JPH04247285A - Method for filtering using hollow fiber filter module and production of hollow fiber filter module - Google Patents
Method for filtering using hollow fiber filter module and production of hollow fiber filter moduleInfo
- Publication number
- JPH04247285A JPH04247285A JP3031317A JP3131791A JPH04247285A JP H04247285 A JPH04247285 A JP H04247285A JP 3031317 A JP3031317 A JP 3031317A JP 3131791 A JP3131791 A JP 3131791A JP H04247285 A JPH04247285 A JP H04247285A
- Authority
- JP
- Japan
- Prior art keywords
- hollow fiber
- hollow fibers
- hollow
- module
- fixing member
- 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 138
- 238000001914 filtration Methods 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims description 12
- 238000004519 manufacturing process Methods 0.000 title description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 7
- 239000005416 organic matter Substances 0.000 claims description 4
- 239000012466 permeate Substances 0.000 claims description 4
- 239000000706 filtrate Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 9
- 239000010802 sludge Substances 0.000 description 8
- 239000000835 fiber Substances 0.000 description 6
- 239000012528 membrane Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- -1 and for example Substances 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 229910021645 metal ion Inorganic materials 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
- 238000000926 separation method Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 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
- 238000009434 installation Methods 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Activated Sludge Processes (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、有機物含有水の生物学
的処理において中空糸ろ過モジュールを用いてろ過する
方法、及びそのろ過に使用するのに適した中空糸ろ過モ
ジュールの製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of filtration using a hollow fiber filtration module in the biological treatment of organic matter-containing water, and a method of manufacturing a hollow fiber filtration module suitable for use in the filtration.
【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
るために開発された、非常に微細な孔を多数有する中空
糸（「中空糸膜」とも、場合によっては「中空糸ろ過膜
」とも呼ばれている。）は薄いろ過膜を支持体で補強支
持したりする必要がないので、製作が容易であり、しか
も多数本で中空糸モジュールを作り、その本数を増すこ
とによりそのろ過能力を大きくすることが容易であるた
めに実用的な装置を簡単につくることができる。[Prior Art] Hollow fibers (also called ``hollow fiber membranes'' or ``hollow fiber filtration membranes'' in some cases) that have a large number of very fine pores were developed to remove fine particles, which are impurities in water. ) is easy to manufacture because there is no need to reinforce and support the thin filtration membrane with a support, and it is also possible to make a hollow fiber module with many fibers, and by increasing the number of fibers, the filtration capacity can be increased. Since it is easy to do so, a practical device can be easily made.
【０００３】この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や金属イオン等を比較的多量に
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、中空糸の内部から水を流して逆流するとと
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。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。Although this hollow fiber has an excellent water purification function, when applied to fields where it is necessary to filter a large amount of water containing relatively large amounts of fine colloidal substances and metal ions, the hollow fiber The threads tend to become clogged, and in order to recover from the clogging, water is flowed from inside the hollow fibers and flows backwards, and air bubbles are raised from below and applied to the hollow fibers to give them physical vibrations. was considered. but,
In 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.
【０００４】特に、中空糸ろ過モジュールは、Ｕ字状の
中空糸を約５，０００組のような多数本をその開口部で
束ねるようにまとめ、接着剤で固めて固定部材とし、そ
の周囲を周囲部材により包囲することにより、実質的に
約１万本の中空糸をもつ中空糸ろ過モジュールを製作し
ているので、固定部材の附近では中空糸が互にびっしり
と集合しているため、中空糸の目詰りが起り易く、かつ
なかなか解消しない。In particular, a hollow fiber filtration module has a large number of U-shaped hollow fibers, approximately 5,000 pairs, tied together at the opening, hardened with adhesive to form a fixing member, and the surrounding area is By surrounding it with surrounding members, a hollow fiber filtration module with approximately 10,000 hollow fibers is manufactured. Thread clogging occurs easily and is difficult to clear.
【０００５】そこで、従来は、中空糸相互の間隔が十分
に開けられるように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っかけて保持する構
造などが考えられた（実公平２−１３０６９号公報）。[0005] Conventionally, therefore, in order to provide sufficient spacing between the hollow fibers, the end portions of the U-shaped hollow fibers were
A structure in which the bottom of the character portion is hooked onto each piece of the support member and held therein has been considered (publication of Utility Model Publication No. 2-13069).
【０００６】また、中空糸ろ過モジュールの末端部でな
く、中空糸の開口部を束ねた固定部材における中空糸の
密度を小さくするため、環状部材を中空糸に対して垂直
方向に切断したさいの中空糸の占有断面積（Ｓｔ）と環
状部材内断面積（Ｓｒ）との比Ｒを、０．１１と０．６
０との間にあるようにした中空糸ろ過モジュールが提案
された（特開昭６０−２５５１１５号公報）。このモジ
ュールは固定部材内の中空糸の設置密度が特定の範囲に
あることが、中空糸の有効利用及びろ過機能の回復性を
良好にする上で必要であるというものである。[0006] In order to reduce the density of the hollow fibers in the fixing member that bundles the openings of the hollow fibers, rather than at the ends of the hollow fiber filtration module, it is possible to The ratio R of the occupied cross-sectional area (St) of the hollow fiber and the internal cross-sectional area (Sr) of the annular member is 0.11 and 0.6.
A hollow fiber filtration module has been proposed in which the value is between 0 and 0 (Japanese Unexamined Patent Publication No. 60-255115). In this module, it is necessary that the installation density of the hollow fibers in the fixing member be within a specific range in order to effectively utilize the hollow fibers and improve the recovery of the filtration function.
【０００７】ただ、従来は、前記モジュールは液体が流
れる管中に設置して使用されるのが普通であったため、
充填率を小さくすると固定部材が大きくなり、管が太く
なるなどで実用的でない。However, in the past, the module was usually installed and used in a pipe through which liquid flows;
If the filling rate is reduced, the fixing member becomes larger and the tube becomes thicker, which is not practical.
【０００８】[0008]
【発明が解決しようとする課題】ところで、最近下水な
どの有機性汚水を生物学的に処理するさいに、通常生物
学的処理槽の後に固液分離装置を設けてそこで汚泥を沈
降分離するなどして分離していたのに代えて、前記の中
空糸ろ過モジュールを生物学的処理槽に設置して、そこ
から中空糸透過水を取り出し、固液分離装置を省略する
方法が提案されてきた。この方法によると、ＳＳがほと
んどゼロの膜透過水が得られるので、固液分離槽からの
分離水からＳＳを除去するための凝集分離などの手段を
取らなくてもよいなどの利点がある。[Problem to be Solved by the Invention] Recently, when organic wastewater such as sewage is treated biologically, a solid-liquid separator is usually installed after the biological treatment tank and the sludge is separated by sedimentation. Instead of the previous method, a method has been proposed in which the hollow fiber filtration module is installed in a biological treatment tank and the hollow fiber permeated water is taken out from there, omitting the solid-liquid separator. . According to this method, membrane-permeated water with almost zero SS can be obtained, so there is an advantage that there is no need to take measures such as coagulation and separation to remove SS from the separated water from the solid-liquid separation tank.
【０００９】しかし、この方法では処理槽内の汚泥がだ
んだん濃縮されるため、ＳＳ濃度が高くて、中空糸は目
詰りを生じやすく、特に中空糸相互の間において目詰り
を生じやすかった。これは中空糸の間に入った処理液は
水を吸引されて汚泥がその間で固まり、丁度結着剤のよ
うになって中空糸群が束ねたように固まってしまうので
、全体のろ過面積も低下してしまうため、透過流束が小
さくなってしまう。However, in this method, since the sludge in the treatment tank is gradually concentrated, the SS concentration is high and the hollow fibers are likely to become clogged, particularly between the hollow fibers. This is because the treatment liquid that enters between the hollow fibers sucks water and the sludge hardens between them, acting like a binder and solidifying as if the hollow fibers were bundled together, reducing the overall filtration area. As a result, the permeation flux becomes small.
【００１０】このような現象は、前記した特開昭６０−
２５５１１５号公報記載の中空糸ろ過モジュールを用い
ても避けることができなかった。それは、このモジュー
ルが原子炉復水などのような金属イオンや極く微細なコ
ロイド状物を比較的多量に含む水を大量に処理する浄水
器を対象としているため、生物学的処理槽中の液には対
応できないのである。[0010] Such a phenomenon has been reported in the above-mentioned Japanese Patent Application Laid-open No. 1983-
Even when using the hollow fiber filtration module described in 255115, this problem could not be avoided. This is because this module is intended for water purifiers that process large amounts of water, such as nuclear reactor condensate, that contains relatively large amounts of metal ions and extremely fine colloidal substances. It cannot handle liquids.
【００１１】本発明は、生物学的処理槽内に設置しても
目詰りを生じがたく、ろ過性能をすみやかに回復する中
空糸ろ過モジュールを用いてろ過すること、及びそれに
適したモジュールを製造する方法を得ることを目的とす
る。[0011] The present invention provides filtration using a hollow fiber filtration module that does not easily cause clogging even when installed in a biological treatment tank and quickly recovers filtration performance, and manufactures a module suitable for this purpose. The purpose is to find out how to do it.
【００１２】0012
【課題を解決するための手段】本発明は、次の手段によ
って上記の目的を解決することができた。[Means for Solving the Problems] The present invention was able to solve the above objects by the following means.
【００１３】１．有機物含有水を生物学的に処理する反
応槽に中空糸ろ過モジュールを浸漬して中空糸の外側か
ら内側に水を透過させ、ろ過液として槽外へ取り出すろ
過方法において、中空糸ろ過モジュールの固定部材にお
ける中空糸の占有面積の合計が前記固定部材の全面積中
に占める割合（「充填率」という）が３％以下である中
空糸ろ過モジュールを用いることを特徴とするろ過方法
。1. Fixing of the hollow fiber filtration module is used in a filtration method in which the hollow fiber filtration module is immersed in a reaction tank for biologically treating organic matter-containing water, allowing water to permeate from the outside of the hollow fiber to the inside, and then taking it out of the tank as a filtrate. A filtration method characterized by using a hollow fiber filtration module in which the total area occupied by hollow fibers in the member accounts for 3% or less of the total area of the fixed member (referred to as "filling ratio").
【００１４】２．間隔を開けて平行に架装した２本の糸
状体又は帯状体に中空糸を一定距離のピッチを置いて糸
状体又は帯状体に亘って張られるように順次巻きつけ、
一方の糸状体又は帯状体にその中空糸を固着させ、この
ようにして形成した張糸体を一端を中心として渦巻き状
に巻きつけ、その巻付体の中空糸が固着された糸状体又
は帯状体の側の部分を接着剤で結合させ、その結合部の
端部を切断して、固定部材を形成することを特徴とする
固定部材における中空糸の充填率が３％以下である中空
糸ろ過モジュールの製造方法。2. Sequentially winding the hollow fibers around two filaments or strips arranged in parallel with an interval between them so that the hollow fibers are stretched over the filaments or strips at a pitch of a certain distance,
The hollow fibers are fixed to one of the filamentous bodies or a band-like body, and the tensioned filament body thus formed is wound in a spiral shape around one end, and the hollow fibers of the wound body are fixed to the filamentous body or band-like body. Hollow fiber filtration in which the filling rate of the hollow fibers in the fixing member is 3% or less, characterized in that the fixing member is formed by bonding the body side parts with an adhesive and cutting the end of the bonded part. How the module is manufactured.
【００１５】本発明のろ過方法に用いる中空糸ろ過モジ
ュールにおいて、固定部材における中空糸の占有面積の
合計が前記固定部材の全面積中に占める割合、すなわち
充填率が３％以下ということは、中空糸を束ねている固
定部材において中空糸が粗に存在するということであっ
て、中空糸相互に間隔を開けて存在しているため、その
中空糸間に液流あるいは気泡が入りやすく、汚泥の詰り
を生じにくくなっている。前記のモジュールにおいては
、充填率が小さいほど汚泥の詰りが生じにくいが、あま
り小さくすると、固定部材の全面積が大きくなり過ぎ、
あるいは固定部材にとりつけられる中空糸の本数が少な
くなって、透過しうる水量が減ってしまうので、経済性
などの面からあまり小さくすることはできないが、０．
１％以上、好ましくは０．５％以上とするのがよい。そ
のさい中空糸相互の間隔はなるべく均一になるようにす
るのが好ましい。In the hollow fiber filtration module used in the filtration method of the present invention, the ratio of the total area occupied by the hollow fibers in the fixing member to the total area of the fixing member, that is, the filling rate is 3% or less, means that the hollow fibers This means that hollow fibers are loosely present in the fixing member that binds the fibers, and because the hollow fibers are spaced apart from each other, liquid flow or air bubbles can easily enter between the hollow fibers, and the sludge It is less likely to get clogged. In the above module, the smaller the filling rate, the less likely sludge clogging will occur, but if it is too small, the total area of the fixing member will become too large.
Alternatively, the number of hollow fibers attached to the fixing member decreases, and the amount of water that can permeate decreases, so it cannot be made too small from the economical point of view.
The content is preferably 1% or more, preferably 0.5% or more. In this case, it is preferable to make the intervals between the hollow fibers as uniform as possible.
【００１６】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。中空糸の孔径は０．０１μ
ｍ〜１μｍの範囲のものが普通用いられる。[0016] 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 pore diameter is 0.01μ
Those in the range of m to 1 μm are commonly used.
【００１７】中空糸の材質としては種々のものが使用で
、例えばセルロール系、ポリオレフイン系、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、ポリオレフイン系の多孔質中
空糸膜が挙げられ、例えばポリエチレン系の多孔質中空
糸膜が好ましく用いられる。Various materials can be used for the hollow fibers, including cellulose, polyolefin, polysulfone, and polyvinyl alcohol. Among these, those having excellent durability and excellent filtration performance include polyolefin-based porous hollow fiber membranes, and for example, polyethylene-based porous hollow fiber membranes are preferably used.
【００１８】図１に、本発明に使用する一例である中空
糸ろ過モジュール１の平面図を示す。固定部材３の中に
なるべく均一に中空糸２が存在し、固定部材３の周囲を
環状部材４が囲んでいる。図２は図１のモジュールの一
部縦断側面図であって、中空糸２の下端のＵ字部はサポ
ート部材５に引掛けられて保持されている。サポート部
材５は環状部材４につながる支柱６により支持されてい
る。このような構造は中空糸の充填率を除いては従来の
中空糸ろ過モジュールと共通するものである。FIG. 1 shows a plan view of a hollow fiber filtration module 1 as an example used in the present invention. The hollow fibers 2 exist as uniformly as possible in the fixing member 3, and the annular member 4 surrounds the fixing member 3. FIG. 2 is a partially vertical side view of the module shown in FIG. 1, in which the U-shaped portion at the lower end of the hollow fiber 2 is hooked onto and held by a support member 5. The support member 5 is supported by a column 6 connected to the annular member 4. This structure is common to conventional hollow fiber filtration modules except for the filling rate of the hollow fibers.
【００１９】本発明に用いる中空糸ろ過モジュールを形
成するに当っては、固定部材中に中空糸を均一に分布さ
せるのが好ましいが、その製造するにさいしては中空糸
を多数本束ね、その周囲を環状部材で囲み、その間隙に
接着剤などを充填して結合し、その環状部材の上方に出
ている部分を水平に切断して、各中空糸の開口部を形成
するようにしている関係で、各中空糸間に一定の間隔を
空けるように保持することが困難で、例えば固定部材の
個所で各中空糸間に薄いスペーサを入れることは技術的
に難しく、手作業を要することになる。しかし、１万本
もの中空糸からなる中空糸ろ過モジュールを手作業で製
作するには人手と長時間を要する。In forming the hollow fiber filtration module used in the present invention, it is preferable to uniformly distribute the hollow fibers in the fixing member. The periphery is surrounded by an annular member, the gap between which is filled with adhesive, etc., and the parts are joined together, and the upper part of the annular member is cut horizontally to form an opening for each hollow fiber. For this reason, it is difficult to maintain a constant spacing between each hollow fiber, and for example, it is technically difficult to insert a thin spacer between each hollow fiber at a fixing member, and it requires manual labor. Become. However, manually manufacturing a hollow fiber filtration module made up of 10,000 hollow fibers requires manpower and a long time.
【００２０】本発明の中空糸ろ過モジュールの製造方法
は、充填率の低い中空糸ろ過モジュールを容易に製造で
きるものであって、図３に示すように、例えば上下に間
隔を開けて平行に架装した２本の糸状体（又は帯状体）
７及び８に、中空糸２を上の糸状体７から下の糸状体８
に亘って張られ、さらに下から上に張られるように、一
定距離のピッチを置いて巻きつけ、上の糸状体７と中空
糸との接触部を接着剤などで固着する。そのさい、上下
の糸状体７及び８は同じ方向に一定の速度で移動するよ
うにしておけば、同じ位置で上下の糸状体７，８に中空
糸２を次々に巻きつけ、張設することができる。このよ
うにして上下の糸状体７及び８の間に中空糸２を張設し
て構成した張糸体１０を上下の糸状体７及び８の間に張
られた中空糸２の本数が例えば１万本となったものを１
セットとし、これを一端を中心にして渦巻き状に巻きつ
け、その巻付体の中空糸が固着糸状体の側の部分の隙間
に接着剤などの固着剤を充填して結合し、その結合部の
端部を水平方向に、すなわち中空糸の延長方向に対して
垂直に切断する。すると、多数の中空糸の開口部をもっ
た平らな端部を有する中空糸の集合体が得られる。The method for manufacturing a hollow fiber filtration module of the present invention allows for easy manufacture of a hollow fiber filtration module with a low filling rate, and as shown in FIG. Two thread-like bodies (or band-like bodies)
7 and 8, the hollow fiber 2 is connected from the upper filament 7 to the lower filament 8.
The hollow fibers are wound at a pitch of a certain distance so as to be stretched from the bottom to the top, and the contact portions between the upper filament 7 and the hollow fibers are fixed with an adhesive or the like. At that time, if the upper and lower filaments 7 and 8 are moved in the same direction at a constant speed, the hollow fibers 2 can be wound and stretched around the upper and lower filaments 7 and 8 one after another at the same position. Can be done. In this manner, the number of hollow fibers 2 stretched between the upper and lower filaments 7 and 8 is 1. 1 million books
The set is wound spirally around one end, and the hollow fibers of the wound body are bonded by filling the gap on the side of the fixed filament with a fixing agent such as adhesive, and the bonded part is Cut the end of the hollow fiber horizontally, that is, perpendicular to the direction of extension of the hollow fiber. This results in a hollow fiber assembly having a flat end with a large number of hollow fiber openings.
【００２１】この端部を固定部材とし、その周囲を環状
部材で囲むと、中空糸ろ過モジュールが得られる。この
さい、使用する糸状体又は帯状体７の太さあるいは厚さ
と、これに固着する中空糸のピッチの距離を変えること
により、前記の充填率を変えることができるので、前記
の両条件を選定することによって充填率が３％以下にな
るようにすることができる。A hollow fiber filtration module is obtained by using this end as a fixing member and surrounding it with an annular member. At this time, the above-mentioned filling rate can be changed by changing the thickness or thickness of the thread-like body or band-like body 7 used and the pitch distance of the hollow fibers fixed to it, so both of the above conditions are selected. By doing so, the filling rate can be set to 3% or less.
【００２２】この中空糸ろ過モジュールの製造方法によ
って本発明のろ過方法に用いることができる中空糸ろ過
モジュールを容易に得ることができる。[0022] By this method for manufacturing a hollow fiber filtration module, a hollow fiber filtration module that can be used in the filtration method of the present invention can be easily obtained.
【００２３】また、このように形成したモジュールの各
Ｕ字形をした中空糸２の下端はサポート部材５を用いて
その相互の間隔が広がるように支持し、あるいは固定し
てもよい。なお、モジュールの製造において張糸体の形
成にさいして使用した糸状体（又は帯状体）８は中空糸
２を一定の長さでＵ字状に形成するためのものであるか
ら、張糸体の形成後には不要であるから、取り除いても
よく、その除去の時期は張糸体形成直後とか、あるいは
張糸体の巻付作業上あった方がよければ巻付体形成後と
か適宜選定することができる。必要によりこの糸状体等
８を中空糸２の保持に利用してもよい。Further, the lower ends of each U-shaped hollow fiber 2 of the module thus formed may be supported or fixed using a support member 5 so that the mutual spacing between them is widened. In addition, since the filamentous body (or band-like body) 8 used in forming the tension body in manufacturing the module is for forming the hollow fibers 2 into a U-shape with a certain length, the tension body Since it is unnecessary after the formation of the tension body, it may be removed, and the timing of its removal may be selected as appropriate, such as immediately after the tension body is formed, or if it is better for the tension body winding work, after the winding body is formed. be able to. If necessary, this filamentous body 8 may be used to hold the hollow fiber 2.
【００２４】[0024]
【作 用】本発明のろ過方法においては、それに用い
る中空糸ろ過モジュールが、その固定部材における中空
糸の充填率が３％以下であるため、中空糸がきわめて粗
に存在し、中空糸相互の間隔がかなり開いているため、
有機性汚水のような有機物含有水を生物学的に処理する
反応槽内において使用しても、目詰りが生じがたく、モ
ジュール全体あるいは中空糸の一群が棒状のように固ま
ってしまうことがない。従来の中空糸ろ過モジュールで
は固定部材において中空糸が密に束ねられているため、
モジュールの中央部分付近でも中空糸相互が密接してい
るために、その間に入った被処理水は中空糸により吸引
ろ過されるさいに、中空糸相互の隙間からの被処理水の
後続する流入がないため、ろ過が続いて液中の例えば活
性汚泥が強く脱水されて中空糸相互を固着するような形
になってしまい、棒状になる状態を招いていたが、本発
明では固定部材における中空糸の充填率が前記のように
なっているため、中空糸相互が密接していないので、従
来の欠点を生ずることがない。[Function] In the filtration method of the present invention, the hollow fiber filtration module used therein has a filling rate of hollow fibers of 3% or less in its fixing member, so the hollow fibers are present very sparsely, and the hollow fibers are mutually separated. Since the interval is quite wide,
Even when used in a reaction tank for biologically treating water containing organic matter such as organic sewage, clogging is unlikely to occur, and the entire module or a group of hollow fibers will not harden into a rod-like shape. . In conventional hollow fiber filtration modules, the hollow fibers are tightly bundled in the fixed member, so
Since the hollow fibers are in close contact with each other near the center of the module, when the water to be treated that has entered between them is suction-filtered by the hollow fibers, subsequent inflow of the water to be treated through the gaps between the hollow fibers is difficult. As a result, as filtration continues, the activated sludge in the liquid is strongly dehydrated, causing the hollow fibers to stick to each other and become rod-shaped.However, in the present invention, the hollow fibers in the fixing member Since the filling rate is as described above, the hollow fibers are not in close contact with each other, and the disadvantages of the conventional method do not occur.
【００２５】[0025]
【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に限定されるもので
はない。[Examples] The present invention will be specifically explained below with reference to Examples. However, the present invention is not limited to this example.
【００２６】実施例１
６５ｃｍの間隔で平行に設けた糸状体７及び８を用いて
一本の断面積が０．１１８ｍｍ２ のポリエチレン製中
空糸を約５ｍｍのピッチで巻きつけて張設して形成した
張糸体から下の糸状体を抜いたものを約５０ｍ巻き、そ
れにより形成した巻付体の基部をバンドで締め、それの
中空糸の間隙に接着剤を含浸させて、結合させ、その結
合部を水平に切断して、固定部材を形成し、それを環状
部材で囲んで、末端までの長さが６０ｃｍであるＵ字状
中空糸を約５０００本有する中空糸ろ過モジュールを形
成した。固定部材の直径は２８ｃｍであった。この中空
糸ろ過モジュールにおける中空糸の充填率は約１．９％
であった。Example 1 A polyethylene hollow fiber having a cross-sectional area of 0.118 mm 2 was wound and stretched at a pitch of about 5 mm using filament bodies 7 and 8 arranged in parallel at an interval of 65 cm. The lower thread-like body has been removed from the stretched thread body, which is then wound for about 50 m, the base of the wound body thus formed is tightened with a band, and the gap between the hollow fibers is impregnated with adhesive to bond them together. The joint was cut horizontally to form a fixing member, which was surrounded by an annular member to form a hollow fiber filtration module having approximately 5000 U-shaped hollow fibers with a length of 60 cm to the end. The diameter of the fixing member was 28 cm. The filling rate of hollow fibers in this hollow fiber filtration module is approximately 1.9%.
Met.
【００２７】この中空糸ろ過モジュールを用いて、ＢＯ
Ｄ２００ｐｐｍの有機性汚水を処理するＭＬＳＳが１０
，０００ｐｐｍ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０．２ｍ３
／ｍ２ ・日であって、３０日経過後でもほとんど減
少しなかった。また、目詰りが生じなかった。[0027] Using this hollow fiber filtration module, BO
MLSS that treats organic wastewater with D200ppm is 10
The sample was immersed in a biological treatment tank using an activated sludge method maintained at a concentration of 1,000 ppm, and filtered by suction from the inside of the hollow fiber to obtain permeated water. The permeation flux at this time is 0.2m3
/m2 ·day, and there was almost no decrease even after 30 days. Further, no clogging occurred.
【００２８】比較のため、Ｕ字状中空糸を約５０００本
有し、固定部材の直径が約７ｃｍ（中空糸の充填率約４
０％）である中空糸ろ過モジュールを用いて、同じ生物
学処理槽でろ過を行ったところ、透過流束は０．１ｍ３
／ｍ２ ・日で１０日後には０．０２ｍ３ ／ｍ２
・日に減少し、目詰りが発生し、中空糸の半分以上が棒
状に固まってしまった。For comparison, it has about 5,000 U-shaped hollow fibers, and the diameter of the fixing member is about 7 cm (filling rate of hollow fibers is about 4).
When filtration was performed in the same biological treatment tank using a hollow fiber filtration module with a
/m2 - 0.02m3 /m2 after 10 days
・Clogging occurred, and more than half of the hollow fibers became stick-shaped.
【００２９】[0029]
【発明の効果】本発明のろ過方法では、使用する中空糸
ろ過モジュールが固定部材における中空糸の充填率が３
％以下と低いため、中空糸相互の間隔が十分あいている
ため、中空糸間への処理液の流入が阻害されることがな
いので、活性汚泥等の濃度が比較的高い生物学的処理槽
でも目詰りがほとんど生じない。それにより、このモジ
ュールにおける透過流束が大きく、しかもほとんど減少
しない。Effects of the Invention In the filtration method of the present invention, the hollow fiber filtration module used has a filling rate of hollow fibers in the fixed member of 3.
Since the hollow fibers are spaced sufficiently apart from each other, the flow of treatment liquid between the hollow fibers is not obstructed, making it suitable for biological treatment tanks with relatively high concentrations of activated sludge, etc. However, clogging hardly occurs. As a result, the permeation flux in this module is large and hardly decreases.
【００３０】さらに、このモジュールにおいて中空糸の
末端を互の距離が大きく保たれるように拡げるように保
持するときにはその結果が一層著しい。また、本発明の
中空糸ろ過モジュールの製造方法では、同じ長さをもつ
Ｕ字状の中空糸を固定部材においてなるべく同じ間隔な
いし密度で配置した状態のものを簡単にかつ容易に製造
することができる。機械的作業により製造することがで
き、しかも糸状体又は帯状体の太さやそれに固着させる
中空糸のピッチを変えることによって希望する充填率の
ものを得ることができる。Furthermore, in this module, the results are even more remarkable when the ends of the hollow fibers are held so as to be spread apart so that a large distance from each other is maintained. Further, in the manufacturing method of the hollow fiber filtration module of the present invention, it is possible to simply and easily manufacture a module in which U-shaped hollow fibers having the same length are arranged at the same spacing or density as possible on the fixing member. can. It can be manufactured by mechanical operations, and a desired filling rate can be obtained by changing the thickness of the filament or band and the pitch of the hollow fibers fixed thereto.
【図１】本発明のろ過方法に用いる一例である中空糸ろ
過モジュールの平面図である。FIG. 1 is a plan view of a hollow fiber filtration module as an example used in the filtration method of the present invention.
【図２】図１のモジュールの一部縦断側面図である。FIG. 2 is a partially longitudinal side view of the module of FIG. 1;
【図３】本発明の中空糸ろ過モジュールの製造に用いる
張糸体の模式図である。FIG. 3 is a schematic diagram of a tensioned fiber body used in manufacturing the hollow fiber filtration module of the present invention.
１ 中空糸ろ過モジュール ２ 中空糸 ３ 固定部材 ４ 環状部材 ５ サポート部材 ６ 支柱 ７ 糸状体 ８ 糸状体 ９ 固着部 １０ 張糸体 1 Hollow fiber filtration module 2 Hollow fiber 3 Fixed member 4 Annular member 5 Support members 6 Pillar 7. Filamentous body 8. Filamentous body 9 Fixed part 10 tension body
Claims (2)
応槽に中空糸ろ過モジュールを浸漬して中空糸の外側か
ら内側に水を透過させ、ろ過液として槽外へ取り出すろ
過方法において、中空糸ろ過モジュールの固定部材にお
ける中空糸の占有面積の合計が前記固定部材の全面積中
に占める割合（「充填率」という）が３％以下である中
空糸ろ過モジュールを用いることを特徴とするろ過方法
。Claim 1: A filtration method in which a hollow fiber filtration module is immersed in a reaction tank for biologically treating organic matter-containing water, and water permeates from the outside of the hollow fibers to the inside, and is taken out of the tank as a filtrate. Filtration characterized by using a hollow fiber filtration module in which the total area occupied by the hollow fibers in the fixing member of the thread filtration module occupies 3% or less of the total area of the fixing member (referred to as "filling ratio"). Method.
状体又は帯状体に中空糸を一定距離のピッチを置いて糸
状体又は帯状体に亘って張られるように順次巻きつけ、
一方の糸状体又は帯状体にその中空糸を固着させ、この
ようにして形成した張糸体を一端を中心として渦巻き状
に巻きつけ、その巻付体の中空糸が固着された糸状体又
は帯状体の側の部分を接着剤で結合させ、その結合部の
端部を切断して、固定部材を形成することを特徴とする
固定部材における中空糸の充填率が３％以下である中空
糸ろ過モジュールの製造方法。[Claim 2] Hollow fibers are sequentially wound around two thread-like bodies or strip-like bodies arranged in parallel with an interval between them at a pitch of a certain distance so as to be stretched across the filament-like bodies or strip-like bodies,
The hollow fibers are fixed to one of the filamentous bodies or a band-like body, and the tensioned filament body thus formed is wound in a spiral shape around one end, and the hollow fibers of the wound body are fixed to the filamentous body or band-like body. Hollow fiber filtration in which the filling rate of the hollow fibers in the fixing member is 3% or less, characterized in that the fixing member is formed by bonding the body side parts with an adhesive and cutting the end of the bonded part. How the module is manufactured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3031317A JPH04247285A (en) | 1991-02-01 | 1991-02-01 | Method for filtering using hollow fiber filter module and production of hollow fiber filter module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3031317A JPH04247285A (en) | 1991-02-01 | 1991-02-01 | Method for filtering using hollow fiber filter module and production of hollow fiber filter module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04247285A true JPH04247285A (en) | 1992-09-03 |
Family
ID=12327905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3031317A Pending JPH04247285A (en) | 1991-02-01 | 1991-02-01 | Method for filtering using hollow fiber filter module and production of hollow fiber filter module |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04247285A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001205290A (en) * | 1999-11-19 | 2001-07-31 | Kuraray Co Ltd | Method and apparatus for wastewater treatment |
| FR2820652A1 (en) * | 2001-02-14 | 2002-08-16 | Hoffmann La Roche | HOLLOW FIBER MEMBRANE MODULES AND METHOD OF MAKING SAME |
| JP2010167367A (en) * | 2009-01-22 | 2010-08-05 | Asahi Kasei Chemicals Corp | Water purification membrane treatment apparatus |
| JP2013056346A (en) * | 2006-06-26 | 2013-03-28 | Sumitomo Electric Fine Polymer Inc | Filtration apparatus |
-
1991
- 1991-02-01 JP JP3031317A patent/JPH04247285A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001205290A (en) * | 1999-11-19 | 2001-07-31 | Kuraray Co Ltd | Method and apparatus for wastewater treatment |
| JP4667583B2 (en) * | 1999-11-19 | 2011-04-13 | 株式会社クラレ | Waste water treatment apparatus and waste water treatment method |
| FR2820652A1 (en) * | 2001-02-14 | 2002-08-16 | Hoffmann La Roche | HOLLOW FIBER MEMBRANE MODULES AND METHOD OF MAKING SAME |
| NL1019960C2 (en) * | 2001-02-14 | 2005-04-08 | Hoffmann La Roche | Special hollow fiber membrane module for use in processes strongly influenced by fouling and its manufacture. |
| US7128837B2 (en) | 2001-02-14 | 2006-10-31 | Hoffmann-La Roche Inc. | Hollow fiber membrane module |
| JP2013056346A (en) * | 2006-06-26 | 2013-03-28 | Sumitomo Electric Fine Polymer Inc | Filtration apparatus |
| JP2010167367A (en) * | 2009-01-22 | 2010-08-05 | Asahi Kasei Chemicals Corp | Water purification membrane treatment apparatus |
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