An aerated bioreactor

Abstract

This application discloses an aerated bioreactor, comprising a reaction cylinder, an aeration assembly, and stirring rods. The reaction cylinder is vertically arranged, with a settling cone at its bottom. The aeration assembly includes a rotating pipe, a first connecting loop pipe, a second connecting loop pipe, a connecting pipe, and aeration discs. The rotating pipe is rotatably mounted on the reaction cylinder, with one end extending into the inner cavity of the reaction cylinder. The first and second connecting loop pipes are coaxially sleeved around the rotating pipe. Several connecting pipes are arranged radially on the first connecting loop pipe, and these connecting pipes are simultaneously connected to the first connecting loop pipe, the second connecting loop pipe, and the rotating pipe. Several aeration discs are arranged on the first and second connecting loop pipes, and several stirring rods are arranged on the rotating pipe. This application has the effect of improving the wastewater treatment efficiency of the aerated reaction tank.

Description

Technical Field

[0001] This application relates to the technical field of wastewater treatment, and in particular to an aerated bioreactor. Background Technology

[0002] An aerated biological reactor (ABR) is a biological treatment system for wastewater, primarily utilizing microorganisms to degrade organic pollutants in the wastewater. Its core principle is to supply oxygen to the reactor using aeration equipment, promoting the growth and metabolism of aerobic microorganisms, thereby decomposing organic matter. Due to its advantages such as high efficiency in degradation, ease of operation, and strong adaptability, the ABR is widely used in wastewater treatment.

[0003] Currently, common aerated biological reactors typically contain several aeration discs. Oxygen is continuously introduced into the reactor through these discs to maintain the living environment for microorganisms. These microorganisms utilize oxygen to decompose organic matter in the wastewater.

[0004] Regarding the aforementioned technologies, the inventors believe that during the reaction process in the aerated reactor, uneven aeration diffusion may create blind spots and dead zones, potentially leading to oxygen deficiency or hyperoxygenation within the reactor, resulting in reduced efficiency and increased energy consumption. Furthermore, sludge deposited at the bottom of the reactor may prevent some microorganisms from fully contacting the aeration, further reducing the reactor's reaction efficiency. Utility Model Content

[0005] In order to improve the wastewater treatment efficiency of aerated reactors, this application provides an aerated bioreactor.

[0006] The aerated bioreactor provided in this application adopts the following technical solution:

[0007] An aerated bioreactor includes a reaction cylinder, an aeration assembly, and a stirring rod. The reaction cylinder is vertically arranged, and a settling cone is provided at the bottom end of the reaction cylinder. The aeration assembly is disposed on the reaction cylinder and includes a rotating pipe, a first connecting loop pipe, a second connecting loop pipe, a connecting pipe, and an aeration disc. The rotating pipe is vertically rotatably disposed on the reaction cylinder, and a first driving member for driving the rotating pipe to rotate is provided on the reaction cylinder. One end of the rotating pipe extends into the inner cavity of the reaction cylinder. The first connecting loop pipe and the second connecting loop pipe are coaxially sleeved outside the rotating pipe and located at... On the same horizontal plane, the diameter of the first connecting ring pipe is larger than the diameter of the second connecting ring pipe. Several connecting pipes are arranged along the radial direction on the first connecting ring pipe. The connecting pipe is connected to the first connecting ring pipe, the second connecting ring pipe, and the rotating pipe. Several aeration discs are connected to both the first and second connecting ring pipes. A first connecting hose is connected to one end of the rotating pipe outside the reaction cylinder. A first air compressor is installed at the end of the first connecting hose away from the rotating pipe. Several stirring rods are arranged on the rotating pipe.

[0008] By adopting the above technical solution, during the reaction, air is supplied to the rotating tube by a first air compressor, and the gas is sprayed out from several aeration discs on the first and second connecting loops. Driven by a first driving component, the rotating tube rotates within the reaction chamber, thereby causing the aeration discs to rotate as well. The stirring rod on the rotating tube also rotates, stirring the liquid in the reaction chamber, improving the uniformity of aeration distribution, helping to maintain the decomposition environment for microorganisms, and increasing wastewater treatment efficiency. Through the coordinated operation of the reaction chamber, aeration components, and stirring rod, uniform aeration distribution within the reaction chamber is achieved, effectively improving the wastewater treatment efficiency of the aerated reaction tank.

[0009] Optionally, the reaction cylinder is provided with a cleaning component, which includes cleaning inclined rods. Several cleaning inclined rods are provided on the rotating tube, and the cleaning inclined rods are fitted to the inner wall of the settling cone.

[0010] By adopting the above technical solution, when the rotating tube rotates within the reaction tank, the cleaning rod rotates along with the tube, cleaning the inner wall of the settling cone. The sediment deposited in the settling cone is stirred up, increasing the contact between microorganisms and aeration, which helps to further accelerate the wastewater treatment efficiency of the reaction tank.

[0011] Optionally, a sewage pipe is connected to the bottom end of the settling cone, a sewage valve is installed on the sewage pipe, the bottom end of the rotating pipe is closed, and a spiral conveying rod is vertically connected to the bottom end of the rotating rod, the spiral conveying rod extending into the sewage pipe.

[0012] By adopting the above technical solution, when too much solid flocculent matter accumulates in the reaction cylinder, the solid impurities can be discharged from the drain pipe by opening the drain valve. The screw conveyor rotates along with the rotating rod, transporting the solid impurities in the drain pipe and reducing the possibility of solid impurities clogging the drain pipe.

[0013] Optionally, the aeration assembly further includes a moving ring and a moving pipe. Two moving rings are horizontally arranged in the reaction cylinder, and the two moving rings are vertically aligned. The moving rings are hollow. Several aeration discs are connected to each other inside the moving rings. Several moving pipes are connected between the two moving rings. A second connecting hose is connected to one of the moving rings, and a second air compressor is provided at the end of the second connecting hose away from the moving ring.

[0014] By adopting the above technical solution, the second air compressor is started, and gas is injected into the moving ring through the second connecting hose. The gas is discharged through the aeration disc set on the moving ring, realizing air pumping from all sides of the reaction cylinder into its interior, improving the uniformity of aeration distribution in the reaction cylinder, and helping to maintain a stable microbial decomposition environment.

[0015] Optionally, a lifting rod is vertically connected to one of the moving rings, the top end of the lifting rod passes through the reaction cylinder and is slidably connected to the reaction cylinder, and a second driving member is provided on the reaction cylinder for driving the lifting rod to move in the vertical direction.

[0016] By adopting the above technical solution, during the reaction process, the lifting rod slides vertically under the drive of the second driving component. The lifting rod drives the two moving rings to move vertically, so that the moving rings and moving pipes set in the reaction cylinder move vertically, thereby expanding the aeration range and further improving the uniformity of aeration distribution in the reaction cylinder.

[0017] Optionally, a cleaning ring is connected to the outer side of several of the moving tubes, and the cleaning ring is fitted into the inner wall of the reaction cylinder.

[0018] By adopting the above technical solution, the cleaning ring moves in the reaction cylinder along with the moving tube, and the cleaning ring comes into contact with the inner wall of the reaction cylinder, thereby cleaning the inner ring wall of the reaction cylinder.

[0019] Optionally, a dissolved oxygen sensor is provided on the reaction cylinder, and the dissolved oxygen sensor is electrically connected to the first air compressor and the second air compressor.

[0020] By adopting the above technical solution, the dissolved oxygen sensor detects the dissolved oxygen content in the reaction chamber, and adjusts the power of the first air compressor and the second air compressor according to the dissolved oxygen content required by the microorganisms.

[0021] Optionally, the cleaning inclined rod is provided with a snap-fit ​​groove on the side near the settling cone, and a cleaning adhesive strip is inserted into the snap-fit ​​groove, the cleaning adhesive strip being fitted to the inner wall of the settling cone.

[0022] By adopting the above technical solution, the setting of the cleaning strip reduces the friction between the cleaning inclined rod and the settling cone, and the setting of the snap-fit ​​groove realizes the detachable connection between the cleaning strip and the cleaning inclined rod.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. Through the cooperation of the reaction cylinder, aeration components and stirring rod, the aeration is evenly distributed in the reaction cylinder, which improves the sewage treatment efficiency of the aeration reaction tank.

[0025] 2. The dissolved oxygen sensor detects the dissolved oxygen content in the reaction chamber and adjusts the power of the first and second air compressors based on the dissolved oxygen content required by the microorganisms;

[0026] 3. The cleaning strip reduces the friction between the cleaning brace and the settling cone, and the snap-fit ​​groove enables a detachable connection between the cleaning strip and the cleaning brace. Attached Figure Description

[0027] Figure 1 This is a schematic diagram illustrating the structure of an aerated bioreactor according to an embodiment of this application.

[0028] Figure 2 This is a partial cross-sectional view used in the embodiments of this application to illustrate the internal structure of the reaction vessel.

[0029] Figure 3 yes Figure 2 Enlarged view of part A in the middle.

[0030] Explanation of reference numerals in the attached drawings: 1. Reaction cylinder; 101. Settling cone; 102. Sewage pipe; 103. Sewage valve; 2. Aeration assembly; 21. Rotating pipe; 22. First connecting ring pipe; 23. Second connecting ring pipe; 24. Connecting pipe; 25. Aeration disc; 26. Moving ring; 27. Moving pipe; 3. Cleaning assembly; 31. Cleaning inclined rod; 311. Snap-fit ​​groove; 32. Cleaning rubber strip; 33. Cleaning ring; 4. First connecting hose; 5. First air compressor; 6. Rotating motor; 7. Rotating gear; 8. Driven gear; 9. Dissolved oxygen sensor; 10. Stirring rod; 11. Stirring plate; 12. Screw conveyor rod; 13. Second connecting hose; 14. Second air compressor; 15. Lifting rod; 16. Connecting plate; 17. Lifting motor; 18. Rotating rod; 19. Linkage rod. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-3 This application will be further described in detail below. An embodiment of this application provides an aerated bioreactor, which improves the wastewater treatment efficiency of an aerated reaction tank.

[0032] Reference Figure 1 and Figure 2 An aerated bioreactor includes a reaction cylinder 1, an aeration component 2, and a cleaning component 3. The reaction cylinder 1 is a vertically arranged cylinder, and a settling cone 101 is connected to the bottom end of the reaction cylinder 1. A sewage discharge pipe 102 is vertically connected to the bottom end of the settling cone 101, and a sewage discharge valve 103 is installed on the sewage discharge pipe 102.

[0033] Reference Figure 1 and Figure 2 An aeration assembly 2 is mounted on a reaction cylinder 1. The aeration assembly 2 includes a rotating pipe 21, a first connecting ring pipe 22, a second connecting ring pipe 23, a connecting pipe 24, an aeration disc 25, a moving ring 26, and a moving pipe 27. The rotating pipe 21 is vertically rotatable on the reaction cylinder 1 and is coaxial with respect to the reaction cylinder 1. One end of the rotating pipe 21 extends into the reaction cylinder 1. The bottom end of the moving pipe 27 is closed. The first connecting ring pipe 22 and the second connecting ring pipe 23 are coaxially sleeved outside the rotating pipe 21. The diameter of the first connecting ring pipe 22 is larger than the diameter of the second connecting ring pipe 23, and the first connecting ring pipe 22 and the second connecting ring pipe 23 are located on the same horizontal plane. Several connecting pipes 24 are arranged radially on the first connecting ring pipe 22, and the connecting pipes 24 are simultaneously connected to the first connecting ring pipe 22, the second connecting ring pipe 23, and the rotating pipe 21. Several aeration discs 25 are connected to the top surfaces of the first connecting ring pipe 22 and the second connecting ring pipe 23. The top end of the rotating pipe 21 is connected to the first connecting hose 4 via a sealed bearing, and the end of the first connecting hose 4 away from the rotating pipe 21 is connected to the first air compressor 5.

[0034] Reference Figure 1 and Figure 3 A rotary motor 6 is installed on the reaction cylinder 1, and a rotary gear 7 is installed on the output shaft of the rotary motor 6. A driven gear 8 is sleeved on the rotary tube 21, and the rotary gear 7 and the driven gear 8 are meshed together. A dissolved oxygen sensor 9 is installed on the reaction cylinder 1.

[0035] Reference Figure 2 A plurality of stirring rods 10 are horizontally connected to the middle position of the rotating tube 21, and each stirring rod 10 is inclinedly provided with a stirring plate 11. A spiral conveying rod 12 is vertically provided at the bottom end of the rotating rod 18, and the spiral conveying rod 12 extends into the drain pipe 102. The cleaning component 3 includes a cleaning inclined rod 31, a cleaning strip 32, and a cleaning ring 33. A plurality of cleaning inclined rods 31 are connected to the bottom end of the rotating tube 21, and the cleaning inclined rods 31 are arranged parallel to the inner wall of the settling cone 101. A snap-fit ​​groove 311 is provided along the length direction of the side of the cleaning inclined rod 31 near the settling cone 101, and the cleaning strip 32 is snapped into the snap-fit ​​groove 311, with the edge of the cleaning strip 32 adhering to the inner bottom wall of the settling cone 101.

[0036] Reference Figure 1 and Figure 2 Two moving rings 26 are horizontally arranged in the reaction cylinder 1, and the two moving rings 26 are vertically aligned correspondingly. The interior of each moving ring 26 is hollow. Several moving pipes 27 are vertically connected between the two moving rings 26. Several aeration discs 25 are connected to the inner ring wall of each moving ring 26, and the open end of each aeration disc 25 faces the rotating pipe 21. A second connecting hose 13 is connected to the upper moving ring 26. The end of the second connecting hose 13 away from the moving ring 26 extends out of the reaction cylinder 1 and is connected to a second air compressor 14.

[0037] Reference Figure 2 and Figure 3 A cleaning ring 33 is simultaneously fitted and connected to the outside of several moving tubes 27, with the outer ring wall of the cleaning ring 33 slidably fitted against the inner ring wall of the reaction cylinder 1. A lifting rod 15 is vertically fixedly connected to the upper moving ring 26, passing through the top of the reaction cylinder 1 and slidably connected to it. A connecting plate 16 is vertically installed at the top of the reaction cylinder 1, and a lifting motor 17 is installed on the connecting plate 16. A rotating rod 18 is drivenly connected to the output shaft of the lifting motor 17, and a linkage rod 19 is rotatably connected to one end of the rotating rod 18. The end of the linkage rod 19 away from the rotating rod 18 is rotatably connected to the top of the lifting rod 15. The rotating rod 18, the linkage rod 19, and the lifting rod 15 are located on the same vertical plane.

[0038] Reference Figures 1-3During wastewater treatment, the first air compressor 5 is started, and gas is introduced into the rotating pipe 21 through the first connecting hose 4. The gas passes through the connecting pipe 24, the first connecting ring pipe 22, and the second connecting ring pipe 23, and is finally ejected through the aeration disc 25. The rotating motor 6 is started, driving the rotating gear 7 to rotate. The driven gear 8 and the rotating pipe 21 rotate under the drive of the rotating gear 7, thereby driving the rotating pipe 21. The rotation of the rotating pipe 21 drives the first connecting ring pipe 22 and the second connecting ring pipe 23 to rotate, improving the uniformity of aeration distribution in the reaction cylinder 1. The stirring rod 10 and the stirring plate 11 rotate with the rotation of the rotating pipe 21, further improving the uniformity of aeration distribution in the wastewater, helping to maintain a stable microbial reaction environment, and reducing the possibility of local hypoxia or hyperxia.

[0039] Reference Figure 1 and Figure 2 The second air compressor 14 is started, and gas is injected into the moving ring 26 and the moving pipe 27 through the second connecting hose 13. The aeration disc 25 on the moving ring 26 injects gas into the inside of the reaction cylinder 1, which further improves the uniformity of aeration distribution in the reaction cylinder 1.

[0040] Reference Figure 3 and Figure 2 The lifting motor 17 starts, driving the rotating rod 18 and the linkage rod 19 to rotate. The lifting rod 15, under the action of the crank structure, slides back and forth vertically. The moving ring 26 and the moving tube 27 move back and forth vertically under the drive of the lifting rod 15, expanding the aeration range. The cleaning ring 33 moves with the moving tube 27 and cleans impurities on the inner wall of the reaction cylinder 1. When the rotating tube 21 rotates, the cleaning inclined rod 31 rotates with it. The cleaning strip 32 on the cleaning inclined rod 31 stirs and scrapes the sludge settled on the inner bottom wall of the settling cone 101, increasing the contact between microorganisms in the sludge and aeration. The cleaning strip 32 reduces the possibility of damage to the inner bottom wall of the settling cone 101. The snap-fit ​​groove 311 allows for a detachable connection between the cleaning strip 32 and the cleaning inclined rod 31, facilitating the cleaning of the cleaning strip 32.

[0041] Reference Figure 2 When the flocculent precipitate in the settling cone 101 reaches a certain amount, the drain valve 103 is opened to discharge the precipitate. The screw conveyor 12 rotates with the rotating pipe 21, conveying the precipitate and reducing the possibility of solid impurities clogging the drain pipe 102. The dissolved oxygen sensor 9 detects the dissolved oxygen content in the reaction cylinder 1 and controls the output power of the first air compressor 5 and the second air compressor 14, achieving precise regulation of the dissolved oxygen content in the reaction cylinder 1.

[0042] The implementation principle of an aerated bioreactor in this embodiment is as follows: During wastewater treatment, gas is ejected through the aeration discs 25 on the moving ring 26, the first connecting ring pipe 22, and the second connecting ring pipe 23. The rotation of the rotating pipe 21 and the stirring rod 10 improves the uniformity of aeration distribution in the reaction cylinder 1, helps maintain a stable microbial reaction environment, and reduces the possibility of local hypoxia or hyperxia.

[0043] The lifting motor 17 starts, driving the moving ring 26 to slide back and forth in the vertical direction, expanding the aeration range. The cleaning ring 33 cleans the impurities on the inner wall of the reaction cylinder 1. The cleaning strip 32 on the cleaning inclined rod 31 stirs and scrapes the sludge that has settled on the bottom wall of the settling cone 101, improving the contact between the microorganisms in the sludge and the aeration.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An aerated bioreactor characterized by: The reaction chamber includes a reaction cylinder (1), an aeration assembly (2), and a stirring rod (10). The reaction cylinder (1) is vertically arranged, and a settling cone (101) is provided at the bottom end of the reaction cylinder (1). The aeration assembly (2) is arranged on the reaction cylinder (1). The aeration assembly (2) includes a rotating pipe (21), a first connecting ring pipe (22), a second connecting ring pipe (23), a connecting pipe (24), and an aeration disc (25). The rotating pipe (21) is vertically rotatably arranged on the reaction cylinder (1). A first driving member for driving the rotating pipe (21) to rotate is provided on the reaction cylinder (1). One end of the rotating pipe (21) extends into the inner cavity of the reaction cylinder (1). The first connecting ring pipe (22) and the second connecting ring pipe (23) are coaxially sleeved on the rotating pipe (21). In addition, the diameter of the first connecting ring pipe (22) is larger than the diameter of the second connecting ring pipe (23). Several connecting pipes (24) are arranged on the first connecting ring pipe (22) along the radial direction. The connecting pipes (24) are connected to the first connecting ring pipe (22), the second connecting ring pipe (23), and the rotating pipe (21). Several aeration discs (25) are arranged on the first connecting ring pipe (22) and the second connecting ring pipe (23). A first connecting hose (4) is arranged at one end of the rotating pipe (21) outside the reaction cylinder (1). A first air compressor (5) is arranged at the end of the first connecting hose (4) away from the rotating pipe (21). Several stirring rods (10) are arranged on the rotating pipe (21).

2. An aerated biological reactor according to claim 1, characterised in that: The reaction cylinder (1) is provided with a cleaning component (3), which includes a cleaning inclined rod (31). Several cleaning inclined rods (31) are provided on the rotating tube (21), and the cleaning inclined rods (31) are fitted to the inner wall of the settling cone (101).

3. An aerated biological reactor according to claim 2, characterised in that: The bottom end of the settling cone (101) is connected to a sewage pipe (102), and a sewage valve (103) is provided on the sewage pipe (102). The bottom end of the rotating pipe (21) is closed, and a spiral conveying rod (12) is vertically connected to the bottom end of the rotating pipe (21). The spiral conveying rod (12) extends into the sewage pipe (102).

4. An aerated biological reactor according to claim 2, wherein: The aeration assembly (2) further includes a moving ring (26) and a moving pipe (27). Two moving rings (26) are horizontally arranged in the reaction cylinder (1), and the two moving rings (26) are arranged vertically. The moving rings (26) are hollow. Several aeration discs (25) are connected to the inside of the moving rings (26). Several moving pipes (27) are connected between the two moving rings (26). A second connecting hose (13) is connected to one of the moving rings (26). A second air compressor (14) is provided at the end of the second connecting hose (13) away from the moving ring (26).

5. An aerated bioreactor according to claim 4, wherein: One of the moving rings (26) is vertically connected to a lifting rod (15), the top end of the lifting rod (15) passes through the reaction cylinder (1) and is slidably connected to the reaction cylinder (1), and the reaction cylinder (1) is provided with a second driving member for driving the lifting rod (15) to move in the vertical direction.

6. An aerated bioreactor according to claim 5, wherein: A cleaning ring (33) is connected to the outer side of several of the moving tubes (27), and the cleaning ring (33) is fitted to the inner wall of the reaction cylinder (1).

7. An aerated bioreactor according to claim 4, wherein: A dissolved oxygen sensor (9) is provided on the reaction cylinder (1), and the dissolved oxygen sensor (9) is electrically connected to the first air compressor (5) and the second air compressor (14).

8. An aerated bioreactor according to claim 2, wherein: The cleaning inclined rod (31) is provided with a snap-fit ​​groove (311) on the side near the settling cone (101), and a cleaning strip (32) is inserted into the snap-fit ​​groove (311). The cleaning strip (32) is attached to the inner wall of the settling cone (101).

Images