JP2521350B2 - Cross flow filtration device - Google Patents
Cross flow filtration deviceInfo
- Publication number
- JP2521350B2 JP2521350B2 JP1105397A JP10539789A JP2521350B2 JP 2521350 B2 JP2521350 B2 JP 2521350B2 JP 1105397 A JP1105397 A JP 1105397A JP 10539789 A JP10539789 A JP 10539789A JP 2521350 B2 JP2521350 B2 JP 2521350B2
- Authority
- JP
- Japan
- Prior art keywords
- filter
- flow
- fluid
- filtration
- cross
- 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 - Lifetime
Links
- 238000009295 crossflow filtration Methods 0.000 title claims description 21
- 239000012530 fluid Substances 0.000 claims description 25
- 239000000706 filtrate Substances 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 7
- 238000001914 filtration Methods 0.000 description 26
- 230000000052 comparative effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000011001 backwashing Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 238000010008 shearing Methods 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000004278 EU approved seasoning Substances 0.000 description 1
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Filtration Of Liquid (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明はクロスフロー濾過装置に関する。TECHNICAL FIELD The present invention relates to a crossflow filtration device.
（従来技術） クロスフロー濾過は、被処理流体をフィルタの一側に
沿って流動させながら濾過を行うもので、フィルタ表面
への堆積ケークを被処理流体の平行流による剪断力にて
最小の値に保ち、安定した濾過を長期間維持しようとす
るものであり、被処理流体中に懸濁している数10Å〜数
10μｍといった微粒子の分離に適し、各種の分野で利用
されている。(Prior Art) In cross-flow filtration, a fluid to be treated is filtered while flowing along one side of a filter, and the accumulated cake on the filter surface is minimized by the shear force due to the parallel flow of the fluid to be treated. It is intended to maintain stable filtration for a long period of time, and it is suspended in the fluid to be treated.
It is suitable for separating fine particles of 10 μm and is used in various fields.
クロスフロー濾過は広い分野、例えば食品工業におけ
る各種飲料水、調味料等の仕上げ濾過、化学工業におけ
る各種プロセス液の精製濾過、機械工業における各種機
械油、メッキ液の再生濾過、生化学工業におけるバイオ
液、培養液の精製濾過、菌体の濃縮等に利用されてい
る。Cross-flow filtration is used in a wide range of fields, for example, various types of drinking water in the food industry, finishing filtration for seasonings, purification filtration of various process liquids in the chemical industry, various machine oils in the mechanical industry, regeneration filtration of plating solutions, biotechnology in the biochemical industry. It is used for the purification and filtration of liquids and cultures, and the concentration of bacterial cells.
クロスフロー濾過では、一般に、被処理流体を濾過器
へ連続的に供給して濾過器内のフィルタの一側に沿って
流動させ、被処理流体の一部をフィルタの他側へ透過さ
せて濾液として流出させるとともに、残液を濾過器へ循
環供給させる手段が採られている。また、このようなク
ロスフロー濾過を実施するには、第３図に示すクロスフ
ロー濾過装置が採用されている。In cross-flow filtration, generally, the fluid to be treated is continuously supplied to the filter to flow along one side of the filter in the filter, and a part of the fluid to be treated is permeated to the other side of the filter to obtain filtrate. And a means for circulating and supplying the residual liquid to the filter. In order to carry out such cross-flow filtration, the cross-flow filtration device shown in FIG. 3 is adopted.
当該クロスフロー濾過装置は、被処理流体の供給タン
ク１とクロスフロー濾過器２とを連結する循環管路３の
所定の部位に、被処理流体の循環流速を設定するための
１または複数の流速設定バルブ4a,4b,4cを介装した構成
のものである。The cross-flow filtration device has one or a plurality of flow rates for setting a circulation flow velocity of the treatment fluid at a predetermined portion of a circulation pipe line 3 that connects the supply tank 1 for the treatment fluid and the cross flow filter 2. The configuration valves 4a, 4b, 4c are interposed.
（発明が解決しようとする課題） ところで、この種のクロスフロー濾過においては、濾
過速度を長期間高いレベルに維持するには、濾過装置の
運転中にフィルタを間欠的に繰り返し逆洗する手段、ま
たはフィルタを透過する濾液の流出口を間欠的に繰り返
し閉鎖する手段が採られる。前者の逆洗手段は、フィル
タの濾液透過側（他側）から被処理流体の流動側（一
側）へ濾液、純水等の洗浄液を高圧状態で間欠的に供給
し、フィルタの一側に堆積しているケークを除去するも
のである。しかしながら、このようの逆洗手段は濾液を
ロスするとともに、被処理流体の濃縮には適さない。(Problems to be solved by the invention) By the way, in this type of cross-flow filtration, in order to maintain the filtration rate at a high level for a long period of time, means for intermittently backwashing the filter during operation of the filtration device, Alternatively, a means for intermittently and repeatedly closing the outlet of the filtrate passing through the filter is adopted. The former backwashing means intermittently supplies a cleaning liquid such as filtrate and pure water at a high pressure from the filtrate permeation side (other side) of the filter to the flow side (one side) of the fluid to be processed, and then to one side of the filter. It removes the cake that has accumulated. However, such backwashing means loses the filtrate and is not suitable for concentrating the fluid to be treated.
また、後者の濾液の流出口側を閉鎖する手段は、濾液
の流出を間欠的に停止させて被処理流体のケークに対す
る作用力を一時的に剪断力のみとし、フィルタの一側に
堆積しているケークを除去するものである。しかしなが
ら、このような閉鎖手段においては、フィルタの一側に
堆積したケークに加わる剪断力に起因する掃流作用は不
変であり、フィルタの両側の圧力が等しくなってケーク
に対するフィルタへの押付け力が弱まる分のケークしか
除去できない。Further, the latter means for closing the outlet side of the filtrate is to intermittently stop the outflow of the filtrate so that the acting force of the fluid to be treated on the cake is temporarily only the shearing force, and is accumulated on one side of the filter. This is to remove the existing cake. However, in such a closing means, the scavenging action due to the shearing force applied to the cake deposited on one side of the filter is invariable, and the pressures on both sides of the filter are equalized so that the pressing force of the filter against the cake is not increased. Only the weakening cake can be removed.
従って、本発明はこれらの問題に対処すべくなされた
もので、その目的とするところは、濾過流速を長期間高
いレベルに維持することができるクロスフロー濾過装置
を提供することにある。Therefore, the present invention has been made to address these problems, and an object of the present invention is to provide a cross-flow filtration device capable of maintaining a high filtration flow rate for a long period of time.
（課題を解決するための手段） 本発明はクロスフロー濾過装置、特に、被処理流体の
供給タンクとクロスフロー濾過器とを連結する循環管路
の所定の部位に前記被処理流体の循環流速を設定する１
または複数の流速設定バルブを介装してなり、前記被処
理流体を前記濾過器へ連続的に供給して同濾過器内のフ
ィルタの一側に沿って流動させ、前記被処理流体の一部
を前記フィルタの他側へ透過させて濾液として流出させ
るとともに、残液を前記濾過器へ循環供給させる形式の
クロスフロー濾過装置に関する。(Means for Solving the Problems) The present invention relates to a cross-flow filtration device, and in particular, a circulation flow velocity of the fluid to be treated is provided at a predetermined portion of a circulation pipe connecting a supply tank for the fluid to be treated and the cross-flow filter. Set 1
Alternatively, a plurality of flow rate setting valves are provided, and the fluid to be processed is continuously supplied to the filter to flow along one side of the filter in the filter, and a part of the fluid to be processed is provided. Relates to a cross-flow filtration device of the type in which the residual liquid is circulated and supplied to the filter while passing through the other side of the filter as a filtrate.
しかして、本発明に係るクロスフロー濾過装置は上記
した形式のクロスフロー濾過装置において、前記循環管
路に前記流速設定バルブを回避するバイパス管路を設け
るとともに、同バイパス管路に開閉バルブを介装したこ
とを特徴とするものである。Therefore, in the cross-flow filtration device according to the present invention, in the cross-flow filtration device of the type described above, a bypass pipe that avoids the flow velocity setting valve is provided in the circulation pipe, and an opening / closing valve is provided in the bypass pipe. It is characterized by wearing.
（発明の作用・効果） 本発明に係る濾過装置においては、バイパス管路に介
装した開閉バルブを操作してバイパス管路を間欠的に繰
返し閉鎖することにより、被処理流体の循環流速を間欠
的に繰返し増大させることができる。このため、開閉バ
ルブの操作により被処理流体の剪断力を間欠的に大きく
して、フィルタの一側に堆積しているケークを除去する
ことができ、上記した逆洗手段、および濾液の流出口の
閉鎖手段を採用する場合の問題点、すなわち、前者の逆
洗手段における濾液のロス、被処理流体の濃縮時の希釈
等の問題、後者の濾液の流出口の閉鎖手段におけるケー
ク除去能力の不足の問題を解消することができる。(Operation and Effect of the Invention) In the filtration device according to the present invention, the circulation flow velocity of the fluid to be processed is intermittently operated by operating the on-off valve interposed in the bypass pipe to intermittently and repeatedly close the bypass pipe. Can be repeatedly increased. Therefore, by operating the opening / closing valve, the shearing force of the fluid to be treated can be intermittently increased to remove the cake accumulated on one side of the filter. Problems when adopting the above closing means, namely, loss of filtrate in the former backwashing method, dilution during concentration of the fluid to be treated, etc., and lack of cake removal capacity in the closing means of the outlet of the latter filtrate. The problem of can be solved.
（実施例） （１）．クロスフロー濾過装置 本発明に係るクロスフロー濾過装置は第１図に示すも
ので、当該濾過装置は被処理流体の供給タンク11、濾過
器12、これら両者11、12を連結する循環管路13を備える
とともに、循環管路13に介装された循環ポンプ14と濾過
器12間と供給タンク11とを連結する還流管路15を備えて
いる。各管路13、15には流体の循環流速を設定するため
流速設定バルブ16a、16b、16cが介装されている。ま
た、各管路13、15には各流速設定バルブ16a〜16cを迂回
するバイパス管路17a、17b、17cが設けられていて、各
バイパス管路17a〜17cに開閉バルブ18a、18b、18cが介
装されている。(Example) (1). Cross-Flow Filtration Device The cross-flow filtration device according to the present invention is shown in FIG. 1, and the filtration device comprises a supply tank 11 for a fluid to be treated, a filter 12, and a circulation pipe line 13 connecting these both 11, 12. In addition to the above, a circulation pipe 14 is provided which connects between the circulation pump 14 and the filter 12 installed in the circulation pipe 13 and the supply tank 11. Flow rate setting valves 16a, 16b, 16c are provided in each of the pipelines 13, 15 for setting a circulation flow rate of the fluid. Further, bypass conduits 17a, 17b, 17c that bypass the flow velocity setting valves 16a to 16c are provided in the conduits 13 and 15, and opening / closing valves 18a, 18b, 18c are provided in the bypass conduits 17a to 17c. It is installed.
濾過器12は公知のクロスフロー濾過器であり、ケーシ
ング内に円筒状のセラミックフィルタ12aが収容されて
いて、被処理流体がフィルタ12aの外周に沿って長手方
向に流動し、この間流体の一部がフィルタ12aの内周側
に透過して濾液として流出管路19から流出する。なお、
流出管路19には濾液の流量設定バルブ19aが介装されて
いる。各開閉バルブ18a〜18cは電磁開閉バルブであり、
所定時間毎とに短時間開放される。なお、各流速設定バ
ルブ16a〜16c、バイパス管路17a〜17cおよび開閉バルブ
18a〜18cは任意の数でよく、必要によりそれらの数が設
定される。The filter 12 is a known cross-flow filter, in which a cylindrical ceramic filter 12a is housed in the casing, the fluid to be processed flows in the longitudinal direction along the outer periphery of the filter 12a, and part of the fluid during this period. Permeate to the inner peripheral side of the filter 12a and flow out from the outflow conduit 19 as a filtrate. In addition,
The outflow conduit 19 is provided with a filtrate flow rate setting valve 19a. Each on-off valve 18a-18c is an electromagnetic on-off valve,
It is opened for a short time every predetermined time. The flow velocity setting valves 16a to 16c, the bypass lines 17a to 17c and the opening / closing valves
18a to 18c may be any number, and those numbers are set as necessary.
（２）．濾過実験 被処理液として濃度0.5wt％の生イーストの懸濁液を
用いるとともに、濾過器として濾過面積0.047m2の円筒
状セラミックフィルタを収容してなる濾過器を採用し、
上記懸濁液を循環流速2m/secで循環させてフィルタの外
周に沿って流動させ、濾過圧力0.5kgf/cm2で濾過実験を
行った。濾過実験は第１図に示す濾過装置に下記に示す
３種類の異なる操作を施すことにより行い、各操作によ
る濾過時間と濾過流速との関係を第２図のグラフに示
す。(2). Filtration experiment A suspension of raw yeast with a concentration of 0.5 wt% was used as the liquid to be treated, and a filter containing a cylindrical ceramic filter with a filtration area of 0.047 m 2 was adopted as the filter.
The suspension was circulated at a circulation flow rate of 2 m / sec to flow along the outer periphery of the filter, and a filtration experiment was conducted at a filtration pressure of 0.5 kgf / cm 2 . The filtration experiment was carried out by applying the following three different operations to the filtration apparatus shown in FIG. 1, and the relationship between the filtration time and the filtration flow rate by each operation is shown in the graph of FIG.
（2a）．各バイパス管路17a、17bを５分間隔で10秒間間
欠的に繰返し開放させ、各バイパス管路17a、17bの開放
時の循環流速を5m/secとする（実施例） （2b）．濾液の流出管路19を５分間隔で10秒間間欠的に
繰返し閉鎖する（比較例１） （2c）．バイパス管路の全てを閉鎖し、初期設定された
状態を維持する（比較例２） 第２図のグラフから明らかなように、従来の標準のク
ロスフロー濾過方法に相当する比較例２においては濾過
流速が最も低いレベルに維持されるのに対し、本実施例
のクロスフロー濾過方法においては上記の濾過方法（比
較例２）に対しては勿論のこと、従来の濾液流出口閉鎖
手段を採用したクロスフロー濾過方法に相当する比較例
１に対しても、濾過流速がより高いレベルに維持され
る。(2a). Each bypass pipeline 17a, 17b is intermittently repeatedly opened at 5-minute intervals for 10 seconds, and the circulation flow velocity when opening each bypass pipeline 17a, 17b is 5 m / sec (Example) (2b). The outflow conduit 19 of the filtrate is intermittently and repeatedly closed at 5-minute intervals for 10 seconds (Comparative Example 1) (2c). All of the bypass pipelines are closed and the initial state is maintained (Comparative Example 2). As is clear from the graph of FIG. 2, in Comparative Example 2 corresponding to the conventional standard cross-flow filtration method, filtration is performed. While the flow velocity is maintained at the lowest level, in the cross-flow filtration method of the present embodiment, the conventional filtrate outlet closing means was adopted as well as the above-mentioned filtration method (Comparative Example 2). The filtration flow rate is maintained at a higher level also for Comparative Example 1 corresponding to the cross-flow filtration method.
第１図は本発明の一実施例に係る濾過装置の概略構成
図、第２図は濾過実験における濾過時間と濾過流速との
関係を示すグラフ、第３図は従来の濾過装置の概略構成
図である。 符号の説明 11……供給タンク、12……濾過器、13……循環管路、16
a〜16c……流速設定バルブ、17a〜17c……バイパス管
路、18a〜18c……開閉バルブ。FIG. 1 is a schematic configuration diagram of a filtration device according to an embodiment of the present invention, FIG. 2 is a graph showing a relationship between filtration time and filtration flow rate in a filtration experiment, and FIG. 3 is a schematic configuration diagram of a conventional filtration device. Is. Explanation of code 11 …… Supply tank, 12 …… Filter, 13 …… Circulating pipeline, 16
a-16c …… Flow rate setting valve, 17a-17c …… Bypass line, 18a-18c …… Open / close valve.
Claims (1)
過器とを連結する循環管路の所定の部位に前記被処理流
体の循環流速を設定する１または複数の流速設定バルブ
を介装してなり、前記被処理流体を前記濾過器へ連続的
に供給して同濾過器内のフィルタの一側に沿って流動さ
せ、前記被処理流体の一部を前記フィルタの他側へ透過
させて濾液として流出させるとともに、残液を前記濾過
器へ循環供給させるクロスフロー濾過装置において、前
記循環管路に前記流速設定バルブを回避するバイパス管
路を設けるとともに、同バイパス管路に開閉バルブを介
装したことを特徴とするクロスフロー濾過装置。1. A one or a plurality of flow rate setting valves for setting a circulation flow velocity of the fluid to be treated is provided at a predetermined portion of a circulation pipe connecting a supply tank for the fluid to be treated and a cross flow filter. , The fluid to be treated is continuously supplied to the filter to flow along one side of the filter in the filter, and a part of the fluid to be treated is permeated to the other side of the filter to obtain filtrate. In the cross-flow filtration device that circulates and supplies the residual liquid to the filter, a bypass pipe bypassing the flow rate setting valve is provided in the circulation pipe, and an opening / closing valve is installed in the bypass pipe. A cross-flow filtration device characterized in that
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1105397A JP2521350B2 (en) | 1989-04-25 | 1989-04-25 | Cross flow filtration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1105397A JP2521350B2 (en) | 1989-04-25 | 1989-04-25 | Cross flow filtration device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02284608A JPH02284608A (en) | 1990-11-22 |
| JP2521350B2 true JP2521350B2 (en) | 1996-08-07 |
Family
ID=14406503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1105397A Expired - Lifetime JP2521350B2 (en) | 1989-04-25 | 1989-04-25 | Cross flow filtration device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2521350B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4676266B2 (en) * | 2005-07-01 | 2011-04-27 | 大成建設株式会社 | Backwash system |
| JP7028908B2 (en) * | 2020-04-13 | 2022-03-02 | メタウォーター株式会社 | How to clean the filtration membrane |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62234515A (en) * | 1986-04-01 | 1987-10-14 | Kurita Water Ind Ltd | Operating method for precoating type parallel flow filter device |
-
1989
- 1989-04-25 JP JP1105397A patent/JP2521350B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02284608A (en) | 1990-11-22 |
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