Internal circulation MBR (Membrane Biological Reactor) for sewage treatment

Abstract

The utility model provides a sewage treatment internal circulation MBR (Membrane Biological Reactor), which comprises a box body and two staggered membrane group units arranged in the box body, the two membrane group units are arranged on two sides of the box body, each membrane group unit comprises a mounting plate and a plurality of single membrane plates arranged on the mounting plate in a sliding manner, and the single membrane plates are arranged on the mounting plate in a sliding manner. A mounting plate is arranged in the box body, two first sliding rods are fixedly connected to the mounting plate, the two first sliding rods are jointly sleeved with an L-shaped plate, the L-shaped plate is used for limiting the multiple single-membrane plates, swing assemblies are arranged on the two sides of the box body, and the swing assemblies are used for driving the membrane module units to move so as to enhance the contact effect of the single-membrane bodies and sewage. According to the sewage treatment internal circulation MBR membrane biological reaction device provided by the utility model, due to the arrangement of the second sliding rods and the insertion holes, the membrane group units are more convenient to disassemble and assemble when being replaced or cleaned, and in addition, a single single membrane body can be directly disassembled, assembled and replaced in a non-stop state.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment devices, in particular to an internal circulation MBR membrane bioreactor device for sewage treatment. Background Art

[0002] MBR membrane bioreactor is a sewage treatment technology that combines membrane separation technology with traditional biological treatment processes. It uses membrane components to intercept activated sludge and suspended matter in sewage, thereby achieving mud-water separation. This technology can treat high-concentration sewage. Compared with traditional sewage treatment methods, it improves the removal effect of difficult-to-degrade substances. The MBR system can produce high-quality effluent with extremely low suspended matter and turbidity, and is suitable for occasions with high water quality requirements.

[0003] However, as the operation time increases, the performance of the membrane assembly may deteriorate due to dirt accumulation, biological fouling or chemical pollution. This pollution will lead to a decrease in membrane flux, an increase in transmembrane pressure, and ultimately affect the treatment effect. At this time, the membrane assembly often needs to be removed and cleaned. When the cleaning and maintenance costs of the membrane assembly are higher than the cost of replacing a new membrane assembly, the membrane assembly often needs to be replaced. Traditional MBR membrane biological reactors often remove the entire membrane group when replacing the membrane material, and traditional membrane components and frames are often connected by flanges or rotations. Therefore, both cleaning and replacing the membrane components are very cumbersome.

[0004] In view of this, an internal circulation MBR membrane bioreactor for sewage treatment is proposed. Utility Model Content

[0005] The utility model aims to solve the problem that it is very cumbersome to clean or replace membrane components of a traditional sewage treatment internal circulation MBR membrane bioreactor, and provides a sewage treatment internal circulation MBR membrane bioreactor.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: a sewage treatment internal circulation MBR membrane biological reactor device, comprising a box body and two staggered membrane group units arranged in the box body, the two membrane group units are arranged on both sides of the box body, the membrane group unit comprises a mounting plate and a plurality of single membrane plates slidably arranged on the mounting plate, two first sliding rods are fixedly connected to the mounting plate, and an L-shaped plate is jointly sleeved on the two first sliding rods, the L-shaped plate is used to limit the plurality of single membrane plates, and a swing assembly is provided on both sides of the box body, and the swing assembly is used to drive the membrane group unit to move to enhance the contact effect between the single membrane body and the sewage.

[0007] Preferably, the swing assembly includes an electric telescopic rod fixedly connected to the box body and a connecting block fixedly connected to the protruding end of the electric telescopic rod, the connecting block is fixedly connected to the mounting rod, the mounting rod is provided with a slot, two second sliding rods are slidingly provided in the slot, and two sockets adapted for the second sliding rods are provided on the mounting plate, and the second sliding rods are used to be inserted into the sockets to connect the membrane group unit and the swing assembly.

[0008] Preferably, the top of the first sliding rod is fixedly connected to a limit block with a diameter slightly larger than that of the first sliding rod, and the top of the mounting plate is fixedly connected to two first springs, one end of the two first springs is fixedly connected to the top of the mounting plate, and the other end of the two first springs is fixedly connected to the L-shaped plate.

[0009] Preferably, two second springs are fixedly connected to the top of the slot, and one end of the two second springs is fixedly connected to the top of the slot with an unlocking plate, and the unlocking plate is fixedly connected to the two second sliding rods. The unlocking plate is used to pull the rod out of the socket when pulled up to unlock the membrane group unit and the swing assembly.

[0010] Preferably, water inlets are provided at both ends of the box body, and a water outlet for discharging treated sewage and a sewage outlet for discharging impurities are provided at the bottom of the box body.

[0011] Preferably, a slider with a T-shaped cross section is fixedly connected to the top of the single membrane plate, and a plurality of sliding grooves with sizes matching those of the slider are provided on the mounting plate.

[0012] Preferably, when the L-shaped plate is at the initial position, it can just cover the sliding groove to limit the slider, and when the L-shaped plate is at the highest point, it can just expose the sliding groove to pull out the slider and the single membrane plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The sewage treatment internal circulation MBR membrane biological reactor provided by the utility model is provided with a second sliding rod and a socket, so that when the membrane group unit needs to be replaced or cleaned, the entire membrane group unit can be directly removed by pulling up the unlocking plate, thereby improving the convenience of disassembling and installing the membrane group unit;

[0015] 2. The sewage treatment internal circulation MBR membrane biological reactor provided by the utility model makes the connection between the single membrane plate and the mounting plate tighter and more convenient to disassemble and assemble by means of the slider and the L-shaped plate. This allows the device to be replaced in a targeted manner when the membrane flux of a single membrane plate decreases during subsequent use, and the single membrane body can also be directly replaced without stopping the device.

[0016] 3. The sewage treatment internal circulation MBR membrane bioreactor provided by the utility model is provided with a swing component, so that the membrane group unit can swing horizontally during use, thereby improving the contact effect between the single membrane plate and sewage. At the same time, it can also clean some biological fouling attached to the single membrane plate to a certain extent through the contact between the single membrane plates between the two membrane group units. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present utility model.

[0019] Figure 2 This is a bottom view of two membrane module units according to an embodiment of the present invention.

[0020] Figure 3 This is a detailed view of the top of the membrane group unit according to one embodiment of the present invention.

[0021] Figure 4 This is a detailed view from another angle of the top of the membrane module according to an embodiment of the present invention.

[0022] Figure 5 This is a schematic structural diagram of a swing assembly according to an embodiment of the present invention.

[0023] Figure 6 This is a schematic cross-sectional view of a slot and a mounting plate according to an embodiment of the present invention.

[0024] In the figure: 1. Box body, 11. Water inlet, 12. Water outlet, 13. Sewage outlet, 2. Membrane group unit, 21. Mounting plate, 22. Single membrane plate, 23. Slider, 24. Slide groove, 25. L-shaped plate, 26. First slide bar, 261. Limit block, 27. First spring, 3. Swing assembly, 31. Electric telescopic rod, 32. Connecting block, 33. Mounting rod, 34. Slot, 35. Second slide bar, 36. Second spring, 361. Unlocking plate, 37. Jack. DETAILED DESCRIPTION

[0025] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-6 .

[0027] The utility model discloses an internal circulation MBR membrane biological reactor for sewage treatment, comprising a box body 1 and two staggered membrane group units 2 arranged in the box body 1, the two membrane group units 2 being arranged on both sides of the box body 1, the membrane group unit 2 comprising a mounting plate 21 and a plurality of single membrane plates 22 slidingly arranged on the mounting plate 21, two first sliding rods 26 being fixedly connected to the mounting plate 21, an L-shaped plate 25 being jointly sleeved on the two first sliding rods 26, the L-shaped plate 25 being used to limit the plurality of single membrane plates 22, a swinging assembly 3 being provided on both sides of the box body 1, the swinging assembly 3 being used to drive the membrane group unit 2 to move so as to enhance the contact effect between the single membrane body and the sewage.

[0028] like Figure 2 As shown, the two membrane group units 2 are staggered, and the intervals between the single membrane plates 22 of two adjacent different membrane group units 2 are the same.

[0029] The swing assembly 3 includes an electric telescopic rod 31 fixedly connected to the housing 1 and a connecting block 32 fixedly connected to the protruding end of the electric telescopic rod 31. A mounting rod 33 is fixedly connected to the connecting block 32. The mounting rod 33 is provided with a slot 34, and two second slide rods 35 are slidably mounted within the slot 34. The mounting plate 21 has two sockets 37 that match the second slide rods 35. The second slide rods 35 are inserted into the sockets 37 to connect the membrane module 2 to the swing assembly 3. This arrangement enables the mounting plate 21 to connect with the slots 34, allowing the electric telescopic rod 31 to drive the entire membrane module 2 in horizontal movement.

[0030] Secondly, the top of the first slide bar 26 is fixedly connected with a limit block 261 whose diameter is slightly larger than the first slide bar 26, and the top of the mounting plate 21 is fixedly connected with two first springs 27, one end of the two first springs 27 is fixedly connected to the top of the mounting plate 21, and the other end of the two first springs 27 is fixedly connected to the L-shaped plate 25. The limit block 261 is used to prevent the L-shaped plate 25 from sliding off the first slide bar 26. The setting of the two first slide bars 26 can keep the L-shaped plate 25 stable.

[0031] Again, two second springs 36 are fixedly connected to the top of the slot 34, and one end of the two second springs 36 is fixedly connected to the top of the slot 34 with an unlocking plate 361, and the unlocking plate 361 is fixedly connected to the two second slide bars 35. The unlocking plate 361 is used to pull the rod out of the socket 37 when pulled up to unlock the membrane group unit 2 and the swing component 3. In the initial state, the two second slide bars 35 can connect the mounting plate 21 with the slot 34 through the socket 37, that is, to connect the membrane group unit 2 and the swing component 3.

[0032] like Figure 1 As shown, water inlets 11 are provided at both ends of the box body 1, and a water outlet 12 for discharging treated sewage and a sewage outlet 13 for discharging impurities are provided at the bottom of the box body 1. During operation, when one of the water inlets 11 is opened, the other water inlet 11 should be closed.

[0033] In addition, a slider 23 with a T-shaped cross-section is fixedly connected to the top of the single membrane plate 22, and a plurality of slide grooves 24 with sizes matching the slider 23 are provided on the mounting plate 21, so that the single membrane plate 22 can be quickly disassembled or installed relative to the entire membrane group.

[0034] Furthermore, when the L-shaped plate 25 is in the initial position, it can just cover the slide groove 24 to limit the slider 23. When the L-shaped plate 25 is at the highest point, it can just expose the slide groove 24 to pull out the slider 23 and the single membrane plate 22. That is to say, the L-shaped plate 25 can clamp the slider 23 in the initial state, and when the L-shaped plate 25 is pulled up, the slider 23 and the single membrane plate 22 can be directly removed or installed.

[0035] It should be noted that, in actual use, the two electric telescopic rods 31 can be started at the same time to make the two membrane group units 2 swing in the horizontal direction. The maximum swing distance should be half of the spacing between the single membrane plates 22 of the two different membrane group units 2. The swinging of the membrane group unit 2 can make the single membrane plate 22 more fully contact with the sewage at different positions. When the single membrane plates 22 of two different membrane group units 2 are in contact with each other, some biological fouling attached to the single membrane plates 22 can also be cleaned.

[0036] It will be apparent 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 considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced within the present invention.

Claims

1. A sewage treatment internal circulation MBR membrane bioreactor, characterized by: The invention comprises a box body (1) and two staggered membrane group units (2) arranged in the box body (1), wherein the two membrane group units (2) are arranged on both sides of the box body (1), and the membrane group units (2) comprise a mounting plate (21) and a plurality of single membrane plates (22) slidably arranged on the mounting plate (21), wherein two first sliding rods (26) are fixedly connected to the mounting plate (21), and an L-shaped plate (25) is commonly sleeved on the two first sliding rods (26), and the L-shaped plate (25) is used to limit the plurality of single membrane plates (22), and a swinging assembly (3) is provided on both sides of the box body (1), and the swinging assembly (3) is used to drive the membrane group unit (2) to move so as to enhance the contact effect between the single membrane body and sewage.

2. The sewage treatment internal circulation MBR membrane bioreactor according to claim 1, characterized in that: The swing assembly (3) comprises an electric telescopic rod (31) fixedly connected to the box body (1) and a connecting block (32) fixedly connected to the protruding end of the electric telescopic rod (31); a mounting rod (33) is fixedly connected to the connecting block (32); a slot (34) is provided on the mounting rod (33); two second slide rods (35) are slidably provided in the slot (34); two sockets (37) adapted to the second slide rods (35) are provided on the mounting plate (21); the second slide rods (35) are used to be inserted into the sockets (37) to connect the membrane group unit (2) and the swing assembly (3).

3. The sewage treatment internal circulation MBR membrane bioreactor according to claim 2, characterized in that: A limit block (261) having a diameter slightly larger than that of the first slide bar (26) is fixedly connected to the top of the first slide bar (26), and two first springs (27) are fixedly connected to the top of the mounting plate (21), one end of the two first springs (27) is fixedly connected to the top of the mounting plate (21), and the other end of the two first springs (27) is fixedly connected to the L-shaped plate (25).

4. The sewage treatment internal circulation MBR membrane bioreactor according to claim 3, characterized in that: Two second springs (36) are fixedly connected to the top of the slot (34); one end of the two second springs (36) and the top of the slot (34) are fixedly connected to an unlocking plate (361); the unlocking plate (361) is fixedly connected to the two second sliding rods (35); the unlocking plate (361) is used to pull the rod out of the socket (37) when pulled up to unlock the membrane group unit (2) and the swing assembly (3).

5. The sewage treatment internal circulation MBR membrane bioreactor according to claim 4, characterized in that: Both ends of the box body (1) are provided with water inlets (11), and the bottom of the box body (1) is provided with a water outlet (12) for discharging treated sewage and a sewage outlet (13) for discharging impurities.

6. The sewage treatment internal circulation MBR membrane bioreactor according to claim 5, characterized in that: A slider (23) with a T-shaped cross section is fixedly connected to the top of the single membrane plate (22), and a plurality of slide grooves (24) with sizes matching those of the slider (23) are provided on the mounting plate (21).

7. The sewage treatment internal circulation MBR membrane bioreactor according to claim 6, characterized in that: When the L-shaped plate (25) is located at the initial position, it can just cover the sliding groove (24) to limit the sliding block (23); when the L-shaped plate (25) is located at the highest point, it can just expose the sliding groove (24) to pull out the sliding block (23) and the single membrane plate (22).

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