MBR (Membrane Biological Reactor) membrane aeration pipe
The MBR membrane aeration pipe with an elliptical cross section and double-layer holes, along with a strip slit, addresses tube blockage issues, ensuring balanced and efficient aeration by preventing liquid ingress and utilizing both layers for air outlet, enhancing scrubbing effectiveness.
Patent Information
- Application Number
- CN202323050254.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-13
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2033-11-13
AI Technical Summary
Traditional MBR membrane aeration tubes are prone to blockage due to the entry of mixed liquid, leading to uneven aeration and reduced scrubbing effectiveness when aeration is restarted, as the large specific gravity of the mixed liquid hinders the discharge of internal liquid.
The MBR membrane aeration pipe features an elliptical cross section with two-layer aeration holes, one layer at the short radius and the other obliquely below, and a strip slit at the bottom to prevent blockage, ensuring balanced aeration by allowing air to form a larger air chamber and utilizing both layers for air outlet during pulse aeration.
Prevents blockage of the aeration tube by connecting with mixed liquid, enhances aeration balance through an elliptical structure and double-layer holes, and accommodates high gas volume during pulse aeration.
Smart Images
Figure CN222138839U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a water treatment equipment component, in particular to an MBR membrane aeration pipe. Background Art
[0002] As a sewage deep treatment process, MBR process has the advantages of small footprint, good treatment effect and stable effluent quality.
[0003] MBR membrane components are the core of MBR technology, and membrane pollution is an important factor that determines the operation of MBR technology. Air scrubbing of the membrane surface is an important way to solve membrane pollution. The cross flow on the membrane surface is generated by air agitation. The mixed liquid flows upward with the air flow, generating shear stress on the membrane surface. Under the action of this shear stress, the particles deposited on the membrane surface are easy to detach from the membrane surface.
[0004] Traditional air scrubbing is achieved by using membrane aeration tubes in MBR. The MBR membrane aeration tubes are round tubes with aeration holes, that is, the aeration holes are spaced 45 degrees below the round tube. The disadvantage of this aeration tube is that when aeration is stopped, the mixed liquid enters the aeration tube and blocks the aeration tube. When aeration is started again, some aeration holes do not emit air. Due to the large specific gravity of the mixed liquid, it is difficult for excess air to discharge the internal mixed liquid, which will cause uneven aeration and affect the scrubbing effect of the membrane surface. Utility Model Content
[0005] The technical problem to be solved by the utility model is to provide an MBR membrane aeration pipe, and the technical scheme adopted is: an MBR membrane aeration pipe, which comprises an aeration pipe body and aeration holes located on the aeration pipe body, wherein a strip slit is opened at the bottom of the aeration pipe.
[0006] The further technical features of the utility model are:
[0007] The cross section of the aeration pipe is elliptical.
[0008] The aeration holes are arranged in two layers, one layer is located on the plane where the short radius of the ellipse of the aeration pipe section is located, and the other layer is located on the plane obliquely 45 degrees below the short radius of the ellipse of the aeration pipe section.
[0009] The beneficial effects of the utility model are:
[0010] Since there is a strip slit at the bottom of the MBR membrane aeration tube, the aeration tube is connected to the mixed liquid and will not be blocked.
[0011] The MBR membrane aeration tube adopts an elliptical structure, which has a larger volume than the circular aeration tube, which is conducive to the formation of an air chamber at the top. More air can ensure the level of the interface between the air and the mixed liquid, making the aeration more balanced.
[0012] The MBR membrane aeration tube adopts a double-layer aeration hole structure. The upper aeration hole is located at the end point of the short radius of the ellipse, and the lower layer is located 45° obliquely below the short radius of the ellipse. Conventionally, the upper aeration holes are used for air outlet, and the released bubbles are relatively large. During pulse aeration, the upper and lower aeration holes are used for air outlet at the same time, which is conducive to meeting the situation where the instantaneous gas volume is too large during pulse aeration. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;
[0014] Figure 2 yes Figure 1 Section view in . DETAILED DESCRIPTION
[0015] The utility model is described in more detail below in conjunction with the accompanying drawings.
[0016] Reference Figure 1-Figure 2 , an MBR membrane aeration tube, which comprises an aeration tube body 1 and an aeration hole 2 located on the aeration tube body, wherein a strip slit 3 is opened at the bottom of the aeration tube.
[0017] In this embodiment, the aeration tube has an elliptical cross section, and the aeration holes are arranged in two layers, one layer is located on the plane where the short radius of the ellipse of the aeration tube cross section is located, and the other layer is located on the plane 45° obliquely below the short radius of the ellipse of the aeration tube cross section.
[0018] Since a strip seam 3 is provided at the bottom of the MBR membrane aeration tube, the aeration tube is connected with the mixed liquid and will not be blocked; the MBR membrane aeration tube adopts an elliptical structure, which has a larger volume than a circular aeration tube, which is conducive to the formation of an air chamber at the top. More air can ensure the level of the interface between the air and the mixed liquid, making the aeration more balanced; the MBR membrane aeration tube adopts a double-layer aeration hole structure, the upper aeration hole is located at the end point of the short radius of the ellipse, and the lower layer is located 45° obliquely below the short radius of the ellipse. Conventionally, the upper aeration hole is used for air outlet, and the released bubbles are larger. During pulse aeration, the upper and lower aeration holes are used for air outlet at the same time, which is conducive to meeting the situation where the gas volume is too large at the moment of pulse aeration.
[0019] The technical content and technical features of the utility model have been disclosed as above, but it can be understood that under the spirit of the utility model, that is, the creative idea, technicians in this field can make various changes and improvements to the above-mentioned structure, including combinations of technical features disclosed or claimed separately here, and other combinations that obviously include these features. These deformations and / or combinations all fall within the technical field involved in the utility model and fall within the scope of protection of the claims of the utility model.
Claims
1. An MBR membrane aeration tube, comprising an aeration tube body and aeration holes located on the aeration tube body, characterized in that: The cross section of the aeration pipe is elliptical and a strip-shaped seam is provided at the bottom of the aeration pipe.
2. The MBR membrane aeration tube according to claim 1, characterized in that The aeration holes are arranged in two layers, one layer is located on the plane where the short radius of the ellipse of the aeration pipe section is located, and the other layer is located on the plane obliquely 45 degrees below the short radius of the ellipse of the aeration pipe section.