CN114031176A

CN114031176A - Immersed flat membrane bioreactor component

Info

Publication number: CN114031176A
Application number: CN202111491612.1A
Authority: CN
Inventors: 唐建强
Original assignee: Zhejiang Huaqiang Environmental Technology Co ltd
Current assignee: Zhejiang Huaqiang Environmental Technology Co ltd
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-02-11
Anticipated expiration: 2041-12-08
Also published as: CN114031176B

Abstract

The invention relates to the technical field of membrane bioreactors, and particularly discloses an immersed flat membrane bioreactor assembly, which comprises a reaction tank, a membrane reaction zone and an aeration zone, wherein an aerator is arranged in the aeration zone, the output end of the aerator is fixedly connected with a supporting plate, the surface of the supporting plate is rotatably connected with a first rotating disk, the surface of the first rotating disk is symmetrically and fixedly connected with supporting tubes, the outlet ends of the supporting tubes are communicated with aeration tubes, the upper surfaces of the aeration tubes are provided with a plurality of aeration holes, the aerator is started to output oxygen from the aeration holes, and the aeration holes are positioned on the upper surfaces of the aeration tubes, so that the gas can move vertically upwards and can pass through gaps between filtering membranes, the aeration efficiency is improved, impurities on the other hand, the impurities on the surfaces of the filtering membranes can be taken away when the gas passes through the gaps, and the dirt on the surfaces of the filtering membranes can be cleaned without arranging a motor, the energy is saved, and the cost is reduced.

Description

Immersed flat membrane bioreactor component

Technical Field

The invention relates to the technical field of membrane bioreactors, in particular to an immersed flat membrane bioreactor component.

Background

The membrane bioreactor is a novel high-efficiency sewage treatment device which combines a membrane separation technology with a traditional activated sludge process. Compared with the traditional activated sludge method, the membrane bioreactor uses membrane separation to replace secondary sedimentation tank sedimentation separation in the traditional activated sludge method, so that the concentration of activated sludge in the system is greatly improved, the water quality and volume load of the system effluent are greatly improved, and the effluent can be recycled as reclaimed water or directly enters a downstream RO/NF desalination system to produce pure water for reuse in a process system. At present, the membrane bioreactor is mainly divided into a built-in type and an external type according to different using states of membranes, wherein the built-in type is also called as an immersed membrane bioreactor, and is relatively low in energy consumption due to low-pressure water pumping, so that the membrane bioreactor is the most widely applied membrane bioreactor. The immersed membrane bioreactor adopted at home and abroad is basically a hollow fiber membrane and a flat membrane, and the existing flat membrane has high strength, easy cleaning and long service life, so the immersed flat membrane bioreactor has wide application.

The membrane bioreactor of current dull and stereotyped membrane of submergence formula, the aeration pipe is generally installed in the below of membrane module, the aeration pipe can be supported and the shearing force can be applyed to the membrane surface to gas, wash away the membrane surface, but this kind of mode is at the in-process of handling, still can form one deck mud cake layer on the surface of membrane, remain on the membrane in order to prevent mud among the prior art, generally adopt the agitator to stir sewage, make water be in stirring flow state, can avoid the dirt to remain on the membrane surface as far as possible, influence the filter effect in later stage, but current agitator need adopt motor drive, when increasing cost, electric power resource is wasted, energy-conservation is not enough.

Disclosure of Invention

The invention provides an immersed flat membrane bioreactor component, which aims to solve the problems in the prior art, namely, in the existing immersed flat membrane bioreactor, an aeration pipe is generally arranged below a membrane component, the aeration pipe can supply nutrient and gas can apply shearing force to the membrane surface to wash the membrane surface, but a mud cake layer is still formed on the membrane surface in the treatment process by adopting the mode.

In order to solve the problems, the invention adopts the following technical scheme:

an immersed flat membrane bioreactor assembly comprises a reaction tank, wherein a membrane reaction area is arranged in the reaction tank, a filtering membrane is arranged in the membrane reaction area, an aeration area is arranged below the membrane reaction area, an aerator is arranged in the aeration area, an output end of the aerator is fixedly connected with a supporting disk, a first rotating disk is rotatably connected to the surface of the supporting disk, a supporting tube is symmetrically and fixedly connected to the surface of the first rotating disk, the outlet end of the supporting tube is communicated with an aeration tube, an inner cavity of the supporting disk, an inner cavity of the first rotating disk, an inner cavity of the supporting tube and an inner cavity of the aeration tube are communicated with each other, a plurality of aeration holes are formed in the upper surface of the aeration tube, the aerator is started to convey oxygen to the aeration tube from the supporting disk, the first rotating disk and the supporting tube in sequence, and finally the oxygen is output from the surface of the aeration tube because the aeration holes are positioned on the upper surface of the aeration tube, therefore, the gas can move vertically upwards, the vertically upwards gas can pass through the gap between the filtering membranes, on one hand, the aeration efficiency is improved, on the other hand, when the gas passes through the gap, impurities on the surfaces of the filtering membranes can be taken away, the dirt on the surfaces of the filtering membranes can be cleaned without arranging a motor, and the cost is reduced while the energy is saved.

As a preferable scheme of the invention, the aerator pipe is annular, the side wall of the aerator pipe is communicated with a guide pipe, the side wall of the aerator pipe is symmetrically provided with first support plates, a support rod is connected between the two first support plates, a first movable plate is fixedly connected to the outer wall of the support rod, and the outlet end of the guide pipe is aligned to the side wall of the first movable plate.

As a preferable scheme of the invention, the inner wall of the aeration pipe is rotatably connected with a fixed disc, the surface of the fixed disc is fixedly connected with a support plate, the support plate is fixedly connected with the reaction tank, the middle part of the fixed disc is fixedly connected with a second rotating rod, the second rotating rod penetrates through the fixed disc and is rotatably connected with the fixed disc, one end of the second rotating rod is fixedly connected with a second rotating disc, the side wall of the second rotating disc is fixedly connected with a plurality of second support plates, and the other end of the second rotating rod is fixedly connected with a first rotating disc.

As a preferable scheme of the invention, the surface of the second support plate is rotatably connected with a first rotating rod, the upper end of the first rotating rod is fixedly connected with stirring blades, the number of the second support plates is even, and adjacent stirring blades are movably connected with a connecting plate through a pin shaft.

As a preferable scheme of the present invention, the first rotating rod penetrates through the second support plate, the lower end of the first rotating rod is rotatably connected to a second movable plate, one end of the second movable plate, which is far away from the second support plate, is rotatably connected to a rotating column, the bottom of the rotating column is fixedly connected to a first sliding block, the surface of the fixed disk is provided with a first sliding groove, and the first sliding block is slidably connected in the first sliding groove.

As a preferable scheme of the invention, grooves are symmetrically formed in the inner wall of the reaction tank, movable blocks are arranged in the grooves, a supporting frame is arranged on the outer wall of the filtering membrane and fixedly connected with the movable blocks, an outer tube is fixedly connected in the grooves, an inner rod is connected in the outer tube in a sliding mode, and one end, far away from the outer tube, of the inner rod is fixedly connected with the movable blocks.

As a preferable mode of the present invention, the inner wall of the outer tube is provided with a second sliding groove, the second sliding groove is connected with a second sliding block in a sliding manner, the second sliding block is fixedly connected with the inner rod, the second sliding groove includes a first bending portion and a second bending portion, and the bending directions of the first bending portion and the second bending portion are opposite.

As a preferable scheme of the invention, the bottom of the movable block is fixedly connected with a spring, and one end of the spring, which is far away from the movable block, is fixedly connected with the reaction tank.

Compared with the prior art, the invention has the advantages that:

(1) when in use, the aerator is started to convey oxygen to the aeration pipe from the supporting disc, the first rotating disc and the supporting tube in sequence, and finally the oxygen is output from the surface of the aeration pipe, because the aeration hole is positioned on the upper surface of the aeration pipe, the gas can move vertically upwards, the vertically upwards gas can pass through the gap between the filtering membranes, on one hand, the aeration efficiency is improved, on the other hand, when the gas passes through the gap, impurities on the surface of the filtering membrane can be taken away, the dirt on the surface of the filtering membrane can be cleaned without arranging a motor, the energy is saved, the cost is reduced, part of the gas is introduced into the guide pipe from the aeration pipe flow, and finally the gas is sprayed out from the outlet end of the guide pipe, because the outlet end of the guide pipe is aligned with the side wall of the first movable plate, the gas flow gives a lateral thrust to the first movable plate, under the action of the thrust, the aeration pipe rotates, and simultaneously, the first movable plate synchronously rotates along with the aeration pipe, so that water flow rotates, the rotating water flow can effectively prevent slurry from remaining on the surface of the filtering membrane, and the filtering effect is further improved;

(2) rotation drive stay tube of aeration pipe rotates, the rotation of stay tube drives first rotary disk and rotates, the rotation of first rotary disk drives the second bull stick and rotates, the rotation of second bull stick drives the second rotary disk and rotates, the rotation of second rotary disk drives the second extension board and rotates, the rotation of second extension board drives the stirring leaf and uses the second bull stick to rotate as the center, and simultaneously, under the effect of round pin axle and linkage plate, make the stirring leaf rotate with first bull stick as the center, the rotation of rivers with higher speed, improve rotatory rivers and erode the power to filtration membrane, through the mutually supporting between second spout and the second slider, under the effect of rotatory rivers, make filtration membrane take place vibrations, effectively prevent that mud from remaining on filtration membrane surface.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of an aeration zone in an embodiment of the present invention;

FIG. 3 is an enlarged view of the structure at B in FIG. 2 according to the present invention;

FIG. 4 is an enlarged view of the structure at C in FIG. 2 according to the present invention;

fig. 5 is an enlarged view of the structure at a in fig. 1 according to the present invention.

The reference numbers in the figures illustrate:

1. a membrane reaction zone; 2. an aeration zone; 3. an aerator; 4. a support disc; 5. a first rotating disk; 6. a reaction tank; 7. supporting a tube; 8. an aeration pipe; 9. an aeration hole; 10. a guide tube; 11. a first support plate; 12. a support bar; 13. a first movable plate; 14. a second rotating rod; 15. fixing the disc; 16. a second rotating disk; 17. a second support plate; 18. a support plate; 19. a first rotating lever; 20. stirring blades; 21. a pin shaft; 22. a connector tile; 23. a second movable plate; 24. turning the column; 25. a first slider; 26. a first chute; 27. a filtration membrane; 28. a support frame; 29. a groove; 30. a movable block; 31. an outer tube; 32. an inner rod; 33. a spring; 34. a second chute; 341. a first curved portion; 342. a second curved portion; 35. and a second slider.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

referring to fig. 1-2, an immersed flat membrane bioreactor assembly includes a reaction tank 6, a membrane reaction zone 1 is disposed in the reaction tank 6, a filtering membrane 27 is disposed in the membrane reaction zone 1, because the existing immersed flat membrane bioreactor is generally provided with an aeration pipe 8 disposed below the membrane assembly, the aeration pipe 8 can supply oxygen and gas can apply shearing force to the membrane surface to wash the membrane surface, but in this way, a layer of mud cake layer is still formed on the membrane surface during the treatment process, in order to prevent mud from remaining on the membrane in the prior art, a stirrer is generally used to stir sewage to make water in a stirring flowing state, so that the dirt remaining on the membrane surface can be avoided as much as possible to affect the later filtering effect, but the existing stirrer needs to be driven by a motor to increase the cost and waste power resources, energy is not saved enough, therefore, the aeration zone 2 is arranged below the membrane reaction zone 1, the aerator 3 is arranged in the aeration zone 2, the output end of the aerator 3 is fixedly connected with the supporting disk 4, the surface of the supporting disk 4 is rotationally connected with the first rotating disk 5, the surface of the first rotating disk 5 is symmetrically and fixedly connected with the supporting tube 7, the outlet end of the supporting tube 7 is communicated with the aeration tube 8, the inner cavity of the supporting disk 4, the inner cavity of the first rotating disk 5, the inner cavity of the supporting tube 7 and the inner cavity of the aeration tube 8 are communicated, the upper surface of the aeration tube 8 is provided with a plurality of aeration holes 9, when in use, the aerator 3 is started to convey oxygen to the aeration tube 8 from the supporting disk 4, the first rotating disk 5 and the supporting tube 7 in sequence, and finally the oxygen is output from the surface of the aeration tube 8, because the aeration holes 9 are positioned on the upper surface of the aeration tube 8, therefore, gas can move vertically upwards, and vertically upwards gas can pass through gaps between the filtering membranes 27, on the one hand, the efficiency of aeration is improved, and on the other hand, when gas passes through the gap, the impurity on the surface of the filtering membrane 27 can be taken away, the dirt on the surface of the filtering membrane 27 can be cleaned without arranging a motor, so that the cost is reduced while the energy is saved.

Referring to fig. 2-3, the aeration pipe 8 is circular, the side wall of the aeration pipe 8 is communicated with a guide pipe 10, the side wall of the aeration pipe 8 is symmetrically provided with first supporting plates 11, a supporting rod 12 is connected between the two first supporting plates 11, a first movable plate 13 is fixedly connected to the outer wall of the supporting rod 12, the outlet end of the guide pipe 10 is aligned with the side wall of the first movable plate 13, part of the gas flows into the guide pipe 10 from the aeration pipe 8 and is finally ejected out from the outlet end of the guide pipe 10, since the outlet end of the guide duct 10 is aligned with the side wall of the first flap 13, the air flow imparts a lateral thrust to the first flap 13, under the action of the thrust, the aeration pipe 8 rotates, and at the same time, the first movable plate 13 rotates synchronously with the aeration pipe 8, therefore, the water flow rotates, the rotating water flow can effectively prevent mud from remaining on the surface of the filtering membrane 27, and the filtering effect is further improved.

Referring to fig. 2, the inner wall of the aeration pipe 8 is rotatably connected with a fixed disc 15, the surface of the fixed disc 15 is fixedly connected with a support plate 18, the support plate 18 is fixedly connected with the reaction tank 6, the middle part of the fixed disc 15 is fixedly connected with a second rotating rod 14, the second rotating rod 14 penetrates through the fixed disc 15, and second bull stick 14 rotates with fixed disk 15 and is connected, the one end fixedly connected with second rotary disk 16 of second bull stick 14, the lateral wall fixedly connected with a plurality of second extension boards 17 of second rotary disk 16, the other end and the first rotary disk 5 fixed connection of second bull stick 14, the rotation of aeration pipe 8 drives the stay tube 7 and rotates, the rotation of stay tube 7 drives first rotary disk 5 and rotates, the rotation of first rotary disk 5 drives second bull stick 14 and rotates, the rotation of second bull stick 14 drives second rotary disk 16 and rotates, the rotation of second rotary disk 16 drives second extension board 17 and rotates.

Referring to fig. 4, a first rotating rod 19 is rotatably connected to the surface of the second support plate 17, stirring blades 20 are fixedly connected to the upper end of the first rotating rod 19, the number of the second support plates 17 is even, a connecting plate 22 is movably connected between adjacent stirring blades 20 through a pin 21, the rotation of the second support plate 17 drives the stirring blades 20 to rotate around the second rotating rod 14, and meanwhile, under the action of the pin 21 and the connecting plate 22, the stirring blades 20 rotate around the first rotating rod 19, so that the rotation of water flow is accelerated, and the scouring force of the rotating water flow on the filtering membrane 27 is improved.

Referring to fig. 4, the first rotating rod 19 penetrates through the second support plate 17, the lower end of the first rotating rod 19 is rotatably connected with the second movable plate 23, one end of the second movable plate 23, which is far away from the second support plate 17, is rotatably connected with the rotating column 24, the bottom of the rotating column 24 is fixedly connected with the first sliding block 25, the surface of the fixed disk 15 is provided with the first sliding groove 26, the first sliding block 25 is slidably connected in the first sliding groove 26, and the rotation of the stirring blade 20 is facilitated through the mutual matching between the first sliding groove 26 and the first sliding block 25.

Referring to fig. 5, grooves 29 are symmetrically formed in the inner wall of the reaction tank 6, movable blocks 30 are arranged in the grooves 29, a support frame 28 is installed on the outer wall of the filtering membrane 27, the support frame 28 is fixedly connected with the movable blocks 30, an outer tube 31 is fixedly connected in the grooves 29, an inner rod 32 is slidably connected in the outer tube 31, one end, away from the outer tube 31, of the inner rod 32 is fixedly connected with the movable blocks 30, and through mutual matching between the outer tube 31 and the inner rod 32, the filtering membrane 27 vibrates under the action of rotating water flow, so that slurry is effectively prevented from remaining on the surface of the filtering membrane 27.

Referring to fig. 5, the inner wall of the outer tube 31 is provided with a second sliding groove 34, the second sliding groove 34 is slidably connected with a second sliding block 35, the second sliding block 35 is fixedly connected with the inner rod 32, the second sliding groove 34 includes a first bending portion 341 and a second bending portion 342, the bending directions of the first bending portion 341 and the second bending portion 342 are opposite, the relative movement between the outer tube 31 and the inner rod 32 is facilitated by the mutual matching between the second sliding groove 34 and the second sliding block 35, and the filtering membrane 27 can be driven to vibrate when the second sliding block 35 moves in the second sliding groove 34 due to the limitation of the shape of the second sliding groove 34.

Referring to fig. 5, a spring 33 is fixedly connected to the bottom of the movable block 30, and one end of the spring 33, which is far away from the movable block 30, is fixedly connected to the reaction tank 6, so that the vibration of the filter membrane 27 is facilitated by the design of the spring 33.

The working principle of the embodiment is as follows:

when the aerator is used, the aerator 3 is started to output part of oxygen from the aeration holes 9, the aeration holes 9 are positioned on the upper surface of the aeration pipe 8, so that the gas can move vertically upwards, the vertically upwards gas can pass through gaps between the filter membranes 27, on one hand, the aeration efficiency is improved, on the other hand, when the gas passes through the gaps, impurities on the surfaces of the filter membranes 27 can be taken away, the other part of the oxygen is sprayed out from the outlet end of the guide pipe 10, the airflow provides a lateral thrust force for the first movable plate 13, the aeration pipe 8 rotates under the action of the thrust force, meanwhile, the first movable plate 13 synchronously rotates along with the aeration pipe 8, so that the water flow rotates, the rotating water flow can effectively prevent slurry from remaining on the surfaces of the filter membranes 27, the filtering effect is improved, meanwhile, the rotation of the aeration pipe 8 drives the second support plate 17 to rotate, the rotation of the second support plate 17 drives the stirring blades 20 to rotate by taking the second rotating rod 14 as the center, simultaneously, under the effect of round pin axle 21 and connection board 22, make stirring leaf 20 use first bull stick 19 to rotate as the center, the rotation of rivers accelerates, improve rotatory rivers and wash away the power to filtration membrane 27, through mutually supporting between second spout 34 and the second slider 35, under the effect of rotatory rivers, make filtration membrane 27 shake, effectively prevent mud to remain on filtration membrane 27 surface, need not to set up the dirt that the motor can clear up filtration membrane 27 surface, energy-conservation while, the cost is reduced.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the equivalent replacement or change according to the technical solution and the modified concept of the present invention should be covered by the scope of the present invention.

Claims

1. The utility model provides an submergence formula dull and stereotyped membrane bioreactor subassembly, includes reaction tank (6), be provided with membrane reaction district (1) in reaction tank (6), be provided with filtration membrane (27) in membrane reaction district (1), the below of membrane reaction district (1) is provided with aeration zone (2), its characterized in that: install aerator (3) in aeration zone (2), the output end fixedly connected with supporting disk (4) of aerator (3), the surface rotation of supporting disk (4) is connected with first rotary disk (5), the surperficial symmetry fixedly connected with stay tube (7) of first rotary disk (5), the exit end intercommunication of stay tube (7) has aeration pipe (8), supporting disk (4) inner chamber, first rotary disk (5) inner chamber, stay tube (7) inner chamber, aeration pipe (8) inner chamber link up each other, open the upper surface of aeration pipe (8) has a plurality of aeration holes (9).

2. The submerged flat sheet membrane bioreactor assembly of claim 1, wherein: the aerator is characterized in that the aerator pipe (8) is annular, the side wall of the aerator pipe (8) is communicated with a guide pipe (10), the side wall of the aerator pipe (8) is symmetrically provided with first support plates (11), a support rod (12) is connected between the two first support plates (11), a first movable plate (13) is fixedly connected to the outer wall of the support rod (12), and the outlet end of the guide pipe (10) is aligned to the side wall of the first movable plate (13).

3. The submerged flat sheet membrane bioreactor assembly of claim 2, wherein: the inner wall of aeration pipe (8) rotates and is connected with fixed disk (15), the fixed surface of fixed disk (15) is connected with backup pad (18), backup pad (18) and reaction tank (6) fixed connection, the middle part fixedly connected with second bull stick (14) of fixed disk (15), second bull stick (14) run through fixed disk (15), and second bull stick (14) rotate with fixed disk (15) and be connected, the one end fixedly connected with second rotary disk (16) of second bull stick (14), a plurality of second extension boards (17) of lateral wall fixedly connected with of second rotary disk (16), the other end and first rotary disk (5) fixed connection of second bull stick (14).

4. The submerged flat sheet membrane bioreactor assembly of claim 3, wherein: the surface of the second support plate (17) is rotatably connected with a first rotating rod (19), the upper end of the first rotating rod (19) is fixedly connected with stirring blades (20), the number of the second support plates (17) is even, and connecting plates (22) are movably connected between every two adjacent stirring blades (20) through pin shafts (21).

5. The submerged flat sheet membrane bioreactor assembly of claim 4, wherein: first bull stick (19) run through second extension board (17), the lower extreme of first bull stick (19) is rotated and is connected with second fly leaf (23), the one end that second extension board (17) were kept away from in second fly leaf (23) is rotated and is connected with rotary column (24), the first slider (25) of bottom fixedly connected with of rotary column (24), open on the surface of fixed disk (15) has first spout (26), first slider (25) sliding connection is in first spout (26).

6. The submerged flat sheet membrane bioreactor assembly of claim 1, wherein: the inner wall symmetry of reaction tank (6) is opened flutedly (29), be provided with movable block (30) in recess (29), carriage (28) are installed to the outer wall of filtration membrane (27), carriage (28) and movable block (30) fixed connection, fixedly connected with outer tube (31) in recess (29), outer tube (31) sliding connection has interior pole (32), the one end and the movable block (30) fixed connection of outer tube (31) are kept away from in interior pole (32).

7. The submerged flat sheet membrane bioreactor assembly of claim 6, wherein: the inner wall of the outer pipe (31) is provided with a second sliding groove (34), a second sliding block (35) is connected in the second sliding groove (34) in a sliding mode, the second sliding block (35) is fixedly connected with the inner rod (32), the second sliding groove (34) comprises a first bending portion (341) and a second bending portion (342), and the bending directions of the first bending portion (341) and the second bending portion (342) are opposite.

8. The submerged flat sheet membrane bioreactor assembly of claim 6, wherein: the bottom fixedly connected with spring (33) of movable block (30), one end and reaction tank (6) fixed connection that movable block (30) are kept away from in spring (33).