JPH0975692A - Method for manufacturing hollow fiber membrane module - Google Patents
Method for manufacturing hollow fiber membrane moduleInfo
- Publication number
- JPH0975692A JPH0975692A JP24108695A JP24108695A JPH0975692A JP H0975692 A JPH0975692 A JP H0975692A JP 24108695 A JP24108695 A JP 24108695A JP 24108695 A JP24108695 A JP 24108695A JP H0975692 A JPH0975692 A JP H0975692A
- Authority
- JP
- Japan
- Prior art keywords
- hollow fiber
- fiber membrane
- membrane module
- hydrophilicity
- module
- 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
Links
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
(57)【要約】
【課題】 中空糸膜モジュールの完全性を確認できて、
かつ、被処理液中に混入した空気を効率的に除く。
【解決手段】 中空糸膜に付着している親水性付与剤を
部分的に除去する中空糸膜の製造方法。(57) [Abstract] [Problem] To confirm the integrity of the hollow fiber membrane module,
In addition, the air mixed in the liquid to be treated is efficiently removed. A method for producing a hollow fiber membrane, in which a hydrophilicity-imparting agent attached to the hollow fiber membrane is partially removed.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、親水性付与剤を除
去して中空糸膜の一部を疎水性にすることによって、被
処理液中の空気を効率的に除くことができる中空糸膜モ
ジュールの製造方法に関する。TECHNICAL FIELD The present invention relates to a hollow fiber membrane capable of efficiently removing air in a liquid to be treated by removing a hydrophilicity-imparting agent to make a part of the hollow fiber membrane hydrophobic. The present invention relates to a method of manufacturing a module.
【０００２】[0002]
【従来の技術】全ろ過式のフィルターでは、被処理液中
に混入した空気を、モジュールを装着するハウジングに
設けた気泡抜き口から抜き出していたが、近年、中空糸
膜がフィルターモジュールとして使われるようになる
と、被処理液に濡れない疎水性の中空糸膜を混入させる
ことによって自動的に気泡が抜けるものが開発された
（例えば、特開昭６３−１１９８０２、実開昭６０−４
９９０４、実開平０３−１５６２９、実開平０４−４５
５３０、実開平０５−２７２１、実開平０５−７３２
７、実開平０５−３７３２８など）。2. Description of the Related Art In a total filtration type filter, air mixed in a liquid to be treated is extracted from an air bubble vent provided in a housing for mounting the module. In recent years, a hollow fiber membrane is used as a filter module. In this case, it has been developed that a bubble is automatically removed by mixing a hydrophobic hollow fiber membrane that does not wet the liquid to be treated (for example, JP-A-63-119822 and JP-A-60-4).
9904, Actual Kaihei 03-15629, Actual Kaihei 04-45
530, Actual Kaihei 05-2721, Actual Kaihei 05-732
7, actual Kaihei 05-37328).
【０００３】一方、疎水性の中空糸膜を混入させると、
バブルポイントの測定が不可能になるためにモジュール
の完全性を確認することができないという問題が生じ
る。On the other hand, when a hydrophobic hollow fiber membrane is mixed,
Since the bubble point cannot be measured, the integrity of the module cannot be confirmed.
【０００４】[0004]
【発明が解決しようとする課題】従来の方法のように、
モジュールに組み立てる前から疎水性中空糸膜を混入さ
せるとバブルポイントが測定できないのであるから、す
べてが親水性の中空糸膜を用いてモジュールを組立て、
バブルポイントを測定したのち、一部の中空糸膜を疎水
性にすることができれば完全性が確認できない問題点は
解決される。As in the conventional method,
Since the bubble point cannot be measured if a hydrophobic hollow fiber membrane is mixed before it is assembled into the module, the module is assembled using a hydrophilic hollow fiber membrane.
If some of the hollow fiber membranes can be made hydrophobic after measuring the bubble point, the problem that the integrity cannot be confirmed will be solved.
【０００５】[0005]
【課題を解決するための手段】親水性が、もともと疎水
性の中空糸膜に親水性のポリマーあるいは界面活性剤を
付着させることによって付与された場合には、これらの
親水性付与剤を、中空糸膜を劣化させないその溶剤で除
去すれば再び疎水性に戻る。すなわち、本発明は、中空
糸膜に付着している親水性付与剤をその溶剤で部分的に
除去したことを特徴とする中空糸膜モジュールの製造方
法を内容とする。When hydrophilicity is imparted by attaching a hydrophilic polymer or a surfactant to an originally hydrophobic hollow fiber membrane, these hydrophilicity imparting agents are If it is removed with the solvent that does not deteriorate the thread film, it becomes hydrophobic again. That is, the present invention includes a method for producing a hollow fiber membrane module, which is characterized in that the hydrophilicity-imparting agent attached to the hollow fiber membrane is partially removed with the solvent.
【０００６】疎水性中空糸膜が、ポリエチレン、ポリプ
ロプピレンのようなポリオレフィンであり、親水性付与
剤がセルロース誘導体、エチレン−ビニルアルコール共
重合体、ポリアクリロニトリル、ポリアクリルアミドな
どであれば、これらは、例えばアセトンで除去すること
ができる。疎水性中空糸膜が芳香族ポリスルホンであ
り、親水性付与剤がヒドロキシプロピルセルロース、ヒ
ドロキシプロピルメチルセルロースなどのセルロース誘
導体であれば、これらはエタノールあるいはその水溶液
で除去することができる。If the hydrophobic hollow fiber membrane is a polyolefin such as polyethylene or polypropylene, and the hydrophilicity-imparting agent is a cellulose derivative, ethylene-vinyl alcohol copolymer, polyacrylonitrile, polyacrylamide, etc., these are used. Can be removed, for example with acetone. If the hydrophobic hollow fiber membrane is an aromatic polysulfone and the hydrophilicity-imparting agent is a cellulose derivative such as hydroxypropylcellulose or hydroxypropylmethylcellulose, these can be removed with ethanol or an aqueous solution thereof.
【０００７】親水性付与剤を除去する方法は、すべてが
親水性の中空糸膜を用いて組み立てられたモジュール
を、バブルポイントを測定したのち、水で濡れたままあ
るいは乾燥したのち、単に、上記の溶剤に疎水性に戻し
たい中空糸膜の部分を適当時間浸すだけでよい。The method for removing the hydrophilicity-imparting agent is to measure the bubble point of a module assembled using a hollow fiber membrane, which is all hydrophilic, and then either wet it with water or dry it, and then simply It suffices to immerse the portion of the hollow fiber membrane that is to be made hydrophobic in the above solvent for a suitable time.
【０００８】[0008]
【実施例】以下の実施例で本発明をさらに具体的に説明
するが、これらの実施例は本発明を限定するものではな
い。 実施例１ ヒドロキシプロピルメチルセルロースで親水性を付与さ
れた、内径５００μｍ、外径８００μｍ、孔径約０．２
μｍの芳香族ポリスルホン中空糸膜１７００本を中央で
折り返して、中空糸膜の開口部をその収納ケースととも
にポリウレタン樹脂で一カ所で集束固定した、有効膜面
積が約１．６ｍ2 のフィルターモジュールを作成した。The present invention will be described in more detail by the following examples, but these examples do not limit the present invention. Example 1 Inner diameter 500 μm, outer diameter 800 μm, pore diameter about 0.2, which has been made hydrophilic with hydroxypropylmethylcellulose.
A filter module with an effective membrane area of about 1.6 m 2 was obtained by folding back 1700 μm aromatic polysulfone hollow fiber membranes at the center and focusing and fixing the openings of the hollow fiber membranes together with the storage case in one place with polyurethane resin. Created.
【０００９】このフィルターモジュールを集束固定部分
が上になるようにハウジングに装着し、水をろ過してか
ら６００ＫＰａの空気で加圧したが、連続した気泡が発
生せず、もれのない完全なモジュールであることが確認
された。このフィルターモジュールの中空糸膜を集束固
定部から約２ｃｍまでエタノールに１時間浸したのち乾
燥した。This filter module was mounted on the housing so that the focusing and fixing part was on the top, and water was filtered and then pressurized with air of 600 KPa, but no continuous air bubbles were generated and there was no leakage. It was confirmed to be a module. The hollow fiber membrane of this filter module was immersed in ethanol up to about 2 cm from the focusing and fixing part for 1 hour and then dried.
【００１０】乾燥後のフィルターモジュールを再びハウ
ジングに装着し、水をろ過してから空気で加圧したが、
空気圧が１０ＫＰａにも達せず、中空糸膜の一部が疎水
性に戻っていることが確認された。次にベンガラを分散
させた水（濃度１０ｐｐｍ）をろ過したのちフィルター
モジュールをハウジングから取り出して観察したとこ
ろ、集束固定部から約２ｃｍの中空糸膜のみが白く、そ
の他の部分は赤く着色していたことから、親水性付与剤
を除去した部分ではろ過が行われず、疎水性に戻ってい
ることが確認された。 実施例２ 実施例１と同じようにして作成したフィルターモジュー
ルを実施例１と同様にしてバブルポイントを測定した
後、集束固定部分と反対側の中空糸膜を先端から約２ｃ
ｍまでエタノールに１時間浸してから乾燥した。The dried filter module was mounted on the housing again, water was filtered, and then pressurized with air.
It was confirmed that the air pressure did not reach 10 KPa, and that part of the hollow fiber membrane returned to hydrophobic. Next, after filtering water (concentration: 10 ppm) in which red iron oxide was dispersed, the filter module was taken out of the housing and observed. Only the hollow fiber membrane about 2 cm from the focusing and fixing portion was white, and the other portions were colored red. Therefore, it was confirmed that the portion where the hydrophilicity-imparting agent was removed was not filtered and returned to be hydrophobic. Example 2 A bubble point of a filter module produced in the same manner as in Example 1 was measured in the same manner as in Example 1, and then the hollow fiber membrane on the side opposite to the focusing and fixing portion was removed from the tip by about 2c.
It was immersed in ethanol for 1 hour to dryness and then dried.
【００１１】実施例１と同様にして調べたところ、親水
性付与剤が除去されていることが確認された。When examined in the same manner as in Example 1, it was confirmed that the hydrophilicity-imparting agent was removed.
【００１２】[0012]
【発明の効果】以上のように本発明の製造方法によれ
ば、バブルポイントの測定による中空糸膜モジュールの
完全性を確認できた上で、混入した空気を効率よく抜く
ことができる。As described above, according to the manufacturing method of the present invention, the integrity of the hollow fiber membrane module can be confirmed by measuring the bubble point, and the mixed air can be efficiently removed.
Claims (2)
ている親水性付与剤をその溶剤で部分的に除去したこと
を特徴とする中空糸膜モジュールの製造方法。1. A method for producing a hollow fiber membrane module, characterized in that the hydrophilicity-imparting agent attached to the hollow fiber membrane of the hollow fiber membrane module is partially removed with the solvent.
り、親水性付与剤がセルロース誘導体であり、その溶剤
がエタノールもしくはその水溶液である請求項１記載の
中空糸膜モジュールの製造方法。2. The method for producing a hollow fiber membrane module according to claim 1, wherein the hollow fiber membrane is made of aromatic polysulfone, the hydrophilicity-imparting agent is a cellulose derivative, and the solvent is ethanol or an aqueous solution thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24108695A JPH0975692A (en) | 1995-09-20 | 1995-09-20 | Method for manufacturing hollow fiber membrane module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24108695A JPH0975692A (en) | 1995-09-20 | 1995-09-20 | Method for manufacturing hollow fiber membrane module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0975692A true JPH0975692A (en) | 1997-03-25 |
Family
ID=17069087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24108695A Pending JPH0975692A (en) | 1995-09-20 | 1995-09-20 | Method for manufacturing hollow fiber membrane module |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0975692A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1473073A1 (en) * | 2003-05-02 | 2004-11-03 | Norit Proces Technologie Holding B.V. | Membrane filter with deaeration and method for the manufacture thereof |
| WO2005115595A1 (en) * | 2004-05-31 | 2005-12-08 | Entegris, Inc. | Filtration membrane, filtration material and filter element |
| JP2007136449A (en) * | 2005-10-14 | 2007-06-07 | Millipore Corp | Ultrafiltration membranes and methods of manufacturing and using ultrafiltration membranes |
-
1995
- 1995-09-20 JP JP24108695A patent/JPH0975692A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1473073A1 (en) * | 2003-05-02 | 2004-11-03 | Norit Proces Technologie Holding B.V. | Membrane filter with deaeration and method for the manufacture thereof |
| NL1023332C2 (en) * | 2003-05-02 | 2004-11-03 | Norit Proces Technologie Holdi | Membrane filter with venting and method for its manufacture. |
| US7465393B2 (en) | 2003-05-02 | 2008-12-16 | Norit Proces Technologie Holding B.V. | Membrane filter with deaeration and method for the manufacture thereof |
| AU2004201846B2 (en) * | 2003-05-02 | 2009-12-17 | Norit Proces Technologie Holding B.V. | Membrane filter with deaeration and method for the manufacture thereof |
| WO2005115595A1 (en) * | 2004-05-31 | 2005-12-08 | Entegris, Inc. | Filtration membrane, filtration material and filter element |
| JP2007136449A (en) * | 2005-10-14 | 2007-06-07 | Millipore Corp | Ultrafiltration membranes and methods of manufacturing and using ultrafiltration membranes |
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