Modular sbr pilot plant operating in multiple modes

Abstract

The utility model relates to the technical field of pilot plant, especially a modular SBR pilot plant of multi -mode operation. It mainly aims at the problem that the existing SBR pilot plant is difficult to adapt to the difference of different sewage sedimentation effect because of the fixed height of the drain pipe, leads to the problem that the supernatant is not discharged completely or the precipitate is discharged, and puts forward the following technical scheme: the modular SBR pilot plant of multi -mode operation includes a plurality of transparently arranged reaction cylinders, the bottom side of the reaction cylinder is connected with the inlet and outlet pipe that is communicated with its inside, the top of the inlet and outlet pipe is provided with the drain pipe for discharging the clean water in the reaction cylinder, the base is arranged at the bottom of the reaction cylinder, the aeration module is installed at the bottom of the reaction cylinder, and the aeration module is used for providing oxygen to the reaction cylinder, the stirring module is arranged in the reaction cylinder, and the stirring module is used for stirring the sewage in the reaction cylinder. The utility model can adapt to the difference of different sewage sedimentation effect, ensure that the supernatant is discharged completely and the precipitate is not discharged, and improve the treatment efficiency and water quality of the device.

Description

Technical Field

[0001] This utility model relates to the field of pilot plant technology, and in particular to a modular SBR pilot plant with multi-mode operation. Background Technology

[0002] The sequencing batch reactor (SBR) is a commonly used wastewater treatment technology. Its core principle is to purify wastewater by sequentially completing stages such as influent, aeration, sedimentation, and effluent discharge within the same reaction tank. SBR pilot-scale units developed based on this process are widely used in wastewater treatment process research and development, parameter optimization, and treatment effect verification, serving as a key device bridging laboratory pilot-scale testing and engineering applications.

[0003] In actual operation, existing SBR pilot plants typically execute each operational stage sequentially according to a pre-set program. After the aeration stage, the system enters the sedimentation stage, utilizing the density difference between activated sludge and water to achieve solid-liquid separation. However, the actual wastewater treated has a complex and diverse composition, with significant differences in suspended solids content and sludge settling performance among different types of wastewater.

[0004] In the subsequent drainage stage, the drainage pipe height of existing pilot-scale devices is mostly fixed, and its height is usually preset based on the sedimentation of conventional wastewater. When dealing with wastewater with poor sedimentation and a low clarifier interface, a fixed-height drainage pipe may not be able to fully discharge the upper clarifier, causing some treated water to remain in the reaction tank, reducing the effective treatment capacity of the device. Conversely, when the treated wastewater has good sedimentation and a low sludge layer interface, if the drainage pipe height is not set properly, it is easy to suck in and discharge the sediment below during the drainage process, which not only affects the effluent quality but may also cause drainage pipe blockage, increasing the maintenance cost and operational failure rate of the device. In view of this, this utility model proposes a modular SBR pilot-scale device with multi-mode operation. Utility Model Content

[0005] The purpose of this invention is to address the problem in the background technology that existing SBR pilot-scale devices, due to the fixed height of the drain pipe, are difficult to adapt to the differences in sedimentation effects of different wastewaters, resulting in incomplete discharge of the upper clarified liquid or discharge of sediment. This invention proposes a modular SBR pilot-scale device with multiple operating modes.

[0006] The technical solution of this utility model is as follows: A modular SBR pilot plant with multi-mode operation includes multiple transparent reaction cylinders. Each reaction cylinder has an inlet / outlet pipe connected to its bottom side, and a drain pipe above the inlet / outlet pipe for draining clean water from the reaction cylinder. A base is located at the bottom of each reaction cylinder. An aeration module is installed at the bottom of each reaction cylinder to supply oxygen to the reaction cylinder. A stirring module is installed inside the reaction cylinder to stir the wastewater. A monitoring module is installed inside the reaction cylinder to monitor the dissolved oxygen concentration. An adjustment component is connected to the drain pipe to adjust the drainage height. An extraction module is located in the base to remove sediment from the reaction cylinder.

[0007] Optionally, an overflow pipe is connected to the side of the reaction cylinder and communicates with it. Multiple sets of sampling pipes are fixedly connected to the side of the reaction cylinder between the drain pipe and the overflow pipe. All sets of sampling pipes are communicated with the reaction cylinder. Valves are installed at the ends of the inlet and outlet pipes, drain pipes, overflow pipes, and sampling pipes away from the reaction cylinder, and are connected to pipelines through the valves.

[0008] Optionally, the aeration module includes an air pump installed in the base, the input end of the air pump extending to the outside of the base, the output end of the air pump being fixedly connected to an air delivery pipe, the air delivery pipe passing through the base and the reaction cylinder and connected to a dispersion pipe, and multiple sets of aeration pipes being installed on both sides of the dispersion pipe.

[0009] Optionally, the stirring module includes a servo motor installed on the top of the reaction cylinder, the output end of the servo motor passing through the reaction cylinder and fixedly connected to a stirring rod, and multiple sets of stirring blades installed on the stirring rod.

[0010] Optionally, the monitoring module includes a DO instrument disposed above the reaction cylinder, a detection rod connected to the bottom of the DO instrument, the detection rod passing through the top of the reaction cylinder and fixedly connected to the reaction cylinder, a fixing cylinder sleeved around the outer ring of the detection rod, the fixing cylinder being fixedly connected to the top wall of the reaction cylinder, and multiple sets of through holes being formed on the outer ring of the fixing cylinder.

[0011] Optionally, the adjusting assembly includes a connecting pipe fixedly connected to the inner wall of the reaction vessel, the connecting pipe communicating with the drain pipe, a sleeve fixedly connected to the end of the connecting pipe away from the drain pipe communicating with it, a sealing plate fixedly connected to the bottom of the sleeve, an adjusting pipe slidably connected in the sleeve, the adjusting pipe being "U" shaped, a sealing ring being fitted at one end of the adjusting pipe, and the sealing ring being interference-fitted with the inner wall of the sleeve.

[0012] Optionally, a synchronization block is fixedly connected to the regulating tube, a first connecting rod is fixedly connected to the top of the synchronization block, a first push rod motor is installed on the top of the reaction cylinder, and the output end of the first push rod motor passes through the reaction cylinder and is fixedly connected to the first connecting rod.

[0013] Optionally, a sealing gasket is provided below the other end of the regulating tube, a pressure plate is fixedly connected to the bottom of the sealing gasket, a movable plate is fixedly connected to one side of the pressure plate, the movable plate is L-shaped, a limit sleeve is fixedly connected to the side of the movable plate, the regulating tube passes through the limit sleeve and slides with it, a second push rod motor is installed at the top of the reaction cylinder, the output end of the second push rod motor passes through the reaction cylinder and is connected to the movable plate by a second connecting rod, the outer rings of the first connecting rod and the second connecting rod are slidably connected to a limit block, and the limit block is fixedly connected to the inner wall of the reaction cylinder.

[0014] Optionally, the extraction module includes a self-priming pump installed in the base, with a suction pipe fixedly connected to the input end of the self-priming pump, one end of the suction pipe being connected to the inlet and outlet pipes, a solenoid valve being provided on the suction pipe, and a discharge pipe fixedly connected to the output end of the self-priming pump, the discharge pipe passing through the base.

[0015] Optionally, a controller is also included, wherein the air pump, servo motor, DO meter, first push rod motor, second push rod motor, self-priming pump, and solenoid valve are all electrically connected to the controller.

[0016] In summary, this application includes at least one of the following beneficial technical effects: By coordinating components such as the first push rod motor and the adjusting pipe in the adjustment assembly, this utility model can precisely adjust the drainage height according to the interface height of the supernatant after sedimentation of different wastewaters, ensuring that the adjusting pipe is always above the sediment. This avoids the problem of the fixed drainage pipe failing to completely drain the supernatant and prevents the discharge of sediment from affecting the effluent quality, effectively adapting to the treatment needs of wastewaters with different characteristics. Furthermore, the fixed cylinder and through-hole ensure that the detection rod is in a low-flow-rate monitoring environment, guaranteeing accurate dissolved oxygen concentration monitoring data from the DO meter. The controller adjusts the air pump power in real time based on the monitoring data, combined with the uniform stirring of the stirring module, maintaining the dissolved oxygen concentration within the target range during the reaction process, improving the wastewater purification reaction effect, and ensuring the reliability of the device operation. In conclusion, this utility model can adapt to the differences in sedimentation effects of different wastewaters, ensuring that the supernatant is completely drained without discharging sediment, thus improving the treatment efficiency and effluent quality of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a modular SBR pilot plant operating in multiple modes; Figure 2 This is a schematic diagram of the reaction cylinder; Figure 3 yes Figure 2A schematic diagram of the cross-sectional structure; Figure 4 yes Figure 3 Enlarged view of point A in the middle; Figure 5 yes Figure 3 Enlarged diagram of point B in the middle.

[0018] Reference numerals: 1. Reaction cylinder; 11. Inlet / outlet pipe; 12. Drain pipe; 13. Overflow pipe; 14. Sampling pipe; 2. Base; 3. Aeration module; 31. Air pump; 32. Air supply pipe; 33. Dispersion pipe; 34. Aeration pipe; 4. Stirring module; 41. Servo motor; 42. Stirring rod; 43. Stirring blade; 5. Monitoring module; 51. DO meter; 52. Detection rod; 53. Fixing cylinder; 54. Through hole; 6. Adjustment component; 61. 62. Connecting pipe; 63. Sleeve; 64. Sealing plate; 65. Adjusting pipe; 66. Sealing ring; 67. Synchronizing block; 68. First connecting rod; 69. First push rod motor; 60. Sealing gasket; 610. Pressure plate; 611. Moving plate; 612. Limiting sleeve; 613. Second push rod motor; 614. Second connecting rod; 615. Limiting block; 71. Extraction module; 72. Self-priming pump; 73. Suction pipe; 74. Solenoid valve; 75. Discharge pipe. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0020] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0021] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Example like Figure 1 and Figure 2 As shown, this utility model proposes a modular SBR pilot plant with multi-mode operation, comprising multiple transparent reaction cylinders 1, up to three sets, arranged in parallel. The transparency facilitates observation of internal sedimentation. An inlet / outlet pipe 11 is connected to one side of the bottom of each reaction cylinder 1, allowing for the input of wastewater and the discharge of sediment. A drain pipe 12 is located above the inlet / outlet pipe 11 to drain clean water from the reaction cylinder 1. An overflow pipe 13 is connected to the side of each reaction cylinder 1, facilitating the discharge of gases generated during the reaction and the removal of excess liquid. Multiple sampling pipes 14 are fixedly connected to the side of each reaction cylinder 1 between the drain pipe 12 and the overflow pipe 13, allowing for the discharge of liquid at different depths for testing. Valves are installed at the ends of the inlet / outlet pipe 11, drain pipe 12, overflow pipe 13, and sampling pipe 14 away from the reaction vessel 1, and are connected to pipelines through the valves to facilitate control of the opening and closing of each outlet. The drain pipe 12 is connected to a water pump through a valve to extract clean water from the reaction vessel 1.

[0025] For further details, please refer to Figures 1 to 3 The aforementioned pilot-scale device includes a base 2 located at the bottom of the reaction cylinder 1. The base 2 is hollow and has a flat bottom, making it stable to place.

[0026] Furthermore, the aforementioned pilot-scale device also includes an aeration module 3 installed at the bottom of the reaction chamber 1. The aeration module 3 is used to supply oxygen to the reaction chamber 1. The aeration module 3 includes an air pump 31 installed in the base 2. The input end of the air pump 31 extends to the outside of the base 2 to facilitate the intake of air from the outside. At the same time, a filter cartridge is provided at the input end to filter impurities in the air. The output end of the air pump 31 is fixedly connected to an air supply pipe 32. The air supply pipe 32 passes through the base 2 and the reaction chamber 1 and is connected to a dispersion pipe 33. Multiple sets of aeration pipes 34 are installed on both sides of the dispersion pipe 33 to facilitate the discharge of outside air into the reaction chamber 1 through the aeration pipes 34, thereby increasing the dissolved oxygen concentration of the liquid in the reaction chamber 1.

[0027] Furthermore, the aforementioned pilot-scale device includes a stirring module 4 disposed within the reaction chamber 1. The stirring module 4 is used to stir the wastewater in the reaction chamber 1. The stirring module 4 includes a servo motor 41 installed at the top of the reaction chamber 1. The output end of the servo motor 41 passes through the reaction chamber 1 and is fixedly connected to a stirring rod 42. Multiple sets of stirring blades 43 are installed on the stirring rod 42. After the servo motor 41 is started, it drives the stirring blades 43 to rotate through the stirring rod 42 to stir the wastewater in the reaction chamber 1, thereby improving the reaction effect while ensuring the dissolved oxygen concentration.

[0028] Furthermore, such as Figure 3 and Figure 4 As shown, the pilot-scale apparatus also includes a monitoring module 5 installed in the reaction chamber 1. The monitoring module 5 is used to monitor the dissolved oxygen concentration in the reaction chamber 1. The monitoring module 5 includes a DO meter 51 located above the reaction chamber 1. A detection rod 52 is connected to the bottom of the DO meter 51. The detection rod 52 passes through the top of the reaction chamber 1 and is fixedly connected to the reaction chamber 1. A fixed cylinder 53 is fitted around the outer ring of the detection rod 52 and is fixedly connected to the top wall of the reaction chamber 1. Multiple sets of through holes 54 are opened on the outer ring of the fixed cylinder 53. The water in the reaction chamber 1 is in a flowing state during stirring, but due to the presence of the fixed cylinder 53 and the through holes 54, the liquid in the detection part of the detection rod 52 is in a low flow rate state, which facilitates the monitoring of its dissolved oxygen concentration.

[0029] For details, please refer to Figure 2 , Figure 3 and Figure 5As shown, the pilot-scale device includes an adjustment assembly 6 connected to the drain pipe 12, which is used to adjust the drainage height. The adjustment assembly 6 includes a connecting pipe 61 fixedly connected to the inner wall of the reaction cylinder 1, communicating with the drain pipe 12. A sleeve 62, communicating with the drain pipe 12, is fixedly connected to the end of the connecting pipe 61 away from the drain pipe 12. Liquid in the reaction cylinder 1 first enters the sleeve 62 and then exits through the connecting pipe 61 and the drain pipe 12. A sealing plate 63 is fixedly connected to the bottom of the sleeve 62 to prevent liquid from entering through the bottom of the sleeve 62. An adjustment pipe 64 is slidably connected to the sleeve 62. The adjustment pipe 64 is U-shaped, and a sealing ring 65 is fitted onto one end of the adjustment pipe 64. The sealing ring 65 is press-fitted with the inner wall of the sleeve 62 to prevent liquid from entering the sleeve 62 through the gap between the adjustment pipe 64 and the sleeve 62. By adjusting the height of the adjustment pipe 64, one end of the adjustment pipe 64 is positioned above the sediment, facilitating the complete extraction of clean water. A synchronization block 66 is fixedly connected to the regulating pipe 64. A first connecting rod 67 is fixedly connected to the top of the synchronization block 66. When the first connecting rod 67 moves, it drives the regulating pipe 64 to move through the synchronization block 66. A first push rod motor 68 is installed on the top of the reaction cylinder 1. The output end of the first push rod motor 68 passes through the reaction cylinder 1 and is fixedly connected to the first connecting rod 67. After the first push rod motor 68 is started, it drives the first connecting rod 67 to move. A sealing gasket 69 is set below the other end of the regulating pipe 64. A pressure plate 610 is fixedly connected to the bottom of the sealing gasket 69. When the pressure plate 610 approaches the regulating pipe 64, it squeezes the regulating pipe 64 to seal one end of the regulating pipe 64, preventing sewage from entering the sleeve 62 and the regulating pipe 64 before the sewage reaction and sedimentation. When the height of the regulating pipe 64 is adjusted to change the drainage height, the regulating pipe 64 and the pressure plate 610 move synchronously. When it is necessary to extract clean water, the pressure plate 610 moves downward away from the regulating pipe 64. A movable plate 611 is fixedly connected to one side of the pressure plate 610. The movable plate 611 is L-shaped, and a limiting sleeve 612 is fixedly connected to the side of the movable plate 611. An adjusting tube 64 passes through the limiting sleeve 612 and slides with it. When the adjusting tube 64 slides in the sleeve 62, the limiting sleeve 612 helps to make the movement of the adjusting tube 64 smooth. A second push rod motor 613 is installed at the top of the reaction cylinder 1. The output end of the second push rod motor 613 passes through the reaction cylinder 1 and is connected to the movable plate 611 by a second connecting rod 614. After the second push rod motor 613 is started, it drives the movable plate 611 to move through the second connecting rod 614, thereby driving the pressure plate 610 to move. The outer rings of the first connecting rod 67 and the second connecting rod 614 are slidably connected to a limiting block 615. The limiting block 615 is fixedly connected to the inner wall of the reaction cylinder 1. The limiting block 615 makes the movement of the first connecting rod 67 and the second connecting rod 614 smooth.

[0030] Furthermore, the aforementioned pilot-scale apparatus also includes an extraction module 7 disposed in the base 2. The extraction module 7 is used to discharge the precipitate in the reaction chamber 1. The extraction module 7 includes a self-priming pump 71 installed in the base 2. A suction pipe 72 is fixedly connected to the input end of the self-priming pump 71. One end of the suction pipe 72 is connected to the inlet / outlet pipe 11. The self-priming pump 71 is connected to the inlet / outlet pipe 11 through the suction pipe 72 and sucks out the precipitate in the reaction chamber 1 after startup. A solenoid valve 73 is provided on the suction pipe 72 to control the opening and closing of the suction pipe 72. During the reaction, the suction pipe 72 is blocked to prevent liquid from flowing out through the suction pipe 72. A discharge pipe 74 is fixedly connected to the output end of the self-priming pump 71. The discharge pipe 74 passes through the base 2 to facilitate the discharge of the precipitate.

[0031] Finally, the aforementioned pilot-scale device also includes a controller. The air pump 31, servo motor 41, DO meter 51, first push rod motor 68, second push rod motor 613, self-priming pump 71, and solenoid valve 73 are all electrically connected to the controller for centralized control. The controller is programmable, supports multi-condition operation settings, and can achieve variable control by controlling the module parameters corresponding to different reaction cylinders 1, thereby conducting control experiments. The three reaction cylinder 1 modules can work independently or collaboratively to simulate various SBR process flows and different combinations of operating parameters, making it widely applicable to wastewater treatment technology demonstration, pilot-scale testing, and operational simulation scenarios.

[0032] In this embodiment, the controller first opens the valves on the inlet / outlet pipe 11, allowing wastewater to enter the transparent reaction cylinder 1 through the inlet / outlet pipe 11. The operator can observe the internal liquid level changes through the reaction cylinder 1. When the liquid level reaches a preset height, the controller closes the valves on the inlet / outlet pipe 11, stopping the water intake. If there is excessive liquid in the reaction cylinder 1 during the water intake process, the excess liquid can be discharged through the overflow pipe 13. Simultaneously, the gas generated during the reaction can also be released through the overflow pipe 13, ensuring the safe operation of the device.

[0033] After the water intake is complete, the controller starts the air pump 31 in the aeration module 3 to draw air from the outside. The air is delivered to the dispersion pipe 33 through the air supply pipe 32, and then discharged into the reaction tank 1 through multiple sets of aeration pipes 34 on both sides of the dispersion pipe 33, increasing the dissolved oxygen concentration in the liquid. At the same time, the servo motor 41 of the stirring module 4 starts, driving the stirring rod 42 and stirring blades 43 to rotate, stirring the sewage in the reaction tank 1, so that the sewage and activated sludge are fully mixed, improving the reaction effect and ensuring uniform dissolved oxygen concentration. During this stage, the DO meter 51 of the monitoring module 5 monitors the dissolved oxygen concentration in real time through the detection rod 52. Due to the effect of the outer fixed cylinder 53 and the through hole 54 of the detection rod 52, the liquid in the detection area is in a low flow rate state, ensuring the accuracy of the monitoring data. The controller adjusts the power of the air pump 31 according to the feedback data of the DO meter 51 to maintain the dissolved oxygen within the target range.

[0034] After the aeration and stirring processes are completed, the controller shuts off the air pump 31 and the servo motor 41, and the device enters the sedimentation stage. Solid-liquid separation is achieved by utilizing the density difference between activated sludge and water. The operator observes the sedimentation through the transparent reaction cylinder 1 and can extract liquid at different depths for testing through multiple sets of sampling tubes 14. When sampling, simply open the valve of the corresponding sampling tube 14, and close the valve of the sampling tube 14 after sampling is completed.

[0035] After sedimentation, the controller activates the adjustment assembly 6 to adjust the drainage height. First, the first push rod motor 68 and the second push rod motor 613 are started synchronously. Through the first connecting rod 67 and the synchronizing block 66, the adjusting pipe 64 slides within the sleeve 62. The height of the adjusting pipe 64 is adjusted according to the height of the supernatant interface after sedimentation, ensuring one end of the adjusting pipe 64 is above the sediment. Then, the second push rod motor 613 is started, causing the moving plate 611 and the pressure plate 610 to move downwards through the second connecting rod 614, moving the sealing gasket 69 away from one end of the adjusting pipe 64 and releasing the blockage. After adjustment, the controller opens the valve on the drain pipe 12 and starts the connected water pump. The supernatant in the reaction cylinder 1 is discharged sequentially through the adjusting pipe 64, sleeve 62, connecting pipe 61, and drain pipe 12. The sealing ring 65 prevents liquid from seeping into the gap between the adjusting pipe 64 and the sleeve 62, ensuring the drainage is pure.

[0036] After drainage is completed, the controller starts the extraction module 7, opens the solenoid valve 73 and the self-priming pump 71. The self-priming pump 71 sucks out the sediment at the bottom of the reaction cylinder 1 through the suction pipe 72 and the inlet / outlet pipe 11, and then discharges it out of the device through the discharge pipe 74. After the sediment is discharged, the controller closes the self-priming pump 71 and the solenoid valve 73, thus completing one operating cycle, and the device can enter the next cycle.

[0037] The above specific embodiments are merely optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A modular SBR pilot plant operating in multiple modes, characterized in that, include: Multiple transparent reaction cylinders (1) are provided. One side of the bottom of each reaction cylinder (1) is connected to an inlet / outlet pipe (11) that communicates with its interior. A drain pipe (12) is provided above the inlet / outlet pipe (11) to drain clean water from the reaction cylinder (1). A base (2) is provided at the bottom of the reaction cylinder (1). An aeration module (3) is installed at the bottom of the reaction cylinder (1) to provide oxygen to the reaction cylinder (1). A stirring module (4) is provided in the reaction cylinder (1) to stir the wastewater in the reaction cylinder (1). A monitoring module (5) is installed in the reaction cylinder (1) to monitor the dissolved oxygen concentration in the reaction cylinder (1). An adjustment component (6) is connected to the drain pipe (12) to adjust the drainage height. An extraction module (7) is provided in the base (2) to remove sediment from the reaction cylinder (1).

2. The modular SBR pilot plant with multi-mode operation according to claim 1, characterized in that, The side of the reaction cylinder (1) is connected to an overflow pipe (13) that communicates with it. Between the drain pipe (12) and the overflow pipe (13), there are multiple sets of sampling pipes (14) that are fixedly connected to the side of the reaction cylinder (1). All sets of sampling pipes (14) are connected to the reaction cylinder (1). The end of the inlet pipe (11), drain pipe (12), overflow pipe (13) and sampling pipe (14) away from the reaction cylinder (1) is equipped with a valve and connected to a pipeline through the valve.

3. The modular SBR pilot plant with multi-mode operation according to claim 2, characterized in that, The aeration module (3) includes an air pump (31) installed in the base (2). The input end of the air pump (31) extends to the outside of the base (2). The output end of the air pump (31) is fixedly connected to an air supply pipe (32). The air supply pipe (32) passes through the base (2) and the reaction cylinder (1) and is connected to a dispersion pipe (33). Multiple sets of aeration pipes (34) are installed on both sides of the dispersion pipe (33).

4. A modular SBR pilot plant with multi-mode operation according to claim 3, characterized in that, The stirring module (4) includes a servo motor (41) installed on the top of the reaction cylinder (1). The output end of the servo motor (41) passes through the reaction cylinder (1) and is fixedly connected to a stirring rod (42). Multiple sets of stirring blades (43) are installed on the stirring rod (42).

5. A modular SBR pilot plant with multi-mode operation according to claim 4, characterized in that, The monitoring module (5) includes a DO instrument (51) disposed above the reaction cylinder (1). The bottom of the DO instrument (51) is connected to a detection rod (52). The detection rod (52) passes through the top of the reaction cylinder (1) and is fixedly connected to the reaction cylinder (1). A fixing cylinder (53) is sleeved on the outer ring of the detection rod (52). The fixing cylinder (53) is fixedly connected to the top wall of the reaction cylinder (1). Multiple sets of through holes (54) are opened on the outer ring of the fixing cylinder (53).

6. A modular SBR pilot plant with multi-mode operation according to claim 5, characterized in that, Said adjusting assembly (6) comprises a connecting pipe (61) fixedly connected to the inner wall of the reaction cylinder (1), said connecting pipe (61) is in communication with the drain pipe (12), an end of said connecting pipe (61) remote from the drain pipe (12) is fixedly connected with a sleeve (62) in communication therewith, a closing plate (63) is fixedly connected to the bottom of said sleeve (62), an adjusting pipe (64) is slidably connected in said sleeve (62), said adjusting pipe (64) is arranged in a "冂" shape, a sealing ring (65) is sleeved and installed at one end of said adjusting pipe (64), and said sealing ring (65) is in interference fit with the inner wall of the sleeve (62).

7. A modular SBR pilot plant with multi-mode operation according to claim 6, characterized in that, A synchronization block (66) is fixedly connected to said adjusting pipe (64), a first connecting rod (67) is fixedly connected to the top of said synchronization block (66), a first push rod motor (68) is installed on the top of said reaction cylinder (1), and the output end of said first push rod motor (68) penetrates through the reaction cylinder (1) and is fixedly connected with the first connecting rod (67).

8. A modular SBR pilot plant with multi-mode operation according to claim 7, characterized in that, A sealing gasket (69) is arranged below the other end of said adjusting pipe (64), a pressing plate (610) is fixedly connected to the bottom of said sealing gasket (69), a moving plate (611) is fixedly connected to one side of said pressing plate (610), said moving plate (611) is arranged in an L-shape, a limit sleeve (612) is fixedly connected to the side surface of said moving plate (611), said adjusting pipe (64) penetrates through the limit sleeve (612) and is in sliding fit therewith, a second push rod motor (613) is installed on the top of said reaction cylinder (1), the output end of said second push rod motor (613) penetrates through the reaction cylinder (1) and a second connecting rod (614) is connected between said output end and the moving plate (611), a limit block (615) is slidably connected to the outer rings of said first connecting rod (67) and said second connecting rod (614) together, and said limit block (615) is fixedly connected to the inner wall of the reaction cylinder (1).

9. A modular SBR pilot plant with multi-mode operation according to claim 8, characterized in that, Said extraction module (7) comprises a self-priming pump (71) installed in the base (2), an input end of said self-priming pump (71) is fixedly connected with a suction pipe (72), one end of said suction pipe (72) is in communication with the inlet-outlet pipe (11), a solenoid valve (73) is arranged on said suction pipe (72), an output end of said self-priming pump (71) is fixedly connected with a discharge pipe (74), and said discharge pipe (74) penetrates through the base (2).

10. A modular SBR pilot plant operating in multiple modes according to claim 9, characterized in that, The utility model also comprises a controller, and said air pump (31), servo motor (41), DO meter (51), first push rod motor (68), second push rod motor (613), self-priming pump (71) and solenoid valve (73) are all electrically connected to the controller.

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