CN112473386A - Enhanced tubular membrane - Google Patents
Enhanced tubular membrane Download PDFInfo
- Publication number
- CN112473386A CN112473386A CN202110032416.1A CN202110032416A CN112473386A CN 112473386 A CN112473386 A CN 112473386A CN 202110032416 A CN202110032416 A CN 202110032416A CN 112473386 A CN112473386 A CN 112473386A
- Authority
- CN
- China
- Prior art keywords
- tubular membrane
- membrane
- built
- flow deflector
- reinforced
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/06—Tubular membrane modules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/08—Prevention of membrane fouling or of concentration polarisation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a reinforced tubular membrane, which comprises a tubular membrane and a built-in flow deflector thereof. The built-in flow deflector is arranged in the tubular membrane along the axial direction of the tubular membrane. The flow deflector is spiral along the axial direction of the tubular membrane and can be connected in series by one or more sections. The outer diameter of the built-in flow deflector is the same as the inner diameter of the tubular membrane. The stock solution flows in from one end of the tubular membrane element, flows along the tubular membrane and the guide vane, the penetrating fluid penetrates through the membrane wall, and the concentrated solution flows out from the other end of the tubular membrane. The invention enhances the turbulent flow effect of liquid in the pipe, overcomes concentration polarization, prolongs the concentrated water flow passage and improves the water yield.
Description
The invention relates to the technical field of membrane separation, in particular to an enhanced tubular membrane.
Background
The membrane technology is an effective means for water purification, and suspended substances, bacteria, heavy metals and organic pollutants in water can be removed by using the membrane, so that the water quality is greatly improved. Compared with the traditional separation technology, the membrane technology has the advantages of high efficiency, energy conservation, environmental friendliness, easiness in process control, convenience in operation, easiness in integration with other technologies and the like. Membrane separation technology has been recognized as one of the most promising high technologies, and in recent years, membrane technology has been rapidly developed and has attracted attention.
At present, the tubular membrane is widely applied to the membrane application market due to the advantages of simple pretreatment requirement, strong adaptability to water inflow, difficult blockage, easy cleaning and the like. However, the currently known tubular membrane has low filling density and short flow, which results in low filtration efficiency and low water yield; in addition, the concentration polarization phenomenon on the surface of the membrane is easy to cause membrane pollution, and the replacement period of the membrane element is short.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a reinforced tubular membrane.
The technical scheme is as follows: in order to achieve the purpose, the invention designs the following technical scheme: a reinforced tubular membrane comprises a tubular membrane and a built-in flow deflector. The built-in flow deflector is spirally arranged in the tubular membrane along the axial direction of the tubular membrane. The stock solution flows in from one end of the tubular membrane, flows along the tubular membrane and the flow deflector, the penetrating fluid penetrates through the membrane wall, and the concentrated solution flows out from the other end of the tubular membrane.
The outer diameter of the built-in flow deflector is the same as the inner diameter of the tubular membrane.
The ratio of the pitch of the built-in flow deflector to the inner diameter of the tubular filter membrane is equal to or more than 1: 1.
The built-in guide vanes can be connected in series by one or more sections.
The phase difference between two adjacent sections of the multi-section series-connected built-in guide vanes is 90 degrees.
The built-in guide vanes are in equal pitch or variable pitch.
Has the advantages that: according to the invention, through the design of the spiral built-in flow deflector, the fluid motion state can be changed, the turbulence effect in the pipe is increased, the concentration polarization is overcome, the membrane pollution is reduced, and the membrane service life is prolonged. In addition, the built-in flow deflector can prolong a raw water flow channel, so that the filtration efficiency of the tubular membrane is improved on the whole, and the water yield is improved. The invention has simple structure and good practicability.
Drawings
FIG. 1 is a schematic plan view of a reinforced tubular membrane of the present invention.
Fig. 2 is a schematic structural view of a section of built-in guide vane provided in the present invention.
Fig. 3 is a schematic view of a series structure of a plurality of sections of built-in guide vanes.
The reference numbers illustrate: 1-tubular membrane, 2-built-in flow deflector, 3-stock solution, 4-penetrating fluid and 5-concentrated solution.
Detailed Description
The present invention will be further described in the following detailed description with reference to the drawings, which are only used for clearly and completely describing the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all embodiments, and do not limit the protection scope of the present invention.
As shown in the figure, the reinforced tubular membrane comprises a tubular membrane (1) and a built-in flow deflector (2). The built-in flow deflector is spirally arranged in the tubular membrane along the axial direction of the tubular membrane.
The outer diameter of the built-in flow deflector is the same as the inner diameter of the tubular membrane.
The ratio of the pitch of the built-in flow deflector to the inner diameter of the tubular filter membrane is equal to or more than 1: 1.
The built-in guide vanes can be connected in series by one or more sections.
The phase difference between two adjacent sections of the multi-section series-connected built-in guide vanes is 90 degrees.
The built-in guide vanes are in equal pitch or variable pitch.
When the invention works, the stock solution (3) flows in from one end of the tubular membrane, flows along the tubular membrane and the built-in flow deflector, the penetrating fluid (4) penetrates through the membrane wall, and the concentrated solution (5) flows out from the other end of the tubular membrane.
In the tubular membrane, the spiral built-in flow deflectors are arranged along the axial direction, water enters from one end of the tubular membrane element, and the separation and the guidance of the built-in flow deflectors enhance the turbulence effect in the tubular membrane and greatly reduce the concentration polarization on the surface of the membrane, thereby greatly reducing the membrane pollution and prolonging the service life of the membrane element. In addition, compared with the traditional tubular membrane, the raw water flow channel is greatly prolonged, and the filtration efficiency is generally improved.
The invention has been described in connection with the accompanying drawings, it is to be understood that the invention is not limited to the specific embodiments disclosed, but is intended to cover various modifications, adaptations or uses of the invention, and all such modifications and variations are within the scope of the invention.
Claims (6)
1. A reinforced tubular membrane is characterized by comprising a tubular membrane and a built-in flow deflector thereof. The built-in flow deflector is spirally arranged in the tubular membrane along the axial direction of the tubular membrane. The stock solution flows in from one end of the tubular membrane, flows along the tubular membrane and the flow deflector, the penetrating fluid penetrates through the membrane wall, and the concentrated solution flows out from the other end of the tubular membrane.
2. A reinforced tubular membrane as claimed in claim one wherein the external diameter of the internal baffle is the same as the internal diameter of the tubular membrane.
3. A reinforced tubular membrane as claimed in claim one wherein the ratio of the pitch of the internal baffle to the internal diameter of the tubular membrane is equal to or greater than 1: 1.
4. A reinforced tubular membrane as claimed in claim one wherein said internal baffles may be one or more segments connected in series.
5. A reinforced tubular membrane as claimed in claim four wherein said plurality of series connected internal baffles are 90 ° out of phase with each other.
6. A reinforced tubular membrane according to claim one wherein the internal baffles are of constant or varying pitch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110032416.1A CN112473386A (en) | 2021-01-11 | 2021-01-11 | Enhanced tubular membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110032416.1A CN112473386A (en) | 2021-01-11 | 2021-01-11 | Enhanced tubular membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112473386A true CN112473386A (en) | 2021-03-12 |
Family
ID=74912366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110032416.1A Pending CN112473386A (en) | 2021-01-11 | 2021-01-11 | Enhanced tubular membrane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112473386A (en) |
-
2021
- 2021-01-11 CN CN202110032416.1A patent/CN112473386A/en active Pending
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| SE01 | Entry into force of request for substantive examination |