JPH0437620Y2 - - Google Patents
Info
- Publication number
- JPH0437620Y2 JPH0437620Y2 JP7512187U JP7512187U JPH0437620Y2 JP H0437620 Y2 JPH0437620 Y2 JP H0437620Y2 JP 7512187 U JP7512187 U JP 7512187U JP 7512187 U JP7512187 U JP 7512187U JP H0437620 Y2 JPH0437620 Y2 JP H0437620Y2
- Authority
- JP
- Japan
- Prior art keywords
- hollow fiber
- fiber membrane
- container
- liquid
- treated
- 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
Links
- 239000012510 hollow fiber Substances 0.000 claims description 47
- 239000012528 membrane Substances 0.000 claims description 47
- 239000007788 liquid Substances 0.000 claims description 36
- 238000001914 filtration Methods 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000011001 backwashing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- 238000011045 prefiltration Methods 0.000 description 4
- 238000000746 purification Methods 0.000 description 3
- 239000008213 purified water Substances 0.000 description 3
- 239000002901 radioactive waste 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
- 230000007423 decrease Effects 0.000 description 2
- 239000003456 ion exchange resin Substances 0.000 description 2
- 229920003303 ion-exchange polymer Polymers 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 239000006185 dispersion 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
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Description
【考案の詳細な説明】
〔考案の目的〕
(産業上の利用分野)
本考案は原子力発電プラントの復水浄化系など
に適した非助材型ろ過装置に係り、特に被処理液
の整流効果を向上させた中空糸膜型ろ過装置に関
する。[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The present invention relates to a non-auxiliary material type filtration device suitable for condensate purification systems of nuclear power plants, etc. This invention relates to a hollow fiber membrane type filtration device with improved properties.
(従来の技術)
沸騰水型原子力発電プラントにおいては放射線
被曝低減および燃料の健全性を図るため原子炉内
に各種のクラツドが持込まれないように対策が抗
じられている。その対策の一環として最近の原子
力発電プラントでは復水浄化系のクラツド除去性
能向上のために混床式イオン交換塔に加え粉末イ
オン交換樹脂をプリコートしたタイプのろ過器を
前置ろ過装置として設置している。(Prior Art) In boiling water nuclear power plants, measures are being taken to prevent various types of crud from being brought into the reactor in order to reduce radiation exposure and maintain the integrity of the fuel. As part of these countermeasures, recent nuclear power plants have installed filters pre-coated with powdered ion exchange resin as prefiltration devices in addition to mixed bed ion exchange towers to improve crud removal performance in condensate purification systems. ing.
ところが、この種の前置ろ過装置からは二次放
射性廃棄物として多量の使用済みイオン交換樹脂
が発生するため、廃樹脂の貯蔵、処理および運転
コストなどについて改善の余地がある。つまり、
二次放射性廃棄物の発生量および所要スペースが
少なく、かつランニングコストが安価な非助材型
前置ろ過装置の開発が要求されている。 However, since this type of prefiltration device generates a large amount of used ion exchange resin as secondary radioactive waste, there is room for improvement in the storage, processing, and operating costs of waste resin. In other words,
There is a need for the development of a non-auxiliary material type prefiltration device that generates less secondary radioactive waste, requires less space, and has low running costs.
このような要求に対して最近では放射性廃棄物
処理設備に適用されている中空糸膜型ろ過器を復
水浄化系の非助材型前置ろ過装置として用いる試
みがなされている。 In response to these demands, attempts have recently been made to use hollow fiber membrane filters, which are used in radioactive waste treatment facilities, as non-auxiliary prefiltration devices for condensate purification systems.
第3図は従来のこの種の中空糸膜型復水ろ過装
置を示すもので、以下これについて説明する。 FIG. 3 shows a conventional hollow fiber membrane type condensate filtration device of this type, which will be explained below.
第3図において符号1は容器蓋2との間が支持
板3によつて仕切られた密閉構造の筒状容器であ
る。この容器1の底板には被処理液の流入管4お
よびドレン管5が、上部側面にはベント管6がそ
れぞれ設けられている。前記蓋2には逆洗用空気
流入管を兼ねる処理液の流出管7が設けられてい
る。 In FIG. 3, reference numeral 1 denotes a cylindrical container having a closed structure and partitioned from a container lid 2 by a support plate 3. As shown in FIG. An inlet pipe 4 and a drain pipe 5 for the liquid to be treated are provided on the bottom plate of the container 1, and a vent pipe 6 is provided on the upper side surface. The lid 2 is provided with a processing liquid outflow pipe 7 which also serves as a backwashing air inflow pipe.
前記容器1内には前記支持板3に押え板8を介
して上端が固定された多数の中空糸膜13を束ね
た中空糸膜モジユール構造体9が配置され、前記
モジユール構造体9の外周部には保護管10が配
設されている。前記保護管10の下端は連結部1
1を介して相互に連結されている。また、前記モ
ジユール構造体9の下方には多数のノズル12A
を有する空気配管が設けられている。 Inside the container 1, a hollow fiber membrane module structure 9 is arranged, which is a bundle of a large number of hollow fiber membranes 13 whose upper ends are fixed to the support plate 3 via a presser plate 8. A protection tube 10 is disposed in the housing. The lower end of the protective tube 10 is connected to the connecting portion 1
They are interconnected via 1. Further, below the module structure 9, there are a number of nozzles 12A.
Air piping is provided with a
上記構成の中空糸膜型ろ過装置において、被処
理液は流入管4から容器1内に流入し、前記保護
管10内に流れ込む。すると、中空糸膜13は一
種のパルプフイルタであるので被処理液のうち水
だけを通し、クラツド等の固形物は中空膜13の
表面に付着して分離し除去される。中空糸膜13
内に浸透した水は前記モジユール構造体9の内部
を通過して浄化水(処理液)として支持板3の上
側に流れる。そして、この浄化水は蓋2の処理液
の流出管7から外部に排出される。 In the hollow fiber membrane type filtration device configured as described above, the liquid to be treated flows into the container 1 from the inflow pipe 4 and then into the protection pipe 10 . Then, since the hollow fiber membrane 13 is a type of pulp filter, only water of the liquid to be treated passes through, and solid substances such as crud adhere to the surface of the hollow membrane 13 and are separated and removed. Hollow fiber membrane 13
The water that has permeated inside passes through the inside of the module structure 9 and flows to the upper side of the support plate 3 as purified water (processing liquid). Then, this purified water is discharged to the outside from the processing liquid outflow pipe 7 of the lid 2.
この復水ろ過装置で復水のろ過運転を長時間実
施すると、中空糸膜13の表面にはろ過されて残
つたクラツド等の異物が多く付着し、中空糸膜1
3のろ過性能が低下する。そこで、中空糸膜13
のろ過性能を回復させるために逆洗操作が一定期
間ごとに行われる。 When this condensate filtration device performs condensate filtration operation for a long time, many foreign substances such as crud remaining after filtration adhere to the surface of the hollow fiber membrane 13.
The filtration performance of No. 3 decreases. Therefore, the hollow fiber membrane 13
A backwash operation is performed at regular intervals to restore the filtration performance of the filter.
この逆洗操作の際にはバブリング操作も平行し
て行われる。この逆洗操作に際しては、まず処理
液の流出管7から容器1内に高圧空気を注入し、
蓋2内の浄化水を中空糸膜13の内側から外側に
逆流させる。この際、ベント管6を開放し逆流に
よつて増加した水を排出するとともに空気配管1
2のノズル12Aから空気を流出させ、前記保護
管10内に気泡を生じさせて中空糸膜13を振動
させる。前記保護管10内の気泡はその保護管1
0の上部に設けた孔から保護管10外に放出さ
れ、保護管10内が空気で満たされることが防止
される。 During this backwashing operation, a bubbling operation is also performed in parallel. In this backwashing operation, first, high pressure air is injected into the container 1 from the processing liquid outflow pipe 7,
The purified water in the lid 2 is made to flow back from the inside of the hollow fiber membrane 13 to the outside. At this time, the vent pipe 6 is opened to drain the water that has increased due to backflow, and the air pipe 1
Air is flowed out from the second nozzle 12A to generate air bubbles in the protective tube 10 and vibrate the hollow fiber membrane 13. Air bubbles in the protection tube 10
The air is discharged to the outside of the protective tube 10 from the hole provided in the upper part of the protective tube 10, thereby preventing the inside of the protective tube 10 from being filled with air.
この逆洗操作によつて中空糸膜13の表面に付
着したクラツドは除去され、中空糸膜13は正規
のろ過性能を回復するとともに容器1内の被処理
液はドレン管5から排出されてドレン処理され
る。 Through this backwashing operation, crud adhering to the surface of the hollow fiber membrane 13 is removed, the hollow fiber membrane 13 recovers its normal filtration performance, and the liquid to be treated in the container 1 is discharged from the drain pipe 5 and drained. It is processed.
(考案が解決しようとする問題点)
従来の中空糸膜型ろ過装置は前述したように中
空糸膜13へ被処理液を流入する流入管4が容器
1の中心線からはずれた位置の底板に設けられ、
また、ドレン管5が容器1の中心線に沿つた真下
の底板に設けられている。さらに、被処理液が流
入管4から流入して中空糸膜モジユール構造体9
へ直撃しないように流入管4の張出し部に緩衝板
14が設けられている。そのため、流入管4を通
つて流入される被処理液は緩衝板14の下側に設
けられた開口から向きが変えられて流出し容器1
の内側に沿つて上方へ流れる。(Problems to be solved by the invention) As mentioned above, in the conventional hollow fiber membrane type filtration device, the inflow pipe 4 that flows the liquid to be treated into the hollow fiber membrane 13 is located on the bottom plate at a position away from the center line of the container 1. provided,
Further, a drain pipe 5 is provided on the bottom plate directly below the container 1 along the center line. Further, the liquid to be treated flows into the hollow fiber membrane module structure 9 through the inflow pipe 4.
A buffer plate 14 is provided on the overhanging portion of the inflow pipe 4 to prevent direct impact. Therefore, the liquid to be treated flowing in through the inflow pipe 4 is diverted from the opening provided on the lower side of the buffer plate 14 and flows out into the container 1.
flows upward along the inside of the
しかしながら、流入管4は容器1の中心に位置
していないため容器1と保護管10との下端では
偏流を生じ、中空糸膜モジユール構造体9には不
均一で異なつた被処理液の流量が流れる問題点が
ある。 However, since the inflow pipe 4 is not located at the center of the container 1, a biased flow occurs at the lower ends of the container 1 and the protection tube 10, and the hollow fiber membrane module structure 9 receives uneven and different flow rates of the liquid to be treated. There are issues that arise.
本考案は上記問題点を解決するためになされた
もので、中空糸膜モジユール構造体へ流れ込む被
処理液の均一性と装置の小形化を向上させた中空
糸膜型ろ過装置を提供することにある。 The present invention was made to solve the above problems, and aims to provide a hollow fiber membrane type filtration device that improves the uniformity of the liquid to be treated flowing into the hollow fiber membrane module structure and reduces the size of the device. be.
(問題点を解決するための手段)
本考案は容器内に支持板を介して複数の中空糸
膜モジユール構造体を垂設し、前記容器の上部側
面にベント管を接続し、被処理液の流入管および
ドレン管を容器底板に、処理液の流出管を容器蓋
にそれぞれ取付けるとともに、前記被処理液の流
入管の開口と前記中空糸膜モジユール構造体の下
部との間の前記容器内の側面に環状邪魔板を取付
けてなる中空糸膜型ろ過装置である。
(Means for solving the problem) The present invention has a plurality of hollow fiber membrane module structures vertically installed in a container via a support plate, a vent pipe is connected to the upper side of the container, and the liquid to be treated is removed. An inflow pipe and a drain pipe are attached to the bottom plate of the container, and an outflow pipe for the processing liquid is attached to the container lid, and a portion of the inside of the container between the opening of the inflow pipe for the liquid to be treated and the lower part of the hollow fiber membrane module structure is attached. This is a hollow fiber membrane type filtration device with an annular baffle plate attached to the side.
(作用)
被処理液は容器の底板に取付けられた流入管か
ら容器内に流入し、容器内下方の環状邪魔板近傍
に流れ出る。この邪魔板によつて被処理液は一様
に分散し流れの向きを上方に変えて中空糸膜モジ
ユール構造体内に流入する。このモジユール構造
体の中空糸膜の表面に被処理液中のクラツドが付
着し中空糸膜内を通過した処理液は流出管から容
器外に流出する。このため、被処理液の偏向流に
より流量の低下を生じることなく各中空糸膜への
被処理液の流れを均一にすることができる。(Operation) The liquid to be treated flows into the container from an inflow pipe attached to the bottom plate of the container, and flows out near the annular baffle plate in the lower part of the container. The baffle plate uniformly disperses the liquid to be treated, changes the flow direction upward, and flows into the hollow fiber membrane module structure. Cruds in the liquid to be treated adhere to the surface of the hollow fiber membrane of this modular structure, and the treated liquid that has passed through the hollow fiber membrane flows out of the container from the outflow pipe. Therefore, the flow of the liquid to be treated to each hollow fiber membrane can be made uniform without reducing the flow rate due to the deflected flow of the liquid to be treated.
(実施例)
第1図および第2図を参照しながら本考案に係
る中空糸膜型ろ過装置の一実施例を説明する。な
お、第1図において第3図と同一部分には同一符
号を付して重複する部分の説明を省略する。(Example) An example of a hollow fiber membrane type filtration device according to the present invention will be described with reference to FIGS. 1 and 2. In FIG. 1, the same parts as in FIG. 3 are given the same reference numerals, and explanations of the overlapping parts are omitted.
本考案が従来例と異なる点は第1図から明らか
なように容器1内の被処理液の流入管4の開口に
取付けた緩衝板14と保護管10の下端との間の
下部周側面に環状邪魔板15を設けたことにあ
る。環状邪魔板15には第2図に示したように多
数の小孔16が設けられている。 The difference between the present invention and the conventional example is that, as is clear from FIG. This is because the annular baffle plate 15 is provided. The annular baffle plate 15 is provided with a large number of small holes 16, as shown in FIG.
しかして、上記構成の中空糸膜型ろ過装置にお
いて、被処理液は流入管4から緩衝板14に案内
されて容器1内に流入し邪魔板15に衝突せしめ
られる。この邪魔板15で被処理液は流れの向き
が変えられて空気配管12側に案内される一方、
多数の小孔16により上方への流れが分散され、
空気配管12の近傍を流れながら中空糸膜型モジ
ユール構造体9内に流入する。このモジユール構
造体9内の中空糸膜13の表面に被処理液中のク
ラツドが付着し中空糸膜13内を通過した処理液
は流出管7から前記容器1外に流出する。このと
き、被処理液の偏向流は分散されて均一流となり
各中空糸膜13に案内されるため、中空糸膜13
の下端の下向き流速はほぼ均一となり、より流量
の低下を生じることなく中空糸膜13への被処理
液の流れを等しくすることができる。 In the hollow fiber membrane filtration apparatus having the above structure, the liquid to be treated is guided from the inflow pipe 4 to the buffer plate 14, flows into the container 1, and collides with the baffle plate 15. The flow direction of the liquid to be treated is changed by the baffle plate 15 and guided toward the air pipe 12, while
The upward flow is dispersed by a large number of small holes 16,
It flows into the hollow fiber membrane type module structure 9 while flowing near the air pipe 12 . Crads in the liquid to be treated adhere to the surface of the hollow fiber membrane 13 in the module structure 9, and the treated liquid that has passed through the hollow fiber membrane 13 flows out of the container 1 from the outflow pipe 7. At this time, the deflected flow of the liquid to be treated is dispersed into a uniform flow and guided to each hollow fiber membrane 13.
The downward flow velocity at the lower end becomes almost uniform, and the flow of the liquid to be treated to the hollow fiber membrane 13 can be made equal without causing a decrease in the flow rate.
特に、邪魔板15を設けることによつて容器1
内に流入した被処理液の流れを分散させ、整流化
させる効果がある。また、第2図に示したように
邪魔板15に小孔16を中空糸膜モジユールの下
方に設けることによつて被処理液の流れの分散効
果を高め、かつドレン効率を向上させることがで
きる。なお、邪魔板15の形状、厚さおよび取付
角度などは必要に応じて任意に選択することがで
きる。また、邪魔板15は単数または複数使用す
ることができ、それらの配列も任意に選択するこ
とができる。 In particular, by providing the baffle plate 15, the container 1
This has the effect of dispersing and rectifying the flow of the liquid to be treated that has flowed into the chamber. Further, as shown in FIG. 2, by providing small holes 16 in the baffle plate 15 below the hollow fiber membrane module, it is possible to enhance the dispersion effect of the flow of the liquid to be treated and improve the drain efficiency. . Note that the shape, thickness, mounting angle, etc. of the baffle plate 15 can be arbitrarily selected as necessary. Moreover, one or more baffle plates 15 can be used, and their arrangement can also be arbitrarily selected.
本考案によれば被処理液を容器の下部内周面お
よび底部に邪魔板を設ける事により整流効果が増
加する。これによつて被処理液の流れが均一にな
り、中空糸膜によるクラツド等の除去量が一定に
なる。従つて、中空糸膜の逆洗期間を延長するこ
とが可能であり、それにともない中空糸膜の寿命
を長くすることができる。また、邪魔板を設ける
ことによつて被処理液の整流効果を増大させるこ
とができるので、流入管と中空糸膜モジユールと
の距離を短くすることができる。従つて、容器が
コンパクトになり、製作費用の減少だけでなく、
運搬および据付け上の制約が緩和され、経済性の
向上ができる。
According to the present invention, the rectifying effect of the liquid to be treated is increased by providing a baffle plate on the lower inner peripheral surface and bottom of the container. This makes the flow of the liquid to be treated uniform, and the amount of crud etc. removed by the hollow fiber membrane becomes constant. Therefore, it is possible to extend the backwashing period of the hollow fiber membrane, and accordingly, the life of the hollow fiber membrane can be extended. Further, by providing the baffle plate, the rectifying effect of the liquid to be treated can be increased, so the distance between the inflow pipe and the hollow fiber membrane module can be shortened. Therefore, the container becomes more compact, which not only reduces manufacturing costs, but also
Restrictions on transportation and installation are eased, and economic efficiency can be improved.
第1図は本考案に係る中空糸膜型ろ過装置の一
実施例を示す縦断面図、第2図は第1図の底面か
ら見た横断面図、第3図は従来の中空糸膜型ろ過
装置を示す縦断面図である。
1……容器、2……蓋、3……支持板、4……
流入管、5……ドレン管、6……ベント管、7…
…流出管、8……押え板、9……中空糸膜モジユ
ール構造体、10……保護管、11……連結部、
12……空気配管、13……中空糸膜、14……
緩衝板、15……邪魔板、16……小孔。
Figure 1 is a longitudinal sectional view showing an embodiment of the hollow fiber membrane type filtration device according to the present invention, Figure 2 is a cross sectional view seen from the bottom of Figure 1, and Figure 3 is a conventional hollow fiber membrane type filtration device. It is a longitudinal cross-sectional view showing a filtration device. 1... Container, 2... Lid, 3... Support plate, 4...
Inflow pipe, 5...Drain pipe, 6...Vent pipe, 7...
... Outflow pipe, 8 ... Holding plate, 9 ... Hollow fiber membrane module structure, 10 ... Protection tube, 11 ... Connection part,
12...Air piping, 13...Hollow fiber membrane, 14...
Buffer plate, 15... baffle plate, 16... small hole.
Claims (1)
ユール構造体を垂設し、前記容器の上部側面に
ベント管を接続し、被処理液の流入管およびド
レン管を容器底板に、処理液の流出管を容器蓋
にそれぞれ取付けるとともに前記被処理液の流
入管の開口と前記中空糸膜モジユール構造体の
下部との間の前記容器内の側面に環状邪魔板を
取付けてなる中空糸膜型ろ過装置。 2 前記邪魔板には多数の小孔が穿設されてなる
実用新案登録請求の範囲第1項記載の中空糸膜
型ろ過装置。[Claims for Utility Model Registration] 1. A plurality of hollow fiber membrane module structures are installed vertically in a container via a support plate, a vent pipe is connected to the upper side of the container, and an inlet pipe and a drain pipe for the liquid to be treated are connected to the upper side of the container. A pipe is attached to the bottom plate of the container, an outflow pipe for the processing liquid is attached to the container lid, and an annular baffle plate is installed on the side surface of the container between the opening of the inflow pipe for the liquid to be treated and the lower part of the hollow fiber membrane module structure. Hollow fiber membrane type filtration device with attached. 2. The hollow fiber membrane type filtration device according to claim 1, wherein the baffle plate has a large number of small holes.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7512187U JPH0437620Y2 (en) | 1987-05-21 | 1987-05-21 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7512187U JPH0437620Y2 (en) | 1987-05-21 | 1987-05-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS63185402U JPS63185402U (en) | 1988-11-29 |
JPH0437620Y2 true JPH0437620Y2 (en) | 1992-09-03 |
Family
ID=30920969
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7512187U Expired JPH0437620Y2 (en) | 1987-05-21 | 1987-05-21 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0437620Y2 (en) |
-
1987
- 1987-05-21 JP JP7512187U patent/JPH0437620Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS63185402U (en) | 1988-11-29 |
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