CN1318126C - Secondary flowing film separating method and device - Google Patents
Secondary flowing film separating method and device Download PDFInfo
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- CN1318126C CN1318126C CNB2004100469612A CN200410046961A CN1318126C CN 1318126 C CN1318126 C CN 1318126C CN B2004100469612 A CNB2004100469612 A CN B2004100469612A CN 200410046961 A CN200410046961 A CN 200410046961A CN 1318126 C CN1318126 C CN 1318126C
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Abstract
The present invention relates to a secondary flowing film separating method and a device. The present invention aims to provide a secondary flowing film separating method and a device capable of reducing film pollution and concentration polarization. The secondary flowing film separating method is characterized in that the secondary flowing film separating method comprises the following steps: (1), at least two hollow fibre films are knitted into a secondary flowing film according to equal pitch or unequal pitch; (2), a fluid flows in the curved secondary flowing film to generate two vortexes with opposite rotation directions; (3), the fluid flows in the secondary flowing film, and is pumped into the inlet end of the secondary flowing film by a pump through a material inlet pipe, the pressure of the inlet end keeps 0.115 to 0.415MPa, penetrating liquid is discharged from a penetrating liquid pipe, and concentrated liquid is discharged from a concentrated liquid pipe. The secondary flowing film device for the method is characterized in that at least two hollow fibre films are knitted into the secondary flowing film arranged in a film shell pipe whose one end is communicated with the material inlet pipe, the other end is communicated with the concentrated liquid pipe, and one side of the film shell pipe is also provided with a penetrating liquid pipe. The present invention is mainly used for sewage treatment, seawater desalination, etc.
Description
Technical field
The present invention relates to a kind of secondary stream membrane separating method and device, the secondary of especially disposing of sewage stream membrane separating method and device.
Background technology
Membrane separation technique is widely used in the purification and the concentrated aspect of sewage disposal, desalinization, biochemistry and food industry, its commercial history of using existing more than 30 year, but the research and development of membrane separation technique did not stop all the time.In membrane filtration processes, film pollutes and concentration polarization is two topmost problems, and it has limited infiltration capacity.What the method for pollution of reduction film and concentration polarization adopted usually is the improvement of the surface modification or the film system architecture of film, but since the energy consumption height, reasons such as film processing system complexity and operational reliability difference, and effect is undesirable, has restricted the application and the development of membrane process.
Summary of the invention
The object of the present invention is to provide a kind of secondary stream membrane separating method and device that can reduce film pollution and concentration polarization, thereby improve membrane separation efficiency, cut down the consumption of energy.
Technical solution of the present invention is that at least two hollow-fibre membranes are woven into secondary stream film by decreasing worm-pitch, make fluid in the secondary stream film of bending, flow and produce two opposite vortexs of direction of rotation and wash away the film inwall, to reduce the pollution and the concentration polarization of film, improve membrane separation efficiency.
Secondary stream membrane separating method of the present invention adopts fluid, it is characterized in that following steps:
(1) at least two hollow-fibre membranes is woven into secondary stream film by decreasing worm-pitch;
(2) fluid is flowed in the secondary stream film of bending, produce two vortexs that direction of rotation is opposite;
(3) fluid flows in secondary stream film, it is import one end that fluid is pumped into secondary stream film through feeding pipe with pump, keeping the fluid pressure of entrance point is 0.115-0.415MPa, fluid separates in secondary stream film, penetrating fluid flows out through the penetrating fluid pipe from membranous wall, concentrate is then discharged through the concentrate pipe from outlet one end of secondary stream film, thereby finishes separation process.
The secondary stream film device that is used for the inventive method, comprise secondary stream film, it is characterized in that described secondary flows film 2 and is made up of at least two hollow-fibre membranes 7,7 ' braiding, secondary stream film 2 places in the putamina pipe 3, the one end is connected with feeding pipe 1, the other end is connected with concentrate pipe 5, and a side of described putamina pipe 3 also has a penetrating fluid pipe 6.
Described secondary stream film 2 is to be formed by the decreasing worm-pitch braiding by two hollow-fibre membranes.
Described secondary stream film 2 is to be formed by the decreasing worm-pitch braiding by three hollow-fibre membranes.
Advantage of the present invention is, adopt at least two hollow-fibre membranes to press the secondary stream film that decreasing worm-pitch is formed, fluid is flowed in the secondary stream film of bending form the inwall that the opposite vortex of both direction washes away film, thereby the pollution and the concentration polarization of reduction film that can be strong, improve membrane separation efficiency and penetrating fluid the rate of recovery, cut down the consumption of energy.
Description of drawings
Fig. 1 is that the opposite bumpy flow of the interior both direction of secondary stream film of the present invention is to schematic diagram.
Fig. 2 is the structural representation of secondary stream film device of the present invention (secondary stream film is pressed the decreasing worm-pitch braiding by two hollow-fibre membranes).
Fig. 3 is the structural representation of secondary stream film device of the present invention (secondary stream film is pressed the decreasing worm-pitch braiding by three hollow-fibre membranes).
Fig. 4 is the structural representation of embodiment of secondary stream film of the present invention (secondary stream film is pressed the decreasing worm-pitch braiding by two hollow-fibre membranes).
Fig. 5 is the structural representation of another embodiment of secondary stream film of the present invention (secondary stream film is pressed the decreasing worm-pitch braiding by three hollow-fibre membranes).
Among the figure: 1-feeding pipe, 2-secondary stream film, 3-putamina pipe, 4-link flange, 5-concentrate pipe, 6-penetrating fluid pipe, 7,7 '-hollow fiber conduit, 8-fluid, 9,9 '-fluid whirl.
The specific embodiment
Below in conjunction with accompanying drawing the present invention and the specific embodiment thereof are described in further detail.
Example 1
Referring to Fig. 1-2, with three hollow-fibre membranes 7,7 ' be woven into secondary stream film 2 by decreasing worm-pitch, and a plurality of secondaries stream films are placed putamina pipe 3, then, with pump fluid is pumped into secondary stream film 2 through feeding pipe 1, fluid produces two vortexs 9 that direction of rotation is opposite when flowing in secondary stream film 2,9 ' (secondary stream) wash away the inwall of film, the pollution and the concentration polarization of film have been reduced to a great extent, fluid is to carry out Separation of Solid and Liquid under the condition of 0.115MPa at the pressure of secondary stream film entrance point, penetrating fluid is discharged through penetrating fluid pipe 6 from membranous wall, concentrate is discharged from concentration tube 5, thereby finishes separation process.
Example 2
Referring to Fig. 3, two hollow-fibre membranes are woven into secondary stream film by decreasing worm-pitch carry out detached job, fluid is 0.165MPa at the pressure of secondary stream film entrance point, all the other are with example 1.
Example 3
Referring to Fig. 4, two hollow-fibre membranes are woven into secondary stream film by decreasing worm-pitch carry out detached job, fluid is 0.215MPa at the pressure of secondary stream film entrance point, all the other are with example 1.
Example 4
Referring to Fig. 5, three hollow-fibre membranes are woven into secondary stream film by decreasing worm-pitch carry out detached job, fluid is 0.415MPa at the pressure of secondary stream film entrance point, all the other are with example 1.
Claims (4)
1, a kind of secondary stream membrane separating method adopts fluid, it is characterized in that following steps:
(1) at least two hollow-fibre membranes is woven into secondary stream film by decreasing worm-pitch;
(2) fluid is flowed in the secondary stream film of bending, produce two vortexs that direction of rotation is opposite;
(3) fluid flows in secondary stream film, it is import one end that fluid is pumped into secondary stream film through feeding pipe with pump, keeping the fluid pressure of entrance point is 0.115-0.415MPa, fluid separates in secondary stream film, penetrating fluid flows out through the penetrating fluid pipe from membranous wall, concentrate is then discharged through the concentrate pipe from outlet one end of secondary stream film, thereby finishes separation process.
2, a kind of secondary stream film device that is used for claim 1 method, comprise secondary stream film, it is characterized in that described secondary flows film (2) and is made up of at least two hollow-fibre membranes (7,7 ') braiding, secondary stream film (2) places in the putamina pipe (3), the one end is connected with feeding pipe (1), the other end is connected with concentrate pipe (5), and a side of described putamina pipe (3) also has a penetrating fluid pipe (6).
3,, it is characterized in that described secondary stream film (2) is to be formed by the decreasing worm-pitch braiding by two hollow-fibre membranes by the described device of claim 2.
4,, it is characterized in that described secondary stream film (2) is to be formed by the decreasing worm-pitch braiding by three hollow-fibre membranes by the described device of claim 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100469612A CN1318126C (en) | 2004-11-19 | 2004-11-19 | Secondary flowing film separating method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100469612A CN1318126C (en) | 2004-11-19 | 2004-11-19 | Secondary flowing film separating method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1631497A CN1631497A (en) | 2005-06-29 |
| CN1318126C true CN1318126C (en) | 2007-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100469612A Expired - Fee Related CN1318126C (en) | 2004-11-19 | 2004-11-19 | Secondary flowing film separating method and device |
Country Status (1)
| Country | Link |
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| CN (1) | CN1318126C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2271418B1 (en) * | 2008-04-08 | 2012-01-25 | Knappe, Holger | Modular membrane housing elements and method for the production thereof |
| KR102166477B1 (en) * | 2017-11-03 | 2020-10-16 | 주식회사 엘지화학 | Apparatus and method for manufacturing helical strand of water-treatment filter module |
| CN110711498A (en) * | 2018-07-12 | 2020-01-21 | 北京耐恩环保科技有限公司 | Braided hollow fiber membrane |
| CN114618310A (en) * | 2022-04-09 | 2022-06-14 | 四川大学 | Woven hollow fiber membrane module and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1166792A (en) * | 1995-08-08 | 1997-12-03 | 伦塞勒高聚技术研究所 | Coiled membrane filtration system |
| JP2002358988A (en) * | 2001-06-01 | 2002-12-13 | Honda Motor Co Ltd | Hollow fiber module |
| US6517725B2 (en) * | 1999-05-27 | 2003-02-11 | Porous Media | Oil dehydrator |
| CN1533825A (en) * | 2003-03-20 | 2004-10-06 | �ն��繤��ʽ���� | Screw part for separating film |
-
2004
- 2004-11-19 CN CNB2004100469612A patent/CN1318126C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1166792A (en) * | 1995-08-08 | 1997-12-03 | 伦塞勒高聚技术研究所 | Coiled membrane filtration system |
| US6517725B2 (en) * | 1999-05-27 | 2003-02-11 | Porous Media | Oil dehydrator |
| JP2002358988A (en) * | 2001-06-01 | 2002-12-13 | Honda Motor Co Ltd | Hollow fiber module |
| CN1533825A (en) * | 2003-03-20 | 2004-10-06 | �ն��繤��ʽ���� | Screw part for separating film |
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| CN1631497A (en) | 2005-06-29 |
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Granted publication date: 20070530 Termination date: 20091221 |