Aquaculture tail water bacteria-algae combined treatment equipment

Abstract

The utility model discloses a kind of breeding tail water bacteria-algae combination processing equipment, it is related to aquaculture tail water processing technical field, including shell and three parallelly installed single-box tail water equipment in the inside of shell, and by the order of tail water flowing through different single-box tail water equipment, three single-box tail water equipment are divided into first-stage tail water equipment, secondary tail water equipment and tertiary tail water equipment, single-box tail water equipment includes frame, biochemical pool, upper curtain frame structure, lower curtain frame structure and water supply structure.The breeding tail water bacteria-algae combination processing equipment is processed by setting three single-box tail water equipment connected together to tail water classification, and different bacteria-algae symbiotic system is constructed in different single-box tail water equipment respectively to handle different pollutants in tail water, it is helpful to avoid the destruction of bacteria-algae symbiotic system caused by resource competition in the case of guaranteeing tail water processing quality and efficiency, and the maintenance difficulty of bacteria-algae symbiotic system is reduced, greatly enhance the practicality of equipment and the service life of bacteria-algae symbiotic system.

Description

Technical Field

[0001] This utility model relates to the field of aquaculture wastewater treatment technology, and more specifically, to an equipment for combined treatment of aquaculture wastewater with bacteria and algae. Background Technology

[0002] Aquaculture wastewater refers to the water discharged during aquaculture processes (such as water exchange, pond cleaning, and harvesting). This water usually contains excessive nutrients, organic pollutants, suspended solids, and possible pathogens and drug residues. Direct discharge of this wastewater will seriously pollute surrounding rivers, lakes, and oceans, leading to eutrophication, red tides, and damage to the ecological environment.

[0003] Chinese utility model patent CN120441104A discloses a livestock and poultry breeding wastewater treatment system based on dynamic algae biofilm technology. The system comprises a biological treatment membrane bed unit, a water tank, a biological filter layer, and a water-air pumping system. The biological treatment membrane bed unit is fixed to the top of the water tank and contains multiple suspended biofilm beds. The water tank is divided into three functional areas—an aeration tank, a sedimentation tank, and a conversion tank—by walls, storing the aquaculture wastewater to be treated. This technical solution employs dynamic algae biofilm technology, treating aquaculture wastewater through the biological treatment membrane bed unit, water tank, biological filter layer, and water-air pumping system. Combined with microalgae seed liquid and microbial bags, a dynamic biofilm is formed, achieving wastewater purification and microalgae culture medium production, improving wastewater purification efficiency, and realizing automatic continuous production and resource utilization of microalgae. However, the above-mentioned technical solutions are not convenient for cultivating different bacteria and algae separately. Different algae and bacteria will compete for nutrients, light and growth space, and may even inhibit the growth of other algae or bacteria, thereby affecting the quality and efficiency of effluent treatment and reducing the practicality of the equipment. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a combined algae and bacteria treatment equipment for aquaculture wastewater, which can achieve graded treatment of wastewater by separately cultivating different algae and corresponding bacteria. This avoids damage to the algae-bacteria symbiotic system due to resource competition while maintaining the quality and efficiency of wastewater treatment. In addition, the simplified equipment structure can utilize natural light, effectively reducing the demand for electro-optical conversion and energy consumption, which helps to reduce operating costs and maintenance difficulty.

[0005] To achieve the above objectives, this utility model provides a combined treatment equipment for aquaculture wastewater containing bacteria and algae, including an outer shell and three single-box wastewater devices installed side by side inside the outer shell. The three single-box wastewater devices are sequentially divided into a primary wastewater device, a secondary wastewater device, and a tertiary wastewater device according to the order in which the wastewater flows. The single-tank effluent equipment includes a frame installed inside the outer shell, a biological tank installed on the bottom wall of the outer shell and located within the frame, an upper curtain frame structure and a lower curtain frame structure installed on the frame and located directly above the biological tank, and a water supply structure installed on one side of the biological tank along its length, wherein the upper curtain frame structure is located above the lower curtain frame structure; the biological tanks of the three single-tank effluent equipment are suitable for accommodating biological filter media; The upper curtain frame structure includes several first hanging rods horizontally installed on the frame and a first spray unit horizontally installed on the frame; The lower curtain frame structure includes several second hanging rods horizontally installed on the frame and a second spray unit horizontally installed on the frame; Each of the upper and lower corresponding first and second hanging rods is equipped with a microalgae carrier for microalgae cultivation, and the microalgae carriers in the three single-box tailwater equipment respectively cultivate different algae; The input end of the water supply structure is connected to the biological treatment tank, and the output end of the water supply structure is connected to the first spray unit in the upper curtain structure. At the same time, the output end of the water supply structure in the primary tailwater equipment is also connected to the second spray unit in the secondary tailwater equipment, and the output end of the water supply structure in the secondary tailwater equipment is also connected to the second spray unit in the tertiary tailwater equipment.

[0006] Furthermore, the biochemical tank includes a water tank body installed on the bottom wall of the outer shell and located within the frame, and a grid installed at the top opening of the water tank body. A filter plate is vertically installed inside the water tank body, and the filter plate is located on the side of the water tank body closer to the water supply structure.

[0007] Furthermore, the water supply structure includes a spray pump and a lift pump. Both the spray pump and the lift pump are installed on one side of the length direction of the water tank body. The input ends of both the spray pump and the lift pump are equipped with filter components that communicate with the water tank body. The output end of the spray pump is connected to the first spray unit in the upper curtain frame structure, and the output end of the lift pump is connected to the second spray unit in the tailwater equipment that is one level lower than the current tailwater equipment.

[0008] Furthermore, the frame is fixedly installed on the outside of the water tank body, the lower skeleton is fixedly installed on the top of the lower skeleton and the support skeleton is corresponding to the position of the upper curtain frame structure and the lower curtain frame structure, and the upper skeleton is installed on the top of the support skeleton and located directly above the upper curtain frame structure.

[0009] Furthermore, the microalgae carrier is a curtain made of coarse cotton cloth, and the first hanging rod and the second hanging rod are adapted to restrict the movement of the upper and lower ends of the microalgae carrier.

[0010] Furthermore, the first spray unit includes two first spray pipes horizontally mounted on the support frame and a plurality of first atomizing nozzles evenly distributed on the first spray pipes. The first spray pipes are parallel to the first hanging rod, and the position of the first spray pipes is higher than the first hanging rod. The second spray unit includes two second spray pipes horizontally mounted on the support frame and several second atomizing nozzles evenly distributed on the second spray pipes. The second spray pipes are parallel to the second hanging rod, and the position of the second spray pipes is lower than the second hanging rod.

[0011] Furthermore, two first baffles corresponding to the positions of the first spray unit are installed on the support frame, and the two first baffles are located on opposite sides of the two first spray pipes in the first spray unit. The support frame is equipped with two second baffles corresponding to the positions of the second spray unit, and the two second baffles are located on opposite sides of the two second spray pipes in the second spray unit.

[0012] Furthermore, the outer casing covers the outside of the three single-tank tailwater devices, and ventilation louvers are provided on both sides of the length direction of the outer casing.

[0013] Furthermore, the outer casing is provided with transparent viewing windows corresponding to the top and both sides of the length direction of each single-tank tailwater device.

[0014] Furthermore, the upper surface of the upper frame is equipped with four hooks, and the hooks pass through the outer shell.

[0015] Compared with the prior art, this utility model has the following advantages and effects: 1. The aquaculture wastewater treatment equipment of this utility model uses three interconnected single-tank wastewater devices for graded treatment. Different bacterial-algae symbiotic systems are constructed in different single-tank wastewater devices to treat different pollutants in the wastewater. This helps to avoid damage to the bacterial-algae symbiotic system due to resource competition while ensuring the quality and efficiency of wastewater treatment. This setup also allows for separate inoculation, management, replenishment, and cleaning of bacterial strains or microalgae, effectively reducing the maintenance difficulty of the bacterial-algae symbiotic system and greatly enhancing the practicality of the equipment and the service life of the bacterial-algae symbiotic system.

[0016] 2. The aquaculture wastewater bacteria and algae combined treatment equipment of this utility model has a transparent window and ventilation louvers on the outer shell, which helps to maintain the light requirements of algae by utilizing natural light, and realizes the use of certain gases by bacteria and algae by interacting with external gases, which greatly reduces the power consumption generated by light and gas supply and lowers the cost of use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the aquaculture wastewater bacteria and algae combined treatment equipment in this embodiment of the present invention. Figure 2 This is a schematic diagram of the structure of the aquaculture wastewater bacteria and algae combined treatment equipment after removing the outer shell in an embodiment of this utility model; Figure 3 This is a schematic diagram of the structure of a single-box tailwater device of the aquaculture tailwater combined bacteria and algae treatment equipment in this embodiment of the present invention; Figure 4 This is a three-dimensional structural diagram of the biochemical tank of the aquaculture wastewater bacteria and algae combined treatment equipment in this embodiment of the present invention. Figure 5 This is a schematic cross-sectional view of the biochemical tank of the aquaculture wastewater bacteria and algae combined treatment equipment in this embodiment of the present invention. Figure 6 This is a schematic diagram of the upper curtain frame structure of the aquaculture wastewater bacteria and algae combined treatment equipment in this embodiment of the present invention. Figure 7 This is a schematic diagram of the lower curtain frame structure of the aquaculture wastewater bacteria and algae combined treatment equipment in this embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures: 1-Single-box tailwater equipment; 11-Frame; 111-Lower skeleton; 112-Supporting skeleton; 113-Upper skeleton; 12-Biological tank; 121-Tank body; 1211-Filter plate; 122-Grid; 13-Upper curtain frame structure; 131-First hanging rod; 132-First spray unit; 133-First water baffle; 14-Lower curtain frame structure; 141-Second hanging rod; 142-Second spray unit; 143-Second baffle plate; 15-Water supply structure; 151-Spray pump; 152-Boost pump; 153-Filter components; 2-Outer shell; 21-Ventilation louvers; 3-Hook. Detailed Implementation

[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can also refer to the internal connection of two components; and they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] Please see Figure 1-7 As shown, this utility model embodiment provides a combined treatment equipment for aquaculture wastewater with bacteria and algae, including a shell 2 and three single-box wastewater devices 1 installed side by side inside the shell 2. The three single-box wastewater devices 1 are divided into a primary wastewater device, a secondary wastewater device and a tertiary wastewater device in the order in which the wastewater flows.

[0022] The single-tank effluent equipment 1 includes a frame 11, a biological tank 12, an upper curtain frame structure 13, a lower curtain frame structure 14, and a water supply structure 15. The frame 11 is installed inside the outer shell 2. The biological tank 12 is installed on the bottom wall of the outer shell 2 and is located inside the frame 11. The upper curtain frame structure 13 and the lower curtain frame structure 14 are installed on the frame 11 and are located directly above the biological tank 12. The water supply structure 15 is installed on one side of the biological tank 12 along its length. The upper curtain frame structure 13 is located above the lower curtain frame structure 14. The biological tanks 12 of the three single-tank effluent equipment 1 are suitable for accommodating biological filter media.

[0023] As a preferred option of the above scheme, different biological filter media can be placed in the biochemical tanks 12 of the three single-tank effluent equipment 1 to meet the cultivation needs of different bacterial groups, so as to treat different pollutants in the effluent according to the order of effluent flow, realize the graded treatment of effluent, and avoid the destruction of the bacterial-algae symbiotic system caused by resource competition between bacteria and algae.

[0024] The upper curtain frame structure 13 includes several first hanging rods 131 horizontally installed on the frame 11 and a first spray unit 132 horizontally installed on the frame 11; the lower curtain frame structure 14 includes several second hanging rods 141 horizontally installed on the frame 11 and a second spray unit 142 horizontally installed on the frame 11; a microalgae carrier for microalgae cultivation is installed between each corresponding upper and lower first hanging rod 131 and second hanging rod 141, and the microalgae carriers in the three single-box tailwater equipment 1 cultivate different algae respectively.

[0025] The input end of the water supply structure 15 is connected to the biological treatment tank 12, and the output end of the water supply structure 15 is connected to the first spray unit 132 in the upper curtain structure 13. At the same time, the output end of the water supply structure 15 in the primary tailwater equipment is also connected to the second spray unit 142 in the secondary tailwater equipment, and the output end of the water supply structure 15 in the secondary tailwater equipment is also connected to the second spray unit 142 in the tertiary tailwater equipment.

[0026] As a further description of the above scheme, after sedimentation and filtration, the aquaculture wastewater enters the second spray unit 142 of the primary wastewater treatment equipment through an external pumping device. This sprays the wastewater onto the biological filter media of the biological tank 12, thereby utilizing the microorganisms and flora in the biofilm attached to the surface of the biological filter media to remove pollutants. In addition, the water supply structure 15 can draw the liquid in the biological tank 12 to the first spray unit 132, so that the water-soluble inorganic salts and carbon dioxide can fully contact the microalgae carrier, thereby utilizing the algae in the microalgae carrier to absorb the dissolved inorganic salts and carbon dioxide in the water to achieve water purification. Furthermore, the liquid in the biological tank 12 of the primary wastewater treatment equipment will also flow to the next stage wastewater treatment equipment under the action of the water supply structure 15, so that the aquaculture wastewater is treated sequentially through the primary wastewater treatment equipment, the secondary wastewater treatment equipment, and the tertiary wastewater treatment equipment.

[0027] Please see Figure 1-5 As shown, the biological tank 12 includes a tank body 121, a grid 122, and a filter plate 1211. The tank body 121 is installed on the bottom wall of the outer shell 2 and located within the frame 11. The grid 122 is installed at the top opening of the tank body 121. The filter plate 1211 is installed vertically inside the tank body 121 and is located on the side of the tank body 121 closest to the water supply structure 15. The tank body 121 is used to install the biological filter media and hold the liquid. The filter plate 1211 can prevent impurities in the biological filter media and liquid from flowing to the water supply structure 15. In addition, the grid 122 can prevent the biological filter media from being exposed to sunlight without affecting the downward flow of liquid and air circulation, thereby maintaining a good growth environment for the microbial community in the biological filter media.

[0028] As a preferred embodiment of the above scheme, the water tank body 121 is equipped with an aeration device. The aeration device is suitable for providing oxygen when there is no light, providing the necessary oxygen for the respiration of aerobic bacteria and algae, and using the air flotation effect to make the air bubbles with pollutants attached float to the surface of the water, thereby increasing the contact efficiency between pollutants and the biofilm on the biological filter media and improving the pollution removal efficiency. In addition, some pollutant particles will form scum on the water surface after air flotation, and the scum is easy to remove.

[0029] Please see Figure 1-5As shown, the water supply structure 15 includes a spray pump 151 and a lift pump 152. Both the spray pump 151 and the lift pump 152 are installed on one side of the length direction of the water tank body 121. The input ends of the spray pump 151 and the lift pump 152 are equipped with filter components 153 that communicate with the water tank body 121. The output end of the spray pump 151 is connected to the first spray unit 132 in the upper curtain frame structure 13, and the output end of the lift pump 152 is connected to the second spray unit 142 in the tailwater device that is one level lower than the current tailwater device. The spray pump 151 is adapted to transport the liquid in the water tank body 121 to the first spray unit 132 so that the liquid atomized by the first spray unit 132 comes into contact with the algae in the microalgae carrier. The lift pump 152 is adapted to transport the liquid in the water tank body 121 to the next level of tailwater device and let the liquid flow into the second spray unit 142 in the next level of tailwater device, so that the liquid comes into contact with the bacteria in the biological filter media.

[0030] As a preferred embodiment of the above solution, the filter element 153 adopts a Y-type filter to further intercept solid particulate impurities carried in the liquid. When impurities accumulate to a certain extent, the filter can be opened for screen cleaning to restore its filtration capacity and avoid excessive pressure drop in the pipeline.

[0031] Please see Figure 1-3 As shown, the frame 11 includes a lower skeleton 111, a support skeleton 112, and an upper skeleton 113. The lower skeleton 111 is fixedly installed on the outside of the water tank body 121. The support skeleton 112 is fixedly installed on the top of the lower skeleton 111 and corresponds to the positions of the upper curtain frame structure 13 and the lower curtain frame structure 14. The upper skeleton 113 is installed on the top of the support skeleton 112 and is located directly above the upper curtain frame structure 13. This allows the skeleton structure in the frame 11 to provide support for the equipment, thereby maintaining overall stability and geometric invariance.

[0032] Specifically, the microalgae carrier is a curtain made of coarse cotton cloth, and the first hanging rod 131 and the second hanging rod 141 are used to restrict the movement of the upper and lower ends of the microalgae carrier.

[0033] As a further description of the above scheme, the curtain made of coarse cotton cloth can provide microscopic pores and capillary channels for microalgae and patented bacterial communities to attach and grow easily by utilizing the rough surface and good hydrophilicity of its natural fibers. This is conducive to the formation of bacterial film and facilitates the continuous exchange of nutrients and dissolved oxygen.

[0034] Please see Figure 1-7 As shown, the first spray unit 132 includes two first spray pipes horizontally mounted on the support frame 112 and several first atomizing nozzles evenly distributed on the first spray pipes. The first spray pipes are parallel to the first hanging rod 131, and the position of the first spray pipes is higher than the first hanging rod 131. The second spray unit 142 includes two second spray pipes horizontally mounted on the support frame 112 and several second atomizing nozzles evenly distributed on the second spray pipes. The second spray pipes are parallel to the second hanging rod 141, and the position of the second spray pipes is lower than the second hanging rod 141.

[0035] As a further description of the above solution, the first hanging rod 131 and the second hanging rod 141 work together to install the microalgae carrier. The first hanging rod 131 and the second hanging rod 141 respectively restrict the movement of the upper and lower ends of the microalgae carrier, thereby maintaining the unfolding effect of the microalgae carrier and effectively reducing the swaying of the microalgae carrier caused by wind, avoiding damage to the algae from bumps and knocks. Please see Figure 1-7 As shown, two first baffle plates 133 corresponding to the positions of the first spray unit 132 are installed on the support frame 112, and the two first baffle plates 133 are respectively located on opposite sides of the two first spray pipes in the first spray unit 132; the first baffle plates 133 are conveniently used to limit the diffusion range of the atomized liquid generated by the first spray unit 132, and effectively prevent the atomized liquid from moving away from the microalgae carrier.

[0036] Two second baffles 143 corresponding to the positions of the second spray unit 142 are installed on the support frame 112, and the two second baffles 143 are located on opposite sides of the two second spray pipes in the second spray unit 142. The second baffles 143 can limit the diffusion range of the atomized liquid generated by the second spray unit 142, effectively preventing the atomized liquid from moving away from the biological filter media.

[0037] Please see Figure 1 As shown, the outer shell 2 covers the outside of the three single-box tailwater equipment 1, and ventilation louvers 21 are provided on both sides of the length direction of the outer shell 2; to facilitate the exchange of air inside and outside the outer shell 2 by using the ventilation louvers 21.

[0038] Please see Figure 1 As shown, the outer shell 2 is provided with transparent windows corresponding to the top and both sides of the length direction of each single-tank tailwater device 1; the transparent windows allow sunlight to shine on the microalgae carrier, so as to meet the needs of bacterial and algal photosynthesis.

[0039] Please see Figure 1-3 As shown, four hooks 3 are installed on the upper surface of the upper frame 113, and the hooks 3 pass through the outer shell 2; the hooks 3 are suitable for completing the hoisting work of the equipment and meet the needs of equipment installation, maintenance and dismantling.

[0040] The working process of the above-mentioned aquaculture wastewater combined bacteria and algae treatment equipment is as follows: When using this aquaculture wastewater treatment equipment that combines bacteria and algae, the first step is to use external pumping equipment to transport the aquaculture wastewater, after sedimentation and filtration, to the second spray unit 142 of the primary wastewater treatment system. The second spray unit 142 then sprays the wastewater onto the biological filter media in the biological tank 12, where microorganisms and flora attached to the biofilm remove pollutants. Next, the spray pump 151 in the primary wastewater treatment system transports the liquid from the biological tank 12 to the first spray unit 132, where it sprays the liquid onto the microalgae carrier. The algae on the microalgae carrier absorb dissolved inorganic salts and carbon dioxide from the water, thus achieving primary wastewater treatment through the symbiotic relationship between the microalgae and flora in the primary wastewater treatment system. In addition, the lift pump 152 in the primary effluent equipment will transport the liquid in the biological treatment tank 12 to the second spray unit 142 in the secondary effluent equipment, so as to achieve secondary treatment of the effluent by utilizing the symbiotic microalgae community in the secondary effluent equipment; the lift pump 152 in the secondary effluent equipment will then transport the liquid in the biological treatment tank 12 to the second spray unit 142 in the tertiary effluent equipment, so as to achieve tertiary treatment of the effluent by utilizing the symbiotic microalgae community in the tertiary effluent equipment, thereby maintaining a good water purification effect.

[0041] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this invention.

Claims

1. An equipment for combined treatment of bacteria and algae in aquaculture wastewater, characterized in that, It includes an outer shell (2) and three single-box tailwater devices (1) installed side by side inside the outer shell (2). The three single-box tailwater devices (1) are divided into a first-stage tailwater device, a second-stage tailwater device and a third-stage tailwater device in the order in which the tailwater flows. The single-tank tailwater equipment (1) includes a frame (11) installed inside the outer shell (2), a biochemical tank (12) installed on the bottom wall of the outer shell (2) and located inside the frame (11), an upper curtain structure (13) and a lower curtain structure (14) installed on the frame (11) and located directly above the biochemical tank (12), and a water supply structure (15) installed on one side of the biochemical tank (12) along its length. The upper curtain structure (13) is located above the lower curtain structure (14). The biochemical tanks (12) of the three single-tank tailwater equipment (1) are suitable for accommodating biological filter media. The upper curtain frame structure (13) includes several first hanging rods (131) horizontally installed on the frame (11) and a first spray unit (132) horizontally installed on the frame (11). The lower curtain frame structure (14) includes several second hanging rods (141) horizontally installed on the frame (11) and a second spray unit (142) horizontally installed on the frame (11). Each of the upper and lower corresponding first hanging rod (131) and second hanging rod (141) is equipped with a microalgae carrier for microalgae cultivation, and the microalgae carriers in the three single-box tailwater equipment (1) cultivate different algae respectively; The input end of the water supply structure (15) is connected to the biological treatment tank (12), and the output end of the water supply structure (15) is connected to the first spray unit (132) in the upper curtain structure (13). At the same time, the output end of the water supply structure (15) in the primary tailwater equipment is also connected to the second spray unit (142) in the secondary tailwater equipment, and the output end of the water supply structure (15) in the secondary tailwater equipment is also connected to the second spray unit (142) in the tertiary tailwater equipment.

2. The aquaculture wastewater combined bacteria and algae treatment equipment according to claim 1, characterized in that, The biochemical tank (12) includes a water tank body (121) installed on the inner bottom wall of the outer shell (2) and located in the frame (11) and a grid (122) installed on the top opening of the water tank body (121). A filter plate (1211) is vertically installed inside the water tank body (121) and the filter plate (1211) is located on the side of the water tank body (121) close to the water supply structure (15).

3. The aquaculture wastewater combined bacteria and algae treatment equipment according to claim 2, characterized in that, The water supply structure (15) includes a spray pump (151) and a lift pump (152). Both the spray pump (151) and the lift pump (152) are installed on one side of the length direction of the water tank body (121). The input ends of the spray pump (151) and the lift pump (152) are equipped with filter components (153) that communicate with the water tank body (121). The output end of the spray pump (151) is connected to the first spray unit (132) in the upper curtain frame structure (13). The output end of the lift pump (152) is connected to the second spray unit (142) in the tailwater equipment that is one level lower than the current tailwater equipment.

4. The aquaculture wastewater combined bacteria and algae treatment equipment according to claim 2, characterized in that, The frame (11) is fixedly installed on the outside of the water tank body (121) as a lower frame (111), fixedly installed on the top of the lower frame (111) and corresponding to the positions of the upper curtain frame structure (13) and the lower curtain frame structure (14), and installed on the top of the support frame (112) and located directly above the upper curtain frame structure (13).

5. The aquaculture wastewater combined bacteria and algae treatment equipment according to claim 1, characterized in that, The microalgae carrier is a curtain made of coarse cotton cloth, and the first hanging rod (131) and the second hanging rod (141) are adapted to restrict the movement of the upper and lower ends of the microalgae carrier.

6. The aquaculture wastewater combined bacteria and algae treatment equipment according to claim 4, characterized in that, The first spray unit (132) includes two first spray pipes horizontally installed on the support frame (112) and a number of first atomizing nozzles evenly distributed on the first spray pipes. The first spray pipes are parallel to the first hanging rod (131), and the position of the first spray pipes is higher than the first hanging rod (131). The second spray unit (142) includes two second spray pipes horizontally mounted on the support frame (112) and a number of second atomizing nozzles evenly distributed on the second spray pipes. The second spray pipes are parallel to the second hanging rod (141), and the position of the second spray pipes is lower than the second hanging rod (141).

7. The aquaculture wastewater combined bacteria and algae treatment equipment according to claim 6, characterized in that, The support frame (112) is equipped with two first baffles (133) corresponding to the positions of the first spray unit (132), and the two first baffles (133) are located on opposite sides of the two first spray pipes in the first spray unit (132); The support frame (112) is equipped with two second baffles (143) corresponding to the positions of the second spray unit (142), and the two second baffles (143) are located on opposite sides of the two second spray pipes in the second spray unit (142).

8. The aquaculture wastewater combined bacteria and algae treatment equipment according to claim 1, characterized in that, The outer shell (2) covers the outside of the three single-box tailwater devices (1), and ventilation louvers (21) are provided on both sides of the length direction of the outer shell (2).

9. The aquaculture wastewater combined bacteria and algae treatment equipment according to claim 8, characterized in that, The outer shell (2) is provided with transparent windows corresponding to the top and both sides of the length direction of each single-box tailwater device (1).

10. The aquaculture wastewater combined bacteria and algae treatment equipment according to claim 4, characterized in that, The upper surface of the upper frame (113) is equipped with four hooks (3), and the hooks (3) pass through the outer shell (2).

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