JPH07136470A - Hollow yarn membrane module and assembly fitted with air diffusing pipe - Google Patents
Hollow yarn membrane module and assembly fitted with air diffusing pipeInfo
- Publication number
- JPH07136470A JPH07136470A JP28353493A JP28353493A JPH07136470A JP H07136470 A JPH07136470 A JP H07136470A JP 28353493 A JP28353493 A JP 28353493A JP 28353493 A JP28353493 A JP 28353493A JP H07136470 A JPH07136470 A JP H07136470A
- Authority
- JP
- Japan
- Prior art keywords
- hollow fiber
- fiber membrane
- module
- membrane module
- air
- 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.)
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Links
Abstract
Description
【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 highly polluted liquid.
【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所謂精
密濾過の分野において多く利用されてきたが、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, high pollution such as secondary treatment and tertiary treatment in sewage treatment plants and solid-liquid separation in septic tanks. Various types of studies have been conducted for use in water treatment applications.
【０００３】このような用途に用いる中空糸膜モジュー
ルは、濾過処理時における中空糸膜の目詰まりが大きい
ために、一定時間濾過処理後、空気を送って中空糸膜を
振動させて膜表面を洗浄したり、濾過処理と逆方向に処
理水を通水するなどの膜面洗浄を繰り返し行っている。
空気を送ることによる膜面洗浄は、モジュールを装着し
た缶体や槽内に散気管或は散気板を取り付け、そこより
水中にバブリングを行うことにより、モジュールの膜面
洗浄を行う方法が多かった。Since the hollow fiber membrane module used for such an application has a large clogging of the hollow fiber membrane during the filtration treatment, after the filtration treatment for a certain period of time, air is sent to vibrate the hollow fiber membrane and the membrane surface is cleaned. The membrane surface is repeatedly washed, for example, by passing treated water in the opposite direction to the filtration treatment.
The most common method for cleaning the membrane surface by sending air is to clean the membrane surface of the module by attaching a diffuser pipe or diffuser plate to the can body or tank in which the module is mounted, and bubbling from there. It was
【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
膜面積が減少し、濾過流量の急激な低下がみられた。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の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、洗浄効率の低下が見られた。Highly polluted water (for example, ss ≧ 5) is obtained by using such a conventional hollow fiber membrane module.
When the filtration treatment (0 ppm, TOC ≧ 100 ppm) is performed, the hollow fiber membranes are fixed (adhered) and integrated with each other through the deposits such as organic substances attached to the surface of the hollow fiber membranes during 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. Further, even when the hollow fiber membrane module in which the hollow fiber membranes are fixed and integrated in this manner is subjected to regular membrane surface cleaning or backwashing, it is not easy to recover the function of the module once fixed and integrated. A decrease in cleaning efficiency was seen.
【０００５】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、中空糸膜をシート状に
配置し、中空糸膜の片端部若しくは両端部が、一つ或は
異なる二つのハウジング内の固定部材でそれぞれ開口状
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）。As a solution to this problem, instead of a concentrating and cylindrical hollow fiber membrane module, the hollow fiber membranes are arranged in a sheet shape, and one end or both ends of the hollow fiber membrane are one or different. A hollow fiber membrane module which is fixed by two fixing members in two housings while maintaining their respective open states, wherein the shape of a cross section of the fixing member perpendicular to the hollow fiber membrane is an elongated rectangular shape. Has been proposed (Japanese Patent Laid-Open No. 5-220356).
【０００６】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, the hollow fiber membranes can be evenly arranged in the inner and outer layers with a space between layers, and the surface of the hollow fiber membranes can be cleaned during membrane surface cleaning. 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.
【０００７】このようなモジュールの膜面洗浄は主にエ
アーによるスクラビング洗浄が用いられる。このとき、
上記のような平型の中空糸膜モジュール及びこれまでの
円筒形のモジュールにおいても缶体或は膜浸漬槽内に散
気管或は散気板を設置し、そのエアーバブリングがモジ
ュール全体に均等に当たるようにモジュールを缶体内或
は槽内に装着、支持する方式を採用してきた。Cleaning of the film surface of such a module is mainly performed by scrubbing cleaning with air. At this time,
Even in the flat hollow fiber membrane module and the conventional cylindrical module as described above, an air diffuser or an air diffuser is installed in the can body or the membrane immersion tank, and the air bubbling thereof evenly covers the entire module. As described above, a method of mounting and supporting the module in the can body or the tank has been adopted.
【０００８】然乍、この方式の場合、モジュールを支
持、固定するとき、モジュール全体に均等にエアーバブ
ルが当たるように配置するのは煩雑な作業である。特
に、複数の平型中空糸膜モジュールを装着する場合など
は、全てのモジュールに対して均等にエアーを当てる必
要があり、さらに難しい作業となる。また、最初に、モ
ジュールの配置を適切に行ったとしても、運転中にモジ
ュール或は散気管が僅かに移動したり、散気管の場所に
よってエアーの流量が異なってくるなどの理由により各
モジュール及びモジュール各部でスクラビング洗浄効率
が異なってくる問題点がある。However, in the case of this system, when the module is supported and fixed, it is a complicated work to arrange the module so that the air bubbles are uniformly applied to the entire module. In particular, when mounting a plurality of flat hollow fiber membrane modules, it is necessary to apply air evenly to all the modules, which is a more difficult task. In addition, even if the modules are properly arranged at the beginning, each module or the diffuser tube may move slightly during operation, or the air flow rate may vary depending on the location of the diffuser tube. There is a problem that the scrubbing cleaning efficiency is different in each part of the module.
【０００９】さらに、複数枚のシート状中空糸膜編織物
を用いた平型中空糸膜モジュールに於て、槽内でシート
面を垂直に、かつ中空糸の長手方向を水平にしてモジュ
ールを固定して運転する場合は、中空糸膜の編地と編地
の間にエアーバブルを通過させ、編地間の中空糸同士の
固着や濁質の堆積を防ぐことが重要であり、全てのモジ
ュールの編地間へエアーバブルを通過させるように槽内
の散気管とモジュールをそれぞれ配置するのは極めて困
難であるという問題もある。本発明は、高汚濁性水の濾
過に使用しても、使用により低下した濾過機能の回復処
理が容易に、且つ効率良く実施できる中空糸膜モジュー
ルを提供することを目的とする。Further, in a flat type hollow fiber membrane module using a plurality of sheet-shaped hollow fiber membrane knitted fabrics, the module is fixed in a tank with the sheet surface vertical and the hollow fiber longitudinal direction horizontal. When operating as a unit, it is important to pass air bubbles between the knitted fabrics of the hollow fiber membranes to prevent the hollow fibers from sticking to each other between the knitted fabrics and to prevent the accumulation of suspended matter. Another problem is that it is extremely difficult to arrange the air diffuser and the module in the tank so that the air bubbles pass between the knitted fabrics. It is an object of the present invention to provide a hollow fiber membrane module that can be used for the filtration of highly polluted water to easily and efficiently carry out the recovery treatment of the filtration function that has deteriorated due to the use.
【００１０】[0010]
【課題を解決するための手段】本発明の要旨は以下の通
りである。 （１）中空糸膜の片端部若しくは両端部が一つ或は異な
る二つのハウジング内の固定部材でそれぞれ開口状態を
保ちつつ固定されてなる中空糸膜モジュールであって、
散気管がモジュールに固定され一体化していることを特
徴とする中空糸膜モジュール。The gist of the present invention is as follows. (1) A hollow fiber membrane module in which one end or both ends of the hollow fiber membrane are fixed by one or two fixing members in two different housings while maintaining open states, respectively.
A hollow fiber membrane module in which an air diffuser is fixed and integrated with the module.
【００１１】（２）シート状中空糸膜編織物で構成さ
れ、中空糸膜の片端部若しくは両端部が一つ或は異なる
二つのハウジング内の固定部材で開口状態を保ちつつ固
定され、固定部材の中空糸膜に垂直な断面の形状がいず
れもほぼ矩形である中空糸膜モジュールで、中空糸膜の
糸長方向と平行に散気管を有することを特徴とする
（１）記載の中空糸膜モジュール。(2) A hollow fiber membrane knitted fabric in sheet form, wherein one end or both ends of the hollow fiber membrane are fixed by one or two different fixing members in two housings while maintaining an open state. In the hollow fiber membrane module, each of which has a substantially rectangular cross section perpendicular to the hollow fiber membrane, the hollow fiber membrane has an air diffuser in parallel with the length direction of the hollow fiber membrane. module.
【００１２】（３）シート状中空糸膜編織物で構成さ
れ、中空糸膜の片端部若しくは両端部が一つ或は異なる
二つのハウジング内の固定部材で開口状態を保ちつつ固
定され、固定部材の中空糸膜に垂直な断面の形状がいず
れもほぼ矩形である中空糸膜モジュールで、それぞれ集
水管あるいは中空糸集束端部で固定された２本の散気管
を有し、それぞれの散気管の長さが有効中空糸長のほぼ
１／２であり、散気管の先端部が閉じてあり、且つ散気
管の固定部から先端部に向かってモジュールの外側方向
へ散気管が傾斜をつけて配されていることを特徴とする
（２）記載の中空糸膜モジュール。(3) A hollow fiber membrane knitted fabric in the form of a sheet, and one or both ends of the hollow fiber membrane are fixed by fixing members in one or two different housings while maintaining an open state. The hollow fiber membrane module has a substantially rectangular cross section perpendicular to the hollow fiber membrane, and has two water diffuser tubes fixed at the water collecting tube or the hollow fiber focusing end, respectively. The length is about 1/2 of the effective hollow fiber length, the tip of the air diffusing tube is closed, and the air diffusing tube is arranged with an inclination toward the outer side of the module from the fixed part of the air diffusing tube toward the tip. The hollow fiber membrane module according to (2), characterized in that
【００１３】（４）シート状中空糸膜編織物で構成され
る平型の中空糸膜モジュールが複数個配設されてなり、
シート状の各中空糸膜がそれぞれほぼ平行に位置するよ
うに中空糸膜モジュールの構造材が濾液を導く導水管に
接続されてなる中空糸膜モジュール組立体に於て、中空
糸膜の糸長方向と平行に散気管が配設されていることを
特徴とする中空糸膜モジュール組立体。(4) A plurality of flat-type hollow fiber membrane modules composed of sheet-shaped hollow fiber membrane knitted fabrics are arranged,
In the hollow fiber membrane module assembly in which the structural material of the hollow fiber membrane module is connected to the water conduit for guiding the filtrate so that the sheet-shaped hollow fiber membranes are positioned substantially parallel to each other, the fiber length of the hollow fiber membrane is A hollow fiber membrane module assembly in which air diffusers are arranged parallel to the direction.
【００１４】（５）シート状中空糸膜編織物で構成され
る平型の中空糸膜モジュールが複数個配設されてなり、
シート状の各中空糸膜がそれぞれほぼ平行に位置するよ
うに中空糸膜モジュールの構造材が濾液を導く導水管に
接続されてなる中空糸膜モジュール組立体に於て、中空
糸膜の糸長方向に対して垂直方向に散気管が配設されて
いることを特徴とする中空糸膜モジュール組立体。(5) A plurality of flat type hollow fiber membrane modules composed of sheet-shaped hollow fiber membrane knitted fabrics are arranged,
In the hollow fiber membrane module assembly in which the structural material of the hollow fiber membrane module is connected to the water conduit for guiding the filtrate so that the sheet-shaped hollow fiber membranes are positioned substantially parallel to each other, the fiber length of the hollow fiber membrane is A hollow fiber membrane module assembly in which air diffusers are arranged in a direction perpendicular to the direction.
【００１５】以下に本発明を図面に従い詳細に説明す
る。図１、図２は、本発明の中空糸膜モジュールの一例
を示した外観図であり、図１は、円筒形のモジュール
で、中空糸膜の長手方向とほぼ平行に散気管を配置した
モジュールの側面図である。図２は、円筒形のモジュー
ルの一つの中空糸膜集束端部のハウジングの外周にリン
グ状の散気管が固定してあるモジュールの斜視図であ
る。The present invention will be described in detail below with reference to the drawings. 1 and 2 are external views showing an example of the hollow fiber membrane module of the present invention. FIG. 1 is a cylindrical module in which air diffusers are arranged substantially parallel to the longitudinal direction of the hollow fiber membrane. FIG. FIG. 2 is a perspective view of a module in which a ring-shaped air diffusing tube is fixed to the outer periphery of the housing at one end of the hollow fiber membrane focusing end of the cylindrical module.
【００１６】図３はシート状中空糸膜編織物を用いた平
型の中空糸膜モジュールで、シート面を垂直にし、且つ
中空糸の長手方向を水平に固定した中空糸膜編織物の真
下に散気管を取り付け中空糸膜の長手方向と平行に配設
したモジュールの斜視図である。FIG. 3 shows a flat type hollow fiber membrane module using a sheet-shaped hollow fiber membrane knitted fabric, which is directly below a hollow fiber membrane knitted fabric in which the sheet surface is vertical and the longitudinal direction of the hollow fibers is fixed horizontally. It is a perspective view of the module which attached the air diffuser and was arrange | positioned in parallel with the longitudinal direction of the hollow fiber membrane.
【００１７】図４は、平型の中空糸膜モジュールで、図
３と同様の中空糸膜の固定を行い、中空糸膜編織物の真
下に散気管を設けてあるが、先端部を閉じた散気管を二
本用い、それぞれの散気管は集水管で固定され、且つ散
気管の先端部が下方に傾斜が施されている散気管を有す
るモジュールである。FIG. 4 shows a flat type hollow fiber membrane module in which the hollow fiber membrane is fixed in the same manner as in FIG. 3 and an air diffusing tube is provided directly under the hollow fiber membrane knitted fabric, but the tip portion is closed. The module has two air diffusers, each of which is fixed by a water collecting pipe, and the tip of the air diffuser is inclined downward.
【００１８】図５はシート状中空糸膜モジュール組立体
の下部に中空糸の糸長方向に対して垂直に散気管を配設
した中空糸膜モジュール組立体の斜視図である。１は中
空糸膜、２はハウジング、３は導水管、４は散気管、
５，５′は散気管を固定する取り付け治具、６はシート
状中空糸膜、７は集水管、８，８′，８″はマニホール
ド、９は散気管固定部、１０は濾液取り出し口、１１は
エアー流入口をそれぞれ示している。FIG. 5 is a perspective view of a hollow fiber membrane module assembly in which an air diffusing tube is arranged below the sheet-shaped hollow fiber membrane module assembly in a direction perpendicular to the length direction of the hollow fiber. 1 is a hollow fiber membrane, 2 is a housing, 3 is a water conduit, 4 is an air diffuser,
5, 5'is a fixture for fixing the diffuser pipe, 6 is a sheet-shaped hollow fiber membrane, 7 is a water collecting pipe, 8, 8 ', 8 "is a manifold, 9 is a diffuser pipe fixing part, 10 is a filtrate outlet, Reference numerals 11 respectively indicate air inlets.
【００１９】中空糸膜１，６は、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、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、特には
ポリエチレン、ポリプロピレンなど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及び中
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５〜３０
０μｍ、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。The hollow fiber membranes 1 and 6 are made of, for example, a cellulosic material,
Materials made of various materials such as polyolefin-based, polyvinyl alcohol-based, and polysulfone-based materials can be used, and materials having high strength and elongation such as polyethylene and polypropylene are particularly 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, the porosity is 20 to 90%, and the film thickness is 5 to 30.
A range of 0 μm and an outer diameter of 20 to 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.
【００２０】中空糸膜の表面特性としては表面に親水性
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
ル系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など公知
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鹸化物、ポリ
ビニルピロリドン等を挙げることができる。As a surface characteristic 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 a permanently hydrophilic membrane, a method for producing a hollow fiber membrane using a hydrophilic polymer such as polyvinyl alcohol,
Alternatively, a known method such as a method of hydrophilizing the surface of the hydrophobic polymer film can be used. For example, as an example of the hydrophilic polymer when the hydrophilic polymer is applied to the membrane surface to hydrophilize the hydrophobic hollow fiber membrane, an ethylene-vinyl acetate copolymer saponified product, polyvinylpyrrolidone and the like can be mentioned. .
【００２１】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ミ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
ポリオレフィン）に親水性高分子をブレンドして紡糸製
膜する方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。As an example of hydrophilization of the membrane surface by another method,
There is a film surface polymerization method for hydrophilic monomers, and examples of this monomer include diacetone acrylamide. 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, and examples of the hydrophilic polymer to be used include those mentioned above. To be
【００２２】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
働き膜面へ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、疎水性膜では使用中のスク
ラビング洗浄において、そのバブリングエアーによって
乾燥、疎水化が生じ、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を
招くことがない。When the surface of the hollow fiber membrane is hydrophobic, hydrophobic interaction between the organic matter in the water to be treated and the surface of the hollow fiber membrane causes adsorption of the organic matter on the membrane surface, which results in clogging of the membrane surface. Leading to shorter filtration life. In addition, clogging caused by adsorption is generally difficult to recover filtration performance by washing the membrane surface. The use of the permanently hydrophilized membrane can reduce the hydrophobic interaction between the organic substance and the surface of the hollow fiber membrane and suppress the adsorption of the organic substance. Furthermore, in the scrubbing cleaning during use, a hydrophobic film may be dried and hydrophobized by the bubbling air, which may cause a decrease in flux, but a permanently hydrophilic film may cause a decrease in flux even when dried. Absent.
【００２３】ハウジング２は、樹脂固定してある中空糸
膜集束端部を固定する部材として機能し、散気管を固
定、支持する部材でもある。また、中空糸集束端面より
得られる濾液を集め、導水管３に通じている。導水管３
は、濾液が流れるパイプである。散気管４は、中空糸の
膜面洗浄を行うために、水中でエアーバブリングを行う
ためのものであり、パイプに孔を開けたものを用いる。
孔の径、ピッチには特に制限はないが、モジュールの大
きさ、バブリングの効率を考慮すると、パイプ径は８〜
３０ｍｍ、孔の径は２〜５ｍｍ、ピッチは３０〜２００
ｍｍの範囲が好ましい。The housing 2 functions as a member for fixing the hollow fiber membrane converging end fixed to the resin, and is also a member for fixing and supporting the air diffusing tube. Further, the filtrate obtained from the end face of the hollow fiber collecting end is collected and communicated with the water conduit 3. Water conduit 3
Is a pipe through which the filtrate flows. The air diffuser 4 is used for air bubbling in water to wash the hollow fiber membrane surface, and a pipe having a hole is used.
The diameter and pitch of the holes are not particularly limited, but considering the module size and bubbling efficiency, the pipe diameter is 8 to
30 mm, hole diameter 2-5 mm, pitch 30-200
The range of mm is preferred.
【００２４】ハウジング２、導水管３、並びに散気管４
の材質としては、機械的強度及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、変性
ＰＰＯ樹脂、ポリ塩化ビニル樹脂などが挙げられる。ま
た、ステンレス等の腐食し難い金属を用いることもでき
る。散気管を固定する取り付け治具５，５′は、散気管
が固定できるものであればどんな物でもよく、ステンレ
ス製、樹脂製など材質も腐食されにくい物であれば構わ
ない。Housing 2, water conduit 3, and air diffuser 4
The material may be any one having mechanical strength and durability, and examples thereof include polycarbonate, polysulfone, polypropylene, acrylic resin, ABS resin, modified PPO resin, polyvinyl chloride resin and the like. Alternatively, a metal such as stainless steel which is not easily corroded can be used. The attachment jigs 5 and 5 ′ for fixing the air diffuser may be of any type as long as the air diffuser can be fixed, and may be made of stainless steel, resin, or the like, which is resistant to corrosion.
【００２５】シート状中空糸膜６は、中空糸膜をシート
状に編んだ物であり、シート状中空糸膜の製法としては
任意の手法が用いられ、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。The sheet-shaped hollow fiber membrane 6 is a sheet-shaped knitted hollow fiber membrane, and any method can be used as a method for producing the sheet-shaped hollow fiber membrane. For example, Japanese Patent Publication No. 26868/1992.
It is easy to use the apparatus and method described in Japanese Patent Laid-Open No. 63-91673.
【００２６】集水管７は平型の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。この集水管７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をしたものである。なお、集
水管の片側の開口部は濾液の取り出し口に通じ、別の片
側は閉じてあり、散気管固定部９により散気管を固定し
ている。The water collecting pipe 7 functions as a member for supporting the entire flat hollow fiber membrane module, and has an elongated, substantially rectangular opening. The opening of the water collecting pipe 7 has an elongated rectangular shape whose cross section perpendicular to the hollow fiber membrane of the fixing member filled and fixed together with the hollow fiber membrane. The opening on one side of the water collecting pipe is connected to the outlet for the filtrate, and the other side is closed, and the diffusing pipe is fixed by the diffusing pipe fixing portion 9.
【００２７】マニホールド８，８′，８″は、平型の中
空糸膜モジュールの集水管を固定し、複数のモジュール
を並列一体化する際の固定部材である。モジュールの上
方のマニホールド８はそれぞれの集水管から得られた濾
液を集めることができるようにマニホールドの中央を管
が通る構造になっている。下方のマニホールド８′，
８″も複数のモジュールを固定する部材で、集水管を固
定すると同時に集水管の片端を閉じている。また、８′
は散気管を固定する役割もあり、８″は散気管を固定す
ると共にエアーを通じる管が通っている。集水管７、マ
ニホールド８，８′，８″の材質は、前記の散気管など
の材質に準じる。The manifolds 8, 8 ', 8 "are fixing members for fixing the water collecting pipes of the flat hollow fiber membrane module and integrating a plurality of modules in parallel. The manifolds 8 above the modules are respectively arranged. The structure is such that the pipe passes through the center of the manifold so as to collect the filtrate obtained from the water collection pipe of the lower manifold 8 ',
8 ″ is also a member for fixing a plurality of modules, which fixes the water collecting pipe and at the same time closes one end of the water collecting pipe.
Is also used to fix the air diffuser, and 8 ″ is used to fix the air diffuser and through which air passes. The material of the water collecting pipe 7, manifolds 8, 8 ′, 8 ″ is the same as the air diffuser described above. According to the material.
【００２８】図３、図４に於て、集水管７の下側の端は
閉じてあり、散気管４とは通じていない。また、図４の
散気管４は、図面では、曲線を描くように傾斜が施され
ているが、直線状に傾斜していても構わない。図３並び
に図４のモジュールにおいては、複数のモジュールを使
用する場合、シート面が重なるように並列させて使用す
るのが好ましい。In FIGS. 3 and 4, the lower end of the water collecting pipe 7 is closed and is not connected to the air diffusing pipe 4. Further, although the air diffuser 4 in FIG. 4 is inclined so as to draw a curved line in the drawing, it may be linearly inclined. In the case of using a plurality of modules in the modules of FIGS. 3 and 4, it is preferable to use them in parallel so that the sheet surfaces overlap.
【００２９】図５のような中空糸膜モジュール組立体の
場合には、缶体や処理槽をコンパクトにするため、並び
にエアースクラビングを効率よく行うことを考慮すると
隣接するシートの間隔は小さい方が好ましいが、間隔を
狭めすぎるとシート間にエアーバブルが通り難くなるこ
とが考えられる。従って、シート間の間隔は適切な間隔
が要求され、その間隔は５〜６０ｍｍの範囲が適当であ
る。実際にはモジュールの大きさ、シート枚数、エアー
スクラビング等の逆洗条件を考慮してシート間の間隔を
選択することができる。また、図面では散気管４はモジ
ュールの糸長方向に対して垂直に配設してあるが、この
散気管は、糸長方向に平行に配設しても差し支えない。In the case of the hollow fiber membrane module assembly as shown in FIG. 5, in order to make the can body and the treatment tank compact and to efficiently perform the air scrubbing, the interval between the adjacent sheets should be smaller. Although preferable, it is considered that if the interval is too narrow, it becomes difficult for air bubbles to pass between the sheets. Therefore, an appropriate gap is required between the sheets, and the gap is suitably in the range of 5 to 60 mm. Actually, the interval between the sheets can be selected in consideration of the size of the module, the number of sheets, and backwashing conditions such as air scrubbing. Further, in the drawing, the air diffusing tube 4 is arranged perpendicularly to the thread length direction of the module, but this air diffusing tube may be arranged parallel to the thread length direction.
【００３０】本発明の中空糸膜モジュールの使用にあた
っては、モジュールを密閉容器に配設して、被処理水を
加圧して中空糸膜を透過させる所謂加圧濾過方法も採用
できるが、活性汚泥槽や沈澱槽等に中空糸膜モジュール
を配設し、中空糸濾過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。
特に、周期的に所定時間吸引を停止する、所謂間欠吸引
運転方法を採用することにより、膜面堆積物が内部の細
孔へ入り込むのを効率的に防止することができ、中空糸
膜モジュールの機能回復処理頻度を低下させることがで
きる。When the hollow fiber membrane module of the present invention is used, a so-called pressure filtration method in which the module is placed in a closed container and the water to be treated is pressed to permeate the hollow fiber membrane can be used. It is preferable to arrange the hollow fiber membrane module in a tank or a sedimentation tank and use it in a suction filtration method in which the side for collecting the treated water that has permeated the hollow fiber filtration membrane is sucked.
In particular, by adopting a so-called intermittent suction operation method in which suction is periodically stopped for a predetermined time, it is possible to efficiently prevent membrane surface deposits from entering the internal pores, and The frequency of function recovery processing can be reduced.
【００３１】[0031]
【作用】散気管を中空糸膜モジュールと一体化してある
のでモジュール全体に均等にエアースクラビングが行わ
れ洗浄効率が上昇する。缶体あるいは処理槽への装着の
際、散気管とモジュールが一体化していることで、配
置、装着の作業が極めて容易になり、散気管とモジュー
ルの細かい位置関係を設定する必要がなくなる。また、
運転中にモジュールの位置が初期の位置からずれること
があっても、エアースクラビングが適切に行われる。Since the air diffuser is integrated with the hollow fiber membrane module, air scrubbing is uniformly performed on the entire module, and the cleaning efficiency is increased. Since the air diffuser and the module are integrated when the canister or the processing tank is mounted, the work of arrangement and mounting becomes extremely easy, and it is not necessary to set a fine positional relationship between the air diffuser and the module. Also,
Even if the position of the module deviates from the initial position during operation, the air scrubbing is properly performed.
【００３２】平型モジュールの中央部で下方に傾斜が施
されている散気管の場合では、モジュール全体で最も透
過流束の大きいポッティング近傍に主にエアースクラビ
ングがなされることになり、目詰まりをこの部分の目詰
まりを抑えることで高い濾過流量を長時間持続すること
ができる。複数の平型モジュールに散気管を配設したも
のは、装着が非常に容易であり、運転時のエアースクラ
ビングもモジュール全体に効率よく行われるため、大き
い膜面積を要する処理槽に適用可能である。In the case of an air diffuser which is inclined downward at the center of the flat module, air scrubbing is mainly performed in the vicinity of the potting where the permeation flux is the largest in the entire module, which causes clogging. By suppressing the clogging of this portion, a high filtration flow rate can be maintained for a long time. A flat module with air diffusers installed is very easy to install, and air scrubbing during operation is efficiently performed on the entire module, so it can be applied to a treatment tank that requires a large membrane area. .
【００３３】[0033]
【実施例】本発明を実施例により具体的に説明する。 実施例１ 図３に示すような中空糸膜モジュールを作製した。中空
糸膜６は、エチレン−酢酸ビニル共重合体の鹸化物を表
面に保持したポリエチレン製の多孔質中空糸膜であり、
これをシート状に編んで編織物とした。中空糸膜編織物
は糸長方向の長さが７９０ｍｍ、中空糸膜の配列方向の
長さが５００ｍｍのものを２枚用い、それを積層して中
空糸膜編織物の両端部をポリウレタン樹脂で固定した。
なお、中空糸膜６の各端部を開口状態を保ったまま樹脂
固定した。このように両端部を樹脂固定した中空糸膜編
織物をポリ塩化ビニル製のパイプにはめ込んでモジュー
ル化した。EXAMPLES The present invention will be specifically described with reference to examples. Example 1 A hollow fiber membrane module as shown in FIG. 3 was produced. The hollow fiber membrane 6 is a polyethylene porous hollow fiber membrane having a saponified product of an ethylene-vinyl acetate copolymer held on its surface.
This was knitted into a sheet to obtain a knitted woven fabric. Two hollow fiber membrane knitted fabrics having a length in the yarn length direction of 790 mm and a length in the direction of arrangement of the hollow fiber membranes of 500 mm were used, and both were laminated with polyurethane resin at both ends. Fixed
In addition, each end of the hollow fiber membrane 6 was resin-fixed while maintaining the open state. The hollow fiber membrane knitted fabric whose both ends were fixed with resin in this manner was fitted into a pipe made of polyvinyl chloride to form a module.
【００３４】パイプは内径３０ｍｍ、外径３５ｍｍ、長
さ６００ｍｍのものを用い、予め中空糸膜の樹脂固定部
の寸法に合わせて切れ込みを入れてあるものを用いた。
このパイプが集水管７にあたる。それぞれ２本の集水管
で、それぞれ同じ片側の端部は濾液を回収するための導
水管を接続し、もう一方の端部はそれぞれ閉じてあり、
この部分で散気管を固定している。散気管は、ポリ塩化
ビニル製のパイプであり、内径１０ｍｍ、外径１３ｍｍ
のものに、６０ｍｍピッチで直径３ｍｍの孔を開けたパ
イプを用いた。A pipe having an inner diameter of 30 mm, an outer diameter of 35 mm and a length of 600 mm was used, and a pipe having a slit formed in advance according to the dimensions of the resin fixing portion of the hollow fiber membrane was used.
This pipe corresponds to the water collection pipe 7. Each of the two water collection pipes has the same one end connected to a water conduit for collecting the filtrate, and the other end closed.
The air diffuser is fixed at this part. The air diffuser is a polyvinyl chloride pipe with an inner diameter of 10 mm and an outer diameter of 13 mm.
A pipe having holes with a diameter of 3 mm at a pitch of 60 mm was used for the above.
【００３５】このモジュールを２００ｐｐｍの酵母懸濁
水中に浸漬し、導水管とポンプの入り口側を接続して、
モジュールの二次側よりポンプで吸引して濾過を行っ
た。濾過運転中は連続的に３５Ｎｌ／ｍｉｎのエアーを
散気管に送り、エアースクラビングを行った。その結
果、良好なスクラビング洗浄が行われ、０．０１３ｍ3
／ｍ2 ・ｈの定流量濾過において、６ヶ月間膜間差圧は
１０〜２５ｃｍＨｇであり、安定した濾過が行われた。This module was immersed in 200 ppm of yeast suspension water, the water conduit was connected to the inlet side of the pump,
Filtration was performed by suctioning with a pump from the secondary side of the module. During the filtration operation, 35 Nl / min of air was continuously sent to the air diffuser to perform air scrubbing. As a result, good scrubbing cleaning is performed and 0.013 m 3
In the constant flow rate filtration of / m 2 · h, the transmembrane pressure difference was 10 to 25 cmHg for 6 months, and stable filtration was performed.
【００３６】実施例２ 図５に示すような中空糸膜モジュール組立体を作製し
た。実施例１で作製したものと同様に両端部を樹脂固定
した中空糸膜編織物を作製し、これをポリ塩化ビニル製
のパイプにはめ込んでモジュール化した。パイプは内径
３０ｍｍ、外径３５ｍｍ、長さ６００ｍｍのものを用
い、予め中空糸膜の樹脂固定部の寸法に合わせて切れ込
みを入れてあるものを用いた。このパイプが集水管７に
あたる。このような中空糸膜モジュールを４個作製し、
シート面が重なるように並列させた状態で、集水管の端
部をマニホールドでそれぞれ固定し、４個のモジュール
の組立体を作製した。Example 2 A hollow fiber membrane module assembly as shown in FIG. 5 was produced. A hollow fiber membrane knitted fabric having both ends fixed with a resin was produced in the same manner as that produced in Example 1, and this was fitted into a pipe made of polyvinyl chloride to form a module. A pipe having an inner diameter of 30 mm, an outer diameter of 35 mm, and a length of 600 mm was used, and a pipe having a slit formed in advance according to the dimensions of the resin fixing portion of the hollow fiber membrane was used. This pipe corresponds to the water collection pipe 7. Four such hollow fiber membrane modules were produced,
The end portions of the water collection pipes were fixed by manifolds in a state where the sheet surfaces were arranged side by side so as to overlap each other, and an assembly of four modules was produced.
【００３７】図面でマニホールド８はそれぞれの集水管
から得られた濾液を集めることができるようにマニホー
ルド内中央部を管が通る構造になっており、それぞれの
集水管の開口部がその管に通じ濾液を回収できるように
した。一方、下方のマニホールド８′，８″でもそれぞ
れのモジュールを固定し、それと同時に集水管の開口部
を閉じた。また、マニホールド８′，８″で散気管を固
定し、マニホールド８″内部の管を通ってスクラビング
エアーを散気管に供給した。散気管は、ポリ塩化ビニル
製のパイプであり、内径１０ｍｍ、外径１３ｍｍのもの
に、３０ｍｍピッチで直径３ｍｍの孔を開けたパイプを
用いた。パイプの長さは１８０ｍｍで、先端を閉じた。
このパイプを４本、中空糸の糸長方向と垂直に等間隔で
配設した。In the drawing, the manifold 8 has a structure in which the pipes pass through the central part of the manifold so that the filtrate obtained from the respective water collection pipes can be collected, and the openings of the respective water collection pipes communicate with the pipes. The filtrate was ready for recovery. On the other hand, each module was fixed in the lower manifolds 8'and 8 ", and at the same time, the opening of the water collection pipe was closed. In addition, the diffuser pipe was fixed in the manifolds 8'and 8", and the pipes inside the manifold 8 "were fixed. The scrubbing air was supplied to the air diffusing tube through a polyvinyl chloride pipe made of polyvinyl chloride, having an inner diameter of 10 mm and an outer diameter of 13 mm, and having a diameter of 3 mm at a pitch of 30 mm. The length of the pipe was 180 mm and the tip was closed.
Four of these pipes were arranged at equal intervals perpendicular to the length direction of the hollow fiber.
【００３８】このモジュール組立体を２００ｐｐｍの酵
母懸濁水中に浸漬し、モジュールの二次側よりポンプで
吸引して濾過を行った。濾過運転中は連続的に７０Ｎｌ
／ｍｉｎのエアーを散気管に送り、エアースクラビング
を行った。その結果、良好なスクラビング洗浄がモジュ
ール全体になされ、０．０１３ｍ3 ／ｍ2 ・ｈの定流量
濾過において、６ヶ月間膜間差圧は１０〜２５ｃｍＨｇ
であり、安定した濾過が継続できた。This module assembly was immersed in 200 ppm of yeast suspension water, and suctioned with a pump from the secondary side of the module for filtration. 70 Nl continuously during filtration operation
/ Min of air was sent to the air diffuser to perform air scrubbing. As a result, good scrubbing cleaning was performed on the entire module, and transmembrane pressure difference was 10 to 25 cmHg for 6 months in 0.013 m 3 / m 2 · h constant flow rate filtration.
Therefore, stable filtration could be continued.
【００３９】[0039]
【発明の効果】本発明の中空糸膜モジュールは、散気管
とモジュールを一体化してあるので、缶体或は処理槽へ
の装着が容易で、モジュールと散気管の配置が適切に行
われる。従って、モジュール全体に均等なエアースクラ
ビングがなされ、洗浄効率が上昇するため、膜面への目
詰まりが抑制され高い濾過流量が長時間継続する。Since the hollow fiber membrane module of the present invention has the air diffusing tube and the module integrated with each other, it can be easily attached to the can body or the treatment tank, and the module and the air diffusing tube are properly arranged. Accordingly, uniform air scrubbing is performed on the entire module and the cleaning efficiency is increased, so that clogging of the membrane surface is suppressed and a high filtration flow rate continues for a long time.
【図１】本発明の中空糸膜モジュールの一例を示す側面
図である。FIG. 1 is a side view showing an example of a hollow fiber membrane module of the present invention.
【図２】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. 2 is a perspective view showing an example of a hollow fiber membrane module of the present invention.
【図３】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. 3 is a perspective view showing an example of a hollow fiber membrane module of the present invention.
【図４】本発明の中空糸膜モジュール組立体の一例を示
す側面図である。FIG. 4 is a side view showing an example of a hollow fiber membrane module assembly of the present invention.
【図５】本発明の中空糸膜モジュール組立体の一例を示
す斜視図である。FIG. 5 is a perspective view showing an example of a hollow fiber membrane module assembly of the present invention.
１ 中空糸膜 ２ ハウジング ３ 導水管 ４ 散気管 ５，５′ 散気管を固定する治具 ６ シート状中空糸膜 ７ 集水管 ８，８′，８″ マニホールド ９ 散気管固定部 １０ 濾液取り出し口 １１ エアー流入口 1 Hollow Fiber Membrane 2 Housing 3 Water Pipe 4 Diffuser Pipe 5,5 'Jig for Fixing Diffuser 6 Sheet-shaped Hollow Fiber Membrane 7 Water Collection Pipe 8, 8', 8 "Manifold 9 Diffuser Pipe Fixing Part 10 Filtrate Outlet Port 11 Air inlet
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成６年８月２３日[Submission date] August 23, 1994
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２３[Name of item to be corrected] 0023
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００２３】ハウジング２は、樹脂固定してある中空糸
膜集束端部を固定する部材として機能し、散気管を固
定、支持する部材でもある。また、中空糸膜集束端面よ
り得られる濾液を集め、導水管３に通じている。導水管
３は、濾液が流れるパイプである。散気管４は、中空糸
膜の膜面洗浄を行うために、水中でエア−バブリングを
行うためのものであり、パイプに孔を開けたものを用い
る。孔の径、ピッチには特に制限はないが、モジュ−ル
の大きさ、バブリングの効率を考慮すると、パイプ系は
８〜３０ｍｍ、孔の径は０．５〜５ｍｍ，ピッチは３０
〜２００ｍｍの範囲が好ましい。The housing 2 functions as a member for fixing the hollow fiber membrane converging end fixed to the resin, and is also a member for fixing and supporting the air diffusing tube. In addition, the filtrate obtained from the end surface of the hollow fiber membrane converging end is collected and communicated with the water conduit 3. The water conduit 3 is a pipe through which the filtrate flows. The air diffuser 4 is a hollow fiber
It is used to perform air bubbling in water for cleaning the membrane surface of the membrane, and a pipe with holes is used. The hole diameter and pitch are not particularly limited, but considering the size of the module and the bubbling efficiency, the pipe system has a diameter of 8 to 30 mm, the hole diameter has a diameter of 0.5 to 5 mm, and the pitch is 30.
A range of up to 200 mm is preferred.
Claims (5)
或は異なる二つのハウジング内の固定部材でそれぞれ開
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、散気管がモジュールに固定され一体化している
ことを特徴とする中空糸膜モジュール。1. A hollow fiber membrane module in which one end or both ends of a hollow fiber membrane are fixed by one or two fixing members in two different housings while maintaining open states, respectively, wherein an air diffusing tube is a module. A hollow fiber membrane module characterized by being fixed to and integrated with a hollow fiber membrane module.
空糸膜の片端部若しくは両端部が一つ或は異なる二つの
ハウジング内の固定部材で開口状態を保ちつつ固定さ
れ、固定部材の中空糸膜に垂直な断面の形状がいずれも
ほぼ矩形である中空糸膜モジュールで、中空糸膜の糸長
方向と平行に散気管を有することを特徴とする請求項１
記載の中空糸膜モジュール。2. A hollow fiber membrane knitted fabric in sheet form, wherein one end or both ends of the hollow fiber membrane are fixed by one or two different fixing members in two housings while maintaining an open state. A hollow fiber membrane module in which the shape of a cross section perpendicular to the hollow fiber membrane is substantially rectangular, and having an air diffusing tube parallel to the length direction of the hollow fiber membrane.
The hollow fiber membrane module described.
空糸膜の片端部若しくは両端部が一つ或は異なる二つの
ハウジング内の固定部材で開口状態を保ちつつ固定さ
れ、固定部材の中空糸膜に垂直な断面の形状がいずれも
ほぼ矩形である中空糸膜モジュールで、それぞれ集水管
或は中空糸集束端部で固定された２本の散気管を有し、
それぞれの散気管の長さが有効中空糸長のほぼ１／２で
あり、散気管の先端部が閉じてあり、且つ散気管の固定
部から先端部に向かってモジュールの外側方向へ散気管
が傾斜をつけて配されていることを特徴とする請求項２
記載の中空糸膜モジュール。3. A hollow fiber membrane knitted fabric in sheet form, wherein one end or both ends of the hollow fiber membrane are fixed by one or two different fixing members in two housings while maintaining an open state. A hollow fiber membrane module in which the shape of the cross section perpendicular to the hollow fiber membrane is almost rectangular, each having two water diffusers fixed at a water collecting tube or a hollow fiber converging end,
The length of each air diffusing tube is about 1/2 of the effective hollow fiber length, the tip of the air diffusing tube is closed, and the air diffusing tube moves outward from the module from the fixed portion of the air diffusing tube toward the tip. 3. It is arranged with an inclination, and is arranged.
The hollow fiber membrane module described.
型の中空糸膜モジュールが複数個配設されてなり、シー
ト状の各中空糸膜がそれぞれほぼ平行に位置するように
中空糸膜モジュールの構造材が濾液を導く導水管に接続
されてなる中空糸膜モジュール組立体に於て、中空糸膜
の糸長方向と平行に散気管が配設されていることを特徴
とする中空糸膜モジュール組立体。4. A hollow fiber comprising a plurality of flat type hollow fiber membrane modules composed of a sheet-shaped hollow fiber membrane knitted fabric, wherein the sheet-shaped hollow fiber membranes are positioned substantially parallel to each other. In a hollow fiber membrane module assembly in which the structural material of the membrane module is connected to a water conduit for guiding the filtrate, a hollow fiber membrane is arranged in parallel with the length direction of the hollow fiber membrane. Thread film module assembly.
型の中空糸膜モジュールが複数個配設されてなり、シー
ト状の各中空糸膜がそれぞれほぼ平行に位置するように
中空糸膜モジュールの構造材が濾液を導く導水管に接続
されてなる中空糸膜モジュール組立体に於て、中空糸膜
の糸長方向に対して垂直方向に散気管が配設されている
ことを特徴とする中空糸膜モジュール組立体。5. A hollow fiber comprising a plurality of flat-shaped hollow fiber membrane modules made of a sheet-shaped hollow fiber membrane knitted fabric, wherein the sheet-shaped hollow fiber membranes are positioned substantially parallel to each other. In a hollow fiber membrane module assembly in which the structural material of the membrane module is connected to a water conduit for guiding the filtrate, an air diffuser is arranged in a direction perpendicular to the length direction of the hollow fiber membrane. And a hollow fiber membrane module assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28353493A JP3453173B2 (en) | 1993-11-12 | 1993-11-12 | Hollow fiber membrane module with diffuser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28353493A JP3453173B2 (en) | 1993-11-12 | 1993-11-12 | Hollow fiber membrane module with diffuser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07136470A true JPH07136470A (en) | 1995-05-30 |
| JP3453173B2 JP3453173B2 (en) | 2003-10-06 |
Family
ID=17666782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28353493A Expired - Fee Related JP3453173B2 (en) | 1993-11-12 | 1993-11-12 | Hollow fiber membrane module with diffuser |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3453173B2 (en) |
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|---|---|---|---|---|
| WO1997006880A3 (en) * | 1995-08-11 | 1997-05-01 | Zenon Environmental Inc | Vertical skein of hollow fiber membranes and method of maintaining clean fiber surfaces |
| EP0931582A4 (en) * | 1996-08-22 | 2000-01-26 | Mitsubishi Rayon Co | Hollow fiber membrane module, hollow fiber membrane module unit using the same, and septic tank provided with the module unit |
| EP1170052A1 (en) * | 1995-08-11 | 2002-01-09 | Zenon Environmental Inc. | System for withdrawing permeate from a multicomponent liquid substrate |
| EP1645327A2 (en) * | 1995-08-11 | 2006-04-12 | Zenon Environmental Inc. | Membrane filtration device |
| US8840783B2 (en) | 2007-05-29 | 2014-09-23 | Evoqua Water Technologies Llc | Water treatment membrane cleaning with pulsed airlift pump |
| US8852438B2 (en) | 1995-08-11 | 2014-10-07 | Zenon Technology Partnership | Membrane filtration module with adjustable header spacing |
| US8858796B2 (en) | 2005-08-22 | 2014-10-14 | Evoqua Water Technologies Llc | Assembly for water filtration using a tube manifold to minimise backwash |
| US8956464B2 (en) | 2009-06-11 | 2015-02-17 | Evoqua Water Technologies Llc | Method of cleaning membranes |
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-
1993
- 1993-11-12 JP JP28353493A patent/JP3453173B2/en not_active Expired - Fee Related
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|---|---|---|---|---|
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| US6964741B2 (en) | 1995-08-11 | 2005-11-15 | Zenon Environmental Inc. | Apparatus for withdrawing permeate using an immersed vertical skein of hollow fiber membranes |
| AU715364B2 (en) * | 1995-08-11 | 2000-02-03 | Ge Betzdearborn Canada Company | Vertical skein of hollow fiber membranes and method of maintaining clean fiber surfaces |
| US8852438B2 (en) | 1995-08-11 | 2014-10-07 | Zenon Technology Partnership | Membrane filtration module with adjustable header spacing |
| EP1170052A1 (en) * | 1995-08-11 | 2002-01-09 | Zenon Environmental Inc. | System for withdrawing permeate from a multicomponent liquid substrate |
| WO1997006880A3 (en) * | 1995-08-11 | 1997-05-01 | Zenon Environmental Inc | Vertical skein of hollow fiber membranes and method of maintaining clean fiber surfaces |
| USRE42669E1 (en) | 1995-08-11 | 2011-09-06 | Zenon Technology Partnership | Vertical cylindrical skein of hollow fiber membranes and method of maintaining clean fiber surfaces |
| US6682652B2 (en) | 1995-08-11 | 2004-01-27 | Zenon Environmental Inc. | Apparatus for withdrawing permeate using an immersed vertical skein of hollow fiber membranes |
| US6620319B2 (en) | 1995-08-11 | 2003-09-16 | Zenon Enviromental Inc. | Apparatus for withdrawing permeate using an immersed vertical skein of hollow fibre membranes |
| EP1645327A3 (en) * | 1995-08-11 | 2006-06-21 | Zenon Environmental Inc. | Membrane filtration device |
| US7063788B2 (en) | 1995-08-11 | 2006-06-20 | Zenon Environmental Inc. | Apparatus for withdrawing permeate using an immersed vertical skein of hollow fibre membranes |
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|---|---|
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