JPH07275666A - Hollow yarn membrane module - Google Patents

Hollow yarn membrane module

Info

Publication number
JPH07275666A
JPH07275666A JP7315594A JP7315594A JPH07275666A JP H07275666 A JPH07275666 A JP H07275666A JP 7315594 A JP7315594 A JP 7315594A JP 7315594 A JP7315594 A JP 7315594A JP H07275666 A JPH07275666 A JP H07275666A
Authority
JP
Japan
Prior art keywords
hollow fiber
fiber membrane
hollow yarn
module
yarns
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
Application number
JP7315594A
Other languages
Japanese (ja)
Inventor
Masaru Uehara
勝 上原
Akira Hoshiide
明 星出
Naoya Tanakamaru
直也 田中丸
Masumi Kobayashi
真澄 小林
Kenji Watari
謙治 亘
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Rayon Co Ltd
Original Assignee
Mitsubishi Rayon Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Rayon Co Ltd filed Critical Mitsubishi Rayon Co Ltd
Priority to JP7315594A priority Critical patent/JPH07275666A/en
Publication of JPH07275666A publication Critical patent/JPH07275666A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To provide a hollow yarn membrane module made hard to generate the accumulation of suspended matter between hollow yarn membranes even when adapted to the filtering of highly turbid water and hard to generate the rise of differential pressure and the lowering of a flow rate over a long period of time by using a knitted fabric containing hollow yarn membranes and having restricting yarns over the entire surface thereof. CONSTITUTION:The end parts of linear hollow yarn membranes 4 expanding in a sheet like form are bundled and fixed by a fixing member while an open state is held between the hollow yarn membranes to form a module and the whole of the module is supported by a structural member. The hollow yarn membranes 4 are restricted in a chain stitch like form by restricting yarns 5 and these restricting yarns 5 are parallelly and densely arranged at almost equal intervals over the entire surface of the module to be formed into a knitted fabric like state. Since the restricting yarns 5 are easy to generate the propagation of various bacteria caused by the adhesion of suspended matter, a synthetic fiber coated or impregnated with an antibacterial agent is pref. used. Therefore, the accumulation of org. matter between hollow yarn membranes is hard to generate.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、中空糸膜モジュールに
関し、特に汚濁性(殊に有機物の汚濁性)の高い液体を
濾過するのに適した中空糸膜モジュールに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hollow fiber membrane module, and more particularly to a hollow fiber membrane module suitable for filtering a liquid having a high pollutant (particularly a pollutant of organic matter).

【0002】[0002]

【従来の技術】従来、中空糸膜モジュールは、無菌水、
飲料水、高純度水の製造や、空気の浄化といったいわゆ
る精密濾過の分野において多く使用されてきたが、近
年、下水処理場における二次処理、三次処理や、浄化槽
における固液分離等の高汚濁性水処理用途に用いる検討
が様々な形で行われている。
2. Description of the Related Art Conventionally, hollow fiber membrane modules have been manufactured using sterile water,
It has been widely used in the field of so-called microfiltration such as the production of drinking water and high-purity water and the purification of air, but in recent years, it has been highly polluted by secondary and tertiary treatments at sewage treatment plants and solid-liquid separation in septic tanks. Various types of studies have been conducted for use in water treatment applications.

【0003】これらの分野で用いられている中空糸膜モ
ジュールも、従来の精密濾過の分野において用いられて
きた円形状や同心円状に中空糸膜を収束して配置した円
筒形タイプのものがほとんどであった。また、改良が施
されるとしても、中空糸膜の充填率や充填形態を変える
だけのものが多かった。
Most of the hollow fiber membrane modules used in these fields are of the cylindrical type in which the hollow fiber membranes are arranged concentrically in a circular shape or concentric circles which have been used in the field of conventional microfiltration. Met. Further, even if improvements are made, most of them merely change the filling rate or filling form of the hollow fiber membrane.

【0004】[0004]

【発明が解決しようとする課題】このような従来の中空
糸膜モジュールを用いて高汚濁性水(例えば、SS≧5
0ppm,TOC≧100ppm)の濾過処理を行った
場合には、使用に伴ない中空糸膜表面に付着した有機物
等の堆積物を介して、中空糸膜同士が固着(接着)して
一体化されることにより、モジュール内の中空糸膜の有
効膜面積が低下し、濾過流量の急激な減少がみられた。
特に、この現象は円筒形モジュールの中心部の中空糸膜
において著しく、大型のもの程顕著であった。
Highly polluted water (for example, SS ≧ 5) is obtained by using such a conventional hollow fiber membrane module.
(0 ppm, TOC ≧ 100 ppm), the hollow fiber membranes are integrated (bonded) to each other through the deposits such as organic substances attached to the surface of the hollow fiber membranes due to use. As a result, the effective membrane area of the hollow fiber membrane in the module was reduced, and the filtration flow rate was rapidly reduced.
In particular, this phenomenon was remarkable in the hollow fiber membrane in the central portion of the cylindrical module, and was more remarkable in the large-sized one.

【0005】また、このようにして中空糸膜同士が固着
して一体化した中空糸膜モジュールを定期的に膜面洗浄
や逆洗を行う場合も、一旦固着一体化したモジュールの
機能回復は容易ではなく、洗浄効率の低下がみられた。
Further, even when the hollow fiber membrane module in which the hollow fiber membranes are fixed and integrated as described above is regularly subjected to membrane surface cleaning or backwashing, it is easy to recover the function of the module once fixed and integrated. However, there was a decrease in cleaning efficiency.

【0006】この問題の解決策として、集束型で円筒形
の中空糸膜モジュールに換えて、多本数の中空糸膜をシ
ート状に並び拡げて配置し、中空糸膜の片端部または両
端部が一つまたは異なる二つの構造材内において固定部
材でそれぞれの開口状態を保ちつつ固定されてなる中空
糸膜モジュールであって、固定部材の中空糸膜に垂直な
断面の形状がいずれも細長いほぼ矩形である中空糸膜モ
ジュールが提案されている(特開平5−220356号
公報等)。
As a solution to this problem, in place of the concentrating and cylindrical hollow fiber membrane module, a large number of hollow fiber membranes are arranged in a sheet form and arranged so that one end or both ends of the hollow fiber membrane are A hollow fiber membrane module in which one or two different structural members are fixed by a fixing member while maintaining their respective open states, and the shape of the cross section perpendicular to the hollow fiber membrane of the fixing member is an elongated rectangular shape. A hollow fiber membrane module is proposed (Japanese Patent Laid-Open No. 5-220356, etc.).

【0007】このようなシート状の平型の中空糸膜モジ
ュールは、中空糸膜を層間隔を設けて内外層に均等に配
置させることが可能となり、膜面洗浄の際、中空糸膜表
面を均等に洗浄することが極めて容易となるので、これ
までのような濾過効率の低下を抑えることができるな
ど、高汚濁性水の濾過に適したモジュールである。
In such a sheet-shaped flat hollow fiber membrane module, it becomes possible to evenly arrange the hollow fiber membranes in the inner and outer layers with a space between layers, and the surface of the hollow fiber membranes is washed during the cleaning of the membrane surface. It is a module suitable for filtering highly polluted water because it makes it extremely easy to wash it evenly, and can prevent the deterioration of filtration efficiency as it has been so far.

【0008】しかし、このタイプの中空糸膜モジュール
においても、汚濁度の高い原水を濾過する場合には、濾
過を続けるうちに中空糸膜間に濁質が次第に堆積した。
この濁質の堆積は有効膜面積の減少を招き、差圧の上昇
及び流量低下を引き起すことによってモジュールの寿命
を早めるという問題があった。
However, also in this type of hollow fiber membrane module, when raw water having a high degree of pollution was filtered, suspended matter gradually accumulated between the hollow fiber membranes while the filtration was continued.
The accumulation of the suspended matter causes a decrease in the effective film area, which causes a rise in the differential pressure and a decrease in the flow rate, which shortens the life of the module.

【0009】本発明の目的は、高汚濁性水の濾過に使用
しても中空糸膜間に濁質が堆積しにくく、長期に亘って
差圧の上昇及び流量低下を引き起すことが少ない中空糸
膜モジュールを提供することにある。
The object of the present invention is to prevent turbidity from accumulating between hollow fiber membranes even when used for filtration of highly polluted water, and to cause little increase in differential pressure and decrease in flow rate over a long period of time. It is to provide a yarn membrane module.

【0010】[0010]

【課題を解決するための手段】すなわち、本発明は、中
空糸膜と、中空糸膜の端部を開口状態を保ちつつこれを
固定する固定部材と、固定部材を支持収納する構造材と
を有してなり、固定部材の中空糸膜に垂直な断面の形状
が細長いほぼ矩形である中空糸膜モジュールにおいて、
該中空糸膜が中空糸膜を含む編織物からなり、該編織物
はその全面において拘束糸条を有するものである中空糸
膜モジュールである。
That is, the present invention provides a hollow fiber membrane, a fixing member for fixing the end portion of the hollow fiber membrane while keeping the end of the hollow fiber membrane open, and a structural member for supporting and housing the fixing member. A hollow fiber membrane module having a substantially rectangular elongated cross-section of the fixing member, which is perpendicular to the hollow fiber membrane,
The hollow fiber membrane is a hollow fiber membrane module comprising a knitted fabric containing the hollow fiber membrane, and the knitted fabric has binding yarns on the entire surface thereof.

【0011】[0011]

【実施例】以下、本発明の中空糸膜モジュールにつき図
面を参照しつつより詳細に説明する。
The hollow fiber membrane module of the present invention will be described below in more detail with reference to the drawings.

【0012】図1は、本発明の中空糸膜モジュールの一
例を示す斜視図である。本発明の中空糸膜モジュール1
は、基本的には、構造材2と、固定部材3と、中空糸膜
4と、拘束糸条5とを有して構成される。これらに加
え、各種付属部材が付設されてもよい。
FIG. 1 is a perspective view showing an example of the hollow fiber membrane module of the present invention. Hollow fiber membrane module 1 of the present invention
Is basically composed of a structural material 2, a fixing member 3, a hollow fiber membrane 4 and a restraining yarn 5. In addition to these, various accessory members may be attached.

【0013】構造材2は、中空糸膜モジュール全体を支
持する部材として機能し、細長いほぼ矩形の開口部を有
するとともに、その内部に濾液室を有する。その材質と
しては機械的強度および耐久性を有するものであればよ
く、例えばポリカーボネート、ポリスルフォン、ポリプ
ロピレン、アクリル樹脂、ABS樹脂、変成PPE樹
脂、塩化ビニル樹脂等が例示される。
The structural material 2 functions as a member for supporting the entire hollow fiber membrane module, has an elongated and substantially rectangular opening, and has a filtrate chamber therein. Any material may be used as long as it has mechanical strength and durability, and examples thereof include polycarbonate, polysulfone, polypropylene, acrylic resin, ABS resin, modified PPE resin, vinyl chloride resin and the like.

【0014】図1のように、中空糸膜の編織物の両耳部
の位置に中空糸膜の開口を有するタイプの中空糸膜モジ
ュールでは一モジュール当り2個の構造材が使用される
が、一方の耳部の位置にのみ中空糸膜の開口が設けられ
るタイプのモジュールでは1個の構造材が使用される。
なお、濾液取り出し口6が構造材2の一端に配設されて
いる。
As shown in FIG. 1, in a hollow fiber membrane module of the type in which the hollow fiber membrane has openings at both ears of the knitted and woven fabric of the hollow fiber membrane, two structural materials are used per module. In the module of the type in which the opening of the hollow fiber membrane is provided only at the position of one ear, one structural material is used.
A filtrate outlet 6 is provided at one end of the structural material 2.

【0015】構造材2の開口部は、そこに中空糸膜を伴
って充填固定される固定部材の中空糸膜に垂直な断面の
形状が細長いほぼ矩形となるようなものであることが必
要であり、この矩形の短辺の長さが30mm以下となる
ことが好ましく、15mm以下となることが特に好まし
い。すなわち、中空糸膜の編織物が固定部材の紐状の帯
域に固定されることでモジュール内の中空糸膜全体が平
坦なシート状に並び拡げられる。このように、多数本の
中空糸膜をシート状に並び拡げることで、中空糸膜束が
一本の棒状に固着一体化するのが防止される。一方、矩
形の長辺の長さについては特に限定はないが、余り短い
と一つの中空糸膜モジュール内に配設できる中空糸膜の
本数が減少するので好ましくなく、また余り長いと製造
が困難になるので好ましくない。通常、長辺の長さは1
00〜2000mm程度とされる。
The opening of the structural member 2 must be such that the shape of the cross section of the fixing member, which is filled and fixed together with the hollow fiber membrane, in the section perpendicular to the hollow fiber membrane is an elongated rectangular shape. The length of the short side of this rectangle is preferably 30 mm or less, and particularly preferably 15 mm or less. That is, the knitted fabric of the hollow fiber membranes is fixed to the string-shaped zone of the fixing member, so that the entire hollow fiber membranes in the module are spread and arranged in a flat sheet shape. In this way, by arranging and expanding a large number of hollow fiber membranes in a sheet shape, it is possible to prevent the hollow fiber membrane bundle from being fixedly integrated into a single rod shape. On the other hand, the length of the long side of the rectangle is not particularly limited, but if it is too short, it is not preferable because the number of hollow fiber membranes that can be arranged in one hollow fiber membrane module decreases, and if it is too long, manufacturing is difficult. Is not desirable. Normally, the long side length is 1
It is set to about 00 to 2000 mm.

【0016】固定部材3は、構造材2の開口部に充填固
定され、中空糸膜3の各端部を開口状態を保ったまま集
束して固定するとともに、かつこれらの中空糸膜を濾過
膜として機能させるために、被処理水と処理水とを液密
に仕切る部材として機能する。固定部材3は、通常エポ
キシ樹脂、不飽和ポリエステル樹脂、ポリウレタン等の
液状樹脂を硬化させて形成される。
The fixing member 3 is filled and fixed in the openings of the structural material 2, and each end of the hollow fiber membrane 3 is converged and fixed while keeping the open state, and these hollow fiber membranes are also filtered. In order to function as, it functions as a member that liquid-tightly separates the water to be treated from the treated water. The fixing member 3 is usually formed by curing a liquid resin such as epoxy resin, unsaturated polyester resin or polyurethane.

【0017】中空糸膜4としては、種々のものが使用で
き、例えばセルロース系、ポリオレフィン系、ポリビニ
ルアルコール系、PMMA系、ポリスルフォン系等の各
種材料からなるものが使用できるがポリエチレン、ポリ
プロピレン等の強伸度の高い材質のものが好ましい。な
お、濾過膜として使用可能なものであれば、孔径、空孔
率、膜厚、外径等には特に制限はないが、除去対象物や
容積当たりの膜面積の確保および中空糸膜の強度等を考
えると、好ましい例としては、孔径0.01〜1μm、
空孔率20〜90%、膜厚5〜300μm、外径20〜
2000μmの範囲を挙げることができる。また、バク
テリアの除去を目的とする場合の孔径は0.2μm以下
であることが必須となり、有機物やウイルスの除去を目
的とする場合には分画分子量数万から数十万の限外濾過
膜を用いる場合もある。
As the hollow fiber membrane 4, various types can be used, for example, various types of materials such as cellulose type, polyolefin type, polyvinyl alcohol type, PMMA type and polysulfone type can be used, but polyethylene, polypropylene and the like can be used. A material having a high strength and elongation is preferable. There are no particular restrictions on the pore size, porosity, film thickness, outer diameter, etc., as long as it can be used as a filtration membrane, but it is necessary to secure the membrane area per removal object or volume and the strength of the hollow fiber membrane. Considering the above, as a preferable example, the pore diameter is 0.01 to 1 μm,
Porosity 20-90%, film thickness 5-300 μm, outer diameter 20-
A range of 2000 μm can be mentioned. In addition, it is essential that the pore size is 0.2 μm or less for the purpose of removing bacteria, and the ultrafiltration membrane having a molecular weight cut-off of tens of thousands to hundreds of thousands for the purpose of removing organic substances and viruses. May be used.

【0018】中空糸膜の表面特性としては、表面に親水
基等を持ついわゆる恒久親水化膜であることが望まし
い。恒久親水化膜の製法としては、ポリビニルアルコー
ルのような親水性高分子で中空糸膜を製造する方法、ま
たは疎水性高分子膜の表面を親水化する方法等公知の方
法が使用できる。例えば親水性高分子を膜面に付与し疎
水性中空糸膜を親水化する際の親水性高分子の例として
は、エチレン−酢酸ビニル系共重合体ケン化物、ポリビ
ニルピロリドン等を挙げることができる。別の手法によ
る膜面親水化の例としては、親水性モノマーの膜面重合
方式があり、このモノマーの例としてはジアセトンアク
リルアマイド等を挙げることができる。また、他の手法
としては疎水性高分子(例えばポリオレフイン)に親水
性高分子をブレンドして紡糸製膜する手法を挙げること
ができ、使用する親水性高分子の例としては上述したも
のが挙げられる。表面が疎水性の中空糸膜であると、被
処理水中の有機物と中空糸膜表面との間に疎水性相互作
用が働き膜面ヘの有機物吸着が発生し、それが膜面閉塞
につながり濾過寿命が短くなる。また、吸着由来の目詰
まりは膜面洗浄による濾過性能回復も一般には難しい。
恒久親水化膜を用いることにより有機物と中空糸膜表面
との疎水性相互作用を減少させることができ、有機物の
吸着を抑えることができる。さらに疎水性膜ではスクラ
ビングの際に気泡によって膜面が乾燥状態となることが
あり、これにより疎水性が強まりフラックスの低下を招
くことがあるが、恒久親水化膜では乾燥してもフラック
スの低下が生じない。
As a surface property of the hollow fiber membrane, a so-called permanent hydrophilization membrane having a hydrophilic group on the surface is desirable. As a method for producing the permanently hydrophilic film, a known method such as a method for producing a hollow fiber membrane with a hydrophilic polymer such as polyvinyl alcohol or a method for hydrophilizing the surface of a hydrophobic polymer membrane can be used. For example, as an example of the hydrophilic polymer when the hydrophilic polymer is applied to the membrane surface to make the hydrophobic hollow fiber membrane hydrophilic, saponified ethylene-vinyl acetate copolymer, polyvinylpyrrolidone and the like can be mentioned. . An example of hydrophilization of the film surface by another method is a film surface polymerization method of a hydrophilic monomer, and examples of this monomer include diacetone acrylate. Further, as another method, a method of blending a hydrophobic polymer (for example, polyolefin) with a hydrophilic polymer to form a film by spinning can be cited. Examples of the hydrophilic polymer to be used include those mentioned above. To be If the surface is a hydrophobic hollow fiber membrane, hydrophobic interaction between organic matter in the water to be treated and the surface of the hollow fiber membrane causes adsorption of organic matter on the membrane surface, which leads to blockage of the membrane surface and filtration. The life is shortened. In addition, clogging caused by adsorption is generally difficult to recover filtration performance by washing the membrane surface.
By using the permanent hydrophilization membrane, the hydrophobic interaction between the organic matter and the hollow fiber membrane surface can be reduced, and the adsorption of the organic matter can be suppressed. In addition, when scrubbing, the surface of a hydrophobic film may become dry due to bubbles, which may increase the hydrophobicity and cause a decrease in flux. Does not occur.

【0019】中空糸膜4を、構造材2の細長いほぼ矩形
の開口部に中空糸膜をシート状に並べて収納して中空糸
膜モジュールを作製するには、中空糸膜を編織物とした
ものを使用すると作業性が良好であることが前述した特
開平5−220356号公報等に開示されている。この
中空糸膜の編織物としては、従来は主にその耳部に相当
する位置に拘束糸条(緯糸である中空糸膜に対して編物
または織物の経糸を指称する)が配され、編織物の中央
には殆ど拘束糸条がないかあっても極めて粗く配された
ものが使用されてきた。しかし、本発明で用いる中空糸
膜を含む編織物はその全面において拘束糸条を有するも
のである。これは、拘束糸条を用いて各中空糸膜相互間
の位置を固定して一本一本の中空糸膜の移動自由度を制
限し強制的にシート状態を維持させたほうが意外にも中
空糸膜間に濁質が堆積しにくいことが見い出されたこと
に基づくものである。
In order to manufacture the hollow fiber membrane module by arranging the hollow fiber membranes 4 in a sheet-like manner in the elongated rectangular openings of the structural material 2 to form a hollow fiber membrane module, the hollow fiber membranes are knitted fabrics. It is disclosed in JP-A-5-220356, etc. that the workability is good when the above is used. As a knitted fabric of this hollow fiber membrane, conventionally, a restraining yarn (a knitted fabric or a warp of a fabric is referred to for a hollow fiber membrane which is a weft yarn) is arranged mainly at a position corresponding to an ear portion of the knitted fabric. Even if there are almost no binding yarns in the center of the, the ones that have been arranged extremely coarsely have been used. However, the knitted fabric containing the hollow fiber membrane used in the present invention has a binding yarn on its entire surface. It is unexpectedly better to fix the positions of the hollow fiber membranes with the restraining yarns to limit the freedom of movement of each hollow fiber membrane and forcibly maintain the sheet state. It is based on the finding that turbidity is less likely to accumulate between the filaments.

【0020】すなわち、本発明で用いる中空糸膜を含む
編織物は、編織物の全面において拘束糸条が互いに平行
に、ほぼ等間隔で密に配されてなるものである。より具
体的には、各拘束糸条は30mm以下の間隔、好ましく
は10mm以下の間隔で中空糸膜の編織物の全面に配さ
れている必要がある。
That is, the knitted fabric containing the hollow fiber membrane used in the present invention is one in which the constraining yarns are arranged parallel to each other and densely arranged at substantially equal intervals on the entire surface of the knitted fabric. More specifically, the respective restraining yarns need to be arranged on the entire surface of the knitted fabric of the hollow fiber membrane at intervals of 30 mm or less, preferably 10 mm or less.

【0021】図2は、中空糸膜の編織物の部分拡大図で
あり、中空糸膜4が拘束糸条5によって鎖編み状に拘束
された状態を示している。図2においては、モデル的に
1本の中空糸膜4を鎖編み状に拘束した状態を示してい
るが、もちろん緯糸に何本かを集束した中空糸膜を用い
ても差し支えないし、拘束糸条は織物の経糸であっても
差支えない。拘束糸条5を構成する繊維としては、ポリ
エステル繊維等の耐水性を有する合成繊維製のマルチフ
ィラメント糸や紡績糸等が用いられる。なかでも、マル
チフィラメント糸は濁質が付着しにくいので好ましい。
FIG. 2 is a partially enlarged view of the knitted and woven fabric of the hollow fiber membrane, and shows the state in which the hollow fiber membrane 4 is constrained by the constraining yarn 5 in a chain knitting shape. Although FIG. 2 shows a model in which one hollow fiber membrane 4 is constrained in a chain-knitted shape, it is of course possible to use a hollow fiber membrane in which several wefts are bundled together as a weft thread. The threads may be woven warp threads. As the fibers forming the restraint yarn 5, multifilament yarns or spun yarns made of synthetic fibers having water resistance such as polyester fibers are used. Among them, the multifilament yarn is preferable because turbidity does not easily adhere to it.

【0022】拘束糸条を編織物の全面に密に配したこと
により、拘束糸条に濁質が付着し、そこに雑菌の繁殖が
生じやすくなることもあるので、それを防止する観点か
らは拘束糸条が抗菌性を有していることが好ましい。拘
束糸条に抗菌性を付与するには、拘束糸条を構成してい
る糸条の一部もしくは全部に抗菌性繊維を用いればよ
い。抗菌性繊維は、繊維製造時に抗菌剤を含有させる等
繊維自体が抗菌性を有したものでもよいし、製造された
合成繊維等に抗菌剤を塗布あるいは含浸させたものでも
よい。抗菌剤としては、銀を担持させた抗菌性ゼオライ
トや金属フタロシアニン化合物、第4級アンモニウム
塩、銅化合物等を挙げることができる。
Since the restraint yarns are densely arranged on the entire surface of the knitted fabric, turbidity may adhere to the restraint yarns, and various bacteria may easily grow there, so from the viewpoint of preventing it. The binding yarn preferably has antibacterial properties. In order to impart the antibacterial property to the restraining yarn, the antibacterial fiber may be used for a part or all of the yarn constituting the restraining yarn. The antibacterial fiber may be one in which the fiber itself has antibacterial properties such as containing an antibacterial agent at the time of fiber production, or may be a manufactured synthetic fiber or the like coated or impregnated with an antibacterial agent. Examples of the antibacterial agent include silver-supported antibacterial zeolite, metal phthalocyanine compounds, quaternary ammonium salts, and copper compounds.

【0023】中空糸膜の編織物の製法としては、任意の
手法が用いられるが、例えば特公平4−26886号公
報や特開昭63−91673号公報に記載されている装
置や方法を用いると容易である。
Any method can be used as a method for producing the knitted and woven fabric of the hollow fiber membrane. For example, when the apparatus and method described in JP-B-4-26886 and JP-A-63-91673 are used. It's easy.

【0024】本発明の中空糸膜モジュールは、密閉容器
内に配設して被処理水を加圧して中空糸膜を透過させる
いわゆる加圧濾過法にも使用できるが、活性汚濁槽や沈
澱槽等に配設し、中空糸膜を透過した処理水を回収する
サイドを吸引する吸引濾過法で使用することが好まし
い。また、吸引濾過法を採用し、スクラビングによる膜
面洗浄と膜面と平行方向の水流を生じさせながらの濾過
を行うと本中空糸膜モジュールの有機物推積が生じにく
い性能がより効果的に発揮される。特に複数の中空糸膜
モジュールを各中空糸膜の編織物が平行になるように配
設し、この吸引濾過法を採用すると極めて効果的であ
る。更に、周期的に一時吸引を停止する、いわゆる間欠
吸引運転方法を採用することも有効である。
The hollow fiber membrane module of the present invention can be used in a so-called pressure filtration method in which a hollow fiber membrane is placed by placing it in a closed container and pressurizing water to be treated to permeate the hollow fiber membrane. It is preferably used in a suction filtration method in which the side for collecting the treated water that has permeated the hollow fiber membrane is suctioned. In addition, if the suction filtration method is adopted and the membrane surface is cleaned by scrubbing and filtration is performed while generating a water flow in the direction parallel to the membrane surface, the performance of the hollow fiber membrane module in which organic matter buildup is less likely to occur is more effectively exhibited. To be done. In particular, it is extremely effective to arrange a plurality of hollow fiber membrane modules so that the knitted fabrics of the hollow fiber membranes are parallel to each other and adopt this suction filtration method. Furthermore, it is also effective to employ a so-called intermittent suction operation method in which temporary suction is periodically stopped.

【0025】本発明の中空糸膜モジュールは、特に高汚
濁性水の濾過に適しており、具体的な利用分野として
は、河川水の濾過、工業用水濾過、下水の固液分離、排
水処理(例えば合併浄化槽での処理)等が挙げられる。
The hollow fiber membrane module of the present invention is particularly suitable for filtering highly polluted water, and specific fields of application include river water filtration, industrial water filtration, sewage solid-liquid separation, and wastewater treatment ( For example, treatment in a combined septic tank) and the like.

【0026】[0026]

【発明の効果】本発明の中空糸膜モジュールでは、多数
本の中空糸膜がシート状に並び拡げられているので、中
空糸膜間への有機物の堆積が生じにくく、中空糸膜の固
着一体化が防止される。特に拘束糸条が密に配され中空
糸膜相互間の位置も固定されたことにより、有機物の堆
積が極めて生じにくくなった。そのため、高汚濁性水の
濾過において長期に亙って差圧の上昇及び流量低下が防
止できる。
EFFECTS OF THE INVENTION In the hollow fiber membrane module of the present invention, a large number of hollow fiber membranes are arranged and expanded in a sheet form, so that organic substances are unlikely to deposit between the hollow fiber membranes and the hollow fiber membranes are fixedly integrated. Is prevented. In particular, since the binding yarns were densely arranged and the positions of the hollow fiber membranes were fixed, the deposition of organic substances became extremely difficult. Therefore, in the filtration of highly polluted water, it is possible to prevent an increase in differential pressure and a decrease in flow rate over a long period of time.

【0027】また、拘束糸条に抗菌性繊維を使用する
と、拘束糸条に濁質が付着してそこで雑菌が繁殖するの
を防止する効果も発揮され、中空糸膜モジュールの機能
低下がより生じにくくなる。
In addition, when the antibacterial fiber is used for the restraining yarn, the effect of preventing turbidity from adhering to the restraining yarn and propagating various bacteria there is also exerted, and the function of the hollow fiber membrane module is further deteriorated. It gets harder.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の中空糸膜モジュールの一例を示す斜視
図である。
FIG. 1 is a perspective view showing an example of a hollow fiber membrane module of the present invention.

【図2】本発明に用いる中空糸膜の編織物の一例を示す
部分拡大図である。
FIG. 2 is a partially enlarged view showing an example of a knitted fabric of a hollow fiber membrane used in the present invention.

【符号の説明】[Explanation of symbols]

1 中空糸膜モジュール 2 構造材 3 固定部材 4 中空糸膜 5 拘束糸条 6 濾液取り出し口 w 拘束糸条の間隔 1 Hollow Fiber Membrane Module 2 Structural Material 3 Fixing Member 4 Hollow Fiber Membrane 5 Restraining Thread 6 Filtrate Extraction Port w Interval Between Resting Threads

───────────────────────────────────────────────────── フロントページの続き (72)発明者 小林 真澄 愛知県名古屋市東区砂田橋四丁目1番60号 三菱レイヨン株式会社商品開発研究所内 (72)発明者 亘 謙治 愛知県名古屋市東区砂田橋四丁目1番60号 三菱レイヨン株式会社商品開発研究所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masumi Kobayashi, Masazumi Kobayashi 4-chome, 1-chome, Sunadabashi, Higashi-ku, Nagoya, Aichi Mitsubishi Rayon Co., Ltd. Product Development Laboratory (72) Kenji Wataru, 4-chome, Sunadabashi, Higashi-ku, Aichi, Nagoya No. 60 Mitsubishi Rayon Co., Ltd. Product Development Laboratory

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 中空糸膜と、中空糸膜の端部を開口状態
を保ちつつこれを固定する固定部材と、固定部材を支持
収納する構造材とを有してなり、固定部材の中空糸膜に
垂直な断面の形状が細長いほぼ矩形である中空糸膜モジ
ュールにおいて、該中空糸膜が中空糸膜を含む編織物か
らなり、該編織物はその全面において拘束糸条を有する
ものである中空糸膜モジュール。
1. A hollow fiber of a fixing member, comprising a hollow fiber membrane, a fixing member for fixing the hollow fiber membrane while keeping an end of the hollow fiber membrane open, and a structural member for supporting and housing the fixing member. In a hollow fiber membrane module whose cross section perpendicular to the membrane is elongated and substantially rectangular, the hollow fiber membrane is composed of a knitted fabric containing the hollow fiber membrane, and the knitted fabric has binding yarns on its entire surface. Thread film module.
【請求項2】 拘束糸条が抗菌性繊維を含むものである
請求項1記載の中空糸膜モジュール。
2. The hollow fiber membrane module according to claim 1, wherein the binding yarn contains antibacterial fibers.
JP7315594A 1994-04-12 1994-04-12 Hollow yarn membrane module Pending JPH07275666A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7315594A JPH07275666A (en) 1994-04-12 1994-04-12 Hollow yarn membrane module

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7315594A JPH07275666A (en) 1994-04-12 1994-04-12 Hollow yarn membrane module

Publications (1)

Publication Number Publication Date
JPH07275666A true JPH07275666A (en) 1995-10-24

Family

ID=13510011

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7315594A Pending JPH07275666A (en) 1994-04-12 1994-04-12 Hollow yarn membrane module

Country Status (1)

Country Link
JP (1) JPH07275666A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007064123A1 (en) * 2005-11-29 2007-06-07 Kolon Industries, Inc A braid-reinforced composite hollow fiber membrane
WO2007064124A1 (en) * 2005-11-29 2007-06-07 Kolon Industries, Inc A braid-reinforced composite hollow fiber membrane
KR100842074B1 (en) * 2007-03-14 2008-06-30 (주)세프라텍 Hollow fiber membrane for feeding mixture into inside hollow fiber
KR100842067B1 (en) * 2007-03-14 2008-06-30 (주)세프라텍 Hollow fiber membrane reinforced with braid
JP2009183847A (en) * 2008-02-05 2009-08-20 Panasonic Electric Works Co Ltd Filtration apparatus

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007064123A1 (en) * 2005-11-29 2007-06-07 Kolon Industries, Inc A braid-reinforced composite hollow fiber membrane
WO2007064124A1 (en) * 2005-11-29 2007-06-07 Kolon Industries, Inc A braid-reinforced composite hollow fiber membrane
AU2006321466B2 (en) * 2005-11-29 2009-11-12 Kolon Industries, Inc. A braid-reinforced composite hollow fiber membrane
US7909177B2 (en) 2005-11-29 2011-03-22 Kolon Industries, Inc. Braid-reinforced composite hollow fiber membrane
US8147938B2 (en) 2005-11-29 2012-04-03 Kolon Industries, Inc. Braid-reinforced composite hollow fiber membrane
KR100842074B1 (en) * 2007-03-14 2008-06-30 (주)세프라텍 Hollow fiber membrane for feeding mixture into inside hollow fiber
KR100842067B1 (en) * 2007-03-14 2008-06-30 (주)세프라텍 Hollow fiber membrane reinforced with braid
JP2009183847A (en) * 2008-02-05 2009-08-20 Panasonic Electric Works Co Ltd Filtration apparatus

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