JPH0724264A - Filtering method using hollow fiber membrane module - Google Patents
Filtering method using hollow fiber membrane moduleInfo
- Publication number
- JPH0724264A JPH0724264A JP17171993A JP17171993A JPH0724264A JP H0724264 A JPH0724264 A JP H0724264A JP 17171993 A JP17171993 A JP 17171993A JP 17171993 A JP17171993 A JP 17171993A JP H0724264 A JPH0724264 A JP H0724264A
- Authority
- JP
- Japan
- Prior art keywords
- module
- hollow fiber
- fiber membrane
- membrane
- sheet
- 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.)
- Granted
Links
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
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を用
いた濾過方法に関し、特に汚濁性の高い液体を中空糸膜
モジュールで濾過するのに適した濾過方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filtration method using a hollow fiber membrane module, and more particularly to a filtration method suitable for filtering a highly polluted liquid with a hollow fiber membrane module.
【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 treatment, tertiary treatment in sewage treatment plants and solid-liquid separation in septic tanks Various 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。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.
【0004】しかしながら、これらの分野で用いられて
いる中空糸膜モジュールは、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集束
して配置した円筒形タイプのものが殆んどであった。
又、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。However, the hollow fiber membrane module used in these fields is of a cylindrical type in which hollow fiber membranes are concentrically arranged in a circular shape or a concentric circle which has been used in the field of conventional microfiltration. Was almost all.
Further, even if improvements are made, many of them merely change the filling rate or filling form of the hollow fiber membrane.
【0005】[0005]
【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。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.
【0006】又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 not easy to recover the function of the module once fixed and integrated. However, there was a decrease in cleaning efficiency.
【0007】この問題の解決策として、集束型の中空糸
膜モジュールに換えて、中空糸膜をシート状に配置し、
中空糸膜の片端部あるいは両端部が、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。As a solution to this problem, a hollow fiber membrane module is replaced with a concentrating hollow fiber membrane module, and the hollow fiber membranes are arranged in a sheet form.
A hollow fiber membrane module in which one end or both ends of a hollow fiber membrane are fixed by fixing members in one or two different housings while maintaining open states, respectively, and are perpendicular to the hollow fiber membrane of the fixing member. There has been proposed a hollow fiber membrane module in which all the cross-sectional shapes are elongated and substantially rectangular.
【0008】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.
【0009】平型の中空糸膜モジュールの膜面洗浄はエ
アースクラビングで糸を振動させる等の方法で行うが、
シート面を水平にして複数のモジュールを上下に積層し
て固定し、モジュールの下方からエアーを送り、スクラ
ビング洗浄を行う場合、下から1個ないし3個までのモ
ジュールにはエアーバブルが当たっているが、それより
も上方のモジュールに対してはエアーバブルが中空糸間
を通過し難く、モジュールの外側、即ち中空糸膜の無い
部分をエアーバブルが通過するため上方のモジュールで
は膜面洗浄が効率良く行われていないことがある。The membrane surface of the flat type hollow fiber membrane module is washed by a method such as vibrating the yarn by air scrubbing.
When stacking and fixing a plurality of modules vertically with the seat surface horizontal, and sending air from below the modules to perform scrubbing cleaning, air bubbles hit one to three modules from the bottom. However, for the modules above it, it is difficult for air bubbles to pass between the hollow fibers, and because the air bubbles pass through the outside of the module, that is, the part without the hollow fiber membrane, the membrane surface cleaning is efficient in the module above. Sometimes it's not done well.
【0010】そこで、それぞれのモジュールに均等にエ
アースクラビングを行うためにモジュールを積層せず、
シート面を水平にした状態で、横に並列した場合、缶体
や槽が必要以上に大きくなる。Therefore, in order to perform air scrubbing uniformly on each module, the modules are not laminated,
If the seat surfaces are horizontal and they are arranged side by side, the can body and tank will be larger than necessary.
【0011】又エアーバブルが通過していない箇所で
は、懸濁物質がシート面に沈降、堆積、あるいは付着し
て、有効膜面積の減少および目詰まりを進行させる等の
問題がある。In addition, at the place where the air bubbles do not pass, there is a problem that the suspended substance settles, deposits, or adheres to the sheet surface to reduce the effective membrane area and promote clogging.
【0012】本発明は、シート状の平型中空糸膜モジュ
ールを用いた液体、特に高汚濁性水の濾過に於るこのよ
うな問題点を解決したものであり、シート状の平型中空
糸膜モジュールを用いた濾過方法に於て、モジュール全
体が効率良く膜面洗浄でき、有効膜面積の減少や膜面の
目詰まりの進行を抑えるような、濾過方法を提供するこ
とをその目的とする。The present invention solves such a problem in the filtration of a liquid, particularly highly polluted water, using a sheet-shaped flat hollow fiber membrane module. An object of the present invention is to provide a filtration method using a membrane module, which is capable of efficiently cleaning the entire membrane surface of the module and suppressing the reduction of the effective membrane area and the progress of clogging of the membrane surface. .
【0013】[0013]
【課題を解決するための手段】即ち本発明の要旨は、シ
ート状の平型中空糸膜モジュールの下方からエアーによ
るスクラビングを連続的若しくは断続的に行いながら液
体を濾過するに際し、シート面が垂直となるように該モ
ジュールを配置して濾過することにある。Means for Solving the Problems That is, the gist of the present invention is that when a liquid is filtered from below a sheet-like flat hollow fiber membrane module while continuously or intermittently scrubbing with air, the sheet surface is vertical. The module is arranged so that
【0014】以下に本発明を図面に従い詳細に説明す
る。図1は、本発明におけるシート状の平型中空糸膜モ
ジュールを用いた濾過方法における中空糸膜モジュール
の支持方法の一例を示した図で、缶体内あるいは槽内に
おいて、シート面を垂直にし、中空糸膜の長手方向を水
平にしてモジュールを固定し、3個のモジュールを横に
並列して配置させたときの斜視図である。1は集水管、
2は中空糸膜、3は中空糸膜集束端部、4は散気板をそ
れぞれ示している。The present invention will be described in detail below with reference to the drawings. FIG. 1 is a diagram showing an example of a method for supporting a hollow fiber membrane module in a filtration method using a sheet-shaped flat hollow fiber membrane module according to the present invention, in which a sheet surface is made vertical in a can or a tank, It is a perspective view when a module is fixed with the longitudinal direction of the hollow fiber membrane horizontal and three modules are arranged side by side. 1 is a water collecting pipe,
Reference numeral 2 is a hollow fiber membrane, 3 is a hollow fiber membrane focusing end portion, and 4 is an air diffuser.
【0015】本発明で用いる平型中空糸膜モジュール
は、シート状に配列された中空糸膜がその両端あるいは
片端を開口状に保った状態でポッティング用樹脂によっ
て固定され、中空糸膜の開口部は集水管に通じている。In the flat hollow fiber membrane module used in the present invention, the hollow fiber membranes arranged in a sheet shape are fixed by potting resin with both ends or one end kept open, and the hollow fiber membrane openings Is connected to a water collection pipe.
【0016】中空糸膜の片端のみが開口状で集水管に接
続されているものに限らず、中空糸膜の両端が開口状を
保った状態で固定され、両端に集水管を有するものであ
っても差し支えない。即ち、それぞれの図において中空
糸集束端部3が集水管であっても構わない。The hollow fiber membrane is not limited to one in which only one end is open and connected to the water collecting pipe, but the hollow fiber membrane is fixed in a state where both ends are kept open and has water collecting pipes at both ends. It doesn't matter. That is, in each drawing, the hollow fiber collecting end portion 3 may be a water collecting pipe.
【0017】モジュールの固定に際して、中空糸膜2は
適当な弛緩が必要であるが、弛緩を採りすぎると、中空
糸膜は浮力を受け弓状になり、且つ中空糸膜の振動する
幅が増大することで、中空糸集束端部を固定するポッテ
ィング樹脂硬化部と個々の中空糸膜の基部における座屈
による応力が大きくなり、界面部分の強度の低下が生ず
るため、樹脂硬化部と中空糸膜の間で中空糸膜の亀裂や
切損が生じることがある。固定した時の弛緩率は、3%
以内より好しくは1%以内が望ましい。When fixing the module, the hollow fiber membrane 2 needs to be appropriately relaxed, but if the relaxation is taken too much, the hollow fiber membrane becomes buoyant and bowed, and the width of vibration of the hollow fiber membrane increases. By doing so, the stress due to buckling at the potting resin cured part that fixes the hollow fiber converging end and the base of each hollow fiber membrane becomes large, and the strength of the interface part decreases, so that the resin cured part and the hollow fiber membrane are reduced. The hollow fiber membrane may be cracked or cut in between. Relaxation rate when fixed is 3%
It is more preferable to be within 1%.
【0018】モジュールの固定方法は、槽内や缶体内で
スタンドやクランプで固定する方法や専用の治具を用い
て固定するなど任意の方法が用いられるが、エアースク
ラビング等の際にモジュールが動くことのないような固
定方法であれば構わない。As a method of fixing the module, any method such as a method of fixing with a stand or a clamp in the tank or the inside of the can or a method of fixing with a dedicated jig can be used, but the module moves during air scrubbing or the like. It does not matter if it is a fixing method that does not occur.
【0019】散気板4は、エアースクラビングするため
のものであるが、モジュール全体にエアーバブルが当た
るようなものであればどのようなものでも構わない。The air diffusing plate 4 is used for air scrubbing, but any air diffusing plate 4 may be used as long as the air bubbles hit the entire module.
【0020】従って図では散気板になっているが、パイ
プに孔を開けたものや多孔性の材料で構成された散気管
を用いても差し支えない。散気板あるいは散気管にブロ
アーを接続し、濾過運転中連続的或は断続的にブロアー
から送風することでバブリングを行い、膜面洗浄を行
う。Therefore, although the diffuser plate is shown in the figure, it is also possible to use a diffuser pipe having a hole or a porous pipe made of a porous material. A blower is connected to an air diffuser or an air diffuser, and bubbling is performed by continuously or intermittently blowing air from the blower during the filtration operation to clean the membrane surface.
【0021】図1のように、複数のモジュールを横方向
に並列に配置して固定する場合には、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
良く行うことを考慮すると隣接するモジュールの間隔は
小さい方が好ましいが、間隔を狭めすぎるとモジュール
間にエアーバルブが通り難くなることが考えられる。As shown in FIG. 1, when a plurality of modules are arranged side by side in a lateral direction and fixed, adjacent ones are considered in order to make a can body and a processing tank compact and to perform efficient air scrubbing. It is preferable that the distance between the modules is small, but if the distance is too narrow, it may be difficult for the air valve to pass between the modules.
【0022】従って、モジュール間の間隔は適切な間隔
が要求され、その間隔は30〜100mmの範囲が適当
である。実際にはモジュールの大きさ、モジュール本
数、エアースクラビング等の逆洗条件を考慮してモジュ
ール間の間隔を選択することができる。Therefore, an appropriate gap is required between the modules, and the gap is preferably in the range of 30 to 100 mm. In practice, the intervals between the modules can be selected in consideration of the size of the modules, the number of modules, and backwashing conditions such as air scrubbing.
【0023】中空糸膜2としては、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、PM
MA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、ポリプロピレン等の強
伸度の高い材質のものが好ましい。As the hollow fiber membrane 2, for example, cellulose type, polyolefin type, polyvinyl alcohol type, PM
Materials made of various materials such as MA-based and polysulfone-based materials can be used, and materials having high strength and elongation such as polyethylene and polypropylene are particularly preferable.
【0024】尚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。If it can be used as a filtration membrane,
The pore diameter, porosity, film thickness, outer diameter, etc. are not particularly limited, but in view of securing a membrane area per removal object or volume and the strength of the hollow fiber membrane, a preferable example is a pore diameter of 0. 01
˜1 μm, porosity 20 to 90%, film thickness 5 to 300 μm,
The outer diameter may be in the range of 20 to 2000 μm.
【0025】又、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。Further, in the case of removing bacteria, it is essential that the pore size is 0.2 μm or less, and in the case of removing organic substances and viruses, the molecular weight cutoff is limited to tens to hundreds of thousands. An outer filtration membrane may be used.
【0026】中空糸膜の表面特性としては、エチレン−
酢酸ビニル共重合体の鹸化物の如き重合体を保持して表
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。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。The surface characteristics of the hollow fiber membrane are ethylene-
A so-called permanent hydrophilization film having a hydrophilic group on the surface thereof while holding a polymer such as a saponified product of vinyl acetate copolymer is desirable. When the surface is a hydrophobic hollow fiber membrane, hydrophobic interaction works between the organic matter in the water to be treated and the surface of the hollow fiber membrane to cause adsorption of organic matter on the membrane surface, which leads to blockage of the membrane surface and filtration. The life is shortened.
【0027】又、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。In addition, clogging caused by adsorption is generally difficult to recover the filtration performance by cleaning 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.
【0028】[0028]
【作用】シート状の平型中空糸膜モジュールのシート面
を垂直にしてモジュールを固定することで、特に、複数
のモジュールで濾過を行う場合、モジュールを水平方向
に並列させて配置することで、全てのモジュールに対し
て均等にエアースクラビングを行うことができる。又、
シート面が垂直になっていることで、シート面上への懸
濁物質の沈降、堆積を防ぐことができる。[Function] By fixing the module by making the sheet surface of the sheet-shaped flat hollow fiber membrane module vertical, and particularly when performing filtration with a plurality of modules, by arranging the modules in parallel in the horizontal direction, Air scrubbing can be done evenly for all modules. or,
By making the sheet surface vertical, it is possible to prevent sedimentation and accumulation of suspended substances on the sheet surface.
【0029】[0029]
【実施例】以下実施例により本発明を具体的に説明す
る。 〔実施例1、比較例1〕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中空糸膜からな
る膜面積2m2 の平型中空糸膜モジュールを用いて、モ
ジュールの固定方法の違いによる濾過運転時の差圧上昇
の比較を行った。The present invention will be described in detail with reference to the following examples. [Example 1, Comparative Example 1] A flat hollow fiber membrane module having a membrane area of 2 m 2 comprising a polyethylene hollow fiber membrane having a saponified product of an ethylene-vinyl acetate copolymer held on the surface was used to fix the module. The difference in the differential pressure during the filtration operation due to the difference was compared.
【0030】モジュールの固定並びに配置の方法として
は、タンク内でモジュールのシート面が水平になるよう
に固定し、5個のモジュールを上下に積層する方法(以
下方法I)と、もう一つはモジュールのシート面を垂直
にして、且つ中空糸膜の長手方向を水平にして固定し、
5個のモジュールを横に並列して配置する方法(以下方
法II)で行った。As a method of fixing and arranging the modules, there are a method of fixing so that the sheet surfaces of the modules are horizontal in the tank and stacking five modules vertically (hereinafter method I), and another method is Fix the module's sheet surface vertically and the hollow fiber membrane's longitudinal direction horizontally,
It was carried out by a method of arranging five modules side by side (hereinafter Method II).
【0031】方法I並びに方法IIとも、隣接するモジュ
ールの間隔は60mmに設定した。タンク内に200p
pmの酵母を懸濁させた水を満たし、この水を原水とし
て濾過を行った。In both Method I and Method II, the distance between adjacent modules was set to 60 mm. 200p in the tank
It was filled with water in which pm yeast was suspended, and this water was used as raw water for filtration.
【0032】濾過方法は、モジュールを原水に完全に浸
漬した状態にし、集水管とポンプの入り口側をつなぎ、
ポンプで吸引することによって濾過を行った。濾過流量
は一定で、330ml/min(LV=0.0099m
/h)に設定し、5分間濾過、5分間停止(ポンプ停
止)を1サイクルとして運転を行った。The filtration method is as follows: the module is completely immersed in raw water, the water collecting pipe is connected to the inlet side of the pump,
Filtration was performed by aspirating with a pump. The filtration flow rate is constant and 330 ml / min (LV = 0.0099 m
/ H), filtration was carried out for 5 minutes, and stopped for 5 minutes (pump stop) as one cycle.
【0033】尚運転中(濾過時、停止時両方共)はモジ
ュールに対して、方法Iでは最下部のモジュールのシー
ト面下方から、また、方法IIではそれぞれ5個のモジュ
ールの下方から、双方共に連続的に35Nl/minの
エアーでスクラビングを行った。During operation (both during filtration and when stopped), the module is operated from below the seat surface of the lowermost module in Method I and from each of five modules in Method II, both from below. Scrubbing was continuously performed with 35 Nl / min of air.
【0034】方法Iでは、下から1個目と2個目のモジ
ュールは、十分にエアースクラビング洗浄が行われ安定
な濾過(30日間)ができたが、下から3個目では15
日間、4個目と最上部でのモジュールでは共に8日間で
目詰まりが起こり濾液が得られなくなった。In the method I, the first and second modules from the bottom were sufficiently air-scrubbed for stable filtration (30 days), but the third module from the bottom was 15
The fourth module and the module at the top were clogged for 8 days, and the filtrate could not be obtained.
【0035】一方方法IIにおけるモジュールでは5個の
モジュール全てにおいて差圧の上昇が少なく40日間に
わたって安定運転が行われた。On the other hand, in the modules of Method II, the increase in differential pressure was small in all five modules and stable operation was performed for 40 days.
【0036】従って、方法IIにおける濾過方法のほうが
方法Iより差圧の上昇が抑えられ、安定した濾過が持続
できることがわかる。Therefore, it can be seen that the filtration method in Method II can suppress the increase in differential pressure more than Method I, and can maintain stable filtration.
【0037】[0037]
【発明の効果】本発明の平型中空糸膜モジュールを用い
た濾過方法は、濾過運転中の連続的あるいは断続的なエ
アースクラビングによる膜面洗浄の際に、モジュールの
中空糸膜全体にエアーが当たり、洗浄効率が向上する。
又シート面が垂直になっていることで、シート面上への
懸濁物質の沈降、堆積を防ぐことができる。EFFECTS OF THE INVENTION The filtration method using the flat hollow fiber membrane module of the present invention is such that during cleaning of the membrane surface by continuous or intermittent air scrubbing during the filtration operation, air is blown over the entire hollow fiber membrane of the module. Therefore, the cleaning efficiency is improved.
Further, since the sheet surface is vertical, it is possible to prevent sedimentation and accumulation of suspended substances on the sheet surface.
【0038】従って、膜面の目詰まりの進行を抑えるこ
とができる。特に高汚濁性水の濾過に於て、洗浄効率が
向上し、膜面の目詰まりが抑制されることで高い濾過流
量を長期間保つことが可能である。Therefore, the progress of clogging of the film surface can be suppressed. Particularly in the filtration of highly polluted water, the cleaning efficiency is improved and clogging of the membrane surface is suppressed, so that a high filtration flow rate can be maintained for a long period of time.
【図1】本発明のシート状の平型中空糸膜モジュールを
用いた濾過方法における中空糸膜モジュールの支持方法
の一例を示した斜視図である。FIG. 1 is a perspective view showing an example of a method for supporting a hollow fiber membrane module in a filtration method using a sheet-shaped flat hollow fiber membrane module of the present invention.
1 集水管 2 中空糸膜 3 中空糸膜集束端部 4 散気板 1 Water collecting pipe 2 Hollow fiber membrane 3 Hollow fiber membrane focusing end 4 Air diffuser
Claims (1)
方からエアーによるスクラビングを連続的若しくは断続
的に行いながら液体を濾過するに際し、シート面が垂直
となるように該モジュールを配置することを特徴とする
中空糸膜モジュールを用いた濾過方法。1. When a liquid is filtered from below a sheet-shaped flat hollow fiber membrane module while continuously or intermittently scrubbing with air, the module is arranged so that the sheet surface becomes vertical. A filtration method using a characteristic hollow fiber membrane module.
Priority Applications (1)
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JP5171719A JP3014248B2 (en) | 1993-07-12 | 1993-07-12 | Filtration method using hollow fiber membrane module |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5171719A JP3014248B2 (en) | 1993-07-12 | 1993-07-12 | Filtration method using hollow fiber membrane module |
Publications (2)
Publication Number | Publication Date |
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JPH0724264A true JPH0724264A (en) | 1995-01-27 |
JP3014248B2 JP3014248B2 (en) | 2000-02-28 |
Family
ID=15928406
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JP5171719A Expired - Lifetime JP3014248B2 (en) | 1993-07-12 | 1993-07-12 | Filtration method using hollow fiber membrane module |
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Cited By (7)
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---|---|---|---|---|
WO1999029630A1 (en) * | 1997-12-05 | 1999-06-17 | Mitsubishi Rayon Co., Ltd. | Apparatus and method for treating water |
US6325928B1 (en) | 1999-11-18 | 2001-12-04 | Zenon Environmental Inc. | Immersed membrane element and module |
US6899811B2 (en) | 2000-05-04 | 2005-05-31 | Zenon Environmental Inc. | Immersed membrane apparatus |
KR100624154B1 (en) * | 2004-10-21 | 2006-09-19 | 주식회사 코오롱 | Submerged hollow fiber membrane module |
WO2008001730A1 (en) | 2006-06-26 | 2008-01-03 | Sumitomo Electric Fine Polymer, Inc. | Filtration apparatus |
KR100937376B1 (en) * | 1995-08-11 | 2010-01-20 | 제논 테크놀로지 파트너쉽 | An apparatus for withdrawing permeate from a substrate and a method of treating water using the same |
WO2012077742A1 (en) * | 2010-12-09 | 2012-06-14 | 東レ株式会社 | Method for producing chemical by continuous fermentation |
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KR101008697B1 (en) * | 1995-08-11 | 2011-01-17 | 제논 테크놀로지 파트너쉽 | An apparatus for withdrawing permeate from a substrate and a method for treating water using the same |
KR100979435B1 (en) * | 1995-08-11 | 2010-09-02 | 제논 테크놀로지 파트너쉽 | A method of treating water using an apparatus for withdrawing permeate from a substrate, a process for withdrawing filtered permeate from activated sludge at ambient pressure, and a process for withdrawing filtered permeate from a substrate |
US6511602B1 (en) | 1997-12-05 | 2003-01-28 | Mitsubishi Rayon Co., Ltd. | Apparatus and method for treating water |
WO1999029630A1 (en) * | 1997-12-05 | 1999-06-17 | Mitsubishi Rayon Co., Ltd. | Apparatus and method for treating water |
US6325928B1 (en) | 1999-11-18 | 2001-12-04 | Zenon Environmental Inc. | Immersed membrane element and module |
US7037426B2 (en) | 2000-05-04 | 2006-05-02 | Zenon Environmental Inc. | Immersed membrane apparatus |
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US7300582B2 (en) | 2000-11-15 | 2007-11-27 | Zenon Technology Partnership | Immersed membrane apparatus |
KR100624154B1 (en) * | 2004-10-21 | 2006-09-19 | 주식회사 코오롱 | Submerged hollow fiber membrane module |
WO2008001730A1 (en) | 2006-06-26 | 2008-01-03 | Sumitomo Electric Fine Polymer, Inc. | Filtration apparatus |
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JP5978995B2 (en) * | 2010-12-09 | 2016-08-24 | 東レ株式会社 | Process for producing chemicals by continuous fermentation |
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