JPH0724264A - Filtering method using hollow fiber membrane module - Google Patents

Filtering method using hollow fiber membrane module

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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
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module
hollow fiber
fiber membrane
membrane
sheet
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JP3014248B2 (en
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Masumi Kobayashi
Kenji Watari
謙治 亘
真澄 小林
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Mitsubishi Rayon Co Ltd
三菱レイヨン株式会社
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Abstract

PURPOSE:To efficiently clean membranes of the whole module and to suppress decrease in the effective membrane area by arranging a sheet-type planer hollow fiber membrane module in such a manner that the sheets of the module are vertically arranged when a liquid is filtered while the module is scrubbed with air from the lower side of the module. CONSTITUTION:When a liquid is filtered while the sheet-type planer hollow fiber membrane module 2 is scrubbed with air introduced from the lower side of the module through a diffuser pipe 4. The module 2 is arranged with the sheet plane vertically disposed. Thereby, whole of the module can efficiently be cleaned so that decrease in the effective membrane area or clogging of the membrane can be suppressed. Especially, for filtering highly polluted water, the cleaning efficiency is improved and clogging of the membrane is suppressed so that a high filtering flow rate can be maintained for a long time.

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 This invention relates to a filtration method using a hollow fiber membrane module, to a filtration method suitable for filtration, especially a highly polluted liquids by 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、 Conventionally, the hollow fiber membrane module, sterile water,
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。 Drinking water, manufacture and high purity water, have been used many in the field of so-called microfiltration such air purification, in recent years, secondary treatment in wastewater treatment plants, highly polluted, such solid-liquid separation in the tertiary treatment or septic tank Study used in water treatment applications have been made in various forms.

【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。 [0003] The hollow fiber membrane module for use in such applications, due to the large clogging of the hollow fiber membrane during filtration process, after a predetermined time filtration process, the membrane surface by vibrating the hollow fiber membranes send air washing or repeatedly performs the film surface cleaning, such as passed through the treated water to the filtration treatment with the reverse direction.

【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。 However, the hollow fiber membrane module which is used in these fields, the conventional cylindrical type placed by focusing the hollow fiber membrane in a circular shape or a concentric shape which have been used in the field of microfiltration there was almost.
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。 Further, even if the improvement is performed, in many cases only ones changing the filling factor and filling the form of a 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 [Problems that the Invention is to Solve highly polluted water by using such a conventional hollow fiber membrane modules (e.g., 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。 0 ppm, when performing filtering processing of TOC ≧ 100 ppm) through the deposit of such organic matter adhering to the hollow fiber membrane surface with use, are integrated hollow fiber membranes to each other anchoring (adhesion) to by the effective membrane area of ​​the hollow fiber membrane is reduced in the module, a sharp drop in the filtration rate was observed.

【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。 [0006] Also when such a regularly performing membrane surface cleaning or backwashing the hollow fiber membrane module in which the hollow fiber membranes to each other are integrated by fixing it, is easy once functional recovery of modules secured integrally without reduction of the cleaning efficiency was observed.

【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、 [0007] As a solution to this problem, instead of the focusing type hollow fiber membrane module, placing the hollow fiber membranes into a sheet,
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。 One end portion or both end portions of the hollow fiber membranes, each with a fixed member of one or the two different housing a hollow fiber membrane module comprising fixed while maintaining the open state, perpendicular to the hollow fiber membrane fixing member the hollow fiber membrane module is proposed shape of a cross are both an elongated 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。 [0008] The hollow fiber membrane module of such a sheet-like flat is a hollow fiber membrane by a layer spacing becomes possible to evenly spaced inner and outer layers, when the film surface cleaning, a hollow fiber membrane surface since it is very easy to uniformly cleaned, and it is possible to suppress a reduction in filtration efficiency as far a module suitable for filtration of highly polluted water.

【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、 [0009] membrane surface cleaning of the flat hollow fiber membrane modules is carried out by a method such as vibrating the yarn air scrubbing,
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 seat surface in the horizontal and fixed by stacking a plurality of modules vertically, the feed air from below the modules, when performing scrubbing washing, air bubbles is hitting the module up to three to one free from the bottom efficiency but difficult to pass between the hollow yarn air bubbles thereto from above the well module, outside of the module, i.e. the film surface cleaning portion having no hollow fiber membrane above the module for air bubbles to pass through there may not have been made 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、 [0010] Therefore, without laminating the module in order to perform equally air scrubbing in each module,
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。 In a state where the sheet surface was horizontal, when in parallel laterally, a can body or tank is greater 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。 [0011] In place also the air bubbles has not passed, suspended solids settle to the seat surface, deposition, or attached, there are problems such that the progress of the reduction and clogging of the effective membrane area.

【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。 [0012] The present invention relates to a liquid using a sheet-shaped flat hollow fiber membrane modules, 於Ru particularly the filtration of highly polluted water is obtained by solving such problems, a sheet-like flat hollow fiber at a filtration method using a membrane module, the entire module can be efficiently membrane surface cleaning, such as to suppress the progress of clogging of the reducing and the film surface of the effective membrane area, and an object thereof is to provide a filtration method .

【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。 SUMMARY OF i.e. the invention According to an aspect of, upon filtering the liquid while scrubbing was carried out continuously or intermittently by the air from under the sheet-shaped flat hollow fiber membrane module, the sheet surface is vertical so that is to filtration by placing the module.

【0014】以下に本発明を図面に従い詳細に説明する。 [0014] will be described in detail in accordance with the drawings of the present invention will be described below. 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。 Figure 1 is a diagram showing an example of a method for supporting the hollow fiber membrane module in the filtration method using a sheet-shaped flat hollow fiber membrane module of the present invention, in the can body, or intracisternal, the vertical sheet surface, secure the module longitudinal direction of the hollow fiber membrane in the horizontal, it is a perspective view when is disposed in parallel three modules laterally. 1は集水管、 1 water collection tube,
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。 2 hollow fiber membrane, 3 the hollow fiber membrane focusing end, 4 respectively show diffuser plate.

【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。 The flat hollow fiber membrane modules used in the present invention, hollow fiber membranes arranged into a sheet is fixed by the potting resin while keeping the both ends or one end in the opening shape, the opening of the hollow fiber membranes are familiar with the water collection tube.

【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。 [0016] Only one end of the hollow fiber membrane is not limited to being connected to the water collecting pipe at the opening shape, both ends of the hollow fiber membrane is fixed while maintaining the opening shape, be one having a water collecting pipe at both ends even if no problem. 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。 That is, the hollow fiber focusing end 3 may be a water collecting pipe in each of FIG.

【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。 [0017] In module fixed and the hollow fiber membrane 2 is required appropriate relaxation, too take relaxation, the hollow fiber membrane becomes bow-shaped receiving the buoyancy, and the width of the vibration of the hollow fiber membrane is increased by the stress by buckling at the base of the hollow fiber potting resin hardening portion for fixing the focusing end and each of the hollow fiber membrane becomes large, since the decrease in the strength of the interface portion occurs, the resin curing portion and the hollow fiber membranes there is a crack or Setsuson of the hollow fiber membrane occurs between. 固定した時の弛緩率は、3% Relaxation rate when the fixed 3%
以内より好しくは1%以内が望ましい。 Good properly from within 1% less desirable.

【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。 The module fixing method is any method such as fixed using a jig methods and dedicated fixing stand and clamp a vessel and cans body is used, the module is moved in such air scrubbing It does not matter if it is fixed such a way as never.

【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 diffuser plate 4 is intended to air scrubbing, what may be one such as long as such air bubbles strike 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。 [0020] Thus although the figure has become diffuser plate, no problem even by using a diffusion pipe composed of a and porous material that a hole in the pipe. 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。 Connect the blower to the diffuser plate or diffuser tube performs bubbling by blowing air from the filtration operation in a continuous or intermittent blower performs membrane surface cleaning.

【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。 [0021] As in FIG. 1, adjacent to the case of fixing arranged laterally in parallel a plurality of modules, in order to compact the can body and the treatment tank, as well as take into account that perform air scrubbing efficiency it is preferred module spacing small that it is considered that hardly street air valve between too narrow the spacing module.

【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。 [0022] Thus, the spacing between modules appropriate interval is required, the interval is preferably in the range of 30 to 100 mm. 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。 In practice it is possible to select the size of the module, the number modules, the spacing between the modules in consideration of the backwash 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 Examples of the hollow fiber membranes 2, for example cellulose, polyolefin, polyvinyl alcohol, 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。 MA system can be used those made of various materials such as polysulfone, particularly polyethylene, those having high strength and elongation such as polypropylene material preferred.

【0024】尚濾過膜として使用可能なものであれば、 If [0024] Note that as it can be used as a filtration membrane,
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 Pore ​​size, porosity, thickness, but not particularly limited to the outer diameter or the like, considering the strength and the like of the secured and the hollow fiber membrane of the membrane area per removing objects or volume, as a preferred example, a pore size 0. 01
〜1μm、空孔率20〜90%、膜厚5〜300μm、 ~1μm, a porosity of 20% to 90%, the film thickness 5~300μm,
外径20〜2000μmの範囲を挙げることができる。 It can be mentioned range of the outer diameter 20~2000Myuemu.

【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。 [0025] In addition, the pore size of the case for the purpose of removal of bacteria it becomes essential is 0.2μm or less, hundreds of thousands of limited from the cut-off molecular weight of several of thousands in the case for the purpose of removal of organic substances and virus It is sometimes used outside the filtration membrane.

【0026】中空糸膜の表面特性としては、エチレン− [0026] As the surface properties of the hollow fiber membranes, ethylene -
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。 It is preferable to the surface holding the such polymers saponified vinyl acetate copolymer is a so-called permanent hydrophilic film having a hydrophilic group. 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。 When the surface is a hydrophobic hollow fiber membrane, organics adsorption to the membrane surface serve hydrophobic interaction occurs between the water to be treated of the organic matter and the hollow fiber membrane surface, it leads filtration membrane surface obstruction 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。 [0027] Further, clogging from adsorption filtration performance recovery is also generally difficult by membrane surface cleaning. 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。 Permanent hydrophilic membrane the hydrophobic interaction between the organic material and the hollow fiber membrane surface can be reduced by using, it is possible to suppress the adsorption of organic matter.

【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。 [Action] The sheet surface of the sheet-shaped flat hollow fiber membrane module in the vertical by fixing the module, in particular, the case of performing filtering in a plurality of modules, by arranging the parallel modules in the horizontal direction, it can be carried out uniformly air scrubbing for all modules. 又、 or,
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。 By sheet surfaces is in the vertical, it is possible to prevent settling of suspended materials on the sheet surface, the deposition.

【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。 The present invention is specifically described by the following examples. 〔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2m 2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。 Example 1, Comparative Example 1 Ethylene - using flat hollow fiber membrane module of the membrane area 2m 2 comprising a saponified vinyl acetate copolymer of polyethylene hollow fiber membrane held on a surface, the method of fixing the module a comparison of the differential pressure rise during filtration operation due to the difference went.

【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、 [0030] As a method of fixing and the arrangement of the module, the sheet surface of the module is fixed so as to be horizontal in the tank, a method of laminating the five modules vertically (hereinafter method I), the other is the seat surface of the module in the vertical and and fix the longitudinal direction of the hollow fiber membrane in the horizontal,
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。 Five modules were performed by the method of placing in parallel to the 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。 The method also I and method II, be intervals of adjacent modules was set to 60 mm. タンク内に200p 200p in the tank
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。 Filled with water, which was suspended pm of yeast, it was filtered with this water as raw water.

【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、 The filtration method is in a state completely immersed module to raw water, connecting the inlet side of the water collecting pipe and the pump,
ポンプで吸引することによって濾過を行った。 It was filtered by suction with a pump. 濾過流量は一定で、330ml/min(LV=0.0099m Filtration flow rate is constant, 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。 / Set h), filtered 5 minutes, was operated stop 5 min (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。 It should be noted in operation (filtration, stop both) for the module, the sheet surface below the method lowermost module in I, also, from the lower side of each the method II 5 amino module, in both It was scrubbed with air continuously 35Nl / min.

【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 [0034] In method I, 1 th and 2 th modules from the bottom is sufficiently air scrubbing washing was able stable filtration (30 days) performed, 15 in three from the bottom
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。 Day between, clogging occurs filtrate is no longer obtained in both 8 days in the module at the 4 th and top.

【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 stable operation over five increase in the differential pressure is small in all modules 40 days in the module in the process II is performed.

【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。 [0036] Thus, the increase in the differential pressure from the methods I towards the filtration method in the process II is suppressed, it can be seen that stable filtration can be sustained.

【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。 Filtration method using a flat hollow fiber membrane module of the present invention, when the membrane surface cleaning by continuous or intermittent air scrubbing during filtration operation, the air in the entire hollow fiber membrane module per cleaning efficiency is improved.
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。 Also that the seat surface is in the vertical, it is possible to prevent settling of suspended materials on the sheet surface, the deposition.

【0038】従って、膜面の目詰まりの進行を抑えることができる。 [0038] Thus, it is possible to suppress the progress of the clogging of the membrane surface. 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。 Particularly At a filtration of highly polluted water, washing efficiency is improved, the clogging of the membrane surface can be maintained long term high filtration flow rate that are suppressed.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【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。 1 is a perspective view showing an example of a method for supporting the hollow fiber membrane module in the filtration method using a sheet-shaped flat hollow fiber membrane module of the present invention.

【符号の説明】 DESCRIPTION OF SYMBOLS

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 diffuser plate

Claims (1)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 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。 Upon 1. A while the lower sheet of flat hollow fiber membrane module is continuously or intermittently scrubbing by air filtering liquids, that sheet surface is placed the module to be perpendicular filtration methods using a hollow fiber membrane module according to claim.
JP5171719A 1993-07-12 1993-07-12 Filtration method using a hollow fiber membrane module Expired - Lifetime JP3014248B2 (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01241824A (en) * 1988-03-23 1989-09-26 Nec Corp Washing device for semiconductor substrate
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

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01241824A (en) * 1988-03-23 1989-09-26 Nec Corp Washing device for semiconductor substrate
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
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
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
WO1999029630A1 (en) * 1997-12-05 1999-06-17 Mitsubishi Rayon Co., Ltd. Apparatus and method for treating water
US6511602B1 (en) 1997-12-05 2003-01-28 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
US6899811B2 (en) 2000-05-04 2005-05-31 Zenon Environmental Inc. Immersed membrane apparatus
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
US7972510B2 (en) 2006-06-26 2011-07-05 Sumitomo Electric Fine Polymer, Inc. Filtration apparatus
WO2012077742A1 (en) * 2010-12-09 2012-06-14 東レ株式会社 Method for producing chemical by continuous fermentation
CN103249840A (en) * 2010-12-09 2013-08-14 东丽株式会社 Method for producing chemical by continuous fermentation
US9365876B2 (en) 2010-12-09 2016-06-14 Toray Industries, Inc. Method for producing chemical by continuous fermentation
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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