Sewage treatment equipment with immersed MBR (Membrane Biological Reactor) flat membrane

Abstract

The utility model relates to the technical field of sewage treatment, in particular to sewage treatment equipment with an immersed MBR (Membrane Biological Reactor) flat membrane, which comprises a membrane frame, an aeration frame, a plurality of membrane elements, a water collecting pipe, a plurality of hoses and an aeration pipe. Sewage is filtered by the membrane through certain negative pressure given by the suction pump, so that water flow is converged into the water collecting pipe from the plurality of hoses to be uniformly discharged, and the device is high in strength, not easy to block, free of backwashing and off-line cleaning, capable of independently replacing membrane elements, convenient to maintain and repair, capable of greatly improving the treatment capacity and capable of reducing the occupied area of the reaction tank.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a sewage treatment device with an immersed MBR flat membrane. Background Art

[0002] The membrane method technology is the main process for sewage resource utilization, which can greatly improve the water quality of the produced water and is the main process for advanced water treatment.

[0003] It is an advanced sewage treatment device that combines biological treatment technology and membrane separation technology. Through the efficient filtration of the immersed MBR flat membrane, the advanced treatment of sewage is realized, with remarkable treatment effects and a wide range of application fields.

[0004] However, in the prior art, the membrane filaments will break during the long-term operation of the membrane sheet, which is easy to be blocked. The membrane sheet cannot selectively replace the membrane element, and the reaction tank volume required for the membrane sheet is large. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a sewage treatment device with an immersed MBR flat membrane, which solves the problems that the membrane filaments will break during the long-term operation of the membrane sheet in the prior art, it is easy to be blocked, the membrane sheet cannot selectively replace the membrane element, and the reaction tank volume required for the membrane sheet is large.

[0006] To achieve the above purpose, the utility model provides a sewage treatment device with an immersed MBR flat membrane, including a membrane frame, an aeration frame, a plurality of membrane elements, a water collecting pipe, a plurality of hoses and an air supply pipe. The membrane frame is fixedly connected to the aeration frame and is located at the upper end of the aeration frame. A plurality of the membrane elements are sequentially inserted into the membrane frame. The water collecting pipe is fixedly connected to the membrane frame and is located at the upper end of the membrane frame. One ends of the plurality of hoses are respectively communicated with the corresponding membrane elements, and the other ends of the plurality of hoses are respectively communicated with the water collecting pipe. The air supply pipe is fixedly connected to the aeration frame and is located at the lower end of the aeration frame.

[0007] Wherein, each of the membrane elements includes a water intake pipe, a support plate, a membrane pad and a porous microfiltration membrane sheet. The water intake pipe penetrates through the upper end of the support plate. The membrane pad is arranged inside the support plate. The porous microfiltration membrane sheet is fixedly connected to the membrane pad and is located inside the membrane pad, and the water intake pipe is communicated with one end of the corresponding hose.

[0008] Wherein, the upper end of the support plate has a convex block, and the convex block has a first round hole.

[0009] Wherein, the sewage treatment device with an immersed MBR flat membrane further includes a plurality of reinforcing rods, and the plurality of reinforcing rods are respectively arranged on the membrane frame.

[0010] Among them, the sewage treatment equipment with the immersed MBR flat membrane further includes a plurality of bottom plates, each of the bottom plates has a second round hole, and the plurality of bottom plates are respectively fixedly connected to the aeration frame and are respectively located around the bottom of the aeration frame.

[0011] For a sewage treatment equipment with an immersed MBR flat membrane of the present utility model, the membrane frame is fixedly connected to the aeration frame and is located at the upper end of the aeration frame. A plurality of the membrane elements are sequentially inserted into the membrane frame. The water collecting pipe is fixedly connected to the membrane frame and is located at the upper end of the membrane frame. One ends of a plurality of the hoses are respectively communicated with the corresponding membrane elements, and the other ends of the plurality of hoses are respectively communicated with the water collecting pipe. The air supply pipe is fixedly connected to the aeration frame and is located at the lower end of the aeration frame. The external aeration fan aerates through the aeration pipeline at the bottom of the aeration frame to provide the required oxygen for the upper-layer membrane frame and the membrane elements and slow down the pollution of the membrane elements. Sewage is given a certain negative pressure by a suction pump and passes through membrane filtration, so that the water flow converges into the water collecting pipe through the plurality of hoses and is discharged uniformly. This device has high strength, is not easy to be blocked, does not require backwashing and offline cleaning, can replace the membrane elements separately, is convenient for maintenance and repair, greatly improves the treatment capacity, and reduces the floor area of the reaction tank. Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art.

[0013] Figure 1 It is a schematic structural view of the whole of the present utility model.

[0014] Figure 2 It is a front view of the whole of the present utility model.

[0015] Figure 3 It is a top view of the whole of the present utility model.

[0016] Figure 4 It is a front view of the membrane element of the present utility model.

[0017] 1 - membrane frame, 2 - aeration frame, 3 - water collecting pipe, 4 - hose, 5 - air supply pipe, 6 - water intake pipe, 7 - support plate, 8 - membrane pad, 9 - porous microfiltration membrane sheet, 10 - convex block, 11 - first round hole, 12 - reinforcing rod, 13 - bottom plate, 14 - second round hole. Detailed Embodiments

[0018] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model.

[0019] Please refer to Figures 1 to 4 , wherein Figure 1 is a schematic structural view of the whole of the present utility model, Figure 2 is a front view of the whole of the present utility model, Figure 3 is a top view of the whole of the present utility model, Figure 4 is a front view of the membrane element of the present utility model.

[0020] The present utility model provides a sewage treatment device with an immersed MBR flat membrane, including a membrane frame 1, an aeration frame 2, a plurality of membrane elements, a collecting pipe 3, a plurality of hoses 4 and an aeration pipe 5. The membrane frame 1 is fixedly connected to the aeration frame 2 and is located at the upper end of the aeration frame 2. A plurality of the membrane elements are sequentially inserted into the membrane frame 1. The collecting pipe 3 is fixedly connected to the membrane frame 1 and is located at the upper end of the membrane frame 1. One ends of the plurality of hoses 4 are respectively communicated with the corresponding membrane elements, and the other ends of the plurality of hoses 4 are respectively communicated with the collecting pipe 3. The aeration pipe 5 is fixedly connected to the aeration frame 2 and is located at the lower end of the aeration frame 2.

[0021] In this embodiment, an external aeration fan aerates through the aeration pipe 5 at the bottom of the aeration frame 2 to provide the required oxygen for the upper membrane frame 1 and the membrane elements and slow down the pollution of the membrane elements. Sewage is given a certain negative pressure by a suction pump and passes through membrane filtration, so that the water flow converges into the collecting pipe 3 from the plurality of hoses 4 and is discharged uniformly. This device has high strength, is not easily blocked, does not require backwashing and off-line cleaning, can replace the membrane elements separately, is convenient for maintenance and repair, greatly improves the treatment capacity, and reduces the floor area of the reaction tank. This device can be directly placed in the membrane separation tank. Compared with the traditional method, it does not require a sedimentation tank, and the aeration tank can be further miniaturized.

[0022] Further, each of the membrane elements includes a water intake pipe 6, a support plate 7, a membrane pad 8 and a porous microfiltration membrane sheet 9. The water intake pipe 6 penetrates through the upper end of the support plate 7. The membrane pad 8 is arranged inside the support plate 7. The porous microfiltration membrane sheet 9 is fixedly connected to the membrane pad 8 and is located inside the membrane pad 8, and the water intake pipe 6 is communicated with one end of the corresponding hose 4.

[0023] In this embodiment, a non-woven fabric is used as the flow guiding layer inside the porous microfiltration membrane sheet 9, and a 3-5 mm ABS board is used as the support layer. The porous microfiltration membrane sheet 9 is made of CPVC, which ensures the strength. The support plate 7 ensures the overall rigidity and flatness of the porous microfiltration membrane sheet 9. The welding ribs on it are hermetically welded to the membrane paper through eddy current welding to ensure the complete sealing of the porous microfiltration membrane sheet 9. The membrane pad 8 is spot-welded to the support plate 7 to prevent the membrane paper from being too tightly attached to the support plate 7, ensure the water permeability of the membrane, and reduce the suction resistance. The porous microfiltration membrane sheet 9 is given a certain suction negative pressure through the water intake to pump out the qualified water. The area of a single porous microfiltration membrane sheet 9 is 0.8 m² / d, and the average membrane flux is 0.5-0.8 m³ / d. The nominal pore size of the membrane is 0.4 μm, and the average pore size is 0.2 μm.

[0024] Further, the upper end of the support plate 7 has a convex block 10, and the convex block 10 has a first round hole 11.

[0025] In this embodiment, when the membrane element needs to be disassembled, the hook is hooked on the first round hole 11, and then the membrane element is pulled outwards, so as to carry out rapid disassembly.

[0026] Further, the sewage treatment device with the submerged MBR flat membrane further includes a plurality of reinforcing rods 12, and the plurality of reinforcing rods 12 are respectively arranged on the membrane frame 1.

[0027] In this embodiment, through the arrangement of the plurality of reinforcing rods 12, the support strength and the stabilizing effect of the membrane frame 1 are improved.

[0028] Further, the sewage treatment device with the submerged MBR flat membrane further includes a plurality of bottom plates 13. Each bottom plate 13 has a second round hole 14. The plurality of bottom plates 13 are respectively fixedly connected to the aeration frame 2 and are respectively located around the bottom of the aeration frame 2.

[0029] In this embodiment, the staff can pass an external bolt through the corresponding second round hole 14 and fix the bolt on the ground, so as to stably and firmly fix the device on the ground and prevent the device from shaking and moving during operation.

[0030] The above-disclosed are only one or more preferred embodiments of the present application, and the scope of the rights of the present application cannot be limited thereby. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present application still fall within the scope covered by the present application.

Claims

1. A sewage treatment plant with an immersed MBR flat membrane, characterized in that: It includes a membrane frame, an aeration frame, multiple membrane elements, a water collecting pipe, multiple hoses and an aeration pipe. The membrane frame is fixedly connected to the aeration frame and is located at the upper end of the aeration frame. The multiple membrane elements are inserted into the membrane frame in sequence. The water collecting pipe is fixedly connected to the membrane frame and is located at the upper end of the membrane frame. One ends of the multiple hoses are respectively connected to the corresponding membrane elements, and the other ends of the multiple hoses are respectively connected to the water collecting pipe. The aeration pipe is fixedly connected to the aeration frame and is located at the lower end of the aeration frame.

2. The sewage treatment equipment with submerged MBR flat membrane according to claim 1, characterized in that: Each of the membrane elements includes a water intake pipe, a support plate, a membrane pad and a porous microfiltration membrane sheet. The water intake pipe passes through the upper end of the support plate, the membrane pad is arranged inside the support plate, the porous microfiltration membrane sheet is fixedly connected to the membrane pad and is located inside the membrane pad, and the water intake pipe is connected to one end of the corresponding hose.

3. The sewage treatment equipment with submerged MBR flat membrane according to claim 2, characterized in that: The upper end of the support plate is provided with a convex block, and the convex block is provided with a first circular hole.

4. The sewage treatment equipment with submerged MBR flat membrane according to claim 3, characterized in that: The sewage treatment equipment with the submerged MBR flat membrane further comprises a plurality of reinforcement rods, and the plurality of reinforcement rods are respectively arranged on the membrane frame.

5. The sewage treatment equipment with submerged MBR flat membrane according to claim 4, characterized in that: The sewage treatment equipment with submerged MBR flat membrane also includes a plurality of bottom plates, each of which has a second circular hole, and the plurality of bottom plates are respectively fixedly connected to the aeration frame and are respectively located around the bottom of the aeration frame.

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