A treatment device for microbial filtration membrane sewage

Abstract

The present invention relates to the technical field of sewage treatment equipment, specifically a treatment equipment for microbial filtration membrane sewage, comprising a sewage pool, a membrane plate, a manifold and a water collection pipe; the membrane plates are installed at equal intervals in the sewage pool, and the membrane plates are fixedly installed with a water collection pipe, and the plurality of membrane plates are connected to the manifold through the water collection pipe, and the manifold is externally connected to a pumping device; the present invention also includes a convenient oxygen supply mechanism, and the convenient oxygen supply mechanism improves the oxygen supply efficiency by adjusting the gap between the membrane plates. The present invention changes the installation method of the membrane plate in the membrane frame by setting a convenient oxygen supply mechanism. When performing aeration and oxygen supply operations, the rotation of the swivel is used to switch the position of the membrane plate, causing the narrow gap between the membrane plates to expand, thereby facilitating the gas-liquid flow formed by aeration to flush the sludge in the gap, and promoting the dispersion of sludge and oxygen in the sewage.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment equipment, in particular to a treatment device for microbial filtration membrane sewage. Background Art

[0002] MBR (membrane bioreactor) is a highly efficient wastewater treatment process that combines membrane separation technology with biological treatment technology. Its core structure includes a submerged membrane structure, an aeration system, and a biological reaction zone. The membrane structure typically uses a hollow fiber membrane or a flat membrane structure with a pore size range of 0.1-0.4 microns, which can effectively intercept activated sludge and large organic molecules.

[0003] When the MBR membrane group is in use, it needs to work in conjunction with activated sludge to enhance the purification effect of sewage. Since the membrane plates in the MBR membrane group are arranged compactly, during long-term operation, the sludge follows the water flow into the gaps of the MBR membrane group, which not only affects the flow of sewage into the gaps between the membrane plates, but also because the gaps in the MBR membrane group are small, the flow efficiency of the sludge in the gaps of the MBR is reduced, making it inconvenient for this part of the sludge to participate in sewage purification. At the same time, if the residence time is too long, it is easy to cause hypoxia of the microorganisms in the sludge, which in turn causes the inactivation of the activated sludge.

[0004] In order to improve the above situation, the related technology discloses an energy-saving and non-clogging trough aeration MBR membrane module, with the announcement number CN118307131B. In this scheme, a membrane mechanism and an aeration mechanism are set up, and the bubbles generated by aeration are used to flush the sludge in the gaps of the MBR membrane group. The flushing not only promotes the sludge to participate in sewage purification, but also provides oxygen for the sludge.

[0005] Another example is an MBR membrane aerator, an MBR membrane aeration device, and an MBR membrane sewage treatment equipment disclosed in a related patent, with the announcement number CN110563131B. This patent also uses the bubbles generated by the aeration equipment in conjunction with the airflow guiding equipment to flush the gaps between the membrane plates, thereby achieving the flushing of the MBR membrane group sludge and the replenishment of oxygen.

[0006] However, in actual application, it was found that although the addition of aeration equipment can enhance the sludge discharge efficiency in the MBR membrane group, due to the small gap between the MBR membrane group, when the liquid flow velocity formed by the mixture of aeration bubbles and water is slow, the sludge flushing efficiency is poor. When the mixed liquid flow velocity is fast and the impact force is strong, it is easy to cause damage to the membrane plate, and the MBR membrane plate is difficult to disassemble. Therefore, the application effect of the MBR membrane group in the treatment of sewage with a high solid content is not ideal. Summary of the Invention

[0007] The purpose of the present invention is to make up for the deficiencies of the prior art and to propose a treatment device for microbial filtration membrane wastewater.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: a treatment device for microbial filtration membrane wastewater, comprising a sewage tank, a membrane plate, a manifold and a water collection pipe;

[0009] The membrane plates are installed in the sewage pool at equal intervals, and a water collecting pipe is fixedly installed on each membrane plate. The plurality of membrane plates are connected to a manifold through the water collecting pipe, and the manifold is externally connected to a pumping device;

[0010] It also includes a convenient oxygen supply mechanism, which improves oxygen supply efficiency by adjusting the gap between the membrane plates. The convenient oxygen supply mechanism includes a membrane frame, a rotating ring, a connecting rod and an aeration pipe group;

[0011] The membrane frame is a frame-type structure, and the membrane frame is designed in a U shape as a whole. The manifold is fixedly installed on one side of the membrane frame, and the membrane plates are installed in the membrane frame at equal intervals.

[0012] The manifold is rotatably mounted with evenly distributed swivels, and the diaphragms are fixedly mounted with connecting rods, which are fixedly connected to the swivels.

[0013] The water collecting pipe is penetrated at one end away from the membrane plate and fixedly mounted on the swivel, and a docking hole is provided on the manifold;

[0014] The aeration tube group is installed below the membrane plate, and the aeration tube group is externally connected to an aeration device;

[0015] It also includes a step-by-step lifting and rotating mechanism, which cooperates with the convenient oxygen supply mechanism to lift the membrane plate step by step, thereby gradually expanding the gap in the membrane frame.

[0016] Preferably, in the initial state, the water collecting pipe is aligned with the docking hole and is connected, a telescopic groove is provided on the rotating ring, an elastic sealing ring is installed in the telescopic groove, and the water collecting pipe extends to the inner side of the elastic sealing ring.

[0017] Preferably, the step-by-step lifting and rotating mechanism includes a mounting seat, a driving motor, a driving gear, a transmission rod and a guide screw;

[0018] A mounting seat is installed on the film frame, and a driving motor is fixedly installed on the mounting seat;

[0019] A transmission rod and a guide screw are rotatably mounted in parallel on the mounting seat, the output end of the drive motor is fixedly connected to the transmission rod, and the transmission rod is connected to the guide screw with a transmission belt;

[0020] The transmission rod and the guide screw are both provided with a sliding seat, the sliding seat is slidably connected to the transmission rod and is helically driven by the guide screw;

[0021] A driving gear is rotatably mounted on the slide, the transmission rod is connected to the driving gear through a transmission member, the rotating ring is designed as an incomplete gear, and the driving gear is meshed with the rotating ring.

[0022] Preferably, the number of the slides is two, the driving gears on the two slides rotate in opposite directions, and the driving gear located at the front end in the moving direction drives the rotating ring to rotate in the direction close to the partition box.

[0023] Preferably, an adjusting rod is fixedly installed between the two slide seats, and the adjusting rod is an adjustable telescopic rod.

[0024] Preferably, a partition box is detachably mounted on one side of the slide seat, and the top of the partition box is designed to be open.

[0025] Preferably, a lifting groove is provided on the membrane frame, a lifting rod is slidably installed in the lifting groove, and the mounting seat is fixedly installed on the top of the lifting rod. When the lifting rod is located at the bottom of the lifting groove, the driving gear is engaged with the rotating ring, and the drainage buoyancy of the partition box is greater than the total gravity of the step-by-step lifting rotating mechanism and the partition box.

[0026] Preferably, a support plate is fixedly installed between two adjacent slides, and the support plate is composed of a wavy spring metal sheet. When the diaphragm is fully rotated, the corresponding connecting rod is located on the moving path of the support plate.

[0027] Preferably, brushes are fixedly mounted on both sides of the diaphragm, and when two adjacent diaphragms rotate relative to each other, the brushes are in frictional contact with the diaphragms.

[0028] Preferably, the brush pieces are all L-shaped, arranged along the edge of the membrane plate, and the brush pieces on the side of the membrane plate close to each other are staggered.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] First, the present invention provides a convenient oxygen supply mechanism and changes the installation method of the membrane plates in the membrane frame. When the aeration and oxygen supply operation is carried out, the rotation of the swivel is used to switch the position of the membrane plates, so that the narrow gaps between the membrane plates are widened, thereby facilitating the gas-liquid flow generated by aeration to flush the sludge in the gaps, thereby promoting the dispersion of the sludge in the sewage. In addition, since the membrane plates reset themselves after rotation and the number of membrane plates in the rotating state at the same time is limited, the continuous operation of the MBR membrane group is less affected.

[0031] Second, the present invention controls the rotation rate of the drive motor, adjusts the sliding rate of the slide and the rotation rate of the drive gear, so that the interval time between the membrane plate being lifted and reset is controllable, thereby facilitating the staff to select the appropriate aeration and oxygen supply time.

[0032] 3. The present invention supports the diaphragm plate through the support plate, so that when the support plate moves with the slide, it pushes the rotating diaphragm plate to produce a small rotation ring, and the diaphragm plate moves up and down, so that the relative movement effect of the two adjacent diaphragm plates is enhanced. In conjunction with the brush, the sludge on the surface of the diaphragm plate is pushed, and in conjunction with the action of the water flow, the sludge is dispersed in the sewage. At the same time, the up and down fluctuation of the diaphragm plate also has a pushing effect on the sewage, which enhances the flow effect of the sewage and further enhances the dispersion effect of the sludge in the sewage.

[0033] Other advantages, objects and features of the present invention will be described in part in the following description and, in part, will be apparent to those skilled in the art based on an examination of the following or may be learned from the practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the installation of the present invention in a sewage tank;

[0035] Figure 2 A perspective view of the present invention;

[0036] Figure 3 It is a three-dimensional diagram of the present invention in a state of gradual lifting and rotation;

[0037] Figure 4 This is a schematic diagram of the assembly of the membrane frame and the manifold;

[0038] Figure 5 This is a schematic diagram of the assembly of the diaphragm, swivel and connecting rod;

[0039] Figure 6 is a cross-sectional view of the swivel;

[0040] Figure 7 It is a schematic diagram of the assembly of the partition box and the step-by-step lifting and rotating mechanism;

[0041] Figure 8 It is a partial structural stereogram of the step-by-step lifting and rotating mechanism;

[0042] In the figure: 1. Membrane plate; 11. Water collecting pipe; 12. Confluence pipe; 2. Membrane frame; 21. Swivel; 22. Connecting rod; 23. Partition box; 24. Telescopic slot; 25. Elastic sealing ring; 26. Docking hole; 27. Aeration tube group; 3. Mounting seat; 31. Drive motor; 32. Transmission rod; 33. Guide screw; 35. Slide; 36. Drive gear; 37. Adjustment rod; 4. Lifting slot; 41. Lifting rod; 42. Support plate; 43. Brush. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] See also Figures 1-8 As shown, the present invention provides the following embodiments: a treatment device for microbial filtration membrane sewage, comprising a sewage tank, a membrane plate 1, a manifold 12 and a water collection pipe 11;

[0045] The membrane plates 1 are installed in the sewage tank at equal intervals. In the present invention, the membrane plates 1 are composed of a membrane and a plate frame, wherein the membrane plates are preferably flat membranes, hollow fiber membranes or tubular membranes. In this embodiment, the membrane plates are flat membranes. A water collecting pipe 11 is fixedly installed on each of the membrane plates 1. The water collecting pipe 11 is fixedly installed on the plate frame and extends to the inside of the membrane to collect the water filtered by the membrane plate 1. This is the operating principle of the MBR membrane group, which will not be described in detail here. The multiple membrane plates 1 are connected to the manifold 12 through the manifold 11, and the manifold 12 is externally connected to a pumping device.

[0046] It also includes a convenient oxygen supply mechanism, which improves the oxygen supply efficiency by adjusting the gap between the membrane plates 1. The convenient oxygen supply mechanism includes a membrane frame 2, a rotating ring 21, a connecting rod 22 and an aeration pipe group 27;

[0047] The membrane frame 2 is a frame-type structure. The membrane frame 2 is U-shaped as a whole. The manifold 12 is fixedly mounted on one side of the membrane frame 2. The membrane plates 1 are evenly spaced and installed in the membrane frame 2. The membrane frame 2 is used to provide an installation position for the manifold 12 and the membrane plates 1. At the same time, the membrane frame 2 is also used to assist in lifting and transporting.

[0048] The manifold 12 is rotatably mounted with evenly distributed swivels 21, and the diaphragm plates 1 are all fixedly mounted with connecting rods 22, which are fixedly connected to the swivels 21. The manifold 12 is located on one side of the membrane frame 2, so that when the swivels 21 rotate, they can be driven by the connecting rods 22 to drive the diaphragm plates 1 to rotate around the manifold 12, and then detach from the membrane frame 2 from the top opening, separating the diaphragm plates 1 from the dense diaphragm plates 1 in the membrane frame 2, and as the rotation continues, the rotating diaphragm plates 1 eventually move to the side of the manifold 12 away from the membrane frame 2;

[0049] The water collecting pipe 11 passes through one end away from the membrane plate 1 and is fixedly installed on the swivel 21. A docking hole 26 is provided on the manifold 12. In the initial state, the water collecting pipe 11 is aligned with the docking hole 26 and is connected. Due to the fixed position of the docking hole 26, when the swivel 21 rotates on the manifold 12, the water collecting pipe 11, which is connected to the docking hole 26 in the initial state, will gradually move away from the docking hole 26, thereby disconnecting the rotated water collecting pipe 11 from the manifold 12. At this time, the membrane plate 1 and the water collecting pipe 11 are changed from a negative pressure state to a normal pressure state, thereby preventing the sludge from continuing to adhere to the membrane plate 1, and cooperating with the air-water mixed fluid formed by aeration to accelerate the diffusion of the sludge into the sewage, thereby allowing the oxygen formed by aeration to more conveniently enter the interior of the membrane frame 2;

[0050] The aeration pipe group 27 is installed below the membrane plate 1. The aeration pipe group 27 is connected to an external aeration device. The aeration pipe group 27 delivers compressed air to the bottom of the dense membrane plate 1. By utilizing the rising of bubbles and the rotation of the membrane plate 1, it can not only promote the sludge to flow and diffuse with the sewage, but also provide oxygen for the sludge, thereby enhancing the continuous purification effect of the sewage.

[0051] It also includes a step-by-step lifting and rotating mechanism, which cooperates with the convenient oxygen supply mechanism to lift the membrane plate 1 step by step, thereby gradually expanding the gap in the membrane frame 2;

[0052] A telescopic groove 24 is formed on the rotating ring 21 , and an elastic sealing ring 25 is installed in the telescopic groove 24 . The water collecting pipe 11 extends to the inner side of the elastic sealing ring 25 .

[0053] During the long-term use of the MBR membrane group, the MBR membrane group is always immersed in sewage. The continuous flow of sewage will cause sludge to be blocked in the gap between the membrane frame 2 and the membrane plate 1, making it difficult for bubbles formed by aeration to move into the inside of the membrane frame 2. In order to redisperse the sludge in the sewage and provide oxygen for the sludge, the present invention adopts a convenient feeding mechanism, which can provide oxygen for the sludge and use flushing to promote the sludge to diffuse in the sewage.

[0054] Specifically, in order to enhance the convenience of bubble diffusion and flushing, the MBR membrane group is always in working state during the aeration and oxygen supply process. The staff first controls the rotation of the rotating ring 21 by gradually lifting the rotating mechanism. The rotating ring 21, the connecting rod 22 and the membrane plate 1 are a whole. As the rotation continues, the rotated membrane plate 1 gradually separates from the densely arranged membrane plates 1 in the membrane frame 2. At this time, a large gap is formed between the densely arranged membrane plates 1. The aeration pipe group 27 continuously sprays compressed air into the sewage. The sewage and bubbles form an ascending liquid flow, which entrains and flushes the sludge in the gap, prompting the sludge to be redispersed in the sewage. At the same time, the oxygen in the bubbles dissolves in the sewage to supplement oxygen for the microorganisms. 1 rotates, and under the action of the elastic sealing ring 25 and the docking hole 26, the rotated membrane plate 1 is separated from the influence of the manifold 12. Under the influence of the liquid flow, the sludge on the membrane plate 1 is also entrained and dispersed by the sewage, and the manifold 12 is still under the action of the external pumping equipment, and continuously transmits the negative pressure to the water collection pipe 11 and the membrane plate 1 connected to the docking hole 26, so that the sewage treatment can be carried out continuously. After the gap has been flushed by the gas-liquid flow for a period of time, the swivel ring 21 is rotated in the opposite direction by the step-by-step lifting and rotating mechanism to reset the membrane plate 1. During the reset process of the membrane plate 1, the water collection pipe 11 is connected to the docking hole 26 again, so that the corresponding membrane plate 1 is connected to the MBR membrane group again.

[0055] It should be noted that by lifting and rotating the densely arranged membrane plates 1 in batches, the intervals between the densely arranged membrane plates 1 are gradually expanded, making it easier to entrain and disperse the sludge layer by layer. At the same time, the sewage treatment is uninterrupted, and the impact on the sewage treatment efficiency can be reduced.

[0056] The present invention provides a convenient oxygen supply mechanism and changes the installation method of the membrane plate 1 in the membrane frame 2. When the aeration and oxygen supply operation is carried out, the rotation of the swivel 21 is used to switch the position of the membrane plate 1, so that the narrow gap between the membrane plates 1 is expanded, thereby facilitating the gas-liquid flow formed by aeration to flush the sludge in the gap, thereby promoting the sludge to be dispersed in the sewage. Moreover, since the membrane plate 1 is reset again after rotation and the number of membrane plates 1 in a rotating state at the same time is limited, the continuous operation of the MBR membrane group is less affected.

[0057] As a preferred embodiment of the present invention, the step-by-step lifting and rotating mechanism includes a mounting base 3, a driving motor 31, a driving gear 36, a transmission rod 32 and a guide screw 33;

[0058] The membrane frame 2 is provided with a mounting seat 3, on which a driving motor 31 is fixedly mounted. The driving motor 31 is a waterproof motor.

[0059] A transmission rod 32 and a guide screw 33 are rotatably mounted on the mounting base 3 in parallel. The output end of the drive motor 31 is fixedly connected to the transmission rod 32. The transmission rod 32 and the guide screw 33 are connected by a belt transmission. After the drive motor 31 is started, the transmission rod 32 is directly controlled to rotate, and the guide screw 33 is indirectly driven to rotate by the belt.

[0060] The transmission rod 32 and the guide screw 33 are both mounted with a slide 35. The slide 35 is slidably connected to the transmission rod 32 and is screw-driven with the guide screw 33. When the guide screw 33 rotates, the slide 35 is screw-driven to move linearly along the axial direction of the transmission rod 32 and the guide screw 33. The direction of the linear motion is determined by the driving motor 31 and the thread direction of the guide screw 33.

[0061] The driving gear 36 is rotatably mounted on the slide 35. Both ends of the driving gear 36 are provided with inclined surfaces so that the driving gear 36 can mesh with the swivel 21 in sequence when making linear motion along the axial direction of the transmission rod 32. The transmission rod 32 is connected to the driving gear 36 through a transmission member. In the present invention, the transmission members on the two slides 35 are different. For example, in this embodiment, the transmission member on one of the slides 35 is a gear, which meshes with the driving gear 36. The gear is sleeved on the transmission rod 32 and is relatively fixed to the transmission rod 32 in the circumferential direction and slides relatively in the axial direction. The transmission member on the other slide 35 is a pulley, which is connected to the driving The movable gear 36 is provided with a belt to realize the belt transmission of the pulley and the driving gear 36. The pulley is provided on the transmission rod 32 and is relatively fixed to the transmission rod 32 in the circumferential direction and slides relatively in the axial direction. Therefore, when the transmission rod 32 rotates, the driving gears 36 on the two slides 35 will rotate in opposite directions. The rotating ring 21 is an incomplete gear-shaped design. The driving gear 36 is meshed and connected with the rotating ring 21. The driving gear 36 installed on the slide 35 is meshed with the rotating ring 21. Therefore, when the driving gear 36 rotates, it will synchronously drive the rotating ring 21 to rotate, thereby causing the diaphragm 1 corresponding to the rotating ring 21 to rotate.

[0062] There are two slides 35, and the driving gears 36 on the two slides 35 rotate in opposite directions. The driving gear 36 located at the front end of the movement direction pushes the rotating ring 21 to rotate in the direction away from the membrane frame 2. The front and rear driving gears 36 rotate in different directions. The driving gear 36 located at the front end pushes the corresponding rotating ring 21, connecting rod 22, and membrane plate 1 to separate from the inner cavity of the membrane frame 2, while the driving gear 36 located at the rear end pushes the corresponding rotating ring 21, connecting rod 22, and membrane plate 1 to rotate into the membrane frame 2.

[0063] In order to further enhance the convenience of lifting, rotating and resetting the membrane plate 1, a step-by-step lifting and rotating mechanism is provided in the present invention. The staff controls the start of the drive motor 31 through a pre-set controller. The start of the drive motor 31 causes the transmission rod 32 and the guide screw 33 to rotate. When the guide screw 33 rotates, the slide 35 is caused to make a linear motion in the axial direction of the guide screw 33, and the rotation of the transmission rod 32 causes the front and rear drive gears 36 to rotate. As the rotation continues, multiple membrane plates 1 located on the movement path of the front and rear drive gears 36 are rotated from the membrane frame 2 to the outside of the membrane frame 2, and then rotated from the outside of the membrane frame 2 to the inside of the membrane frame 2 again, so that the membrane plates 1 arranged in the membrane frame 2 can be lifted in sequence, thereby realizing the step-by-step entrainment and dispersion of the sludge in the gaps of the membrane plates 1.

[0064] It should be noted that by controlling the rotation rate of the drive motor 31, adjusting the sliding rate of the slide 35 and the rotation rate of the drive gear 36, the interval time between the lifting and resetting of the membrane plate 1 can be controlled, thereby facilitating the staff to select the appropriate aeration and oxygen supply time.

[0065] As a preferred embodiment of the present invention, an adjustment rod 37 is fixedly installed between the two slides 35 , and the adjustment rod 37 is an adjustable telescopic rod. The width of the partition box 23 is greater than the maximum distance between the two slides 35 .

[0066] The two slides 35 are connected by an adjusting rod 37, so that when the equipment is adjusted, the adjusting rod 37 is used to fix the distance between the two slides 35. The adjustable telescopic rod can be used to manually change the distance between the two slides 35 during subsequent equipment maintenance, so that the number of diaphragms 1 between the two slides 35 is changed, and ultimately the number of diaphragms 1 that are out of the influence of the manifold 12 at the same time is changed.

[0067] As a preferred embodiment of the present invention, a partition box 23 is detachably fixedly installed on one side of the film frame 2, and the top of the partition box 23 is designed to be open. A lifting groove 4 is provided on the film frame 2, and a lifting rod 41 is slidably installed in the lifting groove 4. The mounting seat 3 is fixedly installed on the top of the lifting rod 41, and the partition box 23 is detachably fixedly installed on the slide seat 35. When the lifting rod 41 is located at the bottom end of the lifting groove 4, the driving gear 36 is engaged with the swivel 21.

[0068] The drainage buoyancy of the partition box 23 is greater than the total gravity of the step-by-step lifting rotation mechanism and the partition box 23 .

[0069] In order to further facilitate the use of the equipment, the arrangement of the lifting groove 4 and the lifting rod 41 in the present invention enables the mounting seat 3, the slide 35 and the partition box 23 to be lifted and lowered in the vertical direction, and because the partition box 23 is a cavity structure, the drainage buoyancy of the partition box 23 is greater than the total gravity of the step-by-step lifting and rotating mechanism and the partition box 23. Therefore, when the membrane plate 1 is not lifted and rotated, the MBR membrane group is completely immersed in the sewage. Under the action of the drainage buoyancy of the partition box 23, the step-by-step lifting and rotating mechanism and the partition box 23 are suspended on the liquid surface together. When the membrane plate 1 needs to be lifted to return the sludge in the gap of the membrane plate 1 to the sewage, the connection between the slide 35 and the partition box 23 is disconnected, and under the action of gravity, the step-by-step lifting and rotating mechanism sinks downward until the mounting seat 3 is intercepted by the membrane frame 2. In this process, the lifting rod 4 1 and the lifting groove 4 are used as guides for movement. It should be noted that before the slide 35 and the partition box 23 are disassembled, the mounting seat 3 is tied with a rope. When the sludge between the membrane plates 1 is redispersed in the sewage, the staff can manually pull the rope to pull the step-by-step lifting and rotating mechanism to the liquid surface again, and then connect the slide 35 to the partition box 23 again. The buoyancy of the partition box 23 can be used to make the step-by-step lifting and rotating mechanism be above the water surface. At the same time, the present invention can also be applied to the maintenance process of the MBR membrane group. During maintenance, it is necessary to control the sewage liquid level to drop until the top of the membrane frame 2 is exposed to the water surface. At this time, the partition box 23 drops, and a step-by-step lifting and rotating assembly is used to lift multiple membrane plates 1 step by step to facilitate the staff to repair the membrane plates 1. The presence of the partition box 23 provides a stable space for the maintenance of the membrane plates 1.

[0070] As a preferred embodiment of the present invention, brushes 43 are fixedly mounted on both sides of the diaphragm 1 . When two adjacent diaphragms 1 rotate relative to each other, the brushes 43 come into frictional contact with the diaphragms 1 .

[0071] A support plate 42 is fixedly installed between two adjacent slides 35 . The support plate 42 is made of a wavy spring metal sheet. After the diaphragm 1 is fully rotated, the connecting rod 22 is located on the moving path of the support plate 42 .

[0072] The brush pieces 43 are all L-shaped in design. The brush pieces 43 are arranged along the edge of the diaphragm 1, and the brush pieces 43 on the side of the diaphragm 1 that are close to each other are staggered.

[0073] In order to further improve the dredging and dispersion effect of the sludge between the membrane plates 1, brush pieces 43 are provided on both sides of the membrane plate 1 in the present invention. The brush pieces 43 are composed of fixedly arranged bristles. When two adjacent membrane plates 1 move relative to each other, the sludge in the gap between the membrane plates 1 can be pushed under the action of the brush pieces 43. When the membrane plate 1 is rotated, as the slide 35 moves, the support plate 42 supports the membrane plate 1, causing the support plate 42 to move with the slide 35, pushing the rotated membrane plate 1 to produce a small rotation ring, and the membrane plate 1 moves up and down, so that the relative movement effect of the two adjacent membrane plates 1 is enhanced, and the brush pieces 43 are used to push the sludge on the surface of the membrane plate 1. With the action of water flow, the sludge is dispersed in the sewage. At the same time, the ups and downs of the membrane plate 1 also have a pushing effect on the sewage, thereby enhancing the flow effect of the sewage, thereby enhancing the dispersion effect of the sludge in the sewage.

[0074] 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 invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the 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 therein.

Claims

1. A treatment device for microbial filtration membrane wastewater, comprising a sewage tank, a membrane plate, a manifold and a water collection pipe; The membrane plates are installed in the sewage pool at equal intervals, and a water collecting pipe is fixedly installed on each membrane plate. The plurality of membrane plates are connected to a manifold through the water collecting pipe, and the manifold is externally connected to a pumping device; Its characteristics are: It also includes a convenient oxygen supply mechanism, which improves oxygen supply efficiency by adjusting the gap between the membrane plates. The convenient oxygen supply mechanism includes a membrane frame, a rotating ring, a connecting rod and an aeration pipe group; The membrane frame is a frame-type structure, and the membrane frame is designed in a U shape as a whole. The manifold is fixedly installed on one side of the membrane frame, and the membrane plates are installed in the membrane frame at equal intervals. The manifold is rotatably mounted with evenly distributed swivels, and the diaphragms are fixedly mounted with connecting rods, which are fixedly connected to the swivels. The water collecting pipe is penetrated at one end away from the membrane plate and fixedly mounted on the swivel, and a docking hole is provided on the manifold; The aeration tube group is installed below the membrane plate, and the aeration tube group is externally connected to an aeration device; In the initial state, the water collecting pipe is aligned with the docking hole and is connected, a telescopic groove is provided on the rotating ring, an elastic sealing ring is installed in the telescopic groove, and the water collecting pipe extends to the inner side of the elastic sealing ring; It also includes a step-by-step lifting and rotating mechanism, which cooperates with the convenient oxygen supply mechanism to lift the membrane plate step by step, thereby gradually expanding the gap in the membrane frame; The step-by-step lifting and rotating mechanism includes a mounting seat, a driving motor, a driving gear, a transmission rod and a guide screw; A mounting seat is installed on the film frame, and a driving motor is fixedly installed on the mounting seat; A transmission rod and a guide screw are rotatably mounted in parallel on the mounting seat, the output end of the drive motor is fixedly connected to the transmission rod, and the transmission rod is connected to the guide screw with a transmission belt; The transmission rod and the guide screw are both provided with a sliding seat, the sliding seat is slidably connected to the transmission rod and is helically driven by the guide screw; A driving gear is rotatably mounted on the slide, the transmission rod is connected to the driving gear through a transmission member, the rotating ring is designed as an incomplete gear, and the driving gear is meshed with the rotating ring; There are two slides, and the driving gears on the two slides rotate in opposite directions. The driving gear located at the front end of the movement direction drives the rotating ring to rotate in the direction close to the partition box.

2. The treatment equipment for microbial filtration membrane wastewater according to claim 1, characterized in that: An adjusting rod is fixedly installed between the two slide seats, and the adjusting rod is an adjustable telescopic rod.

3. The treatment equipment for microbial filtration membrane wastewater according to claim 1, characterized in that: A partition box is detachably fixedly mounted on one side of the slide seat, and the top of the partition box is designed to be open.

4. The treatment equipment for microbial filtration membrane wastewater according to claim 3, characterized in that: A lifting groove is provided on the membrane frame, a lifting rod is slidably installed in the lifting groove, and the mounting seat is fixedly installed on the top of the lifting rod. When the lifting rod is located at the bottom of the lifting groove, the driving gear is engaged with the rotating ring, and the drainage buoyancy of the partition box is greater than the total gravity of the step-by-step lifting rotating mechanism and the partition box.

5. The treatment equipment for microbial filtration membrane wastewater according to claim 1, characterized in that: A support plate is fixedly installed between two adjacent slides, and the support plate is composed of a wavy spring metal sheet. When the diaphragm is fully rotated, the corresponding connecting rod is located on the moving path of the support plate.

6. The treatment equipment for microbial filtration membrane wastewater according to claim 5, characterized in that: Brushes are fixedly mounted on both sides of the diaphragm. When two adjacent diaphragms rotate relative to each other, the brushes come into frictional contact with the diaphragms.

7. The treatment equipment for microbial filtration membrane wastewater according to claim 6, characterized in that: The brush pieces are all L-shaped in design, and are arranged along the edge of the membrane plate. The brush pieces on the side of the membrane plate that are close to each other are staggered.

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