operating condition.
[0042] In the specific implementation process, the bottom suction unit is a suction pump with a pipeline, which can clean the sediment at the bottom of the sedimentation tank 410, prevent the sedimentation tank 410 from being blocked and the sediment from being suspended again, ensure the continuous and effective operation of the sedimentation tank 410, and improve the stability and reliability of the overall system.
[0043] In some embodiments, see Figure 2 The channel 310 is a hairpin-shaped channel 310 having a plurality of right-angle turning portions 311. The hairpin-shaped channel 310 allows the water flow to zigzag in the channel 310, significantly extending the water flow path, and increasing the residence time of the water in the channel 310, which provides more reaction time for the removal of nitrogen and phosphorus and microbial treatment, thereby improving the treatment effect.
[0044] The design of multiple right-angle turning parts 311 forces the water flow to change direction multiple times in the channel 310, increasing the contact opportunities between the water body and the submerged plants in the channel 310. The submerged plants have more time and opportunities to absorb inorganic nitrogen and phosphorus in the water, significantly improving the nitrogen and phosphorus removal efficiency, reducing the nutrient salt content in the water body, and preventing eutrophication of the water body.
[0045] The right-angle turn 311 slows down the water flow speed, which helps the suspended particles to naturally settle to the bottom of the channel 310. Multiple turns increase the sedimentation opportunities of the particles, further reducing the total suspended particles (TSS) in the water and improving the transparency and quality of the water body.
[0046] In some embodiments, the interior of the channel 310 is filled with a porous activated carbon base material, which can absorb the fishy smell in the water and improve the atmospheric environment of the breeding area.
[0047] Workflow: First, use a water pump to pump the water in the breeding pond into the grid pool 100. The grid net 110 in the grid pool 100 can intercept larger floating objects in the tail water, such as leftover bait, fish feces and other impurities, to prevent them from entering the subsequent treatment unit, thereby reducing the burden of subsequent treatment. Next, the water in the grid pool 100 is sucked into the sedimentation tank 410. The sedimentation tank 410 can use the principle of gravity sedimentation to allow the fine suspended particles in the tail water to naturally settle to the bottom of the pool, effectively removing the fine suspended particles (TSS) in the tail water. Then, the water in the sedimentation tank 410 is sucked into the first flotation tank 211. The first microporous aeration plate 212 generates tiny bubbles containing ozone through the ozone generator 230, which promotes the formation of scum from suspended particles (TSS) while killing microorganisms in the water, reducing the concentration of pathogens in the water, reducing the probability of farmed fish becoming sick, and improving the success rate and economic benefits of farming. Next, the water in the first flotation pool 211 is sucked into the second flotation pool 221, and the second microporous aeration plate 222 aerates the water to remove excess ozone in the water, preventing it from flowing back into the breeding pond, protecting fish and other aquatic organisms from excessive ozone, and ensuring water quality safety. Finally, the second flotation pool 221 is sucked into the channel 310, and the submerged plants in the channel 310 can absorb inorganic nitrogen and phosphorus in the water, reduce their concentration, and avoid eutrophication of tail water flowing back into the breeding pond, which interferes with the growth of farmed fish.
[0048] The above description is only a preferred specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be covered by the present invention.
Claims
1. A breeding tail water treatment system for recycling breeding tail water, characterized in that: Along the water flow direction, they include: A grid tank capable of separating floating objects; An ozone flotation component, the ozone component sequentially comprises a first flotation reaction unit, a second flotation reaction unit and an ozone generator, the ozone generator is arranged at the bottom of the first flotation reaction unit and is connected to the flotation reaction unit, the ozone generator can provide flotation gas containing ozone to the flotation reaction unit, float and separate total suspended particulate matter (TSS) and kill microorganisms; the second flotation reaction unit can remove excess ozone in the water body by flotation; A nitrogen and phosphorus removal pool, comprising a relatively tortuous channel, wherein submerged plants for absorbing inorganic nitrogen and phosphorus are arranged in the channel.
2. A system for treating aquaculture tail water according to claim 1, characterized in that: The grid pool comprises a pool body and a plurality of grid nets arranged in sequence, wherein the plurality of grid nets are detachably connected to the pool body, and different grid nets can separate solid floating objects of different sizes.
3. The aquaculture tailwater treatment system according to claim 1, characterized in that: The first flotation reaction unit includes a first flotation tank and a first microporous aeration plate. The first microporous aeration plate is arranged at the bottom of the first flotation tank and immersed in the water body. The ozone generator is connected to the first microporous aeration plate through a pipeline. The first microporous aeration plate can spray ozone gas into the water body.
4. A system for treating aquaculture tail water according to claim 3, characterized in that: The second flotation reaction unit includes a second flotation tank and a second microporous aeration plate. The second microporous aeration plate is arranged at the bottom of the second flotation tank and immersed in the water body. The second microporous aeration plate is connected to a vacuum pump and can spray air into the water body.
5. A system for treating aquaculture tail water according to claim 4, characterized in that: The ozone flotation assembly further includes an ozone concentration detector, which is disposed in the second flotation tank.
6. The aquaculture tailwater treatment system according to claim 1, characterized in that: It also includes a sedimentation component arranged between the grid pool and the first flotation reaction unit, the sedimentation component includes a sedimentation tank and a pool bottom suction unit, the bottom of the sedimentation tank is funnel-shaped or wedge-shaped, and the pool bottom suction unit is connected to the bottom of the sedimentation tank for sucking sediment.
7. The aquaculture tailwater treatment system according to claim 1, characterized in that: The channel is a hairpin-shaped channel having a plurality of right-angle turning portions.
8. The aquaculture tailwater treatment system according to claim 1, characterized in that: The interior of the channel is filled with a porous activated carbon base material.