JP3147929B2 - External pressure type hollow fiber membrane module - Google Patents
External pressure type hollow fiber membrane moduleInfo
- Publication number
- JP3147929B2 JP3147929B2 JP17376791A JP17376791A JP3147929B2 JP 3147929 B2 JP3147929 B2 JP 3147929B2 JP 17376791 A JP17376791 A JP 17376791A JP 17376791 A JP17376791 A JP 17376791A JP 3147929 B2 JP3147929 B2 JP 3147929B2
- Authority
- JP
- Japan
- Prior art keywords
- hollow fiber
- fiber membrane
- membrane module
- resin
- pressure type
- 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.)
- Expired - Fee Related
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- Separation Using Semi-Permeable Membranes (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は外圧型の中空糸型膜モジ
ュールに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an external pressure type hollow fiber membrane module.
【０００２】[0002]
【従来の技術】逆浸透法装置、限外濾過装置、あるいは
精密濾過装置の心臓部である半透膜モジュールは用途に
応じて各種の形式のものが用いられており、その中の１
つである中空糸型膜モジュールは長さ 100〜2000mm、外
径0.02〜２mmφ程度で数十本〜数万本の中空糸を含有し
ており、コンパクトなことより、各分野で広く用いられ
ている。これらの中空糸型膜モジュールのうち、中空糸
束の片端が開口し、他端が相互に接着されておらず、ま
たケースとも接着されていないで、かつ、個々の中空糸
の端部が封止されている中空糸型膜モジュールが考えら
れている。この様なモジュールは、どの様な分野にでも
対応できるが、一般的には、中空糸の外から内側へ、処
理液を通過させる外圧型のモジュールとして用いられる
と考えられる。2. Description of the Related Art Various types of semipermeable membrane modules, which are the heart of a reverse osmosis apparatus, an ultrafiltration apparatus, or a microfiltration apparatus, are used depending on the application.
The hollow fiber membrane module, which is one of them, has a length of 100 to 2000 mm, an outer diameter of about 0.02 to 2 mmφ, and contains tens to tens of thousands of hollow fibers.Because it is compact, it is widely used in various fields. I have. Of these hollow fiber membrane modules, one end of the hollow fiber bundle is open, the other end is not bonded to each other, is not bonded to the case, and the end of each hollow fiber is sealed. A stopped hollow fiber membrane module is contemplated. Although such a module can be used in any field, it is generally considered that the module is used as an external pressure type module that allows the processing liquid to pass from the outside to the inside of the hollow fiber.
【０００３】この個々に封止された中空糸束の封止は、
いろいろな方法が考えられる。たとえば、熱をかけて中
空糸をヒートシールする方法や、中空糸の内部に個々に
樹脂を注入する方法がある。これによって出来た中空糸
型膜モジュールにおいて、前者のものでは、逆圧がかか
ったとき、封止した部分に比較的リークを生じやすいの
が欠点である。一方、後者のものでは、比較的、信頼性
の高い中空糸型膜モジュールが得られる。[0003] The sealing of the individually sealed hollow fiber bundle is performed as follows.
Various methods are conceivable. For example, there is a method of applying heat to heat-seal the hollow fiber, or a method of individually injecting resin into the inside of the hollow fiber. In the hollow fiber membrane module produced by this, the former has a drawback in that when a reverse pressure is applied, a leak is relatively likely to occur in the sealed portion. On the other hand, with the latter, a relatively reliable hollow fiber membrane module can be obtained.
【０００４】中空糸型膜モジュールには、処理をする液
を中空糸の内側から通し、中空糸の外側へ透過液を流す
内圧型と、それと逆に中空糸の外側から処理する液を通
し、中空糸の内側へ透過液を流す外圧型がある。処理す
る液の懸濁物質の含有量が少ない場合は、どちらの型を
使用しても大きな問題はない。しかし、懸濁物質の含有
量が多い場合、膜で濾過すると懸濁物質の膜面上への蓄
積により膜がファウリングを起こし易いため、クロスフ
ロー方式をとりやすい内圧式が良く用いられて来た。し
かし、近年、外圧型の中空糸型膜モジュールがこの様な
懸濁物質を含む系にも用いられてきている。この理由の
１つに以下の様な事が考えられている。中空糸型膜モジ
ュールは内表面と外表面での膜面積が異なる。内表面と
外表面を比較すると、外表面の方が大きくなる。これは
中空糸の膜の厚さによってその差は違ってくるが、通常
1.2〜 2.0倍程度外表面の方が大きくなる。膜の面積が
大きい方が補捉できる粒子の量も多くなることから、内
圧式よりも外圧式の方が有利と一般的には考えられてい
る。この様な外圧式の中空糸型モジュールの場合、内圧
式で使用する場合と比較し、処理する液を膜に対し均一
に流すことは一般的に困難であり、外圧型の利点を生か
し切れていないのが現状である。[0004] In the hollow fiber membrane module, through the liquid to the process from the inside of the hollow fiber, through a pressure-type flow outside to permeate the hollow fiber, at the same liquid to be treated from the outside of the hollow fiber Conversely, There is an external pressure type in which a permeated liquid flows into a hollow fiber. When the content of the suspended substance in the liquid to be treated is small, there is no major problem using either type. However, when the content of suspended substances is large, filtration using a membrane causes fouling of the membrane due to accumulation of suspended substances on the membrane surface. Was. However, in recent years, an external pressure type hollow fiber membrane module has been used in a system containing such a suspended substance. One of the reasons is considered as follows. The hollow fiber membrane module has different membrane areas on the inner surface and the outer surface. When comparing the inner surface with the outer surface, the outer surface is larger. The difference depends on the thickness of the hollow fiber membrane.
The outer surface becomes larger by about 1.2 to 2.0 times. It is generally considered that the external pressure type is more advantageous than the internal pressure type because the larger the area of the film, the larger the amount of particles that can be captured. In the case of such an external pressure type hollow fiber type module, it is generally difficult to make the liquid to be treated uniformly flow through the membrane as compared with the case of using the internal pressure type, and the advantages of the external pressure type are fully utilized. There is no present.
【０００５】[0005]
【発明が解決しようとする課題】外圧型の中空糸型膜モ
ジュールにおいて、中空糸束の片端のみを中空糸相互
間、ケースと中空糸との接着封止を行っているものが多
数ある。このうち、ケースと接着していない側の封止に
ついては、色々な形式のものが見られる。例えば、中空
糸束をＵターンさせてＵ字端としているものや、中空糸
束をまとめて、接着封止しているものがある。しかし、
これらはこの部分が処理する液の膜面の流れを不均一に
してしまっている。この現象は、前者では、Ｕターンし
た部分で処理する液の圧力損失を招く結果、この部分が
処理する液中の懸濁物やゴミの溜まりになったりし、一
方後者では、中空糸束がまとめて接着封止されている内
側の中空糸に処理する液が流れにくくなる結果、膜の性
能が充分に発揮できなくなり、この部分が処理する液中
の懸濁物やゴミの溜まりになったりするからである。従
って、望ましくはケースと接着していない側は、中空糸
各々がバラバラであることが良い。しかし、中空糸束膜
モジュールにおいて、中空糸がバラバラになった部分の
封止は難しく、例えば熱融着装置の様なもので、中空糸
各々を圧着したり、また溶剤等で中空糸を溶かして封止
することが考えられているが、前者においては、中空糸
の外から内へ圧力がかかる場合は問題はないが、逆洗等
を行う様な、中空糸の内から外へ圧力がかかった場合
は、比較的簡単に融着部分が破壊してしまい、リークし
てしまう。また、後者においても同様に完全で安全な封
止ではない。この発明は、上記の実情を鑑みてなされた
ものであり、中空糸束の各々の中空糸が完全でリークの
ない様封止された耐久性の高い外圧型の中空糸型膜モジ
ュールを提供することを目的とする。There are many external pressure type hollow fiber membrane modules in which only one end of a hollow fiber bundle is bonded and sealed between hollow fibers and between a case and a hollow fiber. Of these, various types of sealing on the side not bonded to the case are seen. For example, there is a type in which the hollow fiber bundle is turned into a U-shape by making a U-turn, and a type in which the hollow fiber bundles are collectively bonded and sealed. But,
These make the flow of the liquid to be treated in this portion uneven on the film surface. In the former, this phenomenon causes a pressure loss of the liquid to be processed in the U-turned portion, and this portion becomes a pool of suspended matter and dust in the liquid to be processed, while in the latter, the hollow fiber bundle is formed. As a result, it becomes difficult for the liquid to be processed to flow into the inner hollow fiber that is adhered and sealed together.As a result, the performance of the membrane cannot be sufficiently exerted, and this portion becomes a pool of suspended solids and dust in the liquid to be processed. Because you do. Therefore, desirably, the hollow fibers on the side that is not bonded to the case are each separated. However, in the hollow fiber bundle membrane module, it is difficult to seal the portion where the hollow fibers are separated, and for example, a heat fusion device is used to compress the hollow fibers individually or to melt the hollow fibers with a solvent or the like. In the former, there is no problem when pressure is applied from the outside to the inside of the hollow fiber, but pressure is applied from the inside to the outside of the hollow fiber, such as when performing backwashing. If so, the fused portion is relatively easily broken and leaks. Similarly, the latter is not a complete and safe seal. The present invention has been made in view of the above circumstances, and provides a highly durable external pressure type hollow fiber membrane module in which each hollow fiber of a hollow fiber bundle is sealed so as not to leak completely. The purpose is to:
【０００６】[0006]
【課題を解決するための手段】即ち本発明は、中空糸膜
の外から内へ処理する液を濾過する外圧型の中空糸型膜
モジュールであって、中空糸束の片端が開口し、他端が
中空糸相互に接着されていないでその端部の中空糸内部
が各々樹脂によって封止されており、且つこの樹脂が中
空糸膜厚内の一部に入り込んでおり、中空糸膜厚内に入
り込んだ樹脂の平均厚さが１μｍ以上であることを特徴
とする外圧型の中空糸型膜モジュールを提供するもので
ある。本発明の中空糸束膜モジュールのポイントは、ケ
ースと接着されていない側のバラバラになった中空糸の
内部が樹脂によって詰められており、且つ詰められた樹
脂の一部が中空糸膜厚内の一部に入り込んで、強く封止
されているところにある。中空糸の内部に樹脂を詰めて
いるだけでは、充分な接着力を得られないこと、長期の
使用に耐えないこと、中空糸内側から逆洗などのために
圧力をかけた場合に耐えないことなどが予想されるが、
本発明を用いると樹脂の一部が中空糸膜厚内に入り込ん
でいるため、アンカー効果や、接着面積の広がりによっ
て非常に強い封止が可能となる。また、膜厚内すべてが
樹脂で満たされていても良いし、中空糸の外表面に一部
が出ていても良い。中空糸内部を詰める樹脂の量はいく
らでも良い。中空糸長さ方向に詰める量で言えば、いく
らでも良いが、少なすぎると耐圧性が悪くなる。逆に、
多すぎると中空糸の膜として機能を果たす有効長さが短
くなることから、好ましくは中空糸内径の１倍から 100
倍程度と考えられる。That is, the present invention relates to an external pressure type hollow fiber membrane module for filtering a liquid to be treated from the outside to the inside of a hollow fiber membrane. The ends are not bonded to each other and the inside of the hollow fiber at the end is sealed with a resin, and the resin penetrates a part of the thickness of the hollow fiber. Enter
It is an object of the present invention to provide an external pressure type hollow fiber membrane module characterized in that the average thickness of the loaded resin is 1 μm or more . The point of the hollow fiber bundle membrane module of the present invention is that the inside of the separated hollow fiber on the side not bonded to the case is filled with resin, and a part of the filled resin is within the hollow fiber film thickness. And is partly sealed. Just filling the inside of the hollow fiber with resin does not provide sufficient adhesive strength, does not withstand long-term use, and does not withstand pressure applied to the inside of the hollow fiber for backwashing etc. Is expected,
According to the present invention, since a part of the resin enters into the thickness of the hollow fiber, very strong sealing can be achieved by the anchor effect and the expansion of the bonding area. Further, the entire film thickness may be filled with the resin, or a part may be exposed on the outer surface of the hollow fiber . The amount of resin filling the inside of the hollow fiber may be any amount. Speaking of the amount packed in the length direction of the hollow fiber, any amount may be used, but if it is too small, the pressure resistance deteriorates. vice versa,
If the amount is too large, the effective length of functioning as a hollow fiber membrane becomes short.
It is considered about double.
【０００７】本発明の接着に用いられる樹脂としては、
常温で液状又は加熱により液状になればどの様なもので
もよい。例えば一例を挙げると、ポリオレフィン系樹
脂、ポリ酢酸ビニル系樹脂、ポリアミド系樹脂、フッ素
基含有樹脂、ポリビニルアルコール系樹脂、ポリアクリ
ロニトリル系樹脂、ポリメチルメタクリレート系樹脂、
エポキシ系樹脂、ウレタン系樹脂、ポリカーボネート系
樹脂、ポリサルホン系樹脂及び酢酸セルロース系樹脂な
どが挙げられ、またこれら２種以上を混合して使用して
も良い。このうち、エポキシ系樹脂、ウレタン系樹脂
は、常温で液状のものが接着剤として多く製造されてお
り、無溶剤型で硬化後の収縮も小さく、また耐熱性の高
いものも選択することができ、本発明に使用する樹脂と
しては、非常に適しており、好ましい。本発明で用いる
中空糸の構造は、どの様なものでもよい。好ましくは、
中空糸の端部の信頼性を向上するためのアンカー効果に
よる樹脂の封止をより確実にするため、中空糸の内表面
は多孔質の方がよい。多孔質の方が、より高分子量の樹
脂でも中空糸の膜厚内に侵入しやすいためである。具体
的には、実質的に0.05μｍ以上の孔径の孔が内表面に開
いていれば、好ましい。一方、内表面がスキン層になっ
ていて、非常に細かい孔しか開いていない場合でも、封
止する樹脂を加温し、粘度を低くしたり、粘度の低いも
のを選択したり、また長い時間液状の樹脂につけておく
等して、膜厚内に樹脂を侵入させることは可能である。[0007] The resin used in the bonding of the present invention includes:
Any material may be used as long as it is liquid at room temperature or liquid by heating. For example, polyolefin resins, polyvinyl acetate resins, polyamide resins, fluorine-containing resins, polyvinyl alcohol resins, polyacrylonitrile resins, polymethyl methacrylate resins,
Examples thereof include an epoxy resin, a urethane resin, a polycarbonate resin, a polysulfone resin, and a cellulose acetate resin, and a mixture of two or more thereof may be used. Of these, epoxy-based resins and urethane-based resins are often manufactured as adhesives in liquid form at room temperature, and non-solvent type, with small shrinkage after curing, and those with high heat resistance can also be selected. Very suitable and preferred as the resin used in the present invention. The hollow fiber used in the present invention may have any structure. Preferably,
The inner surface of the hollow fiber is preferably porous so as to more reliably seal the resin by the anchor effect for improving the reliability of the end of the hollow fiber. This is because the porous material allows even a higher molecular weight resin to easily penetrate into the thickness of the hollow fiber. Specifically, it is preferable that pores having a pore diameter of substantially 0.05 μm or more are opened on the inner surface. On the other hand, even when the inner surface is a skin layer and only very fine holes are opened, the resin to be sealed is heated and the viscosity is reduced, or a material having a low viscosity is selected, or for a long time. It is possible to infiltrate the resin into the film thickness by attaching it to a liquid resin.
【０００８】[0008]
【実施例】以下に実施例に基づいて本発明を詳細に説明
する。尚、本発明は実施例によって限定されるものでは
ない。 実施例１ 内径 400μｍ、外径 680μｍ、長さが70cmのポリエーテ
ルサルホン中空糸膜520本からなる中空糸束（グリセリ
ンを含浸し、実質的に空気を通さないようにした中空糸
膜から成る）の片端を速硬化型のエポキシ系接着剤〔ボ
ンドクイック５、コニシ（株）製〕で中空糸相互間及び
個々の中空糸を封止した後、もう一方の端部をエポキシ
接着剤エピコート815 の80重量％と、エピキュアＴの20
重量％〔共に油化シェルエポキシ（株）製〕とを常温で
混合したものの中に浸漬した後、即座にエアーによって
0.15kg/cm2の圧力を中空糸外側にかけてそのまま１晩放
置し、硬化させた。その後、接着剤が中空糸の中空内へ
入っている高さと、中空糸外周りへの接着剤のはい上が
りの高さとの中間で中空糸を切断し、中空糸各々が封止
された中空糸束とした。この中空糸束を内径26mmφのア
クリル製ケースに充填し、中空糸各々が封止されていな
い側をウレタン系接着剤で中空糸相互間及びケースを接
着封止し、中空糸型膜モジュールとした。ここで使用し
た中空糸の内部が封止された部分を、顕微鏡で観察した
ところ、中空糸の内側から１μｍ以上中空糸膜厚内に接
着剤が侵入していた。この膜モジュールの中空糸内側サ
イドから水を圧力３Kg/cm2で通水を10秒間行い、即座に
止めて10秒間保ち、再び圧力３Kg/cm2で通水をする操作
を１回として、この操作を1000回繰り返したが、この膜
モジュールの中空糸端部からはリークは全くなかった。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on embodiments. Note that the present invention is not limited by the embodiments. Example 1 A hollow fiber bundle composed of 520 polyether sulfone hollow fiber membranes having an inner diameter of 400 μm, an outer diameter of 680 μm, and a length of 70 cm (consisting of a hollow fiber membrane impregnated with glycerin and substantially prevented from passing air. ) Is sealed between the hollow fibers and each hollow fiber with a quick-curing epoxy adhesive [Bond Quick 5, manufactured by Konishi Co., Ltd.], and the other end is an epoxy adhesive Epicoat 815. 80% by weight and EpiCure T 20
% By weight (both manufactured by Yuka Shell Epoxy Co., Ltd.) at room temperature and immediately immersed in air.
A pressure of 0.15 kg / cm 2 was applied to the outside of the hollow fiber and left as it was overnight for curing. Thereafter, the hollow fiber is cut in the middle between the height at which the adhesive enters the hollow of the hollow fiber and the height at which the adhesive rises to the outer periphery of the hollow fiber, and the hollow fiber in which each hollow fiber is sealed A bundle. This hollow fiber bundle was filled in an acrylic case having an inner diameter of 26 mmφ, and the side where the hollow fibers were not sealed was bonded and sealed between the hollow fibers and the case with a urethane-based adhesive to form a hollow fiber membrane module. . When the portion where the inside of the hollow fiber used here was sealed was observed with a microscope, it was found that the adhesive had penetrated into the film thickness of the hollow fiber by 1 μm or more from the inside of the hollow fiber. Water was passed through the inside of the hollow fiber side of this membrane module at a pressure of 3 kg / cm 2 for 10 seconds, immediately stopped and maintained for 10 seconds, and the operation of passing water again at a pressure of 3 kg / cm 2 was performed once. The operation was repeated 1,000 times, but there was no leak from the end of the hollow fiber of this membrane module.
【０００９】実施例２ 端部封止に用いるエポキシ接着剤エピコート807 の63重
量％〔油化シェルエポキシ（株）製〕と、ハードナーHY
830の27重量％と、ハードナーHY 850の10重量％〔共に
日本チバガイギー（株）製〕とを50℃で混合し、エアー
圧は0.20Kg/cm2で行い、50℃で１晩硬化させた以外は、
実施例１と全く同様にして中空糸型膜モジュールを得
た。中空糸膜厚内への接着剤の侵入は、１μｍ以上あっ
た。実施例１と全く同様の評価をしたが、1000回の繰り
返し操作でもリークは全くなかった。Example 2 63% by weight of an epoxy adhesive Epicoat 807 used for end sealing (manufactured by Yuka Shell Epoxy Co., Ltd.) and a hardener HY
27% by weight of 830 and 10% by weight of Hardener HY850 (both manufactured by Nippon Ciba Geigy Co., Ltd.) were mixed at 50 ° C., the air pressure was set at 0.20 kg / cm 2 , and the mixture was cured at 50 ° C. overnight. except,
A hollow fiber membrane module was obtained in exactly the same manner as in Example 1. The penetration of the adhesive into the hollow fiber film thickness was 1 μm or more. The evaluation was exactly the same as in Example 1, but there was no leak even after 1000 repetitions.
【００１０】実施例３ 内径 500μｍ、外径 800μｍ、長さが70cmのポリエーテ
ルサルホン中空糸膜で内表面に0.05〜0.2 μｍの孔を有
している膜であり、本数は 376本から成る中空糸束（グ
リセリンを含浸し、実質的に空気を通さないようにした
中空糸膜からなる）の片端を実施例１と同じ速硬化型の
エポキシ系接着剤で中空糸相互間及び個々の中空糸を封
止した後、もう一方の端部をウレタン系接着剤コロネー
ト4403の60重量％とニッポラン4224の40重量％〔共に日
本ポリウレタン（株）製〕とを、常温で混合したものの
中に浸漬し、即座に0.25Kg/cm2の圧力を中空糸外側にか
けてそのまま１晩放置し、硬化させた。この後は、実施
例１と全く同様にして中空糸型膜モジュールを得た。中
空糸膜厚内への接着剤の侵入は１μｍ以上あった。実施
例１と全く同様の評価をしたが、1000回の繰り返し操作
でも全くリークはなかった。Example 3 A polyethersulfone hollow fiber membrane having an inner diameter of 500 μm, an outer diameter of 800 μm, and a length of 70 cm, having 0.05-0.2 μm pores on the inner surface. The number of the membranes is 376. One end of a hollow fiber bundle (consisting of a hollow fiber membrane impregnated with glycerin and substantially impervious to air) is filled with the same quick-curing epoxy adhesive as in Example 1 between hollow fibers and between individual hollow fibers. After sealing the yarn, the other end is immersed in a mixture of 60% by weight of urethane adhesive Coronate 4403 and 40% by weight of Nipporan 4224 (both manufactured by Nippon Polyurethane Co., Ltd.) at room temperature. Immediately, a pressure of 0.25 kg / cm 2 was applied to the outside of the hollow fiber, and the mixture was allowed to stand overnight to cure. Thereafter, a hollow fiber membrane module was obtained in exactly the same manner as in Example 1. The penetration of the adhesive into the hollow fiber film thickness was 1 μm or more. The evaluation was exactly the same as in Example 1, but there was no leak even after 1000 repetitions.
【００１１】実施例４ 内径1500μｍ、外径2200μｍ、長さが60cmのポリエーテ
ルサルホン中空糸膜で、内表面に 0.2〜0.6 μｍの孔を
有している膜であり、50本の本数から成る中空糸束（グ
リセリンを含浸し、実質的に空気を通さないようにした
中空糸膜からなる）の片端を実施例１と同じ速硬化型の
エポキシ系接着剤で、中空糸相互間及び個々の中空糸を
封止した後、もう一方の端部を160 ℃で溶解したナイロ
ン系樹脂ダイアミド430 〔ダイセルヒュルス（株）製〕
の中に浸漬し、即座に0.2Kg/cm2の圧力を中空糸外側に
かけて１時間放置した後、温度を室温にもどし樹脂を硬
化させた。その後は、実施例１と全く同様にして中空糸
型膜モジュールを得た。中空糸膜厚内への樹脂の侵入は
１μｍ以上あった。実施例１と全く同じ操作をしたが、
1000回の繰り返し操作をしても全くリークはなかった。Example 4 A polyether sulfone hollow fiber membrane having an inner diameter of 1500 μm, an outer diameter of 2200 μm, and a length of 60 cm, having a hole of 0.2 to 0.6 μm on the inner surface. One end of each of the hollow fiber bundles (comprising a hollow fiber membrane impregnated with glycerin and substantially impervious to air) is coated with the same quick-curing epoxy adhesive as in Example 1 between hollow fibers and individually. After sealing the hollow fiber of the above, the other end is melted at 160 ° C. at 160 ° C. to obtain a nylon-based resin, Daiamide 430 [manufactured by Daicel Huls Co., Ltd.]
And immediately left for 1 hour by applying a pressure of 0.2 kg / cm 2 to the outside of the hollow fiber, and then the temperature was returned to room temperature to cure the resin. Thereafter, a hollow fiber membrane module was obtained in exactly the same manner as in Example 1. The penetration of the resin into the hollow fiber film thickness was 1 μm or more. The same operation as in Example 1 was performed,
There were no leaks after 1000 repetitions.
【００１２】比較例１ 端部封止に用いるエポキシ系接着剤をエピコート828 の
63重量％〔油化シェルエポキシ（株）製〕と、ハードナ
ーHY 830の20重量％と、ハードナーHY 850の17重量％
〔共に日本チバガイギー（株）製〕とを常温で混合した
以外は、実施例２と全く同様にして中空糸型膜モジュー
ルを得た。中空糸膜厚内への接着剤の侵入は、電子顕微
鏡観察の範囲内では見られず、１μｍ以下であった。実
施例１と全く同じ操作で評価したところ、500 回の繰り
返し操作において、既に中空糸端部からリークが生じて
いた。Comparative Example 1 An epoxy-based adhesive used for edge sealing was
63% by weight (manufactured by Yuka Shell Epoxy Co., Ltd.), 20% by weight of Hardener HY 830, and 17% by weight of Hardener HY 850
A hollow fiber membrane module was obtained in exactly the same manner as in Example 2 except that [both manufactured by Nippon Ciba Geigy Co., Ltd.] were mixed at room temperature. Penetration of the adhesive into the hollow fiber film thickness was not observed within the range observed by an electron microscope, and was 1 μm or less. When the evaluation was performed in exactly the same manner as in Example 1, a leak had already occurred from the end of the hollow fiber after 500 repetitions of the operation.
【００１３】比較例２ 内径 500μｍ、外径 800μｍ、長さが70cmのポリエーテ
ルサルホン中空糸膜で内表面は0.01μｍ以下の孔である
膜を使用した以外は、実施例２と全く同様にして、中空
糸型膜モジュールを得た。中空糸膜厚内への接着剤の侵
入は、電子顕微鏡観察の範囲内では見られず、１μｍ以
下であった。実施例１と全く同じ操作で評価したとこ
ろ、 500回の繰り返し操作において既に中空糸端部から
リークが生じていた。Comparative Example 2 The same procedure as in Example 2 was carried out except that a polyether sulfone hollow fiber membrane having an inner diameter of 500 μm, an outer diameter of 800 μm, and a length of 70 cm and having an inner surface having pores of 0.01 μm or less was used. Thus, a hollow fiber membrane module was obtained. Penetration of the adhesive into the hollow fiber film thickness was not observed within the range observed by an electron microscope, and was 1 μm or less. When the evaluation was performed in exactly the same manner as in Example 1, a leak had already occurred from the end of the hollow fiber after 500 repetitions.
【００１４】[0014]
【発明の効果】本発明の外圧型の中空糸型膜モジュール
は、相互に接着されていない中空糸端部の中空糸内面の
膜厚内の一部に入り込んで各々樹脂によって封止されて
いるので、完全にリークがなく、逆洗時においても耐久
性が高く、且つ信頼性がある膜モジュールである。本発
明の膜モジュールの用途としては、どの様な分野にでも
用いることができるが、特に固形物、懸濁物を多く含む
液体、あるいは粘度が高い液体を処理する場合、有効と
なる。例えば、中水道、下水道、し尿処理における分
野、塗料の回収、メッキ液の回収、果汁の処理、河川水
等自然水の浄化、菌体液の処理、酵素液の処理、醤油の
処理等がその一例に挙げられる。The external pressure type hollow fiber membrane module of the present invention enters a part of the thickness of the inner surface of the hollow fiber at the end of the hollow fiber which is not bonded to each other, and is sealed with resin. Therefore, the membrane module is completely leak-free, has high durability even during backwashing, and has high reliability. The membrane module of the present invention can be used in any field, but is particularly effective when a liquid containing a large amount of solids or suspensions or a liquid having a high viscosity is treated. For example, fields in the sewerage system, sewerage system, human waste treatment, paint collection, plating solution recovery, fruit juice treatment, purification of natural water such as river water, treatment of bacterial fluid, enzyme solution treatment, soy sauce treatment, etc. It is listed.
Claims (3)
する外圧型の中空糸型膜モジュールであって中空糸束の
片端が開口し、他端が中空糸相互に接着されていないで
その端部の中空糸内部が各々樹脂によって封止されてお
り、且つこの樹脂が中空糸膜厚内の一部に入り込んでお
り、中空糸膜厚内に入り込んだ樹脂の平均厚さが１μｍ
以上であることを特徴とする外圧型の中空糸型膜モジュ
ール。1. An external pressure type hollow fiber membrane module for filtering a liquid to be treated from the outside to the inside of a hollow fiber membrane, wherein one end of a hollow fiber bundle is open and the other end is not bonded to each other. The inside of the hollow fiber at the end is sealed with a resin, and this resin enters a part of the hollow fiber film thickness .
The average thickness of the resin that enters the hollow fiber film thickness is 1 μm
An external pressure type hollow fiber membrane module characterized by the above .
内に詰められた樹脂がエポキシ系接着剤またはウレタン
系接着剤である請求項１記載の外圧型の中空糸型膜モジ
ュール。Wherein an external pressure type hollow fiber membrane module of claim 1 wherein the hollow fiber ends hollow fiber interior and the hollow fiber membrane thickness in the packed resin of epoxy adhesive or a urethane-based adhesive.
以上の孔径の孔が実質的に存在する請求項１又は２記載
の外圧型の中空糸型膜モジュール。3. An inner surface of the hollow fiber membrane to be used having a thickness of 0.05 μm
The external pressure type hollow fiber membrane module according to claim 1 or 2 , wherein a hole having the above-mentioned hole diameter is substantially present.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17376791A JP3147929B2 (en) | 1991-07-15 | 1991-07-15 | External pressure type hollow fiber membrane module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17376791A JP3147929B2 (en) | 1991-07-15 | 1991-07-15 | External pressure type hollow fiber membrane module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0515746A JPH0515746A (en) | 1993-01-26 |
| JP3147929B2 true JP3147929B2 (en) | 2001-03-19 |
Family
ID=15966772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17376791A Expired - Fee Related JP3147929B2 (en) | 1991-07-15 | 1991-07-15 | External pressure type hollow fiber membrane module |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3147929B2 (en) |
-
1991
- 1991-07-15 JP JP17376791A patent/JP3147929B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0515746A (en) | 1993-01-26 |
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