Device for removing fibrous matters in MBR (membrane bioreactor) membrane system

Abstract

The utility model belongs to the technical field of sewage treatment equipment, and particularly relates to a device for removing fibrous matters in an MBR (Membrane Bioreactor) membrane system. According to the technical scheme, the device for removing the fibrous materials in the MBR membrane system comprises a pre-aeration pipe arranged at the bottom of a biochemical pool and a rolling brush assembly arranged on the water surface of the biochemical pool, a fibrous material collecting scraper is arranged at the outlet end of the rolling brush assembly, the fibrous material collecting scraper is connected with a conveying assembly, and a fibrous material collecting basket is arranged at the output end of the conveying assembly. The utility model provides a device for removing fibrous matters in an MBR (Membrane Bioreactor) membrane system.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment equipment, and particularly relates to a device for removing fiber in an MBR membrane system. Background Art

[0002] As an efficient sewage treatment technology, MBR membrane technology intercepts pollutants and impurities in sewage by physical separation. Usually, after a period of operation, the intercepted pollutants and impurities will adhere to the membrane surface to form fouling. In daily operation, the MBR membrane assembly is generally purged by aeration to make the membrane fibers vibrate and shake off the pollutants and impurities attached to the surface. However, there are often a large number of fine fibers such as hair in the sewage, which gradually float up under the action of aeration and eventually adhere to the top of the membrane assembly and accumulate more and more. The more fibers are entangled, the more restricted the activity of the membrane assembly is, and the inability to oscillate completely leads to the ineffective removal of pollutants. This will undoubtedly greatly accelerate the degree of contamination of the MBR membrane assembly, and the frequency of maintenance and cleaning will also increase accordingly, seriously affecting the continuous normal operation and operation and maintenance costs of the membrane system. Utility Model Content

[0003] In order to solve the above problems existing in the prior art, the purpose of the utility model is to provide a device for removing fibers in an MBR membrane system.

[0004] The technical solution adopted by the utility model is:

[0005] A device for removing fibers in an MBR membrane system comprises a pre-aeration pipe arranged at the bottom of a biochemical pool, a roller brush assembly arranged on the water surface of the biochemical pool, a fiber collecting scraper arranged at the outlet end of the roller brush assembly, the fiber collecting scraper is connected to a transmission assembly, and a fiber collecting basket is arranged at the output end of the transmission assembly.

[0006] The utility model uses pre-aeration to make the fibers in the sewage float up and be collected by the rotating roller brush assembly, and then taken out by the conveying assembly with rake teeth. The fibers are conveyed to the top opening and then fall into the fiber collection basket for storage, and are cleaned manually regularly. The utility model can effectively remove the fibers in the effluent of the biochemical pool before entering the membrane pool, prevent the fibers from winding around the membrane assembly, improve the aeration effect of the MBR membrane system, and slow down the contamination rate of the MBR membrane assembly.

[0007] The utility model is installed at the end of the biochemical pool outlet channel and the front end of the MBR membrane pool inlet channel. The size can be customized according to the existing process structures in the sewage plant, and no civil engineering modification is involved. Only the front roller brush of the device is inserted into the water surface, which has little impact on the flow area of ​​the water channel and has a wide range of applications.

[0008] As a preferred embodiment of the utility model, the roller brush assembly includes a first roller brush and a second roller brush, the first roller brush is arranged on the water surface of the biochemical pool, the first roller brush and the second roller brush are closely arranged, and the fiber collecting scraper is close to the second roller brush.

[0009] Under the action of aeration, the fibers in the sewage will float to the vicinity of the water surface. When the sewage flows from the biochemical pool to the membrane pool, the sewage will first contact the first roller brush. Since the fibers in the sewage are already above the water flow layer due to the action of aeration, the rotation of the first roller brush can intercept a large amount of fibers and wrap them around the bristles. Since the bristles of the first roller brush and the second roller brush are close to each other and intertwined, the fibers are transferred to the second roller brush as the first roller brush continues to rotate. As the second roller brush rotates, its bristles will pass through the fiber collection scraper. The top of the fiber collection scraper adopts a sawtooth cutting structure. During the rotation of the second roller brush, all the fibers on the bristles can be intercepted, and the tightly wound fibers can be cut. The intercepted fibers will fall into the arc-shaped groove below the fiber collection scraper. After being collected by the rake teeth, the fibers will be transferred to the rear discharge outlet along with the conveying assembly.

[0010] As a preferred solution of the utility model, a sawtooth cutting structure is provided on the fiber collecting scraper.

[0011] As a preferred solution of the utility model, the transmission component is provided with a plurality of rake teeth, and the rake teeth are provided with a plurality of holes. Since the dense holes are provided on the rake teeth, while intercepting and transmitting the fiber, the excess water can also be drained and returned to the membrane pool inlet channel.

[0012] As a preferred embodiment of the utility model, it also includes a shell, a roller brush assembly, a fiber collection scraper and a conveying assembly are arranged in the shell, a slag inlet and a slag discharge port are arranged on the shell, the roller brush assembly is located at the slag inlet, and the fiber collection basket is located below the slag discharge port.

[0013] As a preferred solution of the utility model, the shell is respectively connected with a first flushing nozzle and a second flushing nozzle, the first flushing nozzle is located on the upper side of the roller brush assembly, and the second flushing nozzle is located on the upper side of the transmission assembly.

[0014] As a preferred solution of the utility model, a first solenoid valve is connected to the water inlet pipeline of the first flushing nozzle, and a second solenoid valve is connected to the water inlet pipeline of the second flushing nozzle.

[0015] As a preferred solution of the utility model, the water inlet pipeline of the first flushing nozzle and the water inlet pipeline of the second flushing nozzle are connected to the membrane pool backwash water pipe.

[0016] The utility model is provided with a first flushing nozzle and a second flushing nozzle. During the operation of the device, the roller brush can be regularly flushed according to the existing actual situation. When a membrane group in the MBR membrane system is undergoing a backwashing procedure, the flushing procedure of the device can be performed simultaneously. When the flushing procedure is performed, the first solenoid valve and the second solenoid valve are first opened, and the membrane system backwashing water flushes the second roller brush through the first flushing nozzle, and the flushed fibers fall into the arc-shaped groove at the bottom of the fiber collection scraper. The rake teeth are flushed through the second flushing nozzle, and the fibers on the rake teeth can be flushed and peeled off the rake tooth surface, and fall into the fiber collection basket to complete collection and drainage.

[0017] As a preferred solution of the utility model, the pre-aeration pipe is connected to the membrane pool purge pipe, and a third solenoid valve is connected to the pre-aeration pipe.

[0018] The switch of the aeration system of the MBR membrane system and the switch of the third solenoid valve on the pre-aeration pipe are set as a chain program. When the MBR membrane system is in a normal aeration state, the third solenoid valve is turned on to start the pre-aeration. Under the action of aeration, the fibers in the sewage will float to the vicinity of the water surface.

[0019] The utility model uses the purge aeration of the membrane system itself to pre-aerate the inlet water of the device, and uses the reverse absorption water of the membrane system to perform regular cleaning through the flushing nozzle. Both of the above operations do not require additional separate equipment, reduce daily equipment maintenance, and do not require additional manual work.

[0020] As a preferred solution of the utility model, a perforated plate is provided in the middle of the fiber collection basket, and the fiber collection frame is located at the lower layer below the perforated plate and is connected to the membrane pool water inlet pump through a pipe. In order to prevent excessive slag moisture, the fiber collection basket is divided into two layers, upper and lower, by the perforated plate. When the fiber falls in, it can be intercepted by the perforated plate and stored in the upper layer, and the excess moisture can flow into the lower layer through the perforated plate. The lower layer has an opening to connect the pipe to discharge to the membrane pool water inlet channel nearby.

[0021] The beneficial effects of the utility model are:

[0022] 1. The utility model uses pre-aeration to make the fibers in the sewage float up and be collected by the rotating roller brush assembly, and then taken out by the conveying assembly with rake teeth, so that the fibers in the effluent of the biochemical pool can be effectively removed before entering the membrane pool, preventing the fibers from winding around the membrane assembly, improving the aeration effect of the MBR membrane system, and slowing down the contamination rate of the MBR membrane assembly.

[0023] 2. The utility model uses the purge aeration of the membrane system itself to pre-aerate the inlet water of the device, and uses the back-absorption water of the membrane system to perform regular cleaning through the flushing nozzle. Both of the above operations do not require additional separate equipment, reduce daily equipment maintenance, and do not require additional manual work.

[0024] 3. The utility model is installed at the end of the biochemical pool outlet channel and the front end of the MBR membrane pool inlet channel. The size can be customized according to the existing process structures in the sewage plant, and no civil engineering modification is involved. Only the front roller brush of the device is inserted into the water surface, which has little impact on the flow area of ​​the water channel and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the utility model.

[0026] In the figure: 1-pre-aeration pipe; 2-roller brush assembly; 3-fiber collection scraper; 4-transmission assembly; 5-fiber collection basket; 6-shell; 11-third solenoid valve; 21-first roller brush; 22-second roller brush; 31-sawtooth cutting structure; 32-arc groove; 41-rake teeth; 51-punching plate; 61-slag inlet; 62-slag discharge outlet; 63-first flushing nozzle; 64-second flushing nozzle; 65-first solenoid valve; 66-second solenoid valve. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0029] like Figure 1 As shown, the device for removing fibers in the MBR membrane system of this embodiment includes a pre-aeration pipe 1 arranged at the bottom of the biochemical pool, a roller brush assembly 2 arranged on the water surface of the biochemical pool, a fiber collecting scraper 3 is arranged at the outlet end of the roller brush assembly 2, the fiber collecting scraper 3 is connected to the transmission assembly 4, and a fiber collecting basket 5 is arranged at the output end of the transmission assembly 4.

[0030] The utility model uses pre-aeration to make the fibers in the sewage float up and be collected by the rotating roller brush assembly 2, and then taken out by the conveying assembly 4 with rake teeth 41. The fibers are conveyed to the top opening and then fall into the fiber collection basket 5 for storage, and are cleaned manually regularly. The utility model can effectively remove the fibers in the effluent of the biochemical pool before entering the membrane pool, prevent the fibers from winding around the membrane assembly, improve the aeration effect of the MBR membrane system, and slow down the contamination rate of the MBR membrane assembly.

[0031] The utility model is installed at the end of the biochemical pool outlet channel and the front end of the MBR membrane pool inlet channel. The size can be customized according to the existing process structures in the sewage plant, and no civil engineering modification is involved. Only the front roller brush of the device is inserted into the water surface, which has little impact on the flow area of ​​the water channel and has a wide range of applications.

[0032] The roller brush assembly 2 includes a first roller brush 21 and a second roller brush 22. The first roller brush 21 is arranged on the water surface of the biochemical pool. The first roller brush 21 and the second roller brush 22 are arranged closely, and the fiber collection scraper 3 is close to the second roller brush 22. The fiber collection scraper 3 is provided with a sawtooth cutting structure 31 and an arc groove 32.

[0033] Under the action of aeration, the fibers in the sewage will float to the vicinity of the water surface. When the sewage flows from the biochemical pool to the membrane pool, the sewage will first contact the first roller brush 21. Since the fibers in the sewage are already above the water flow layer due to the action of aeration, the rotation of the first roller brush 21 can intercept a large amount of fibers and wrap them around the bristles. Since the bristles of the first roller brush 21 and the second roller brush 22 are close to each other and intertwined, the fibers are transferred to the second roller brush 22 under the continuous rotation of the first roller brush 21. As the second roller brush 22 rotates, its bristles will pass through the fiber collection scraper 3. The top of the fiber collection scraper 3 adopts a sawtooth cutting structure 31. During the rotation of the second roller brush 22, the fibers on the bristles can be completely intercepted, and the tightly wound fibers can be cut. The intercepted fibers will fall into the arc groove 32 below the fiber collection scraper 3. After being collected by the rake teeth 41, the fibers are transferred to the rear discharge outlet along with the conveying component 4.

[0034] The bristles of the first tube roller brush and the second roller brush 22 are made of nylon filaments, which adopt a cross-wire angular structure to enhance the bristle toughness and improve the adsorption and interception capabilities. The roller brush assembly 2 can be equipped with a single or multiple roller brushes according to actual conditions, and the bristles of multiple roller brushes are interlaced to achieve the transfer of intercepted objects.

[0035] The conveying assembly 4 is provided with a plurality of rake teeth 41, and a plurality of holes are provided on the rake teeth 41. Since the dense holes are provided on the rake teeth 41, while intercepting and conveying the fiber material, the excess water can also be drained and returned to the membrane pool inlet channel.

[0036] Furthermore, the utility model also includes a shell 6, a roller brush assembly 2, a fiber collecting scraper 3 and a conveying assembly 4 are arranged in the shell 6, and a slag inlet 61 and a slag discharge port 62 are provided on the shell 6. The roller brush assembly 2 is located at the slag inlet 61, and the fiber collecting basket 5 is located below the slag discharge port 62.

[0037] The housing 6 is connected to a first flushing nozzle 63 and a second flushing nozzle 64, respectively. The first flushing nozzle 63 is located on the upper side of the roller brush assembly 2, and the second flushing nozzle 64 is located on the upper side of the transmission assembly 4. A first solenoid valve 65 is connected to the water inlet pipeline of the first flushing nozzle 63, and a second solenoid valve 66 is connected to the water inlet pipeline of the second flushing nozzle 64. The water inlet pipeline of the first flushing nozzle 63 and the water inlet pipeline of the second flushing nozzle 64 are connected to the membrane pool backwash water pipe.

[0038] The utility model is provided with a first flushing nozzle 63 and a second flushing nozzle 64. During the operation of the device, the roller brush can be regularly flushed according to the existing actual situation. When a membrane group in the MBR membrane system is undergoing a backwashing procedure, the flushing procedure of the device can be performed simultaneously. When the flushing procedure is performed, the first solenoid valve 65 and the second solenoid valve 66 are first opened, and the membrane system backwashing water flushes the second roller brush 22 through the first flushing nozzle 63, and the flushed fibers fall into the arc-shaped groove 32 at the bottom of the fiber collection scraper 3. The rake teeth 41 are flushed through the second flushing nozzle 64, and the fibers on the rake teeth 41 can be flushed and peeled off the surface of the rake teeth 41, and fall into the fiber collection basket 5 to complete the collection and drainage.

[0039] The shell 6 is made of 304 stainless steel and is installed at the end of the biochemical pool outlet channel and the front end of the MBR membrane pool inlet channel. The rake teeth 41 on the transmission component 4 are in close contact with the shell 6 to prevent the collected fibers from falling back into the water.

[0040] Furthermore, the pre-aeration pipe 1 is connected to the membrane pool purge pipe, and a third solenoid valve 11 is connected to the pre-aeration pipe 1 .

[0041] The switch of the aeration system of the MBR membrane system and the switch of the third solenoid valve 11 on the pre-aeration pipe 1 are set as a chain program. When the MBR membrane system is in a normal aeration state, the third solenoid valve 11 is opened to turn on the pre-aeration. Under the action of aeration, the fibers in the sewage will float to the vicinity of the water surface.

[0042] The utility model uses the purge aeration of the membrane system itself to pre-aerate the inlet water of the device, and uses the reverse absorption water of the membrane system to perform regular cleaning through the flushing nozzle. Both of the above operations do not require additional separate equipment, reduce daily equipment maintenance, and do not require additional manual work.

[0043] Furthermore, a perforated plate 51 is provided in the middle of the fiber collection basket 5, and the lower layer of the fiber collection frame below the perforated plate 51 is connected to the membrane pool water inlet pump through a pipe. In order to prevent excessive slag moisture, the fiber collection basket 5 is divided into two layers by the perforated plate 51, and when the fiber falls in, it can be intercepted by the perforated plate 51 and stored in the upper layer, and the excess moisture can flow into the lower layer through the perforated plate 51, and the lower layer has a hole connection pipe to be discharged to the membrane pool water inlet channel nearby.

[0044] The present utility model is not limited to the above-mentioned optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all technical solutions that fall within the scope defined by the claims of the present utility model fall within the protection scope of the present utility model.

Claims

1. A device for removing fibers from an MBR membrane system, characterized in that: The invention comprises a pre-aeration pipe (1) arranged at the bottom of a biochemical pool, and a roller brush assembly (2) arranged on the water surface of the biochemical pool; a fiber collecting scraper (3) is arranged at the outlet end of the roller brush assembly (2); the fiber collecting scraper (3) is connected to a transmission assembly (4); and a fiber collecting basket (5) is arranged at the output end of the transmission assembly (4).

2. The device for removing fibers from an MBR membrane system according to claim 1, characterized in that: The roller brush assembly (2) comprises a first roller brush (21) and a second roller brush (22); the first roller brush (21) is arranged on the water surface of the biochemical pool; the first roller brush (21) and the second roller brush (22) are closely arranged; and the fiber collecting scraper (3) is close to the second roller brush (22).

3. The device for removing fibers in an MBR membrane system according to claim 1, characterized in that: The fiber collecting scraper (3) is provided with a sawtooth cutting structure (31).

4. The device for removing fibers from an MBR membrane system according to claim 1, characterized in that: The conveying component (4) is provided with a plurality of rake teeth (41), and the rake teeth (41) are provided with a plurality of holes.

5. The device for removing fibers in an MBR membrane system according to claim 1, characterized in that: The invention also comprises a shell (6), wherein a roller brush assembly (2), a fiber collecting scraper (3) and a conveying assembly (4) are arranged in the shell (6), a slag inlet (61) and a slag discharge port (62) are arranged on the shell (6), the roller brush assembly (2) is located at the slag inlet (61), and the fiber collecting basket (5) is located below the slag discharge port (62).

6. The device for removing fibers in an MBR membrane system according to claim 5, characterized in that: The housing (6) is respectively connected to a first flushing nozzle (63) and a second flushing nozzle (64); the first flushing nozzle (63) is located on the upper side of the roller brush assembly (2), and the second flushing nozzle (64) is located on the upper side of the transmission assembly (4).

7. The device for removing fibers in an MBR membrane system according to claim 6, characterized in that: The water inlet pipeline of the first flushing nozzle (63) is connected to a first solenoid valve (65), and the water inlet pipeline of the second flushing nozzle (64) is connected to a second solenoid valve (66).

8. The device for removing fibers in an MBR membrane system according to claim 7, characterized in that: The water inlet pipeline of the first flushing nozzle (63) and the water inlet pipeline of the second flushing nozzle (64) are connected to the membrane pool backwash water pipe.

9. The device for removing fibers in an MBR membrane system according to claim 1, characterized in that: The pre-aeration pipe (1) is connected to the membrane pool purge pipe, and a third solenoid valve (11) is connected to the pre-aeration pipe (1).

10. The device for removing fibers in an MBR membrane system according to any one of claims 1 to 9, characterized in that: A perforated plate (51) is provided in the middle of the fiber collection basket (5), and the fiber collection frame is located at a lower layer below the perforated plate (51) and is connected to the membrane pool water inlet pump through a pipeline.

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