Durable MBR (Membrane Bioreactor) membrane assembly

Abstract

The utility model discloses a durable MBR (Membrane Biological Reactor) membrane. The durable MBR membrane comprises brackets, wherein at least two horizontal brackets are connected between supporting legs; the number of the fixing strips is multiple, and the two ends of each fixing strip are fixed to the two adjacent horizontal supports respectively; wherein the fixed strip is provided with a fixed groove, the fixed groove is arranged along the length direction of the fixed strip, and an MBR (Membrane Bioreactor) membrane is embedded in the fixed groove; the liquid inlet pipes are arranged above the horizontal bracket, and the number of the liquid inlet pipes is multiple; and at least one liquid inlet pipe extends into the bracket. The outlet end of the liquid inlet pipe is arranged in the bracket or is spaced by a filter screen, so that impact force and pressure are reduced, the surface of the film is effectively protected, and the service life of the film is prolonged. And the second liquid inlet pipe is arranged in the bracket, so that the fluid circulation and mixing effects can be improved, and the distribution and circulation effects of the fluid in the MBR membrane component are optimized through the combined arrangement of the vertical pipeline and the horizontal pipeline.

Description

Technical Field

[0001] The utility model belongs to the technical field of MBR equipment, and particularly relates to a durable MBR membrane component. Background Art

[0002] MBR membrane is a new type of wastewater treatment equipment that closely combines separation technologies such as ultrafiltration membrane and hollow fiber membrane with membrane bioreactor in wastewater treatment. It combines the advantages of membrane solution technology and microbial solution technology, and can completely replace the secondary grit chamber. In the bioreactor inside the MBR membrane, a large amount of activated sludge and biofilm are filled. When the sewage enters the bioreactor, the organic matter in it is taken up by microorganisms and converted into new cell substances and harmless substances such as carbon dioxide under the action of microorganisms. During the biological reaction process, microorganisms and suspended matter in the sewage will form a mixed liquid. Through the filtration of the MBR membrane, these mixed liquids are separated into two parts: one is clean water and the other is concentrated sludge. Clean water can be discharged or reused after disinfection, while concentrated sludge can be reused or discharged after treatment.

[0003] Due to the large amount of impurities in sewage, the MBR membrane may be damaged in some cases, resulting in poor durability and short service life of the MBR membrane assembly. Utility Model Content

[0004] In view of the above problems, the utility model discloses a durable MBR membrane comprising: a bracket, the bracket having a plurality of legs, at least two horizontal brackets being connected between the legs; a fixing bar, the fixing bar being a plurality, the two ends of the fixing bar being respectively fixed to two adjacent horizontal brackets; wherein the fixing bar is provided with a fixing groove, the fixing groove being arranged along the length direction of the fixing bar, and the MBR membrane being embedded in the fixing groove; a liquid inlet pipe, the liquid inlet pipe being arranged above the horizontal bracket, the liquid inlet pipe comprising a plurality; wherein at least one of the liquid inlet pipes extends to the interior of the bracket.

[0005] In some exemplary technical solutions, the liquid inlet pipe includes a first liquid inlet pipe and a second liquid inlet pipe; the first liquid inlet pipe is externally connected to a liquid inlet device, and the outlet end of the first liquid inlet pipe is located above the horizontal bracket; one end of the second liquid inlet pipe passes through the horizontal bracket and extends into the bracket, and the other end is externally connected to a liquid inlet device.

[0006] In some exemplary technical solutions, a filter screen is further provided on the fixing bar, and the outlet end of the first liquid inlet pipe is located above the filter screen.

[0007] In some exemplary technical solutions, the opening of the second liquid inlet pipe is located in the central area of ​​the bracket, and a filter is provided at the end of the second liquid inlet pipe.

[0008] In some exemplary technical solutions, the second liquid inlet pipe includes a flange, which is used to connect to an external pipeline. The flange extends a vertical pipeline toward the bracket, and the filter is provided at the end of the vertical pipeline.

[0009] In some exemplary technical solutions, the end of the second liquid inlet pipe is located at 1 / 2 of the height of the bracket in the vertical direction.

[0010] In some exemplary technical solutions, the fixing bar includes a left fixing bar and a right fixing bar, and the left fixing bar and the right fixing bar are symmetrically arranged above the bracket; the horizontal bracket includes a frame horizontal bracket forming a rectangular frame above the bracket, and a central horizontal bracket arranged along the center line of the rectangular frame; the left fixing bar and the right fixing bar are both connected to the central horizontal bracket, and the vertical pipe passes through the horizontal bracket.

[0011] In some exemplary technical solutions, the fixing bars are arranged in an array along the length direction of the central horizontal support; the second liquid inlet pipe also extends a horizontal pipe, the horizontal pipe is buried in the central horizontal support, and the horizontal pipe extends a plurality of vertical pipes connected to the horizontal pipe; wherein the vertical pipes are arranged in an array along the length direction of the central horizontal support.

[0012] The effects are:

[0013] In the utility model, the outlet end of the liquid inlet pipe for introducing liquid is arranged inside the bracket or separated by a filter screen, so that the external liquid can evenly disperse the fluid into the MBR membrane assembly, thereby reducing the impact force and pressure on the membrane, effectively protecting the membrane surface and extending its service life. In addition, the second liquid inlet pipe is arranged inside the bracket to improve the fluid circulation and mixing effect. Through the combined arrangement of vertical pipes and horizontal pipes, the distribution and circulation effect of the fluid in the MBR membrane assembly are optimized. This structure not only improves the efficiency of wastewater treatment, but also simplifies the pipeline layout, making the entire system more compact and stable, and also enhances the convenience of maintenance and cleaning for operators.

[0014] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of a durable MBR membrane assembly according to an embodiment of the utility model is shown;

[0017] Figure 2 A side view of a durable MBR membrane assembly according to an embodiment of the utility model is shown;

[0018] Figure 3 Another angle schematic diagram of a durable MBR membrane assembly according to an embodiment of the utility model is shown.

[0019] In the attached figure:

[0020] 100- bracket, 110- upper rectangular frame, 120- lower rectangular frame, 130- legs;

[0021] 200-fixing bar, 210-filter screen, 220-left fixing bar, 230-right fixing bar, 240-center horizontal bracket;

[0022] 300 - liquid inlet pipe, 310 - first liquid inlet pipe, 320 - second liquid inlet pipe, 321 - vertical pipe, 330 - filter;

[0023] 400-flange;

[0024] 500-MBR membrane. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] First embodiment:

[0027] This embodiment discloses a durable MBR membrane assembly, including a bracket 100, a fixing bar 200 and a liquid inlet pipe 300. Figure 1For understanding, the MBR membrane assembly in this example has four legs 130, the tops of the legs 130 are connected by two horizontal brackets, specifically, the horizontal brackets include a frame horizontal bracket forming a rectangular frame above the bracket 100, and a central horizontal bracket 240 ( Figure 1 Not shown, combined Figure 3 For better explanation, the rectangular frame connected to the upper part of the legs 130 is defined as the upper rectangular frame 110. Figure 1 As shown, the lower area of ​​the leg 130 is also connected to two lower rectangular frames 120 .

[0028] The horizontal bracket is connected with a fixing bar 200. In this example, there are multiple fixing bars 200, and both ends of the fixing bar 200 are respectively fixed to two adjacent horizontal brackets. Figure 3 for understanding. The fixing bar 200 is provided in both the upper rectangular frame 110 and the lower rectangular frame 120. The fixing bar 200 is used to fix the MBR membrane 500. The specific fixing structure may be different in different situations. For example, the fixing bar 200 may be fixed by a snap-on structure. The snap-on structure may reduce damage to the fixing bar 200 and the MBR membrane 500. Specifically, a snap-on with an elastic element may be provided to enhance the fixing effect and shock resistance, and ensure the stability of the MBR membrane 500 during operation. For another example, an adjustable fixing clamp may be used, which may be adjusted according to actual needs to adapt to MBR membrane components of different sizes and shapes, thereby providing a quick release and locking function, making it more convenient and quick in actual operation.

[0029] In this example, the fixing bar 200 is provided with a fixing groove, which is arranged along the length direction of the fixing bar 200, and the MBR membrane 500 is embedded in the fixing groove. Specifically, the fixing groove is used to fix the MBR membrane 500 and facilitate its installation and removal. In some specific examples, the cross-section of the fixing groove is usually designed to be U-shaped or V-shaped to ensure that the MBR membrane 500 can be firmly embedded therein, while reducing the stress concentration of the diaphragm during the fixing process. In some preferred examples, in order to enhance the fixing effect, the inner wall of the fixing groove can be provided with a plurality of protrusions or depressions, which can increase the friction between the MBR membrane 500 and the fixing groove, thereby improving the stability of the fixing. More specifically, these protrusions or depressions can be evenly distributed on the inner wall of the fixing groove at a certain interval to form a multi-point support structure, which can effectively prevent the MBR membrane 500 from sliding and avoid damage to the diaphragm due to excessive force at a single point.

[0030] In some other specific examples, an elastic gasket may be provided in the fixing groove. In addition, in order to facilitate the installation and removal of the MBR membrane 500, in some specific structures, one side or both sides of the fixing groove may be an openable and closable structure. For example, a fixing groove wall on one side may be designed to be hinged, and the MBR membrane 500 may be quickly installed and removed by a simple opening and closing operation. In order to ensure the fixing effect after opening and closing, a locking device such as a spring lock or a spiral lock may be provided at the opening and closing end of the fixing groove, so that after closing the fixing groove, the MBR membrane 500 may be firmly fixed in the fixing groove and will not fall off due to vibration or other external forces.

[0031] Continue to refer Figure 1 As shown, the liquid inlet pipe 300 is arranged above the horizontal support, and part of the liquid inlet pipe 300 extends into the support 100. Specifically, the outlet end (i.e., the end) of the liquid inlet pipe 300 extends to the middle section of the MBR membrane 500 in the height direction. It can be understood that the outlet end of the liquid inlet pipe 300 is located in the middle section inside the support 100, so that the inlet fluid can be evenly distributed in the entire MBR membrane assembly. Generally, during the use of the MBR membrane 500, the membrane surface will be impacted and pressured by the inlet fluid. If the flow rate of the outlet of the liquid inlet pipe 300 is too fast, it is easy to cause the membrane in some areas to be subjected to excessive impact and pressure, thereby causing damage to the membrane. By placing the outlet end of the liquid inlet pipe 300 in the middle section inside the support 100, the fluid can be evenly dispersed by the structure inside the support 100 when entering the membrane assembly, reducing the impact force and pressure of the fluid, thereby protecting the MBR membrane 500 and extending its service life. Moreover, compared with the traditional structure, impurities and suspended matter in the fluid are easily concentrated in a certain area, causing a fouling layer to quickly form on the membrane surface around the area, affecting the filtration efficiency of the membrane. However, by inserting the outlet end of the inlet pipe 300 into the bracket 100, impurities and suspended matter in the fluid can be intercepted or dispersed by the structure inside the bracket 100 when entering the membrane assembly, thereby reducing fouling on the membrane surface and maintaining the long-term efficient operation of the membrane.

[0032] Finally, the outlet end of the liquid inlet pipe 300 is located in the middle section in the height direction, which can enhance the circulation and mixing effect of the fluid inside the membrane assembly. In the MBR membrane assembly, good fluid circulation and mixing help to improve the filtration efficiency and service life of the membrane. Specifically, after the inlet fluid enters the membrane assembly, it can quickly form a circulation flow inside the support 100, promote the shedding and renewal of dirt on the membrane surface, and avoid the accumulation of dirt on the membrane surface. At the same time, this circulation flow can also promote the mixing of fluids inside the membrane assembly, evenly distribute nutrients and dissolved oxygen in the fluid, which is conducive to the growth and metabolism of microorganisms, and further improve the filtration effect and durability of the membrane.

[0033] Second embodiment

[0034] Based on the first embodiment, the liquid inlet pipe 300 includes a plurality of liquid inlet pipes. In this example, the liquid inlet pipe 300 includes a first liquid inlet pipe 310 and a second liquid inlet pipe 320 .

[0035] Based on reference Figure 1 And combined with Figure 2 For understanding. The first liquid inlet pipe 310 is connected to a liquid inlet device, and the outlet end of the first liquid inlet pipe 310 is located above the horizontal support. A flange 400 is provided at one end of the first liquid inlet pipe 310 connected to the liquid inlet device. Specifically, the first liquid inlet pipe 310 is connected to the raw sewage or wastewater for treatment. The raw sewage or wastewater enters the first liquid inlet pipe 310 through the liquid inlet device, and is evenly distributed to the MBR membrane assembly through the first liquid inlet pipe 310. The raw sewage or wastewater is first pumped into the first liquid inlet pipe 310 through the liquid inlet device, and then evenly distributed inside the support 100 through its outlet end.

[0036] In this example, a filter screen 210 is further provided on the fixing bar 200, and the outlet end of the first liquid inlet pipe 310 is located above the filter screen 210. The filter screen 210 can be a filter screen 210 woven from high-strength metal wire or synthetic fiber to form evenly distributed meshes. For another example, the filter screen 210 can be composed of multiple layers of filter screens of different materials. For example, the outermost layer uses a coarse filter screen to intercept larger particles; the middle layer uses a fine filter screen to filter smaller particles; and the innermost layer uses an ultrafine filter screen to intercept the finest impurities.

[0037] It is understandable that the filter screen 210 is located at the outlet end of the first liquid inlet pipe 310, and can first intercept and filter out large particle impurities before the liquid enters the MBR membrane assembly. If these large particle impurities directly enter the MBR membrane assembly, they may cause mechanical damage to the membrane surface, increase the wear and pore clogging of the membrane surface, and thus shorten the service life of the membrane. By setting the filter screen 210, the entry of these large particle impurities can be effectively reduced, the membrane surface can be protected, and the service life of the MBR membrane 500 can be extended. In addition, if the suspended matter and organic matter in the liquid directly enter the MBR membrane assembly, it is easy to accumulate on the membrane surface to form a fouling layer, resulting in a decrease in the filtration efficiency of the membrane and an increase in the cleaning frequency of the membrane. The filter screen 210 can intercept a part of the suspended matter and organic matter before the liquid enters the membrane assembly, reduce their accumulation on the membrane surface, thereby reducing the fouling phenomenon on the membrane surface and maintaining the long-term efficient operation of the membrane.

[0038] One end of the second liquid inlet pipe 320 passes through the horizontal support and extends into the support 100, and the other end is connected to the liquid inlet device. The second liquid inlet pipe 320 is used to connect clean water and / or treatment liquid. The treatment liquid can be any treatment liquid used to treat sewage, for example, nutrients required for microbial growth can be injected into the MBR membrane assembly. The nutrient solution contains rich elements such as nitrogen and phosphorus, which are conducive to the reproduction and metabolism of microorganisms, enhance biodegradability, and improve wastewater treatment efficiency.

[0039] It is understandable that after the clean water and the treated liquid of the second liquid inlet pipe 320 enter the MBR membrane module, a good circulation and mixing effect needs to be formed inside the membrane module. Probing the second liquid inlet pipe 320 into the interior of the bracket 100 can ensure that the clean water and the treated liquid are evenly distributed inside the membrane module, effectively promote the circulation of the fluid, enhance the cleaning effect of the membrane surface, and reduce the accumulation of dirt on the membrane surface, thereby maintaining the efficient filtration performance of the membrane. For example, the nutrients in the treated liquid can be more evenly distributed inside the membrane module in this way, ensuring that the microorganisms grow and metabolize evenly throughout the membrane module, further improving the wastewater treatment efficiency.

[0040] Third embodiment

[0041] Based on the foregoing embodiments, in this example, the second liquid inlet pipe 320 also includes a flange 400 , which is used to connect to an external pipeline. The flange 400 extends a vertical pipeline 321 toward the bracket 100 , and the filter 330 is provided at the end of the vertical pipeline 321 .

[0042] Specifically, the filter 330 includes a filter housing, a filter core and a support structure. The filter housing is made of high-strength plastic or stainless steel, and has the characteristics of corrosion resistance and high pressure resistance. The shape of the filter housing is designed to be cylindrical or square to meet the requirements of different installation spaces. A water inlet is provided on the top of the housing, which is connected to the vertical pipe 321 of the second liquid inlet pipe 320 through a flange 400 to ensure smooth inflow of filtered liquid.

[0043] Inside the filter housing, there is a removable filter element. The outer wall of the filter element is composed of multiple layers of filter screens of different materials. The aperture of each layer of filter screens gradually decreases. From the outside to the inside, they are coarse filter screen, medium filter screen and fine filter screen. The coarse filter screen is used to intercept large particles of impurities, the medium filter screen filters smaller particles, and the fine filter screen intercepts the finest suspended matter and impurities. In order to improve the filtering effect, the outer layer of the filter element can also be covered with a layer of activated carbon fiber to absorb organic matter and chemical pollutants in the liquid.

[0044] In this example, the opening of the second liquid inlet pipe 320 is located in the central area of ​​the bracket 100, and a filter 330 is provided at the end of the second liquid inlet pipe 320; in some preferred embodiments, the end of the second liquid inlet pipe 320 is located at 1 / 2 of the height of the bracket 100 in the vertical direction.

[0045] Fourth embodiment

[0046] Based on the above embodiments, combined with Figure 1 As shown, the central horizontal support 240 is a strip-shaped structure arranged in the inner space of the upper rectangular frame 110 , and the second liquid inlet pipe 320 is arranged to pass through the central horizontal support 240 .

[0047] Further integration Figure 3 It is understood that the fixing bars 200 are arranged in an array along the length direction of the central horizontal bracket 240, and the fixing bars 200 include a left fixing bar 210 and a right fixing bar 220, and the left fixing bar 210 and the right fixing bar 220 are symmetrically arranged above the bracket 100, and each of the left fixing bar 210 and the right fixing bar 220 is provided with the MBR membrane 500 for fixing. Therefore, the MBR membrane 500 in the durable MBR membrane assembly in this embodiment is symmetrically arranged with the central horizontal bracket 240 as the symmetry axis, and the left fixing bar 210 and the right fixing bar 220 are both connected to the central horizontal bracket 240.

[0048] Fifth embodiment

[0049] The fifth embodiment is based on the above-mentioned embodiment and discloses a specific second liquid inlet pipe 320. In this example, the vertical pipe 321 of the second liquid inlet pipe 320 further extends a horizontal pipe, and these pipes are all arranged in the central horizontal support 240. Specifically, the horizontal pipe is buried inside the central horizontal support 240, and a plurality of the vertical pipes 321 extend from the central position to both sides. These vertical pipes 321 are arranged along the length direction of the central horizontal support 240 to form an integrated pipe network.

[0050] In the example, the distribution and circulation effect of the fluid inside the MBR membrane assembly can be further optimized by extending the horizontal pipeline and arranging the vertical pipeline 321. The arrangement of the horizontal pipeline allows the fluid to be evenly distributed from the center to the vertical pipelines 321, while the arrangement of the vertical pipelines 321 ensures the uniform dispersion of the fluid over the entire length of the support 100, thereby improving the efficiency of wastewater treatment and the service life of the MBR membrane assembly. In addition, this structure also simplifies the pipeline layout, making the system more compact and stable. Operators can perform maintenance and cleaning more conveniently, and the overall reliability of the system is also enhanced.

[0051] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A durable MBR membrane assembly, characterized in that: include: A support (100), the support (100) having a plurality of legs (130), at least two horizontal supports being connected between the legs (130); A fixing bar (200), wherein the fixing bar (200) is multiple, and two ends of the fixing bar (200) are respectively fixed to two adjacent horizontal brackets; wherein the fixing bar (200) is provided with a fixing groove, the fixing groove is arranged along the length direction of the fixing bar (200), and the MBR membrane (500) is embedded in the fixing groove; A liquid inlet pipe (300), wherein the liquid inlet pipe (300) is arranged above the horizontal support, and the liquid inlet pipe (300) comprises a plurality of liquid inlet pipes (300); wherein at least one of the liquid inlet pipes (300) extends to the interior of the support (100).

2. The durable MBR membrane assembly according to claim 1, characterized in that: The liquid inlet pipe (300) comprises a first liquid inlet pipe (310) and a second liquid inlet pipe (320); The first liquid inlet pipe (310) is externally connected to a liquid inlet device, and the outlet end of the first liquid inlet pipe (310) is located above the horizontal support; One end of the second liquid inlet pipe (320) passes through the horizontal support and extends into the support (100), and the other end is connected to an external liquid inlet device.

3. The durable MBR membrane assembly according to claim 2, characterized in that: A filter screen (210) is also provided on the fixing bar (200), and the outlet end of the first liquid inlet pipe (310) is located above the filter screen (210).

4. The durable MBR membrane assembly according to claim 3, characterized in that: The opening of the second liquid inlet pipe (320) is located in the central area of ​​the bracket (100), and a filter (330) is provided at the end of the second liquid inlet pipe (320).

5. The durable MBR membrane assembly according to claim 4, characterized in that: The second liquid inlet pipe (320) comprises a flange (400) for connecting to an external pipeline. The flange (400) extends a vertical pipeline (321) toward the bracket (100). The filter (330) is provided at the end of the vertical pipeline (321).

6. The durable MBR membrane assembly according to claim 4, characterized in that: The end of the second liquid inlet pipe (320) is located at 1 / 2 of the height of the bracket (100) in the vertical direction.

7. The durable MBR membrane assembly according to claim 5, characterized in that: The fixing bar (200) comprises a left fixing bar (200) and a right fixing bar (200), and the left fixing bar (200) and the right fixing bar (200) are symmetrically arranged above the bracket (100); The horizontal support (100) comprises a frame horizontal support forming a rectangular frame above the support (100), and a central horizontal support (240) arranged along the center line of the rectangular frame; The left fixing bar (200) and the right fixing bar (200) are both connected to a central horizontal support (240), and the vertical pipe (321) passes through the horizontal support.

8. The durable MBR membrane assembly according to claim 7, characterized in that: The fixing bars (200) are arranged in an array along the length direction of the central horizontal bracket (240); The second liquid inlet pipe (320) further extends a horizontal pipe, the horizontal pipe is buried in the central horizontal support (240), and the horizontal pipe extends a plurality of vertical pipes (321) connected to the horizontal pipe; Wherein, the vertical pipes (321) are arranged in an array along the length direction of the central horizontal support (240).

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