JPH09220446A - External pressure type hollow yarn membrane module - Google Patents
External pressure type hollow yarn membrane moduleInfo
- Publication number
- JPH09220446A JPH09220446A JP2810996A JP2810996A JPH09220446A JP H09220446 A JPH09220446 A JP H09220446A JP 2810996 A JP2810996 A JP 2810996A JP 2810996 A JP2810996 A JP 2810996A JP H09220446 A JPH09220446 A JP H09220446A
- Authority
- JP
- Japan
- Prior art keywords
- hollow fiber
- fiber membrane
- hollow yarn
- membrane
- module
- 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
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、種々の分野に使用
される中空糸膜モジュール、特に水処理分野に使用され
る外圧式中空糸膜モジュールに関する。TECHNICAL FIELD The present invention relates to a hollow fiber membrane module used in various fields, and more particularly to an external pressure type hollow fiber membrane module used in the field of water treatment.
【０００２】[0002]
【従来の技術】中空糸膜モジュールは、単位体積当たり
の膜面積が大きく確保可能であることから、多数の流体
処理分野、例えば、逆浸透膜によるカン水や海水の脱
塩、超純水の１次純水処理、ナノフィルターによる農薬
や多糖類などの低分子有機物の除去、限外濾過膜による
酵素の濃縮・脱塩、注射用水の製造、電着塗料の回収、
超純水のファイナルフィルトレーション、廃水処理、河
川水・湖沼水・伏流水の除濁、精密濾過膜による薬品精
製、除菌、除濁、ガス分離膜による酸素分離、窒素分
離、水素分離、炭酸ガス分離等に適用されている。2. Description of the Related Art Since a hollow fiber membrane module can secure a large membrane area per unit volume, it can be used in many fluid treatment fields such as desalination of canned water and seawater by reverse osmosis membrane, and ultrapure water. Primary pure water treatment, removal of low molecular weight organic substances such as pesticides and polysaccharides by nanofilter, concentration and desalting of enzyme by ultrafiltration membrane, production of water for injection, collection of electrodeposition paint,
Final filtration of ultrapure water, wastewater treatment, turbidity of river water / lake water / underflow water, chemical purification by microfiltration membrane, sterilization, turbidity, oxygen separation by gas separation membrane, nitrogen separation, hydrogen separation, It is used for carbon dioxide separation.
【０００３】中空糸膜モジュールは、通常、長さ２００
〜３０００ｍｍ、膜外径０．１〜５ｍｍの中空糸膜を数
百〜数万本束ねてモジュールケースに収納し、両側端部
を樹脂で接着固定したのち端部を切断し、中空糸膜の中
空部を開口させる事により製造されている。さらに、複
数の原水供給口が、中空糸膜束内に、中空糸膜に対して
平行に設けられている外圧式中空糸膜モジュールは、懸
濁物質の排出性に優れた膜モジュールとして知られてい
る。この原水供給口のみが端面に開口した膜モジュール
は、中空糸膜束の原水供給側端部に原水供給のための導
入管を埋設し、かつ、中空糸膜の中空部に樹脂が注入さ
れる様に接着固定したのち、束端部を切断することによ
り作製することができる。Hollow fiber membrane modules typically have a length of 200
˜3000 mm, outer diameter 0.1 to 5 mm, and several hundred to tens of thousands of hollow fiber membranes are bundled and housed in a module case. Both ends are adhesively fixed and then the ends are cut to remove the hollow fiber membranes. It is manufactured by opening the hollow part. Furthermore, an external pressure type hollow fiber membrane module in which a plurality of raw water supply ports are provided in a hollow fiber membrane bundle in parallel with the hollow fiber membrane is known as a membrane module having excellent discharge properties of suspended matter. ing. In this membrane module having only the raw water supply port opened on the end face, an inlet pipe for raw water supply is buried at the raw water supply side end of the hollow fiber membrane bundle, and resin is injected into the hollow portion of the hollow fiber membrane. After adhesively fixing in this manner, the bundle ends can be cut to produce the same.
【０００４】また、通常、懸濁物質を含む原水の濾過安
定性を得るために、クロスフロー濾過、逆洗、エアレー
ションフラッシング等の濾過方法や物理洗浄を行うこと
によって、膜モジュール内の懸濁物質の蓄積を防止して
いる。モジュール内に蓄積した懸濁物質を、より効率的
に排出するため、モジュールを縦に設置した場合におい
ては、クロスフローでの濾過は、下部の原水供給口か
ら懸濁物質を含んだ原水を供給し、上部側面に設けられ
た濃縮水排出口から濃縮水を排出する方法、エアレー
ションフラッシングによる洗浄は、下部の原水供給口か
ら圧縮空気等のガスを混入した原水を供給し、空気・水
混合流れにより膜を揺り動かし、懸濁物質を上部側面に
設けられた濃縮水排出口から排出する方法、逆洗の場
合、上部の濾水取り出し口から濾水による加圧を行い、
膜外表面に付着した懸濁物質を逆洗排水と共にモジュー
ル下部の原水供給口、あるいはモジュール上部側面に設
けられた濃縮水排出口、およびその両側から排出する方
法が、それぞれ懸濁物質の排出性に優れている。In order to obtain the filtration stability of raw water containing suspended solids, the suspended solids in the membrane module are usually subjected to filtration methods such as cross-flow filtration, backwash, aeration flushing and the like, and physical washing. To prevent the accumulation of. In order to discharge the suspended solids accumulated in the module more efficiently, when the module is installed vertically, cross-flow filtration supplies raw water containing suspended solids from the raw water supply port at the bottom. The method of discharging concentrated water from the concentrated water outlet provided on the upper side surface, and the cleaning by aeration flushing are performed by supplying raw water mixed with gas such as compressed air from the raw water supply port at the bottom, and mixing air and water. By shaking the membrane with the method of discharging the suspended solids from the concentrated water outlet provided on the upper side surface, in the case of backwashing, pressurization with filtered water is performed from the upper filtered water outlet,
The method of discharging the suspended solids adhering to the outer surface of the membrane from the raw water supply port at the bottom of the module or the concentrated water discharge port at the upper side of the module along with the backwash drainage and both sides is Is excellent.
【０００５】しかし、クロスフロー濾過、エアレー
ションフラッシング洗浄による中空糸膜両側端部付近で
の、中空糸膜繊維方向に対し垂直に働く揺れ動き、およ
び、逆洗の排出水を原水供給口あるいは濃縮水排出ノ
ズルから排出する時の液流れによる中空糸膜の引き込ま
れ、によって、接着固定界面付近での中空糸膜の損傷を
生ずる場合がある。However, the cross-flow filtration and the aeration flushing cleaning are performed in the vicinity of both end portions of the hollow fiber membrane so as to swing vertically to the fiber direction of the hollow fiber membrane, and the backwash discharge water is discharged through the raw water supply port or the concentrated water discharge. When the hollow fiber membrane is drawn in by the liquid flow when it is discharged from the nozzle, the hollow fiber membrane may be damaged near the adhesive fixing interface.
【０００６】中空糸膜の繊維方向に対し、垂直に働く剪
断力による中空糸膜接着固定界面での損傷を防止する手
段としては、（１）膜の接着固定界面付近に、整流筒を
設置する方法、（２）膜の接着固定界面に、ゴム状弾性
を有する高分子材料層を設ける方法、（３）中空糸膜束
に高分子材料製のネットを巻く方法、（４）中空糸膜の
長さ方向の中央部付近に、濃縮水排出、あるいは原水供
給のためのノズルを設ける方法、等が知られている。As means for preventing damage at the hollow fiber membrane adhesive fixing interface due to shearing force acting perpendicularly to the fiber direction of the hollow fiber membrane, (1) a rectifying tube is installed near the membrane adhesive fixing interface. A method, (2) a method of providing a polymer material layer having rubber-like elasticity on the adhesive fixing interface of the membrane, (3) a method of winding a net made of a polymer material around the hollow fiber membrane bundle, and (4) a hollow fiber membrane There is known a method of providing a nozzle for discharging concentrated water or supplying raw water near the central portion in the length direction.
【０００７】しかし、複数の原水供給口が、中空糸膜束
内に中空糸膜に対して平行に設けられている外圧式中空
糸膜モジュールにおいては、（１）の方法は、濃縮水の
排出に伴う中空糸膜の引き込まれに対する改善効果は大
きいが、中空糸膜の揺れに対する改善とはなり得ない。
（２）の方法は逆に、中空糸膜の揺れに対する改善効果
に優れているが、濃縮水の排出に伴う中空糸膜の引き込
まれに対する改善効果はあまり大きくない。また（３）
および（４）の方法は、濃縮水の排出に伴う中空糸膜の
引き込まれと中空糸膜の揺れに対する改善効果はある
が、中空糸膜束内への懸濁物質の蓄積を促進し、実際に
使用するには高度な前処理を必要とする。However, in the external pressure type hollow fiber membrane module in which a plurality of raw water supply ports are provided in the hollow fiber membrane bundle in parallel with the hollow fiber membrane, the method (1) is for discharging concentrated water. The effect of improving the hollow fiber membrane being pulled in is great, but it cannot be the effect of improving the sway of the hollow fiber membrane.
On the contrary, the method (2) is excellent in the improvement effect on the swing of the hollow fiber membrane, but the improvement effect on the pulling in of the hollow fiber membrane due to the discharge of the concentrated water is not so large. Also (3)
The methods of (4) and (4) have the effect of improving the pulling of the hollow fiber membrane and the swaying of the hollow fiber membrane due to the discharge of concentrated water, but accelerate the accumulation of suspended substances in the hollow fiber membrane bundle, and Requires advanced pretreatment for use.
【０００８】[0008]
【発明が解決しようとする課題】本発明は、物理洗浄排
水の排出性に優れ、懸濁物質の蓄積が少なく、かつ、中
空糸膜の接着固定界面付近での中空糸膜の損傷が生じに
くい外圧式中空糸膜モジュールを提供することを目的と
するものである。DISCLOSURE OF THE INVENTION According to the present invention, the discharge of physical cleaning wastewater is excellent, the accumulation of suspended substances is small, and the hollow fiber membrane is less likely to be damaged in the vicinity of the adhesive fixing interface of the hollow fiber membrane. An object is to provide an external pressure type hollow fiber membrane module.
【０００９】[0009]
【課題を解決するための手段】本発明は、多数本の中空
糸膜からなる束の両端部が樹脂隔壁によりケースに接着
固定された外圧式中空糸膜モジュールにおいて、一方の
樹脂隔壁自体にあけられた貫通孔からなる原水の供給口
と、原水供給口とは反対側の束端部周囲に配置された整
流筒と、両端の樹脂隔壁と中空糸膜との接着固定部内側
端面付近の膜周囲を覆うゴム状弾性の高分子材料層とを
有することを特徴とする外圧式中空糸膜モジュールに関
する。SUMMARY OF THE INVENTION The present invention provides an external pressure type hollow fiber membrane module in which both ends of a bundle of a large number of hollow fiber membranes are adhesively fixed to a case by resin partition walls, and one resin partition wall itself is opened. A raw water supply port consisting of a through hole, a rectifying cylinder arranged around the bundle end opposite to the raw water supply port, a resin partition wall at both ends and a hollow fiber membrane, and a membrane near the inner end face of the fixing part An external pressure type hollow fiber membrane module having a rubber-like elastic polymer material layer covering the periphery thereof.
【００１０】このような構成にすることにより、クロス
フロー濾過およびエアレーションフラッシング洗浄の際
の膜の揺れによって、樹脂隔壁と中空糸膜の接着界面付
近に集中して発生する剪断応力を分散・緩和し、かつ、
逆洗水排出時の膜引き込まれによる、中空糸膜の接着界
面付近での曲がり角度を緩和することができる。この発
明のモジュールには、外郭ハウジングに収納して使用さ
れる、いわゆるカートリッジタイプのものも含まれる。With such a structure, the shear stress generated in the vicinity of the adhesive interface between the resin partition wall and the hollow fiber membrane due to the shaking of the membrane during the cross flow filtration and the aeration flushing washing is dispersed and relaxed. ,And,
It is possible to reduce the bending angle near the bonding interface of the hollow fiber membrane due to the membrane being drawn in when the backwash water is discharged. The module of the present invention includes a so-called cartridge type that is used by being housed in an outer housing.
【００１１】本発明で使用される中空糸膜は、流体処理
に使用するという以外特に限定されないが、素材として
は、例えば、ポリアクリロニトリル、ポリスルホン、ポ
リエーテルケトン類、ポリエーテルスルホン、ポリフェ
ニレンサルファイド、ポリフッ化ビニリデン、セルロー
ス類、ポリビニルアルコール、ポリアミド、ポリイミ
ド、スルホン化ポリフェニレンエーテル、ポリエチレ
ン、ポリプロピレン、ポリブテン、ポリ４−メチルペン
テン、ポリオルガノシロキサン、ポリテトラフルオロエ
チレン、エチレン−テトラフルオロエチレン共重合体等
の単独あるいは混合さらには複合化による膜が挙げられ
る。また、膜の種類としては、逆浸透膜、ナノフィルタ
ー、限外濾過膜、精密濾過膜、脱気膜が挙げられる。さ
らに、中空糸膜の形状としては、内径５０〜３０００μ
ｍで内／外径比が０．３〜０．８の範囲の膜が使用でき
る。The hollow fiber membrane used in the present invention is not particularly limited as long as it is used for fluid treatment. Examples of the material include polyacrylonitrile, polysulfone, polyether ketones, polyether sulfone, polyphenylene sulfide and polyfluoride. Vinylidene chloride, celluloses, polyvinyl alcohol, polyamide, polyimide, sulfonated polyphenylene ether, polyethylene, polypropylene, polybutene, poly-4-methylpentene, polyorganosiloxane, polytetrafluoroethylene, ethylene-tetrafluoroethylene copolymer, etc. Alternatively, a membrane formed by mixing or compounding may be used. The types of membranes include reverse osmosis membranes, nanofilters, ultrafiltration membranes, microfiltration membranes and degassing membranes. Further, the shape of the hollow fiber membrane has an inner diameter of 50 to 3000 μm.
Membranes having an inner / outer diameter ratio of 0.3 to 0.8 can be used.
【００１２】本発明で使用されるモジュールケースは、
直径が３０ｍｍ〜８００ｍｍで、長さが３００ｍｍ〜３
０００ｍｍの範囲から選ばれ、材質としては、ポリテト
ラフルオロエチレン、テトラフルオロエチレン−ヘキサ
フルオロプロピレン共重合体樹脂、エチレン−テトラフ
ルオロエチレン共重合体樹脂、ポリフッ化ビニリデン等
のフッ素樹脂、ポリエチレン、ポリプロピレン、ポリブ
テン等のポリオレフィン、ポリ塩化ビニル、ポリエステ
ル、ポリスルホン、ポリエーテルスルホン、ポリフェニ
レンエーテル等が使用可能である。The module case used in the present invention is
Diameter is 30mm-800mm, length is 300mm-3
The material selected from the range of 000 mm is polytetrafluoroethylene, tetrafluoroethylene-hexafluoropropylene copolymer resin, ethylene-tetrafluoroethylene copolymer resin, fluororesin such as polyvinylidene fluoride, polyethylene, polypropylene, Polyolefin such as polybutene, polyvinyl chloride, polyester, polysulfone, polyether sulfone, polyphenylene ether and the like can be used.
【００１３】モジュールケースと中空糸膜とを液密的に
接着固定するには、エポキシ樹脂、ウレタン樹脂、エポ
キシアクリレート樹脂等の熱硬化性の高分子材料が使用
可能である。液密に固定することにより樹脂隔壁が形成
される。接着方法としては、遠心接着法などの公知の方
法が用いられる。接着剤の硬化収縮や強度が改善される
場合もあるので、上記接着剤中にさらにガラスファイバ
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。In order to liquid-tightly bond and fix the module case and the hollow fiber membrane, a thermosetting polymer material such as epoxy resin, urethane resin or epoxy acrylate resin can be used. The resin partition wall is formed by fixing it in a liquid-tight manner. As the bonding method, a known method such as a centrifugal bonding method is used. Since the curing shrinkage and strength of the adhesive may be improved in some cases, the adhesive may further contain a fibrous material such as glass fiber or carbon fiber, or a fine powder such as carbon black, alumina or silica.
【００１４】この発明に使用される整流筒としては、モ
ジュールケース内に配設可能な、主として円筒形状を有
するものであれば特に限定されないが、ケースに設けら
れた濃縮水排出ノズルに面する部分を除いた側面に、多
数の開口を有したものが液流れを均一にできるので好ま
しい。図２および図３に、整流筒の好ましい形状の例を
示す。整流筒の材質としては、ポリテトラフルオロエチ
レン、テトラフルオロエチレン−ヘキサフルオロプロピ
レン共重合体樹脂、エチレン−テトラフルオロエチレン
共重合体樹脂、ポリフッ化ビニリデン等のフッ素樹脂、
ポリエチレン、ポリプロピレン、ポリブテン等のポリオ
レフィン、ポリ塩化ビニル、ポリエステル、ポリスルホ
ン、ポリエーテルスルホン、ポリフェニレンエーテル等
が挙げられる。The rectifying cylinder used in the present invention is not particularly limited as long as it has a mainly cylindrical shape and can be arranged in the module case, but the portion facing the concentrated water discharge nozzle provided in the case. It is preferable to have a large number of openings on the side surface except for the reason that the liquid flow can be made uniform. 2 and 3 show examples of preferable shapes of the flow straightening cylinder. As the material of the flow straightening cylinder, polytetrafluoroethylene, tetrafluoroethylene-hexafluoropropylene copolymer resin, ethylene-tetrafluoroethylene copolymer resin, fluororesin such as polyvinylidene fluoride,
Examples thereof include polyolefins such as polyethylene, polypropylene and polybutene, polyvinyl chloride, polyester, polysulfone, polyether sulfone and polyphenylene ether.
【００１５】整流筒は、モジュールの原水供給口が設け
られた側とは反対側の、濃縮水排出口に面した中空糸膜
束周囲に配設されるが、さらに原水供給口側の膜周囲に
も配設することができる。配設する方法は、たとえばモ
ジュールケースと中空糸膜を接着固定する際に、整流筒
も同時に固定する方法などが挙げられる。本発明で使用
されるゴム状弾性を有する高分子材料層は、中空糸膜接
着固定界面付近を補強するためのもので、高分子材料と
してはたとえば縮合型あるいは付加型のシリコーンゴム
が用いられる。上記シリコーンゴムは、硬化後のＪＩＳ
−Ｋ６２５３記載のタイプＡデュロメータ硬度が、５０
未満のものが好ましい。硬度が高いと中空糸膜の曲がり
を緩和できず、接着固定界面ではなく補強層界面で中空
糸膜が破壊されてしまい、所期の効果が得られない。The flow straightening cylinder is arranged around the hollow fiber membrane bundle facing the concentrated water discharge port on the side opposite to the side where the raw water supply port of the module is provided. Can also be installed. Examples of the disposing method include a method of fixing the rectifying cylinder at the same time when the module case and the hollow fiber membrane are adhered and fixed. The polymer material layer having rubber-like elasticity used in the present invention is for reinforcing the vicinity of the hollow fiber membrane adhesive fixing interface, and as the polymer material, for example, condensation type or addition type silicone rubber is used. The above silicone rubber is JIS cured
-Type A durometer hardness described in K6253 is 50
Less than is preferred. If the hardness is high, the bending of the hollow fiber membrane cannot be alleviated, and the hollow fiber membrane is broken at the reinforcing layer interface instead of the adhesive fixing interface, and the desired effect cannot be obtained.
【００１６】モジュールの原水供給口は、樹脂隔壁自体
にあけられた貫通孔からなる。開口の大きさは、中空糸
膜の膜径にもよるが、それぞれの相当直径が２〜３０ｍ
ｍの範囲から選ばれる。開口の形状は、三角形、四角
形、六角形等の多角形、円形、楕円形、扇形、Ｃ字形ま
たは星形などから選ばれる。また、その開口数は、モジ
ュールの断面積にもよるが、２〜３０００個開口させる
ことができ、開口の位置は、樹脂隔壁面のたとえば多重
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である。The raw water supply port of the module comprises a through hole formed in the resin partition wall itself. The size of the opening depends on the diameter of the hollow fiber membrane, but each equivalent diameter is 2 to 30 m.
m. The shape of the opening 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 openings depends on the cross-sectional area of the module, but it is possible to open 2 to 3000, and the positions of the openings are, for example, the intersections of the multiple circles and the radial lines on the resin partition wall surface, the intersections of the lattices, or For example, the positions of the vertices of many equilateral triangles.
【００１７】[0017]
【発明の実施の形態】以下、実施例により、本発明をさ
らに詳細に説明する。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail with reference to Examples.
【００１８】[0018]
【実施例１】旭化成工業（株）社製のポリアクリロニト
リル中空糸限外濾過膜（内径０．８ｍｍ、長さ１２００
ｍｍ、公称分画分子量１３０００）１８００本を束ね、
その膜束を外径８９ｍｍ、長さ１０００ｍｍの透明ポリ
スルホン製のモジュールケースに収納した。モジュール
ケースの長さ方向に対し垂直に設けられたケース両側の
ノズル部分の内側には、図３に示す形状（長さ５０ｍ
ｍ、孔数２００）のポリプロピレン製の整流筒を、開口
のない部分がノズルに対向するよう配設した。つぎに、
束の片側に長さ１５０ｍｍ、外径１２ｍｍのポリエチレ
ン製のチューブ状物を５本、図１に示した様な配置に埋
設し、エポキシ樹脂を用いて、遠心接着法により、中空
糸膜束とモジュールケース、整流筒、およびチューブ状
物を接着した。Example 1 Polyacrylonitrile hollow fiber ultrafiltration membrane manufactured by Asahi Kasei Corporation (inner diameter 0.8 mm, length 1200)
mm, nominal cut-off molecular weight 13000) 1800 bundles,
The membrane bundle was stored in a module case made of transparent polysulfone having an outer diameter of 89 mm and a length of 1000 mm. Inside the nozzle portions on both sides of the module that are provided perpendicular to the length direction of the module case, the shape shown in FIG.
A polypropylene straightening cylinder having a diameter of m and a number of holes of 200) was arranged such that a portion having no opening faces the nozzle. Next,
Five polyethylene tube-like objects each having a length of 150 mm and an outer diameter of 12 mm were embedded in one side of the bundle in the arrangement as shown in FIG. 1, and a hollow fiber membrane bundle was formed by a centrifugal adhesion method using an epoxy resin. The module case, the straightening cylinder, and the tubular material were bonded.
【００１９】エポキシ樹脂が充分硬化した後、モジュー
ルケース両側の前記ノズルより熱硬化性のシリコーンゴ
ムを注入し、硬化させて厚み１０ｍｍの高分子材料層を
形成した。使用したシリコーンゴムの硬化後の硬度を、
ＪＩＳ−Ｋ６２５３記載のタイプＡデュロメータ硬度計
により測定したところ、４１であった。シリコーンゴム
が充分硬化後、一方の側は、中空糸膜の中空部を開口さ
せるために、他方の側は、中空糸膜はエポキシ樹脂によ
り閉塞された状態のままで、かつ原水供給口を開口させ
るために、エポキシ樹脂の両側端部を一部切断し、５本
のポリエチレン製のチューブ状物を取り除いた。After the epoxy resin was sufficiently cured, thermosetting silicone rubber was injected from the nozzles on both sides of the module case and cured to form a polymer material layer having a thickness of 10 mm. The hardness of the used silicone rubber after curing,
It was 41 when measured by the type A durometer hardness meter described in JIS-K6253. After the silicone rubber has been sufficiently cured, one side opens the hollow part of the hollow fiber membrane, and the other side opens the raw water supply port while the hollow fiber membrane remains closed with the epoxy resin. For this purpose, both end portions of the epoxy resin were partially cut, and five polyethylene tubes were removed.
【００２０】以上のようにして製作した外圧式中空糸膜
モジュールを用いて、濁度２〜２０の河川水を原料水と
して用い、供給圧力１２０ＫＰａでの濾過５５秒、供給
圧力２００ＫＰａでの逆洗５秒、流量３ｍ3 ／Ｈｒ・ａ
ｔ１０５ＫＰａでのエアレーションフラッシング３０秒
の繰り返し試験を約５ヶ月行った。試験を終了後、モジ
ュールのリーク検査を行ったところ、リークの発生は確
認されなかった。また、このモジュールを解体し、モジ
ュール内の濁質成分の中空糸膜束内の蓄積状況を観察し
たところ、原水供給口で分割された各中空糸膜束の中心
部、および濃縮水排出ノズルの反対側以外は、濁質成分
の蓄積は確認されなかった。Using the external pressure type hollow fiber membrane module manufactured as described above, river water having a turbidity of 2 to 20 was used as raw material water, filtration at a supply pressure of 120 KPa for 55 seconds, and backwashing at a supply pressure of 200 KPa. 5 seconds, flow rate 3 m 3 / Hr · a
The repeated test of aeration flushing for 30 seconds at t105 KPa was performed for about 5 months. When the module was inspected for leaks after the test was completed, no leak was confirmed. In addition, when this module was disassembled and the accumulation state of turbidity components in the module inside the hollow fiber membrane bundle was observed, the central part of each hollow fiber membrane bundle divided at the raw water supply port and the concentrated water discharge nozzle Accumulation of turbid components was not confirmed except on the opposite side.
【００２１】[0021]
【比較例】整流筒を用いず、使用したシリコーンゴムの
硬化後の硬度をＪＩＳ−Ｋ６２５３記載のタイプＡデュ
ロメータ硬度計により測定した値が５８である熱硬化性
シリコーンゴムを用いた以外は、実施例１と同一の外圧
式中空糸膜モジュールを製作した。[Comparative Example] Except for using a thermosetting silicone rubber having a hardness of 58 after curing, which was measured by a type A durometer hardness meter according to JIS-K6253, without using a rectifying cylinder. The same external pressure type hollow fiber membrane module as in Example 1 was manufactured.
【００２２】この外圧式中空糸膜モジュールを用いて、
実施例１と同様の試験を行った。試験終了後、モジュー
ルのリーク検査を行ったところ、３カ所、リークの発生
が確認された。このリーク箇所を特定するためにモジュ
ールを解体し、リーク箇所を調べたところ、３カ所とも
濃縮水排出ノズル近傍のシリコーン補強界面で中空糸膜
が破断していた。濃縮水排出ノズルの位置関係から、破
断原因は濃縮水排出ノズルへの膜の引き込まれによると
推定された。また、モジュール内の濁質成分の中空糸膜
束内の蓄積状況を観察したところ、実施例と同様に、原
水供給口で分割された各中空糸膜束の中心部、および濃
縮水排出ノズルの反対側以外は、濁質成分の蓄積は確認
されなかった。Using this external pressure type hollow fiber membrane module,
The same test as in Example 1 was performed. When the module was inspected for leaks after the test, it was confirmed that there were three leaks. When the module was disassembled to identify the leak location and the leak location was examined, the hollow fiber membrane was broken at the silicone reinforced interface near the concentrated water discharge nozzle at all three locations. From the positional relationship of the concentrated water discharge nozzle, it was presumed that the cause of the breakage was the drawing of the film into the concentrated water discharge nozzle. Further, when the accumulation state of the turbid component in the hollow fiber membrane bundle in the module was observed, the central portion of each hollow fiber membrane bundle divided by the raw water supply port and the concentrated water discharge nozzle were observed as in the example. Accumulation of turbid components was not confirmed except on the opposite side.
【００２３】[0023]
【発明の効果】本発明により、物理洗浄排水の排出性に
優れ、かつ、中空糸膜接着界面付近での中空糸膜の損傷
を生じない、外圧式中空糸膜モジュールの提供が可能と
なる。Industrial Applicability According to the present invention, it is possible to provide an external pressure type hollow fiber membrane module which is excellent in drainage of physically washed waste water and which does not cause damage to the hollow fiber membrane near the hollow fiber membrane adhesion interface.
【図１】本発明の外圧式中空糸膜モジュールの、原水供
給口の配置状況の一例を示した模式図。FIG. 1 is a schematic view showing an example of the arrangement of raw water supply ports of an external pressure type hollow fiber membrane module of the present invention.
【図２】モジュール内に配置する整流筒の一例を示す斜
視図。FIG. 2 is a perspective view showing an example of a straightening cylinder arranged in a module.
【図３】モジュール内に配置する整流筒の他の例を示す
斜視図。FIG. 3 is a perspective view showing another example of the flow straightening cylinder arranged in the module.
【図４】本発明の外圧式中空糸膜モジュールの構造の一
例を示す断面模式図。FIG. 4 is a schematic sectional view showing an example of the structure of the external pressure type hollow fiber membrane module of the present invention.
１・・・原水供給口形成用チューブ状物 ２・・・中空糸膜 ３・・・モジュールケース ４・・・樹脂隔壁 ５・・・ゴム状弾性を有する高分子材料層 ６・・・濃縮水排出ノズル ７・・・原水供給口 ８・・・整流筒 1 ... Tube material for forming raw water supply port 2 ... Hollow fiber membrane 3 ... Module case 4 ... Resin partition wall 5 ... Polymer material layer having rubber-like elasticity 6 ... Concentrated water Discharge nozzle 7 ... Raw water supply port 8 ... Rectifying cylinder
Claims (1)
樹脂隔壁によりケースに接着固定された外圧式中空糸膜
モジュールにおいて、一方の樹脂隔壁自体にあけられた
貫通孔からなる原水の供給口と、原水供給口とは反対側
の束端部周囲に配置された整流筒と、両端の樹脂隔壁と
中空糸膜との接着固定部内側端面付近の膜周囲を覆うゴ
ム状弾性の高分子材料層とを有することを特徴とする外
圧式中空糸膜モジュール。1. In an external pressure type hollow fiber membrane module in which both ends of a bundle of a large number of hollow fiber membranes are adhesively fixed to a case by resin partition walls, raw water consisting of through holes formed in one resin partition wall itself. A supply port, a straightening tube arranged around the bundle end opposite to the raw water supply port, and a rubber-like elastic cover that covers the periphery of the membrane near the inner end face of the adhesive fixing part between the resin partition wall and the hollow fiber membrane at both ends. An external pressure type hollow fiber membrane module having a molecular material layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2810996A JPH09220446A (en) | 1996-02-15 | 1996-02-15 | External pressure type hollow yarn membrane module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2810996A JPH09220446A (en) | 1996-02-15 | 1996-02-15 | External pressure type hollow yarn membrane module |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2004342060A Division JP4269171B2 (en) | 2004-11-26 | 2004-11-26 | Filtration method of external pressure type hollow fiber membrane module for aeration flushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09220446A true JPH09220446A (en) | 1997-08-26 |
Family
ID=12239653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2810996A Pending JPH09220446A (en) | 1996-02-15 | 1996-02-15 | External pressure type hollow yarn membrane module |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09220446A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002113333A (en) * | 2000-08-02 | 2002-04-16 | Toray Ind Inc | Hollow fiber membrane module |
| JP2002525197A (en) * | 1998-09-25 | 2002-08-13 | ユー・エス・フィルター・ウェイストウォーター・グループ・インコーポレイテッド | Cleaning device and cleaning method for filtration membrane module |
| WO2004037396A1 (en) * | 2002-10-24 | 2004-05-06 | Dhv Water B.V. | Method of operating a filter unit, an apparatus to be used therewith and a capillary filtration module |
| JP2005262206A (en) * | 2004-02-19 | 2005-09-29 | Toray Ind Inc | Hollow fiber membrane module |
| WO2008143292A1 (en) | 2007-05-22 | 2008-11-27 | Asahi Kasei Chemicals Corporation | Hollow fiber membrane module, process for manufacturing the same, hollow fiber membrane module assembly and method of purifying suspended water with use thereof |
| WO2009037999A1 (en) | 2007-09-18 | 2009-03-26 | Asahi Kasei Chemicals Corporation | Hollow yarn film filtering apparatus |
| US8042695B2 (en) | 2003-09-29 | 2011-10-25 | Asahi Kasei Chemicals Corporation | External pressure type hollow fiber membrane module |
| JP2012030194A (en) * | 2010-08-02 | 2012-02-16 | Sumitomo Electric Ind Ltd | Hollow yarn membrane module, hollow yarn membrane module filter, and seawater desalting pretreatment filter |
| WO2013146821A1 (en) * | 2012-03-30 | 2013-10-03 | 東レ株式会社 | Hollow fiber membrane module |
| KR20170047249A (en) | 2014-09-01 | 2017-05-04 | 도레이 카부시키가이샤 | Hollow fiber membrane module and method for manufacturing hollow fiber membrane module |
| JP2017100105A (en) * | 2015-12-04 | 2017-06-08 | 旭化成株式会社 | External pressure type hollow fiber membrane module and method for manufacturing same |
-
1996
- 1996-02-15 JP JP2810996A patent/JPH09220446A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002525197A (en) * | 1998-09-25 | 2002-08-13 | ユー・エス・フィルター・ウェイストウォーター・グループ・インコーポレイテッド | Cleaning device and cleaning method for filtration membrane module |
| JP2002113333A (en) * | 2000-08-02 | 2002-04-16 | Toray Ind Inc | Hollow fiber membrane module |
| WO2004037396A1 (en) * | 2002-10-24 | 2004-05-06 | Dhv Water B.V. | Method of operating a filter unit, an apparatus to be used therewith and a capillary filtration module |
| EP2567747A1 (en) | 2003-09-29 | 2013-03-13 | Asahi Kasei Chemicals Corporation | External pressure type hollow fiber membrane module with fibre density distribution. |
| US8042695B2 (en) | 2003-09-29 | 2011-10-25 | Asahi Kasei Chemicals Corporation | External pressure type hollow fiber membrane module |
| JP2005262206A (en) * | 2004-02-19 | 2005-09-29 | Toray Ind Inc | Hollow fiber membrane module |
| EP2263782A1 (en) | 2007-05-22 | 2010-12-22 | Asahi Kasei Chemicals Corporation | Device for fluid distribution in hollow fiber membrane modules |
| US8257590B2 (en) | 2007-05-22 | 2012-09-04 | Asahi Kasei Chemicals Corporation | Hollow fiber membrane module, process for manufacturing the same, hollow fiber membrane module assembly and method of purifying suspended water with use thereof |
| WO2008143292A1 (en) | 2007-05-22 | 2008-11-27 | Asahi Kasei Chemicals Corporation | Hollow fiber membrane module, process for manufacturing the same, hollow fiber membrane module assembly and method of purifying suspended water with use thereof |
| WO2009037999A1 (en) | 2007-09-18 | 2009-03-26 | Asahi Kasei Chemicals Corporation | Hollow yarn film filtering apparatus |
| JP2012030194A (en) * | 2010-08-02 | 2012-02-16 | Sumitomo Electric Ind Ltd | Hollow yarn membrane module, hollow yarn membrane module filter, and seawater desalting pretreatment filter |
| WO2013146821A1 (en) * | 2012-03-30 | 2013-10-03 | 東レ株式会社 | Hollow fiber membrane module |
| KR20170047249A (en) | 2014-09-01 | 2017-05-04 | 도레이 카부시키가이샤 | Hollow fiber membrane module and method for manufacturing hollow fiber membrane module |
| US10350549B2 (en) | 2014-09-01 | 2019-07-16 | Toray Industries, Inc. | Hollow fiber membrane module and method for manufacturing hollow fiber membrane module |
| JP2017100105A (en) * | 2015-12-04 | 2017-06-08 | 旭化成株式会社 | External pressure type hollow fiber membrane module and method for manufacturing same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4932492B2 (en) | Hollow fiber membrane cartridge | |
| KR100382012B1 (en) | Hollow fiber membrane cartridge | |
| KR100523778B1 (en) | Hollow fiber membrane cartridge, and hollow fiber membrane module and tank type filtration apparatus which use the cartridge | |
| KR100693944B1 (en) | Vertical skein of hollow fiber membranes and method of maintaining clean fiber surfaces | |
| AU2009255103B2 (en) | Hollow fiber membrane module with covered membrane outer periphery | |
| JP2003024751A (en) | Hollow fiber membrane cartridge | |
| KR19990036232A (en) | How to keep vertical hollow fiber membrane bundles and fiber surfaces clean | |
| IL172214A (en) | Membrane cartridge, membrane separating device and membrane separating method | |
| JPH09220446A (en) | External pressure type hollow yarn membrane module | |
| JP4498373B2 (en) | Hollow fiber membrane cartridge, and hollow fiber membrane module and tank type filtration device using the same | |
| JP4269171B2 (en) | Filtration method of external pressure type hollow fiber membrane module for aeration flushing | |
| WO2012133068A1 (en) | Hollow fiber membrane module | |
| JPH09225270A (en) | Hollow fiber membrane module | |
| JP5030690B2 (en) | Hollow fiber membrane module | |
| JP2014195775A (en) | Hollow fiber membrane module | |
| JP2005238053A (en) | Hollow fiber membrane module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20040115 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20040120 |
|
| RD02 | Notification of acceptance of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7422 Effective date: 20040219 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20040319 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20041005 |
|
| A521 | Written amendment |
Effective date: 20041126 Free format text: JAPANESE INTERMEDIATE CODE: A523 |
|
| A911 | Transfer of reconsideration by examiner before appeal (zenchi) |
Effective date: 20050114 Free format text: JAPANESE INTERMEDIATE CODE: A911 |
|
| A912 | Removal of reconsideration by examiner before appeal (zenchi) |
Effective date: 20050304 Free format text: JAPANESE INTERMEDIATE CODE: A912 |
|
| RD05 | Notification of revocation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7425 Effective date: 20060619 |
|
| RD03 | Notification of appointment of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7423 Effective date: 20071009 |