CN213725806U - Anti-pollution membrane element based on regular morphology - Google Patents
Anti-pollution membrane element based on regular morphology Download PDFInfo
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- CN213725806U CN213725806U CN202021628317.7U CN202021628317U CN213725806U CN 213725806 U CN213725806 U CN 213725806U CN 202021628317 U CN202021628317 U CN 202021628317U CN 213725806 U CN213725806 U CN 213725806U
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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Abstract
The utility model relates to an antipollution membrane element based on regular topography, wherein the surface of membrane element has the regular topography of recess form, punctiform and/or multilateral shape. The anti-pollution membrane element based on the regular morphology is adopted, the membrane flux and the desalination performance are kept unchanged, and the morphology can enable inlet water to form a vortex self-cleaning effect, so that the membrane pollution is effectively slowed down, the cleaning period is shortened, and the service life of the membrane element is prolonged. In addition, the method has large adjustable space and obvious effect.
Description
Technical Field
The utility model relates to a water treatment technical field, concretely relates to antipollution membrane element based on regular morphology.
Background
With the rapid development of membrane technology, a series of roll-type, plate-frame-type, butterfly-type, and hollow fiber-type membrane elements, such as nanofiltration membrane elements, reverse osmosis membrane elements, ultrafiltration membrane elements, and microfiltration membrane elements, are widely used in the fields of municipal sewage, industrial wastewater, and the like. However, in the actual application process, there are problems such as membrane contamination of the membrane element, which not only affects the use efficiency of the membrane element, but also adversely affects the life of the membrane element due to frequent cleaning, resulting in an increase in application cost. The membrane pollution in the membrane element is mainly divided into organic pollution, inorganic pollution and microbial pollution, and factors influencing the membrane pollution mainly comprise the following three aspects: firstly, the quality of the inlet water, such as the particle size of pollutants, the pH value of the inlet water, the ion composition, the ionic strength and the like; secondly, the operation condition, such as the operation flux, the recovery rate, the membrane surface flow rate and the like of the membrane system, is greatly influenced by the fluid mechanics condition; and the third is the characteristics of the membrane element itself, such as membrane performance (pore size distribution, hydrophilicity and hydrophobicity, surface charge, roughness, etc.), and element performance (concentrated water channel structure, pure water channel structure, element manufacturing type, etc.). However, in the practical application process, the quality of the inlet water is not easy to change, and the method for improving the pollution period by changing the operation conditions has a limited effect generally, and can cause the defects of reduction of water yield, increase of energy consumption and the like. Therefore, it is important to improve the operation process to reduce the operation cost and to improve the contamination resistance of the membrane element itself.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned defect that exists among the prior art, thereby the utility model discloses thereby not only can influence the availability factor of film element to the membrane pollution that the film element exists in the practical application process, frequently wash and also can cause adverse effect to the life-span of film element, the problem that leads to the application cost to increase, through preparing the antipollution film element of having regular appearance, make into water and form vortex self-cleaning effect inside the film element, can effectively slow down membrane pollution, reduce the cleaning cycle, thereby improve the antipollution performance of film element, increase the life of film element. The meaning of regular topography in the present invention is the regular shape that the membrane has (for example, the regular shape is composed of grooves, dots and/or polygons, or other regular shapes are composed of H-shaped water flow channel structures or i-shaped water flow channel structures).
The technical scheme of the utility model is that:
an anti-pollution membrane element based on a regular topography, wherein the surface of membrane sheets in the element has a regular topography in a groove shape, a dot shape and/or a polygonal shape.
Preferably, the membrane sheet constituting the membrane element includes a nanofiltration membrane, a reverse osmosis membrane, an ultrafiltration membrane or a microfiltration membrane of a polysulfone substrate or a polyolefin substrate.
Preferably, the regular topography is adjustable in size.
Preferably, the regular topography is formed by one-step synthesis, post-treatment imprinting or compounding with other regular topography substrates.
Preferably, the one-step synthesis is specifically formed by adjusting a film-making formulation or formed by physical action.
Preferably, the post-processing imprinting specifically adopts other regular morphology structures for imprinting forming.
Preferably, the other regular topography structures comprise an H-shaped water flow channel structure and an I-shaped water flow channel structure, the width of the support structure of the two water flow channels is 0.1mm-10mm, the width of the water flow channel is 0.1mm-10mm, and the height of the water flow channel is 0.1mm-10 mm.
Preferably, the included angle between the extension direction of the H-shaped water flow channel or the I-shaped water flow channel and the water flow direction of the membrane surface is 0-180 degrees.
The utility model has the advantages as follows:
the anti-pollution membrane element based on the regular morphology is adopted, the membrane flux and the desalination performance are kept unchanged, and the morphology can enable inlet water to form a vortex self-cleaning effect, so that the membrane pollution is effectively slowed down, the cleaning period is shortened, and the service life of the membrane element is prolonged. In addition, the method has large adjustable space and obvious effect.
Drawings
In order to make the technical solution and the advantageous technical effects of the present invention easier to understand, the present application is described in detail with reference to the embodiments of the present invention shown in the accompanying drawings. The drawings depict only typical embodiments of the application and are not therefore to be considered to be limiting of its scope, for the application is described in the following:
FIG. 1 is a schematic structural view of an H-shaped water flow channel;
FIG. 2 is a schematic structural view of an I-shaped water flow channel;
FIG. 3 is a schematic structural diagram of a regular morphology of a groove-like, dot-like and/or polygonal shape of the film itself.
Detailed Description
The anti-pollution membrane element based on regular morphology of the present invention will be described in detail with reference to the attached drawings 1-3.
The utility model discloses an antipollution membrane element's surface based on regular morphology has the regular morphology of recess form, punctiform and/or multilateral shape to can keep membrane flux and desalination performance unchangeable, this appearance can make into water and form vortex self-cleaning effect, thereby effectively slows down the membrane pollution, reduces the cleaning cycle, increases the life of membrane element.
The membrane of the membrane element comprises a polysulfone substrate or polyolefin substrate, a nanofiltration membrane, a reverse osmosis membrane, an ultrafiltration membrane or a microfiltration membrane, the regular morphology size is adjustable, the microscopic regular morphology structure of the membrane can be adjusted through a membrane preparation process before forming, and the membrane can be fixed after forming; the relatively macroscopic regular morphology formed on the membrane surface by means of post-embossing or compounding and the like in the membrane element can be adjusted according to the use conditions of the membrane element, that is, even if the membrane with the same microscopic regular morphology is manufactured, the relatively macroscopic regular morphology on the membrane surface can be adjusted by adjusting the embossing structure or the compound structure in the post stage. The regular morphology is formed by adopting a one-step synthesis mode, a post-treatment imprinting mode or a mode of compounding with other regular morphology base materials. The one-step synthesis is specifically formed by adjusting a film-making formula or formed by physical action. The post-processing imprinting specifically adopts other regular morphology structures for imprinting and forming, the film has a microscopic regular morphology, and the later-stage imprinting is formed by imprinting or compounding on other regular morphology structures and can be understood as a relatively macroscopic regular morphology.
The membrane has a microscopic regular topography including a groove-like, dot-like and/or polygonal regular topography, which is possessed by the membrane itself, as shown in fig. 3.
The other regular morphology structures comprise an H-shaped water flow channel structure and an I-shaped water flow channel structure, and the regular morphology of the later-stage stamping structure can be obtained at will according to the application scene and the application range of elements, as shown in fig. 1 and 2, a is the width of the supporting structure, and the size of the supporting structure is 0.1mm-10 mm; b is the width of the water flow channel, and the size of the water flow channel is 0.1mm-10 mm; c is the height of the water flow channel, and the size is 0.1mm-10 mm; the sizes of b and c are one of important factors for determining the regular topography of the film surface after post-treatment imprinting, such as the width and the depth of a groove, and the other factors also comprise post-treatment imprinting conditions, such as post-treatment pressure, a post-treatment method and the like; the a-dimension determines the regular topography of the film surface, e.g. the groove spacing. The direction of the regular morphology, namely the extending direction of the H-shaped water flow channel or the I-shaped water flow channel and the water flow direction of the membrane surface form an arbitrary angle of 0-180 degrees.
The invention can be embodied in other specific forms without however departing from the scope of protection of the invention, which is limited only by the accompanying claims.
Claims (4)
1. The utility model provides an antipollution membrane element based on regular morphology which characterized in that: the surface of the membrane in the element is provided with a regular shape of a groove shape, a point shape and/or a polygonal shape, wherein the regular shape is formed by adopting a one-step synthesis mode, a post-treatment imprinting mode or a mode of compounding with other regular shape base materials, the post-treatment imprinting mode is specifically to adopt other regular shape structures for imprinting and forming, the other regular shape structures comprise an H-shaped water flow channel structure and an I-shaped water flow channel structure, the width of the support structures of the two water flow channels is 0.1mm-10mm, the width of the water flow channel is 0.1mm-10mm, and the height of the water flow channel is 0.1mm-10 mm.
2. The anti-contamination membrane element based on regular morphology according to claim 1, wherein a membrane sheet constituting the membrane element comprises a nanofiltration membrane, a reverse osmosis membrane, an ultrafiltration membrane or a microfiltration membrane of a polysulfone substrate or a polyolefin substrate.
3. The anti-contamination membrane element based on regular topography of claim 1, wherein the regular topography is adjustable in size.
4. The anti-pollution membrane element based on regular morphology according to any one of claims 1 to 3, wherein the extending direction of the H-shaped water flow channel or the I-shaped water flow channel is at any angle of 0-180 degrees with respect to the membrane surface water flow direction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021628317.7U CN213725806U (en) | 2020-08-07 | 2020-08-07 | Anti-pollution membrane element based on regular morphology |
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| CN202021628317.7U CN213725806U (en) | 2020-08-07 | 2020-08-07 | Anti-pollution membrane element based on regular morphology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111841327A (en) * | 2020-08-07 | 2020-10-30 | 北京碧水源膜科技有限公司 | Anti-pollution membrane element based on regular morphology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111841327A (en) * | 2020-08-07 | 2020-10-30 | 北京碧水源膜科技有限公司 | Anti-pollution membrane element based on regular morphology |
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