An aeration device for mariculture tail water treatment

Abstract

The application relates to the technical field of wastewater treatment, and particularly provides an aeration device for mariculture tail water treatment, which comprises an aeration tank, a partition plate, a water inlet pipe, a primary aeration main pipeline, a plurality of pipeline support frames, a primary aeration auxiliary pipeline, a partition aeration plate, a plurality of secondary aeration pipelines, a plurality of secondary air inlets and a water outlet pipe. The tail water is subjected to two-stage aeration, and after the first-stage and second-stage aeration treatment, the tail water flows out through the water outlet pipe, the overall aeration of the tail water is realized, the tail water is branched in different areas to be subjected to aeration treatment, the air oxygen in the air is more effectively contacted with the tail water, the treatment effect of the organic matters in the tail water is improved, the oxygen is continuously consumed and timely supplied in the process of the tail water flowing, the continuous oxygen supply state is maintained, and the stability of the aeration effect is maintained.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to an aeration device for treating effluent from marine aquaculture. Background Technology

[0002] Marine aquaculture wastewater refers to water containing waste or pollutants generated during the marine aquaculture process, which requires treatment before discharge. An aeration device is a piece of equipment used for water and wastewater treatment. It increases the oxygen content in the water by injecting air into the water, promoting gas-liquid exchange and helping to maintain the oxygen level required for aquatic organism growth, thus promoting the degradation of organic matter in the wastewater. Aeration refers to the artificial introduction of air into an aeration tank through equipment to achieve the desired purpose. Aeration not only brings oxygen into the tank by contacting the liquid with air, but also accelerates the transfer of oxygen from the air to the liquid by agitating the liquid, thereby achieving the purpose of oxygenation. In addition, aeration also prevents suspended matter from settling in the tank and enhances the contact between organic matter and microorganisms with dissolved oxygen, thereby ensuring that microorganisms in the tank can oxidize and decompose organic matter in the wastewater under conditions of sufficient dissolved oxygen. The quality of the aeration device not only affects the biological treatment effect of wastewater, but also directly affects the land area, investment, and operating costs of the treatment plant. Currently, the aeration efficiency of aeration equipment is low, making it impossible to aerate the effluent in separate zones. The low contact efficiency between the effluent and oxygen results in a slow degradation efficiency of organic matter in the effluent. Summary of the Invention

[0003] Therefore, it is necessary to provide an aeration device for treating marine aquaculture wastewater to solve at least one of the technical problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] An aeration device for treating effluent from marine aquaculture includes an aeration tank, a partition plate, an inlet pipe, a primary aeration main pipe, several pipe support frames, a primary aeration secondary pipe, zoned aeration plates, several secondary aeration pipes, several secondary air inlet pipes, and an outlet pipe. The partition plate is fixedly installed on the inner walls of opposite sides of the aeration tank, dividing the interior of the aeration tank into primary and secondary aeration chambers. The inlet pipe is fixedly installed on one side wall of the aeration tank and is connected to the primary aeration chamber. The primary aeration main pipe... One end of the primary aeration main pipe is fixedly installed at the bottom of the primary aeration chamber, and the other end of the primary aeration main pipe extends upward to the outside of the primary aeration chamber and then extends to one side. The pipe support frame is fixedly installed on the side wall of the primary aeration chamber. One end of the primary aeration secondary pipe is fixedly installed on one side wall of the primary aeration chamber, and the primary aeration secondary pipe is arranged around the side wall of the primary aeration chamber. The other end of the primary aeration secondary pipe extends through the side wall of the aeration tank to the outside of the primary aeration chamber. The pipe support frame is used to support the primary aeration secondary pipe. The zoned aeration plates are fixed. Installed at the bottom of the side wall near the partition plate of the secondary aeration chamber, the partition aeration plate has several aeration passage slots extending to the other side wall. Several aeration pipes are fixedly installed on the side wall of the partition plate near the primary aeration chamber, and these pipes are connected to several aeration passage slots. The secondary aeration pipe is fixedly installed at one end of the aeration tank near the secondary aeration chamber, with one end extending into the corresponding aeration passage slot and the other end extending outside the secondary aeration chamber. The secondary air inlet pipe... The primary aeration main pipe is connected to one end of several secondary aeration pipes at the same height, and the secondary air inlet pipe is located outside the aeration tank. The outlet pipe is fixedly installed at the bottom of one side wall of the aeration tank and is connected to the secondary aeration chamber. Several main aeration holes are opened in the middle and lower part of the primary aeration main pipe. Several auxiliary aeration holes are opened on the side wall of the primary aeration secondary pipe. Several adjusting aeration holes are opened around the side wall of the secondary aeration pipe located in the aeration passage. Several vertically upward auxiliary aeration holes are opened in the middle of the secondary aeration pipe.

[0006] As a further improvement of the present invention, the primary aeration main pipe includes a main support pipe and a main air inlet pipe. The main support pipe is fixedly installed at the bottom of the primary aeration chamber, and the main air inlet pipe is fixedly installed at the top of the main support pipe. A rotating mechanism is provided on the side wall of the main support pipe. The rotating mechanism includes a water inlet guide assembly, a plurality of rotating connecting rods, and two stirring and mixing assemblies. The water inlet guide assembly is rotatably installed at the top of the main support pipe, and the rotating connecting rods are fixedly installed at the bottom of the water inlet guide assembly. The rotating connecting rods are slidably disposed on the side wall of the main support pipe. The plurality of rotating connecting rods are arranged in a circular array. The two stirring and mixing assemblies are respectively fixedly installed at the middle and bottom of the plurality of rotating connecting rods. The stirring and mixing assemblies are slidably connected to the main support pipe, and the stirring and mixing assemblies located at the bottom are rotatably connected to the bottom of the primary aeration chamber.

[0007] As a further improvement of the present invention, the water inlet guiding assembly includes a rotating collar and a plurality of arc-shaped guide plates. The rotating collar is rotatably mounted on the top of the main support pipe, and the arc-shaped guide plates are fixedly mounted on the side wall of the rotating collar. The arc-shaped guide plates are at the same height as the water inlet pipe. The plurality of arc-shaped guide plates are arranged in a circular array. The middle part of the arc-shaped guide plates is arched in a counterclockwise direction, and a water-facing arc-shaped concave surface is formed on one side wall of the arc-shaped guide plates.

[0008] As a further improvement of the present invention, the mixing assembly includes a mixing connecting ring and a plurality of mixing rods. The mixing connecting ring is fixedly installed in the middle or bottom of the plurality of rotating connecting rods, and the mixing rods are fixedly installed on the side wall of the mixing connecting ring, and the plurality of mixing rods are arranged in a ring array.

[0009] As a further improvement of the present invention, a driving mechanism is provided on the upper part of the primary aeration chamber. The driving mechanism includes a driving mounting plate, a reduction motor and a driving gear. The driving mounting plate is fixedly installed on the side wall of the primary aeration chamber. The reduction motor is fixedly installed on the top of the driving mounting plate, and the output shaft of the reduction motor extends downward through the driving mounting plate. The driving gear is fixedly installed on the output shaft of the reduction motor. A linkage gear is fixedly installed on the top of the rotating collar, and the linkage gear meshes with the driving gear.

[0010] As a further improvement of the present invention, an air hole adjustment mechanism is provided on the side wall of the secondary air intake pipe. The air hole adjustment mechanism includes an adjustment installation component, an elastic connection component, and a sliding sealing component. The adjustment installation component is fixedly installed on the side wall of the secondary air intake pipe, the elastic connection component is installed inside the adjustment installation component, and the sliding sealing component is fixedly installed on the elastic connection component. The sliding sealing component is slidably connected to the secondary air intake pipe and is used to close or open a number of adjustable aeration holes.

[0011] As a further improvement of the present invention, the adjustment and installation assembly includes an adjustment fixing ring and a fixing sleeve. The adjustment fixing ring is fixedly installed on the side wall of the secondary intake pipe, and the fixing sleeve is fixedly installed on the side wall of the adjustment fixing ring near the partition plate. A sliding inner cavity is formed inside the fixing sleeve.

[0012] As a further improvement of the present invention, the elastic connection assembly includes an adjusting spring and a sliding adjusting ring. One end of the adjusting spring is fixedly installed on the side wall of the adjusting ring, and the sliding adjusting ring is fixedly installed on the other end of the adjusting spring. Both the adjusting spring and the sliding adjusting ring are located in the sliding inner cavity, and the sliding adjusting ring is slidably connected to the secondary intake pipe.

[0013] As a further improvement of the present invention, the sliding sealing assembly includes a sealing sliding tube and a buffer baffle. The sealing sliding tube is fixedly installed on the side wall of the sliding adjustment ring and is slidably connected to the secondary air intake pipe. The buffer baffle is fixedly installed at the end of the sealing sliding tube away from the sliding adjustment ring. Both the sealing sliding tube and the buffer baffle are located in the corresponding aeration passage groove.

[0014] As a further improvement of the present invention, several pipe support frames are respectively arranged in pairs on the four side walls of the primary aeration chamber, and the two pipe support frames on the same side wall are arranged vertically at intervals.

[0015] The advantages of this invention compared to the prior art are:

[0016] 1. Through aeration in the primary and secondary aeration chambers, oxygen from the air is introduced into the effluent, increasing its oxygen content and promoting the decomposition efficiency of organic matter. The effluent undergoes two stages of aeration. After primary and secondary aeration treatment, it flows out through the effluent pipe, achieving overall aeration of the effluent. By dividing the flow into zones, the effluent is diverted to different areas for aeration treatment, which facilitates more effective contact between oxygen from the air and the effluent, improving the treatment effect of organic matter in the effluent. During the flow of the effluent, oxygen is continuously consumed and replenished in a timely manner, maintaining a continuous oxygen supply and helping to maintain the stability of the aeration effect.

[0017] 2. The water-facing concave arc surface guides the tailwater towards the main support pipe, ensuring that the tailwater entering the primary aeration chamber is located near the main support pipe and comes into contact with the air introduced from the main aeration holes. This allows the newly introduced tailwater to increase its oxygen content more quickly, thus accelerating the decomposition of organic matter and improving aeration efficiency. The rotation of several mixing rods mixes the tailwater in the primary aeration chamber, helping to evenly distribute oxygen and microorganisms, improving oxygen mass transfer efficiency, accelerating the degradation rate of organic matter in the tailwater, and thus improving treatment efficiency. It also prevents the formation of dead zones or stagnant water zones in the primary aeration chamber, i.e., areas where oxygen is difficult to reach, and effectively reduces the deposition of suspended solids, maintaining the uniformity and stability of the tailwater.

[0018] 3. By intermittently blocking and opening the main aeration hole by rotating the connecting rod, the speed and range of air flowing out of the main aeration hole can be adjusted. When the leakage part of the main aeration hole is small, the air flow rate is faster and can cover a wider range, while when the leakage part of the main aeration hole is large, the air flow rate is slower and the coverage range is closer. This adjustment allows oxygen to more effectively cover the organic matter in the effluent, improving the degradation efficiency. By increasing the oxygen coverage range, the organic matter in the effluent can come into contact with oxygen more evenly, accelerating the degradation process of organic matter and improving the efficiency of effluent treatment.

[0019] 4. By blocking and opening several adjustable aeration holes, the oxygen supply in the effluent can be controlled. When the effluent flow rate increases, the pressure on the buffer baffle increases, causing more adjustable aeration holes to open, thereby increasing the oxygen supply to the effluent in the aeration tank. This helps to improve the degradation efficiency of organic matter. By increasing the oxygen supply, the presence of the buffer baffle can buffer the effluent to a certain extent and make the effluent stay slightly on the left side of the buffer baffle, which can increase the contact time between the effluent and the outgoing air, further promoting the dissolution and mixing of oxygen, which is conducive to the degradation reaction of organic matter. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a structure according to an embodiment of the present invention;

[0021] Figure 2 This is another structural schematic diagram of an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the internal structure of an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the primary aeration main pipe, the rotating mechanism, and the driving mechanism according to an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the partition plate, the zoned aeration plate, the secondary aeration pipe, the air inlet pipe, the aeration through pipe and the air hole adjustment mechanism according to an embodiment of the present invention.

[0025] Figure 6 for Figure 5 A magnified view of a section at point A in the middle;

[0026] In the diagram: 1. Aeration tank; 2. Divider plate; 3. Inlet pipe; 4. Primary aeration main pipe; 5. Pipe support frame; 6. Primary aeration secondary pipe; 7. Zoned aeration plate; 8. Secondary aeration pipe; 9. Air inlet pipe; 10. Outlet pipe; 11. Primary aeration chamber; 12. Secondary aeration chamber; 13. Aeration passage trough; 14. Aeration passage pipe; 15. Main aeration hole; 16. Secondary aeration hole; 17. Adjustable aeration hole; 18. Auxiliary aeration hole; 401. Main support pipe section; 402. Main air inlet pipe section; 30. Rotating mechanism; 31. Inlet guide assembly; 32. Rotating connecting rod; 33. Agitator Mixing assembly; 311, rotating collar; 312, arc-shaped guide plate; 313, water-facing arc-shaped concave surface; 331, mixing connecting ring; 332, mixing rod; 40, drive mechanism; 41, drive mounting plate; 42, geared motor; 43, drive gear; 314, linkage gear; 50, air hole adjustment mechanism; 51, adjustment mounting assembly; 52, elastic connection assembly; 53, sliding sealing assembly; 511, adjusting fixing ring; 512, fixing sleeve; 513, sliding inner cavity; 521, adjusting spring; 522, sliding adjusting ring; 531, sealing sliding tube; 532, buffer baffle. Detailed Implementation

[0027] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] Please see Figures 1 to 6An aeration device for treating effluent from marine aquaculture includes an aeration tank 1, a partition plate 2, an inlet pipe 3, a primary aeration main pipe 4, several pipe support frames 5, primary aeration secondary pipes 6, zoned aeration plates 7, several secondary aeration pipes 8, several secondary air inlet pipes 9, and an outlet pipe 10. The partition plate 2 is fixedly installed on the inner walls of opposite sides of the aeration tank 1, dividing the interior of the aeration tank 1 into a primary aeration chamber 11 and a secondary aeration chamber 12. The inlet pipe 3 is fixedly installed on one side wall of the aeration tank 1 and is connected to the primary aeration chamber 11. One end of the primary aeration main pipe 4 is fixedly installed at the bottom of the primary aeration chamber 11, and the other end of the primary aeration main pipe 4 extends upward to the outside of the primary aeration chamber 11 and then extends to one side. The pipe support frame 5 is fixedly installed on the side wall of the primary aeration chamber 11. One end of the primary aeration secondary pipe 6 is fixedly installed on one side wall of the primary aeration chamber 11, and the primary aeration secondary pipe 6 is arranged around the side wall of the primary aeration chamber 11. The other end of the primary aeration secondary pipe 6 extends through the side wall of the aeration tank 1 to the outside of the primary aeration chamber 11. The pipe support frame 5 is used to support the primary aeration secondary pipe 6. The partition aeration plate 7 is fixedly installed. The aeration plate 7 is installed at the bottom of the side wall near the partition plate 2 of the secondary aeration chamber 12. Several aeration passage slots 13 are formed on one side wall of the partition plate 7, extending to the other side wall. Several aeration pipes 14 are fixedly installed on the side wall of the partition plate 2 near the primary aeration chamber 11, and each aeration pipe 14 is connected to one of the aeration passage slots 13. The secondary aeration pipe 8 is fixedly installed at one end of the aeration tank 1 near the secondary aeration chamber 12. One end of the secondary aeration pipe 8 extends into the corresponding aeration passage slot 13, and the other end extends outside the secondary aeration chamber 12. The secondary air inlet pipe... 9 is connected to one end of several secondary aeration pipes 8 at the same height, and the secondary air inlet pipe 9 is located outside the aeration tank 1. The water outlet pipe 10 is fixedly installed at the bottom of one side wall of the aeration tank 1, and the water outlet pipe 10 is connected to the secondary aeration chamber 12. Several main aeration holes 15 are opened in the middle and lower part of the primary aeration main pipe 4. Several secondary aeration holes 16 are opened on the side wall of the primary aeration secondary pipe 6. Several adjusting aeration holes 17 are opened around the side wall of the secondary aeration pipe 8 located in the aeration passage trough 13. Several vertically upward auxiliary aeration holes 18 are opened in the middle of the secondary aeration pipe 8.

[0031] The primary aeration main pipe 4 includes a main support pipe section 401 and a main air inlet pipe section 402. The main support pipe section 401 is fixedly installed at the bottom of the primary aeration chamber 11, and the main air inlet pipe section 402 is fixedly installed at the top of the main support pipe section 401. A rotating mechanism 30 is provided on the side wall of the main support pipe section 401. The rotating mechanism 30 includes a water inlet guide component 31, several rotating connecting rods 32, and two mixing components 33. The water inlet guide component 31 is rotatably installed at the top of the main support pipe section 401, and the rotating connecting rods 32 are fixedly installed at the bottom of the water inlet guide component 31. The rotating connecting rods 32 are slidably installed on the side wall of the main support pipe section 401. The several rotating connecting rods 32 are arranged in a ring array. The two mixing components 33 are respectively fixedly installed at the middle and bottom of the several rotating connecting rods 32. The mixing components 33 are slidably connected to the main support pipe section 401, and the mixing component 33 located at the bottom is rotatably connected to the bottom of the primary aeration chamber 11.

[0032] The water inlet guiding assembly 31 includes a rotating collar 311 and several arc-shaped guide plates 312. The rotating collar 311 is rotatably mounted on the top of the main support pipe 401. The arc-shaped guide plates 312 are fixedly mounted on the side wall of the rotating collar 311, and the arc-shaped guide plates 312 are at the same height as the water inlet pipe 3. The several arc-shaped guide plates 312 are arranged in a ring array. The middle part of the arc-shaped guide plates 312 arches in a counterclockwise direction. A water-facing arc-shaped concave surface 313 is formed on one side wall of the arc-shaped guide plate 312.

[0033] The mixing assembly 33 includes a mixing connecting ring 331 and a plurality of mixing rods 332. The mixing connecting ring 331 is fixedly installed in the middle or bottom of the plurality of rotating connecting rods 32, and the mixing rods 332 are fixedly installed on the side wall of the mixing connecting ring 331, and the plurality of mixing rods 332 are arranged in a ring array.

[0034] A drive mechanism 40 is provided on the upper part of the primary aeration chamber 11. The drive mechanism 40 includes a drive mounting plate 41, a reduction motor 42, and a drive gear 43. The drive mounting plate 41 is fixedly installed on the side wall of the primary aeration chamber 11. The reduction motor 42 is fixedly installed on the top of the drive mounting plate 41, and the output shaft of the reduction motor 42 extends downward through the drive mounting plate 41. The drive gear 43 is fixedly installed on the output shaft of the reduction motor 42. A linkage gear 314 is fixedly installed on the top of the rotating collar 311, and the linkage gear 314 meshes with the drive gear 43.

[0035] An air vent adjustment mechanism 50 is provided on the side wall of the secondary air intake pipe 9. The air vent adjustment mechanism 50 includes an adjustment mounting component 51, an elastic connection component 52, and a sliding sealing component 53. The adjustment mounting component 51 is fixedly installed on the side wall of the secondary air intake pipe 9. The elastic connection component 52 is installed inside the adjustment mounting component 51. The sliding sealing component 53 is fixedly installed on the elastic connection component 52 and is slidably connected to the secondary air intake pipe 9. The sliding sealing component 53 is used to close or open a number of adjustable aeration holes 17.

[0036] The adjustment and installation assembly 51 includes an adjustment fixing ring 511 and a fixing sleeve 512. The adjustment fixing ring 511 is fixedly installed on the side wall of the secondary air intake pipe 9, and the fixing sleeve 512 is fixedly installed on the side wall of the adjustment fixing ring 511 near the partition plate 2. A sliding inner cavity 513 is formed inside the fixing sleeve 512.

[0037] The elastic connection assembly 52 includes an adjusting spring 521 and a sliding adjusting ring 522. One end of the adjusting spring 521 is fixedly installed on the side wall of the adjusting ring 511, and the sliding adjusting ring 522 is fixedly installed on the other end of the adjusting spring 521. Both the adjusting spring 521 and the sliding adjusting ring 522 are located in the sliding inner cavity 513, and the sliding adjusting ring 522 is slidably connected to the secondary intake pipe 9.

[0038] The sliding sealing assembly 53 includes a sealing sliding tube 531 and a buffer baffle 532. The sealing sliding tube 531 is fixedly installed on the side wall of the sliding adjusting ring 522 and is slidably connected to the secondary air intake pipe 9. The buffer baffle 532 is fixedly installed at the end of the sealing sliding tube 531 away from the sliding adjusting ring 522. Both the sealing sliding tube 531 and the buffer baffle 532 are located in the corresponding aeration passage trough 13.

[0039] Several pipe support frames 5 are respectively set in pairs on the four side walls of the primary aeration chamber 11, and the two pipe support frames 5 on the same side wall are set at intervals.

[0040] In one embodiment, during use, the operator can introduce the pre-filtered seawater aquaculture tailwater into the primary aeration chamber 11 through the inlet pipe 3. The liquid level of the tailwater in the primary aeration chamber 11 is below the inlet guide component 31. The primary aeration main pipe 4 can introduce air into the primary aeration chamber 11. The air contains oxygen and is used to degrade the organic matter in the tailwater in the primary aeration chamber 11. The tailwater increases its oxygen content by contacting the oxygen in the air, promoting the decomposition of organic matter in the water. The main aeration hole 15 is located in the main support pipe section 401, and the axial direction of the main aeration hole 15 extends horizontally. The air sprayed outward from the main support pipe section 401 will make the oxygen content of the tailwater in the middle of the primary aeration chamber 11 greater than that of the primary aeration chamber 11. The oxygen content of the effluent near the side wall of the primary aeration chamber 11 is high. The primary aeration auxiliary pipe 6 is arranged around the side wall of the primary aeration chamber 11. The air introduced into the primary aeration chamber 11 by the primary aeration auxiliary pipe 6 can further oxygenate the effluent, ensuring that the effluent near the side wall of the primary aeration chamber 11 also receives sufficient oxygen, thus improving the decomposition efficiency of organic matter in the effluent. The effluent that has undergone preliminary decomposition in the primary aeration chamber 11 enters several aeration passages 13 through several aeration passage pipes 14. One-way valves are installed in the aeration passage pipes 14, ensuring that the effluent in the primary aeration chamber 11 can only enter the aeration passages 13 through the aeration passage pipes 14, thus dividing the effluent into several portions that enter the corresponding aeration passages 13. Within the first-stage aeration chamber 11, the effluent exiting the first-stage aeration chamber 11 flows in separate zones. Several adjustable aeration holes 17 are located on the periphery of the side wall of the second-stage aeration pipe 8 within the aeration passage 13. Air is introduced into the aeration passage 13 through these holes, increasing the oxygen content of the effluent and achieving further oxidation and decomposition. After passing through the aeration passage 13, the effluent flows into the second-stage aeration chamber 12. Air is introduced into the second-stage aeration chamber 12 through auxiliary aeration holes 18, further providing oxygen to the effluent and significantly increasing its oxygen content. During the effluent flow, oxygen is continuously consumed and replenished, improving the decomposition efficiency of organic matter in the effluent. After aeration, the effluent exits through the effluent outlet pipe. 10 flows out from the secondary aeration chamber 12, achieving overall aeration of the effluent. Through aeration in the primary aeration chamber 11 and the secondary aeration chamber 12, oxygen from the air is introduced into the effluent, increasing the oxygen content and promoting the decomposition efficiency of organic matter. The effluent undergoes two stages of aeration. After primary and secondary aeration treatment, it flows out through the effluent pipe 10, achieving overall aeration of the effluent. By dividing the flow into zones, the effluent is diverted to receive aeration treatment in different areas, which is conducive to more effective contact between oxygen from the air and the effluent, improving the treatment effect of organic matter in the effluent. During the flow of the effluent, oxygen is continuously consumed and timely supplied, maintaining a continuous oxygen supply state and helping to maintain the stability of the aeration effect.

[0041] For example, the middle and lower parts of the primary aeration main pipe 4 are provided with several main aeration holes 15, and the main aeration holes 15 are connected to the interior of the primary aeration main pipe 4. The side wall of the primary aeration secondary pipe 6 is provided with several secondary aeration holes 16, and the secondary aeration holes 16 are connected to the interior of the primary aeration secondary pipe 6. The periphery of the side wall of the secondary aeration pipe 8 located in the aeration passage trough 13 is provided with several adjusting aeration holes 17, and the adjusting aeration holes 17 are connected to the interior of the secondary aeration pipe 8. The middle part of the secondary aeration pipe 8 is provided with several vertically upward auxiliary aeration holes 18.

[0042] In one embodiment, the operator can start the reduction motor 42, which drives the drive gear 43 to rotate. The drive gear 43 drives the linkage gear 314 to rotate, which in turn drives the rotating collar 311 to rotate. The rotating collar 311 drives several arc-shaped guide plates 312 to rotate. During the rotation of the arc-shaped guide plates 312, the tailwater introduced by the inlet pipe 3 impacts the water-facing arc-shaped concave surface 313 of the arc-shaped guide plate 312. The water-facing arc-shaped concave surface 313 guides the tailwater towards the main support pipe section 401, so that the tailwater just discharged into the primary aeration chamber 11 is located near the main support pipe section 401, thus coming into contact with the air introduced into the main aeration hole 15, allowing the fresh air to enter the primary aeration chamber 11. The introduced effluent can increase its oxygen content more quickly, thereby accelerating the decomposition of organic matter and improving aeration efficiency. When the rotating collar 311 rotates, it can drive several rotating connecting rods 32 to rotate. The rotating connecting rods 32 can drive two mixing connecting rings 331 to rotate. The mixing connecting rings 331 can drive several mixing rods 332 to rotate. The rotation of several mixing rods 332 can mix the effluent in the primary aeration chamber 11, thereby helping to evenly distribute oxygen and microorganisms, improving oxygen mass transfer efficiency, accelerating the degradation rate of organic matter in the effluent, and thus improving treatment efficiency. It can also prevent the formation of dead zones or stagnant water zones in the primary aeration chamber 11, i.e., areas where oxygen is difficult to reach, and effectively reduce the deposition of suspended solids, maintaining the uniformity and stability of the effluent water body.

[0043] It is worth noting that, in another embodiment, the operator can use the tailwater introduced through the water inlet pipe 3 to impact several arc-shaped guide plates 312 without starting the reduction motor 42, thereby driving several arc-shaped guide plates 312 to rotate, so that several arc-shaped guide plates 312 drive the rotating collar 311 to rotate, which can reduce energy consumption and achieve energy saving and emission reduction.

[0044] In one embodiment, the rotating connecting rod 32 can intermittently and gradually block part of the main aeration hole 15 during rotation, and then gradually open part of the main aeration hole 15. When blocking, the rotating connecting rod 32 can only block part of the main aeration hole 15 and cannot completely block it. The above intermittent blocking and opening of the main aeration hole 15 can make the leakage part of the main aeration hole 15 change from large to small and then from small to large. With the gas flow rate remaining constant, when the leakage part of the main aeration hole 15 changes from large to small, the air flows out of the leakage part of the main aeration hole 15 faster and the air can reach a farther range. When the leakage part of the main aeration hole 15 changes from small to large, the air flows out of the leakage part of the main aeration hole 15 slower and the air can reach a shorter range. That is, the rotating connecting rod 32 can intermittently and gradually block part of the main aeration hole 15 during rotation, and then gradually open part of the main aeration hole 15. During rotation, the connecting rod 32 allows air to intermittently reach farther areas, increasing the oxygen coverage and thus improving the overall degradation efficiency of organic matter in the effluent. By intermittently blocking and opening the main aeration hole 15 by rotating the connecting rod 32, the speed and range of air flowing out of the main aeration hole 15 can be adjusted. When the leakage portion of the main aeration hole 15 is small, the air flow rate is faster and can cover a farther range, while when the leakage portion of the main aeration hole 15 is larger, the air flow rate is slower and the coverage range is closer. This adjustment allows oxygen to more effectively cover the organic matter in the effluent, improving the degradation efficiency. By increasing the oxygen coverage range, the organic matter in the effluent can come into contact with oxygen more evenly, accelerating the degradation process of organic matter and improving the efficiency of effluent treatment.

[0045] In one embodiment, after primary aeration, the effluent enters the aeration channel 13 through the aeration pipe 14. During the flow of the effluent, the left side of the buffer baffle 532 experiences pressure, causing it to move to the right. The buffer baffle 532 then drives the closed sliding pipe 531 to slide to the right. Normally, the closed sliding pipe 531 blocks part of the regulating aeration holes 17. When the closed sliding pipe 531 moves to the right, it opens some of the blocked regulating aeration holes 17. The closed sliding pipe 531 also drives the sliding adjusting ring 522 to move to the right. During this movement, the sliding adjusting ring 522 compresses the adjusting spring 521, causing it to generate elasticity. The greater the flow velocity of the effluent, the greater the pressure on the buffer baffle 532. The greater the pressure on the buffer baffle 532, the greater the movement distance of the closed sliding pipe 531. A greater movement distance allows more regulating aeration holes 17 to be opened, thus enabling more... More air can enter the aeration channel 13 through the adjustable aeration holes 17, providing oxygen to the tailwater in the aeration channel 13 and further improving the degradation efficiency of organic matter in the tailwater. The buffer baffle 532 has a certain buffering effect, allowing the tailwater to stay slightly on the left side of the buffer baffle 532, which facilitates the contact between the tailwater and the air discharged from the adjustable aeration holes 17. By blocking and opening several adjustable aeration holes 17, the oxygen supply in the tailwater can be controlled. When the tailwater flow rate increases, the pressure on the buffer baffle 532 increases, causing more adjustable aeration holes 17 to open, thereby increasing the oxygen supply in the tailwater in the aeration channel 13, which helps to improve the degradation efficiency of organic matter. By increasing the oxygen supply, the presence of the buffer baffle 532 can have a certain buffering effect on the tailwater and allow the tailwater to stay slightly on the left side of the buffer baffle 532, which can increase the contact time between the tailwater and the discharged air, further promoting the dissolution and mixing of oxygen, which is conducive to the degradation reaction of organic matter.

[0046] For example, a guide slope is formed at the top of the aeration channel 13. When the tailwater comes into contact with oxygen in the air, it can degrade and form suspended solids. The suspended solids can flow upward through the guide slope and flow out of the aeration channel 13, thus avoiding a large amount of suspended solids remaining in the aeration channel 13 and affecting the use effect.

[0047] This solution achieves the following: 1. By introducing oxygen from the air into the effluent through the primary aeration chamber 11 and the secondary aeration chamber 12, the oxygen content in the effluent is increased, promoting the decomposition efficiency of organic matter. The effluent undergoes two stages of aeration. After primary and secondary aeration treatment, it flows out through the effluent pipe 10, achieving overall aeration of the effluent. Through zoned flow, the effluent is diverted to different areas for aeration treatment, which is conducive to more effective contact between oxygen in the air and the effluent, improving the treatment effect of organic matter in the effluent. During the flow of the effluent, oxygen is continuously consumed and timely oxygen is provided, maintaining a continuous oxygen supply state and helping to maintain the stability of the aeration effect.

[0048] 2. The water-facing arc-shaped concave surface 313 guides the tailwater towards the main support pipe section 401, ensuring that the tailwater just entering the primary aeration chamber 11 is located near the main support pipe section 401, thus coming into contact with the air introduced into the main aeration holes 15. This allows the newly introduced tailwater to increase its oxygen content more quickly, thereby accelerating the decomposition of organic matter and improving aeration efficiency. The rotation of several mixing rods 332 mixes the tailwater in the primary aeration chamber 11, helping to evenly distribute oxygen and microorganisms, improving oxygen mass transfer efficiency, accelerating the degradation rate of organic matter in the tailwater, and thus improving treatment efficiency. It also prevents the formation of dead zones or stagnant water zones in the primary aeration chamber 11, i.e., areas where oxygen is difficult to reach, and effectively reduces the deposition of suspended solids, maintaining the uniformity and stability of the tailwater.

[0049] 3. By intermittently blocking and opening the main aeration hole 15 by rotating the connecting rod 32, the speed and range of air flowing out of the main aeration hole 15 can be adjusted. When the leakage part of the main aeration hole 15 is small, the air flow rate is faster and can cover a wider range, while when the leakage part of the main aeration hole 15 is large, the air flow rate is slower and the coverage range is closer. This adjustment allows oxygen to more effectively cover the organic matter in the effluent, improving the degradation efficiency. By increasing the oxygen coverage range, the organic matter in the effluent can come into contact with oxygen more evenly, accelerating the degradation process of organic matter and improving the efficiency of effluent treatment.

[0050] 4. By blocking and opening several adjustable aeration holes 17, the oxygen supply in the effluent can be controlled. When the effluent flow rate increases, the pressure on the buffer baffle 532 increases, causing more adjustable aeration holes 17 to open, thereby increasing the oxygen supply in the effluent in the aeration passage trough 13, which helps to improve the degradation efficiency of organic matter. By increasing the oxygen supply, the presence of the buffer baffle 532 can play a certain buffering role for the effluent and make the effluent stay slightly on the left side of the buffer baffle 532, which can increase the contact time between the effluent and the outgoing air, further promoting the dissolution and mixing of oxygen, which is conducive to the degradation reaction of organic matter.

[0051] All possible combinations of the various technical features in the above embodiments are described; however, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make numerous modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. An aeration device for treating effluent from marine aquaculture, characterized in that, The system includes an aeration tank (1), a partition plate (2), an inlet pipe (3), a primary aeration main pipe (4), several pipe support frames (5), a primary aeration secondary pipe (6), a zoned aeration plate (7), several secondary aeration pipes (8), several secondary air inlet pipes (9), and an outlet pipe (10). The partition plate (2) is fixedly installed on the inner sidewalls of opposite sides of the aeration tank (1), dividing the interior of the aeration tank (1) into a primary aeration chamber (11) and a secondary aeration chamber (12). The inlet pipe (3) is fixedly installed on one sidewall of the aeration tank (1), and the inlet pipe (3) is connected to the primary aeration chamber (11). One end of the primary aeration main pipe (4) is fixedly installed. The primary aeration main pipe (4) is fixedly installed at the bottom of the primary aeration chamber (11), and the other end of the primary aeration main pipe (4) extends upward to the outside of the primary aeration chamber (11) and then extends to one side. The pipe support frame (5) is fixedly installed on the side wall of the primary aeration chamber (11). One end of the primary aeration secondary pipe (6) is fixedly installed on one side wall of the primary aeration chamber (11), and the primary aeration secondary pipe (6) is arranged around the side wall of the primary aeration chamber (11). The other end of the primary aeration secondary pipe (6) extends through the side wall of the aeration tank (1) to the outside of the primary aeration chamber (11). The pipe support frame (5) is used to support the primary aeration secondary pipe (6). The partitioned aeration plate (7) is fixedly installed on the secondary aeration chamber. The bottom of the side wall of the air chamber (12) near the partition plate (2) is provided with several aeration passage slots (13) that extend to the other side wall on one side wall of the partition aeration plate (7). Several aeration passage pipes (14) are fixedly installed on the side wall of the partition plate (2) near the primary aeration chamber (11), and the several aeration passage pipes (14) are respectively connected to several aeration passage slots (13). The secondary aeration pipe (8) is fixedly installed at one end of the aeration tank (1) near the secondary aeration chamber (12). One end of the secondary aeration pipe (8) extends into the corresponding aeration passage slot (13), and the other end extends out of the secondary aeration chamber (12). The secondary air inlet pipe (9) is connected to the same One end of several secondary aeration pipes (8) of a certain height is connected, and the secondary air inlet pipe (9) is located outside the aeration tank (1). The water outlet pipe (10) is fixedly installed at the bottom of one side wall of the aeration tank (1), and the water outlet pipe (10) is connected to the secondary aeration chamber (12). Several main aeration holes (15) are opened in the middle and lower part of the primary aeration main pipe (4). Several auxiliary aeration holes (16) are opened on the side wall of the primary aeration secondary pipe (6). Several adjustment aeration holes (17) are opened around the side wall of the secondary aeration pipe (8) located in the aeration passage (13). Several vertically upward auxiliary aeration holes (18) are opened in the middle of the secondary aeration pipe (8). The primary aeration main pipe (4) includes a main support pipe section (401) and a main air inlet pipe section (402). The main support pipe section (401) is fixedly installed at the bottom of the primary aeration chamber (11), and the main air inlet pipe section (402) is fixedly installed at the top of the main support pipe section (401). A rotating mechanism (30) is provided on the side wall of the main support pipe section (401). The rotating mechanism (30) includes an inlet guide component (31), several rotating connecting rods (32), and two stirring and mixing components (33). The inlet guide component (31) is rotatably installed on the main support pipe section. At the top of (401), the rotating connecting rod (32) is fixedly installed at the bottom of the water inlet guide assembly (31), and the rotating connecting rod (32) is slidably set on the side wall of the main support pipe (401). Several rotating connecting rods (32) are arranged in a ring array. Two stirring and mixing assemblies (33) are fixedly installed at the middle and bottom of several rotating connecting rods (32), respectively. The stirring and mixing assembly (33) is slidably connected to the main support pipe (401), and the stirring and mixing assembly (33) located below is rotatably connected to the bottom of the primary aeration chamber (11).

2. The aeration device for treating marine aquaculture tailwater according to claim 1, characterized in that, The water inlet guiding assembly (31) includes a rotating collar (311) and several arc-shaped guide plates (312). The rotating collar (311) is rotatably installed on the top of the main support pipe (401). The arc-shaped guide plates (312) are fixedly installed on the side wall of the rotating collar (311), and the arc-shaped guide plates (312) are at the same height as the water inlet pipe (3). Several arc-shaped guide plates (312) are arranged in a ring array. The middle part of the arc-shaped guide plate (312) is arched in the counterclockwise direction. A water-facing arc-shaped concave surface (313) is formed on one side wall of the arc-shaped guide plate (312).

3. The aeration device for treating marine aquaculture tailwater according to claim 2, characterized in that, The mixing assembly (33) includes a mixing connecting ring (331) and a plurality of mixing rods (332). The mixing connecting ring (331) is fixedly installed in the middle or bottom of the plurality of rotating connecting rods (32). The mixing rods (332) are fixedly installed on the side wall of the mixing connecting ring (331), and the plurality of mixing rods (332) are arranged in a ring array.

4. The aeration device for treating marine aquaculture tailwater according to claim 3, characterized in that, A drive mechanism (40) is provided on the upper part of the primary aeration chamber (11). The drive mechanism (40) includes a drive mounting plate (41), a reduction motor (42), and a drive gear (43). The drive mounting plate (41) is fixedly installed on the side wall of the primary aeration chamber (11). The reduction motor (42) is fixedly installed on the top of the drive mounting plate (41), and the output shaft of the reduction motor (42) extends downward through the drive mounting plate (41). The drive gear (43) is fixedly installed on the output shaft of the reduction motor (42). A linkage gear (314) is fixedly installed on the top of the rotating collar (311), and the linkage gear (314) meshes with the drive gear (43).

5. The aeration device for treating marine aquaculture tailwater according to claim 4, characterized in that, An air hole adjustment mechanism (50) is provided on the side wall of the secondary air intake pipe (9). The air hole adjustment mechanism (50) includes an adjustment installation component (51), an elastic connection component (52), and a sliding sealing component (53). The adjustment installation component (51) is fixedly installed on the side wall of the secondary air intake pipe (9). The elastic connection component (52) is installed inside the adjustment installation component (51). The sliding sealing component (53) is fixedly installed on the elastic connection component (52) and is slidably connected to the secondary air intake pipe (9). The sliding sealing component (53) is used to close or open several adjustable aeration holes (17).

6. The aeration device for treating marine aquaculture tailwater according to claim 5, characterized in that, The adjustment mounting assembly (51) includes an adjustment fixing ring (511) and a fixing sleeve (512). The adjustment fixing ring (511) is fixedly installed on the side wall of the secondary air intake pipe (9), and the fixing sleeve (512) is fixedly installed on the side wall of the adjustment fixing ring (511) near the partition plate (2). A sliding inner cavity (513) is formed inside the fixing sleeve (512).

7. The aeration device for treating marine aquaculture tailwater according to claim 6, characterized in that, The elastic connection assembly (52) includes an adjusting spring (521) and a sliding adjusting ring (522). One end of the adjusting spring (521) is fixedly installed on the side wall of the adjusting ring (511), and the sliding adjusting ring (522) is fixedly installed on the other end of the adjusting spring (521). Both the adjusting spring (521) and the sliding adjusting ring (522) are located in the sliding inner cavity (513), and the sliding adjusting ring (522) is slidably connected to the secondary intake pipe (9).

8. The aeration device for treating marine aquaculture tailwater according to claim 7, characterized in that, The sliding sealing assembly (53) includes a sealing sliding tube (531) and a buffer baffle (532). The sealing sliding tube (531) is fixedly installed on the side wall of the sliding adjustment ring (522) and is slidably connected to the secondary air intake pipe (9). The buffer baffle (532) is fixedly installed at the end of the sealing sliding tube (531) away from the sliding adjustment ring (522). Both the sealing sliding tube (531) and the buffer baffle (532) are located in the corresponding aeration passage (13).

9. The aeration device for treating marine aquaculture tailwater according to claim 8, characterized in that, Several pipe support frames (5) are respectively set on the four side walls of the primary aeration chamber (11) in pairs, and the two pipe support frames (5) on the same side wall are set at intervals.

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