Membrane bioreactor with splicing structure

Abstract

The utility model discloses a membrane bioreactor with a splicing structure, relates to the related field of membrane bioreactors, and aims to solve the problems that fixing bolts of membrane bodies need to be disassembled one by one when the membrane bodies are replaced at present, the operation time is relatively long when the membrane bodies need to be replaced in a large scale, and new membrane bodies are not convenient to splice and assemble on a bracket; and the replacement of the membrane body is not facilitated. The membrane body placing support comprises a lower supporting table and an upper fixing frame, upper step inner edges are arranged at the lower ends of the two sides of the upper fixing frame, an aeration tank is formed in the upper end face of the lower supporting table, and lower step inner edges are fixed to the upper ends of the two sides of the aeration tank; placing hole grooves and rectangular hole grooves are formed in the inner sides of the upper end faces of the inner edge of the upper step and the inner edge of the lower step at equal intervals from front to back, the placing hole grooves are located in the lower ends of the rectangular hole grooves and internally communicated, side open grooves are formed in the end faces of the upper fixing frame along the two ends of the inner edge of the upper step, and upper fixing plates are arranged on the two sides of the upper end of the upper fixing frame.

Description

Technical Field

[0001] The utility model relates to the relevant field of membrane bioreactors, in particular to a membrane bioreactor with a splicing structure. Background Art

[0002] Wastewater treatment and reuse are effective measures to develop and utilize water resources. Wastewater reuse is to treat urban sewage and industrial sewage through membrane bioreactors and other equipment, and then use them for non-drinking purposes such as greening, flushing, and replenishing ornamental water bodies, while using clean water for drinking and other purposes with high water quality requirements. Urban sewage and industrial sewage are available nearby, which can avoid long-distance water transportation and achieve local treatment to fully utilize water resources. At the same time, local treatment of sewage can also prevent sewage leakage during long-distance transportation, leading to groundwater pollution.

[0003] Membrane bioreactor is a new type of wastewater treatment system that organically combines membrane separation technology with biological treatment technology. The membrane components replace the terminal secondary sedimentation tank of traditional biological treatment technology, maintain a high concentration of activated sludge in the bioreactor, increase the organic load of biological treatment, thereby reducing the footprint of sewage treatment facilities and reducing the amount of residual sludge by maintaining a low sludge load. The membrane separation equipment is mainly used to intercept the activated sludge and macromolecular organic matter in the water. The concentration of activated sludge (MLSS) in the membrane bioreactor system can be increased to 8000~10,000mg / L, or even higher; the sludge age (SRT) can be extended to more than 30 days.

[0004] Since the membrane body of the membrane bioreactor intercepts flow for a long time, it is easy to age and lose its effect and needs to be replaced. However, when replacing the membrane body, the fixing bolts of the membrane body need to be removed one by one. When the membrane body needs to be replaced in batches, the operation time is long, and the new membrane body is not conducive to splicing and assembling onto the bracket, which is not conducive to the replacement of the membrane body. Utility Model Content

[0005] The purpose of the utility model is to provide a membrane bioreactor with a splicing structure to solve the problems raised in the above-mentioned background technology that the fixing bolts of the membrane body need to be disassembled one by one when the membrane body is replaced, the operation time is long when the membrane body needs to be replaced in batches, and the new membrane body is not conducive to splicing and assembling onto the bracket, which is not conducive to the replacement of the membrane body.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a membrane bioreactor with a splicing structure, comprising a membrane body placement bracket, the membrane body placement bracket comprising a lower support platform and an upper fixed frame, upper step inner edges are arranged at the lower ends of both sides of the upper fixed frame, an aeration tank is opened on the upper surface of the lower support platform, lower step inner edges are fixed at the upper ends of both sides of the aeration tank, placement slots and rectangular slots are opened equidistantly from front to back on the inner sides of the upper end surfaces of the upper step inner edges and the lower step inner edges, and the placement slots are located at The lower end of the rectangular hole groove is connected internally, and side grooves are opened at both ends of the end surface of the upper fixed frame along the inner edge of the upper step. Upper fixed plates are arranged on both sides of the upper end of the upper fixed frame. The upper fixed plate includes a plate body, and the upper ends of the two side grooves on each side are embedded in the plate body of the upper fixed plate. A lower embedded block is fixed at the lower end of the plate body from front to back, and the lower embedded block is embedded in the rectangular hole groove at the lower end. The lower end surface of the lower embedded block forms a curved pressing surface, and the curved pressing surface has the same diameter as the placement hole groove.

[0007] Preferably, placement blocks are fixed at both ends of the inner edge of the upper step, the placement blocks are clamped in the side slots, and the upper fixing frame, the placement blocks and the upper fixing plate are fixed by fixing screws.

[0008] Preferably, support plates are welded and fixed at the four corners between the lower supporting platform and the upper fixed frame, and membrane assemblies are equidistantly arranged between the lower supporting platform and the upper fixed frame from front to back.

[0009] Preferably, the membrane assembly is composed of an upper fixing rod, a membrane body and a lower fixing rod, which are arranged from top to bottom, and side support columns are fixed on both sides of the upper fixing rod and the lower fixing rod, and the diameter of the side support columns is the same as the diameter of the arc surface pressing surface and the placement hole groove, and the side support columns are clamped between the arc surface pressing surface and the placement hole groove.

[0010] Preferably, a gas inlet pipe is installed at the lower end of one side of the lower support platform along one side of the aeration tank, and a plurality of aeration branch pipes are connected to the other end of the gas inlet pipe inside the aeration tank through a longitudinal pipe. The aeration branch pipes are located between two adjacent membrane body assemblies, and aeration holes are equidistantly provided on the aeration branch pipes.

[0011] Preferably, the lower ends of the front and rear ends of the lower support platform are integrally connected with side extension plates, the upper ends of the side extension plates are fixedly connected with fixed C-shaped plates, and the fixed C-shaped plates are provided with mounting page plates fixed to the reaction tank.

[0012] Preferably, a drainage pipe is installed in the middle of the upper end of the upper fixing rod of the membrane assembly.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, when the main body of the membrane needs to be replaced, unscrew the fixing screws, remove the upper fixing plate upwards through the side slots, and then expose the placement hole slots and the upper ends of the rectangular hole slots. Remove the flange connected to the drain pipe, lift the membrane assembly upwards, so that the upper fixing rod and the membrane main body are separated from the membrane placement bracket, and then lift the membrane assembly upwards while tilting the lower fixing rod, so that this part of the membrane assembly is taken out; repeat until all the membrane assemblies that need to be replaced are taken out. When splicing a new membrane assembly, tilt the membrane assembly so that it enters the membrane placement bracket, so that the side support columns on both sides of the upper fixing rod and the lower fixing rod are respectively stuck in the placement hole slots of the inner edge of the upper step and the inner edge of the lower step, insert the upper fixing plate along the side slots, and embed the lower embedding block into the rectangular hole slot, and then fix it with fixing screws, and press the side support columns with the arc surface. The entire disassembly and installation process does not require tightening the fixing bolts one by one, but instead uses the upper fixing plate to compress and fix the entire body, which greatly reduces the intermediate operation time. This solves the problem that the fixing bolts of the membrane body need to be disassembled one by one when replacing the membrane body, the operation time is long when a large number of membrane bodies need to be replaced, and the new membrane body is not conducive to splicing and assembling onto the bracket, which is not conducive to replacement of the membrane body.

[0015] 2. In the utility model, during use, the external blower introduces gas into the aeration branch pipe through the gas inlet pipe, and the gas overflows through the aeration holes on the aeration branch pipe, so that the internal sewage water body is in a flowing state, and the filtered activated sludge is in contact with the water body more completely. When cleaning is required, the turbidity in the water body or the small bubbles formed by the impurities attached to the membrane body are brought to the liquid surface by the gas. The introduction of gas makes the sewage filtration efficiency higher and facilitates the cleaning of the membrane body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a membrane bioreactor with a splicing structure according to the utility model;

[0017] Figure 2 This is a schematic structural diagram of a membrane bioreactor with a spliced ​​structure according to the utility model after removing the membrane body assembly;

[0018] Figure 3 It is a schematic diagram of the connection structure of the inner edge of the upper step and the upper fixing plate of a membrane bioreactor with a splicing structure of the utility model;

[0019] Figure 4 It is an enlarged view of the structure at A of a membrane bioreactor with a splicing structure of the utility model;

[0020] Figure 5 It is a structural schematic diagram of a membrane body assembly of a membrane bioreactor with a splicing structure according to the utility model.

[0021] In the figure: 1. membrane body placement bracket; 2. lower support platform; 3. side extension plate; 4. fixed C-shaped plate; 5. aeration tank; 6. gas inlet pipe; 7. aeration branch pipe; 8. aeration hole; 9. support plate; 10. upper fixing frame; 11. inner edge of upper step; 12. inner edge of lower step; 13. placement hole slot; 14. rectangular hole slot; 15. side slot; 16. placement block; 17. upper fixing plate; 18. plate body; 19. lower embedded block; 20. arc surface pressing surface; 21. fixing screw; 22. membrane body assembly; 23. upper fixing rod; 24. membrane body; 25. lower fixing rod; 26. side support column; 27. drainage pipe. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] See also Figure 1-5 The utility model provides an embodiment: a membrane bioreactor with a splicing structure, including a membrane body placement bracket 1, the membrane body placement bracket 1 includes a lower support platform 2 and an upper fixed frame 10, support plates 9 are welded and fixed at the four corners between the lower support platform 2 and the upper fixed frame 10, and the lower ends of the front and rear ends of the lower support platform 2 are integrally connected with side extension plates 3, and the upper ends of the side extension plates 3 are fixedly connected with fixed C-shaped plates 4. The fixed C-shaped plates 4 are provided with mounting page plates fixed to the reaction tank, which are fixed to the pool wall of the reaction tank to maintain the stability of the membrane bioreactor itself.

[0024] A membrane assembly 22 is equidistantly arranged between the lower support platform 2 and the upper fixed frame 10 from front to back. The membrane assembly 22 is composed of an upper fixed rod 23, a membrane body 24 and a lower fixed rod 25. The upper fixed rod 23, the membrane body 24 and the lower fixed rod 25 are arranged from top to bottom. A drainage pipe 27 is installed in the middle of the upper end of the upper fixed rod 23 of the membrane assembly 22, and the other ends of the plurality of drainage pipes 27 are connected to a drainage main pipe.

[0025] The water flows through the membrane body 24 of the membrane assembly 22 into the interior of the membrane body 24 and is discharged through the drainage pipe 27. The multiple drainage pipes 27 are finally connected to the drainage main pipe, and this part of the water is reused after being treated.

[0026] An aeration tank 5 is provided on the upper end surface of the lower support platform 2, and a gas inlet pipe 6 is installed on the lower end of one side of the lower support platform 2 along one side of the aeration tank 5. A plurality of aeration branch pipes 7 are connected to the other end of the gas inlet pipe 6 inside the aeration tank 5 through a longitudinal pipe. The aeration branch pipe 7 is located between two adjacent membrane assemblies 22. Aeration holes 8 are equidistantly provided on the aeration branch pipe 7. In order to prevent sewage from entering the aeration branch pipe 7 and affecting the exhaust, a one-way exhaust structure can be installed.

[0027] During use, the external blower introduces gas into the aeration branch pipe 7 through the gas inlet pipe 6, and the gas overflows through the aeration holes 8 on the aeration branch pipe 7, so that the internal sewage water body is in a flowing state and the filtered activated sludge is in contact with the water body more completely. When cleaning is required, the turbidity in the water body or the impurities adhered to the membrane body 24 are brought to the liquid surface by the gas and cleaned.

[0028] The upper fixed frame 10 is provided with an upper step inner edge 11 at the lower end of both sides, and the aeration tank 5 is fixed with a lower step inner edge 12 at the upper end. The inner sides of the upper step inner edge 11 and the lower step inner edge 12 are provided with placement slots 13 and rectangular slots 14 at equal distances from front to back. The placement slots 13 are located at the lower end of the rectangular slots 14 and are internally connected. The end surface of the upper fixed frame 10 is provided with side slots 15 at both ends of the upper step inner edge 11. The upper fixed frame 10 is provided with an upper fixed inner edge 12 at both sides of the upper end. Plate 17, upper fixed plate 17 includes plate body 18, upper ends of two side slots 15 on each side are embedded in plate body 18 of upper fixed plate 17, lower end of plate body 18 is fixed with lower embedded block 19 from front to back, upper end surface of upper step inner edge 11 is fitted with lower end surface of folded angle of lower embedded block 19, lower embedded block 19 is embedded in lower rectangular hole 14, lower end surface of lower embedded block 19 forms arc surface pressing surface 20, arc surface pressing surface 20 has the same diameter as placement hole 13. Placement blocks 16 are fixed at both ends of upper step inner edge 11, placement blocks 16 are stuck in side slots 15, upper fixed frame 10, placement blocks 16 and upper fixed plate 17 are fixed by fixing screws 21.

[0029] Side support columns 26 are fixed on both sides of the upper fixing rod 23 and the lower fixing rod 25 . The diameter of the side support columns 26 is the same as the diameter of the arc surface pressing surface 20 and the placement hole groove 13 . The side support columns 26 are clamped between the arc surface pressing surface 20 and the placement hole groove 13 .

[0030] When the membrane body 24 needs to be replaced, unscrew the fixing screws 21, remove the upper fixing plate 17 upwards through the side slot 15, and then expose the upper ends of the placement slots 13 and the rectangular slots 14. Remove the flange connected to the drain pipe 27, lift the membrane assembly 22 upwards, so that the upper fixing rod 23 and the membrane body 24 are separated from the membrane placement bracket 1, and then lift the membrane assembly 22 upwards while tilting the lower fixing rod 25, so that this part of the membrane assembly 22 can be taken out; repeat until all the membrane assemblies 22 that need to be replaced are taken out. When splicing a new membrane assembly 22, tilt the membrane assembly 22 to allow it to enter the membrane placement bracket 1, so that the side support columns 26 on both sides of the upper fixing rod 23 and the lower fixing rod 25 are respectively stuck in the placement holes 13 of the upper step inner edge 11 and the lower step inner edge 12, and the upper fixing plate 17 is placed along the side slot 15, and the lower embedded block 19 is embedded in the rectangular hole 14, and then fixed with the fixing screws 21, and the arc surface pressing surface 20 presses the side support column 26. Finally, the flange of the drain pipe 27 is connected to re-participate in the sewage treatment process.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A membrane bioreactor with a spliced ​​structure, comprising a membrane placement support (1), characterized in that: The membrane placement bracket (1) comprises a lower support platform (2) and an upper fixed frame (10), the lower ends of both sides of the upper fixed frame (10) are provided with upper step inner edges (11), the upper end surface of the lower support platform (2) is provided with an aeration tank (5), the upper ends of both sides of the aeration tank (5) are fixed with lower step inner edges (12), the inner sides of the upper end surfaces of the upper step inner edges (11) and the lower step inner edges (12) are provided with placement slots (13) and rectangular slots (14) equidistantly from front to back, the placement slots (13) are located at the lower ends of the rectangular slots (14) and are internally connected, and the end surface position of the upper fixed frame (10) is along the upper step inner edges (11). Side slots (15) are provided at both ends of the edge (11), and upper fixing plates (17) are provided on both sides of the upper end of the upper fixing frame (10). The upper fixing plate (17) includes a plate body (18), and the upper ends of the two side slots (15) on each side are embedded in the plate body (18) of the upper fixing plate (17). A lower embedding block (19) is fixed to the lower end of the plate body (18) from front to back, and the lower embedding block (19) is embedded in the rectangular hole groove (14) at the lower end. The lower end surface of the lower embedding block (19) forms a curved pressing surface (20), and the curved pressing surface (20) has the same diameter as the placement hole groove (13).

2. A membrane bioreactor with a splicing structure according to claim 1, characterized in that: Placement blocks (16) are fixed at both ends of the inner edge (11) of the upper step. The placement blocks (16) are clamped in the side slots (15). The upper fixing frame (10), the placement blocks (16) and the upper fixing plate (17) are fixed by fixing screws (21).

3. The membrane bioreactor with a splicing structure according to claim 1, characterized in that: Support plates (9) are welded and fixed at the four corners between the lower support platform (2) and the upper fixed frame (10), and membrane components (22) are arranged equidistantly from front to back between the lower support platform (2) and the upper fixed frame (10).

4. The membrane bioreactor with a splicing structure according to claim 3, characterized in that: The membrane assembly (22) is composed of an upper fixing rod (23), a membrane body (24) and a lower fixing rod (25), wherein the upper fixing rod (23), the membrane body (24) and the lower fixing rod (25) are arranged from top to bottom, and side support columns (26) are fixed on both sides of the upper fixing rod (23) and the lower fixing rod (25), wherein the diameter of the side support columns (26) is the same as the diameter of the arc surface pressing surface (20) and the placement hole groove (13), and the side support columns (26) are clamped between the arc surface pressing surface (20) and the placement hole groove (13).

5. The membrane bioreactor with a splicing structure according to claim 3, characterized in that: A gas inlet pipe (6) is installed at the lower end of one side of the lower support platform (2) along one side of the aeration tank (5); a plurality of aeration branch pipes (7) are connected to the other end of the gas inlet pipe (6) inside the aeration tank (5) via longitudinal pipes; the aeration branch pipes (7) are located between two adjacent membrane assemblies (22); and aeration holes (8) are equidistantly provided on the aeration branch pipes (7).

6. The membrane bioreactor with a splicing structure according to claim 1, characterized in that: The lower ends of the front and rear ends of the lower support platform (2) are integrally connected to side extension plates (3), the upper ends of the side extension plates (3) are fixedly connected to fixed C-shaped plates (4), and the fixed C-shaped plates (4) are provided with mounting leaf plates fixed to the reaction tank.

7. The membrane bioreactor with a splicing structure according to claim 4, characterized in that: A drainage pipe (27) is installed in the middle of the upper end of the upper fixing rod (23) of the membrane assembly (22).

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