JPS59154113A - Ultrafiltering method - Google Patents
Ultrafiltering methodInfo
- Publication number
- JPS59154113A JPS59154113A JP2622583A JP2622583A JPS59154113A JP S59154113 A JPS59154113 A JP S59154113A JP 2622583 A JP2622583 A JP 2622583A JP 2622583 A JP2622583 A JP 2622583A JP S59154113 A JPS59154113 A JP S59154113A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- liquid
- membrane
- filtration membrane
- pump
- 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
- 238000000034 method Methods 0.000 title description 11
- 239000012528 membrane Substances 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 238000001914 filtration Methods 0.000 claims description 25
- 238000000108 ultra-filtration Methods 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 abstract 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000011550 stock solution Substances 0.000 description 12
- 239000000243 solution Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は循環式限外濾過において濾過膜固有の許容圧力
内の設定された適正圧力下で安定して原液を循環させ凝
縮並びに透過させるもので濾過膜の破壊を防止すると同
時に安定した品質の濃縮液、透過液を得る方法に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION In circulating ultrafiltration, the present invention stably circulates, condenses, and permeates the stock solution under a set appropriate pressure within the permissible pressure unique to the filtration membrane, thereby preventing destruction of the filtration membrane. At the same time, the present invention relates to a method for obtaining a concentrated liquid and a permeated liquid of stable quality.
循環式限外濾過は原液を限外濾過膜に循環供給し濃縮液
、透過液を得る方法であるが濃縮が進むにつれ原液の粘
度が著しく上昇する。原液の種類により異なるが3倍か
ら5倍の粘度の上昇がみられ°る。この原液粘度の上昇
に伴ない濾過膜内通過時の通過抵抗が増大し濾過膜内圧
力が急激に増加し濾過膜を破壊する。Circulating ultrafiltration is a method in which a concentrated solution and a permeated solution are obtained by circulating a stock solution through an ultrafiltration membrane, but as concentration progresses, the viscosity of the stock solution increases significantly. Although it varies depending on the type of stock solution, an increase in viscosity of 3 to 5 times is observed. As the viscosity of the stock solution increases, the resistance during passage through the filtration membrane increases, and the pressure inside the filtration membrane increases rapidly, destroying the filtration membrane.
この濾過膜の破壊を防止するため濾過膜への原液供給量
を調整する必要がある。In order to prevent this destruction of the filtration membrane, it is necessary to adjust the amount of stock solution supplied to the filtration membrane.
従来の循環式限外p過方法は、第1図に示す如く濾過膜
(5)の循環配管(3)にリリーフ弁または流量調整弁
(7)を設は圧力センサー(4)にて検出される圧力に
より手動もしくは自動的にリリーフ弁または流量調整弁
(7)を調整しリリーフ配管(8)により原液タンク(
1)にリターンさせ濾過膜(5)に供給される原液量を
コントロールする方法である。In the conventional circulating ultrap filter method, as shown in Fig. 1, a relief valve or a flow rate adjustment valve (7) is installed in the circulation pipe (3) of the filtration membrane (5), and the pressure is detected by a pressure sensor (4). The relief valve or flow rate adjustment valve (7) is adjusted manually or automatically according to the pressure applied to the stock solution tank (
In this method, the amount of stock solution returned to step 1) and supplied to the filtration membrane (5) is controlled.
この方法は動力の浪費が大きく、原液の種類によっては
泡立ちを促進させ濾過効率を低下させる。This method wastes a lot of power, and depending on the type of stock solution, it may promote foaming and reduce filtration efficiency.
又、IJ IJ−フ弁、流量調整弁(7)の構造によっ
ては流量のコントロールが難かしく、原液の温度と昇に
より原液に変質が生じ濾過膜(5)を破壊させることも
あり安定した濾過工程が行われなかった。In addition, depending on the structure of the IJ IJ valve and the flow rate adjustment valve (7), it is difficult to control the flow rate, and the temperature of the stock solution may change due to the rise in temperature and destroy the filtration membrane (5), making it impossible to achieve stable filtration. The process was not performed.
本発明はこれらの欠点を解消し濾過膜を破壊することな
く品質の安定した濃縮液並びに透過液を得ると同時に動
力の節減が計かれる方法を提供するものである。The present invention solves these drawbacks and provides a method that can obtain a concentrated liquid and a permeated liquid of stable quality without destroying the filtration membrane, and at the same time save power.
本発明の方法を第2図に従って一例を詳細に説明する。An example of the method of the present invention will be explained in detail with reference to FIG.
濾過膜を破壊させることなく常に適正圧力で安定した濾
過を行なうため圧力センサー(4)にて圧力を検出、設
定圧力を常に保つようポンプ(2)の回転数をコントロ
ールすることにより濾過膜への原液供給鑞を祠祭する。In order to always perform stable filtration at an appropriate pressure without destroying the filtration membrane, the pressure is detected by the pressure sensor (4), and the rotation speed of the pump (2) is controlled to maintain the set pressure at all times. Enshrine the undiluted solution supply.
この場合ポンプ(2)は容積式のものが好ましい。In this case, the pump (2) is preferably of a positive displacement type.
圧力センサー(4)にて検出される圧力変化によりポン
プ(2)をコントロールする方法の一例をあげれば圧力
ポテンショ′メーターにより圧力変化を電圧もしくは低
流の変化に変僕しインバーターあるいはスピードコント
ローラーでポンプ(2)の駆動モーターの回転数を変化
させるか、パイロットモーターにより変速機変速比を変
化させポンプ(2)の回転数をコントロールさせる。An example of a method for controlling the pump (2) based on pressure changes detected by the pressure sensor (4) is to convert pressure changes into voltage or low flow changes using a pressure potentiometer, and then control the pump using an inverter or speed controller. The rotation speed of the pump (2) is controlled by changing the rotation speed of the drive motor (2) or by changing the transmission gear ratio using the pilot motor.
本発明の方法により得られる濃縮液、透過液は熱変化に
よる品質の変化もなく、良質の安定した品質のものとな
る。The concentrated liquid and permeated liquid obtained by the method of the present invention have good and stable quality without any change in quality due to thermal changes.
また、泡立ちによる濾過効率の低下もなく不必要な濾過
膜の一次側から原液タンクへのリターン分もなく必要最
小限の動力により安定した循環p過が可能である。In addition, there is no reduction in filtration efficiency due to foaming, and there is no unnecessary return flow from the primary side of the filtration membrane to the stock solution tank, allowing stable circulating p-filtration with the minimum necessary power.
第1図は従来の循環式限外p過装置の概略図、第2図は
本発明の循環式定圧限外−過方法を説明するための装置
の概略図である。
(1)原液タンク、 (2) ポンプ、(3)循
環配官、 (4)圧力センサー、(5)濾過膜、
(6)戻り配管、(7)IJ!J−フ弁又は
流量調整弁、(8) リリーフ配管。FIG. 1 is a schematic diagram of a conventional circulating type ultra-particle filtration apparatus, and FIG. 2 is a schematic diagram of an apparatus for explaining the circulating type constant pressure ultra-particle filtration method of the present invention. (1) Stock solution tank, (2) Pump, (3) Circulation system, (4) Pressure sensor, (5) Filtration membrane,
(6) Return piping, (7) IJ! J-F valve or flow rate adjustment valve, (8) Relief piping.
Claims (1)
動に追従し、ポンプの濾過膜への供給量をポンプ回転数
を自動的にコントロールさせることにより常に濾過膜に
加わる圧力を適正圧に保ちながら安定した品質の濃縮液
、透過液を得ることを特徴とする限外p過方法。The pressure applied to the filtration membrane is always maintained at the appropriate pressure by detecting the filtration membrane inlet pressure of the circulating ultrafiltration device, following its fluctuations, and automatically controlling the pump rotation speed to control the supply amount to the filtration membrane. An ultrapolar filtration method that is characterized by obtaining concentrated liquid and permeated liquid of stable quality while maintaining the same quality.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2622583A JPS59154113A (en) | 1983-02-21 | 1983-02-21 | Ultrafiltering method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2622583A JPS59154113A (en) | 1983-02-21 | 1983-02-21 | Ultrafiltering method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS59154113A true JPS59154113A (en) | 1984-09-03 |
Family
ID=12187426
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2622583A Pending JPS59154113A (en) | 1983-02-21 | 1983-02-21 | Ultrafiltering method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59154113A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6186903A (en) * | 1984-10-03 | 1986-05-02 | Asahi Chem Ind Co Ltd | Ultrafiltration apparatus |
JPS62121667A (en) * | 1985-11-22 | 1987-06-02 | Iijima Seimitsu Kogyo Kk | Centrifugal type continuous filter apparatus using semipermeable membrane |
US4806132A (en) * | 1987-06-23 | 1989-02-21 | Union Carbide Corporation | Turndown control method for membrane separation systems |
US9295307B2 (en) | 2010-08-11 | 2016-03-29 | Ykk Corporation | Slide fastener and method for manufacturing the same |
JP2020163347A (en) * | 2019-03-29 | 2020-10-08 | 三浦工業株式会社 | Water treatment system |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5510084A (en) * | 1978-07-10 | 1980-01-24 | Narasaki Zosen Kk | Pressure control method of pump |
JPS5626509A (en) * | 1979-08-13 | 1981-03-14 | Secr Defence Brit | Filtering apparatus |
-
1983
- 1983-02-21 JP JP2622583A patent/JPS59154113A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5510084A (en) * | 1978-07-10 | 1980-01-24 | Narasaki Zosen Kk | Pressure control method of pump |
JPS5626509A (en) * | 1979-08-13 | 1981-03-14 | Secr Defence Brit | Filtering apparatus |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6186903A (en) * | 1984-10-03 | 1986-05-02 | Asahi Chem Ind Co Ltd | Ultrafiltration apparatus |
JPS62121667A (en) * | 1985-11-22 | 1987-06-02 | Iijima Seimitsu Kogyo Kk | Centrifugal type continuous filter apparatus using semipermeable membrane |
US4806132A (en) * | 1987-06-23 | 1989-02-21 | Union Carbide Corporation | Turndown control method for membrane separation systems |
US9295307B2 (en) | 2010-08-11 | 2016-03-29 | Ykk Corporation | Slide fastener and method for manufacturing the same |
JP2020163347A (en) * | 2019-03-29 | 2020-10-08 | 三浦工業株式会社 | Water treatment system |
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