Device and method for treating breeding tail water by combining bacteria and algae

Abstract

The invention belongs to the technical field of tail water treatment, and discloses a device and a method for treating breeding tail water through combination of bacteria and algae, the device comprises a treatment box, and further comprises a bacteria and algae storage assembly, the bacteria and algae storage assembly is mounted at the top end of the treatment box, and a motor for driving the bacteria and algae storage assembly is arranged at the top of the treatment box; the mixing assembly is fixedly arranged at the bottom of the bacteria and algae storage assembly; the material injection assembly is mounted at the bottom of the bacteria and algae storage assembly; and the swing assembly is fixedly arranged at the bottom of the material injection assembly. Tail water at the upper end of the treatment box is sucked in through rotation of the circulating pipe and is sprayed out from the lower end of the treatment box through the S-shaped guide pipe, so that water in the treatment box circularly flows up and down, and the phenomenon that the tail water in the treatment box has a dead zone or precipitates to affect the overall treatment effect of the tail water is avoided; meanwhile, viscous substances in the tail water can be prevented from blocking the stirring paddle and the aeration head.

Description

Technical Field

[0001] The present invention belongs to the technical field of tail water treatment, and specifically relates to a device and method for treating aquaculture tail water by combining bacteria and algae. Background Art

[0002] The treatment of aquaculture tail water by combining bacteria and algae is a technology that utilizes the synergistic effect of microorganisms (bacteria) and algae to purify aquaculture tail water. This technology combines the decomposition ability of microorganisms and the photosynthesis characteristics of algae, and can effectively remove pollutants such as organic matter, nitrogen, and phosphorus in water, while improving water quality. It is mainly applicable to the treatment of aquaculture tail water of fish, shrimp, shellfish, etc.; Heterotrophic bacteria (such as Bacillus subtilis, Pseudomonas) can decompose organic matter in tail water (such as feed residues, excreta), convert it into carbon dioxide, water and inorganic salts; reduce chemical oxygen demand (COD) and biochemical oxygen demand (BOD), and reduce water pollution; Nitrifying bacteria: convert ammonia nitrogen into nitrite, and denitrifying bacteria: convert nitrite into harmless nitrogen gas, reducing the nitrogen content in water.

[0003] During the process of treating aquaculture tail water by using the bacteria-algae combination technology, the aquaculture tail water usually needs to circulate and flow, which can make the bacteria and algae fully contact with the pollutants in the tail water and improve the treatment efficiency. Existing tail water treatment usually uses mechanical stirring or aeration devices to make the tail water circulate and flow. However, the distribution and height of the stirring paddles are unreasonable or the power is insufficient, resulting in uneven water mixing, and some areas may become "dead zones" due to insufficient stirring, affecting the overall treatment effect. If the layout of the aeration heads is too concentrated or sparse, it may cause too high or too low dissolved oxygen concentration in some areas. Uneven aeration will affect the distribution and metabolic activities of bacteria and algae. At the same time, the tail water may contain a large amount of viscous substances, which will adhere to the surface of bacteria and algae, increase their density and hinder their suspension. The viscous substances will cause blockage of the stirring paddles and aeration heads, further affecting the mixing effect. Therefore, a device and method for treating aquaculture tail water by combining bacteria and algae are proposed. Summary of the Invention

[0004] To solve the problems raised in the above background art, the present invention provides a device and method for treating aquaculture tail water by combining bacteria and algae, which solves the problem that it is difficult to mix bacteria and algae with tail water evenly by existing mechanical stirring or aeration devices.

[0005] To achieve the above object, the present invention provides the following technical solutions: A device and method for treating aquaculture tail water by combining bacteria and algae, including a treatment tank, and further including:

[0006] A bacteria-algae storage component, the bacteria-algae storage component is installed at the top of the treatment tank, and a motor for driving the bacteria-algae storage component is arranged at the top of the treatment tank;

[0007] A mixing component, the mixing component is fixedly installed at the bottom of the bacteria-algae storage component;

[0008] A feeding component, which is installed at the bottom of the algal-bacterial storage component;

[0009] A swing component, which is fixedly installed at the bottom of the feeding component;

[0010] Among them, the mixing component includes a circulation pipe fixedly installed at the bottom of the algal-bacterial storage component. An S-shaped guiding pipe is fixedly installed at the bottom of the circulation pipe. The bottom of the circulation pipe is communicated with the S-shaped guiding pipe. Spray heads are fixedly installed at both ends of the S-shaped guiding pipe;

[0011] The spray heads gradually become rectangular from the connection end with the S-shaped guiding pipe towards the end close to the swing component;

[0012] A water inlet through groove is opened at the upper end of the circulation pipe, and an auger is fixedly installed inside the circulation pipe;

[0013] The swing component includes an arc-shaped plate fixedly installed at the bottom of the second protective cover in the feeding component. A fixing rod is movably sleeved on the arc-shaped plate;

[0014] The circulation pipe rotates following the algal-bacterial storage component. The tail water in the treatment tank is injected into the S-shaped guiding pipe through the water inlet through groove under the action of the auger, and is sprayed out through the two spray heads. Under the action of the water flow, the fixing rod is driven to swing, so that the algal-bacterial is sprayed out through the feeding component and mixed with the tail water.

[0015] Preferably, the mixing component further includes a drain pipe fixedly installed at the bottom of the S-shaped guiding pipe. A guiding pipe is fixedly installed inside the drain pipe. A rectangular through groove is opened on the outer side of the guiding pipe. A shunt box is fixedly installed at the bottom of the guiding pipe. Spray holes are opened on the outer side of the shunt box.

[0016] Preferably, a plugging column is movably sleeved on the outer side of the guiding pipe, and the plugging column moves inside the drain pipe;

[0017] The plugging column is located at the upper end of the guiding pipe under the action of a return spring to block the rectangular through groove.

[0018] Preferably, the algal-bacterial storage component includes a storage pipe movably installed at the top end of the treatment tank. A driving wheel is fixedly installed at the upper end of the storage pipe. A motor at the top of the treatment tank is connected with the driving wheel through a belt;

[0019] A feeding pipe is connected to the outer side of the storage pipe;

[0020] The top of the circulation pipe is fixedly connected with the bottom of the storage pipe.

[0021] Preferably, the injection component includes a first protective cover fixedly installed at the bottom of the injection pipe. A second protective cover is fixedly installed at the bottom of the first protective cover. A half gear is movably installed inside the second protective cover.

[0022] A cam is fixedly installed at the top of the half gear. A first circular plate is fixedly installed at the top of the cam. A second circular plate is fixedly installed inside the first protective cover. A first through hole and a second through hole are respectively formed on the first circular plate and the second circular plate.

[0023] The second circular plate divides the inside of the first protective cover into two cavities.

[0024] Preferably, the swinging component further includes an arc-shaped groove formed on the second protective cover. The top of one end of the arc-shaped plate is provided with an arc-shaped rack through a connecting rod, and the connecting rod is movably located inside the arc-shaped groove.

[0025] Preferably, the arc-shaped rack meshes with the half gear. The cam is located in the lower cavity inside the first protective cover. A rubber protective cover for blocking the arc-shaped groove is fixedly installed at the bottom of the second protective cover.

[0026] Preferably, a water spraying pipe is fixedly installed outside the first protective cover. A limiting ring and a support frame are respectively fixedly installed at both ends inside the water spraying pipe. The support frame is connected with a valve plate through a support spring, and the valve plate abuts against the limiting ring under the action of the support spring.

[0027] Guide rods for guiding the valve plate are annularly arranged on the inner wall of the water spraying pipe.

[0028] The present invention also provides a method for treating aquaculture tail water by combining bacteria and algae, including the following steps:

[0029] S1. Inject the preliminarily filtered aquaculture tail water into the inside of the treatment tank, and then inject the microbial bacteria into the inside of the bacteria-algae storage component. Drive the bacteria-algae storage component, the mixing component, the injection component and the swinging component to rotate through a motor.

[0030] S2. During the rotation of the circulation pipe, the tail water inside the treatment tank enters the circulation pipe through the water inlet through groove, and enters the inside of the S-shaped guide pipe under the action of the auger, and moves along the S-shaped guide pipe and sprays out from the nozzle. Since the nozzle gradually changes from a circular shape at one end to a rectangular shape, the sprayed tail water passes through the fixed rod, and the fixed rod swings around the arc-shaped plate as the axis under the action of the water flow.

[0031] S3. During the swinging process, the microorganisms in the algal-bacterial storage component and the feeding component are injected into the interior of the treatment tank. A low-pressure area will be formed around the water sprayed by the nozzle. Under the action of the low pressure, the microorganisms come into contact with the discharged tail water and are mixed with the tail water under the action of the swinging fixed rod. After the mixing of the microbial bacteria and the tail water is completed, the algae are injected into the algal-bacterial storage component, and by repeating the above steps, the algae and bacteria can be injected into the treatment tank to be fully mixed with the tail water;

[0032] S4. The tail water at the upper end of the treatment tank is sucked in by the rotation of the circulation pipe and sprayed out at the lower end of the treatment tank through the S-shaped guide pipe, so as to circulate the water inside the treatment tank up and down, avoiding the phenomenon of dead zones or precipitation of the tail water inside the treatment tank.

[0033] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0034] In the present invention, the tail water at the upper end of the treatment tank is sucked in by the rotation of the circulation pipe and sprayed out at the lower end of the treatment tank through the S-shaped guide pipe, so as to circulate the water inside the treatment tank up and down, avoiding the phenomenon of dead zones or precipitation of the tail water inside the treatment tank, which affects the overall treatment effect of the tail water. At the same time, it can prevent the viscous substances in the tail water from blocking the stirring paddle and the aeration head;

[0035] In the present invention, the nozzle sprays out the tail water to drive the fixed rod to swing. The connecting rod moves in the arc-shaped groove to drive the arc-shaped rack to move. Since the arc-shaped rack meshes with the half gear, the half gear, the cam and the first circular plate are driven to rotate. In the initial state, the first through hole coincides with the second through hole, and the algae at the upper end of the first protective cover enter the lower end of the first protective cover. When the first through hole and the second through hole are in a non-connected state by the rotation of the cam, at this time, the algae in the first protective cover are squeezed by the rotation of the cam. At this time, the pressure on the algae at the lower end of the first protective cover gradually increases, pushing the valve plate to disengage from the limit ring and compress the support spring. The algae can then enter the interior of the treatment tank through the water spraying pipe and be mixed with the discharged tail water under the action of the low-pressure area formed by the nozzle spraying out the tail water. Description of the Drawings

[0036] Figure 1 is a schematic diagram of the external structure of the present invention;

[0037] Figure 2 is a schematic diagram of the internal structure of the present invention;

[0038] Figure 3 is a schematic diagram of the external structure of the mixing component, the algal-bacterial storage component, the feeding component and the swinging component of the present invention;

[0039] Figure 4 is a schematic sectional structure diagram of the mixing component of the present invention;

[0040] Figure 5Schematic diagram of the cooperation structure of the injection component, the algal and bacterial storage component and the swing component of the present invention;

[0041] Figure 6 Schematic diagram of the disassembled structure of the injection component of the present invention;

[0042] Figure 7 For the present invention Figure 6 Enlarged structure diagram at position A in;

[0043] Figure 8 Partial sectional structure diagram of the mixing component of the present invention.

[0044] In the figure: 1. Treatment tank; 2. Algal and bacterial storage component; 21. Driving wheel; 22. Injection pipe; 23. Storage pipe; 25. Support rod; 211. Water spray pipe; 212. Limit ring; 213. Valve plate; 214. Support frame; 215. Support spring; 216. Guide rod; 4. Mixing component; 41. Circulation pipe; 42. S-shaped guide pipe; 43. Nozzle; 44. Water inlet through groove; 45. Auger; 411. Drain pipe; 412. Plugging column; 413. Rectangular through groove; 414. Return spring; 415. Guide pipe; 416. Shunt box; 417. Water spray hole; 5. Injection component; 51. First protective cover; 52. Second protective cover; 53. Cam; 54. Half gear; 55. First circular plate; 56. First through hole; 57. Second through hole; 58. Second circular plate; 6. Swing component; 61. Arc plate; 62. Fixed rod; 63. Arc rack; 64. Connecting rod; 65. Arc groove. Detailed implementation manners

[0045] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0046] As Figures 1 to 8 shown, the present invention provides a device and method for treating aquaculture tail water by combining algae and bacteria, including a treatment tank 1, and further including:

[0047] An algal and bacterial storage component 2, the algal and bacterial storage component 2 is installed at the top of the treatment tank 1, and a motor for driving the algal and bacterial storage component 2 is provided on the top of the treatment tank 1;

[0048] A mixing component 4, the mixing component 4 is fixedly installed at the bottom of the algal and bacterial storage component 2;

[0049] An injection component 5, the injection component 5 is installed at the bottom of the algal and bacterial storage component 2;

[0050] The swing assembly 6 is fixedly installed at the bottom of the feeding assembly 5;

[0051] Among them, the mixing assembly 4 includes a circulation pipe 41 fixedly installed at the bottom of the bacteria and algae storage assembly 2. The bottom of the circulation pipe 41 is fixedly installed with an S-shaped guide pipe 42. The bottom of the circulation pipe 41 is communicated with the S-shaped guide pipe 42. Nozzles 43 are fixedly installed at both ends of the S-shaped guide pipe 42;

[0052] The nozzle 43 gradually becomes rectangular from the connection end with the S-shaped guide pipe 42 to the end close to the swing assembly 6;

[0053] The upper end of the circulation pipe 41 is provided with a water inlet groove 44, and an auger 45 is fixedly installed inside the circulation pipe 41;

[0054] The swing assembly 6 includes an arc-shaped plate 61 fixedly installed at the bottom of the second protective cover 52 in the feeding assembly 5. A fixing rod 62 is movably sleeved on the arc-shaped plate 61;

[0055] The circulation pipe 41 rotates following the bacteria and algae storage assembly 2. The tail water in the treatment tank 1 is injected into the S-shaped guide pipe 42 through the water inlet groove 44 under the action of the auger 45, and is sprayed out through the two nozzles 43. Under the action of the water flow, the fixing rod 62 is driven to swing, so that the bacteria and algae are sprayed out through the feeding assembly 5 and mixed with the tail water.

[0056] Inject the preliminarily filtered aquaculture tail water into the interior of the treatment tank 1, and then inject the microbial bacteria into the interior of the bacteria and algae storage assembly 2. Drive the bacteria and algae storage assembly 2, the mixing assembly 4, the feeding assembly 5 and the swing assembly 6 to rotate through the motor. During the rotation of the circulation pipe 41, the tail water inside the treatment tank 1 enters the circulation pipe 41 through the water inlet groove 44, and enters the interior of the S-shaped guide pipe 42 under the action of the auger 45, and moves along the S-shaped guide pipe 42 and sprays out from the nozzle 43. Since the nozzle 43 gradually changes from circular to rectangular at one end, the sprayed tail water passes through the fixing rod 62. The fixing rod 62 swings around the arc-shaped plate 61 under the action of the water flow. At the same time, during the swinging process, the microbial bacteria inside the bacteria and algae storage assembly 2 and the feeding assembly 5 are injected into the interior of the treatment tank 1. A low-pressure area will be formed around the nozzle 43. Under the action of the low pressure, the microorganisms come into contact with the sprayed tail water, and are mixed with the tail water under the action of the swinging of the fixing rod 62. After the mixing of the microbial bacteria and the tail water is completed, then inject the algae into the bacteria and algae storage assembly 2 and repeat the above steps to inject the bacteria and algae into the treatment tank 1 and mix them fully with the tail water;

[0057] The tail water at the upper end of the treatment tank 1 is sucked in by the rotation of the circulation pipe 41 and sprayed out at the lower end of the treatment tank 1 through the S-shaped guide pipe 42, so as to circulate the water inside the treatment tank 1 up and down, avoid the phenomenon of dead zones or precipitation of the tail water inside the treatment tank 1, which affects the overall treatment effect of the tail water, and at the same time can avoid the viscous substances in the tail water from clogging the stirring paddle and the aeration head.

[0058] As Figure 4 shown in connection with 8 Figure 4, the mixing component 4 further includes a drain pipe 411 fixedly installed at the bottom of the S-shaped guide pipe 42. A guide pipe 415 is fixedly installed inside the drain pipe 411. A rectangular through groove 413 is formed on the outer side of the guide pipe 415. A flow splitting box 416 is fixedly installed at the bottom of the guide pipe 415. Spray holes 417 are formed on the outer side of the flow splitting box 416;

[0059] A plugging column 412 is movably sleeved on the outer side of the guide pipe 415, and the plugging column 412 is movable inside the drain pipe 411;

[0060] Under the action of a return spring 414, the plugging column 412 is located at the upper end of the guide pipe 415 to block the rectangular through groove 413.

[0061] The tail water in the treatment tank 1 is rotated through the circulation pipe 41 and enters the circulation pipe 41 through the water inlet through groove 44. Under the action of the auger 45, it enters the inside of the S-shaped guide pipe 42 and is sprayed out through the spray head 43. Since the spray head 43 gradually changes from a circular shape to a rectangular shape, the flow rate of the water sprayed out by the spray head 43 can be increased. When the water pressure in the S-shaped guide pipe 42 is too high, at this time, the plugging column 412 moves downward along the guide pipe 415 and the drain pipe 411 under the action of the water pressure in the S-shaped guide pipe 42 to compress the return spring 414. During the downward movement, the guide pipe 415 is kept in communication with the inside of the S-shaped guide pipe 42 through the rectangular through groove 413. The tail water in the S-shaped guide pipe 42 enters the flow splitting box 416 through the guide pipe 415 and is sprayed out through the spray holes 417, avoiding excessive water pressure sprayed out by the spray head 43 and reducing the contact time between the bacteria and algae and the tail water, thereby affecting the tail water treatment effect.

[0062] As Figures 3 to 7 shown in Figure 5, the bacteria and algae storage component 2 includes a storage pipe 23 movably installed at the top end of the treatment tank 1. A transmission wheel 21 is fixedly installed at the upper end of the storage pipe 23. The motor at the top of the treatment tank 1 is connected to the transmission wheel 21 through a belt;

[0063] A feeding pipe 22 is connected to the outer side of the storage pipe 23;

[0064] The top of the circulation pipe 41 is fixedly connected to the bottom of the storage pipe 23;

[0065] The feeding component 5 includes a first protective cover 51 fixedly installed at the bottom of the feeding pipe 22. A second protective cover 52 is fixedly installed at the bottom of the first protective cover 51. A half gear 54 is movably installed inside the second protective cover 52;

[0066] A cam 53 is fixedly installed at the top of the half gear 54. A first circular plate 55 is fixedly installed at the top of the cam 53. A second circular plate 58 is fixedly installed inside the first protective cover 51. First through holes 56 and second through holes 57 are respectively formed on the first circular plate 55 and the second circular plate 58;

[0067] The second circular plate 58 divides the interior of the first protective cover 51 into two cavities;

[0068] The swinging assembly 6 further includes an arc-shaped groove 65 formed in the second protective cover 52. The top of one end of the arc-shaped plate 61 is provided with an arc-shaped rack 63 through a connecting rod 64, and the connecting rod 64 is movably arranged in the arc-shaped groove 65;

[0069] The arc-shaped rack 63 meshes with the half gear 54. The cam 53 is located in the lower cavity inside the first protective cover 51. A rubber protective cover for blocking the arc-shaped groove 65 is fixedly installed at the bottom of the second protective cover 52;

[0070] A water spray pipe 211 is fixedly installed outside the first protective cover 51. At both ends inside the water spray pipe 211, a limiting ring 212 and a support frame 214 are respectively fixedly installed. The support frame 214 is connected with a valve plate 213 through a support spring 215, and the valve plate 213 abuts against the limiting ring 212 under the action of the support spring 215;

[0071] Guide rods 216 for guiding the valve plate 213 are arranged in an annular array on the inner wall of the water spray pipe 211.

[0072] The tail water sprayed out through the nozzle 43 drives the fixed rod 62 to swing. The connecting rod 64 moves in the arc-shaped groove 65 to drive the arc-shaped rack 63 to move. Since the arc-shaped rack 63 meshes with the half gear 54, the half gear 54, the cam 53 and the first circular plate 55 are driven to rotate. In the initial state, the first through hole 56 coincides with the second through hole 57, and the algae on the upper end of the first protective cover 51 enter the lower end of the first protective cover 51. By the rotation of the cam 53, the first through hole 56 and the second through hole 57 are in a non-connected state. At this time, the algae in the first protective cover 51 are extruded by the rotation of the cam 53. At this time, the pressure on the algae at the lower end of the first protective cover 51 gradually increases, which will push the valve plate 213 to separate from the contact with the limiting ring 212 and compress the support spring 215. The algae can then enter the interior of the treatment tank 1 through the water spray pipe 211 and be mixed with the sprayed tail water under the action of the low-pressure area formed by the tail water sprayed out by the nozzle 43;

[0073] At the same time, when the arc-shaped plate 61 swings in the reverse direction, it drives the half gear 54, the cam 53 and the first circular plate 55 to rotate in the reverse direction. At this time, the first through hole 56 coincides with the second through hole 57, and the algae on the upper end of the first protective cover 51 can enter the lower end of the first protective cover 51. By repeating this process, the algae can be evenly put into the interior of the treatment tank 1, reducing subsequent mixing.

[0074] The present invention also provides a method for treating aquaculture tail water by combining algae and bacteria, including the following steps:

[0075] S1, injecting the initially filtered aquaculture tail water into the processing box 1, and then injecting the microorganisms into the bacteria and algae storage component 2, and driving the bacteria and algae storage component 2, the mixing component 4, the injection component 5 and the swing component 6 to rotate by a motor;

[0076] S2. During the rotation of the circulation pipe 41, the tail water in the treatment box 1 enters the circulation pipe 41 through the water inlet groove 44, and enters the S-shaped guide pipe 42 under the action of the auger 45, and is sprayed out from the nozzle 43 along the movement of the S-shaped guide pipe 42. Since the nozzle 43 gradually changes from a circular shape at one end to a rectangular shape, the sprayed tail water passes through the fixed rod 62, and the fixed rod 62 swings with the arc plate 61 as the central axis under the action of the water flow;

[0077] S3, during the swinging process, the microorganisms in the bacteria and algae storage component 2 and the injection component 5 are injected into the processing box 1, and a low-pressure area is formed around the nozzle 43, and the microorganisms are in contact with the ejected tail water under the action of the low pressure, and are mixed with the tail water under the action of the swinging of the fixed rod 62. After the mixing treatment of the microorganisms and the tail water is completed, the algae are injected into the bacteria and algae storage component 2 to overlap the above steps, so that the bacteria and algae can be injected into the processing box 1 and fully mixed with the tail water;

[0078] S4. The tail water at the upper end of the treatment box 1 is sucked in by rotating the circulation pipe 41, and is sprayed out at the lower end of the treatment box 1 through the S-shaped guide pipe 42, so that the water inside the treatment box 1 circulates up and down to avoid dead zones or sedimentation of the tail water inside the treatment box 1.

[0079] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0080] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for treating aquaculture tail water by combining bacteria and algae, comprising a treatment box (1), characterized in that: Also includes: a bacteria and algae storage component (2), the bacteria and algae storage component (2) being mounted on the top of the processing box (1), and a motor for driving the bacteria and algae storage component (2) being provided on the top of the processing box (1); A mixing component (4), the mixing component (4) being fixedly mounted on the bottom of the bacteria and algae storage component (2); A material injection assembly (5), the material injection assembly (5) being installed at the bottom of the bacteria and algae storage assembly (2); A swing assembly (6), wherein the swing assembly (6) is fixedly mounted on the bottom of the injection assembly (5); The mixing assembly (4) comprises a circulation pipe (41) fixedly mounted on the bottom of the bacteria and algae storage assembly (2); an S-shaped guide pipe (42) is fixedly mounted on the bottom of the circulation pipe (41); the bottom of the circulation pipe (41) is connected to the S-shaped guide pipe (42); and nozzles (43) are fixedly mounted on both ends of the S-shaped guide pipe (42); The nozzle (43) gradually becomes rectangular from the end connected to the S-shaped guide tube (42) to the end close to the swing assembly (6); A water inlet groove (44) is provided at the upper end of the circulation pipe (41), and an auger (45) is fixedly installed inside the circulation pipe (41); The swing assembly (6) comprises an arc-shaped plate (61) fixedly mounted on the bottom of the second protective cover (52) in the injection assembly (5), and a fixing rod (62) is movably sleeved on the arc-shaped plate (61); The circulation pipe (41) rotates along with the bacteria and algae storage assembly (2), and the tail water in the treatment box (1) is injected into the S-shaped guide pipe (42) through the water inlet groove (44) under the action of the auger (45), and is sprayed out through the two nozzles (43). Under the action of the water flow, the fixed rod (62) is driven to swing, so that the bacteria and algae are sprayed out through the injection assembly (5) and mixed with the tail water.

2. The device for treating aquaculture tail water by combining bacteria and algae according to claim 1 is characterized in that: The mixing assembly (4) further comprises a drainage pipe (411) fixedly mounted on the bottom of the S-shaped guide pipe (42); a guide pipe (415) is fixedly mounted inside the drainage pipe (411); a rectangular through groove (413) is provided on the outside of the guide pipe (415); a diversion box (416) is fixedly mounted on the bottom of the guide pipe (415); and a water spray hole (417) is provided on the outside of the diversion box (416).

3. The device for treating aquaculture tail water by combining bacteria and algae according to claim 2, characterized in that: The outer movable sleeve of the guide pipe (415) is provided with a blocking column (412), and the blocking column (412) is movable inside the drainage pipe (411); The blocking column (412) is located at the upper end of the guide tube (415) and blocks the rectangular through groove (413) under the action of the return spring (414).

4. The device for treating aquaculture tail water by combining bacteria and algae according to claim 2, characterized in that: The bacteria and algae storage assembly (2) comprises a storage tube (23) movably mounted on the top of the processing box (1), a transmission wheel (21) being fixedly mounted on the upper end of the storage tube (23), and a motor on the top of the processing box (1) being connected to the transmission wheel (21) via a belt; The storage tube (23) is externally connected to a material injection tube (22); The top of the circulation pipe (41) is fixedly connected to the bottom of the storage pipe (23).

5. The device for treating aquaculture tail water by combining bacteria and algae according to claim 4 is characterized in that: The injection assembly (5) comprises a first protective cover (51) fixedly mounted on the bottom of the injection pipe (22), a second protective cover (52) fixedly mounted on the bottom of the first protective cover (51), and a half gear (54) movably mounted inside the second protective cover (52); A cam (53) is fixedly mounted on the top of the half gear (54), a first circular plate (55) is fixedly mounted on the top of the cam (53), a second circular plate (58) is fixedly mounted inside the first protective cover (51), and a first through hole (56) and a second through hole (57) are respectively formed on the first circular plate (55) and the second circular plate (58); The second circular plate (58) divides the first protective cover (51) into two cavities.

6. The device for treating aquaculture tail water by combining bacteria and algae according to claim 5, characterized in that: The swing assembly (6) further comprises an arc-shaped groove (65) formed on the second protective cover (52); an arc-shaped rack (63) is mounted on the top of one end of the arc-shaped plate (61) via a connecting rod (64); and the connecting rod (64) moves in the arc-shaped groove (65).

7. The device for treating aquaculture tail water by combining bacteria and algae according to claim 6, characterized in that: The arc-shaped rack (63) meshes with the half gear (54); the cam (53) is located in the lower end cavity of the first protective cover (51); and a rubber protective cover is fixedly mounted at the bottom of the second protective cover (52) to block the arc-shaped groove (65).

8. The device for treating aquaculture tail water by combining bacteria and algae according to claim 7, characterized in that: A water spray pipe (211) is fixedly mounted on the outside of the first protective cover (51), and a limit ring (212) and a support frame (214) are respectively fixedly mounted on both ends of the inside of the water spray pipe (211), and the support frame (214) is connected to a valve plate (213) via a support spring (215), and the valve plate (213) contacts the limit ring (212) under the action of the support spring (215); The inner wall of the water spray pipe (211) is provided with a circular array of guide rods (216) for guiding the valve plate (213).

9. A method for treating aquaculture tail water by combining bacteria and algae, using the device for treating aquaculture tail water by combining bacteria and algae as claimed in claim 1, characterized in that: The following steps are involved: S1, injecting the aquaculture tail water that has been preliminarily filtered into the interior of the treatment box (1), and then injecting microorganisms into the interior of the bacteria and algae storage component (2), and driving the bacteria and algae storage component (2), the mixing component (4), the injection component (5) and the swing component (6) to rotate by a motor; S2. During the rotation of the circulation pipe (41), the tail water in the processing box (1) enters the circulation pipe (41) through the water inlet groove (44), and enters the interior of the S-shaped guide pipe (42) under the action of the auger (45), moves along the S-shaped guide pipe (42) and is sprayed out from the nozzle (43). Since the nozzle (43) gradually changes from a circular shape at one end to a rectangular shape, the sprayed tail water passes through the fixed rod (62), and the fixed rod (62) swings with the arc plate (61) as the central axis under the action of the water flow; S3, during the swinging process, the microorganisms in the bacteria and algae storage component (2) and the injection component (5) are injected into the processing box (1), and a low-pressure area is formed around the nozzle (43). The microorganisms come into contact with the ejected tail water under the action of the low pressure, and are mixed with the tail water under the action of the swinging of the fixed rod (62). After the microorganisms and the tail water are mixed, the algae are injected into the bacteria and algae storage component (2) to overlap the above steps, so that the bacteria and algae can be injected into the processing box (1) and fully mixed with the tail water; S4. The tail water at the upper end of the treatment box (1) is sucked in by rotating the circulation pipe (41) and sprayed out at the lower end of the treatment box (1) through the S-shaped guide pipe (42), thereby circulating the water inside the treatment box (1) up and down, thereby avoiding the occurrence of dead zones or sedimentation in the tail water inside the treatment box (1).

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