Automatically-controlled MBR (Membrane Bioreactor)

Abstract

The utility model relates to an automatic control MBR (Membrane Biological Reactor) applied to the field of sewage treatment, which comprises a membrane biological reaction tank, a plurality of membrane components are arranged on the inner wall of the membrane biological reaction tank at equal intervals, and the top end of each membrane component is detachably connected with a mounting plate. When the surface of the internal membrane module is polluted due to impurities adhered to the surface of the internal membrane module, an electromagnetic valve can be opened through a controller to inject water into a spray head through a water pipe, so that the reverse side of the membrane module is flushed, an electric sliding rail is opened to drive the spray head to move up and down to uniformly flush the surface of the membrane module, and an electric push rod is opened through the controller during flushing; and the electric push rod which is in a stretching state in the original state is recovered, at the moment, the electric push rod drives the sealing cover to be pushed out of the drain outlet, and the drain outlet is opened, so that flushing sewage can be discharged from the drain outlet, and the effects of regularly and automatically cleaning the membrane module and prolonging the service life are effectively achieved.

Description

Technical Field

[0001] The utility model relates to an MBR membrane bioreactor with automatic control, in particular to an MBR membrane bioreactor with automatic control applied to the field of sewage treatment. Background Art

[0002] The MBR membrane bioreactor is an efficient sewage treatment device that combines membrane separation technology and biological treatment technology. In terms of automatic control, it is usually equipped with various sensors and monitoring devices, which can obtain data such as water quality parameters, flow rate, and pressure in real time. Through these data, the automatic control system can accurately adjust the aeration volume, the operating state of the membrane module (such as backwashing frequency and time), the influent and effluent flow rates, etc., so as to ensure the stability and efficiency of the treatment effect, reduce energy consumption and operating costs, reduce manual intervention, and improve the reliability and adaptability of the system.

[0003] The specification of Chinese Patent CN106698809A discloses a sewage treatment device of a new type of MBR membrane reactor, including a box body, a pretreatment tank, an activated biological treatment tank, and an MBR treatment tank. The pretreatment tank is arranged inside the box body, the activated biological treatment tank is arranged on one side of the pretreatment tank, the MBR treatment tank is arranged on one side of the activated biological treatment tank, an MBR membrane reactor is arranged inside the MBR treatment tank, the MBR membrane reactor is connected through a telescopic rod and a fixing plate, the fixing plate is connected through a rotary bearing and a fixing bracket, a water quality monitor is arranged at the bottom of the box body, a controller is arranged on one side of the fixing bracket, a sewage inlet is arranged at the top of the box body, and a sewage outlet is arranged at the bottom of the box body. A sewage inlet valve is arranged at the top of the sewage inlet, and a sewage outlet valve is arranged at the top of the sewage outlet. The overall design is reasonable, the process flow is compact and efficient, the degree of automation is high, and it is convenient for installation and popularization.

[0004] Although the automatic control of the MBR membrane module in the existing MBR membrane bioreactor can optimize the operating conditions to a certain extent to reduce membrane fouling, membrane fouling is still a problem that is difficult to completely avoid. Membrane fouling will lead to a decrease in membrane flux, an increase in transmembrane pressure, and an increase in the frequency and cost of cleaning and replacing the membrane module. Summary of the Utility Model

[0005] Aiming at the above-mentioned prior art, the technical problem to be solved by the utility model is that membrane fouling will lead to a decrease in membrane flux, an increase in transmembrane pressure, and an increase in the frequency and cost of cleaning and replacing the membrane module.

[0006] To solve the above problems, the utility model provides an MBR membrane bioreactor with automatic control, which includes a membrane bioreaction tank. A plurality of membrane modules are equidistantly installed on the inner wall of the membrane bioreaction tank. The top end of the membrane module is detachably connected with a mounting plate. A winding box and a plate frame are respectively fixedly connected to both ends of the mounting plate. Symmetrical sliding grooves are formed on the inner wall of the plate frame. A spray head is slidably connected in the sliding grooves. An electric slide rail is fixedly connected in the sliding grooves. The spray head is connected to the driving member on the electric slide rail through a slider. A water pipe extending to the water source is fixedly connected to the side end of the spray head. Sewage outlets are symmetrically formed on the bottom side end of the membrane bioreaction tank. A sealing cover is movably connected in the sewage outlets.

[0007] In the above MBR membrane bioreactor, it can effectively achieve the effect of regularly and automatically cleaning the membrane module to extend its service life.

[0008] As a further improvement of this application, a sealing piece is fixedly connected to one end of the sealing cover close to the sewage outlet, and a connecting plate is fixedly connected to one end of the sealing piece close to the sewage outlet.

[0009] As a further improvement of this application, electric push rods are symmetrically and fixedly connected to the inner wall of the membrane bioreaction tank directly above the sewage outlet, and the power end of the electric push rod is fixedly connected to the connecting plate.

[0010] As a further improvement of this application, a plurality of corresponding screw holes are equidistantly formed at the top ends of the membrane module and the mounting plate. Screws are threadedly connected in the screw holes.

[0011] As another improvement of this application, a self-returning shaft is rotatably connected to the inner wall of the winding box. A water-blocking film is wound around the surface of the self-returning shaft, and the water-blocking film extends outside the winding box.

[0012] As a supplement to another improvement of this application, a strip is fixedly connected to the bottom end of the water-blocking film outside the winding box. The strip and the plate frame are connected through a connecting rod, and the connecting rod is located outside the membrane module.

[0013] As another improvement of this application, a solenoid valve is fixedly connected to one end of the water pipe. A controller for controlling the solenoid valve, the electric push rod, and the electric slide rail is fixedly connected to the membrane bioreaction tank.

[0014] In summary, this solution can achieve: when the membrane bioreaction tank works for a long time, impurities will adhere to the surface of the internal membrane module and be contaminated. At this time, the controller can be used to open the solenoid valve to inject water into the spray head through the water pipe, so as to wash the reverse side of the membrane module. At the same time, the electric slide rail is opened to drive the spray head to move up and down to evenly wash the surface of the membrane module. While washing, the controller is used to open the electric push rod to retract the originally extended electric push rod. At this time, the electric push rod drives the sealing cover to push outwards from the sewage outlet to open the sewage outlet, so that the flushed sewage can be discharged from the sewage outlet, effectively achieving the effect of regularly and automatically cleaning the membrane module to extend its service life. Brief Description of the Drawings

[0015] Figure 1 Isometric view of the membrane bioreactor for the first embodiment of the present application;

[0016] Figure 2 Structural diagram of the membrane bioreactor for the first and second embodiments of the present application;

[0017] Figure 3 For the present application Figure 2 Enlarged view of part A in;

[0018] Figure 4 Structural diagram of the cleaning mechanism for the first and second embodiments of the present application;

[0019] Figure 5 For the present application Figure 4 Enlarged view of part B in;

[0020] Figure 6 Structural diagram of the protective film for the second embodiment of the present application;

[0021] Figure 7 Structural diagram of the nozzle for the first embodiment of the present application;

[0022] Figure 8 Internal structural diagram of the winding box for the second embodiment of the present application.

[0023] Explanation of the reference numerals in the drawings:

[0024] 1. Membrane bioreactor; 2. Sewage outlet; 3. Membrane module; 4. Mounting plate; 5. Water pipe; 6. Screw; 7. Screw hole; 8. Connecting rod; 9. Slat; 10. Water baffle film; 11. Nozzle; 12. Slide groove; 13. Slide block; 14. Electric push rod; 15. Self - rebounding shaft; 16. Winding box; 17. Plate frame; 18. Sealing cover; 19. Connecting plate. Detailed Embodiment

[0025] The following provides a detailed description of the two embodiments of the present application with reference to the drawings.

[0026] The first embodiment:

[0027] Figure 1-5 And Figure 7An automated control MBR membrane bioreactor is shown, which includes a membrane bioreactor tank 1. A plurality of membrane modules 3 are equidistantly installed on the inner wall of the membrane bioreactor tank 1. The top of the membrane module 3 is detachably connected to a mounting plate 4. Both ends of the mounting plate 4 are respectively fixedly connected to a winding box 16 and a frame 17. Symmetrical sliding grooves 12 are drilled on the inner wall of the frame 17. A spray head 11 is slidably connected in the sliding groove 12. An electric slide rail is fixedly connected in the sliding groove 12. The spray head 11 is connected to the driving member on the electric slide rail through a slider 13. A water pipe 5 extending to the water source is fixedly connected to the side end of the spray head 11. Symmetrical sewage outlets 2 are drilled on the bottom side end of the membrane bioreactor tank 1. A sealing cover 18 is movably connected in the sewage outlet 2.

[0028] Figure 1 It is shown that a sealing piece is fixedly connected to one end of the sealing cover 18 close to the sewage outlet 2, and a connecting plate 19 is fixedly connected to one end of the sealing piece close to the sewage outlet 2. Electric push rods 14 are symmetrically and fixedly connected to the inner wall of the membrane bioreactor tank 1 directly above the sewage outlet 2, and the power ends of the electric push rods 14 are fixedly connected to the connecting plate 19. A plurality of corresponding screw holes 7 are equidistantly drilled at the top of the membrane module 3 and the top of the mounting plate 4. Screws 6 are threadedly connected in the screw holes 7. One end of the water pipe 5 is fixedly connected to a solenoid valve. A controller for controlling the solenoid valve, the electric push rod 14 and the electric slide rail is fixedly connected to the membrane bioreactor tank 1.

[0029] This solution can achieve: When the membrane bioreactor tank 1 works for a long time, impurities will adhere to the surface of the internal membrane module 3 and be contaminated. At this time, the controller can be used to open the solenoid valve to inject water into the spray head 11 through the water pipe 5, so as to wash the reverse side of the membrane module 3. At the same time, the electric slide rail is opened to drive the spray head 11 to move up and down to evenly wash the surface of the membrane module 3. While flushing, the electric push rod 14 is opened through the controller, and the originally extended electric push rod 14 is retracted. At this time, the electric push rod 14 drives the sealing cover 18 to push out of the sewage outlet 2, opening the sewage outlet 2, so that the flushing sewage can be discharged from the sewage outlet 2, effectively achieving the effect of automatically cleaning the membrane module 3 regularly and extending its service life.

[0030] The second implementation method:

[0031] Figure 2-6 and Figure 8 It is shown that a self-returning shaft 15 is rotatably connected to the inner wall of the winding box 16. A water-blocking film 10 is wound around the surface of the self-returning shaft 15, and the water-blocking film 10 extends outside the winding box 16. A strip 9 is fixedly connected to the bottom end of the water-blocking film 10 outside the winding box 16. The strip 9 and the frame 17 are connected through a connecting rod 8, and the connecting rod 8 is located outside the membrane module 3.

[0032] This solution can achieve the following: when the spray head 11 is used to flush the membrane module 3, during the downward movement of the spray head 11, the connecting rod 8 will drive the water blocking membrane 10 on the opposite side to be pulled down and unfolded, covering the adjacent membrane module 3, which can prevent sewage from splashing onto the adjacent membrane module 3 during flushing and causing pollution. At the same time, when the spray head 11 moves upward, the water blocking membrane 10 is automatically retracted through the self-return spring shaft 15, effectively achieving the effect that the spray head 11 drives the water blocking membrane 10 to move accordingly to block water during flushing.

[0033] Combined with the current actual requirements, the above implementation method adopted in this application, the protection scope is not limited to this. Within the scope of knowledge possessed by those skilled in the art, various changes made without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. An automated controlled MBR membrane bioreactor, comprising a membrane bioreactor tank (1), characterized in that: A plurality of membrane modules (3) are equidistantly installed on the inner wall of the membrane bioreactor (1). The top end of the membrane module (3) is detachably connected to a mounting plate (4). Both ends of the mounting plate (4) are respectively fixedly connected to a winding box (16) and a plate frame (17). Symmetrical sliding grooves (12) are formed in the inner wall of the plate frame (17). A spray head (11) is slidably connected in the sliding groove (12). An electric slide rail is fixedly connected in the sliding groove (12). The spray head (11) is connected to a driving member on the electric slide rail through a slider (13). A water pipe (5) extending to a water source is fixedly connected to the side end of the spray head (11). Sewage outlets (2) are symmetrically formed in the bottom side end of the membrane bioreactor (1). A sealing cover (18) is movably connected in the sewage outlet (2).

2. An automated controlled MBR membrane bioreactor according to claim 1, characterized in that: One end of the sealing cover (18) close to the sewage outlet (2) is fixedly connected with a sealing sheet, and one end of the sealing sheet close to the sewage outlet (2) is fixedly connected with a connecting plate (19).

3. An automated controlled MBR membrane bioreactor according to claim 2, characterized in that: Electric push rods (14) are symmetrically and fixedly connected to the inner wall of the membrane bioreactor (1) directly above the sewage outlet (2), and the power ends of the electric push rods (14) are fixedly connected to the connecting plate (19).

4. An automated controlled MBR membrane bioreactor according to claim 1, characterized in that: A plurality of corresponding screw holes (7) are equidistantly formed in the top ends of the membrane module (3) and the mounting plate (4). Screws (6) are threadedly connected in the screw holes (7).

5. An automated controlled MBR membrane bioreactor according to claim 1, characterized in that: A self-returning shaft (15) is rotatably connected to the inner wall of the winding box (16). A water blocking film (10) is wound around the surface of the self-returning shaft (15), and the water blocking film (10) extends outside the winding box (16).

6. An automated control MBR membrane bioreactor according to claim 5, characterized in that: A strip (9) is fixedly connected to the bottom end of the water blocking film (10) outside the winding box (16). The strip (9) is connected to the plate frame (17) through a connecting rod (8), and the connecting rod (8) is located outside the membrane module (3).

7. An automated controlled MBR membrane bioreactor according to claim 3, characterized in that: One end of the water pipe (5) is fixedly connected with a solenoid valve. A controller for controlling the solenoid valve, the electric push rod (14) and the electric slide rail is fixedly connected to the membrane bioreactor (1).

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