Dynamic membrane biological reaction box assembly

Abstract

The utility model relates to the technical field of membrane biological reaction, in particular to a dynamic membrane biological reaction box component, which comprises a box body, a framework arranged inside the box body and an aeration connecting mechanism arranged at the inner bottom of the box body, the membrane carrier is vertically loaded in the frame, is connected with the suction mechanism through a connecting pipe and is used for pumping water in the membrane carrier; a movable rod is axially arranged on a connecting base connected to the frame in a penetrating mode, the movable rod is clamped into rod containing openings oppositely formed in the open end of the box body, the box body is provided with a lifting mechanism used for driving the movable rod to move up and down in a reciprocating mode, and a plurality of resistance plates of a V structure are horizontally arranged in the box body and located on the two sides of the film carrier. According to the utility model, the lifting mechanism drives the movable rod to move up and down in a reciprocating manner, so that sewage in the box body moves along with the membrane carrier, and the sewage impacts the membrane carrier under the action of the resistance plate, so that the sludge content on the membrane carrier is reduced, and the backwashing frequency of the membrane reaction box is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of membrane biological reaction, in particular to a dynamic membrane biological reaction tank assembly. Background Art

[0002] The working principle of a membrane bioreactor is to utilize aerobic microorganisms in the reactor to degrade organic pollutants in sewage, and at the same time utilize nitrifying bacteria in the reactor to convert ammonia nitrogen in sewage to remove the peculiar smell generated in sewage (the peculiar smell in sewage is mainly generated by ammonia nitrogen). Finally, high-efficiency solid-liquid separation is carried out through a hollow fiber membrane to discharge water.

[0003] In the existing membrane bioreactor, the gas generated by an aeration device rises to disturb the sewage inside the device, thereby increasing the residence time of oxygen in the sewage. However, during the separation process of the membrane separation unit in the existing membrane bioreactor, sludge will adhere to the surface of the membrane, and thus it is necessary to perform regular backwashing. Multiple reverse washings will cause the membrane bioreactor to stop using, affecting the sewage treatment efficiency. At the same time, during the backwashing process, clear water permeates from the inside of the membrane to the outside of the membrane in the reverse direction, and the sludge attached to the membrane surface cannot be completely detached. There is a lack of an auxiliary cleaning structure, and thus a membrane bioreactor with a new structure is needed. Summary of the Utility Model

[0004] The utility model aims to solve the above defects and provides a dynamic membrane biological reaction tank assembly.

[0005] In order to overcome the defects in the background art, the technical solution adopted by the utility model to solve its technical problems is: a dynamic membrane biological reaction tank assembly, including a box body, with a framework arranged inside, and an aeration connection mechanism arranged at the inner bottom;

[0006] A membrane carrier, vertically loaded in the framework, is connected to a suction mechanism through a connecting pipe and is used for pumping water into the membrane carrier.

[0007] A movable rod is axially penetrated through a connecting seat connected to the framework, and the movable rod is clamped into a rod placement opening oppositely opened at the opening end of the box body. An elevating mechanism for driving the movable rod to reciprocate up and down is arranged on the box body. A plurality of V-shaped resistance plate members are horizontally arranged in the box body, and the resistance plate members are located on both sides of the membrane carrier.

[0008] Further improvement includes that the suction mechanism includes a collecting box and a pressure pump communicated with the collecting box through a pipeline.

[0009] Further improvements include that the aeration connection mechanism comprises an aeration box located at the bottom inside the box body and an aeration flange pipe communicated with the aeration box and extending to the outside of the box body. A plurality of through holes corresponding to the membrane carriers are formed in the aeration box, and connecting parts are inserted into the through holes. The limiting parts sequentially connected to both ends of the connecting part are respectively located inside the aeration box and inside the box body. An air inlet cavity communicated with the inside of the aeration box is axially formed in the limiting part located inside the aeration box on the connecting part, and a plurality of small holes for communicating the air inlet cavity with the inside of the box body are formed in the connecting part.

[0010] Further improvements include that a sealing ring is embedded in the limiting part, and the sealing ring is arranged centered on the connecting part.

[0011] Further improvements include that the lifting mechanism comprises a bracket arranged on the box body and a driving motor arranged on the bracket. The output end of the driving motor passes through the bracket and is connected to the cam. A rotating wheel rotatably connected to the end of the movable rod is placed above the cam so that the cam drives the rotating wheel to rotate while the movable rod moves up and down reciprocally.

[0012] Further improvements include that the membrane carrier comprises a membrane frame with a hollow structure and membrane filaments. The membrane filaments are arranged side by side inside the membrane frame, and the membrane filaments are communicated with the membrane frame.

[0013] Further improvements include that a drain flange pipe for discharging residual sewage and sludge is arranged on the box body.

[0014] The beneficial effects of the present utility model are as follows: In this design, the lifting mechanism drives the movable rod to move up and down reciprocally, so that the sewage inside the box body moves together with the membrane carrier, and under the action of the resistance plate member, the sewage impacts the membrane carrier, reducing the sludge content on the membrane carrier, thereby playing a washing role on the membrane carrier, reducing the number of backwashes of the membrane carrier, and improving the cleaning effect of the sludge; the special structure of the aeration connection mechanism can convey air inside the box body, increase the oxygen content in the sewage, and ensure that no water enters inside; the special structure of the lifting mechanism is beneficial to disassembling with the movable rod, facilitating the backwashing of the membrane carrier. Description of the Drawings

[0015] The following further illustrates the present utility model in conjunction with the drawings and embodiments.

[0016] Figure 1 is the top view of the present utility model;

[0017] Figure 2 is Figure 1 the N-N sectional view in

[0018] Figure 3 is Figure 2 the enlarged view of A in

[0019] Figure 4 is the assembly drawing of the membrane carrier and the suction mechanism in the present utility model;

[0020] Figure 5 is the front view of the membrane carrier in the present utility model;

[0021] Figure 6 is Figure 5 the enlarged view of B in

[0022] In the figure, 1 - movable rod, 2 - drain flange pipe, 3 - drive motor, 4 - frame, 5 - pressure pump, 6 - membrane carrier, 7 - resistance plate member, 8 - box body, 9 - bracket, 10 - collection box, 11 - aeration flange pipe, 12 - rotating wheel, 13 - cam, 14 - rod placement opening, 15 - pipeline, 16 - connecting pipe, 17 - aeration box, 18 - intake cavity, 19 - limiting part, 20 - small hole, 21 - sealing ring, 22 - connecting seat, 23 - through hole, 24 - connecting part, 601 - membrane frame, 602 - membrane filament. Detailed implementation manners

[0023] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments in the present utility model belong to the scope of protection of the present utility model.

[0024] According to Figure 1 and Figure 2 as shown, a dynamic membrane bioreactor tank assembly includes a box body 8 with a frame 4 arranged inside and an aeration connection mechanism arranged at the inner bottom;

[0025] A membrane carrier 6 is vertically loaded in the frame 4 and is connected to a suction mechanism through a connecting pipe 16 for pumping water inside the membrane carrier 6;

[0026] A movable rod 1 is axially penetrated through a connecting seat 22 connected to the frame 4, and the movable rod 1 is clamped into rod placement openings 14 oppositely formed at the opening end of the box body 8. The box body 8 is provided with a lifting mechanism for driving the movable rod 1 to reciprocate up and down. A plurality of V-shaped resistance plate members 7 are horizontally arranged inside the box body 8 and are located on both sides of the membrane carrier 6. When the sewage moves up and down together with the membrane carrier 6, the sewage will impact the resistance plate members 7. The resistance plate members 7 cause the sewage to be diverted and thus impact the membrane carrier 6, thereby improving the sludge cleaning effect on the membrane carrier 6. The rod placement openings 14 play a guiding role.

[0027] According to Figure 2 、 Figure 4 As shown, the suction mechanism includes a collecting box 10 and a pressure pump 5 connected to the collecting box 10 through a pipeline 15. A negative pressure is formed in the collecting box 10 by the pressure pump 5, so as to suck the filtered clear water in the membrane carrier 6. The pressure pump 5 sends the sucked clear water into a clear water tank through a pipeline.

[0028] According to Figure 3 As shown, the aeration connection mechanism includes an aeration box 17 located at the bottom inside the box body 8 and an aeration flange pipe 11 connected to the aeration box 17 and extending to the outside of the box body 8. The aeration flange pipe 11 is used to convey air into the aeration box 17 to increase the oxygen content in the sewage in the box body 8. A number of through holes 23 corresponding to the membrane carrier 6 are formed in the aeration box 17, and a connecting portion 24 is inserted into the through holes 23. Limiting portions 19 sequentially connected to both ends of the connecting portion 24 are respectively located inside the aeration box 17 and inside the box body 8. An air inlet cavity 18 communicating with the inside of the aeration box 17 is axially formed on the limiting portion 19 located inside the aeration box 17 and on the connecting portion 24, and a number of small holes 20 for communicating the air inlet cavity 18 with the inside of the box body 8 are formed on the connecting portion 24. The small holes 20 are used to convey air into the box body 8. At the same time, it can also prevent sewage from quickly flowing into the aeration box 17 to cause water accumulation. When air is conveyed into the aeration box 17 through the aeration flange pipe 11 and the air pressure in the aeration box 17 is greater than the water pressure of the sewage in the box body 8, the air pressure pushes the connecting portion 24 and the limiting portion 19 to move upward, and the box body 8 is communicated with the aeration box 17 through the air inlet cavity 18 and the small holes 20, and air is input into the box body 8 to increase the oxygen concentration in the sewage in the box body 8. When air is no longer supplied to the aeration box 17, the limiting portion 19 will drive the connecting portion 24 to move downward under the action of water pressure, so that the small holes 20 are interrupted from the box body 8 and the air supply is stopped. The limiting portion 19 also has the functions of limiting and preventing water from entering the aeration box 17. The limiting portion 19 keeps the connecting portion 24 always in the through holes 23. At the same time, this design is also beneficial to preventing the suspension in the sewage from precipitating and blocking the small holes 20.

[0029] According to Figure 3 As shown, in order to prevent sewage from flowing into the aeration box 17 along the inner wall of the through hole 23, therefore, a sealing ring 21 is embedded on the limiting portion 19. The sealing ring 21 is arranged centered on the connecting portion 24, so as to cooperate with the inner wall of the aeration box 17 to seal the through hole 23 when the limiting portion 19 moves up and down, and prevent the through hole 23 from leaking water.

[0030] The lifting mechanism includes a bracket 9 provided on the box body 8 and a driving motor 3 provided on the bracket 9. The output end of the driving motor 3 passes through the bracket 9 and is connected to the cam 13. The rotating wheel 12 rotatably connected to the end of the movable rod 1 is placed above the cam 13 so that while the cam 13 drives the rotating wheel 12 to rotate, the movable rod 1 reciprocates up and down. Through this design, the frame 4 and the membrane carrier 6 are driven to reciprocate up and down, so that the sewage in the box body 8 flows between the membrane carriers 6. The friction between the water flow and the membrane carrier 6 reduces the sludge content on the membrane filaments 602 of the membrane carrier 6 and improves the cleaning effect. The design is convenient for taking out the membrane carrier 6 and the frame 4 and is convenient for backwashing the membrane carrier 6.

[0031] According to Figure 5 and Figure 6 As shown, the membrane carrier 6 includes a membrane frame 601 with a hollow structure and membrane filaments 602. The membrane filaments 602 are arranged side by side in the membrane frame 601 to form a membrane curtain, and the membrane filaments 602 are communicated with the membrane frame 601. The sewage filtered by the membrane filaments 602 enters the membrane frame 601 and is then pumped into the clear water tank by the suction mechanism.

[0032] A drain flange pipe 2 for discharging residual sewage and sludge is provided on the box body 8, and the drain flange pipe 2 is communicated with the box body 8.

[0033] Working principle: First, start the lifting mechanism. The lifting mechanism drives the movable rod 1 to reciprocate up and down. At the same time, the movable rod 1, the frame 4, and the membrane carrier 6 will reciprocate up and down together. The sewage will move with the membrane carrier 6. Due to the existence of the resistance plate member 7, after the sewage impacts the V-shaped resistance plate member 7, it is split and impacts the membrane carrier 6 to improve the sludge flushing effect. Air is filled into the sewage in the box body 8 through the aeration connection mechanism to increase the oxygen content in the air.

[0034] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A dynamic membrane bioreactor assembly, characterized in that: It comprises a box body (8), a frame (4) arranged inside, and an aeration connection mechanism arranged at the inner bottom; A membrane carrier (6) is vertically loaded in the frame (4) and connected to a suction mechanism via a connecting pipe (16) for pumping water from the membrane carrier (6); A movable rod (1) is axially inserted through a connecting seat (22) connected to the frame (4), and the movable rod (1) is inserted into a rod placement opening (14) correspondingly opened on an open end of the box body (8). A lifting mechanism is provided on the box body (8) for driving the movable rod (1) to reciprocate up and down. A plurality of V-structured resistance plates (7) are horizontally arranged in the box body (8), and the resistance plates (7) are located on both sides of the membrane carrier (6).

2. A dynamic membrane bioreactor chamber assembly as claimed in claim 1, characterized in that: The suction mechanism comprises a collection box (10) and a pressure pump (5) connected to the collection box (10) via a pipeline (15).

3. A dynamic membrane bioreactor assembly as claimed in claim 1, characterized in that: The aeration connection mechanism comprises an aeration box (17) located at the bottom of the box body (8) and an aeration flange pipe (11) connected to the aeration box (17) and extending to the outside of the box body (8); the aeration box (17) is provided with a plurality of through holes (23) corresponding to the membrane carrier (6), and a connecting portion (24) is inserted into the through hole (23); limiting portions (19) connected in sequence to both ends of the connecting portion (24) are respectively located in the aeration box (17) and in the box body (8); an air inlet cavity (18) communicating with the inside of the aeration box (17) is axially provided on the connecting portion (24) and the limiting portion (19) located in the aeration box (17); and a plurality of small holes (20) are provided on the connecting portion (24) for communicating the air inlet cavity (18) with the inside of the box body (8).

4. A dynamic membrane bioreactor assembly as claimed in claim 3, characterized in that: A sealing ring (21) is embedded in the limiting portion (19), and the sealing ring (21) is arranged with the connecting portion (24) as the center.

5. A dynamic membrane bioreactor chamber assembly as claimed in claim 1, characterized in that: The lifting mechanism comprises a bracket (9) arranged on the box body (8) and a driving motor (3) arranged on the bracket (9); the output end of the driving motor (3) passes through the bracket (9) and is connected to a cam (13); a rotating wheel (12) rotatably connected to the end of the movable rod (1) is placed above the cam (13) so that the cam (13) drives the rotating wheel (12) to rotate while the movable rod (1) reciprocates up and down.

6. A dynamic membrane bioreactor chamber assembly as claimed in claim 1, characterized in that: The membrane carrier (6) comprises a membrane frame (601) with a hollow structure and membrane filaments (602); the membrane filaments (602) are arranged side by side in the membrane frame (601), and the membrane filaments (602) are connected to the membrane frame (601).

7. A dynamic membrane bioreactor chamber assembly as claimed in claim 1, characterized in that: The box body (8) is provided with a drainage flange pipe (2) for discharging residual sewage and sludge.

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