JPS6384607A - Hollow yarn membrane filter - Google Patents
Hollow yarn membrane filterInfo
- Publication number
- JPS6384607A JPS6384607A JP61228252A JP22825286A JPS6384607A JP S6384607 A JPS6384607 A JP S6384607A JP 61228252 A JP61228252 A JP 61228252A JP 22825286 A JP22825286 A JP 22825286A JP S6384607 A JPS6384607 A JP S6384607A
- Authority
- JP
- Japan
- Prior art keywords
- hollow fiber
- fiber membrane
- treated
- inner cylinder
- filtration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000012528 membrane Substances 0.000 title claims abstract description 62
- 239000012510 hollow fiber Substances 0.000 claims description 82
- 238000001914 filtration Methods 0.000 claims description 53
- 239000007788 liquid Substances 0.000 claims description 42
- 238000005374 membrane filtration Methods 0.000 claims description 20
- 230000001629 suppression Effects 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 239000007787 solid Substances 0.000 abstract description 7
- 238000011001 backwashing Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 7
- 230000001681 protective effect Effects 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000005587 bubbling Effects 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000003456 ion exchange resin Substances 0.000 description 2
- 229920003303 ion-exchange polymer Polymers 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は濾過材として中空糸膜を使用する中空糸Ｆｌｌ
ｉＩｉ！過装置に係り、特に中空糸膜濾過装置内におけ
る被処理液の流入動圧の影響が少なく、処理流Ｅの分布
が均一となる中空糸Ｉｌｃ！濾過装置に関する。Detailed Description of the Invention [Object of the Invention] (Industrial Application Field) The present invention relates to a hollow fiber membrane using a hollow fiber membrane as a filtration medium.
iIi! In particular, the hollow fiber Ilc! which is less affected by the inflow dynamic pressure of the liquid to be treated in the hollow fiber membrane filtration apparatus, and which makes the distribution of the treated flow E uniform! Regarding a filtration device.
（従来の技術）
各種固形物の濾過材として中空糸膜を利用した中空糸膜
濾過装置は原子力産業、電子工業、医薬製造業などの広
い分野で採用されている。例えば原子カプラントにおい
ては、放射線被曝の低減および燃料の健全性を維持する
ために、プラント系内で発生した放射性固形物（クラッ
ド）が炉内に同伴され蓄積されることを防止する対策が
採られ、そのクラッドを除去する一手段として中空糸膜
濾過装置が設置されている。(Prior Art) Hollow fiber membrane filtration devices that use hollow fiber membranes as a filtering material for various solid substances are employed in a wide range of fields such as the nuclear industry, the electronics industry, and the pharmaceutical manufacturing industry. For example, in nuclear couplants, measures are taken to prevent radioactive solids (crud) generated within the plant system from being entrained and accumulated inside the reactor in order to reduce radiation exposure and maintain the integrity of the fuel. A hollow fiber membrane filtration device is installed as a means of removing the crud.
従来、沸騰水型原子カプラントでは、復水浄化系のクラ
ッドを除去する効率を高めるために、脛床式イオン交換
塔に加えて粉末イオン交換樹脂プリコート方式の濾過装
置を併設していた。Conventionally, boiling water type atomic couplers have been equipped with a powder ion exchange resin precoat type filtration device in addition to the tread bed type ion exchange tower in order to increase the efficiency of removing crud from the condensate purification system.
しかし、この種の濾過装置からは多聞の使用済イオン交
換樹脂が廃棄物として発生し、その貯蔵および処理に多
額の費用と労力を要し、濾過装置の運転コストを引ぎ上
げていた。However, this type of filtration device generates a large amount of used ion exchange resin as waste, and storage and processing thereof requires a large amount of cost and labor, increasing the operating cost of the filtration device.
そのため、二次廃棄物発生量が少なく、貯蔵スペースも
狭く、かつ運転コストが低部な濾過装置の開発が希求さ
れ、その結果、中空糸膜濾過装置が広く適用されるに至
っている。Therefore, there is a desire to develop a filtration device that generates less secondary waste, has a small storage space, and has low operating costs.As a result, hollow fiber membrane filtration devices have come to be widely applied.
従来の中空糸膜濾過装置の構造は一般に第２図に例示す
る通り、筒状の濾過容器１と蓋板２を支持板３を介して
接合し、密閉容器を形成している。As illustrated in FIG. 2, the structure of a conventional hollow fiber membrane filtration device is generally such that a cylindrical filtration container 1 and a lid plate 2 are joined via a support plate 3 to form a closed container.
支持板３は、密閉容器内を濾過室４と処理液室５とに仕
切っている。濾過容器１底部には被処理液入口６と、ド
レン排出ロアが設けられ、濾過容器１側壁上部には逆洗
用流体を排出するためのベントノズル８が配設されてい
る。また、蓋板２には、逆洗用空気入口を兼用した処理
液出口１９が設けられている。The support plate 3 partitions the inside of the closed container into a filtration chamber 4 and a processing liquid chamber 5. A liquid to be treated inlet 6 and a drain discharge lower are provided at the bottom of the filtration container 1, and a vent nozzle 8 for discharging backwash fluid is provided at the upper side wall of the filtration container 1. Further, the lid plate 2 is provided with a processing liquid outlet 19 which also serves as a backwashing air inlet.
濾過容器１の濾過室４内には多数の中空糸膜モジュール
構造体９が垂設されており、この中空糸膜モジュール構
造体９は、細い繊維状の中空糸膜１０を多数本束ね、そ
の上下端を充填材で固着して形成した中空糸膜モジュー
ル１１を継手１２を介して軸方向に複数連結して構成し
ている。第２図においては、中空糸膜モジュール１１を
３段に連接して一体的な中空糸膜モジュール構造体９を
形成した例で図示している。A large number of hollow fiber membrane module structures 9 are vertically installed in the filtration chamber 4 of the filtration container 1, and the hollow fiber membrane module structures 9 are made by bundling a large number of thin fibrous hollow fiber membranes 10. A plurality of hollow fiber membrane modules 11 whose upper and lower ends are fixed with a filler are connected in the axial direction via joints 12. FIG. 2 shows an example in which hollow fiber membrane modules 11 are connected in three stages to form an integral hollow fiber membrane module structure 9.
中空糸膜モジュール構造体９は、前記支持板３に設けた
取付口１３に挿入係止され、支持板３上に接合ボルトに
よって固定される押え板１４に拘束され上方へ扱は出さ
ないように固定される。The hollow fiber membrane module structure 9 is inserted and locked into a mounting hole 13 provided on the support plate 3, and is restrained by a holding plate 14 fixed on the support plate 3 with a connecting bolt so that it cannot be handled upward. Fixed.
各中空糸膜モジュール構造体９の外周には保護管１５が
配設され、この保護管１５はその上端がμ持板３の下面
に溶接接合等により固定されており、下端は連結材を介
して隣接する保護管と相互に連結されている。A protective tube 15 is arranged around the outer periphery of each hollow fiber membrane module structure 9, and the upper end of this protective tube 15 is fixed to the lower surface of the μ holding plate 3 by welding or the like, and the lower end is fixed to the lower surface of the μ holding plate 3 through a connecting material. and are interconnected with adjacent protection tubes.
保冷管１５の下端開口直下には、逆洗用空気を噴出する
ノズル１６を有する空気配管１７が配設されている。ま
た、保護管１５の下端開口から進入した逆洗用空気を排
出するための空気抜孔１８が保３管１５の上端部に穿設
されている。An air pipe 17 having a nozzle 16 that blows out backwashing air is disposed directly below the opening at the lower end of the cold storage tube 15 . Further, an air vent hole 18 is provided at the upper end of the storage tube 15 for discharging backwashing air that has entered through the opening at the lower end of the protection tube 15 .
以上の構成において、被処理液は被処理液人口６から濾
過室に導入され、まず被処理液入口に対向して設けた分
散整流板２０に衝突して流入動圧が低減された後に、各
保３管１５の下端開口に案内され、中空糸膜１０の表面
を通過するときクラッドなどの固形分が分離除去されて
濾過される。In the above configuration, the liquid to be treated is introduced into the filtration chamber from the liquid to be treated 6, and first collides with the dispersion rectifier plate 20 provided opposite the inlet of the liquid to be treated to reduce the inflow dynamic pressure. It is guided to the opening at the lower end of the storage container 15, and as it passes through the surface of the hollow fiber membrane 10, solids such as crud are separated and filtered.
濾過された処理液は中空糸膜の中空部分を通り各中空糸
膜モジュール１１の中心部に設けた集水管に流入し、さ
らに支持板３の取付口１３を経由して処理液室５に流入
し、そして処理液出口１９を通り系外へ移送される。The filtered treatment liquid passes through the hollow part of the hollow fiber membrane and flows into the water collection pipe provided at the center of each hollow fiber membrane module 11, and further flows into the treatment liquid chamber 5 via the attachment port 13 of the support plate 3. The processed liquid is then transferred to the outside of the system through the processing liquid outlet 19.
この濾過操作を長時間実施すると、中空糸Ｗｉ１０の表
面には濾過されて残留したクラッド等の固形物が多Ｇに
付着し、中空糸ｇ！ｉｏの目詰りが進行し濾過性能が低
下する。そこで、逆洗とバブリングの操作を一定時間経
過毎に実施し、目詰り成分を除去する操作が必要となる
。If this filtration operation is carried out for a long time, solid matter such as cladding remaining after filtration will adhere to the surface of the hollow fiber Wi10, and the hollow fiber G! The clogging of the IO progresses and the filtration performance decreases. Therefore, it is necessary to perform backwashing and bubbling operations at regular intervals to remove clogging components.
逆洗バブリング操作は、まず処理液出口１９に接続した
空気注入口２１から高圧空気を送入することにより処理
液室５内に残留していた処理液を中空糸ＦＪ１０の内側
から外側へ逆流させる。逆流によって増加した水量は、
開放されたベントノズル８から′１：１流する。次に、
空気配管１７のノズル１６から空気を流出させ、各保護
管１５内に逆洗用の気泡流を発生させて中空糸Ｆ１１０
に機械的なｆｆｉ ！７１を与える。保護管１５内に進
入した気泡は、保護管１５の上部に設けた空気抜孔１８
から管外に排出される。逆洗のために濾過室内に送給さ
れた処理水はドレン排出ロアから系外に排出される。In the backwash bubbling operation, first, high-pressure air is introduced from the air inlet 21 connected to the processing liquid outlet 19 to cause the processing liquid remaining in the processing liquid chamber 5 to flow back from the inside of the hollow fiber FJ10 to the outside. . The amount of water increased by backflow is
'1:1 flow from the open vent nozzle 8. next,
Air is discharged from the nozzle 16 of the air pipe 17 to generate a bubble flow for backwashing in each protective tube 15, and the hollow fiber F110
mechanical ffi! Give 71. Air bubbles that have entered the protection tube 15 are removed through the air vent hole 18 provided at the top of the protection tube 15.
is discharged outside the tube. The treated water sent into the filtration chamber for backwashing is discharged to the outside of the system from the drain discharge lower.
この逆洗バブリング操作により、中空糸膜１０の外表面
に付着していたクラッド等の固形物は除去され、中空糸
膜１０は正規の濾過性能を回復し、再び′Ｉａ過操作に
供される。Through this backwash bubbling operation, solid matter such as crud attached to the outer surface of the hollow fiber membrane 10 is removed, the hollow fiber membrane 10 recovers its normal filtration performance, and is again subjected to the 'Ia filtration operation. .
（発明が解決しようとする問題点）
従来の中空糸膜′ａ過装置においては、被処理液流入口
６が濾過容器１の底部に配設されており、ｎ）！ｆ１度
で流入した被処理液は、被処理液流入口６に対向して設
けられた分散整流板２０によっである程度はその動圧が
Ｍ衝され、濾過容器底部に均一に分散され、各保護管１
５の下端開口に配分されるようになっている。(Problems to be Solved by the Invention) In the conventional hollow fiber membrane filtration apparatus, the liquid to be treated inlet 6 is disposed at the bottom of the filtration container 1, and n)! The liquid to be treated flowing in at f1 degree has its dynamic pressure M to some extent by the dispersion rectifier plate 20 provided opposite the inlet 6 for the liquid to be treated, and is uniformly dispersed at the bottom of the filtration container. Protection tube 1
It is arranged to be distributed to the lower end opening of No.5.
しかし、被処理液の一部は矢印で示すように濾過容器１
底部の鏡板内面に沿って流れ、保護管１５の下端開口部
に近い中空糸膜モジュール構造体９に半径方向から衝突
する形で保護管１５に流入する場合がある。この半径方
向の流れにより中空糸膜モジュール構造体９に流力振動
が生じ、この振動によって中空糸ｒＱ１０が相互に不規
則に接触して損傷し、結果的に中空糸膜モジュール構造
体９の寿命を低下させる可能性があり、また濾過室４内
の被処理液の流れの乱れによって処理流量分布も不均一
化し、濾過処理効率が低下し、運転の経済性も低下する
。すなわち、一部の中空糸膜１０に濾過面積負荷が集中
する結果、その部分の中空糸膜１０の濾過性能および寿
命を急激に低下せしめ、濾過材の早期交換が必要となる
不経済性があった。However, a part of the liquid to be treated is transferred to the filter container 1 as shown by the arrow.
It may flow along the inner surface of the end plate at the bottom and flow into the protection tube 15 in such a way that it collides with the hollow fiber membrane module structure 9 near the lower end opening of the protection tube 15 from the radial direction. This radial flow causes fluid vibration in the hollow fiber membrane module structure 9, and this vibration causes the hollow fibers rQ10 to contact each other irregularly and be damaged, resulting in the lifespan of the hollow fiber membrane module structure 9. In addition, the turbulence in the flow of the liquid to be treated in the filtration chamber 4 may cause the treatment flow rate distribution to become non-uniform, resulting in a decrease in the filtration efficiency and the economical efficiency of operation. That is, as a result of the filtration area load being concentrated on a part of the hollow fiber membrane 10, the filtration performance and life of the hollow fiber membrane 10 in that part are rapidly reduced, and there is an uneconomical situation in which the filter medium needs to be replaced early. Ta.
本発明は、上記問題点を解決するためになされたもので
あり、各中空糸膜モジュール構造体へ流入する被処理液
の流量分布が均一であり、かつ流れの乱れが少ない濾過
容器の構造を与えることにより、流力撮動の発生が少な
く、そのため濾過材である中空糸膜の損傷が少なく、長
期にわたって寿命と濾過処理効率を良好に維持できる中
空糸膜濾過装置を提供することを目的とする。The present invention has been made to solve the above problems, and provides a structure of a filtration container in which the flow rate distribution of the liquid to be treated flowing into each hollow fiber membrane module structure is uniform and the flow is less turbulent. The purpose of the present invention is to provide a hollow fiber membrane filtration device that can reduce the occurrence of hydrodynamic absorption, thereby causing less damage to the hollow fiber membrane that is the filtration material, and that can maintain good service life and filtration efficiency over a long period of time. do.
（問題点を解決するための手段）
本発明に係る中空糸膜濾過装置は、密閉容器内を支持板
によって濾過室と処理液室とに区画し、上記支持板に吊
設支持され濾過室内に垂設された複数の中空糸膜モジュ
ール構造体を有する中空糸膜濾過装置において、密閉容
器側壁上部に、濾過室に通じる被処理液流入口を設け、
前記密閉容器内の濾過室に内筒を配設して密閉容器側壁
と内筒間に被処理液を案内するダウンカマ部を形成し、
前記内筒の上部には複数の空気抜孔を穿設する一方、上
記内局内に振動抑止用保護板を介装し、この保護板に穿
設された案内孔に各中空糸膜モジュール構造体を遊嵌さ
せて構成する。(Means for Solving the Problems) The hollow fiber membrane filtration device according to the present invention has a closed container partitioned into a filtration chamber and a processing liquid chamber by a support plate, and the hollow fiber membrane filtration device is suspended and supported by the support plate and is placed inside the filtration chamber. In a hollow fiber membrane filtration device having a plurality of vertically installed hollow fiber membrane module structures, an inlet for a liquid to be treated leading to a filtration chamber is provided in the upper part of a side wall of the closed container,
disposing an inner cylinder in the filtration chamber in the sealed container to form a downcomer portion for guiding the liquid to be treated between the side wall of the sealed container and the inner cylinder;
A plurality of air vent holes are bored in the upper part of the inner tube, and a protection plate for vibration suppression is interposed in the inner tube, and each hollow fiber membrane module structure is inserted into the guide hole bored in the protection plate. It is configured by loosely fitting it.
（作用）
上記構成の中空糸膜濾過装置においては、濾過容器側壁
上部に被処理液流入口が取り付けられ、また側壁内面側
にダウンカマ部を形成する内筒を配設しているため、流
入した被処理液の動圧は内筒の外表面全体で緩衝され、
かつダウンカマ部を下降する間に整流化され乱れのない
流れとなり、次に被処理液は内筒下縁全周で内側に反転
して上昇し、各中空糸膜モジュール構造体に均一に案内
される。流入した被処理液は、内筒の高さに相当するダ
ウンカマ部の全長において充分に整流化されるため、中
空糸膜モジュール構造体に対する半径方向の流れによる
流力振動の発生が効果的に抑制される。(Function) In the hollow fiber membrane filtration device configured as described above, the inlet for the liquid to be treated is attached to the upper part of the side wall of the filtration container, and an inner cylinder forming a downcomer portion is provided on the inner surface of the side wall. The dynamic pressure of the liquid to be treated is buffered over the entire outer surface of the inner cylinder.
In addition, while descending through the downcomer section, the flow becomes rectified and undisturbed, and then the liquid to be treated turns inward around the entire lower edge of the inner cylinder and rises, and is uniformly guided to each hollow fiber membrane module structure. Ru. The flowing liquid to be treated is sufficiently rectified over the entire length of the downcomer section, which corresponds to the height of the inner cylinder, effectively suppressing the occurrence of fluid vibration due to the flow in the radial direction on the hollow fiber membrane module structure. be done.
また、中空糸膜モジュール構造体を遊嵌する案内孔を穿
設した振動抑止用の保護板を中空糸膜モジュール構造体
の継手位置に配設しているため、中空糸膜モジュール構
造体の横撮れが拘束され互いに接触して損傷することが
なく、長期に渡り寿命および濾過処理効率を良好に維持
することが可能となる。In addition, a protection plate for vibration suppression with a guide hole into which the hollow fiber membrane module structure is loosely fitted is provided at the joint position of the hollow fiber membrane module structure, so that the This prevents them from coming into contact with each other and causing damage, making it possible to maintain good service life and filtration efficiency over a long period of time.
（実浦例）
次に、本発明の一実施例について添付図面、第１図を参
照して説明する。なお、第２図に示す従来例と同一部品
には同一符号を付して説明は省略する。(Minoura Example) Next, an embodiment of the present invention will be described with reference to the accompanying drawings and FIG. Note that parts that are the same as those in the conventional example shown in FIG. 2 are designated by the same reference numerals, and explanations thereof will be omitted.
第１図において、濾過容器１と蓋板２とに挟持された支
持板３に支持された中空糸膜モジュール構造体９が濾過
室４内に多数垂設されている。その中空糸膜モジュール
構造体９は内筒２２内に収容されている。この内筒２２
は、濾過容器１内に収容されて２重筒構造をなし、密閉
容器側壁と内筒２２間に環状のダウンカマ部２５を形成
する。In FIG. 1, a large number of hollow fiber membrane module structures 9 supported by a support plate 3 sandwiched between a filtration container 1 and a lid plate 2 are vertically installed in a filtration chamber 4. As shown in FIG. The hollow fiber membrane module structure 9 is housed within the inner cylinder 22. This inner cylinder 22
is accommodated in the filtration container 1 to form a double cylinder structure, and an annular downcomer portion 25 is formed between the side wall of the closed container and the inner cylinder 22.
内筒２２の下部は、サポートレグ２３を介して濾過容器
１底部の鏡板に固定される。一方、内筒２２の上端は、
支持板３の下面に穿設した取付！ｉ／ｌ ２４に嵌装さ
れることにより内筒２２の変形が防止されている。また
、内筒２２の上部同上には、複数の空気抜孔１８が設け
られている。さらに、被処理液流入口６は濾過容器１の
側壁上部に設けられ、ダウンカマ部２５に連通している
。The lower part of the inner cylinder 22 is fixed to the end plate at the bottom of the filtration container 1 via a support leg 23. On the other hand, the upper end of the inner cylinder 22 is
Installation by drilling into the bottom surface of the support plate 3! By being fitted into the i/l 24, deformation of the inner cylinder 22 is prevented. Further, a plurality of air vent holes 18 are provided at the upper portion of the inner cylinder 22 . Further, the liquid to be treated inlet 6 is provided at the upper part of the side wall of the filtration container 1 and communicates with the downcomer section 25 .
また、内筒２２の内面には、中空糸膜モジュール構造体
９の振動を抑止するための保護板２６が設けられている
。保護板２６は、中空糸膜モジュール構造体９の外径よ
りも若干大きな直径を有する多数の案内孔２７を有して
おり、各案内孔２７内に中空糸膜モジュール４１３３体
９が挿通されている。保護板２６は、中空糸膜モジュー
ル構造体９の中空糸膜モジュール１１を各段に接続した
継手１２の位置に配設される。第１図の実施例は、各継
手１２の位置に対応して保護板２６を内筒２２の内面に
３段にわたって各段毎に取り付けた例を示しているが、
各段毎に必ずしも取付ける必要はない。Furthermore, a protection plate 26 for suppressing vibration of the hollow fiber membrane module structure 9 is provided on the inner surface of the inner cylinder 22 . The protection plate 26 has a large number of guide holes 27 having a diameter slightly larger than the outer diameter of the hollow fiber membrane module structure 9, and the hollow fiber membrane module 4133 body 9 is inserted into each guide hole 27. There is. The protection plate 26 is disposed at the joint 12 that connects the hollow fiber membrane modules 11 of the hollow fiber membrane module structure 9 to each stage. The embodiment shown in FIG. 1 shows an example in which the protection plates 26 are attached to the inner surface of the inner cylinder 22 in three stages corresponding to the positions of the respective joints 12.
It is not necessarily necessary to attach it to each stage.
上記構成の中空糸膜濾過装置において、被処理液流入口
６から流入した被処理液は内筒２２の外面でその動圧が
緩衝され、次に環状に形成されたダウンカマ部２５を下
降する間に整流され、さらに内筒２２の下端から濾過苗
４内に反転して上昇し、各中空糸膜モジュールＭＩＩａ
体９に均一に案内されて、中空糸膜１０表面においてク
ラッド等の固形物が減退分離される。処理液は中空糸膜
１０の中空部を上昇し、中空糸膜モジュール１１の集水
管を通り処理液室５に流入し、最終的に処理液出口１９
を経て系外へ排出される。In the hollow fiber membrane filtration device configured as described above, the liquid to be treated flows in from the liquid to be treated inlet 6, its dynamic pressure is buffered on the outer surface of the inner cylinder 22, and then the liquid flows down the downcomer portion 25 formed in an annular shape. The flow is further rectified from the lower end of the inner cylinder 22 into the filtration seedling 4 and rises, and each hollow fiber membrane module MIIa
Solids such as cladding are reduced and separated on the surface of the hollow fiber membrane 10 by being guided uniformly by the body 9 . The treatment liquid rises through the hollow part of the hollow fiber membrane 10, passes through the water collection pipe of the hollow fiber membrane module 11, flows into the treatment liquid chamber 5, and finally flows into the treatment liquid outlet 19.
is discharged from the system.
所定時間、線通処理を継続し、中空糸膜１０に目詰りが
生じたときは従来と同様な操作で逆洗処理を実施する。The wire threading process is continued for a predetermined period of time, and when the hollow fiber membrane 10 becomes clogged, backwashing process is performed in the same manner as in the conventional method.
空気配管１７のノズル１６から噴出した逆洗用の空気は
気泡となって上界し、中空糸膜１０に機械的な振動を与
えて目詰り成分を除去する。内筒２２上部に達した気泡
は、内ｎ２２の上部に穿設した空気抜孔１８から排出さ
れる。The air for backwashing ejected from the nozzle 16 of the air pipe 17 becomes bubbles and rises above, giving mechanical vibration to the hollow fiber membrane 10 to remove clogging components. The air bubbles that have reached the upper part of the inner cylinder 22 are discharged from an air vent hole 18 formed in the upper part of the inner cylinder 22.
本実施例によれば、濾過容器１側壁上部に被処理液流入
口６を設け、さらに側壁内面側にダウンカマ部２５を配
設しているため、流入した被処理液は、ダウンカマ部２
５で充分整流化され、半径方向の流れの乱れが少ない。According to this embodiment, the liquid to be treated inlet 6 is provided at the upper part of the side wall of the filtration container 1, and the downcomer part 25 is further provided on the inner surface of the sidewall, so that the liquid to be treated flows into the downcomer part 2.
5, the flow is sufficiently rectified and there is little turbulence in the flow in the radial direction.
したがって、中空糸膜モジュール構造体９が流体振動に
よって損傷することが防止される。Therefore, the hollow fiber membrane module structure 9 is prevented from being damaged by fluid vibration.
また、中空糸膜モジュール構造体９の横振れを拘束する
保護板２６が数段に渡って設けられているため、逆洗操
作時においても、逆洗用気泡等によって中空糸膜モジュ
ール１１が相互に接触して損傷することが少なく、長期
に渡り濾過材の寿命と濾過処理効率を良好に維持するこ
とが可能となった。In addition, since the protective plates 26 that restrain the lateral vibration of the hollow fiber membrane module structure 9 are provided in several stages, even during backwashing operations, the hollow fiber membrane modules 11 are mutually separated due to backwashing air bubbles, etc. The filter material is less likely to be damaged by contact with the filter material, making it possible to maintain the service life and filtration efficiency of the filter material over a long period of time.
また、本実施例の中空糸膜濾過装置によれば、被処理液
の整流機能を有する内ｆ！２２が設けられ、また中空糸
膜モジュール構造体９の半径方向の変位を防止するため
の保護板２６が設けられているため、従来の保護管１５
に相当する部材は省略することができる。したがって、
内部構造が簡略化され、製造コストを低減することがで
きる。Moreover, according to the hollow fiber membrane filtration apparatus of this embodiment, the inner f! 22 and a protection plate 26 for preventing displacement of the hollow fiber membrane module structure 9 in the radial direction.
The members corresponding to can be omitted. therefore,
The internal structure is simplified and manufacturing costs can be reduced.
（発明の効果〕
以上の説明で明らかな通り、本発明に係る中空糸膜濾過
装置によれば、濾過容器内に内筒を設け、被処理水流入
口を濾過容器側壁上部に配設し、側壁と内筒とで形成さ
れるダウンカマ部を被処理水が流下するように構成した
ため、被処理水はダウンカマ部において充分整流化され
、各中空糸膜モジュール構造体にほぼ均一な平行流とな
って流入する。また、中空糸膜モジュール構造体の水平
方向の振動を抑止する保護板が継手位置に設けられてい
るため逆洗時においても中空糸膜モジュール構造体が相
互に振動によって接触し損傷することが少ない。(Effects of the Invention) As is clear from the above explanation, according to the hollow fiber membrane filtration device according to the present invention, an inner cylinder is provided in the filtration container, an inlet for water to be treated is arranged at the upper part of the side wall of the filtration container, and Since the downcomer part formed by the and inner cylinder is configured so that the water to be treated flows down, the water to be treated is sufficiently rectified in the downcomer part, and flows almost uniformly in parallel to each hollow fiber membrane module structure. In addition, since a protective plate is provided at the joint position to suppress horizontal vibration of the hollow fiber membrane module structure, the hollow fiber membrane module structures may come into contact with each other due to vibration and be damaged during backwashing. There aren't many things.
したがって、濾過室内における処理流ｍ分布が均一化さ
れ、各中空糸膜の消耗割合も均一化され、濾過材令体と
しての寿命と濾過処理効率を長期間に渡って良好に維持
することが可能となり、中空糸膜濾過装置の信頼性の向
上に大きく寄与する。Therefore, the treated flow m distribution in the filtration chamber is made uniform, and the wear rate of each hollow fiber membrane is also made uniform, making it possible to maintain the service life of the filter material and the filtration efficiency for a long period of time. This greatly contributes to improving the reliability of the hollow fiber membrane filtration device.
第１図は本発明の中空糸膜濾過装置の一実施例を示すｉ
高面図、第２図は従来の中空糸膜濾過装置の構造例を示
す縦断面図である。
１・・・濾過容器、２・・・蓋板、３・・・支持板、４
・・・濾過室、５・・・処理液室、６・・・被処理液流
入口、７・・・ドレン排出口、８・・・ベントノズル、
９・・・中空糸膜モジュール構造体、１０・・・中空糸
膜、１１・・・中空糸膜モジュール、１２・・・継手、
１３・・・取付口、１４・・・押え板、１５・・・保護
管、１６・・・ノズル、１７・・・空気配管、１８・・
・空気抜孔、１９・・・処理液出口、２０・・・分散整
流板、２１・・・空気注入口、２２・・・内筒、２３・
・・サポートレグ、２４・・・取付溝、２５・・・ダウ
ンカマ部、２６・・・保護板、２７・・・案内孔。
代理人弁理士 則 近 憲 佑
同 三 俣 弘 文＄ ｌ 図FIG. 1 shows an embodiment of the hollow fiber membrane filtration device of the present invention.
The top view and FIG. 2 are longitudinal sectional views showing a structural example of a conventional hollow fiber membrane filtration device. 1...Filtering container, 2...Lid plate, 3...Support plate, 4
...filtration chamber, 5...processing liquid chamber, 6...processed liquid inlet, 7...drain outlet, 8...vent nozzle,
9... Hollow fiber membrane module structure, 10... Hollow fiber membrane, 11... Hollow fiber membrane module, 12... Joint,
13... Mounting port, 14... Holding plate, 15... Protection tube, 16... Nozzle, 17... Air piping, 18...
- Air vent hole, 19... Processing liquid outlet, 20... Dispersion rectifier plate, 21... Air inlet, 22... Inner cylinder, 23...
... Support leg, 24 ... Mounting groove, 25 ... Downcomer part, 26 ... Protection plate, 27 ... Guide hole. Representative Patent Attorney Noriyuki Chika Yudo Hirofumi Mimata $l Figure
Claims (1)
区画し、上記支持板に吊設支持され濾過室内に垂設され
た複数の中空糸膜モジュール構造体を有する中空糸膜濾
過装置において、密閉容器側壁上部に、濾過室に通じる
被処理液流入口を設け、前記密閉容器内の濾過室に内筒
を配設して密閉容器側壁と内筒間に被処理液を案内する
ダウンカマ部を形成し、前記内筒の上部には複数の空気
抜孔を穿設する一方、上記内筒内に振動抑止用保護板を
介装し、この保護板に穿設された案内孔に各中空糸膜モ
ジュール構造体を遊嵌させたことを特徴とする中空糸膜
濾過装置。 ２、振動抑止用保護板は内筒内の中空糸膜モジュール構
造体の継手位置に設けられた特許請求の範囲第１項記載
の中空糸膜濾過装置。[Claims] 1. The inside of the closed container is divided into a filtration chamber and a processing liquid chamber by a support plate, and a plurality of hollow fiber membrane module structures are suspended and supported by the support plate and vertically installed in the filtration chamber. In the hollow fiber membrane filtration device, an inlet for the liquid to be treated that communicates with the filtration chamber is provided in the upper part of the side wall of the closed container, and an inner cylinder is disposed in the filtration chamber in the closed container, so that the inner cylinder is covered between the side wall of the closed container and the inner cylinder. A downcomer portion for guiding the processing liquid is formed, and a plurality of air vent holes are formed in the upper part of the inner cylinder, and a vibration suppression protection plate is interposed in the inner cylinder, and the protection plate is provided with holes. A hollow fiber membrane filtration device characterized in that each hollow fiber membrane module structure is loosely fitted into a guide hole. 2. The hollow fiber membrane filtration device according to claim 1, wherein the vibration suppression protection plate is provided at a joint position of the hollow fiber membrane module structure within the inner cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61228252A JPS6384607A (en) | 1986-09-29 | 1986-09-29 | Hollow yarn membrane filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61228252A JPS6384607A (en) | 1986-09-29 | 1986-09-29 | Hollow yarn membrane filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6384607A true JPS6384607A (en) | 1988-04-15 |
Family
ID=16873553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61228252A Pending JPS6384607A (en) | 1986-09-29 | 1986-09-29 | Hollow yarn membrane filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6384607A (en) |
-
1986
- 1986-09-29 JP JP61228252A patent/JPS6384607A/en active Pending
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