JP2003024751A - Hollow fiber membrane cartridge - Google Patents
Hollow fiber membrane cartridgeInfo
- Publication number
- JP2003024751A JP2003024751A JP2001210229A JP2001210229A JP2003024751A JP 2003024751 A JP2003024751 A JP 2003024751A JP 2001210229 A JP2001210229 A JP 2001210229A JP 2001210229 A JP2001210229 A JP 2001210229A JP 2003024751 A JP2003024751 A JP 2003024751A
- Authority
- JP
- Japan
- Prior art keywords
- hollow fiber
- fiber membrane
- skirt
- cartridge
- hollow
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は加圧式又は吸引式の
タンク型濾過装置、あるいは浸漬型濾過装置に装着され
る中空糸膜を用いた濾過カートリッジに関する。更に詳
しくは、本発明は河川水、湖沼水、地下水、海水、生活
排水、工場排水、下水二次処理水等の原水について除
濁、除菌を行う濾過装置あるいは活性汚泥処理の固液分
離を行う濾過装置に用いられる中空糸膜カートリッジに
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure type or suction type tank type filtration device, or a filtration cartridge using a hollow fiber membrane mounted in an immersion type filtration device. More specifically, the present invention provides a filter device for sterilizing and sterilizing raw water such as river water, lake water, groundwater, seawater, domestic wastewater, factory wastewater, sewage secondary treated water, or solid-liquid separation for activated sludge treatment. The present invention relates to a hollow fiber membrane cartridge used in a filtration device.
【０００２】[0002]
【従来の技術】従来の中空糸膜を用いたカートリッジの
例としては、特開昭６１−１５３１０４号公報に開示さ
れているような、複数の中空糸膜が外筒内に収容され、
中空糸膜の両端が上部接着固定部及び下部接着固定部で
それぞれ外筒に固定され、外筒が中空糸膜の上下両端ま
で一体に形成された構造のものが記載されている。この
カートリッジの上部接着固定部には多数本の中空糸膜の
中空部が開口しているが、下部接着固定部では中空部が
封止されており、かつ接着層に複数の貫通穴が設けられ
ている。また、外筒の下部には下部接着固定部の下方に
延びるスカート部が形成されている。2. Description of the Related Art As an example of a conventional cartridge using a hollow fiber membrane, a plurality of hollow fiber membranes, as disclosed in JP-A-61-153104, are housed in an outer cylinder,
There is described a structure in which both ends of the hollow fiber membrane are fixed to an outer cylinder by an upper adhesive fixing part and a lower adhesive fixing part, respectively, and the outer cylinder is integrally formed to the upper and lower ends of the hollow fiber membrane. The hollow part of the hollow fiber membranes is open in the upper adhesive fixing part of this cartridge, but the hollow part is sealed in the lower adhesive fixing part, and a plurality of through holes are provided in the adhesive layer. ing. Further, a skirt portion extending below the lower adhesive fixing portion is formed in the lower portion of the outer cylinder.
【０００３】この中空糸膜カートリッジは、外圧濾過用
であり、濾過塔に装着されて使用されるが、非透過物が
膜の外表面に堆積すると膜の濾過性能が低下するため、
一定時間の濾過を行った後は、膜面の堆積物を取り除く
洗浄操作が行われる。洗浄方法として、濾過塔内に原水
を満たした状態で中空糸膜カートリッジの下部から空気
を導入し、気液混合流体中で中空糸膜に振動を与えて膜
面の堆積物を剥離するエアーバブリングという方法が用
いられる。This hollow fiber membrane cartridge is for external pressure filtration, and is used by being mounted on a filtration tower. However, when non-permeate is deposited on the outer surface of the membrane, the filtration performance of the membrane is deteriorated.
After filtration for a certain period of time, a cleaning operation for removing deposits on the film surface is performed. As a cleaning method, air is introduced from the lower part of the hollow fiber membrane cartridge while the filter tower is filled with raw water, and vibration is applied to the hollow fiber membrane in a gas-liquid mixed fluid to separate the deposits on the membrane surface. Method is used.
【０００４】しかしながら、この中空糸膜カートリッジ
では、中空糸膜の両端が外筒に固定されているため、中
空糸膜の広がり及び振動が制限され、エアーバブリング
による洗浄が十分に行われないことがある。特にカート
リッジの直径が大きくなるとこの現象が顕著であり、長
期間にわたって濾過運転を行う場合に支障を来すことが
ある。一方、特開２０００−１５７８４６号公報には、
複数本の中空糸膜からなり両端部が接着固定された中空
糸膜束と、一方の端部外周に液密に固定されたカートリ
ッジヘッドと他方端部外周に接着固定された下部リング
とを有する中空糸膜カートリッジにおいて、カートリッ
ジヘッド側の中空糸膜端部の中空部が開口し、下部リン
グ側の中空糸膜端部の中空部が封止され、かつ下部リン
グ側接着固定層に複数の貫通穴が設けられた中空糸膜カ
ートリッジが開示されている。この中空糸膜カートリッ
ジは、エアーバブリングにより中空糸膜を拡げ、振動に
より膜面の堆積物を剥離し、剥離した堆積物を中空糸膜
カートリッジの外に容易に排出が可能である。However, in this hollow fiber membrane cartridge, since both ends of the hollow fiber membrane are fixed to the outer cylinder, the expansion and vibration of the hollow fiber membrane are limited, and the cleaning by air bubbling may not be sufficiently performed. is there. In particular, this phenomenon becomes remarkable when the diameter of the cartridge becomes large, which may be a problem when performing the filtering operation for a long period of time. On the other hand, in Japanese Patent Laid-Open No. 2000-157846,
A hollow fiber membrane bundle composed of a plurality of hollow fiber membranes, both ends of which are adhered and fixed, a cartridge head which is liquid-tightly fixed to the outer circumference of one end, and a lower ring which is adhesively fixed to the outer circumference of the other end. In the hollow fiber membrane cartridge, the hollow portion at the end of the hollow fiber membrane on the cartridge head side is opened, the hollow portion at the end of the hollow fiber membrane on the lower ring side is sealed, and a plurality of penetrations are made in the lower ring side adhesive fixing layer. A hollow fiber membrane cartridge provided with holes is disclosed. In this hollow fiber membrane cartridge, the hollow fiber membrane is expanded by air bubbling, the deposits on the membrane surface are separated by vibration, and the separated deposits can be easily discharged to the outside of the hollow fiber membrane cartridge.
【０００５】この様な中空糸膜カートリッジを用いた濾
過装置では、特開２０００−１５７８４６号公報に例示
されているように、エアーバブリングのために、空気吹
き出しのための散気穴を有する空気導入管をカートリッ
ジの下方に設けるのが通常である。しかしながら、この
場合、散気穴が上を向いていることが多く、原水中の濁
質成分で詰まる可能性がある。一方、ＷＯ００／６２９
０８号公報には、中空糸膜モジュール下部に、密閉した
洗浄用空気導入キャップを接続し、各キャップが洗浄流
体流路を通して接続された構造が開示されている。この
ような構造とすることにより原水中の濁質成分による散
気穴の詰まりが生じることはないが、中空糸膜モジュー
ルへの原水の流入がモジュール下部からは不可能な為、
原水の流入が中空糸膜側面のみからとなり、中空糸膜束
の外側に濁質成分が詰まりやすくなる。特に濁度の高い
原水を濾過する場合、すぐに外側の中空糸膜間に濁質成
分が閉塞し、膜モジュールの透過性能が低下してしまう
という問題があった。In a filtration device using such a hollow fiber membrane cartridge, as illustrated in Japanese Patent Laid-Open No. 2000-157846, air introduction having air diffusion holes for air blowing is performed for air bubbling. It is common to have the tube below the cartridge. However, in this case, the air diffuser hole is often facing upward, and there is a possibility that it may be clogged with turbid components in the raw water. On the other hand, WO00 / 629
Japanese Patent Laid-Open No. 08-2008 discloses a structure in which a closed air introducing cap for cleaning is connected to the lower part of the hollow fiber membrane module and each cap is connected through a cleaning fluid flow path. With such a structure, the diffusion holes in the raw water will not be clogged with air diffuser holes, but since raw water cannot flow into the hollow fiber membrane module from the bottom of the module,
Raw water flows in only from the side surface of the hollow fiber membrane, and the turbid component is likely to be clogged outside the hollow fiber membrane bundle. Especially when filtering raw water having a high turbidity, there was a problem that the turbid component was immediately clogged between the outer hollow fiber membranes and the permeation performance of the membrane module was lowered.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、エアーバブ
リング洗浄時に各中空糸膜の拡がり及び振動を最大限に
許容して、中空糸膜の外表面に堆積した懸濁物を剥離し
やすくするとともに、散気穴が閉塞せず、かつ透過性能
の低下がない中空糸膜カートリッジを提供することを目
的とするものである。DISCLOSURE OF THE INVENTION The present invention maximizes the spread and vibration of each hollow fiber membrane at the time of air bubbling cleaning to facilitate the separation of the suspension accumulated on the outer surface of the hollow fiber membrane. At the same time, it is an object of the present invention to provide a hollow fiber membrane cartridge in which the diffusion holes are not blocked and the permeation performance is not deteriorated.
【０００７】[0007]
【課題を解決するための手段】本発明者らは鋭意研究を
重ねた結果、中空糸膜カートリッジ下部のスカート側面
からエアーバブリング用空気を導入することにより、散
気穴の閉塞が起こらず、また、原水が中空糸膜カートリ
ッジ下部からも導入されるため、中空糸膜束外側での濁
質成分の閉塞が起こらないことを見いだし、本発明を完
成するに至った。Means for Solving the Problems As a result of intensive studies by the present inventors, the introduction of air for air bubbling from the side surface of the skirt at the bottom of the hollow fiber membrane cartridge does not cause clogging of the air diffuser hole, and Since the raw water is introduced also from the lower part of the hollow fiber membrane cartridge, it was found that clogging of the turbid component on the outside of the hollow fiber membrane bundle did not occur, and the present invention was completed.
【０００８】即ち本発明は、
（１）複数本の中空糸膜からなり、両端部が接着固定さ
れた中空糸膜束と、一方の端部外周に液密に接着固定さ
れたカートリッジヘッドと他方端部外周に液密に接着固
定されたスカートとを有し、カートリッジヘッドとスカ
ートが分離されており、カートリッジヘッド側の中空糸
膜端部の中空部は開口し、スカート側の中空糸膜端部の
中空部は封止され、かつスカート側接着固定層に複数の
貫通穴が設けられている中空糸膜カートリッジにおい
て、該スカートの側面に気体導入口を有することを特徴
とする中空糸膜カートリッジ。
（２）複数個の中空糸膜カートリッジが各スカートの気
体導入口において連結されていることを特徴とする、請
求項１記載の中空糸膜カートリッジ、に関するものであ
る。That is, the present invention is as follows: (1) A hollow fiber membrane bundle composed of a plurality of hollow fiber membranes, both ends of which are adhesively fixed, a cartridge head liquid-tightly adhered and fixed to the outer periphery of one end, and the other. The cartridge head and the skirt are separated from each other, and the hollow portion at the end of the hollow fiber membrane on the cartridge head side is open, and the hollow fiber membrane end on the skirt side is open. A hollow fiber membrane cartridge in which a hollow portion is sealed and a plurality of through holes are provided in the skirt-side adhesive fixing layer, wherein a gas introduction port is provided on a side surface of the skirt. . (2) The hollow fiber membrane cartridge according to claim 1, wherein a plurality of hollow fiber membrane cartridges are connected at the gas introduction port of each skirt.
【０００９】[0009]
【発明の実施の形態】以下、図により本発明に係わる中
空糸膜カートリッジの実施形態の例を説明する。図１
は、浸漬型濾過装置に装着された本発明に係わる中空糸
膜カートリッジの一実施態様を示す断面説明図、図２は
複数個の中空糸膜カートリッジのスカートが気体導入口
おいて連結している一例を示すための図である。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a hollow fiber membrane cartridge according to the present invention will be described below with reference to the drawings. Figure 1
FIG. 2 is a cross-sectional explanatory view showing an embodiment of the hollow fiber membrane cartridge according to the present invention mounted on an immersion type filtration device, and FIG. 2 shows that the skirts of a plurality of hollow fiber membrane cartridges are connected at a gas inlet. It is a figure for showing an example.
【００１０】図１において、中空糸膜カートリッジ３
は、多数本の中空糸膜４、接着固定層１０、カートリッ
ジヘッド７、接着固定層１３、およびスカート６とスカ
ート側面に設けられた気体導入口８から構成されてい
る。束ねられた中空糸膜４の一方の端部は、接着剤によ
り中空糸膜同士が一体的に結合されるとともにカートリ
ッジヘッド７内に一体的に結合され、接着固定層１０が
構成されている。そして、カートリッジヘッド７側の中
空糸膜４は端部が開口されている。中空糸膜４の他方の
端部は、接着剤により中空糸膜同士が一体的に結合さ
れ、スカート６内に一体的に結合されて接着固定層１３
が構成されているが、中空糸膜４の端部は封止されてい
る。そして、接着固定層１３には、原水及び洗浄用の気
体を中空糸膜束の内部に導入し、中空糸膜外周面に効果
的に接触させるための複数の貫通穴５が形成されてい
る。In FIG. 1, the hollow fiber membrane cartridge 3
Is composed of a large number of hollow fiber membranes 4, an adhesive fixing layer 10, a cartridge head 7, an adhesive fixing layer 13, and a skirt 6 and a gas introduction port 8 provided on the side surface of the skirt. At one end of the bundled hollow fiber membranes 4, the hollow fiber membranes are integrally bonded together by an adhesive and the cartridge head 7 is integrally bonded to form an adhesive fixing layer 10. The end of the hollow fiber membrane 4 on the cartridge head 7 side is open. At the other end of the hollow fiber membranes 4, the hollow fiber membranes are integrally joined together by an adhesive, and the hollow fiber membranes are integrally joined inside the skirt 6 to form the adhesive fixing layer 13.
However, the end of the hollow fiber membrane 4 is sealed. The adhesive fixing layer 13 is provided with a plurality of through holes 5 for introducing raw water and cleaning gas into the hollow fiber membrane bundle and effectively contacting the hollow fiber membrane outer peripheral surface.
【００１１】中空糸膜カートリッジ３の直径は、３０ｍ
ｍ〜８００ｍｍで、好ましくは、１００ｍｍ〜８００ｍ
ｍに適用される。中空糸膜カートリッジの長さは、３０
０ｍｍ〜３０００ｍｍの範囲から選ばれる。本発明で
は、カートリッジヘッドとスカートが分離しているの
で、カートリッジヘッド７とスカート６の間の中空糸膜
４束外周には従来のような外筒ケースがなく、この間の
中空糸膜はほぼ全長に亘って裸のまま露出している。ま
た、エアバブリング時のスカートの上昇やねじれを防止
する目的で、カートリッジヘッド側の接着固定層１０と
カートリッジヘッド側の接着固定層１０とスカート側の
接着固定層13とを2本以上のパイプまたは棒で連結固定
してもよい。The hollow fiber membrane cartridge 3 has a diameter of 30 m.
m to 800 mm, preferably 100 mm to 800 m
applied to m. The length of the hollow fiber membrane cartridge is 30
It is selected from the range of 0 mm to 3000 mm. In the present invention, since the cartridge head and the skirt are separated, there is no outer case as in the conventional case on the outer circumference of the bundle of hollow fiber membranes 4 between the cartridge head 7 and the skirt 6, and the hollow fiber membrane between them has almost the entire length. It is exposed while being naked. In order to prevent the skirt from rising and twisting during air bubbling, the adhesive fixing layer 10 on the cartridge head side, the adhesive fixing layer 10 on the cartridge head side, and the adhesive fixing layer 13 on the skirt side are provided with two or more pipes or You may connect and fix with a stick.
【００１２】本発明に用いられる中空糸膜４の孔径とし
ては、逆浸透膜、及び、限外濾過膜から精密濾過膜まで
用いる事が出来る。また、中空糸膜４の素材は、特に限
定されず、ポリスルホン、ポリエーテルスルホン、ポリ
アクリロニトリル、ポリイミド、ポリエーテルイミド、
ポリアミド、ポリエーテルケトン、ポリエーテルエーテ
ルケトン、ポリエチレン、ポリプロピレン、ポリー４メ
チルペンテン、セルロース、酢酸セルロース、ポリフッ
化ビニリデン、ポリエチレンーテトラフルオロエチレン
共重合体、ポリテトラフルオロエチレン等が挙げられ
る。またはこれらの複合素材膜も使用できる。また、中
空糸膜の形状としては、内径５０μｍ〜３０００μｍ
で、内／外径比が０．３〜０．８の範囲の膜が使用出来
る。As the pore diameter of the hollow fiber membrane 4 used in the present invention, a reverse osmosis membrane, and an ultrafiltration membrane to a microfiltration membrane can be used. The material of the hollow fiber membrane 4 is not particularly limited, and polysulfone, polyether sulfone, polyacrylonitrile, polyimide, polyetherimide,
Polyamide, polyetherketone, polyetheretherketone, polyethylene, polypropylene, poly-4-methylpentene, cellulose, cellulose acetate, polyvinylidene fluoride, polyethylene-tetrafluoroethylene copolymer, polytetrafluoroethylene and the like can be mentioned. Alternatively, a composite material film of these can be used. The hollow fiber membrane has an inner diameter of 50 μm to 3000 μm.
Thus, a film having an inner / outer diameter ratio of 0.3 to 0.8 can be used.
【００１３】本発明に用いられる接着剤としては、エポ
キシ樹脂、ウレタン樹脂、エポキシアクリレート樹脂、
シリコン樹脂等の高分子材料が挙げられる。接着方法
としては、遠心接着法や静置接着法等の公知の方法が用
いられる。接着剤の硬化収縮や強度を改善したい場合
は、 上記接着剤にガラスファイバー、カーボンファイ
バー等の繊維状物、カーボンブラック、アルミナ、シリ
カ等の微粉体を含有させても良い。As the adhesive used in the present invention, epoxy resin, urethane resin, epoxy acrylate resin,
A polymer material such as a silicone resin may be used. As the bonding method, a known method such as a centrifugal bonding method or a stationary bonding method is used. When it is desired to improve the curing shrinkage and strength of the adhesive, the adhesive may contain a fibrous material such as glass fiber or carbon fiber, or a fine powder such as carbon black, alumina or silica.
【００１４】本発明に用いられるカートリッジヘッド７
及びスカート６の素材は、特に限定されず、また、同一
でも異なっていてもよいが、熱可塑性樹脂やステンレス
鋼が好ましく用いられる。カートリッジヘッド７は、中
空糸膜カートリッジ３をタンク型濾過装置あるいはラッ
ク型濾過装置に懸垂する際の固定部となるため、 カー
トリッジヘッドの形状は懸垂・固定の構造に合わせて作
製される。例えば、外周部に段差や溝を設けたり、ある
いはネジ溝を設けてもよい。Cartridge head 7 used in the present invention
The materials of the skirt 6 and the skirt 6 are not particularly limited and may be the same or different, but thermoplastic resins and stainless steel are preferably used. Since the cartridge head 7 serves as a fixing portion when the hollow fiber membrane cartridge 3 is suspended in the tank type filtration device or the rack type filtration device, the shape of the cartridge head is produced according to the suspension / fixation structure. For example, a step or groove may be provided on the outer peripheral portion, or a screw groove may be provided.
【００１５】本発明のスカート側接着固定層１３に設け
られた貫通穴５は、接着固定層自体に開けられた穴で、
貫通穴の大きさは、相当直径が２ｍｍ〜３０ｍｍの範囲
から選ばれる。貫通穴の形状は、三角形、四角形、六角
形等の多角形、円形、楕円形、扇形、Ｃ字型または星形
などから選ばれる。また、その穴数は、カートリッジの
断面積や糸本数にもよるが、２〜３００個開口させる事
が出来る。貫通穴の位置は、接着固定層断面のたとえ
ば、多重円と放射状線との交点、格子の交点、あるい
は、多数の正三角形の頂点の位置など、接着固定層断面
に均等に分散して設ける事が好ましい。The through hole 5 provided in the skirt-side adhesive fixing layer 13 of the present invention is a hole formed in the adhesive fixing layer itself.
The size of the through hole is selected from the range of the equivalent diameter of 2 mm to 30 mm. The shape of the through hole is selected from a polygon such as a triangle, a quadrangle, and a hexagon, a circle, an ellipse, a fan, a C-shape, or a star. The number of holes can be set to 2 to 300 depending on the cross-sectional area of the cartridge and the number of threads. The positions of the through holes should be evenly distributed in the cross section of the adhesive fixing layer, such as the intersections of the multiple circles and the radial lines, the intersections of the lattice, or the positions of the vertices of many equilateral triangles in the cross section of the adhesive fixing layer. Is preferred.
【００１６】本発明では、スカート６は、好ましくは中
空糸膜の端面より突き出して中空糸膜束外周に固定され
る。端面から突き出した長さは、カートリッジの直径
や、供給される空気量や、貫通穴の径と数によるが、空
気の散逸を防ぐためには５ｍｍ〜２００ｍｍであること
が好ましい。長すぎるとカートリッジの全長が長くなり
無駄なスペースが出来るので好ましくない。短すぎる
と、カートリッジに供給された空気が有効に貫通穴へ導
かれず、横方向に散逸するため好ましくない。In the present invention, the skirt 6 is preferably fixed to the outer circumference of the hollow fiber membrane bundle by protruding from the end surface of the hollow fiber membrane. The length protruding from the end face depends on the diameter of the cartridge, the amount of air supplied, and the diameter and number of the through holes, but it is preferably 5 mm to 200 mm in order to prevent the air from being dissipated. If it is too long, the total length of the cartridge becomes long and a useless space is created, which is not preferable. If it is too short, the air supplied to the cartridge is not effectively guided to the through hole and is dissipated laterally, which is not preferable.
【００１７】本発明におけるスカートに設ける気体導入
口８の位置は、中空糸膜の端面より下であればどこでも
よい。またこの気体導入口８は、パイプ状にスカートか
ら突き出していてもよく、あるいは、単に穴が開いてい
るだけでもよい。気体導入口８には、気体導入管１１が
接続され、気体１２がスカート内に供給される。気体導
入口８がパイプ状にスカートから外部に突き出している
場合は、気体導入管１１は、気体導入口８に接続固定さ
れていてもよい。あるいはスカートの気体導入口８が、
スカートに単に穴を開けた貫通穴の場合は、その穴径と
同じか、あるいは穴径より小さい気体導入管１１が該気
体導入口を通っていても良く、この場合は、スカートか
ら気体導入管１１が抜けないよう、留め具１４を使用す
るのが好ましい。The gas introduction port 8 provided in the skirt in the present invention may be located anywhere below the end face of the hollow fiber membrane. Further, the gas introduction port 8 may be projected like a pipe from the skirt, or may be simply a hole. A gas introduction pipe 11 is connected to the gas introduction port 8 and a gas 12 is supplied into the skirt. When the gas introduction port 8 projects outward from the skirt in a pipe shape, the gas introduction pipe 11 may be connected and fixed to the gas introduction port 8. Or the gas inlet 8 of the skirt
In the case of a through hole in which the skirt is simply perforated, a gas introduction pipe 11 having the same or smaller diameter as the hole may pass through the gas introduction port. In this case, the gas introduction pipe is introduced from the skirt. A fastener 14 is preferably used to prevent the 11 from slipping out.
【００１８】多数本の中空糸膜カートリッジを設置する
場合は、気体導入管の数を減らす目的で、図２に例示し
たように、複数個の中空糸膜カートリッジのスカートを
気体導入口において連結してもよい。気体導入管１１の
素材は、特に限定されないが、熱可塑性樹脂やステンレ
ス鋼が好ましく用いられる。本発明の中空糸膜カートリ
ッジの製造方法は、一方の端部中空部を目止めした中空
糸膜束を、カートリッジヘッド７に挿入し、接着剤を流
し込んで中空糸膜同士、及び、カートリッジヘッド７を
液密的に接着固定し、中空糸膜と接着固定層を同時に切
断して、中空糸膜端面を開口させる。他方の中空糸膜端
部は、中空部を目止めせずにスカート６内に挿入し、さ
らに中空糸膜束内に貫通穴５を形成するための所定の
棒、又 は、板をセットする。そして、スカート６内に
接着剤を流し込んで中空糸膜同士、及び、スカート６を
接着固定する。この時、中空糸膜端部の中空部は、同時
に接着剤により封止される。その後、貫通穴５形成用の
棒、又は、板を、接着固定層から取り出して貫通穴５を
形成する。また、中空糸膜束内に貫通穴５形成用の棒、
又は、板をセットして接着固定し、貫通穴５形成用治具
を取り出した後で、接着固定層の外周にスカートを接
着、又は、溶接により固定しても良い。When a large number of hollow fiber membrane cartridges are installed, the skirts of a plurality of hollow fiber membrane cartridges are connected at the gas introduction port as shown in FIG. 2 in order to reduce the number of gas introduction tubes. May be. The material of the gas introduction pipe 11 is not particularly limited, but a thermoplastic resin or stainless steel is preferably used. According to the method for manufacturing a hollow fiber membrane cartridge of the present invention, a hollow fiber membrane bundle in which one end hollow portion is sealed is inserted into the cartridge head 7, and an adhesive is poured to the hollow fiber membranes, and the cartridge head 7 Is liquid-tightly adhered and fixed, and the hollow fiber membrane and the adhesive fixation layer are simultaneously cut to open the end surface of the hollow fiber membrane. The other end of the hollow fiber membrane is inserted into the skirt 6 without blocking the hollow portion, and a predetermined rod or plate for forming the through hole 5 in the hollow fiber membrane bundle is set. . Then, an adhesive is poured into the skirt 6 to bond and fix the hollow fiber membranes and the skirt 6 together. At this time, the hollow portion at the end of the hollow fiber membrane is simultaneously sealed with an adhesive. Then, the rod or plate for forming the through hole 5 is taken out from the adhesive fixing layer to form the through hole 5. In addition, a rod for forming the through hole 5 in the hollow fiber membrane bundle,
Alternatively, the plate may be set and adhered and fixed, and the jig for forming the through hole 5 may be taken out, and then the skirt may be adhered or fixed by welding to the outer periphery of the adhesive fixing layer.
【００１９】以下、本発明に係る中空糸膜カートリッジ
を用いた浸漬型濾過装置の例（図１）を説明する。図１
において、１は原液を供給して濾過を行う浸漬型濾過装
置であり、例えば、河川水、湖沼水、地下水、海水、あ
るいは、生活排水、工場排水等を原水として大量に除濁
・除菌する水処理に適用可能である。浸漬型濾過装置１
の浸漬槽２には、原水供給口２ａが設けられ、原水が供
給される。供給される原水は、濾過に伴い減少した原水
を、図示されていないレベル計等により液面の低下を検
知し、供給される。An example (FIG. 1) of an immersion type filtration device using the hollow fiber membrane cartridge according to the present invention will be described below. Figure 1
In the above, 1 is an immersion type filtration device that supplies a stock solution and performs filtration. For example, river water, lake water, groundwater, seawater, or domestic wastewater, factory wastewater, etc. are used as raw water for large-scale sterilization and sterilization. It is applicable to water treatment. Immersion type filtration device 1
The immersion tank 2 is provided with a raw water supply port 2a to supply raw water. The supplied raw water is supplied by detecting a decrease in the liquid level of the raw water reduced by the filtration with a level meter (not shown) or the like.
【００２０】浸漬槽２の内部には、中空糸膜カートリッ
ジ３の一端が支持されて（図示されていない）懸垂して
いる。上記構成において、浸漬型濾過装置１による濾過
運転時には、図示されていないポンプにより浸漬槽２の
下部に設けられた供給水入口２aから供給された原水
は、浸漬槽２に充満すると共に、中空糸膜束の端部外周
に設けられたスカート６から接着固定層１３の貫通穴５
を通って各中空糸膜４の外周側面に導かれる。Inside the dipping tank 2, one end of the hollow fiber membrane cartridge 3 is supported and suspended (not shown). In the above configuration, during the filtration operation by the submerged filtration device 1, the raw water supplied from the feed water inlet 2a provided in the lower part of the submerged tank 2 by the pump (not shown) fills the submerged tank 2 and the hollow fiber. From the skirt 6 provided on the outer periphery of the end of the film bundle to the through hole 5 of the adhesive fixing layer 13.
And is guided to the outer peripheral side surface of each hollow fiber membrane 4.
【００２１】各中空糸膜４の外周部近傍の原水は、図示
されていない吸引ポンプにより中空糸膜４の外部から内
部に陰圧濾過され、その濾水は中空糸膜４の開口された
上端部から処理水出口９を通って外部に取り出される。
中空糸膜４を濾水により逆洗する場合は、処理水出口９
から濾水を供給して逆流させ、中空糸膜４外壁に蓄積し
た懸濁物質（非透過物）を排除して排水ノズル２ａから
浸漬タンク２の外部に排出する。Raw water in the vicinity of the outer peripheral portion of each hollow fiber membrane 4 is negatively pressure-filtered from the outside to the inside of the hollow fiber membrane 4 by a suction pump (not shown), and the drained water is the upper end of the hollow fiber membrane 4 which is opened. The water is taken out from the part through the treated water outlet 9.
When the hollow fiber membrane 4 is backwashed with filtered water, the treated water outlet 9
The filtered water is supplied from the above to make it flow backward, the suspended substance (non-permeate) accumulated on the outer wall of the hollow fiber membrane 4 is removed, and the suspended substance is discharged to the outside of the immersion tank 2 from the drainage nozzle 2a.
【００２２】また、中空糸膜４をエアーバブリングする
場合は、浸漬槽２に原水を満たした状態で、気体導入管
１１、気体導入口８を通して気体１２をスカートに供給
する。スカート６に供給された空気は、接着固定層１３
の貫通穴５を通過して各中空糸膜４の外周側面に導か
れ、各中空糸膜４束内の水を攪拌すると共に各中空糸膜
４を振動させて中空糸膜４の表面に付着している懸濁物
を剥離する。上記エアーバブリング運転では、例えば、
まず、浸漬槽２内に原水を張った状態で、空気又は窒素
ガスを供給する。そして、エアーバブリング後、前述し
た逆洗運転を行い、処理水出口９から供給された濾水に
よって、上述のように剥離した懸濁物質を押し流す。剥
離した懸濁物質を含む濾水は、排水ノズル２ｂから浸漬
槽２の外部に排出され、図示しない廃液タンクに収容さ
れる。なお、エアーバブリング運転は、前述の逆洗運転
と同時に行ってもよい。When the hollow fiber membrane 4 is subjected to air bubbling, the gas 12 is supplied to the skirt through the gas introduction pipe 11 and the gas introduction port 8 while the immersion tank 2 is filled with raw water. The air supplied to the skirt 6 is the adhesive fixing layer 13
Is guided to the outer peripheral side surface of each hollow fiber membrane 4 through the through hole 5 of the hollow fiber membrane 4 and agitates the water in each bundle of hollow fiber membranes 4 while vibrating each hollow fiber membrane 4 and adhering to the surface of the hollow fiber membranes 4. Peel off the suspended suspension. In the air bubbling operation, for example,
First, air or nitrogen gas is supplied while the raw water is filled in the immersion tank 2. Then, after the air bubbling, the above-mentioned backwashing operation is performed, and the suspended substance separated as described above is washed away by the filtered water supplied from the treated water outlet 9. The filtered water containing the separated suspended matter is discharged from the drainage nozzle 2b to the outside of the dipping tank 2 and stored in a waste liquid tank (not shown). The air bubbling operation may be performed at the same time as the above backwash operation.
【００２３】[0023]
【発明の効果】本発明の中空糸膜カートリッジは、原水
が中空糸膜カートリッジ下部から導入できると同時に、
側面にエアーバブリング用の気体導入口を有するスカー
トを用いることにより、散気穴が閉塞せず、かつ原水が
中空糸膜カートリッジ下部からも導入されるため、長期
に亘って高い透過性能が安定して得られる。The hollow fiber membrane cartridge of the present invention allows raw water to be introduced from the lower portion of the hollow fiber membrane cartridge and
By using a skirt that has a gas introduction port for air bubbling on the side surface, the diffusion holes are not blocked and raw water is introduced from the lower part of the hollow fiber membrane cartridge, so high permeation performance is stable over a long period of time. Obtained.
【図１】浸漬型濾過装置に設置された、本発明に係わる
中空糸膜カートリッジの実施形態の一例を示す断面説明
図である。FIG. 1 is a cross-sectional explanatory view showing an example of an embodiment of a hollow fiber membrane cartridge according to the present invention installed in a submerged filtration device.
【図２】複数個の中空糸膜カートリッジのスカートが気
体導入口において連結している一例を示す図である。FIG. 2 is a view showing an example in which the skirts of a plurality of hollow fiber membrane cartridges are connected at a gas introduction port.
１ 浸漬型濾過装置 ２ 浸漬槽 ２ａ 原水供給口 ２ｂ 排出ノズル ３ 中空糸膜カートリッジ ４ 中空糸膜 ５ 貫通穴 ６ スカート部 ７ カートリッジヘッド ８ 気体導入口 ９ 処理水出口 １０ 接着固定層 １１ 気体導入管 １２ 気体 １３ 接着固定層 １４ 気体導入管留め具 1 Immersion type filter 2 immersion tank 2a Raw water supply port 2b discharge nozzle 3 hollow fiber membrane cartridge 4 hollow fiber membranes 5 through holes 6 Skirt 7 cartridge head 8 gas inlet 9 Treated water outlet 10 Adhesive fixing layer 11 Gas introduction tube 12 gas 13 Adhesive fixing layer 14 Gas introduction tube fastener
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 4D006 GA03 GA06 GA07 HA03 HA16 HA19 HA91 HA93 HA95 JA03A JA08A JA16A JA31A JA38Z JA43Z JB06 KA12 KA43 KA46 KC03 KC13 KC14 KE21P MA01 MB02 MC11 MC18 MC22 MC23 MC29 MC30 MC39 MC45 MC47 MC54 MC58 MC62 PA01 PB03 PB04 PB05 PB08 PC62 ─────────────────────────────────────────────────── ─── Continued front page F-term (reference) 4D006 GA03 GA06 GA07 HA03 HA16 HA19 HA91 HA93 HA95 JA03A JA08A JA16A JA31A JA38Z JA43Z JB06 KA12 KA43 KA46 KC03 KC13 KC14 KE21P MA01 MB02 MC11 MC18 MC22 MC23 MC29 MC30 MC39 MC45 MC47 MC54 MC58 MC62 PA01 PB03 PB04 PB05 PB08 PC62
Claims (2)
着固定された中空糸膜束と、一方の端部外周に液密に接
着固定されたカートリッジヘッドと他方端部外周に液密
に接着固定されたスカートとを有し、カートリッジヘッ
ドとスカートが分離されており、カートリッジヘッド側
の中空糸膜端部の中空部は開口し、スカート側の中空糸
膜端部の中空部は封止され、かつスカート側接着固定層
に複数の貫通穴が設けられている中空糸膜カートリッジ
において、該スカートの側面に気体導入口を有すること
を特徴とする中空糸膜カートリッジ。1. A hollow fiber membrane bundle comprising a plurality of hollow fiber membranes, both ends of which are adhered and fixed, a cartridge head which is liquid-tightly fixed on one end outer periphery, and a liquid-tightness on the other end outer periphery. The cartridge head and the skirt are separated from each other, the hollow portion at the end of the hollow fiber membrane on the cartridge head side is open, and the hollow portion at the end of the hollow fiber membrane on the skirt side is sealed. A hollow fiber membrane cartridge that is stopped and has a plurality of through holes in the adhesive fixing layer on the skirt side, wherein the side surface of the skirt has a gas introduction port.
ートの気体導入口において連結されていることを特徴と
する、請求項１記載の中空糸膜カートリッジ。2. The hollow fiber membrane cartridge according to claim 1, wherein a plurality of hollow fiber membrane cartridges are connected at a gas inlet of each skirt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001210229A JP2003024751A (en) | 2001-07-11 | 2001-07-11 | Hollow fiber membrane cartridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001210229A JP2003024751A (en) | 2001-07-11 | 2001-07-11 | Hollow fiber membrane cartridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003024751A true JP2003024751A (en) | 2003-01-28 |
Family
ID=19045726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001210229A Pending JP2003024751A (en) | 2001-07-11 | 2001-07-11 | Hollow fiber membrane cartridge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003024751A (en) |
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