JPH0579366B2 - - Google Patents
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- Publication number
- JPH0579366B2 JPH0579366B2 JP61292045A JP29204586A JPH0579366B2 JP H0579366 B2 JPH0579366 B2 JP H0579366B2 JP 61292045 A JP61292045 A JP 61292045A JP 29204586 A JP29204586 A JP 29204586A JP H0579366 B2 JPH0579366 B2 JP H0579366B2
- Authority
- JP
- Japan
- Prior art keywords
- hollow fiber
- adhesive
- fiber membrane
- length
- filled
- 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.)
- Expired - Fee Related
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- Separation Using Semi-Permeable Membranes (AREA)
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は各種プラントの水処置装置にあつて、
被処理液中の固形部を分離・除去する目的で使用
されるろ過装置に関する。
（従来の技術）
一般に中空糸はその外径が0.3〜３mm程度で、
その表面に微細な穴を有する中空円筒状の繊維の
膜である。そして単位容積内の濾過面積を大きく
とることができるとともに、耐圧性に優れている
という利点を備えている。そこで中空糸を多数本
束ねてその両端を接着剤である樹脂で固めること
によりフイルタを形成する。この中空糸膜フイル
タを水処理装置用の濾過装置として使用する。
以下第５図を参照してそのような中空糸膜濾過
装置の構成を説明する。第５図は中空糸膜濾過装
置の断面図であり、図中符号１は容器本体であ
る。この容器本体１内は仕切板３により上下に二
分されており、下部空間を濾過室１ａとし、上部
空間を処理液室１ｂとしている。上記濾過室１ａ
内には中空糸膜フイルタ２が上記仕切板３より垂
下されている。上記中空糸膜フイルタ２は支持体
４の外周に多数本の中空糸２ａを集束させて、そ
の上端部及び下端部を接着剤で固定するととも
に、更にその外周から集束固定部材７を設置して
固定した構成となつている。また第５図に示す装
置では上記構成をなす中空糸膜フイルタ２を鉛直
方向に２段連接しており、図中符号８はその際使
用される接続筒である。上記容器本体１の下端部
には濾過室１ａに連通する液供給配管１０が接続
され、一方上端部には処理液室１ｂに連通する処
理液排出配管１１が接続されている。上記液供給
配管１０には開閉弁１２が介挿されており、濃縮
液排出配管１３が分岐接続されている。この濃縮
液排出配管１３には開閉弁１４が介挿されてい
る。上記液供給配管１０を介して濾過室１ａ内に
供給された液は、中空糸膜フイルタ２を通過する
際に濾過されて各中空糸２ａの中空部を介して排
出される。
上記構成にあつて、濾過により中空糸膜フイル
タ２の前後の差圧が上昇して、これが規定値に達
した場合には、逆洗操作を施して各中空糸２ａの
表面に付着した固形分を洗い落とす操作が行われ
る。すなわち前記処理液排出配管１１を介して中
空糸膜フイルタ２の各中空糸ａ内に逆洗用の加圧
気体を供給する。それと同時に中空糸膜フイルタ
２の下方からバブリング操作を施す。つまり前記
容器本体１内にあつて中空糸膜フイルタ２の下方
にはバブリング管１５が配設されており、このバ
ブリング管１５の下面側には気泡孔１６が形成さ
れている。また上記バブリング管１５は開閉弁１
８を有するエアー供給管１７に接続されている。
そして上記バブリング管１５に上記エアー供給配
管１７を介してエアーを供給することにより気泡
孔１６より気泡を発生させる。該気泡により中空
糸膜フイルタ２をバブリングさせて洗浄効果を高
める。尚前記仕切板３の下方位置の容器本体１に
はオーバーフロー管１９が接続されており、該オ
ーバーフロー管１９には開閉弁２０が介挿されて
いる。また図中符号２１は保護管であつて、この
保護管２１によつて上述したバブリングの際の気
泡を中空糸膜フイルタ２内に効果的に導入するも
のである。
ところで上述した構成の中空糸膜フイルタ２に
対して逆洗を施す際、両端部の接着剤充填部によ
つて決定される両端間の距離（第５図中符号L2
示す）に対して、その間に配置される中空糸２ａ
の長さ（L1、上記L2なる間隔の間で若干弛んで
いるのでL2より大きな値である）をどの程度の
余長をもつて決定すれば、前述したバブリングが
効果的になされかつ中空糸２ａの破損等が防止で
きるかについては考察されていないのが現状であ
る。従来は５％程度の余長をもつて設定してい
た。ところが、濾過・逆洗を繰返すうちに複数本
の中空糸２ａがからみついて屈曲・破損するとい
う事態が発生した。これは中空糸２ａが高分子材
料からなり、被処理液の主成分である水とその比
重が殆ど等しい為に、中空糸２ａが舞い上がり屈
曲・破損等に至つたものと考えられる。このよう
な問題を解決する手段としては、前記５％程度に
設定した余長を短くする、あるいは無くすことが
考えられる。しかしながらその様な方法をとつた
場合には以下のような問題が生ずる。
まず前述したバブリングを行なう際の中空糸
２ａの揺動幅が必要以上に制限されて、十分な
バブリング効果を得ることができない。
中空糸膜フイルタ２は前述したように複数本
の中空糸２ａがち密に配列された状態で集束さ
れており、余長を少なくすると、各中空糸２ａ
間に被処理液が効果的に流通せず、よつて中空
糸膜フイルタ２の外周に位置する中空糸２ａの
みが濾過に供される結果となる。これは濾過効
率の点からも好ましくなく、又外周に位置する
中空糸２ａのみに固形分が付着するという現象
が発生してしまう。
また逆洗を施した場合に、該逆洗により剥離
した固形分が中空糸２ａ間に溜つてしまい、剥
離した固形分の排出が効率良く行われないとい
う問題がある。これも結局上記と同様に中空
糸２ａがち密に配設されかつ余長が少ない為に
各中空糸２ａ間における流通性が悪いことによ
る。
（発明が解決しようとする問題点）
このように従来の中空糸膜フイルタにあつては
その余長をいかに決定するかについての十分な検
討がなされておらず、その結果種々の問題を引起
こしており、本発明は以下の点に基づいてなされ
たものでその目的とするところは、中空糸の破損
を防止するとともに効果的な逆洗を行なうことを
可能とする余長を備えた中空糸膜フイルタを有す
るろ過装置を提供することにある。
〔発明の構成〕
（問題点を解決するための手段）
すなわち本発明によるろ過装置は、複数本の中
空糸を集束してその両集束端部が開口するように
接着剤を充填して固定し、上記接着剤を充填した
接着剤充填部の外周に集束固定部材を設置して固
定して上記両端の接着剤充填部を所定長さをもつ
て連結する中空糸膜フイルタと、この中空糸膜の
内部を加圧する逆洗手段と、この中空糸膜を外部
から気泡によつて振動させるバブリング手段とを
備えたろ過装置において、上記両接着剤充填部間
の中空糸の長さL1は上記接着剤充填部間の間隔
L2に対して所定の余長ΔLを持つて配設され、こ
の余長ΔLは以下の条件を満足するものであるこ
とを特徴とするものである。
0.01≦（ΔL／L1）≦0.04
但し
L1；両接着剤充填部間に配設される中空糸膜
の長さ
L2；両接着剤充填部間の間隔
ΔL；（L1−L2）
（作用）
中空糸の余長を上記範囲内とすることにより、
余長が大きすぎる為に発生する中空糸のからみつ
き、それによる屈曲・破損を無くすとともに、余
長が小さ過ぎることにより発生する逆洗効果の低
下等の問題を効果的に解決するものである。
（実施例）
以下第１図乃至第４図を参照して本発明の一実
施例を説明する。尚従来と同一部分には同一符号
を付して示しその説明は省略する。第１図は中空
糸膜フイルタ２の構成を示す断面図であり、上端
及び下端の各接着剤充填部６間に若干弛んだ状態
で配設される中空糸２ａの長さL1は、上記各接
着剤充填部６間の距離L2に対してΔLなる余長を
有しており、この余長ΔLは以下の範囲内に設定
されている。
0.01≦（ΔL／L1）≦0.04 ……（）
但し
L1；両接着剤充填部間に配設される中空糸の
長さ
L2；両接着剤充填部間の間隔
ΔL；（L1−L2）
余長ΔLをこのような範囲内に設定したのは、
余長が大き過ぎることによる弊害、及び余長が小
さ過ぎることによる弊害の両方を効果的に排除す
る為であり、以下第３図及び第４図を参照して説
明する。
第３図は横軸に余長ΔLの中空糸２ａの長さL1
に対する割合をとり（％）、縦軸に中空糸２ａの
屈曲部本数（中空糸1000本当り）をとつて示した
図である。これによると、余長ΔLの中空糸２ａ
の長さL1に対する割合が４％以下の場合には屈
曲部が発生した中空糸２ａの本数が極めて少ない
ことがわかる。よつて余長ΔL割合を４％以下に
すれば余長が大きいことになる弊害を効果的に無
くすことができる。一方下限値であるが、これに
ついては第４図を参照して説明する。第４図は横
軸に余長ΔLの中空糸２ａに長さL1に対する割合
をとり（％）、縦軸に逆洗効率（逆洗によつて剥
離した固形分量／捕捉固形分量、％）をとつて示
したもので、この第４図から明らかなように余長
ΔLの中空糸２ａの長さL1に対する割合が１％以
下になると逆洗効率が急速に悪化しているのがわ
かる。これは第２図にも示すように、逆洗時にバ
ブリングを行なう際には中空糸２ａがある程度揺
動する必要があり、該揺動により固形分が振い落
されるからである。さらに以下のことが観察され
た。すなわち余長ΔLの割合を１％未満とした場
合には、中空糸２ａの動きが必要以上に制限され
るために、中空糸膜フイルタ２の中心部の中空糸
２ａ近傍にあつては濾液が流通せず、よつて外周
部の中空糸２ａのみが濾過に供される結果となつ
てしまう。これは外周に位置する中空糸２ａのみ
に固形分が付着することから観察することができ
る。それと同時に１％未満とした場合には、逆洗
時に剥離した固形分が中空糸膜フイルタ２内に溜
つてしまい、効果的に除去できないことも確認さ
れた。このような理由から余長ΔLの中空糸２ａ
の長さL1に対する割合の下限値を１％としたも
のである。
以下本実施例によると以下のような効果を奏す
ることができる。
まず逆洗時における中空糸２ａの舞い上が
り、それによつてからみつき屈曲あるいは破損
するといつた事態を効果的に防止することがで
きる。
次に逆洗時には中空糸２ａが適度に揺動する
ので、効果的な逆洗が可能となる。
また逆洗時に剥離した固形分が中空糸膜フイ
ルタ２内に溜つてしまうということもない。
さらに濾過時にあつても中空糸膜フイルタ２
の中心部に位置する中空糸２ａの周りにも濾液
が効果的に流通するので、外周部のみで濾過が
行われるといつた事態を防止することができ、
効率の良い濾過を提供することができる。
〔発明の効果〕
以上詳述したように本発明によるろ過装置によ
ると、中空糸の舞い上がり、それによるからみつ
き、さらには屈曲・破損といつた事態を防止する
ことができるとともに、効果的な逆洗を提供する
ことができる等その効果は大である。 [Detailed description of the invention] [Object of the invention] (Industrial application field) The present invention relates to water treatment equipment for various plants,
The present invention relates to a filtration device used for the purpose of separating and removing solid parts in a liquid to be treated. (Prior art) Hollow fibers generally have an outer diameter of about 0.3 to 3 mm.
It is a hollow cylindrical fiber membrane with fine holes on its surface. It has the advantage of being able to provide a large filtration area within a unit volume and having excellent pressure resistance. Therefore, a filter is formed by bundling a large number of hollow fibers and hardening both ends with resin, which is an adhesive. This hollow fiber membrane filter is used as a filtration device for water treatment equipment. The configuration of such a hollow fiber membrane filtration device will be explained below with reference to FIG. FIG. 5 is a sectional view of the hollow fiber membrane filtration device, and reference numeral 1 in the figure is the container body. The inside of this container body 1 is divided into upper and lower halves by a partition plate 3, with a lower space serving as a filtration chamber 1a and an upper space serving as a processing liquid chamber 1b. The above filtration chamber 1a
Inside, a hollow fiber membrane filter 2 is suspended from the partition plate 3. The hollow fiber membrane filter 2 has a plurality of hollow fibers 2a bundled around the outer periphery of a support 4, whose upper and lower ends are fixed with an adhesive, and a bundle fixing member 7 is further installed from the outer periphery. It has a fixed configuration. Further, in the apparatus shown in FIG. 5, the hollow fiber membrane filters 2 having the above-mentioned structure are connected in two stages in the vertical direction, and reference numeral 8 in the figure is a connecting tube used in this case. A liquid supply pipe 10 communicating with the filtration chamber 1a is connected to the lower end of the container body 1, while a processing liquid discharge pipe 11 communicating with the processing liquid chamber 1b is connected to the upper end. An on-off valve 12 is inserted into the liquid supply pipe 10, and a concentrated liquid discharge pipe 13 is branch-connected thereto. An on-off valve 14 is inserted into this concentrated liquid discharge pipe 13. The liquid supplied into the filtration chamber 1a through the liquid supply pipe 10 is filtered when passing through the hollow fiber membrane filter 2 and is discharged through the hollow portion of each hollow fiber 2a. In the above configuration, when the differential pressure before and after the hollow fiber membrane filter 2 increases due to filtration and reaches a specified value, a backwashing operation is performed to remove the solids attached to the surface of each hollow fiber membrane 2a. An operation is performed to wash away the That is, pressurized gas for backwashing is supplied into each hollow fiber a of the hollow fiber membrane filter 2 via the treatment liquid discharge pipe 11. At the same time, a bubbling operation is performed from below the hollow fiber membrane filter 2. That is, a bubbling pipe 15 is disposed within the container body 1 and below the hollow fiber membrane filter 2 , and a bubble hole 16 is formed on the lower surface side of the bubbling pipe 15. In addition, the bubbling pipe 15 is connected to the on-off valve 1.
8 is connected to an air supply pipe 17 having a diameter of 8.
Then, by supplying air to the bubbling tube 15 via the air supply pipe 17, bubbles are generated from the bubble hole 16. The air bubbles cause the hollow fiber membrane filter 2 to bubble, thereby enhancing the cleaning effect. An overflow pipe 19 is connected to the container body 1 located below the partition plate 3, and an on-off valve 20 is inserted into the overflow pipe 19. Further, reference numeral 21 in the figure is a protection tube, and this protection tube 21 effectively introduces the air bubbles during the bubbling described above into the hollow fiber membrane filter 2 . By the way, when performing backwashing on the hollow fiber membrane filter 2 having the above-mentioned structure, the distance between both ends determined by the adhesive filled portions at both ends (symbol L 2 in FIG. 5)
), the hollow fiber 2a disposed between the hollow fibers 2a
How much extra length should be determined for the length (L 1 is slightly slack between the interval L 2 mentioned above, so it is larger than L 2 ) so that the bubbling described above can be done effectively and At present, no consideration has been given as to whether damage to the hollow fibers 2a can be prevented. Conventionally, it was set with an extra length of about 5%. However, as filtration and backwashing were repeated, a situation occurred in which a plurality of hollow fibers 2a became entangled, bent, and damaged. This is considered to be because the hollow fibers 2a are made of a polymeric material and have almost the same specific gravity as water, which is the main component of the liquid to be treated, so that the hollow fibers 2a fly up and become bent and damaged. A possible solution to this problem is to shorten or eliminate the extra length set at about 5%. However, when such a method is used, the following problems occur. First, the swing width of the hollow fibers 2a when performing the bubbling described above is restricted more than necessary, making it impossible to obtain a sufficient bubbling effect. As mentioned above, the hollow fiber membrane filter 2 is made up of a plurality of hollow fibers 2a that are tightly arranged in a bundle, and if the excess length is reduced, each hollow fiber 2a
The liquid to be treated does not flow effectively between the two, and as a result, only the hollow fibers 2a located on the outer periphery of the hollow fiber membrane filter 2 are subjected to filtration. This is not preferable from the point of view of filtration efficiency, and also causes a phenomenon in which solid matter adheres only to the hollow fibers 2a located on the outer periphery. Further, when backwashing is performed, there is a problem in that the solids exfoliated by the backwashing accumulate between the hollow fibers 2a, and the exfoliated solids are not efficiently discharged. This is also due to the fact that the hollow fibers 2a are densely arranged and the remaining length is small, resulting in poor flowability between the hollow fibers 2a. (Problems to be Solved by the Invention) As described above, in the case of conventional hollow fiber membrane filters, sufficient consideration has not been given to how to determine the extra length, and as a result, various problems have arisen. The present invention has been made based on the following points, and its purpose is to provide a hollow fiber having an extra length that prevents breakage of the hollow fiber and enables effective backwashing. An object of the present invention is to provide a filtration device having a membrane filter. [Structure of the Invention] (Means for Solving the Problems) That is, the filtration device according to the present invention includes a plurality of hollow fibers that are bundled and fixed by being filled with an adhesive so that both bundled ends are open. , a hollow fiber membrane filter that connects the adhesive filled portions at both ends with a predetermined length by installing and fixing a focusing fixing member around the outer periphery of the adhesive filled portion filled with the adhesive; and the hollow fiber membrane. In a filtration device equipped with backwashing means for pressurizing the inside of the hollow fiber membrane and bubbling means for vibrating the hollow fiber membrane from the outside with air bubbles, the length L 1 of the hollow fiber between the two adhesive-filled parts is as follows. Spacing between adhesive filling parts
It is arranged with a predetermined extra length ΔL with respect to L 2 , and this extra length ΔL satisfies the following conditions. 0.01≦(ΔL/L 1 )≦0.04 However, L 1 ; Length of the hollow fiber membrane disposed between both adhesive-filled parts L 2 ; Distance between both adhesive-filled parts ΔL; (L 1 − L 2 ) (Function) By keeping the extra length of the hollow fiber within the above range,
This eliminates entanglement of the hollow fibers and bending/damage caused by the excessive length, and effectively solves problems such as reduced backwashing effect caused by the excessive length. (Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 4. It should be noted that the same parts as in the prior art are denoted by the same reference numerals and the explanation thereof will be omitted. FIG. 1 is a sectional view showing the structure of the hollow fiber membrane filter 2 , and the length L 1 of the hollow fibers 2a, which are arranged in a slightly slack state between the adhesive filling portions 6 at the upper and lower ends, is It has an extra length ΔL with respect to the distance L 2 between each adhesive filling part 6, and this extra length ΔL is set within the following range. 0.01≦(ΔL／L 1 )≦0.04 ...() However, L 1 ; Length of hollow fiber arranged between both adhesive-filled parts L 2 ; Distance between both adhesive-filled parts ΔL; (L 1 −L 2 ) The extra length ΔL was set within this range because
This is to effectively eliminate both the disadvantages due to the extra length being too large and the disadvantages due to the extra length being too small, and will be explained below with reference to FIGS. 3 and 4. In Figure 3, the horizontal axis shows the extra length ΔL, the length L 1 of the hollow fiber 2a.
It is a diagram showing the ratio (%) of the hollow fibers 2a and the number of bent portions of the hollow fibers 2a (per 1000 hollow fibers) on the vertical axis. According to this, the hollow fiber 2a with extra length ΔL
It can be seen that when the ratio of L to length L1 is 4% or less, the number of hollow fibers 2a in which bent portions have occurred is extremely small. Therefore, if the excess length ΔL ratio is set to 4% or less, the adverse effects of a large excess length can be effectively eliminated. On the other hand, the lower limit value will be explained with reference to FIG. In Figure 4, the horizontal axis shows the ratio of the extra length ΔL to the length L 1 of the hollow fiber 2a (%), and the vertical axis shows the backwashing efficiency (amount of solids removed by backwashing/amount of captured solids, %) As is clear from Fig. 4, when the ratio of the extra length ΔL to the length L 1 of the hollow fiber 2a becomes less than 1%, the backwashing efficiency deteriorates rapidly. . This is because, as shown in FIG. 2, when bubbling is performed during backwashing, it is necessary for the hollow fibers 2a to oscillate to some extent, and the oscillation shakes off the solid content. Furthermore, the following was observed. In other words, when the proportion of the extra length ΔL is less than 1%, the movement of the hollow fibers 2a is restricted more than necessary, so that the filtrate near the hollow fibers 2a at the center of the hollow fiber membrane filter 2 is It does not flow, and as a result, only the hollow fibers 2a at the outer periphery are subjected to filtration. This can be observed from the fact that the solid content adheres only to the hollow fibers 2a located on the outer periphery. At the same time, it was also confirmed that if the content was less than 1%, the solid content exfoliated during backwashing would accumulate in the hollow fiber membrane filter 2 and could not be removed effectively. For this reason, the hollow fiber 2a with extra length ΔL
The lower limit of the ratio to the length L1 is set to 1%. According to this embodiment, the following effects can be achieved. First, it is possible to effectively prevent the hollow fibers 2a from flying up during backwashing and thereby becoming entangled, bent or damaged. Next, during backwashing, the hollow fibers 2a are appropriately swung, making it possible to perform effective backwashing. Furthermore, solid matter separated during backwashing does not accumulate in the hollow fiber membrane filter 2 . Furthermore, even during filtration, the hollow fiber membrane filter 2
Since the filtrate also effectively circulates around the hollow fiber 2a located in the center of the filter, it is possible to prevent a situation where filtration is performed only at the outer periphery.
Efficient filtration can be provided. [Effects of the Invention] As detailed above, according to the filtration device of the present invention, it is possible to prevent hollow fibers from flying up, entanglement, and even bending and breakage, as well as to provide effective backwashing. The effects are great, such as being able to provide the following.
第１図乃至第４図は本発明の一実施例を示す図
で、第１図は中空糸膜フイルタの正面図、第２図
が逆洗時の作用を示す中空糸膜フイルタの正面
図、第３図は中空糸の余長を変化させた場合の屈
曲部発生本数の変化を示す特性図、第４図は中空
糸の余長を変化させた場合の逆洗効果変化を示す
特性図、第５図は中空糸膜濾過装置の断面図であ
る。
２……中空糸膜フイルタ、２ａ……中空糸、４
……支持体、６……接着剤充填部、７……集束固
定部材。
1 to 4 are views showing an embodiment of the present invention, in which FIG. 1 is a front view of a hollow fiber membrane filter, FIG. 2 is a front view of the hollow fiber membrane filter showing the action during backwashing, Fig. 3 is a characteristic diagram showing the change in the number of bent parts when the extra length of the hollow fiber is changed, and Fig. 4 is a characteristic diagram showing the change in the backwashing effect when the extra length of the hollow fiber is changed. FIG. 5 is a sectional view of the hollow fiber membrane filtration device. 2 ...Hollow fiber membrane filter, 2a...Hollow fiber, 4
... Support body, 6 ... Adhesive filling part, 7 ... Focusing fixing member.
Claims (1)
開口するように接着剤を充填して固定し、上記接
着剤を充填した接着剤充填部の外周に集束固定部
材を設置して固定して上記両端の接着剤充填部を
所定長さをもつて連結する中空糸膜フイルタと、
この中空糸膜の内部を加圧する逆洗手段と、この
中空糸膜を外部から気泡によつて振動させるバブ
リング手段とを備えたろ過装置において、上記両
接着剤充填部間の中空糸の長さL1は上記接着剤
充填部間の間隔L2に対して所定の余長ΔLを持つ
て配設され、この余長ΔLは以下の条件を満足す
るものであることを特徴とするろ過装置。 0.01≦（ΔL／L1）≦0.04 但し L1；両接着剤充填部間に配設される中空糸膜
の長さ L2；両接着剤充填部間の間隔 ΔL；（L1−L2）[Scope of Claims] 1. A plurality of hollow fibers are bundled and fixed by filling an adhesive so that both bundled ends are open, and the bundle is fixed to the outer periphery of the adhesive-filled part filled with the adhesive. a hollow fiber membrane filter in which a member is installed and fixed to connect the adhesive-filled portions at both ends with a predetermined length;
In a filtration device equipped with a backwashing means for pressurizing the inside of the hollow fiber membrane and a bubbling means for vibrating the hollow fiber membrane from the outside with air bubbles, the length of the hollow fiber between the two adhesive-filled parts is A filtration device characterized in that L 1 is arranged with a predetermined extra length ΔL with respect to the interval L 2 between the adhesive filled parts, and this extra length ΔL satisfies the following conditions. 0.01≦(ΔL/L 1 )≦0.04 However, L 1 ; Length of the hollow fiber membrane disposed between both adhesive-filled parts L 2 ; Distance between both adhesive-filled parts ΔL; (L 1 − L 2 )
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29204586A JPS63143905A (en) | 1986-12-08 | 1986-12-08 | Hollow yarn membrane filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29204586A JPS63143905A (en) | 1986-12-08 | 1986-12-08 | Hollow yarn membrane filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63143905A JPS63143905A (en) | 1988-06-16 |
| JPH0579366B2 true JPH0579366B2 (en) | 1993-11-02 |
Family
ID=17776822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29204586A Granted JPS63143905A (en) | 1986-12-08 | 1986-12-08 | Hollow yarn membrane filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63143905A (en) |
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|---|---|---|---|---|
| US5639373A (en) * | 1995-08-11 | 1997-06-17 | Zenon Environmental Inc. | Vertical skein of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate |
| EP1213048B2 (en) * | 1995-08-11 | 2015-11-11 | Zenon Technology Partnership | Method of potting fiber membranes |
| KR20050046718A (en) | 1995-08-11 | 2005-05-18 | 제논 인바이런멘탈 인코포레이티드 | Vertical skein of hollow fiber membranes and method of maintaining clean fiber surfaces |
| US8852438B2 (en) * | 1995-08-11 | 2014-10-07 | Zenon Technology Partnership | Membrane filtration module with adjustable header spacing |
| US20040238432A1 (en) * | 1995-08-11 | 2004-12-02 | Mailvaganam Mahendran | Membrane filtration module with adjustable header spacing |
| US7087173B2 (en) | 1995-08-11 | 2006-08-08 | Zenon Environmental Inc. | Inverted cavity aerator for membrane module |
| US6706189B2 (en) | 1998-10-09 | 2004-03-16 | Zenon Environmental Inc. | Cyclic aeration system for submerged membrane modules |
| AUPS300602A0 (en) | 2002-06-18 | 2002-07-11 | U.S. Filter Wastewater Group, Inc. | Methods of minimising the effect of integrity loss in hollow fibre membrane modules |
| AU2002950934A0 (en) | 2002-08-21 | 2002-09-12 | U. S. Filter Wastewater Group, Inc. | Aeration method |
| US8268176B2 (en) | 2003-08-29 | 2012-09-18 | Siemens Industry, Inc. | Backwash |
| JP5023430B2 (en) * | 2004-03-17 | 2012-09-12 | 東レ株式会社 | Hollow fiber membrane module and manufacturing method thereof |
| JP2011167687A (en) * | 2004-03-17 | 2011-09-01 | Toray Ind Inc | Method for producing hollow fiber membrane module |
| JP4954880B2 (en) | 2004-09-15 | 2012-06-20 | シーメンス・ウォーター・テクノロジーズ・コーポレーション | Continuously changing ventilation |
| US7591950B2 (en) | 2004-11-02 | 2009-09-22 | Siemens Water Technologies Corp. | Submerged cross-flow filtration |
| CN101184548B (en) | 2005-04-29 | 2011-10-05 | 西门子水技术公司 | Chemical clean for membrane filter |
| JP2007044666A (en) * | 2005-08-12 | 2007-02-22 | Toray Ind Inc | Hollow fiber membrane module |
| JP2009504399A (en) | 2005-08-22 | 2009-02-05 | シーメンス・ウォーター・テクノロジーズ・コーポレーション | Assembly for water filtration using a tubular manifold to minimize backwash |
| US20070163942A1 (en) * | 2006-01-19 | 2007-07-19 | Toray Industries, Inc. | Hollow fiber membrane module |
| US8293098B2 (en) | 2006-10-24 | 2012-10-23 | Siemens Industry, Inc. | Infiltration/inflow control for membrane bioreactor |
| WO2008123972A1 (en) | 2007-04-02 | 2008-10-16 | Siemens Water Technologies Corp. | Improved infiltration/inflow control for membrane bioreactor |
| US9764288B2 (en) | 2007-04-04 | 2017-09-19 | Evoqua Water Technologies Llc | Membrane module protection |
| AU2008263139B2 (en) | 2007-05-29 | 2011-08-25 | Evoqua Water Technologies Llc | Membrane cleaning with pulsed airlift pump |
| JP2013500144A (en) | 2008-07-24 | 2013-01-07 | シーメンス インダストリー インコーポレイテッド | Method and filtration system for providing structural support to a filtration membrane module array in a filtration system |
| AU2010101488B4 (en) | 2009-06-11 | 2013-05-02 | Evoqua Water Technologies Llc | Methods for cleaning a porous polymeric membrane and a kit for cleaning a porous polymeric membrane |
| ES2738898T3 (en) | 2010-04-30 | 2020-01-27 | Evoqua Water Tech Llc | Fluid flow distribution device |
| AU2011305377B2 (en) | 2010-09-24 | 2014-11-20 | Evoqua Water Technologies Llc | Fluid control manifold for membrane filtration system |
| CN103958034B (en) | 2011-09-30 | 2017-03-22 | 伊沃夸水处理技术有限责任公司 | Isolation valve |
| CA2850309C (en) | 2011-09-30 | 2020-01-07 | Evoqua Water Technologies Llc | Improved manifold arrangement |
| US9533261B2 (en) | 2012-06-28 | 2017-01-03 | Evoqua Water Technologies Llc | Potting method |
| CN104684631A (en) | 2012-09-26 | 2015-06-03 | 伊沃夸水处理技术有限责任公司 | Membrane securement device |
| AU2013231145B2 (en) | 2012-09-26 | 2017-08-17 | Evoqua Water Technologies Llc | Membrane potting methods |
| EP2900356A1 (en) | 2012-09-27 | 2015-08-05 | Evoqua Water Technologies LLC | Gas scouring apparatus for immersed membranes |
| EP3052221B1 (en) | 2013-10-02 | 2022-12-14 | Rohm & Haas Electronic Materials Singapore Pte. Ltd | Device for repairing a membrane filtration module |
| WO2017011068A1 (en) | 2015-07-14 | 2017-01-19 | Evoqua Water Technologies Llc | Aeration device for filtration system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5714929Y2 (en) * | 1978-09-29 | 1982-03-27 | ||
| JPS5757333Y2 (en) * | 1978-09-19 | 1982-12-09 | ||
| JPS59322A (en) * | 1982-06-23 | 1984-01-05 | Mitsubishi Heavy Ind Ltd | Stirring type granulator |
-
1986
- 1986-12-08 JP JP29204586A patent/JPS63143905A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63143905A (en) | 1988-06-16 |
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