A high-efficiency bioreactor with automatic pH control

Abstract

The present invention belongs to the technical field of sewage treatment, and in particular to an efficient bioreactor for automatically adjusting pH. The following scheme is proposed, comprising a reactor body with a containing cavity, wherein a driving assembly is arranged on the top of the reactor body, and a stirring assembly and a filler distribution assembly are arranged inside the reactor body. The driving assembly drives the stirring assembly and the filler distribution assembly, and the filler distribution assembly comprises an arc-shaped mesh plate which is evenly arranged on the side wall of the reactor body and can adjust the angle, so that the arc-shaped mesh plate can fit with the side wall of the reactor body or form an angle with the side wall of the reactor body to accommodate the filler. The present application can adjust the filler state in the early, middle and late stages, thereby improving the early biofilm growth speed, the mid-term reaction efficiency and the late re-biofilm growth speed.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a high-efficiency bioreactor capable of automatically regulating pH. Background Art

[0002] The use of biological fillers in the anaerobic digestion process is mainly to place fillers in the anaerobic reactor, cultivate and domesticate the sludge, and attach a layer of biofilm to its surface. Wastewater flows into the bottom of the reactor and is gradually decomposed by biological acidification and converted into acetic acid and methane, thereby degrading the organic matter in the wastewater.

[0003] However, there are still the following problems when directly using traditional bioreactors to apply biological fillers to anaerobic digestion processes. For example, in the early stage of biological acclimation, the biological filler takes a long time to form biofilms. When the filler is fixed, the pH meter only detects the upper pH value and cannot quickly and intuitively reflect the changes in the internal pH value. During the reaction period, the filler keeps colliding when flowing with the fluid, causing the biofilm to fall off, and the biofilm is slow to re-form after falling off. Summary of the invention

[0004] The present invention provides a high-efficiency bioreactor with automatic pH control, which solves the problems in the prior art that in the early stage of biological acclimation, the biofilm formation time of the biofiller is relatively long, when the filler is fixed, the pH meter only detects the upper pH value and cannot quickly and intuitively reflect the internal pH value changes, and during the reaction period, the filler collides continuously when flowing with the fluid, causing the biofilm to fall off, and the biofilm is slow to re-form after falling off.

[0005] The present invention provides the following technical solutions:

[0006] A high-efficiency bioreactor with automatic pH control comprises a reactor body with a containing cavity, a driving assembly is arranged on the top of the reactor body, a stirring assembly and a filler distribution assembly are arranged inside the reactor body, the driving assembly drives the stirring assembly and the filler distribution assembly, and the filler distribution assembly comprises an arc-shaped mesh plate which is evenly arranged on the side wall of the reactor body and can adjust the angle, so that the arc-shaped mesh plate can fit with the side wall of the reactor body or form an angle with the side wall of the reactor body to accommodate the filler.

[0007] In a possible implementation, the arc-shaped screens are divided into at least two groups for independent control.

[0008] In a possible implementation manner, the rotation angle of the second side of the arc-shaped mesh plate around the first side is greater than 90 degrees, and adjacent arc-shaped mesh plates are arranged to avoid each other.

[0009] In a possible embodiment, a lifting assembly is provided on the reactor body for driving the arc-shaped mesh plate to reciprocate on the rotating shaft, and a circumferential limiter is provided between the arc-shaped mesh plate and the rotating shaft so that the arc-shaped mesh plate can have vertical freedom, so that the arc-shaped mesh plate can adjust the angle while moving up and down.

[0010] In a possible implementation, an upper baffle is further provided on the upper portion of the arc-shaped mesh plate. When the arc-shaped mesh plate moves downward, a material gap is formed between the upper baffle and the arc-shaped mesh plate, and the filler on the upper portion of the arc-shaped mesh plate flows out through the material gap for circulation.

[0011] In a possible implementation manner, a drug adding device is further provided on the top of the reactor body, a drug supply pipe of the drug adding device extends into the reactor body, and a solenoid valve is provided on the drug supply pipe.

[0012] In a possible implementation, a pH sensor is provided on the arc-shaped mesh plate.

[0013] In a possible implementation manner, the top of the reactor body is further provided with a material inlet and outlet, a drug addition port, a pressure relief port, a barometer, and a water pumping port, and the bottom is provided with a sewage outlet.

[0014] In a possible implementation, the stirring assembly includes a stirring shaft and a stirring paddle, and the stirring shaft and the stirring paddle drive the filler and the liquid in the reactor body to form a circular flow and an axial flow during rotation.

[0015] It is to be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the invention.

[0016] In the present invention, by arranging a stirring component and a filler distribution component, the filler can be evenly distributed to the fixed space formed by each arc-shaped mesh plate and the inner wall of the reactor body in the early stage of biological domestication for fixation, thereby providing a stable attachment surface, and the mass transfer effect of the fixed filler is improved by arranging it at uniform intervals, and by driving the arc-shaped mesh plate to move up and down reciprocatingly, the filler in the fixed space gradually rises, so that the filler film is more uniform, and under the action of axial flow and circulating flow, the filler fixed between the concave surface of the arc-shaped mesh plate and the inner wall of the reactor body is affected by the fluid flow of the circulating flow and the axial flow, thereby improving the contact efficiency between the fluid and the filler, thereby improving the mass transfer efficiency.

[0017] During the reaction period, all the curved mesh plates can be fitted to the inner wall of the reactor body, reducing the impact of the curved mesh plates on the flow of fillers.

[0018] In the later stage of the reaction, the fillers can be fixed in batches, always keeping a part of the fillers fixed and a part of the fillers flowing freely to react, thereby increasing the speed of re-filming and the reaction rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the three-dimensional structure of a high-efficiency bioreactor with automatic pH control provided by an embodiment of the present invention;

[0020] Figure 2 A partially enlarged schematic diagram of a high-efficiency bioreactor for automatically controlling pH provided by an embodiment of the present invention;

[0021] Figure 3 A schematic diagram of the internal structure of a high-efficiency bioreactor with automatic pH control provided by an embodiment of the present invention, in which a curved mesh plate is attached to the inner wall of the reactor body;

[0022] Figure 4 A schematic diagram of the internal structure of a high-efficiency bioreactor with automatic pH control provided by an embodiment of the present invention, in which a curved mesh plate and the inner wall of the reactor body form a fixed space;

[0023] Figure 5 A schematic diagram of the internal structure of a high-efficiency bioreactor with automatic pH control provided by an embodiment of the present invention, in which a group of arc-shaped mesh plates and the inner wall of the reactor body form a fixed space and a group of inner walls are attached to each other;

[0024] Figure 6 A partially enlarged schematic diagram of an arc-shaped screen plate, a rotating shaft and a rotating sleeve of a high-efficiency bioreactor for automatically controlling pH provided by an embodiment of the present invention;

[0025] Figure 7 A schematic diagram of the positions of the curved screen plates and the inner wall of the reactor body when all the curved screen plates of the high-efficiency bioreactor with automatic pH control provided by an embodiment of the present invention form an angle;

[0026] Figure 8 A schematic diagram of the positions of the curved mesh plates and the inner wall of the reactor body when all the curved mesh plates of the high-efficiency bioreactor with automatic pH control provided by an embodiment of the present invention are attached;

[0027] Fig. 9 A schematic diagram of the positions of the curved mesh plate and the inner wall of the reactor body when the curved mesh plate of the high-efficiency bioreactor with automatic pH control provided by an embodiment of the present invention is partially attached;

[0028] Fig.10 A schematic diagram of the axial flow of fluid circulation when all the arc-shaped mesh plates of a high-efficiency bioreactor with automatic pH control provided by an embodiment of the present invention form an angle.

[0029] Reference numerals:

[0030] 1. Reactor body; 2. Second motor; 3. Third motor; 4. First motor; 5. Lifting ring cylinder; 6. Caliper; 7. Upper baffle; 8. Arc mesh plate; 9. Lifting ring; 10. First gear ring; 11. Second gear ring; 12. Inlet and outlet; 13. Barometer; 14. Water extraction port; 15. Pressure relief port; 16. Dosing port; 17. Agitator; 18. Agitator shaft; 19. Upper limit ring; 20. Limit strip; 21. Lower limit ring; 22. Rotating shaft; 23. Strip groove; 24. Rotating sleeve. DETAILED DESCRIPTION

[0031] Biofilm method, also known as immobilized biofilm method, is a method of purifying wastewater by using biofilms formed on the surface of solid carriers. These biofilms are mainly composed of microorganisms such as bacteria, fungi, algae, and protozoa. They work together to remove organic matter and other pollutants in wastewater through adsorption, decomposition and oxidation.

[0032] The anaerobic digestion process decomposes organic matter into gases such as methane and carbon dioxide and stable inorganic matter through the action of anaerobic microorganisms under anoxic or anaerobic conditions. This process has the advantages of low energy consumption, small amount of residual sludge, and high load, and is particularly suitable for treating high-concentration organic wastewater.

[0033] The biofilm method is applied to the anaerobic digestion process, mainly by placing fillers in the anaerobic reactor, and by cultivating and taming the sludge, a layer of biofilm is attached to its surface. Wastewater flows in from the bottom of the reactor and is gradually decomposed by biological acidification, converted into acetic acid and methane, thereby degrading the organic matter in the wastewater. This combination makes full use of the high microbial diversity of the biofilm method and the efficient treatment capacity of the anaerobic digestion process, making the wastewater treatment effect more significant.

[0034] However, in traditional reactors, there are many forms of reactors, which are divided according to the filler setting method, including fixed filler bioreactors, flowing filler bioreactors, and semi-fixed bioreactors. Among them, fixed filler bioreactors can provide a stable attachment surface, which is convenient for the initial domestication of organisms. However, compared with flowing fillers, the mass transfer effect of fixed fillers is lower in the reaction stage, thereby reducing the reaction efficiency; flowing filler bioreactors, on the contrary, in the early stage of biological domestication, the fillers flow with the fluid, collide and rub against each other, resulting in low biofilm efficiency, while in the reaction stage, due to the high mass transfer efficiency, the reaction rate is relatively high. Semi-fixed bioreactors collect fillers in the cage body at the initial stage through a collection cage to form fixed fillers, and release fillers to form flowing fillers during the reaction period. However, on the one hand, although fixing a large amount of fillers in a concentrated manner can provide stable attachment conditions, it will further reduce the mass transfer effect, and the collection cage will also affect the flow of fillers during the reaction period, hindering the flow of fillers within the cage body, and after a large amount of fillers are concentrated, the pH value at the concentrated point will change more greatly. Only measuring the pH value at the upper part of the reactor alone will easily reduce the reactor efficiency.

[0035] Therefore, an efficient bioreactor with automatic pH control is proposed. In the early stage of biological acclimation, the biological fillers can be evenly distributed to multiple areas for fixation, which can provide a stable attachment surface on the one hand, and avoid the reduction of mass transfer efficiency caused by filler fixation on the other hand, and a pH sensor is set in the fixed filler area for continuous detection; in the reaction period, the components used for fixation are fitted with the side wall of the reactor to avoid affecting the fluid and filler; in the later stage, when the biofilm of the filler falls off, some fixed areas can be set for fixation, and the flowing filler can be intermittently converted into fixed filler, and the fixed filler can be converted into flowing filler, so as to ensure the stable operation of the anaerobic biological treatment system and the compliance of the effluent water quality.

[0036] like Figure 1-Figure 10As shown, a high-efficiency bioreactor with automatic pH control comprises a reactor body 1 with a containing cavity, a driving component is arranged on the top of the reactor body 1, a stirring component and a filler distribution component are arranged in the reactor body 1, the driving component drives the stirring component and the filler distribution component, the filler distribution component comprises an arc-shaped mesh plate 8 which is evenly arranged on the side wall of the reactor body 1 and can adjust the angle, so that the arc-shaped mesh plate 8 can fit with the side wall of the reactor body 1 or form an angle with the side wall of the reactor body 1 to accommodate the filler, and the stirring component is driven by the driving component to stir, so as to form a ring in the reactor body 1. The flow and axial flow, the annular flow and the axial flow carry the filler together, and the driving component drives the arc mesh plate 8 to rotate, so that the arc mesh plate 8 changes from a rotation in contact with the inner wall of the reactor body 1 to an angle state, so that the arc mesh plate 8 and the inner wall of the reactor body 1 are pocket-shaped, and the filler is gathered into the pockets between each arc mesh plate 8 and the inner wall of the reactor body 1 during the flow of the annular flow and the axial flow, so that the originally flowing filler is converted into a fixed state, thereby providing a stable attachment surface, and the relatively uniform distribution can reduce the impact of the reduced mass transfer efficiency caused by the fixation of the filler, thereby improving the initial biological acclimation efficiency.

[0037] The arc-shaped mesh plates 8 are divided into at least two groups for separate control. In the later stage, when the biofilm of part of the filler falls off due to friction and collision during the free flow of the filler, one group of arc-shaped mesh plates 8 can be started to form pockets to capture the filler and fix it, so that the captured filler can accelerate the biofilm formation speed. After the biofilm formation is completed, the other group of arc-shaped mesh plates 8 is started to capture the remaining biological filler, so that the remaining free-flowing filler is captured by the other group of arc-shaped mesh plates 8, and then the previous group of arc-shaped mesh plates 8 is reset to release the biological filler captured by the previous group of arc-shaped mesh plates 8. This can speed up the re-biofilm attachment of the filler in the reactor, while keeping more than half of the filler reacting with the free flow of the fluid. On the one hand, the fixed part of the filler can quickly re-attach the biofilm, and on the other hand, it can provide a stable proliferation environment, increase the biological proliferation rate, and replenish the biomass in the water body.

[0038] Furthermore, a first gear ring 10 and a second gear ring 11 are arranged on the top of the reactor body 1. The first gear ring 10 is driven to rotate by the second motor 2, and the second gear ring 11 is driven to rotate by the third motor 3. A braking gear ring brake is also arranged on one side of the first gear ring 10 and the second gear ring 11. The first gear ring 10 drives the first group of arc-shaped mesh plates 8 to rotate, and the second gear ring 11 drives the second group of arc-shaped mesh plates 8 to rotate.

[0039] Specifically, a vertical mounting ring wall is provided on the top of the reactor body 1, and a first gear ring 10 and a second gear ring 11 are rotatably mounted on the mounting ring wall. The rotating shaft 22 of the first group of arc-shaped mesh plates 8 is meshed with the first gear ring 10 through a gear, and the rotating shaft 22 of the second group of arc-shaped mesh plates 8 is meshed with the second gear through a gear. The first group of arc-shaped mesh plates 8 and the second group of arc-shaped mesh plates 8 are spaced apart from each other, and a reduction gear box is also installed between the second motor 2 and the first gear ring 10, and between the third motor 3 and the second gear ring 11.

[0040] Specifically, the gear ring brake comprises a caliper 6, in which a tooth groove matching the first gear ring 10 and the second gear ring 11 is arranged, and an elastic pad is arranged in the tooth groove. A caliper cylinder is arranged on the top of the reactor body 1 to drive the caliper 6 to move back and forth toward the first gear ring 10 and the second gear ring 11. When it is necessary to brake the first gear ring 10, the elastic pad is extended toward the first gear ring 10 by the caliper cylinder, so that the elastic pad is tightly matched with the first gear ring 10 to complete the limiting. Similarly, when it is necessary to brake the second gear ring 11, the elastic pad is extended toward the second gear ring 11 by driving the caliper cylinder, so as to complete the braking of the second gear ring 11. At least two caliper cylinders (not shown in the drawings) are arranged to match the two elastic pads.

[0041] The rotation angle of the second side of the arc-shaped mesh plate 8 around the first side is greater than 90 degrees, and the adjacent arc-shaped mesh plates 8 are arranged to avoid each other. The rotation angle of the arc-shaped mesh plate 8 is greater than 90 degrees, so the fixed space formed is located between the concave surface of the arc-shaped mesh plate 8 and the concave surface of the inner wall of the reactor body 1. On the one hand, the capacity of the fixed space is increased. On the other hand, when the arc-shaped mesh plate 8 releases the filler, as the arc-shaped mesh plate 8 is gradually reset, the filler on the concave surface of the arc-shaped mesh plate 8 gradually flows out with the fluid, and there is only fluid flowing from the concave surface of the arc-shaped mesh plate 8 between the convex surface of the arc-shaped mesh plate 8 and the inner wall of the reactor body 1. The carried filler is released along with the concave surface of the arc-shaped mesh plate 8 toward the center, and the filler will not go around between the convex surface of the arc-shaped mesh plate 8 and the inner wall of the reactor. Therefore, the filler will not be clamped during the resetting process of the arc-shaped mesh plate 8, and there will be no mutual influence when the adjacent arc-shaped mesh plates 8 adjust the angle.

[0042] Furthermore, the arc mesh plate 8 can be set to a mesh shape, a horizontal strip grid shape or a vertical strip grid shape, and the gap size is smaller than the filler size. When the filler enters the fan-shaped space and is limited under the action of the fluid, the filler will not escape from the arc mesh plate 8, and the fluid can pass through to a certain extent.

[0043] Specifically, in the present application, the arc-shaped mesh plate 8 is configured as a vertical fence. On the one hand, when the filler needs to be fixed, the filler will not escape from the arc-shaped mesh plate 8, and the fluid can pass through. On the other hand, when the arc-shaped mesh plate 8 moves up and down, the vertically arranged fence reduces the friction on the filler, avoiding the influence on the film formation of the filler, and on the other hand, it will not move downward with the filler.

[0044] Specifically, when looking down from the reactor body 1, the stirring paddle 17 stirs in a clockwise direction, the right side of each arc-shaped mesh plate 8 is the first side, and the left side of each arc-shaped mesh plate 8 is the second side. When the gear ring drives the arc-shaped mesh plate 8 to rotate, the left side of the arc-shaped mesh plate 8 rotates around the right side, and the rotation angle is greater than 90 degrees, so that the concave surface of the arc-shaped mesh plate 8 and the concave surface of the inner wall of the reactor body 1 form a fixed space.

[0045] The reactor body 1 is provided with a lifting assembly for driving the arc-shaped mesh plate 8 to reciprocate on the rotating shaft 22, and a circumferential limiter is provided between the arc-shaped mesh plate 8 and the rotating shaft 22, so that the arc-shaped mesh plate 8 can have freedom in the vertical direction, so that the arc-shaped mesh plate 8 can adjust the angle and move up and down at the same time. During biological domestication, by lifting and lowering the arc-shaped mesh plate 8, the filler in the upper part of the fixed space is released sequentially, and the filler in the lower part of the fixed space is gradually collected and raised, so that the filler originally in the upper part is domesticated to the lower part during the circulation process, so that the mass transfer and film formation of the filler are more uniform. Specifically, when the arc-shaped mesh plate 8 descends, the arc-shaped mesh plate 8 loses its limiting effect on the filler originally at the top, and the filler originally at the top is released into the fluid for circulation. Then the arc-shaped limiter is reset, and the filler in the fixed space gradually moves upward under the action of the axial flow to refill the upper limiting space, and the lower part is replenished by the circulating filler.

[0046] Furthermore, the rotating shaft 22 is rotatably connected to the upper part of the reactor body 1 through a bearing, and the lower part of the rotating shaft 22 extends into the bearing chamber, so that the rotating shaft 22 can rotate freely. A rotating sleeve 24 is arranged on the right side of the arc-shaped mesh plate, and the rotating sleeve 24 is sleeved on the rotating shaft 22, and a vertically arranged strip groove 23 is opened on the rotating shaft 22. A limit bar 20 is arranged in the rotating sleeve 24, and the limit bar 20 extends into the strip groove 23. When the gear ring drives the rotating shaft 22 to rotate, the rotating shaft 22 drives the limit bar 20 and the arc-shaped mesh plate 8 to rotate together through the strip groove 23. At the same time, the arc-shaped mesh plate 8 can be driven to move up and down through the lifting assembly.

[0047] Specifically, an upper limit ring 19 and a lower limit ring 21 are formed on the upper part of the rotating sleeve 24, and a lifting ring 9 is arranged between the upper limit ring 19 and the lower limit ring 21. A through hole adapted to the rotating sleeve 24 is opened on the lifting ring 9, and the lifting ring 9 is arranged between the upper limit ring 19 and the lower limit ring 21. By setting the through hole, the lifting ring 9 will not limit the rotation of the arc-shaped mesh plate 8. By setting the upper limit ring 19 and the lower limit ring 21, when the lifting ring 9 moves upward, it will provide an upward force to the upper limit ring 19, thereby driving all the arc-shaped mesh plates 8 to move upward together. When the lifting ring 9 moves downward, it will provide a downward force to the lower limit ring 21, thereby driving all the arc-shaped mesh plates 8 to move downward together.

[0048] Specifically, a lifting ring cylinder 5 is installed on the upper part of the reactor body 1, and the lifting ring 9 is driven to move up and down by the lifting ring cylinder 5.

[0049] An upper baffle 7 is also provided on the upper part of the arc-shaped mesh plate 8. When the arc-shaped mesh plate 8 moves downward, a material gap is formed between the upper baffle 7 and the arc-shaped mesh plate 8, and the filler on the upper part of the arc-shaped mesh plate 8 flows out through the material gap for circulation. By providing the upper baffle 7, the filler on the upper part can flow freely only when the arc-shaped mesh plate 8 is reset or the arc-shaped mesh plate 8 moves downward, thereby improving the stability of the fixed filler.

[0050] Specifically, the upper baffle 7 includes multiple concentric rings, and the spacing between the concentric rings is smaller than the filler diameter. The concentric rings are fixedly connected by connecting rods. The innermost concentric ring is spaced apart from the stirring shaft 18, and the outermost concentric ring is spaced apart from the reactor body 1. The upper baffle 7 is fixed to the top of the reactor body 1 by a vertical rod.

[0051] A dosing device is also provided on the top of the reactor body 1 . The drug supply pipe of the dosing device extends into the reactor body 1 . A solenoid valve is provided on the drug supply pipe. The pH value of the fluid inside the reactor body 1 is adjusted through the dosing device.

[0052] A pH sensor is provided at the arc-shaped mesh plate 8. When a fixed space is formed at the arc-shaped mesh plate 8 to fix the filler, the pH sensor can quickly detect the change in pH value at the place where the filler is gathered, thereby making a quick adjustment.

[0053] The top of the reactor body 1 is also provided with an inlet and outlet 12, a dosing port 16, a pressure relief port 15, a barometer 13, and a water pumping port 14, and a sewage outlet is provided at the bottom. Feeding is carried out through the inlet and outlet 12, and the internal pH value is adjusted by adding agents through the dosing port 16. The internal air pressure of the reactor body 1 is detected by the barometer 13, and the pressure is relieved through the pressure relief port 15. The reactor body 1 is cleaned through the sewage outlet at the bottom.

[0054] The stirring assembly includes a stirring shaft 18 and a stirring paddle 17. During the rotation of the stirring shaft 18 and the stirring paddle 17, the filler and the liquid in the reactor body 1 are driven to form a circulation and an axial flow. The stirring shaft 18 is the support and power transmission part of the stirring assembly. It is usually connected to the top or bottom of the reactor and obtains the rotational power through a driving device such as a motor. The stirring paddle 17 rotates under the drive of the stirring shaft 18, and stirs the material through its blades or paddles, so that a circulation and an axial flow are generated inside the reactor body 1.

[0055] Specifically, a first motor 4 is arranged on the top of the reactor body 1, and the first motor 4 is connected to the internal stirring shaft 18 through a coupling. When the first motor 4 is powered on and started, it drives the internal stirring shaft 18 to rotate, and the stirring shaft 18 drives the lower stirring paddle 17 to rotate, thereby driving the reactor body 1 to form a circulation and an axial flow.

[0056] Specifically, the stirring paddle 17 is configured as a folding blade stirring paddle 17 so that the stirring paddle 17 can provide axial flow and circular flow simultaneously during rotation.

[0057] In the present application, by setting up a stirring component and a filler distribution component, the filler can be evenly distributed to the fixed space formed by each arc-shaped mesh plate 8 and the inner wall of the reactor body 1 in the early stage of biological domestication, thereby providing a stable attachment surface, and the mass transfer effect of the fixed filler is improved by evenly spacing the arc-shaped mesh plate 8. By driving the arc-shaped mesh plate 8 to move up and down, the filler in the fixed space gradually rises, making the filler film more uniform. Under the action of axial flow and circulating flow, the filler fixed between the concave surface of the arc-shaped mesh plate 8 and the inner wall of the reactor body 1 is affected by the fluid flow of the circulating flow and the axial flow, thereby improving the contact efficiency between the fluid and the filler, thereby improving the mass transfer efficiency.

[0058] During the reaction period, all the arc-shaped mesh plates 8 can be fitted to the inner wall of the reactor body 1 , thereby reducing the influence of the arc-shaped mesh plates 8 on the flow of the filler.

[0059] In the later stage of the reaction, the fillers can be fixed in batches, always keeping a part of the fillers fixed and a part of the fillers flowing freely to react, thereby increasing the speed of re-filming and the reaction rate.

[0060] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention; the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A high-efficiency bioreactor with automatic pH control, characterized in that: The invention comprises a reactor body with a accommodating cavity, wherein a driving assembly is arranged on the top of the reactor body, and a stirring assembly and a filler distribution assembly are arranged in the reactor body, wherein the driving assembly drives the stirring assembly and the filler distribution assembly, and the filler distribution assembly comprises an arc-shaped mesh plate which is evenly arranged on the side wall of the reactor body and can adjust the angle, so that the arc-shaped mesh plate can fit with the side wall of the reactor body or form an angle with the side wall of the reactor body to accommodate the filler, the arc-shaped mesh plate is divided into at least two groups for separate control, the rotation angle of the second side of the arc-shaped mesh plate around the first side is greater than 90 degrees, and adjacent arc-shaped mesh plates are arranged to avoid each other, a pH sensor is arranged at the arc-shaped mesh plate, and the stirring assembly comprises a stirring shaft and a stirring paddle, and during the rotation of the stirring shaft and the stirring paddle, the filler and liquid in the reactor body are driven to form a ring flow and an axial flow.

2. A high-efficiency bioreactor with automatic pH control according to claim 1, characterized in that: The reactor body is provided with a lifting assembly for driving the arc-shaped mesh plate to reciprocate on the rotating shaft, and a circumferential limiter is provided between the arc-shaped mesh plate and the rotating shaft so that the arc-shaped mesh plate can have vertical freedom, so that the arc-shaped mesh plate can adjust the angle and move up and down at the same time.

3. A high-efficiency bioreactor with automatic pH control according to claim 2, characterized in that: An upper baffle is also provided on the upper part of the arc-shaped mesh plate. When the arc-shaped mesh plate moves downward, a material gap is formed between the upper baffle and the arc-shaped mesh plate, and the filler on the upper part of the arc-shaped mesh plate flows out through the material gap for circulation.

4. The high-efficiency bioreactor with automatic pH control according to claim 1, characterized in that: A drug adding device is also arranged on the top of the reactor body. A drug supply pipe of the drug adding device extends into the reactor body. A solenoid valve is arranged on the drug supply pipe.

5. The high-efficiency bioreactor with automatic pH control according to claim 1, characterized in that: The top of the reactor body is also provided with a material inlet and outlet, a drug adding port, a pressure relief port, a barometer, and a water pumping port, and the bottom is provided with a sewage outlet.

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