CN1853763A - Hollow fiberous-membrane assembly root braiding reinforcing technology - Google Patents
Hollow fiberous-membrane assembly root braiding reinforcing technology Download PDFInfo
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- CN1853763A CN1853763A CNA2005100647718A CN200510064771A CN1853763A CN 1853763 A CN1853763 A CN 1853763A CN A2005100647718 A CNA2005100647718 A CN A2005100647718A CN 200510064771 A CN200510064771 A CN 200510064771A CN 1853763 A CN1853763 A CN 1853763A
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- braiding
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- hollow fiber
- reinforcing technology
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Abstract
A braiding technique for reinforcing the root part of hollow fiber membrane module features that the anticorrosion and hydrophobic cord threads or nylon wires are used to be braided at the adhered positions on the top or bottom sides of hollow fiber membrane module to increase its strength. The number of the braided fibers in a bundle is 10-50 and the number of the braided lines is 1-5.
Description
Technical field
The invention belongs to the application of membrane separation technology technical field, particularly a kind of root braiding technology of strengthening at the part of hollow-fibre membrane.
Background technology
Membrane bioreactor is the technology that membrane separation technique and biological sewage treatment technology are combined and dispose of sewage, compare with traditional biological sewage treatment technology, it has, and floor space is little, equipment is concentrated, modularization, and [the Tom Stephenson that day by day worldwide comes into one's own of the advantages such as potentiality with upgrading, SimonJudd, Bruce Jefferson, Keith Brindle, Membrane Bioreaators for wastewater Treatment], be considered to have most one of the sewage disposal of prospect and reuse technology.But the problems such as flux decay that the film pollution when of membrane material sexual valence causes seriously hinder applying of membrane technology always.
Hollow-fibre membrane is a kind of design form of membrane module, hollow fiber film assembly be applied to widely fields such as MF, UF, GP, RO [Xu Zhenliang. the embrane method water technology. Beijing, Chemical Industry Press, 2001].In sewage disposal, the hollow-fibre membrane pressure vessel of not packing under a lot of situations, assembly is directly put into reactor and is constituted built-in membrane biological reaction gas.Though its loading density is higher, the withstand voltage properties height, very sensitive to stopping up, pollution and concentration polarization produce very big influence to the separating property of film.Simultaneously, hollow fiber film assembly is in long-time running, and the mechanical strength of membrane material also is that can the decision membrane bioreactor stablize the important decisive factor of good operation.Hollow fiber film assembly is in application process, and most cases utilizes aeration to wash away to change the type of flow to realize sludge blanket is polluted and the control of concentration polarization and reducing.But in application in practice, the aeration of long term atmospheric amount washes away the serious fracture of wire problem that operation has caused the glued root of hollow fiber film assembly, especially at the top of assembly bonded section, has had a strong impact on the stably reaching standard water outlet of membrane bioreactor.Tracing it to its cause is, the material mechanical strength of the organic film of macromolecule of part is lower both at home and abroad, washes away at long-term aeration and has reached its fatigue strength in the swing process and fracture of wire.In addition, the film silk to mechanical agitation after the colloidal sol of bonded section solidified under aeration washed away is easy to generate cutting and causes fracture of wire.
Summary of the invention
Low according to hollow-fibre membrane membrane material mechanical strength in the application in practice process, bonded section is the serious problem of assembly top glued district fracture of wire especially, the invention provides a kind of local root braiding technology of strengthening and can resolve this problem effectively.Present technique can be used in the membrane module production process in scale, and braiding is convenient, and can effectively improve the flow channel for liquids on film silk surface, can effectively improve the glued local mechanical strength of original material assembly.
The mentioned film silk knitting skill of the present invention is primarily aimed at the braiding of the glued root of hollow fiber film assembly.According to the experience and the discovery of application in practice, and calculate, utilize the base material of materials such as the stronger hydrophobic cord of corrosion resistance, nylon as the local braiding of film silk according to the theory of hydraulics aspect.Mainly weave in the braiding process at the top of hollow fiber film assembly and gluing place of bottom, and the quantity that guarantees every bundle film silk in the braiding process is the 10-50 root, Bian Zhi position is the 5-10CM place apart from the gluing end simultaneously, diaphragm to both sides carries out similar braiding respectively, the braiding line number be 1 walk to 5 the row.Its concrete root braiding form is seen Figure of description.Compare with traditional hollow fiber film assembly, the hollow fiber film assembly that the process root braiding is strengthened is in running, the mechanical agitation that produces though still be subjected to the sluicing of big aeration rate, but the film silk of this moment is to resist the stress that the mechanical pendulum movable property is given birth to the mechanical strength of a branch of film silk and since this moment a branch of film silk surface area can alleviate the suffered stress of each film silk more greatly.Avoid the fracture of wire at glued place.And film silk bunchy washes away the good runner that has formed whole swing and flush liquid in the process at aeration, has prevented that stirring between film silk that film silk alkali causes owing to different swaying directions from connecing the assembly that produces mud, avoids the film silk fracture in this process.Local braiding reinforcing technology at the gluing district of hollow fiber film assembly can effectively reduce because aeration washes away the fracture of wire problem of the excessive generation of stress of generation, makes the lower organic film of macromolecule of domestic and international part mechanical strength obtain more extensive and stable application in the application of membrane module.
The specific embodiment
To contain COD is 200～500mg/L, BOD
5Be 100～300mg/L, ammonia nitrogen is 50～160mg/L, SS is that the sanitary sewage of 20～50mg/L enters the activated sludge Membrane Bioreactor for Wastewater Treatment, system adopts root braiding reinforcing technology of the present invention that the hollow fiber film assembly of homemade low mechanical strength is woven application, is that (general design load is 15-30: the air-blowing amount was 1m under the condition 1) in 20: 1 in gas-water ratio
3/ hr, 12～29 ℃ of temperature, pH is under 6.5～8.0 conditions, stable operation 6 months, the flux stabilized of this hollow fiber film assembly is at 10-15L/m
2H, operating pressure are 16～20kpa.Compare with traditional assembly, the pollution of pollution layer has obtained effective control, and does not have the generation of fracture of wire.System's water outlet COD value changes between 10～30mg/L, generally is stabilized under the 20mg/L BOD
5Value fluctuates between 1～3mg/L, and ammonia nitrogen is stabilized in below the 10mg/L, and SS is stabilized in below the 0.3mg/L, and effluent quality reaches " urban sewage reutilization-city miscellaneous water water quality " (GB/T18920-2002) standard.
Description of drawings
The application sketch of Fig. 1 hollow fiber film assembly root braiding reinforcing technology
Reference numeral
1, hollow fiber film assembly, 2, the film silk, 3, braided material.
Claims (4)
1. the root braiding reinforcing technology of hollow fiber film assembly is that the braiding of film silk is carried out at the top of membrane module and gluing place of bottom.It is characterized in that: root braiding reinforcing technology can effectively improve the local mechanical intensity of original material hollow fiber film assembly, and can effectively improve the flow channel for liquids of membrane module.
2, root braiding reinforcing technology as claimed in claim 1 is characterized in that: utilize materials such as the stronger hydrophobic cord of corrosion resistance, nylon to carry out the braiding of film silk at the top of hollow fiber film assembly and gluing place of bottom.
3. root braiding reinforcing technology as claimed in claim 1, it is characterized in that: the quantity that guarantees every bundle film silk in the braiding process is the 10-50 root, the position of braiding is 5-10CM place apart from the gluing end, and the diaphragm to both sides carries out similar braiding respectively, the braiding line number be 1 walk to 5 capable.
4. root braiding reinforcing technology as claimed in claim 1; it is characterized in that: present technique can be used in scale; braiding is convenient; can effectively improve the glued local mechanical strength of original material membrane module; and can effectively improve the flow channel for liquids of membrane module integral body, prevent the assembly of mud between the film silk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100647718A CN100396366C (en) | 2005-04-21 | 2005-04-21 | Hollow fiberous-membrane assembly root braiding reinforcing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100647718A CN100396366C (en) | 2005-04-21 | 2005-04-21 | Hollow fiberous-membrane assembly root braiding reinforcing technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1853763A true CN1853763A (en) | 2006-11-01 |
| CN100396366C CN100396366C (en) | 2008-06-25 |
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ID=37194402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100647718A Expired - Fee Related CN100396366C (en) | 2005-04-21 | 2005-04-21 | Hollow fiberous-membrane assembly root braiding reinforcing technology |
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| CN (1) | CN100396366C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009015566A1 (en) * | 2007-07-27 | 2009-02-05 | Suzhou Litree Purifying Technology Co. Ltd. | A hollow-fibre membrane assembly having the function of preventing the membrane filaments from cracking |
| CN101746880B (en) * | 2008-12-12 | 2011-09-14 | 中国科学院生态环境研究中心 | Rotatable hollow-fibre membrane assembly of membrane thread bundling filling and transverse collector pipe |
| CN107952369A (en) * | 2016-10-14 | 2018-04-24 | 中国科学院大连化学物理研究所 | A kind of hollow fiber membrane contactors and its application |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5702601A (en) * | 1996-03-29 | 1997-12-30 | Praxiar Technology, Inc. | Structure enhancing hollow fiber module |
| US5779897A (en) * | 1996-11-08 | 1998-07-14 | Permea, Inc. | Hollow fiber membrane device with inert filaments randomly distributed in the inter-fiber voids |
| CN1180875C (en) * | 2000-12-15 | 2004-12-22 | 中国科学院生态环境研究中心 | Diaphragm separator |
| KR100493113B1 (en) * | 2001-12-07 | 2005-05-31 | 주식회사 코오롱 | A braid-reinforced hollow fiber membrane |
| JP2003245528A (en) * | 2002-02-26 | 2003-09-02 | Mitsubishi Rayon Co Ltd | Method for manufacturing fiber reinforced porous hollow fiber membrane |
| KR100910844B1 (en) * | 2002-07-19 | 2009-08-06 | 주식회사 파라 | Outside-in hollow fiber membrane having supporting body including mono-filament yarn for gas separation and water treatment, preparation thereof and apparatus for preparing the same |
-
2005
- 2005-04-21 CN CNB2005100647718A patent/CN100396366C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009015566A1 (en) * | 2007-07-27 | 2009-02-05 | Suzhou Litree Purifying Technology Co. Ltd. | A hollow-fibre membrane assembly having the function of preventing the membrane filaments from cracking |
| US8246827B2 (en) | 2007-07-27 | 2012-08-21 | Suzhou Litree Purifying Technology Co. Ltd. | Hollow-fiber membrane assembly having the function of preventing the membrane filaments from cracking |
| CN101746880B (en) * | 2008-12-12 | 2011-09-14 | 中国科学院生态环境研究中心 | Rotatable hollow-fibre membrane assembly of membrane thread bundling filling and transverse collector pipe |
| CN107952369A (en) * | 2016-10-14 | 2018-04-24 | 中国科学院大连化学物理研究所 | A kind of hollow fiber membrane contactors and its application |
| CN107952369B (en) * | 2016-10-14 | 2020-06-09 | 中国科学院大连化学物理研究所 | Hollow fiber membrane contactor and application thereof |
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| Publication number | Publication date |
|---|---|
| CN100396366C (en) | 2008-06-25 |
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Granted publication date: 20080625 Termination date: 20110421 |