CN219670254U - Back washing rigid flat-plate MBR (Membrane biological reactor) membrane module capable of being pressurized - Google Patents
Back washing rigid flat-plate MBR (Membrane biological reactor) membrane module capable of being pressurized Download PDFInfo
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- CN219670254U CN219670254U CN202320544653.0U CN202320544653U CN219670254U CN 219670254 U CN219670254 U CN 219670254U CN 202320544653 U CN202320544653 U CN 202320544653U CN 219670254 U CN219670254 U CN 219670254U
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- membrane
- surface bonding
- film surface
- bonding wire
- aeration
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- 239000012528 membrane Substances 0.000 title claims abstract description 162
- 238000011001 backwashing Methods 0.000 title abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- 238000005273 aeration Methods 0.000 claims abstract description 32
- 238000009991 scouring Methods 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 claims abstract description 3
- 239000004744 fabric Substances 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000000737 periodic effect Effects 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 description 6
- 238000003466 welding Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 239000012510 hollow fiber Substances 0.000 description 2
- 239000010842 industrial wastewater Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 239000004831 Hot glue Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model discloses a pressurized backwashing rigid flat-plate MBR membrane assembly, which comprises a membrane frame, a water production pipeline, an aeration pipeline and a plurality of membrane elements, wherein the membrane elements are vertically arranged in the membrane frame at equal intervals in parallel, the aeration pipeline comprises an aeration main pipe and a plurality of aeration branch pipes which are communicated with each other, and the aeration branch pipes are arranged below the membrane elements so as to perform aeration scouring on the membrane elements. According to the utility model, by arranging the first and second membrane surface bonding wires, the bonding force of the organic membrane and the supporting plate can be effectively increased, so that the rigid flat MBR membrane element can bear the pressure of the pressurized backwash, and periodic pressurized backwash and maintenance cleaning are realized, thereby slowing down membrane pollution and prolonging the chemical cleaning period.
Description
Technical Field
The utility model particularly relates to a backwash rigid flat-plate MBR membrane assembly capable of being pressurized.
Background
At present, the MBR technology of the immersed membrane bioreactor is mostly applied to the fields of sewage treatment, such as urban sewage treatment and recycling, high-concentration organic wastewater, nondegradable industrial wastewater, wastewater in public sensitive sanitary areas and the like. The main functional components are a bioreactor and a membrane assembly. Among these, the rigid flat-plate MBR membrane element and the hollow fiber MBR membrane element are two of the most commonly used MBR membrane elements in a membrane module. The rigid plate MBR membrane element overcomes the defects of easy wire breakage, easy mud accumulation and difficult cleaning of the hollow fiber MBR membrane element, and has better membrane flux and pollution resistance, so the rigid plate MBR membrane element has certain advantages in the aspect of difficult industrial wastewater treatment.
The size of the rigid flat-plate MBR membrane element is larger, membrane pollution is relieved only by virtue of aeration scouring in the operation process, but aeration can have various common conditions such as aeration dead angles, insufficient aeration quantity or blockage of an aeration pipeline, if the aeration dead angles, insufficient aeration quantity or blockage of the aeration pipeline are not treated in time, serious pollution of the rigid flat-plate MBR membrane element can be caused, and even the whole MBR system cannot normally operate. In the prior art, the membranes in the membrane element of the rigid flat plate MBR are welded on two sides of the rigid supporting plate through continuous welding lines at the edges. If the backwashing is carried out under pressure, the continuous welding lines at the edges are likely to be damaged or fall off due to excessive pressure, so that the quality of produced water is affected. Therefore, most of the rigid flat-plate MBR membrane elements cannot be backwashed under pressure and cannot be cleaned maintainably, so that means for performing anti-pollution operation on the membrane elements are limited.
Disclosure of Invention
The utility model aims to provide a pressurized backwash rigid flat-plate MBR membrane assembly.
The technical scheme of the utility model is as follows:
a membrane module of a pressurized backwash rigid flat plate MBR comprises a membrane frame, a water production pipeline, an aeration pipeline and a plurality of membrane elements, wherein the plurality of membrane elements are vertically arranged in the membrane frame at equal intervals in parallel, the aeration pipeline comprises an aeration main pipe and a plurality of aeration branch pipes which are communicated with each other, the plurality of aeration branch pipes are arranged below the plurality of membrane elements to perform aeration scouring on the membrane elements,
wherein each membrane element comprises a supporting plate, a plurality of flow passages, water producing diversion cloth and organic membranes are sequentially arranged on two sides of the supporting plate from inside to outside, one end of the supporting plate is provided with a water inlet and outlet passage communicated with the water producing pipeline, the edges of the organic membranes and the water producing diversion cloth are fixedly connected with the edges of the supporting plate in a sealing way through continuous bonding wires at the edges, the organic membranes and the supporting plate enclose a water producing cavity, the water producing cavity is communicated with the water inlet and outlet passage,
also comprises a plurality of first film surface bonding wires and a plurality of second film surface bonding wires,
the first membrane surface bonding wires are uniformly and parallelly staggered on the upper half part of the organic membrane, and each first membrane surface bonding wire fixedly connects the organic membrane and the produced water guide cloth on the supporting plate and is separated from the flow channel;
the second membrane surface bonding wires are uniformly and parallelly staggered on the lower half part of the organic membrane, and each second membrane surface bonding wire fixedly connects the organic membrane and the produced water guide cloth on the supporting plate and is separated from the flow channel;
the spacing between the first film surface bonding wires parallel to each other is larger than the spacing between the second film surface bonding wires partially parallel to each other.
In a preferred embodiment of the utility model, the spacing of the second film face weld lines of the portions parallel to each other is 1-20cm.
Further preferably, the pitch of the first film surface bonding wires parallel to each other is 1.5 to 5 times the pitch of the second film surface bonding wires parallel to each other in the portion.
In a preferred embodiment of the present utility model, the width of the first film face bonding line and the width of the second film face bonding line are both smaller than the width of the edge continuous bonding line.
Further preferably, the width of the first film surface bonding wire is equal to the width of the second film surface bonding wire.
Still more preferably, the width of the first film surface bonding wire and the width of the second film surface bonding wire are 1-10mm.
In a preferred embodiment of the present utility model, the contact between the first film surface bonding wire and the support plate is continuous or intermittent, and the contact between the second film surface bonding wire and the support plate is continuous or intermittent.
In a preferred embodiment of the present utility model, the first film surface bonding wire is linear or arcuate, and the second film surface bonding wire is linear or arcuate
The beneficial effects of the utility model are as follows:
1. according to the utility model, the bonding force between the organic membrane and the supporting plate can be effectively increased by arranging the first and second membrane surface bonding wires of the membrane element, so that the membrane element can bear the pressure of the pressurized backwash, and periodic pressurized backwash and maintenance cleaning are realized, thereby slowing down membrane pollution and prolonging chemical cleaning period.
2. The bonding wire of the second membrane surface of the membrane element is compact, so that the bonding force between the organic membrane and the lower half part of the supporting plate is emphasized, and the service life of the membrane element can be prolonged.
3. The first membrane surface bonding wire of the membrane element is sparse compared with the second membrane surface bonding wire, so that the effective filtering area of the upper half part of the organic membrane can be increased.
4. The utility model can ensure the effective filtering area of the organic membrane as far as possible while increasing the binding force between the organic membrane and the supporting plate by limiting the widths of the first membrane surface bonding wire and the second membrane surface bonding wire of the membrane element and preferably making the first membrane surface bonding wire and the second membrane surface bonding wire intermittent.
5. When the utility model is used for backwashing, backwash water reversely enters the water producing cavity through the water producing pipeline and the water inlet and outlet channels, and the water producing diversion cloth, the first membrane surface bonding wires and the second membrane surface bonding wires can uniformly disperse the pressure and flow of backwash water, thereby improving backwash uniformity and integrally relieving membrane pollution.
Drawings
Fig. 1 is a schematic perspective view of embodiments 1 to 3 of the present utility model.
Fig. 2 is a schematic structural view of membrane elements according to embodiments 1 to 3 of the present utility model.
Fig. 3 is a schematic distribution diagram of the bonding wires of the first membrane surface compared to the bonding wires of the second membrane surface of the membrane element in embodiment 1 of the present utility model.
Fig. 4 is a schematic distribution diagram of the bonding wires of the first membrane surface compared to the bonding wires of the second membrane surface of the membrane element in embodiment 2 of the present utility model.
Fig. 5 is a schematic distribution diagram of bonding wires of the first membrane surface compared to bonding wires of the second membrane surface of the membrane element in embodiment 3 of the present utility model.
Detailed Description
The technical scheme of the utility model is further illustrated and described below by the specific embodiments in combination with the accompanying drawings.
Example 1
As shown in FIG. 1, the membrane module comprises a membrane frame 2, a water producing pipeline 3, an aeration pipeline 4 and a plurality of membrane elements 1, wherein the membrane elements 1 are vertically arranged in the membrane frame 2 at equal intervals in parallel, the aeration pipeline 4 comprises an aeration main pipe 40 and a plurality of aeration branch pipes (not shown in the figure) which are communicated with each other, the aeration branch pipes are arranged below the membrane elements 1 to perform aeration scouring on the membrane elements 1,
as shown in fig. 2 and 3, each membrane element 1 comprises a support plate 10, wherein a plurality of evenly distributed flow channels 11 (in a convex or concave shape, which can improve the physical uniformity of the produced water fluid), a produced water diversion cloth 12 and an organic membrane 13 are sequentially arranged on two sides of the support plate 10 from inside to outside, one end of the support plate 10 is provided with a water inlet and outlet channel 101, wherein the edges of the organic membrane 13 and the produced water diversion cloth 12 are fixedly connected with the edge of the support plate 10 in a sealing way through an edge continuous welding line 102, the organic membrane 13 and the support plate 10 enclose a produced water cavity, the produced water cavity is communicated with the water inlet and outlet channel 101,
and a plurality of first film surface bonding wires 103 and a plurality of second film surface bonding wires 104 (the continuous bonding wires 102 at the edges, the first film surface bonding wires 103 and the second film surface bonding wires 104 are welded by adopting an ultrasonic or hot melt adhesive welding mode) which can effectively increase the bonding force between the organic film 13 and the supporting plate 10, the width of the first film surface bonding wire 103 and the width of the second film surface bonding wire 104 are smaller than the width of the edge continuous bonding wire 102, and the width of the first film surface bonding wire 103 and the width of the second film surface bonding wire 104 are equal and are 5mm; the first film surface bonding wire 103 and the second film surface bonding wire 104 are linear.
The first membrane surface bonding wires 103 are uniformly and parallelly staggered or uniformly and parallelly arranged on the upper half part of the organic membrane 13, and each first membrane surface bonding wire 103 fixedly connects the organic membrane 13 and the produced water guide cloth 12 on the supporting plate 10 and is separated from the flow channel 11;
the second membrane surface bonding wires 104 are uniformly and parallelly staggered or uniformly and parallelly arranged at the lower half part of the organic membrane 13, and each second membrane surface bonding wire 104 fixedly connects the organic membrane 13 and the produced water guide cloth 12 on the supporting plate 10 and is separated from the flow channel 11;
the pitch of the first film surface bonding wires 103 parallel to each other is larger than the pitch of the second film surface bonding wires 104 partially parallel to each other. Wherein the spacing between the second film surface bonding wires 104 of the portions parallel to each other is 10cm; the pitch of the first film surface bonding wires 103 parallel to each other is 3 times the pitch of the second film surface bonding wires 104 of which the portions are parallel to each other.
The spacing of the second membrane surface bonding wires 104 is smaller than that of the first membrane surface bonding wires 103, so that the second membrane surface bonding wires 104 are denser than the first membrane surface bonding wires 103, because the rigid flat-plate MBR membrane element 1 is vertically placed when in use, backwash water is filled in the lower half part of the water producing cavity first, and when backwash water is filled in the water producing cavity, the pressure applied to the lower half part of the water producing cavity is greater than that applied to the upper half part of the water producing cavity due to the action of gravity, and based on the spacing, the bonding force between the organic membrane 13 and the lower half part of the support plate 10 is emphasized, so that the second membrane surface bonding wires 104 are denser than the first membrane surface bonding wires 103. The first membrane surface bonding line 103 is sparse a little, and the effective filtration area of the upper half of the organic membrane 13 can be increased.
The contact between the first film surface bonding wire 103 and the support plate 10 is continuous or intermittent, and the contact between the second film surface bonding wire 104 and the support plate 10 is continuous or intermittent. When the contact is intermittent, the smooth interior of the water producing cavity can be further ensured, and the effective filtering area of the organic membrane 13 is ensured as much as possible.
Since the effective filtration area of the organic membrane 13 is reduced by increasing the first membrane surface bonding wire 103 and the second membrane surface bonding wire 104, the first membrane surface bonding wire 103 and the second membrane surface bonding wire 104 are made intermittent by limiting the width of the first membrane surface bonding wire 103 and the second membrane surface bonding wire 104, and the effective filtration area of the organic membrane 13 is ensured as much as possible while the bonding force between the organic membrane 13 and the support plate 10 is increased.
According to the utility model, the bonding force between the organic membrane 13 and the supporting plate 10 can be effectively increased by arranging the first membrane surface bonding wire 103 and the second membrane surface bonding wire 104, so that the membrane element 1 can bear the pressure of the pressurized backwash, and periodic pressurized backwash and maintenance cleaning are realized, thereby slowing down membrane pollution and prolonging the chemical cleaning period; the bonding wire 104 on the second membrane surface is denser, so that the bonding force between the organic membrane 13 and the lower half part of the supporting plate 10 is emphasized, and the service life of the membrane element 1 can be prolonged. During backwashing, backwash water reversely enters the water producing cavity through the water inlet and outlet channel 101, and the water producing guide cloth 12, the first membrane surface bonding wires 103 and the second membrane surface bonding wires 104 can uniformly disperse the pressure and flow of backwash water, so that backwashing uniformity is improved, and membrane pollution is integrally relieved.
Example 2
As shown in fig. 1, 2 and 4, the difference from embodiment 1 is that the first film surface bonding wires 103 are arc-shaped and uniformly arranged in parallel with each other with a pitch of 8cm.
Example 3
As shown in fig. 1, 2 and 5, the difference from embodiment 1 is that the first film surface bonding wires 103 are linear and uniformly and parallelly staggered with each other to form a parallelogram shape (non-rectangular shape), wherein the pitch of the first film surface bonding wires 103 which are inclined and parallel with each other is 12cm.
The foregoing description is only illustrative of the preferred embodiments of the present utility model and is not to be construed as limiting the scope of the utility model, i.e., the utility model is not to be limited to the details of the utility model.
Claims (8)
1. A membrane module of a pressurized backwash rigid flat plate MBR comprises a membrane frame, a water production pipeline, an aeration pipeline and a plurality of membrane elements, wherein the plurality of membrane elements are vertically arranged in the membrane frame at equal intervals in parallel, the aeration pipeline comprises an aeration main pipe and a plurality of aeration branch pipes which are communicated with each other, the plurality of aeration branch pipes are arranged below the plurality of membrane elements to perform aeration scouring on the membrane elements,
wherein each membrane element comprises a supporting plate, a plurality of flow passages, water producing diversion cloth and organic membranes are sequentially arranged on two sides of the supporting plate from inside to outside, one end of the supporting plate is provided with a water inlet and outlet passage communicated with the water producing pipeline, the edges of the organic membranes and the water producing diversion cloth are fixedly connected with the edges of the supporting plate in a sealing way through continuous bonding wires at the edges, the organic membranes and the supporting plate enclose a water producing cavity, the water producing cavity is communicated with the water inlet and outlet passage,
the method is characterized in that: also comprises a plurality of first film surface bonding wires and a plurality of second film surface bonding wires,
the first membrane surface bonding wires are uniformly and parallelly staggered on the upper half part of the organic membrane, and each first membrane surface bonding wire fixedly connects the organic membrane and the produced water guide cloth on the supporting plate and is separated from the flow channel;
the second membrane surface bonding wires are uniformly and parallelly staggered on the lower half part of the organic membrane, and each second membrane surface bonding wire fixedly connects the organic membrane and the produced water guide cloth on the supporting plate and is separated from the flow channel;
the spacing between the first film surface bonding wires parallel to each other is larger than the spacing between the second film surface bonding wires partially parallel to each other.
2. The pressure backwash rigid flat plate MBR membrane assembly of claim 1 wherein: the spacing between the bonding wires of the second film surfaces of the parts which are parallel to each other is 1 cm to 20cm.
3. The pressure backwash rigid flat plate MBR membrane assembly of claim 2 wherein: the distance between the first film surface bonding wires parallel to each other is 1.5-5 times of the distance between the second film surface bonding wires parallel to each other.
4. The pressure backwash rigid flat plate MBR membrane assembly of claim 1 wherein: the width of the first film surface bonding wire and the width of the second film surface bonding wire are smaller than the width of the edge continuous bonding wire.
5. The pressurized backwash rigid flat plate MBR membrane assembly as set forth in claim 4 wherein: the width of the first film surface bonding wire is equal to that of the second film surface bonding wire.
6. The pressurized backwash rigid flat plate MBR membrane assembly as set forth in claim 5 wherein: the width of the first film surface bonding wire and the width of the second film surface bonding wire are 1-10mm.
7. The pressure backwash rigid flat plate MBR membrane assembly as claimed in claim 1 wherein: the contact position of the first film surface bonding wire and the supporting plate is continuous or intermittent, and the contact position of the second film surface bonding wire and the supporting plate is continuous or intermittent.
8. A pressure backwashable rigid flat plate MBR membrane module according to any one of claims 1 to 7, wherein: the first film surface bonding wire is in a linear shape or an arc shape, and the second film surface bonding wire is in a linear shape or an arc shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320544653.0U CN219670254U (en) | 2023-03-20 | 2023-03-20 | Back washing rigid flat-plate MBR (Membrane biological reactor) membrane module capable of being pressurized |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320544653.0U CN219670254U (en) | 2023-03-20 | 2023-03-20 | Back washing rigid flat-plate MBR (Membrane biological reactor) membrane module capable of being pressurized |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219670254U true CN219670254U (en) | 2023-09-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320544653.0U Active CN219670254U (en) | 2023-03-20 | 2023-03-20 | Back washing rigid flat-plate MBR (Membrane biological reactor) membrane module capable of being pressurized |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219670254U (en) |
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2023
- 2023-03-20 CN CN202320544653.0U patent/CN219670254U/en active Active
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