JPH04265127A - Hollow fiber filter module - Google Patents
Hollow fiber filter moduleInfo
- Publication number
- JPH04265127A JPH04265127A JP4553191A JP4553191A JPH04265127A JP H04265127 A JPH04265127 A JP H04265127A JP 4553191 A JP4553191 A JP 4553191A JP 4553191 A JP4553191 A JP 4553191A JP H04265127 A JPH04265127 A JP H04265127A
- Authority
- JP
- Japan
- Prior art keywords
- hollow fiber
- liquid
- liquid chamber
- hollow
- filtration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000012510 hollow fiber Substances 0.000 title claims abstract description 113
- 238000001914 filtration Methods 0.000 claims abstract description 45
- 239000007788 liquid Substances 0.000 claims description 77
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000000638 solvent extraction Methods 0.000 claims description 2
- 239000000706 filtrate Substances 0.000 abstract description 10
- 239000000835 fiber Substances 0.000 abstract description 5
- 239000000126 substance Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 238000004140 cleaning Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000011001 backwashing Methods 0.000 description 7
- 230000004907 flux Effects 0.000 description 6
- 238000005192 partition Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- -1 and for example Substances 0.000 description 3
- 229920000915 polyvinyl chloride Polymers 0.000 description 3
- 239000004800 polyvinyl chloride Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
【0001】0001
【産業上の利用分野】本発明は、水などのろ過に用いる
、多数の中空糸を重合してなる中空糸ろ過モジュールに
関し、特に中空糸内部を容易に清浄化しうる中空糸ろ過
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 filtration module made by polymerizing a large number of hollow fibers used for filtering water, and more particularly to a hollow fiber filtration module whose interior can be easily cleaned.
【0002】0002
【従来の技術】水中の不純物である微粒子などを除去す
ることを目的とした非常に微細な孔を多数有する中空糸
状のろ過膜(通常「中空糸」と呼ばれているので、以下
そのようにいう)があり、それを多数本束ねて中空糸モ
ジュールを作り、ろ過などに用いることが行われている
。[Prior Art] A hollow fiber-like filtration membrane (usually called a "hollow fiber", hereinafter referred to as a "hollow fiber") that has a large number of very fine pores for the purpose of removing fine particles, which are impurities in water. ), and a large number of them are bundled together to make a hollow fiber module and used for filtration, etc.
【0003】この中空糸モジュールは多数本を束ね、端
部を固定部材により固定し、その固定部材において各中
空糸の開口端を形成し、そこに液室を形成している。中
空糸モジュールをろ過に用いるさいには、中空糸内部に
被ろ過液を通して、その外側にろ過液を出す方式と、中
空糸の外側に被ろ過液を存在させて吸引などにより中空
糸内部にろ過液を透過させて得る方式とがあるが、後者
の方式の場合には中空糸の束をU字状に曲げ、中空糸束
の一端と他端をまとめて固定部材で固定し、その固定部
材における中空糸の開口端側に液室を形成し、その液室
からろ過液を取出す構造のものとすることが行われてい
る。この中空糸ろ過モジュールでは、例えば5000本
のU字状中空糸を用いて1万本分の開口端をもつ中空糸
ろ過モジュールを得られ、しかもその製作が容易である
ので、広く採用されている。[0003] In this hollow fiber module, a large number of fibers are bundled together, and the ends are fixed by a fixing member.The fixing member forms an open end of each hollow fiber, and a liquid chamber is formed therein. When using a hollow fiber module for filtration, there are two methods: passing the liquid to be filtered inside the hollow fiber and discharging the filtrate to the outside, and another method in which the liquid to be filtered is placed outside the hollow fiber and the liquid is filtered inside the hollow fiber by suction etc. There is a method of obtaining the material by permeating the liquid, but in the latter method, the bundle of hollow fibers is bent into a U-shape, one end and the other end of the bundle of hollow fibers are fixed together with a fixing member, and the fixing member A structure is used in which a liquid chamber is formed on the open end side of the hollow fiber and the filtrate is taken out from the liquid chamber. This hollow fiber filtration module uses, for example, 5,000 U-shaped hollow fibers to obtain a hollow fiber filtration module with an open end for 10,000 fibers, and is easy to manufacture, so it has been widely adopted. .
【0004】その中空糸ろ過モジュールを図により説明
すると、図3に示すとおり、U字状をした中空糸束2の
一端3及び他端4は、固定部材5において固定され、固
定部材5は環状部材22により囲まれ、固定部材5の中
空糸の開口端側には液室23が形成され、中空糸の内側
に入ったろ過液は液室23へ出て、そこから液通路24
により排出されるようになっている。中空糸は多数本束
ねられて使用されることにより十分大きな水量が得られ
るようになっている。また、U字状中空糸の長さは、固
定部材から中空糸の下端(U字状の底部)までの長さが
中空糸内部の水流による抵抗が増加しない範囲、例えば
60〜70cm程度とされている。To explain this hollow fiber filtration module with a diagram, as shown in FIG. 3, one end 3 and the other end 4 of a U-shaped hollow fiber bundle 2 are fixed in a fixing member 5, A liquid chamber 23 is formed at the open end side of the hollow fiber of the fixing member 5, surrounded by the member 22, and the filtrate that has entered the inside of the hollow fiber exits to the liquid chamber 23, and from there to the liquid passage 24.
It is designed to be discharged by By using a large number of hollow fibers bundled together, a sufficiently large amount of water can be obtained. In addition, the length of the U-shaped hollow fiber is set within a range from the fixing member to the lower end of the hollow fiber (bottom of the U-shape) such that resistance due to water flow inside the hollow fiber does not increase, for example, about 60 to 70 cm. ing.
【0005】この中空糸ろ過モジュールで使用されてい
る中空糸は、優れた浄水機能を有しているが、微細なコ
ロイド状物等を比較的多量に含む水を大量にろ過処理す
る必要がある分野に適用した場合、中空糸の目詰りが起
りやすく、その目詰りを回復するために、従来から行わ
れている中空糸の内部から水を流して逆流する手段とと
もに、下方から気泡を上昇させて中空糸に当ててそれに
物理的振動を与えるという手段が考えられた。[0005] The hollow fibers used in this hollow fiber filtration module have an excellent water purification function, but it is necessary to filter a large amount of water that contains a relatively large amount of fine colloidal substances. When applied to the field, the hollow fibers tend to become clogged, and in order to recover from the clogging, in addition to the conventional method of flowing water from inside the hollow fibers to flow backwards, air bubbles are raised from below. A method of applying physical vibration to the hollow fiber by applying it to the hollow fiber was devised.
【0006】しかし、この方法では多数本の中空糸から
なる中空糸ろ過モジュールの内側にまでその気泡が達し
ないので目詰りがなかなか解消しない。そこで、従来は
中空糸相互の間隔が十分開けられるように、U字状の中
空糸の末端部分であるU字部の底をサポート部材の各片
に引かけて保持する構造などが考えられてきた(実公平
2−13069号公報)。However, with this method, the air bubbles do not reach the inside of the hollow fiber filtration module made up of a large number of hollow fibers, so clogging is difficult to eliminate. Therefore, conventionally, a structure has been considered in which the bottom of the U-shaped portion, which is the end portion of the U-shaped hollow fibers, is hooked onto each piece of the support member to hold the hollow fibers together. (Reference Publication No. 2-13069).
【0007】[0007]
【発明が解決しようとする課題】しかし、この中空糸ろ
過モジュールを使用してろ過を行った場合、特に微細な
コロイド状物等を比較的多量に含む水をろ過する場合、
あるいは生物学的処理槽中でろ過を行う場合には、中空
糸表面の目詰りの問題だけではなく、中空糸内部の目詰
りの問題を生ずることがわかった。[Problems to be Solved by the Invention] However, when filtering is performed using this hollow fiber filtration module, especially when filtering water containing a relatively large amount of fine colloidal substances, etc.
Alternatively, when filtration is performed in a biological treatment tank, it has been found that not only the problem of clogging on the surface of the hollow fibers but also the problem of clogging inside the hollow fibers occurs.
【0008】これは、被ろ過液が微細なコロイド状物な
どを比較的多量に含むことにより、この微細なコロイド
状物などが中空糸の微細な孔から中空糸の内部に入った
とき、中空糸内の通路はきわめて細くてろ過液の流速も
小さく、特に中空糸の末端ではその流量あるいは流速が
小さいため中空糸内部から液室へ流れ出すことがなくて
滞留してしまう。[0008] This is because the liquid to be filtered contains a relatively large amount of fine colloidal substances, and when these fine colloidal substances enter the inside of the hollow fiber through the fine holes of the hollow fiber. The passages within the fibers are extremely narrow and the flow rate of the filtrate is low, especially at the ends of the hollow fibers, where the flow rate or velocity is low, so the filtrate does not flow out from inside the hollow fibers into the liquid chamber and stagnates.
【0009】しかも、中空糸表面の目詰りを解消するた
め定期的に中空糸内部へ逆洗水を流すと、内部に滞留し
ていたコロイド状物などが微細な孔から出にくいために
中空糸の末端に追い込まれてたまってしまう。そして、
ろ過作業の継続とともにその蓄積量は増大し、たまった
部分は有効なろ過が行われないので、透過流束が減少す
ることになる。Moreover, when backwashing water is periodically flowed into the inside of the hollow fiber to eliminate clogging on the surface of the hollow fiber, colloidal substances accumulated inside the hollow fiber are difficult to come out from the fine pores. I get stuck at the end of the line. and,
As the filtration work continues, the accumulated amount increases, and since effective filtration is not performed in the accumulated portion, the permeation flux decreases.
【0010】この中空糸内部の蓄積物は、中空糸内部か
らの逆洗や中空糸表面への気泡の衝突によっては除去す
ることができない。中空糸表面の目詰り解消のために採
用されている化学的薬剤による洗浄を適用しても、内部
の蓄積物を溶解除去するためには強力な薬剤でないと効
果がないし、それも時間がかかるであろうし、薬剤によ
る中空糸の損傷も大きくなる。[0010] This accumulation inside the hollow fiber cannot be removed by backwashing from the inside of the hollow fiber or by bombarding the surface of the hollow fiber with air bubbles. Even if chemical cleaning is applied to eliminate clogging on the surface of hollow fibers, only strong chemicals are effective in dissolving and removing the internal buildup, and it takes time. Therefore, the damage to the hollow fibers caused by the drug will also increase.
【0011】本発明者は中空糸内部に液流を通せば蓄積
物を除去できるかと考えたが、図3に示す従来の中空糸
ろ過モジュールでは中空糸の開口端に同じ液圧がかかる
ため、逆洗と同様となり、液流が通り抜けるように流通
することはない。本発明は、各U字状中空糸の両端から
ろ過液から取り出せるとともに、各中空糸の一端から他
端へ液流を流通しうるようにした中空糸ろ過モジュール
を提供することを目的とするものである。[0011] The inventor considered that the accumulated material could be removed by passing a liquid flow inside the hollow fiber, but in the conventional hollow fiber filtration module shown in FIG. 3, the same liquid pressure is applied to the open end of the hollow fiber. It is similar to backwashing, and the liquid does not flow through it. SUMMARY OF THE INVENTION An object of the present invention is to provide a hollow fiber filtration module in which a filtrate can be extracted from both ends of each U-shaped hollow fiber, and a liquid flow can flow from one end of each hollow fiber to the other end. It is.
【0012】0012
【課題を解決するための手段】本発明は、U字状中空糸
の一端が固定部材で開口している液室と他端が固定部材
で開口している液室とを別にすることによって、前記中
空糸の一端から他端へ、あるいはその逆に液流が流通し
うるようにしたものである。すなわち、本発明は、中空
糸束をU字状にし、中空糸束の一端側を固定部材で固定
してその一端側の開口端を区画して第1の液室を形成し
、中空糸束の他端側を固定部材で固定してその他端側の
開口端を区画して第2の液室を形成し、第1の液室及び
第2の液室に接続する液通路をそれぞれ設け、両液通路
の間に両液通路への連通及び遮断を行う切替弁を設けた
ことを特徴とする中空糸ろ過モジュールによって前記の
目的を達成した。[Means for Solving the Problems] The present invention separates the liquid chamber in which one end of the U-shaped hollow fiber is opened by a fixing member and the liquid chamber in which the other end is opened by a fixing member. The liquid flow can flow from one end of the hollow fiber to the other end or vice versa. That is, in the present invention, the hollow fiber bundle is formed into a U-shape, one end of the hollow fiber bundle is fixed with a fixing member, and the open end of the one end is defined to form a first liquid chamber. fixing the other end with a fixing member and partitioning the open end of the other end to form a second liquid chamber, and providing liquid passages connected to the first liquid chamber and the second liquid chamber, respectively; The above object has been achieved by a hollow fiber filtration module characterized in that a switching valve is provided between both liquid passages for communicating with and blocking the two liquid passages.
【0013】本発明の中空糸ろ過モジュールを図面によ
り説明する。図1及び図2は、本発明の一例である中空
糸ろ過モジュール1を模式図により示す。U字状の中空
糸束2(図では模式的に示す関係で一本のように示され
ている)の一端3が固定部材5で固定され、またその他
端4も固定部材5で固定され、前記中空糸束2の一端3
の開口端を区画して液室6が形成され、また前記他端4
の開口端を区画して液室7が形成され、液室6と液室7
とは隔室8により仕切られている。液室6及び液室7に
はそれぞれ液通路9,10が設けられ、両液通路の間に
切替弁11を有する液通路12が設けられている。The hollow fiber filtration module of the present invention will be explained with reference to the drawings. FIGS. 1 and 2 schematically show a hollow fiber filtration module 1 that is an example of the present invention. One end 3 of the U-shaped hollow fiber bundle 2 (shown as one in the diagram for schematic purposes) is fixed with a fixing member 5, and the other end 4 is also fixed with a fixing member 5, One end 3 of the hollow fiber bundle 2
A liquid chamber 6 is formed by dividing the open end of the opening end 4, and the other end 4
A liquid chamber 7 is formed by dividing the open end of the liquid chamber 6 and the liquid chamber 7.
It is separated from the other by a compartment 8. Liquid passages 9 and 10 are provided in the liquid chamber 6 and the liquid chamber 7, respectively, and a liquid passage 12 having a switching valve 11 is provided between the two liquid passages.
【0014】中空糸の長さは有効に水を透過しうる上か
ら制限があり、U字状とした底部の末端まで60〜70
cmとするのが普通である。中空糸の径は0.2mm〜
2mmの範囲のものが普通用いられる。中空糸の材質と
しては種々のものが使用でき、例えばセルロール系、ポ
リオレフィン系、ポリスルホン系、ポリビニルアルコー
ル系の各種材料のものを使用することができる。この中
、耐久性に優れ、かつろ過性能に優れたものとしては、
ポリオレフィン系の多孔質中空糸が挙げられ、例えばポ
リエチレン系の多孔質中空糸が好ましく用いられる。[0014] The length of the hollow fiber is limited from the point where it can effectively permeate water, and the length of the hollow fiber is 60 to 70 mm up to the end of the U-shaped bottom.
It is normal to use cm. Hollow fiber diameter is 0.2mm~
Those in the 2 mm range are commonly used. Various materials can be used for the hollow fibers, such as cellulose-based, polyolefin-based, polysulfone-based, and polyvinyl alcohol-based materials. Among these, the ones with excellent durability and filtration performance are:
Examples include polyolefin-based porous hollow fibers, and for example, polyethylene-based porous hollow fibers are preferably used.
【0015】本発明の中空糸ろ過モジュールを形成する
にさいしては、中空糸の多数本を束ねてU字状に曲げ、
その一端を固定部材で接着剤などにより固定し、他端を
同様に固定部材により固定し、各端の開口部を区画して
液室を形成するが、前記の各固定部材は共通した1個の
ものであることが好ましく、その場合には両液室は隔壁
で区分することにより容易に形成することができる。各
固定部材を別のものとすることもできるが、製造が簡単
でない。固定部材における中空糸束の固定にさいしては
、中空糸相互が密着しないように中空糸が均一に存在す
るようにするのが好ましく、また、U字状中空糸の底端
はなるべく互いに離すように保持するのが目詰り防止上
から好ましい。In forming the hollow fiber filtration module of the present invention, a large number of hollow fibers are bundled and bent into a U-shape.
One end is fixed with a fixing member using an adhesive or the like, and the other end is similarly fixed with a fixing member, and an opening at each end is partitioned to form a liquid chamber. In that case, both liquid chambers can be easily formed by separating them with a partition wall. Although each fixing member could be separate, it would not be easy to manufacture. When fixing the hollow fiber bundle in the fixing member, it is preferable to arrange the hollow fibers uniformly so that they do not come into close contact with each other, and also to keep the bottom ends of the U-shaped hollow fibers as far away from each other as possible. From the viewpoint of preventing clogging, it is preferable to maintain the temperature at
【0016】[0016]
【作用】本発明の中空糸ろ過モジュールをろ過に使用し
た場合について説明する。図1に示すろ過操作時におい
ては、切替弁11は開とされ、液通路13からの吸引に
より、中空糸束2から入ったろ液はそれぞれ液室6及び
7に集められ、液通路9,12及び10を通って液通路
13から取り出される。このさい、図2に示す切替弁1
5は閉となっていて、液通路14とは遮断されているが
、図1では簡単のため図示を省略している。[Operation] The case where the hollow fiber filtration module of the present invention is used for filtration will be explained. During the filtration operation shown in FIG. and 10 and taken out from the liquid passage 13. At this time, the switching valve 1 shown in FIG.
5 is closed and cut off from the liquid passage 14, but is not shown in FIG. 1 for the sake of simplicity.
【0017】ろ過操作の継続に伴い、中空糸束2の中空
糸内にコロイド状物質がたまって目詰りが生じたさいに
は、図2に示すように切替弁11を閉とし、切替弁15
を開として、液通路14から液を送り、液通路9、液室
6を経て、中空糸束2の端部3から中空糸内部に液を送
るときには、中空糸内部で端部4へ流れる液流が生じ、
中空糸内部にたまっていたコロイド状物質などは液流に
よって押し流され、液流とともに液室7、液通路10及
び液通路13をへて流出することにより除去することが
できる。As the filtration operation continues, if colloidal substances accumulate in the hollow fibers of the hollow fiber bundle 2 and cause clogging, the switching valve 11 is closed as shown in FIG.
When the opening is opened and the liquid is sent from the liquid passage 14 to the inside of the hollow fiber from the end 3 of the hollow fiber bundle 2 through the liquid passage 9 and the liquid chamber 6, the liquid flowing inside the hollow fiber to the end 4 is A flow arises,
Colloidal substances accumulated inside the hollow fibers can be removed by being swept away by the liquid flow and flowing out through the liquid chamber 7, liquid passage 10, and liquid passage 13 together with the liquid flow.
【0018】中空糸表面における目詰りに対する逆洗操
作は従来と同様に図1の状態で液通路13から逆に洗浄
液を送り込むことにより行なわれる。図2における中空
糸内部の洗浄にさいしては、洗浄液としてろ過により得
られたろ液を用いてもよく、また化学洗浄に用いる薬液
を用いてもよいが、濃度が希薄なものの方がよい。The backwashing operation for clogging on the surface of the hollow fibers is carried out in the same manner as in the prior art by feeding the cleaning liquid in the opposite direction from the liquid passage 13 in the state shown in FIG. When cleaning the inside of the hollow fiber in FIG. 2, a filtrate obtained by filtration may be used as the cleaning liquid, or a chemical solution used for chemical cleaning may be used, but it is better to use one with a dilute concentration.
【0019】[0019]
【実施例】以下、実施例によって本発明を具体的に説明
する。ただし、本発明はこの実施例のみに限定されるも
のではない。
実施例
1本の断面積が0.118mm2 で、長さ1500m
mのポリエチレン製中空糸5000本を束ね、これをU
字状に曲げ、その一端及び他端との間に隔板を置いて一
緒にまとめ接着剤で結合して直径70mmの固定部材と
する。前記の中空糸束の一端及び他端の端部を切りそろ
えて各開口端を形成し、各開口端をポリ塩化ビニル板で
囲み、前記隔板が隔壁となるように区分してそれぞれの
液室を形成し、各液室に管径10mmのポリ塩化ビニル
管をそれぞれ接続し、かつこれらの管の中間位置に、切
替弁を有する同じ管径のポリ塩化ビニル管の両端を接続
させることにより中空糸ろ過モジュールを得た。
実験例[Examples] The present invention will be specifically explained below with reference to Examples. However, the present invention is not limited to this example. Example: The cross-sectional area of one piece is 0.118 mm2, and the length is 1500 m.
5,000 polyethylene hollow fibers of m are bundled together and
Bend it into a letter shape, place a partition between one end and the other end, put them together and bond them with adhesive to make a fixing member with a diameter of 70 mm. One end and the other end of the hollow fiber bundle are trimmed to form each open end, each open end is surrounded by a polyvinyl chloride plate, and the partition is partitioned so that the partition plate serves as a partition wall to form each liquid chamber. A hollow pipe is formed by connecting a polyvinyl chloride pipe with a pipe diameter of 10 mm to each liquid chamber, and connecting both ends of a polyvinyl chloride pipe with a switching valve with the same pipe diameter to the intermediate position of these pipes. A thread filtration module was obtained. Experimental example
【0020】実施例の中空糸ろ過モジュールを用いて、
BOD500ppmの有機性汚水を処理するMLSSが
5000ppmに保持された活性汚泥法の生物学処理槽
に浸漬して中空糸の内側から吸引してろ過し、透過水を
得た。このさいの透過流束(フラックス)は0.3m3
/m2 ・日であって、適時逆洗のみを行なったが時
間が経過して透過流束が0.2m3 /m2 ・日に減
少したときに逆洗をし、その後に、切替弁11を閉にし
て、一方の液室から中空糸を通して他方の液室へ洗浄液
(ろ液)を5分間通した。この洗浄をしたものでろ過を
行った直後の透過流束は0.3m3 /m2 ・日であ
った。[0020] Using the hollow fiber filtration module of the example,
It was immersed in a biological treatment tank using an activated sludge method in which MLSS, which treats organic wastewater with a BOD of 500 ppm, was maintained at 5000 ppm, and filtered by suction from the inside of a hollow fiber to obtain permeated water. The permeation flux at this time is 0.3m3
/m2 ・days, and only backwashing was performed in a timely manner, but as time passed and the permeation flux decreased to 0.2m3 /m2 ・days, backwashing was performed, and after that, the switching valve 11 was closed. The cleaning liquid (filtrate) was passed from one liquid chamber to the other liquid chamber through the hollow fiber for 5 minutes. The permeation flux of this washed product immediately after filtration was 0.3 m3/m2.day.
【0021】これに対して、実施例と同じ長さ、本数の
中空糸束を用い、隔壁を設けず、1つの液室しか有さな
い従来型の中空糸ろ過モジュールを用いて上と同様の処
理を行ったところ、逆洗を行ったのみでは透過流束は0
.2m3 /m2 ・日から回復しなかった。On the other hand, the same method as above was carried out using a conventional hollow fiber filtration module that had the same length and number of hollow fibers as in the example, no partition wall, and only one liquid chamber. When the treatment was carried out, the permeation flux was 0 if only backwashing was performed.
.. It did not recover from 2m3/m2 ・days.
【0022】[0022]
【発明の効果】本発明の中空糸ろ過モジュールは、U字
状中空糸束の一端と他端とが別々の液室で区分されてい
るために、中空糸の一端から他端、あるいはその逆に液
流を通すことができるので、中空糸内部にコロイド状物
質がたまることによる目詰り、あるいは流通の障害を生
じたさいには洗浄液を通すことにより除くことができる
。それによりろ過にさいしての透過流束を大きく維持す
ることができる。また、ろ過操作にさいしては両方の液
室からろ液を吸引することができるので、中空糸のろ過
面積を有効に利用することができる。Effects of the Invention In the hollow fiber filtration module of the present invention, one end and the other end of the U-shaped hollow fiber bundle are separated by separate liquid chambers. Since a liquid flow can be passed through the hollow fibers, if clogging or flow obstruction occurs due to the accumulation of colloidal substances inside the hollow fibers, it can be removed by passing a cleaning liquid through the hollow fibers. This makes it possible to maintain a large permeation flux during filtration. Furthermore, during the filtration operation, the filtrate can be sucked from both liquid chambers, so the filtration area of the hollow fibers can be effectively utilized.
【図1】ろ過操作に使用されている状態下の、本発明の
一例の中空糸ろ過モジュールの模式図である。FIG. 1 is a schematic illustration of an exemplary hollow fiber filtration module of the present invention under conditions used in a filtration operation.
【図2】内部洗浄が行われている状態下の、本発明の一
例の中空糸ろ過モジュールの模式図である。FIG. 2 is a schematic diagram of a hollow fiber filtration module according to an example of the present invention while internal cleaning is being performed.
【図3】従来の中空糸ろ過モジュールの模式図である。FIG. 3 is a schematic diagram of a conventional hollow fiber filtration module.
1 本発明の中空糸ろ過モジュール 2 中空糸束 3 中空糸束の一端 4 中空糸束の他端 5 固定部材 6 液室 7 液室 9 液通路 10 液通路 11 切替弁 12 液通路 13 液通路 1 Hollow fiber filtration module of the present invention 2 Hollow fiber bundle 3 One end of the hollow fiber bundle 4 Other end of hollow fiber bundle 5 Fixed member 6 Liquid chamber 7 Liquid chamber 9 Liquid passage 10 Liquid passage 11 Switching valve 12 Liquid passage 13 Liquid passage
Claims (1)
端側を固定部材で固定してその一端側の開口端を区画し
て第1の液室を形成し、中空糸束の他端側を固定部材で
固定してその他端側の開口端を区画して第2の液室を形
成し、第1の液室及び第2の液室に接続する液通路をそ
れぞれ設け、両液通路の間に両液通路への連通及び遮断
を行う切替弁を設けたことを特徴とする中空糸ろ過モジ
ュール。Claim 1: A hollow fiber bundle is formed into a U-shape, one end of the hollow fiber bundle is fixed with a fixing member, an open end of the one end is defined to form a first liquid chamber, and a first liquid chamber is formed by forming a first liquid chamber. A second liquid chamber is formed by fixing the other end with a fixing member and partitioning the open end of the other end, and providing liquid passages connected to the first liquid chamber and the second liquid chamber, respectively. A hollow fiber filtration module characterized in that a switching valve is provided between the liquid passages for communicating with and blocking both liquid passages.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4553191A JPH04265127A (en) | 1991-02-20 | 1991-02-20 | Hollow fiber filter module |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4553191A JPH04265127A (en) | 1991-02-20 | 1991-02-20 | Hollow fiber filter module |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH04265127A true JPH04265127A (en) | 1992-09-21 |
Family
ID=12721985
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4553191A Pending JPH04265127A (en) | 1991-02-20 | 1991-02-20 | Hollow fiber filter module |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH04265127A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5403479A (en) * | 1993-12-20 | 1995-04-04 | Zenon Environmental Inc. | In situ cleaning system for fouled membranes |
-
1991
- 1991-02-20 JP JP4553191A patent/JPH04265127A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5403479A (en) * | 1993-12-20 | 1995-04-04 | Zenon Environmental Inc. | In situ cleaning system for fouled membranes |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4445862B2 (en) | Hollow fiber membrane module, hollow fiber membrane module unit, membrane filtration device using the same, and operating method thereof | |
JPH07185268A (en) | Hollow fiber filter membrane element and module | |
JPH0596136A (en) | Hollow-fiber membrane module and using method therefor | |
US7422690B2 (en) | Filtering system | |
JP3131092B2 (en) | Hollow fiber membrane module assembly | |
JP2000343095A (en) | Activated sludge treating device | |
JP2002113338A (en) | Separation membrane element and module using the same | |
JP2001038165A (en) | Filtration process | |
JP3381990B2 (en) | Hollow fiber membrane module | |
JP2001029751A (en) | Separation apparatus and solid-liquid separation method | |
JPH06170178A (en) | Hollow fiber membrane module filtration equipment | |
JP4437527B2 (en) | Membrane filtration module | |
JPH04265127A (en) | Hollow fiber filter module | |
JPH11342320A (en) | Operation of hollow fiber membrane module | |
JPH07136469A (en) | Hollow yarn membrane module and use thereof | |
JP3694536B2 (en) | Membrane module | |
JPH08215548A (en) | Membrane module | |
JP2001321645A (en) | Filter membrane element and method for manufacturing permeated water | |
JPH0824590A (en) | Method for filtering concentrated organic solution | |
JPH038419A (en) | Method for preventing clogging of filter membrane of liquid filter device and liquid filter device | |
JP4423525B2 (en) | Hollow fiber type selectively permeable membrane element | |
JPH04171030A (en) | Filtration apparatus | |
JP3151977B2 (en) | Hollow fiber membrane module filtration device | |
JPH07289859A (en) | Filtering device | |
JP2004130211A (en) | Filtration unit, filter, and method for controlling the filter |