A MBR flat membrane support element

Abstract

The utility model belongs to the MBR flat membrane manufacturing field, concretely relates to a kind of MBR flat membrane supporting element.The supporting element includes support layer and surface layer, surface layer is arranged on the outer surface of support layer, and hole is equipped on surface layer;The support layer is net structure.The utility model is used to make membrane element, can improve water flux, reduce membrane element thickness and production cost.

Description

Technical Field

[0001] This utility model belongs to the field of MBR flat sheet membrane manufacturing, specifically relating to a 3D woven MBR flat sheet membrane support element. Background Technology

[0002] With increasingly stringent wastewater treatment standards and rising demands for resource recovery, membrane bioreactor (MBR) technology has become the mainstream choice in wastewater treatment and reuse due to its advantages such as high effluent quality and small footprint. Among them, flat-sheet membrane modules are considered an important future development direction for MBR membranes due to their strong resistance to fouling and stable operation.

[0003] However, despite the significant advantages of MBR flat sheet membrane technology, the following key bottlenecks still exist in its practical engineering applications: 1. Low packing density and large footprint; 2. High gas-to-water ratio and high energy consumption; 3. Frequent chemical cleaning and high reagent consumption; which seriously restricts market promotion and large-scale application. Summary of the Invention

[0004] In view of this, the purpose of this utility model is to provide an MBR flat sheet membrane support element that can improve the packing density and reduce the production cost and operating expenses of the membrane element.

[0005] The technical solution adopted in this utility model is as follows:

[0006] An MBR flat sheet membrane support element includes a support layer and a surface layer, wherein the surface layer is disposed on the outer surface of the support layer and has holes thereon; the support layer has a mesh structure.

[0007] The support layer is formed by winding and / or tying fine filaments together. The thickness of the support layer is 1.0-2.0 mm.

[0008] The filaments have a circular cross-section with a diameter of 0.1-1.0 mm and a gap of 0.2-2.0 mm between them.

[0009] The thickness of the surface layer is 0.1-1.0 mm, and the nominal pore diameter is 1-10 μm.

[0010] The support layer is composed of multiple helical units, which are fixedly connected to each other. The annular diameter of the helical unit is 1.0-2.0 mm, and the pitch is 0.2-2.0 mm.

[0011] Multiple spiral units can be formed in one piece, or they can be connected together by threading or gluing.

[0012] Multiple spiral units can be arranged in an intersecting manner or side by side.

[0013] The supporting layer filaments and surface layer can be made of materials such as PET, PP, or 304 stainless steel.

[0014] The surface layer material and the support layer filament material can be the same or different.

[0015] Compared with the prior art, the beneficial technical effects of the present invention are:

[0016] 1. This utility model employs a support layer composed of fine filaments bound together in a mesh structure. The gaps between the filaments serve as water flow channels, and the filaments are intertwined to form a stable mesh structure, providing sufficient support to prevent flow channel compression due to negative pressure operation of the equipment. The cross-sectional shape of the mesh structure is circular, arched, honeycomb, or grid-like. The compressive strength of the mesh surface is not less than 1 kgf / cm². 2 .

[0017] 2. The reasonable setting of the filament gaps in this utility model can ensure the effective filtration area of ​​the membrane and the smooth flow of water after passing through the membrane.

[0018] 3. The present invention has a surface layer, which ensures that the membrane does not come into direct contact with the support layer during use, thereby reducing the wear of the membrane.

[0019] 4. The choice of filament material is relatively flexible, which can coordinate different priorities such as equipment lifespan and production cost.

[0020] 5. The MBR flat sheet membrane obtained by using this utility model can reduce production costs and operating expenses, increase the packing density of the flat sheet membrane, and save floor space; the thickness of the MBR flat sheet membrane support element is reduced, which can reduce the gas-water ratio. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the MBR flat sheet membrane support element;

[0022] Figure 2 This is a cross-sectional view of the MBR flat sheet membrane support element in Example 2;

[0023] Figure 3 This is a cross-sectional view of the MBR flat sheet membrane support element in Example 3. Detailed Implementation

[0024] The following examples illustrate specific implementations of the present invention. However, these examples are merely for illustrative purposes and do not limit the scope of the invention in any way.

[0025] Example 1:

[0026] like Figure 1 As shown, the MBR flat sheet membrane support element includes a support layer 1 and a surface layer 2. The surface layer 2 is disposed on the outer surface of the support layer 1 and has holes.

[0027] The support layer 1 is composed of multiple spiral units, which are fixedly connected to each other. The spiral units are formed by pulling together fine filaments, and the gaps between the filaments form water flow channels.

[0028] The filaments have a circular cross-section with a diameter of 1.0 mm, and the gaps between the filaments are 0.2-2.0 mm. The thickness of surface layer 2 is 1.0 mm, and the nominal pore diameter is 1-10 μm.

[0029] The thickness of the support layer is 2.0 mm. The annular diameter of the spiral unit is 1.0-2.0 mm, and the pitch is 0.2-2.0 mm.

[0030] The supporting layer filaments are made of PET, and the surface layer is also made of PET.

[0031] Example 2

[0032] like Figure 2 As shown, unlike Example 1, the cross-section of the support layer 2 is honeycomb.

[0033] Example 3

[0034] like Figure 3 As shown, unlike Example 1, the cross-section of the support layer 2 is grid-shaped.

[0035] In Examples 1-3, a membrane is installed outside the support element to form an MBR flat sheet membrane. Water flows through the membrane and easily passes through the filter shell to enter the gap between the filaments and then flows out. The water flow remains unobstructed, and the water outlet can be flexibly set as needed.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention, as long as they do not depart from the spirit and scope of the technical solutions of the present invention, should be covered within the scope of the claims of the present invention.

Claims

1. A flat-sheet membrane support element for MBR, characterized in that: It includes a support layer and a surface layer, with the surface layer disposed on the outer surface of the support layer and having holes thereon; the support layer has a mesh structure.

2. The MBR flat sheet membrane support element according to claim 1, characterized in that: The support layer is formed by winding and / or tying filaments together.

3. The MBR flat sheet membrane support element according to claim 2, characterized in that: The filaments have a circular cross-section with a diameter of 0.1-1.0 mm and a gap of 0.2-2.0 mm between them.

4. The MBR flat sheet membrane support element according to claim 2, characterized in that: The thickness of the surface layer is 0.1-1.0 mm, and the nominal pore diameter is 1-10 μm.

5. The MBR flat sheet membrane support element according to claim 2, characterized in that: The support layer is composed of multiple spiral units, and adjacent spiral units are fixedly connected.

6. The MBR flat sheet membrane support element according to claim 2, characterized in that: The cross-section of the support layer is honeycomb-shaped.

7. The MBR flat sheet membrane support element according to claim 2, characterized in that: The cross-section of the support layer is grid-like.

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