Membrane module

Abstract

The utility model relates to a membrane component, which is characterized by comprising a membrane curtain, the membrane curtain comprises a frame with an upper water collecting chamber and a lower water collecting chamber, and membrane filaments arranged between the upper water collecting chamber and the lower water collecting chamber, the left side of the frame is provided with a water producing channel communicated with the upper water collecting chamber and the lower water collecting chamber, and the left side of the frame is provided with a water outlet channel communicated with the upper water collecting chamber and the lower water collecting chamber. An air inlet channel is arranged on the right side of the frame; the large bubble pulse aeration device is located below the membrane curtain, an air inlet insertion opening is formed in the right side of the top of the large bubble pulse aeration device, the air inlet insertion opening is matched with an air inlet channel in the right side of the membrane frame, and the large bubble pulse aeration device is detachably connected with the bottom of the membrane curtain frame.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and more specifically to a membrane module. Background Technology

[0002] Membrane modules are commonly used in wastewater treatment. Existing membrane modules generally include a membrane curtain and an aeration device, but these are separate structures requiring separate installation, resulting in significant manpower waste. During operation, contaminants accumulate on the surface of the membrane fibers, affecting the filtration efficiency. To reduce surface fouling, aeration scrubbing is the most widely used method to mitigate membrane fouling. It relies on the impact of airflow to remove contaminants from the membrane fiber surface, thus cleaning it. Aeration scrubbing is primarily achieved through aeration devices. Traditional aeration devices include an aeration fan and aeration pipes with aeration holes. Airflow impacts the membrane fibers through these holes, but this aeration method typically involves relatively low airflow and limited impact force, resulting in incomplete cleaning of the contaminants on the membrane fiber surface. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a membrane module. The technical solution adopted is as follows: a membrane module, characterized in that it includes: a membrane curtain, the membrane curtain including a frame with an upper water collection chamber and a lower water collection chamber, membrane fibers placed between the upper water collection chamber and the lower water collection chamber, wherein a water production channel communicating with the upper and lower water collection chambers is provided on the left side of the frame, and an air inlet channel is provided on the right side of the frame; a large bubble pulse aeration device located below the membrane curtain, the large bubble pulse aeration device having an air inlet on the top right side, the air inlet being adapted to the air inlet channel on the right side of the membrane frame, and the large bubble pulse aeration device being detachably connected to the bottom of the membrane curtain frame.

[0004] A further technical feature of this utility model is:

[0005] The large bubble pulse aeration device includes: a shell, comprising a front side plate, a rear side plate, a left side plate, a right side plate, and a top plate; an open-bottom left chamber and a closed-bottom gas buffer chamber located on the right side of the shell; the gas buffer chamber being connected to the air inlet and having an air outlet on a side wall shared with the left chamber; an air inlet groove slidably connected to the shell and embedded in the left chamber, the air inlet groove being a rectangular groove with an open bottom, an air inlet pipe at one end of the air inlet groove, and an air outlet on the side of the air inlet groove, wherein the air inlet pipe matches the air outlet of the gas buffer chamber; a gas collecting chamber fixed to the top plate of the shell and extending into the left chamber of the shell, the top surface of the gas collecting chamber having an air inlet notch; an air distribution channel placed on the top plate of the shell, the air distribution channel corresponding to the gas collecting chamber, with a gap between the bottom of the air distribution channel and the bottom of the gas collecting chamber; and a disperser placed on the outer side of the top plate of the shell and connected to the air distribution channel.

[0006] The gap between the bottom of the gas distribution channel and the bottom of the gas collection chamber is 5mm-10mm.

[0007] The air intake slot is provided with a slide rail, and the left side plate of the housing is provided with an opening that matches the air intake slot. The opening is also provided with a slide groove that matches the slide rail.

[0008] The housing, air inlet slot, air collection chamber, air inlet port, gas buffer chamber, gas distribution channel, and disperser are an integral structure.

[0009] The air outlets on the side of the air inlet slot are on the same horizontal plane.

[0010] Overflow holes are provided below the front and rear side plates of the housing.

[0011] The beneficial effects of this utility model are as follows: Since the membrane curtain and the large-bubble pulse aeration device of this membrane module are detachably connected, installation is convenient and separate construction is no longer required, saving a significant amount of manpower. Furthermore, the aeration device uses a large-bubble pulse aeration device with an air inlet at the top of the gas collection chamber, which is closed on all sides and bottom. Gas enters the top of the gas collection chamber through the air inlet and gradually accumulates and compresses. The increasing amount of gas causes the gas-liquid interface to gradually move downwards until the gas enters the gas distribution channel. Once inside the gas distribution channel, a siphon effect is formed, allowing the gas to quickly reach the disperser and form large bubbles that flow upwards from both sides of the lower water collection chamber, scouring the membrane fibers in the membrane curtain. The siphon effect also causes liquid to rapidly flow into the gas collection chamber. This repeated process creates pulse-like large bubbles that stimulate the membrane fibers. The rinsing process involves large bubbles bursting, which induces localized turbulence in the fluid, creating shear and disturbance forces on the membrane fiber surface. The larger the bubble, the greater the impact force, resulting in a better purging effect on the membrane fiber. Furthermore, the structure of the gas collection chamber ensures that the gas pressure reaching the gas distribution channel is essentially uniform, preventing uneven gas distribution. The air inlet channel is located on the right side of the frame and extends to the lower end of the frame, connecting to the air inlet of the pulse aeration device. This allows the gas to be directly delivered to the large bubble pulse aeration device, eliminating the space occupied by the main pipeline in traditional equipment structures and reducing costs and installation expenses. The buffer chamber collects the gas delivered from the air inlet channel and delivers it to the air inlet trough, avoiding uneven gas distribution caused by the downward momentum of the gas. Attached Figure Description

[0012] The structure of this utility model, as well as its further objectives and advantages, will be better understood from the following description taken in conjunction with the accompanying drawings, wherein like reference numerals identify like elements:

[0013] Figure 1 This is an exploded view of an embodiment of the present invention;

[0014] Figure 2 yes Figure 1 The structural cross-sectional view of the embodiment shown;

[0015] Figure 3 yes Figure 1 Side view and enlarged partial view of the embodiment shown. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings.

[0017] Reference Figures 1 to 3In this embodiment, a membrane module includes: a membrane curtain 1, which includes a frame 3 with an upper water collection chamber 4 and a lower water collection chamber 5, and membrane fibers 8 placed between the upper water collection chamber 4 and the lower water collection chamber 5. The frame 3 has a permeate channel 6 communicating with the upper and lower water collection chambers on its left side and an air inlet channel 7 on its right side. A large bubble pulse aeration device 9 is located below the membrane curtain. The large bubble pulse aeration device has an air inlet 10 on its top right side, which is compatible with the air inlet channel 7 on the right side of the membrane frame 3. The large bubble pulse aeration device includes: a housing 11, which includes a front side plate, a rear side plate, a left side plate, a right side plate, and a top plate. The housing has an open-bottom left chamber 12 and a closed-bottom gas buffer chamber 13 located on its right side. The gas buffer chamber 13 communicates with the air inlet 10, and the gas buffer chamber 13 has an air outlet 15 on a side wall shared with the left chamber 12. An air inlet 13 is slidably connected to the housing and embedded in the left chamber. The air inlet 16 is a rectangular groove with an opening at the bottom. An air inlet pipe 17 is provided at one end of the air inlet 16, and an air outlet 18 is provided on the side of the air inlet 16. The air inlet pipe 17 matches the air outlet 15 of the gas buffer chamber 13. A gas collecting chamber 19 is fixed to the top plate of the housing and extends into the left chamber inside the housing. An air inlet notch 20 is provided on the top surface of the gas collecting chamber 19. A gas distribution channel 21 is placed on the top plate of the housing. The gas distribution channel 21 is correspondingly arranged with the gas collecting chamber 19, and there is a gap between the bottom of the gas distribution channel 21 and the bottom of the gas collecting chamber 19. A diffuser 22 is placed on the outer side of the top plate of the housing and communicates with the gas distribution channel. In this embodiment, a fixed plug 14 is provided on the top left side of the housing. The air inlet 10 is also in the form of a fixed plug. A slot 27 matching the fixed plug 14 is provided on the bottom left side of the frame 3. The end of the air inlet channel 7 on the right side of the frame is also in the form of a slot. In this way, the membrane curtain 1 and the large bubble pulse device are detachably connected. In practical applications, the membrane curtain 1 and the large bubble pulse aeration device 9 can also be detachably connected by means of double-ended studs, bolts and nuts, etc.

[0018] In addition, in this embodiment, the gap between the bottom of the air distribution channel 21 and the bottom of the air collection chamber 19 is 5mm-10mm; a slide rail 23 is provided on the air inlet groove 16, and an opening 24 matching the air inlet groove is provided on the left side plate of the housing, and a slide groove 25 matching the slide rail is also provided at the opening; the air outlet 18 on the side of the air inlet groove 16 is on the same horizontal plane. Overflow holes 26 are provided below the front and rear side plates of the housing.

[0019] Because the membrane curtain 1 and the large bubble pulse aeration device 9 of this membrane module are detachably connected, installation is convenient and separate construction is no longer required, saving a lot of manpower. In addition, the aeration device adopts the large bubble pulse aeration device 9. The air collection chamber 19 is provided with an air inlet 20 at the top, and is closed on all sides and at the bottom. The gas enters the top of the air collection chamber from the air inlet 20 and gradually gathers and compresses. The increasing amount of gas causes the gas-liquid interface to gradually move downward until the gas enters the gas distribution channel 21. After the gas enters the gas distribution channel 21, a siphon phenomenon is formed, which allows the gas to quickly reach the disperser 22 and form large bubbles that flush the membrane fibers 8 in the membrane curtain 1 from both sides of the lower water collection chamber 5. The occurrence of the siphon phenomenon also causes the liquid to rush into the air collection chamber 19 quickly. This process is repeated to form pulse-like large bubbles that scrub the membrane fibers 8. The bursting of bubbles causes local turbulence in the fluid, creating shear force and disturbance on the surface of the membrane fiber 8. The larger the bubble volume, the greater the impact force, which in turn achieves a better purging effect on the membrane fiber. Moreover, the structure of the gas collection chamber 19 ensures that the gas pressure reaching the gas distribution channel 21 is basically the same, preventing uneven gas distribution. The air inlet channel 7 is located on the right side of the frame 3 and extends to the lower end face of the frame 3 to form a slot. After connecting with the air inlet port 10 of the large bubble pulse aeration device 9, the gas can be directly delivered to the large bubble pulse aeration device, eliminating the space occupied by the main pipeline in the traditional equipment structure and reducing the cost and installation cost. The buffer chamber 13 collects the gas delivered by the air inlet channel 7 and delivers it to the air inlet slot 16, avoiding uneven gas distribution caused by the downward momentum of the gas.

[0020] In addition, a slide rail 23 is provided on the air inlet groove 16, and an opening 24 matching the air inlet groove 16 is provided on the left side plate of the housing 11. A sliding groove 25 matching the slide rail 23 is also provided at the opening 24. The air inlet pipe 17 on the air inlet groove 16 is matched with the air outlet 15 of the gas buffer chamber 13. This structure is easy to install. The lower end of the air inlet groove 16 is open, which overcomes the problem of mud accumulation and blockage in the perforated pipe. The air outlets 18 on the side of the air inlet groove 16 are on the same horizontal plane. Gas enters from the air inlet pipe 17 through the gas buffer chamber and is concentrated and compressed at the top of the air inlet groove 16. When the gas-liquid interface reaches the position of the air outlet 18, the gas pressure at the air outlet 18 is basically the same, realizing the uniform distribution of gas by the air inlet groove 16. Overflow holes 26 are provided below the front and rear side plates of the housing 11. When the gas distribution channel 21 is blocked, the gas fills the left chamber 12 inside the housing. When it reaches the overflow hole 26, it is uniformly aerated by the overflow hole 26.

[0021] In practical applications, the shell 11, air inlet groove 16, air collection chamber 19, air inlet 10, gas buffer chamber 13, gas distribution channel 21, and disperser 22 are integral structures, integrally molded with materials such as ABS and polyvinyl chloride, which have the advantages of easy molding, high strength, and corrosion resistance, and are more suitable for sewage treatment.

[0022] The technical content and features of this utility model have been disclosed above. However, it is understood that, under the creative concept of this utility model, those skilled in the art can make various changes and improvements to the above structure, including combinations of the technical features disclosed or claimed herein, as well as other combinations that clearly include these features. All such modifications and / or combinations fall within the technical field to which this utility model relates and within the protection scope of the claims of this utility model.

Claims

1. A membrane module, characterized in that... include: A membrane curtain, comprising a frame with an upper water collection chamber and a lower water collection chamber, and membrane fibers placed between the upper and lower water collection chambers, wherein a water production channel communicating with the upper and lower water collection chambers is provided on the left side of the frame, and an air intake channel is provided on the right side of the frame; The large bubble pulse aeration device is located below the membrane curtain. The top right side of the large bubble pulse aeration device has an air inlet, which is compatible with the air inlet channel on the right side of the membrane frame. The large bubble pulse aeration device and the bottom of the membrane curtain frame are detachably connected.

2. The membrane module as described in claim 1, characterized in that... The large bubble pulse aeration device includes: The housing includes a front panel, a rear panel, a left panel, a right panel, and a top panel. The housing has an open-bottom left chamber and a closed-bottom gas buffer chamber located on the right side. The gas buffer chamber is connected to the air inlet and has an air outlet on the side wall shared with the left chamber. An air inlet slot is slidably connected to the housing and embedded in the left chamber. The air inlet slot is a rectangular slot with an opening at the bottom. An air inlet pipe is provided at one end of the air inlet slot, and an air outlet is provided on the side of the air inlet slot. The air inlet pipe is matched with the air outlet of the gas buffer chamber. A gas collecting chamber fixed to the top plate of the housing and extending into the left chamber inside the housing, wherein the top surface of the gas collecting chamber is provided with an air inlet notch; An air distribution channel is placed on the top plate of the housing, and the air distribution channel and the air collection chamber are correspondingly arranged, with a gap between the bottom of the air distribution channel and the bottom of the air collection chamber; A diffuser located on the outer side of the top plate of the housing and connected to the gas distribution channel.

3. The membrane module as described in claim 2, characterized in that: The gap between the bottom of the gas distribution channel and the bottom of the gas collection chamber is 5mm-10mm.

4. The membrane module as described in claim 2, characterized in that: The air intake slot is provided with a slide rail, and the left side plate of the housing is provided with an opening that matches the air intake slot. The opening is also provided with a slide groove that matches the slide rail.

5. The membrane module as described in claim 2, characterized in that: The housing, air inlet slot, air collection chamber, air inlet port, gas buffer chamber, gas distribution channel, and disperser are an integral structure.

6. The membrane module as described in claim 2, characterized in that: The air outlets on the side of the air inlet slot are on the same horizontal plane.

7. The membrane module according to any one of claims 2 to 6, characterized in that: Overflow holes are provided below the front and rear side plates of the housing.

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