JP2000084553A5 - Membrane separation device and membrane separation method - Google Patents
Membrane separation device and membrane separation method Download PDFInfo
- Publication number
- JP2000084553A5 JP2000084553A5 JP1998257210A JP25721098A JP2000084553A5 JP 2000084553 A5 JP2000084553 A5 JP 2000084553A5 JP 1998257210 A JP1998257210 A JP 1998257210A JP 25721098 A JP25721098 A JP 25721098A JP 2000084553 A5 JP2000084553 A5 JP 2000084553A5
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- JP
- Japan
- Prior art keywords
- membrane
- membrane separation
- separation
- gas
- separation device
- 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.)
- Granted
Links
- 239000012528 membrane Substances 0.000 title description 55
- 238000000926 separation method Methods 0.000 title description 41
- 239000007788 liquid Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000012510 hollow fiber Substances 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Description
【特許請求の範囲】
【請求項１】 分離膜の膜面が鉛直方向になるように配設された平型の膜モジュールと、前記分離膜の下方に設けられて気体を散気し、該気体により生起される気液混合流により前記分離膜の膜面洗浄を行うための散気装置と、該散気装置より散気される気体を分離膜の膜面に導くための遮蔽壁とを備えて処理槽内に設置される膜分離装置であって、膜分離装置の上方から見て、前記分離膜が相対した少なくとも一対の遮閉壁の内側に位置するとともに、前記遮閉壁に水を通過させることができる通水孔が設けられている膜分離装置。
【請求項２】 通水孔の総面積が、遮閉壁の総側面積の１〜６０％である、請求項１記載の膜分離装置。
【請求項３】 請求項１または２記載の膜分離装置を用いて、散気装置からの気体の吐出量を膜分離装置の水平方向の断面積あたり１０〜１５０Ｎｍ３／ｍ２／ｈｒとする、膜分離方法。
【請求項４】 請求項１または２記載の膜分離装置を用いて、膜モジュールにおける、散気装置からの気体により生起される気液混合流の水平方向の平均移動流速を０．０１〜１．５ｍ／ｓｅｃとする、膜分離方法。
[Claims]
1. A flat membrane module arranged so that the membrane surface of the separation membrane is in the vertical direction, and a gas provided below the separation membrane to disperse a gas, and the gas generated by the gas. The treatment tank is provided with an air diffuser for cleaning the membrane surface of the separation membrane by a liquid mixing flow and a shielding wall for guiding the gas dissipated from the air diffuser to the membrane surface of the separation membrane. It is a membrane separation device to be installed, and when viewed from above the membrane separation device, the separation membrane is located inside at least a pair of closed walls facing each other, and water can pass through the closed walls. A membrane separation device provided with a water passage hole.
2. The membrane separation device according to claim 1, wherein the total area of the water passage holes is 1 to 60% of the total area of the closed wall.
3. Using the membrane separation device according to claim 1 or 2, the amount of gas discharged from the air diffuser is set to 10 to 150 Nm 3 / m 2 / hr per horizontal cross-sectional area of the membrane separation device. , Membrane separation method.
4. Using the membrane separation device according to claim 1 or 2, the average moving flow velocity in the horizontal direction of the gas-liquid mixed flow generated by the gas from the air diffuser in the membrane module is 0.01 to 1. Membrane separation method at .5 m / sec.
【０００１】
【発明の属する技術分野】
本発明は、水処理にて、固液分離を行う膜分離装置、及びこれを用いた膜分離方法に関するものである。
[0001]
[Technical field to which the invention belongs]
The present invention relates to a membrane separation device that performs solid-liquid separation by water treatment , and a membrane separation method using the same .
【０００６】
【発明が解決しようとする課題】
本発明は、前述した不都合を解決するためになされたものであり、長期にわたる濾過を行っても懸濁物による膜面の閉塞が少ない膜分離装置、及びこれを用いた膜分離方法を提供することを目的とする。
0006
[Problems to be Solved by the Invention]
The present invention has been made to solve the disadvantages described above, clogging is less membrane separation apparatus of the film surface due to be performed long-term filtration suspensions, and provides a membrane separation method using the same The purpose is.
【０００７】
【課題を解決するための手段】
本発明の要旨は、分離膜の膜面が鉛直方向になるように配設された平型の膜モジュールと、前記分離膜の下方に設けられて気体を散気し、該気体により生起される気液混合流により前記分離膜の膜面洗浄を行うための散気装置と、該散気装置より散気される気体を分離膜の膜面に導くための遮蔽壁とを備えて処理槽内に設置される膜分離装置であって、膜分離装置の上方から見て、前記分離膜が相対した少なくとも一対の遮閉壁の内側に位置するとともに、前記遮閉壁に水を通過させることができる通水孔が設けられている膜分離装置にある。
該膜分離装置においては、通水孔の総面積が遮閉壁の総側面積の１〜６０％であることが好ましい。
本発明の膜分離方法においては、該膜分離装置を構成する散気装置からの気体の吐出量が、該膜分離装置の水平方向の断面積あたり１０〜１５０Ｎｍ３／ｍ２／ｈｒである。
また、本発明の膜分離方法においては、該膜モジュールにおける、散気装置からの気体により生起される気液混合流の水平方向の平均移動流速が、０．０１〜１．５ｍ／ｓｅｃである。
本発明で使用する分離膜は、ポリオレフィン製中空糸膜であることが好ましく、該分離膜が中空糸を緯糸とする編織物からなり、該中空糸の端部の開口状態を保ちつつ膜固定部材のスリットに液密に固定されてなる中空糸膜であって、このスリットの断面形状がほぼ矩形である中空糸膜であることが好ましい。
0007
[Means for solving problems]
The gist of the present invention is a flat membrane module arranged so that the membrane surface of the separation membrane is in the vertical direction, and a gas is dispersed below the separation membrane and generated by the gas. The inside of the treatment tank is provided with an air diffuser for cleaning the membrane surface of the separation membrane by a gas-liquid mixed flow and a shielding wall for guiding the gas dissipated from the air diffuser to the membrane surface of the separation membrane. It is a membrane separation device installed in the above, and when viewed from above the membrane separation device, the separation membrane is located inside at least a pair of facing closed walls, and water can pass through the closed walls. It is in a membrane separation device provided with a water passage hole.
In membrane separation device, it is preferable that the total area of the water-passing holes is 1 to 60% of the total side area of the shielding閉壁.
In the membrane separation method of the present invention, the discharge amount of the gas from the diffuser constituting a membrane separation device is a 10~150Nm 3 / m 2 / hr per sectional area in the horizontal direction of the membrane separation device.
In the membrane separation method of the present invention, in the membrane module, the average moving velocity in the horizontal direction of the gas-liquid mixed flow which is caused by the gas from the diffuser, is 0.01~1.5m / sec ..
The separation membrane used in the present invention is preferably a hollow fiber membrane made of polyolefin, and the separation membrane is made of a knitted fabric having a hollow fiber as a weft, and a membrane fixing member while maintaining an open state at the end of the hollow fiber. a hollow fiber membrane made of fixed liquid-tightly to the slit, it is preferable the cross-sectional shape of the slit is a hollow fiber membrane is substantially rectangular.
【００４５】
【発明の効果】
本発明の膜分離装置、及び膜分離方法によれば、分離膜の表面近傍の気液混合流を乱流とし、分離膜の膜面の洗浄効率を高めることによって、長期間にわたって膜面の目詰まりが少なく、高い流量で固液分離を行うことができる。
0045
【Effect of the invention】
According to the membrane separation device and the membrane separation method of the present invention, the gas-liquid mixed flow near the surface of the separation membrane is made into a turbulent flow to improve the cleaning efficiency of the membrane surface of the separation membrane, so that the membrane surface is grained for a long period of time. There is little clogging, and solid-liquid separation can be performed at a high flow rate.
Priority Applications (14)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25721098A JP4285805B2 (en) | 1998-09-10 | 1998-09-10 | Membrane separation device and membrane separation method |
| US09/372,179 US6280626B1 (en) | 1998-08-12 | 1999-08-11 | Membrane separator assembly and method of cleaning the assembly utilizing gas diffuser underneath the assembly |
| EP99937049A EP1105205B8 (en) | 1998-08-12 | 1999-08-12 | Gas diffuser for solid-liquid separation membrane assembly |
| DE69940776T DE69940776D1 (en) | 1998-08-12 | 1999-08-12 | GAS DISTRIBUTOR FOR MEMBRANE UNIT FOR THE SEPARATION OF SOLIDS AND LIQUIDS |
| CNB998107832A CN1151863C (en) | 1998-08-12 | 1999-08-12 | Membrane assembly for solid-liquid separation method of cleaning the same, and detergent |
| EP20070025007 EP1911510B1 (en) | 1998-08-12 | 1999-08-12 | A membrane separator assembly |
| DE69942845T DE69942845D1 (en) | 1998-08-12 | 1999-08-12 | Membrane separator |
| PCT/JP1999/004376 WO2000009245A2 (en) | 1998-08-12 | 1999-08-12 | Membrane assembly for solid-liquid separation, method of cleaning the same, and detergent |
| EP20070025006 EP1911509A3 (en) | 1998-08-12 | 1999-08-12 | A detergent for separating membrane |
| AU51973/99A AU5197399A (en) | 1998-08-12 | 1999-08-12 | Membrane assembly for solid-liquid separation, method of cleaning the same, and detergent |
| TW088113780A TW423992B (en) | 1998-08-12 | 1999-08-12 | Film separation device and diffusing apparatus, cleaner and cleaning method of separation device |
| KR20017001779A KR100429960B1 (en) | 1998-08-12 | 1999-08-12 | Membrane assembly for solid-liquid separation, method of cleaning the same, and detergent |
| US09/612,234 US6328886B1 (en) | 1998-08-12 | 2000-07-07 | Gas diffuser for aeration vessel of membrane assembly |
| US09/612,240 US6325938B1 (en) | 1998-08-12 | 2000-07-07 | Method of cleaning membrane assembly with detergent |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25721098A JP4285805B2 (en) | 1998-09-10 | 1998-09-10 | Membrane separation device and membrane separation method |
| US09/372,179 US6280626B1 (en) | 1998-08-12 | 1999-08-11 | Membrane separator assembly and method of cleaning the assembly utilizing gas diffuser underneath the assembly |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2000084553A JP2000084553A (en) | 2000-03-28 |
| JP2000084553A5 true JP2000084553A5 (en) | 2005-10-27 |
| JP4285805B2 JP4285805B2 (en) | 2009-06-24 |
Family
ID=26543105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25721098A Expired - Fee Related JP4285805B2 (en) | 1998-08-12 | 1998-09-10 | Membrane separation device and membrane separation method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4285805B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5059438B2 (en) * | 2007-02-07 | 2012-10-24 | 三菱レイヨン株式会社 | Membrane separator |
| EP2147714A4 (en) | 2007-05-14 | 2012-05-30 | Mitsubishi Rayon Co | Membrane filter unit |
| JP4614188B2 (en) * | 2007-05-15 | 2011-01-19 | 株式会社日立プラントテクノロジー | Immersion flat membrane filtration device |
| JPWO2009118786A1 (en) * | 2008-03-27 | 2011-07-21 | 株式会社クボタ | Membrane module and membrane cassette |
| JP2010247086A (en) * | 2009-04-16 | 2010-11-04 | Unitika Ltd | Flat membrane module and water treatment apparatus using the same |
| JP5472312B2 (en) | 2009-10-26 | 2014-04-16 | 株式会社明電舎 | Membrane module, membrane unit and membrane separator |
-
1998
- 1998-09-10 JP JP25721098A patent/JP4285805B2/en not_active Expired - Fee Related
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