JPH02102717A - Membrane separator for liquid - Google Patents
Membrane separator for liquidInfo
- Publication number
- JPH02102717A JPH02102717A JP63256679A JP25667988A JPH02102717A JP H02102717 A JPH02102717 A JP H02102717A JP 63256679 A JP63256679 A JP 63256679A JP 25667988 A JP25667988 A JP 25667988A JP H02102717 A JPH02102717 A JP H02102717A
- Authority
- JP
- Japan
- Prior art keywords
- membrane
- liquid
- permeated water
- treated
- membrane separation
- 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 claims abstract description 91
- 239000007788 liquid Substances 0.000 title claims description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 51
- 238000000926 separation method Methods 0.000 claims abstract description 39
- 239000012466 permeate Substances 0.000 claims description 3
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012510 hollow fiber Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/15—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces
- B01D33/21—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces with hollow filtering discs transversely mounted on a hollow rotary shaft
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/35—Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition
- B01D33/37—Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition in parallel connection
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、液体の膜分離装置に係り、特に精密口過膜、
限外口過膜などの膜を用いる液体の膜分離装置に関する
。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a liquid membrane separation device, and particularly to a precision filtration membrane,
The present invention relates to a liquid membrane separation device using a membrane such as an ultrafiltration membrane.
膜を用いた液体分離用膜モジュールとしては、中空糸型
、管状型、スパイラル型及びプレート・アンド・フレー
ム型と言われる固定平膜型がある。Membrane modules for liquid separation using membranes include fixed flat membrane types called hollow fiber types, tubular types, spiral types, and plate-and-frame types.
これらの液体分離用膜モジュールは、いずれも実質的に
固定されて用いられるものであり、被処理液を流動させ
、膜面の濃度分極を抑制させながら透過水を効率的に得
るものである。しかしながら、これらの膜モジュールは
、被処理液が５０ｃｐ以上の高粘度液になると、処理性
能が著しく低下し、液体分離の処理が困難となるばかり
でなく、被処理液を流動させ、加圧するためのエネルギ
ーが大きくなるという問題点がある。All of these liquid separation membrane modules are used in a substantially fixed manner, allowing the liquid to be treated to flow and efficiently obtaining permeated water while suppressing concentration polarization on the membrane surface. However, when the liquid to be treated becomes a highly viscous liquid of 50 cp or more, the processing performance of these membrane modules deteriorates significantly, making it difficult to separate the liquid. The problem is that the energy becomes large.
一方、液体分離用膜モジュールとして、回転円板膜を用
いる膜分離手段が試みられている。この膜分離手段は、
中空の回転軸の軸方向に、この回転軸と一体に回転する
円板膜を所定の間隔をおいて複数枚並列させたものであ
る。この膜分離手段を用いる場合には、この膜分離手段
を被処理液の液槽内に浸漬して回転させることによって
回転膜の膜透過水を前記回転軸の中空部に集水して、装
置外へ排出する。この装置は、回転円破膜自体の回転に
よって膜面の濃度分極を抑制できるので、被処理液を袖
の手段で流動させる必要がなく、低エネルギーで液体分
離を行うことができる利点がある。On the other hand, membrane separation means using a rotating disk membrane has been attempted as a membrane module for liquid separation. This membrane separation means is
A plurality of disc membranes that rotate together with the hollow rotating shaft are arranged in parallel at predetermined intervals in the axial direction of the rotating shaft. When using this membrane separation means, the membrane separation means is immersed in a liquid tank containing the liquid to be treated and rotated to collect the membrane-permeated water of the rotating membrane in the hollow part of the rotating shaft. Discharge outside. This device has the advantage that concentration polarization on the membrane surface can be suppressed by the rotation of the rotary circular rupture membrane itself, so there is no need to flow the liquid to be treated using sleeve means, and liquid separation can be performed with low energy.
しかしながら、上記の回転円板膜を用いる膜分離手段で
は、これを被処理液槽底部に設置することにより静水圧
での処理が可能となるが、回転軸を被処理液面に水平に
設置した場合、膜透過水は槽壁を貫通して得なければな
らず、膜の交換時には、貫通シール部も取りはずさなけ
ればならないなど、装置が複雑で、メンテナンスが煩雑
であった。However, with the membrane separation means using the above-mentioned rotating disk membrane, it is possible to perform treatment under hydrostatic pressure by installing it at the bottom of the liquid tank to be treated. In this case, membrane-permeated water had to be obtained by penetrating the tank wall, and when replacing the membrane, the penetrating seal part had to be removed as well, making the device complex and requiring troublesome maintenance.
これに対して、回転軸を被処理液面に垂直に設置し、膜
透過水が槽壁を貫通しないで得られる装置では、メンテ
ナンスは容易になるものの、被処理液面近くにまで膜を
セットしなければならず、膜透過に必要な圧力をかける
ため、被処理液を加圧するか、膜透過水側を減圧にする
必要がある。On the other hand, with a device in which the rotating shaft is installed perpendicular to the surface of the liquid to be treated, and the water permeated through the membrane can be obtained without penetrating the tank wall, maintenance is easier, but the membrane is set close to the surface of the liquid to be treated. In order to apply the pressure necessary for membrane permeation, it is necessary to pressurize the liquid to be treated or reduce the pressure on the membrane permeate side.
しかし、加圧する方法では、被処理液槽を密閉構造にし
なければならず、装置コストが高くなる。However, in the pressurizing method, the liquid tank to be treated must have a sealed structure, which increases the cost of the apparatus.
そこで、減圧にする方法が行われているが、この方法で
は、膜がセットしである液深により膜面の圧力が異なる
ため、場所により膜透過流速が異なり、多数枚の円板膜
を回転軸にセットしたときには、膜の汚れが不均一にな
り、そのため、膜面積が有効に使われなかったり、膜の
洗浄時期の判定が難しくなり、さらに、常に残圧で吸引
しているため、運転コストが大になっていた。Therefore, a method of reducing the pressure has been used, but in this method, the pressure on the membrane surface varies depending on the depth of the liquid at which the membrane is set, so the membrane permeation flow rate varies depending on the location, and multiple disk membranes are rotated. When the membrane is set on the shaft, the dirt on the membrane becomes uneven, resulting in the membrane area not being used effectively and making it difficult to determine when it is time to clean the membrane.Furthermore, since suction is always performed using residual pressure, operation The costs were increasing.
したがって、−本発明は、前記の従来技術の欠点を解消
し、膜がセットしである液深に関係なく、一定の膜透過
流速が得られ、しかも、運転コストが低い液体の膜分離
装置を提供することを課題とする。Therefore, the present invention overcomes the drawbacks of the prior art and provides a liquid membrane separation device that provides a constant membrane permeation flow rate regardless of the liquid depth at which the membrane is set, and that has low operating costs. The challenge is to provide.
本発明は、液面に対して垂直に設置された回転軸の一端
に透過水集水ラインを設け、その集水ライン中に吸引装
置を設け、集水ラインの透過水排出先端を被処理液面に
より下部に位置させることによりサイホンを形成させる
ことによって上記の課題を解決したものである。The present invention provides a permeated water collection line at one end of a rotating shaft installed perpendicular to the liquid surface, a suction device in the water collection line, and connects the permeated water discharge end of the water collection line to the liquid to be treated. The above problem is solved by forming a siphon by locating the siphon at the lower part of the surface.
すなわち、本発明による液体の膜分離装置は、中空の回
転軸の軸方向に、この回転軸と一体に回転する円板膜を
所定の間隔をおいて複数枚並列させた膜分離手段を液槽
内に配設し、前記円板膜の膜透過水を前記回転軸の中空
部に集水して装置外へ排出させる液体の膜分離装置にお
いて、前記回転軸を被処理液面に対して垂直方向に設置
し、液面上部の前記回転軸の一端に透過水集水ラインを
設け、透過水集水ライン中には吸引装置を設け、前記透
過水集水ラインの先端を被処理液面より下部に位置させ
たことを特徴とする。That is, the liquid membrane separation device according to the present invention includes a membrane separation means in which a plurality of disc membranes that rotate together with the hollow rotating shaft are arranged in parallel at predetermined intervals in the axial direction of the hollow rotating shaft. In a liquid membrane separation device, the membrane-permeated water of the disc membrane is collected in a hollow part of the rotating shaft and discharged to the outside of the device, and the rotating shaft is perpendicular to the surface of the liquid to be treated. A permeated water collection line is provided at one end of the rotating shaft above the liquid level, a suction device is provided in the permeated water collection line, and the tip of the permeated water collection line is placed above the liquid surface to be treated. It is characterized by being located at the bottom.
この装置においては、膜分離を開始した当初には、透過
水集水ラインに設けた吸引装置で透過水を吸引し、サイ
ホンを形成させる。これにより、吸引を停止しても透過
水“集水ラインのサイホンによって透過水を連続的に排
出させることができる。In this apparatus, at the beginning of membrane separation, the permeated water is sucked by a suction device installed in the permeated water collection line to form a siphon. As a result, even if suction is stopped, the permeated water can be continuously discharged by the siphon in the permeated water collection line.
そのため、透過水集水ラインの先端は、できるだけ低い
位置に設定するのが好ましい、また、サイホンが形成さ
れた後にも、吸引を続けることによって、常に一定量の
透過水を排出することができる。Therefore, it is preferable to set the tip of the permeated water collection line as low as possible, and even after the siphon is formed, by continuing suction, a constant amount of permeated water can be discharged at all times.
本発明の膜分離装置に使用しうる吸引装置としては、吸
引ポンプ、エジェクタなどが挙げられるが、特に制限は
ない。Examples of the suction device that can be used in the membrane separation apparatus of the present invention include a suction pump and an ejector, but there are no particular limitations.
次に、図面に示した実施例に基づいて本発明を詳述する
。Next, the present invention will be explained in detail based on embodiments shown in the drawings.
第１図は本発明の一実施例を示す膜分離装置の系統図で
ある。第１図において、液槽ｌには、被処理液２が管路
３から連続的又は間欠的に供給され、処理を受けた濃縮
液は、管路４から装置外へ連続的又は間欠的に排出され
る。液槽１内には、膜分離手段５が２セツト並設されて
いる。この膜分離手段５は、中空の回転軸６の軸方向に
複数枚の円板膜７を所定の間隔で並列して取り付けたも
のであり、モータ８によって回転軸６と円板膜７とを一
体に回転させるものである。第１図において、符号９は
、回転軸６の軸受、符号ｌＯは回転継手である。FIG. 1 is a system diagram of a membrane separation apparatus showing one embodiment of the present invention. In FIG. 1, the liquid to be treated 2 is continuously or intermittently supplied to the liquid tank l from a pipe 3, and the treated concentrated liquid is continuously or intermittently supplied to the outside of the apparatus from a pipe 4. It is discharged. In the liquid tank 1, two sets of membrane separation means 5 are arranged in parallel. This membrane separation means 5 has a plurality of disk membranes 7 attached in parallel at predetermined intervals in the axial direction of a hollow rotating shaft 6, and the rotating shaft 6 and the disk membranes 7 are separated by a motor 8. It rotates as one unit. In FIG. 1, reference numeral 9 is a bearing of the rotating shaft 6, and reference numeral 10 is a rotary joint.
透過水集水ライン１１は、回転継手１０を経て装置外へ
透過水を装置外へ排出する。この透過水集水ライン１１
の排出口１２は、被処理液２の液面より下部に設置する
。この設置位置は、できるだけ低い位置であるのが好ま
しい。The permeated water collection line 11 discharges permeated water to the outside of the apparatus via the rotary joint 10. This permeated water collection line 11
The discharge port 12 is installed below the liquid level of the liquid to be treated 2. This installation position is preferably as low as possible.
前記透過水集水ライン１１の途中には、吸引ポンプ１３
を設けるが、その位置は、被処理液２の液面より下方で
、透過水集水ライン１１の排出口１２の上方であるのが
好ましい。A suction pump 13 is installed in the middle of the permeated water collection line 11.
is provided, but its position is preferably below the liquid level of the liquid to be treated 2 and above the outlet 12 of the permeated water collection line 11.
上記の構成において、液槽１内の被処理液２は、常時、
回転する円板膜７と接触することになり、被処理液２の
水頭と透過水集水ライン１１の排出口１２との圧力を膜
分離の駆動力として液分離が行われる。膜を透過した透
過水は、前記のように円板膜７を経由して中空の回転軸
６を経て透過水集水ライン１１を経て排出される。In the above configuration, the liquid to be treated 2 in the liquid tank 1 is always
It comes into contact with the rotating disk membrane 7, and liquid separation is performed using the pressure between the water head of the liquid to be treated 2 and the discharge port 12 of the permeated water collection line 11 as a driving force for membrane separation. The permeated water that has passed through the membrane is discharged via the disk membrane 7, the hollow rotating shaft 6, and the permeated water collection line 11, as described above.
第１図に示した実施例では、円板膜７は隣接する膜分離
手段との相互関係でその一部が交互に位置するように構
成されているが、単一の膜分離手段を設置した構成にし
てもよい。In the embodiment shown in FIG. 1, the disc membranes 7 are constructed so that parts of them are located alternately in relation to adjacent membrane separation means, but it is possible to install a single membrane separation means. It may be configured.
口過開始当初は、バルブ１４を閉じ、バルブ１５を開け
、吸引ポンプ１３を用いて透過水を吸引し、トラップ１
６に透過水が注入されたことを確認した後、バルブ１５
を閉じ、バルブ１４を開ける。これによってサイホンが
形成され、排出口１２より透過水が連続的に排出される
。At the beginning of the permeation, the valve 14 is closed, the valve 15 is opened, the permeated water is sucked using the suction pump 13, and the trap 1 is
After confirming that permeate water has been injected into valve 15,
, and open valve 14. This forms a siphon, and the permeated water is continuously discharged from the discharge port 12.
このとき、膜分離手段５の各円板膜７に作用する圧力は
、被処理液２の液面と排出口１２の水頭が、その圧力に
相当し、各円板膜７には等しい圧力がかかるため、膜の
液深に関係なく一定の透過流速が得られ、膜の汚れも一
様となり、膜面積を有効に使用することができる。しか
も、運転コストは、口過開始当初の減圧ポンプを短時間
使用するだけで、通常は、膜駆動用のモータ８の運転コ
ストだけですみ、非常に低動力での運転が可能となった
。At this time, the pressure acting on each disc membrane 7 of the membrane separation means 5 corresponds to the liquid level of the liquid to be treated 2 and the water head of the discharge port 12, and the same pressure is applied to each disc membrane 7. Therefore, a constant permeation flow rate can be obtained regardless of the liquid depth of the membrane, the membrane is evenly contaminated, and the membrane area can be used effectively. Moreover, the operating cost is only the short-term use of the decompression pump at the beginning of the filtration process, and usually only the operating cost of the membrane drive motor 8, making it possible to operate at very low power.
第２図は、本発明の他の実施例を示す膜分離装置の系統
図であり、第１図に示した実施例と異なるのは、バルブ
１４及び■５の代わりに、電動弁１７及び１８を設け、
トラップ１６に代えて、Ｕ字管１９とレベルセンサー２
０及びＵ字管下部に電動弁２１を設け、レベルセンサー
２０の信号により、それぞれの電動弁及びポンプ２２を
コントロールボックス２３を通じて連動させたことであ
る。この装置は、口過操作をコントロールボックス２３
によって自動化したもので、口過当初には電動弁１８を
開け、電動弁１７を閉じて、ポンプ２２で吸引を行い、
透過水が流出しはじめたことをレベルセンサー２０で感
知し、その信号をコントロールボックス２３に送り、電
動弁１８を閉じてポンプ２２を止め、電動弁１７を開け
る信号を発する。これにより透過水はサイホンの作用に
より排出される。FIG. 2 is a system diagram of a membrane separation apparatus showing another embodiment of the present invention. What differs from the embodiment shown in FIG. established,
Instead of trap 16, U-shaped tube 19 and level sensor 2
Electric valves 21 are provided at the bottom of the 0 and U-shaped tubes, and the respective electric valves and pumps 22 are linked via a control box 23 based on the signal from the level sensor 20. This device uses a control box 23 to control the oral operation.
At the beginning of mouth passage, the electric valve 18 is opened, the electric valve 17 is closed, and the pump 22 performs suction.
The level sensor 20 detects that the permeated water has begun to flow out, sends the signal to the control box 23, closes the electric valve 18, stops the pump 22, and issues a signal to open the electric valve 17. As a result, the permeated water is discharged by the action of a siphon.
第３図は、本発明の他の実施例を示す膜分離装置の系統
図である。この実施例は、膜分離手段を最小単位ごとに
仕切り、パルプ操作により一台の吸引ポンプで各単位ご
との切り換えができるようにしたもので、洗浄操作を一
部の最小単位ごとに容易に行うことができるので、連続
処理が可能となる。FIG. 3 is a system diagram of a membrane separation apparatus showing another embodiment of the present invention. In this embodiment, the membrane separation means is partitioned into the smallest units, and each unit can be switched using a single suction pump using pulp operation, making it easy to perform cleaning operations for some of the smallest units. This allows continuous processing.
第４図は、本発明の他の実施例を示すもので、透過水集
水ライン１１にエジェクタ２４を設け、処理水引き抜き
ポンプ２５で処理水を引き抜き、一部をエジェクタに利
用し、一部を排出するように構成したものである。この
実施例によれば、処理水引き抜きポンプで常に一定量の
処理水を引き抜くことができ、しかもサイホンが切れる
ことがない。FIG. 4 shows another embodiment of the present invention, in which an ejector 24 is provided in the permeated water collection line 11, the treated water is drawn out by a treated water withdrawal pump 25, a part of which is used for the ejector, and a part of which is used for the ejector. It is configured to discharge. According to this embodiment, a fixed amount of treated water can always be withdrawn by the treated water withdrawal pump, and the siphon will not break.
本発明の膜分離装置は、膜がセットしである液深に関係
なく、一定の膜透過流速が得られ、しかも、透過水の排
出がサイホンによって行われるので、運転コストが低く
てすむ。The membrane separation device of the present invention provides a constant membrane permeation flow rate regardless of the liquid depth at which the membrane is set, and furthermore, the permeated water is discharged by a siphon, so operating costs are low.
第１図は本発明の一実施例を示す膜分離装置の系統図、
第２図〜第４図はそれぞれ本発明の他の実施例を示す膜
分離装置の系統図である。
符号の説明
１・・・液槽、５・・・膜分離手段、６・・・回転軸、
７・・・円板膜、９・・・軸受、１１・・・透過水集水
ライン、１２・・・排出口、１３゜２２・・・吸引ポン
プ、１６・・・トラップ、１７．１８．２１・・・電動
弁、１９・・・Ｕ字管、２０・・・レベルセンサー、２
３・・・コントロールボックス、２４・・・エジェクタ
、２５・・・処理水引き抜きポンプ
第１
コ ９ ｒ
第３図FIG. 1 is a system diagram of a membrane separation device showing one embodiment of the present invention;
FIGS. 2 to 4 are system diagrams of membrane separation apparatuses showing other embodiments of the present invention. Explanation of symbols 1...Liquid tank, 5...Membrane separation means, 6...Rotating shaft,
7... Disc membrane, 9... Bearing, 11... Permeated water collection line, 12... Outlet, 13° 22... Suction pump, 16... Trap, 17.18. 21... Electric valve, 19... U-shaped pipe, 20... Level sensor, 2
3... Control box, 24... Ejector, 25... Treated water withdrawal pump No. 1 9 r Figure 3
Claims (3)
転する円板膜を所定の間隔をおいて複数枚並列させた膜
分離手段を液槽内に配設し、前記円板膜の膜透過水を前
記回転軸の中空部に集水して装置外へ排出させる液体の
膜分離装置において、前記回転軸を被処理液面に対して
垂直方向に設置し、液面上部の前記回転軸の一端に透過
水集水ラインを設け、透過水集水ライン中には吸引装置
を設け、前記透過水集水ラインの先端を被処理液面より
下部に位置させたことを特徴とする液体の膜分離装置。(1) A membrane separation means in which a plurality of disk membranes that rotate together with the hollow rotating shaft are arranged in parallel at a predetermined interval in the axial direction of the hollow rotating shaft is disposed in the liquid tank, and the disk membrane In a liquid membrane separation device in which water that permeates through the membrane is collected in a hollow part of the rotating shaft and discharged to the outside of the device, the rotating shaft is installed perpendicularly to the surface of the liquid to be treated, and the water above the liquid surface is A permeated water collection line is provided at one end of the rotating shaft, a suction device is provided in the permeated water collection line, and the tip of the permeated water collection line is located below the surface of the liquid to be treated. Membrane separation equipment for liquids.
装置とバルブを介して結合した請求項１記載の液体の膜
分離装置。(2) The liquid membrane separation device according to claim 1, wherein the membrane separation means is partitioned into minimum units and connected to one suction device via a valve.
２記載の液体の膜分離装置。(3) The liquid membrane separation device according to claim 1 or 2, wherein the suction device is connected to an automatic control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63256679A JPH0616820B2 (en) | 1988-10-12 | 1988-10-12 | Liquid membrane separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63256679A JPH0616820B2 (en) | 1988-10-12 | 1988-10-12 | Liquid membrane separator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02102717A true JPH02102717A (en) | 1990-04-16 |
| JPH0616820B2 JPH0616820B2 (en) | 1994-03-09 |
Family
ID=17295964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63256679A Expired - Lifetime JPH0616820B2 (en) | 1988-10-12 | 1988-10-12 | Liquid membrane separator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0616820B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100443499B1 (en) * | 2001-02-16 | 2004-08-09 | 히다찌 플랜트 겐세쓰 가부시키가이샤 | Separation device for rotatable membrane |
| US7029584B2 (en) * | 2000-07-13 | 2006-04-18 | Aaflowsystems Gmbh & Co. Kg | Rotating filter |
| US7163622B2 (en) * | 2000-07-13 | 2007-01-16 | Andritz Ag | Filter |
| JP2018042555A (en) * | 2016-09-12 | 2018-03-22 | 株式会社明治 | Method for producing curdled food |
-
1988
- 1988-10-12 JP JP63256679A patent/JPH0616820B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7029584B2 (en) * | 2000-07-13 | 2006-04-18 | Aaflowsystems Gmbh & Co. Kg | Rotating filter |
| US7163622B2 (en) * | 2000-07-13 | 2007-01-16 | Andritz Ag | Filter |
| KR100443499B1 (en) * | 2001-02-16 | 2004-08-09 | 히다찌 플랜트 겐세쓰 가부시키가이샤 | Separation device for rotatable membrane |
| JP2018042555A (en) * | 2016-09-12 | 2018-03-22 | 株式会社明治 | Method for producing curdled food |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0616820B2 (en) | 1994-03-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |