JPH0889766A - Membrane separating device - Google Patents

Membrane separating device

Info

Publication number
JPH0889766A
JPH0889766A JP6257418A JP25741894A JPH0889766A JP H0889766 A JPH0889766 A JP H0889766A JP 6257418 A JP6257418 A JP 6257418A JP 25741894 A JP25741894 A JP 25741894A JP H0889766 A JPH0889766 A JP H0889766A
Authority
JP
Japan
Prior art keywords
membrane
stock solution
reinforcing frame
membrane unit
filtrate
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
Application number
JP6257418A
Other languages
Japanese (ja)
Inventor
Hajime Hisada
肇 久田
Masashi Beppu
雅志 別府
Yuji Nishida
祐二 西田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nitto Denko Corp
Original Assignee
Nitto Denko Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nitto Denko Corp filed Critical Nitto Denko Corp
Priority to JP6257418A priority Critical patent/JPH0889766A/en
Publication of JPH0889766A publication Critical patent/JPH0889766A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D63/00Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/08Flat membrane modules
    • B01D63/082Flat membrane modules comprising a stack of flat membranes
    • B01D63/0822Plate-and-frame devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D63/00Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/08Flat membrane modules
    • B01D63/082Flat membrane modules comprising a stack of flat membranes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D61/00Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14Ultrafiltration; Microfiltration
    • B01D61/18Apparatus therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2313/00Details relating to membrane modules or apparatus
    • B01D2313/02Specific tightening or locking mechanisms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2313/00Details relating to membrane modules or apparatus
    • B01D2313/06External membrane module supporting or fixing means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2315/00Details relating to the membrane module operation
    • B01D2315/06Submerged-type; Immersion type

Abstract

PURPOSE: To provide a membrane separating device in which a membrane unit can be mechanically safely held and moreover, the membrane units can be arranged in small size and easily integrated. CONSTITUTION: A reinforcing frame 1 having a projecting part 14 for fitting on one side and a recessed part 13 for fitting on the other side is attached to each membrane unit 2. The membrane units with the reinforcing frames are stacked to engage the recessed part and projecting part 13, 14 of the reinforcing frames 1 to each other.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は懸濁液の浄化処理に使用
する膜分離装置に関し、特に生活排水や工場排水の浄化
処理に有用なものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a membrane separator used for purification treatment of suspensions, and is particularly useful for purification treatment of domestic wastewater and factory wastewater.

【0002】[0002]

【従来の技術】高濃度懸濁液を膜分離法により浄化処理
する場合、濾過液流路用シ−トの両側に半透膜を有する
膜ユニットの複数枚を原液槽内に並設し、この膜ユニッ
ト群の下方に散気管を設けた膜分離装置の原液槽内に懸
濁液を供給し、散気管から気体噴出により、または循環
ポンプにより槽内原液を旋回させつつ、膜ユニットの濾
過液流路側を減圧して懸濁液を濾過することが公知であ
る(特公平4−70958号公報または実公平5−13
389号公報)。
When purifying a high-concentration suspension by a membrane separation method, a plurality of membrane units having semipermeable membranes on both sides of a filtrate channel sheet are arranged in parallel in a stock solution tank, The suspension is supplied into the stock solution tank of the membrane separation device in which a diffusing tube is installed below the membrane unit group, and the stock solution is filtered by jetting gas from the diffusing tube or by swirling the stock solution in the tank with a circulation pump. It is known to reduce the pressure on the liquid flow path side to filter the suspension (Japanese Patent Publication No. 4-70958 or Japanese Utility Model Publication 5-13).
389).

【0003】[0003]

【発明が解決しようとする課題】しかしながら、この従
来の膜分離装置においては、膜ユニットを所定の間隔
(5mm〜15mm程度)で並設してフレ−ムに組込
み、各膜ユニットの左右両端を固定しており(膜ユニッ
トの左右両端に濾過液集水管部を取付け、この濾過液集
水管部をフレ−ムに固定する等)、膜面への原液流動圧
(p)の作用下、膜ユニットに左右両端を支点として引
張り応力が作用し、膜面積(s)に較べ支持長さ(L)
が短いために、その引張り応力が大であり、(引張り応
力は、ps/Lに比例し、Lが小になるほど、大になる)
機械的に不利である。
However, in this conventional membrane separation device, the membrane units are arranged side by side at a predetermined interval (about 5 mm to 15 mm) and assembled in the frame, and the left and right ends of each membrane unit are attached. It is fixed (for example, the filtrate collecting pipes are attached to the left and right ends of the membrane unit and the filtrate collecting pipes are fixed to the frame), and the membrane flows under the action of the stock solution flowing pressure (p). Tensile stress acts on the unit with the left and right ends as fulcrums, and the supporting length (L) is greater than the membrane area (s).
The tensile stress is large due to the short length, and the tensile stress is proportional to ps / L, and the smaller L is, the larger the tensile stress is.
It is mechanically disadvantageous.

【0004】また、膜ユニットの保持にフレ−ムを使用
しており、フレ−ムの設置スペ−スによる装置の大型化
も避けられない。このフレ−ムの簡略化、若しくは省略
のもとでは、並設した膜ユニット相互のずれにより、膜
ユニット相互間の間隔を所定寸法に保持し難く、膜ユニ
ット間への充分量の原液の旋回が困難になる畏れがあ
る。
Further, since the frame is used for holding the membrane unit, it is inevitable that the apparatus is upsized due to the frame installation space. If the frame is simplified or omitted, it is difficult to maintain the space between the membrane units at a predetermined dimension due to the displacement between the membrane units arranged in parallel, and a sufficient amount of undiluted solution is swirled between the membrane units. There is a fear that it will be difficult.

【0005】本発明の目的は、濾過液流路用シ−トの両
側に半透膜を有する膜ユニットの複数箇を原液槽内に並
設し、槽内原液を旋回させつつ、上記並設膜ユニットの
濾過液流路側を減圧して原液を濾過する装置において、
膜ユニットを機械的に安全に保持でき、しかも、並設膜
ユニットを小型に、しかも容易に一体化し得る膜分離装
置を提供することにある。
An object of the present invention is to arrange a plurality of membrane units having semipermeable membranes on both sides of a sheet for a filtered liquid flow channel side by side in a stock solution tank, and to swirl the stock solution in the tank while arranging them in parallel. In the device for filtering the undiluted solution by depressurizing the filtrate flow path side of the membrane unit,
It is an object of the present invention to provide a membrane separation device capable of mechanically safely holding a membrane unit, and also capable of easily integrating a juxtaposed membrane unit in a small size.

【0006】[0006]

【課題を解決するための手段】本発明に係る膜分離装置
は、濾過液流路用シ−トの両側に半透膜を有する膜ユニ
ットの複数箇を原液槽内に並設し、槽内原液を旋回させ
つつ、上記並設膜ユニットの濾過液流路側を減圧して原
液を濾過する装置において、両側面の一方に嵌合用凸部
を、他方に嵌合用凹部を有する補強枠を上記の各膜ユニ
ットに装着し、この補強枠装着膜ユニットを重ね、補強
枠の上記嵌合用凹凸部間を嵌合したことを特徴とする構
成である。
Means for Solving the Problems In a membrane separation device according to the present invention, a plurality of membrane units having semipermeable membranes on both sides of a sheet for a filtrate flow channel are arranged side by side in a stock solution tank. In a device for filtering the stock solution by depressurizing the filtrate flow path side of the juxtaposed membrane unit while swirling the stock solution, a reinforcing frame having a fitting projection on one of both side surfaces and a fitting recess on the other side The reinforcing frame mounting membrane unit is mounted on each of the membrane units, the reinforcing frame mounting membrane units are stacked, and the fitting concave and convex portions of the reinforcing frame are fitted to each other.

【0007】[0007]

【作用】膜面に作用する原液流動圧(p)に対し、半透
膜は濾過液流路用シ−トとともに四方で補強枠に支持さ
れるから、膜面積をs、枠の周囲長さをLとすれば、膜
面に作用する引張り応力は、ほぼps/Lに比例し、従
来の膜ユニットの左右両端支持の場合に較べ、膜の支持
長さLが長く〔膜ユニットの縦長さをa、巾をbとする
と、L=2(a+b)であるのに対し、左右両端支持の
場合は、2aとなる〕、その引張り応力が小さくなる。
The semipermeable membrane is supported by the reinforcing frame in four directions together with the filtrate flow sheet against the stock solution flow pressure (p) acting on the membrane surface. Therefore, the membrane area is s, and the perimeter of the frame is Is L, the tensile stress acting on the membrane surface is almost proportional to ps / L, and the supporting length L of the membrane is longer than that in the case of supporting the left and right ends of the conventional membrane unit [the vertical length of the membrane unit. Is a and the width is b, L = 2 (a + b), whereas in the case of supporting both left and right ends, it is 2a], and the tensile stress becomes small.

【0008】また、膜ユニットに装着した補強枠に嵌合
用の凹凸部を設け、この凹凸の嵌合により膜ユニット群
を一体にしているので、膜ユニットを自ずから正規の位
置に位置決めでき、かつ、長期の流動原液中での使用に
対し、膜ユニットの位置ずれを確実に防止でき、膜ユニ
ット相互間の当所の間隔を保持できる。さらに、並設膜
ユニットの一体化のためのフレ−ムが不要であり、フレ
−ムの設置スペ−スの省略により、原液槽を小型にでき
る。
Further, since the concavo-convex portion for fitting is provided on the reinforcing frame mounted on the membrane unit and the membrane unit group is integrated by the concavo-convex fitting, the membrane unit can be naturally positioned at a proper position, and It is possible to surely prevent the displacement of the membrane units even when used in a liquid stock solution for a long period of time, and it is possible to maintain the space between the membrane units in place. Further, a frame for integrating the juxtaposed membrane units is not necessary, and the stock solution tank can be omitted to reduce the size of the stock solution tank.

【0009】[0009]

【実施例】以下、図面を参照しつつ本発明の構成を説明
する。図1は本発明において使用する補強枠の一例を示
している。図1において、1はプラスチック製または金
属製(例えば、アルミニウム製)の補強枠であり、合掌
式の二つ割れとされ、四方枠部11と左右二方の枠部に
連設された濾過液集水管部(外形は四角形)12とから
構成されている。13は濾過液集水管部12の両側面の
一方に設けられた嵌合用凹部、14は同じく他方に設け
られた嵌合用凸部である。
DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described below with reference to the drawings. FIG. 1 shows an example of a reinforcing frame used in the present invention. In FIG. 1, 1 is a reinforcing frame made of plastic or metal (for example, aluminum), which is a split-type two-split frame and is a filtrate that is connected to the four-sided frame part 11 and the left and right two-sided frame parts. The water collecting pipe portion (outer shape is a quadrangle) 12 is formed. Reference numeral 13 is a fitting concave portion provided on one of both side surfaces of the filtered water collecting pipe portion 12, and 14 is a fitting convex portion also provided on the other side.

【0010】図2の(イ)は、本発明において使用する
膜ユニット2の平面図を、図2の(ロ)は、図2の
(イ)におけるロ−ロ断面図を、図2の(ハ)は、図2
の(イ)におけるハ−ハ断面図をそれぞれ示している。
図2の(イ)乃至図2の(ハ)において、21は濾過液
流路用シ−トであり、例えば、プラスチックネット、プ
ラスチック不織布、織物(例えば、ポリエステル製トリ
コット織物、特に、この織物を樹脂液、例えばメラミン
樹脂液で内部に繊維間隙を残すように固めたもの等)、
多孔プラスチック板等が使用される。1は上記した補強
枠であり、濾過液流路用シ−ト21の周囲に挾着され、
その補強枠の合掌面は接着剤23’でシ−ルされてい
る。22は補強枠1の窓に接着剤23または融着により
貼着された半透膜(精密濾過膜や限外濾過膜等)であ
り、精密濾過膜や限外濾過膜を不織布等の基材に貼り合
わせたもの、精密濾過膜や限外濾過膜に不織布等の基材
を埋め込んだもの等も使用できる。24は補強枠1の濾
過液集水管部12の上端開口に接着剤を介して水密に差
し込まれた濾過液取出し短管、25は同じく濾過液集水
管部12の下端開口に接着剤を介して水密に差し込まれ
た密栓である。
2A is a plan view of the membrane unit 2 used in the present invention, FIG. 2B is a sectional view taken along the line of FIG. 2A, and FIG. C) is shown in Figure 2.
The cross-sectional views of (a) in FIG.
In FIGS. 2 (a) to 2 (c), 21 is a sheet for filtered liquid flow path, for example, a plastic net, a plastic non-woven fabric, a woven fabric (for example, a tricot woven fabric made of polyester, particularly this woven fabric). Resin liquid, such as melamine resin liquid that has been hardened to leave fiber gaps inside, etc.),
A porous plastic plate or the like is used. Reference numeral 1 denotes the above-mentioned reinforcing frame, which is attached around the sheet 21 for the filtrate flow path,
The palm surface of the reinforcing frame is sealed with an adhesive 23 '. Reference numeral 22 is a semipermeable membrane (such as a microfiltration membrane or an ultrafiltration membrane) adhered to the window of the reinforcing frame 1 by an adhesive 23 or fusion, and the microfiltration membrane or the ultrafiltration membrane is a base material such as a nonwoven fabric. It is also possible to use a material such as a non-woven fabric or the like, which is attached to the above, or a microfiltration membrane or an ultrafiltration membrane in which a base material such as a nonwoven fabric is embedded. 24 is a short pipe for taking out the filtrate, which is watertightly inserted into the upper end opening of the filtrate collecting pipe part 12 of the reinforcing frame 1 via an adhesive, and 25 is also a lower pipe opening of the filtrate collecting pipe part 12 via the adhesive. It is a watertight plug.

【0011】上記において、補強枠の合掌面のシ−ル、
補強枠への半透膜の接着、濾過液取出し短管や密栓の水
密固定に用いる接着剤には、例えば、エポキシ樹脂、ウ
レタン樹脂等の硬化型接着剤、ホットメルト接着剤等を
使用できる。
In the above, the seal on the abutment surface of the reinforcing frame,
As the adhesive used for adhering the semipermeable membrane to the reinforcing frame and watertightly fixing the short pipe for taking out the filtrate and the watertight stopper, for example, a curable adhesive such as an epoxy resin or a urethane resin, a hot melt adhesive or the like can be used.

【0012】図3は上記した補強枠付膜ユニット2の並
設構造体Aの要部を示し、一の補強枠付膜ユニット2の
濾過液集水管部12の片方側面の嵌合用凸部13に,次
の補強枠付膜ユニット2の濾過液集水管部12の他方側
面の嵌合用凹部14を嵌合して補強枠付膜ユニット群を
一体化し、補強枠1の濾過液集水管部12の突出代eを
スペ−サとして膜ユニット2,2相互間に所定の間隔を
保持させてある。
FIG. 3 shows a main part of the juxtaposed structure A of the membrane unit 2 with the reinforcing frame, and the fitting convex portion 13 on one side of the filtrate collecting pipe 12 of the membrane unit 2 with one reinforcing frame. Then, a fitting concave portion 14 on the other side surface of the filtrate liquid collecting pipe portion 12 of the membrane unit 2 with a reinforcing frame is fitted to integrate the membrane unit group with the reinforcing frame, and the filtrate liquid collecting pipe portion 12 of the reinforcing frame 1 is integrated. The protrusion margin e is used as a spacer to keep a predetermined space between the membrane units 2 and 2.

【0013】上記において、補強枠1には、図4に示す
ように、四方枠部の左右一方の枠部にのみ濾過液集水管
部12を有するものも使用でき、この場合、膜ユニット
の並設一体化においては、濾過液集水管部12,12間
の凸部13と凹部14との嵌合と共に左右他方の枠部の
上下にスペ−サ121を介在させ、これらのスペ−サ1
21の各側面と各膜ユニットの枠部との凹凸部を嵌合す
ることができる。
In the above, as the reinforcing frame 1, as shown in FIG. 4, it is also possible to use one having the filtrate collecting tube part 12 only on one of the left and right frame parts of the four-sided frame part. In the installation, the protrusions 13 and the recesses 14 between the filtered water collecting pipe portions 12 and 12 are fitted together, and the spacers 121 are interposed above and below the other left and right frame portions.
The concavo-convex portion between each side surface of 21 and the frame portion of each membrane unit can be fitted.

【0014】本発明においては、図5に示すように、補
強枠における濾過液集水管部12以外の数箇所の片面側
に、凹部14を有する雌継手140を、同数箇所の他面
側に凸部13を有する雄継手130をそれぞれ設け、凹
部14と凸部13との嵌合により膜ユニット群1,…を
一体化することもできる。上記において、凹部14と凸
部13との嵌合構造には、図6の(イ)、または図6の
(ロ)に示すような、所謂、ありつぎとすることが好ま
しい。
In the present invention, as shown in FIG. 5, female joints 140 having recesses 14 are provided on one side of the reinforcing frame at several points other than the filtrate collecting tube section 12, and convex portions are projected at the same number of other sides. It is also possible to provide the male joints 130 each having the portion 13 and to integrate the membrane unit groups 1, ... By fitting the concave portions 14 and the convex portions 13. In the above, the fitting structure of the concave portion 14 and the convex portion 13 is preferably a so-called dovetail, as shown in (a) of FIG. 6 or (b) of FIG.

【0015】本発明において、膜ユニット2には、図7
に示すように、濾過液流路用シ−ト21を半透膜22,
22で挾み、これらの周囲に補強枠1を装着し、枠1と
半透膜22との間を接着剤23でシ−ルしたものを使用
することもできる。
In the present invention, the membrane unit 2 has a structure shown in FIG.
As shown in FIG.
It is also possible to use a product which is sandwiched by 22 and which is provided with the reinforcing frame 1 around them and sealed between the frame 1 and the semipermeable membrane 22 with the adhesive 23.

【0016】図8は本発明に係る膜分離装置の一例を示
している。図8において、51は原液槽であり、載蓋で
蓋閉することができ(図示されていない)、この場合で
も、内部は大気圧に保持される。この原液槽51には、
従来の活性汚泥方式による散気式曝気槽の曝気槽本体を
使用することができる。Aは補強枠付膜ユニット2,…
の並設構造体であり、原液槽51の底部に格子架台52
により固定してある。
FIG. 8 shows an example of the membrane separation device according to the present invention. In FIG. 8, reference numeral 51 denotes a stock solution tank, which can be closed with a mounting lid (not shown), and in this case as well, the inside is kept at atmospheric pressure. In this stock solution tank 51,
The aeration tank main body of the conventional aeration type aeration tank by the activated sludge system can be used. A is a membrane unit with a reinforcing frame 2, ...
And a lattice mount 52 at the bottom of the stock solution tank 51.
Fixed by.

【0017】53,…は膜ユニットの並設構造体Aの下
方に設けた散気管、54は送気配管、55はブロワであ
る。56は膜ユニットの並設構造体Aの濾過液集水管1
2,…に接続した濾過液取出し配管、57はこの配管5
6に挿入した吸引ポンプ、58は濾過液貯槽である。5
9は懸濁液供給配管、60はこの配管59に挿入した液
送ポンプである。
Numerals 53, ... Are diffuser pipes provided below the juxtaposed structure A of the membrane units, 54 is an air supply pipe, and 55 is a blower. Reference numeral 56 is the filtrate collecting pipe 1 of the juxtaposed structure A of membrane units
2, a pipe for taking out the filtrate, which is connected to 2, ...
6 is a suction pump, and 58 is a filtrate storage tank. 5
9 is a suspension supply pipe, and 60 is a liquid feed pump inserted in this pipe 59.

【0018】本発明に係る膜分離装置を使用して懸濁
液、例えば、生活排水、工場排水等の汚水を処理するに
は、この排水を貯槽に一旦貯えたうえ、図8において、
この汚水を液送ポンプ60により原液槽51に供給し、
ブロワ55の駆動により散気管53,…から空気を噴出
させてエア−スクラビングを行いつつ、吸引ポンプ57
の駆動により膜ユニット2の濾過液流路側を減圧して所
定の膜間差圧を作用させ、汚水中の有機物を空気との接
触下、好気性微生物により吸着・代謝分解させ、病原菌
を減少させると共に好気性微生物を増殖させつつ、膜ユ
ニット2の膜に水を透過させ、これを濾過液取出し配管
56を経て濾過液貯槽58に取出していく。
In order to use the membrane separation apparatus according to the present invention to treat suspensions, such as domestic wastewater and factory wastewater, the wastewater is temporarily stored in a storage tank and then, as shown in FIG.
This waste water is supplied to the stock solution tank 51 by the liquid feed pump 60,
The blower 55 is driven to eject air from the air diffusers 53, ..., While performing air-scrubbing, a suction pump 57.
Driven to reduce the pressure on the filtrate flow path side of the membrane unit 2 to exert a predetermined transmembrane pressure difference, and organic substances in wastewater are adsorbed and metabolized by aerobic microorganisms in contact with air to reduce pathogenic bacteria. At the same time, water is permeated through the membrane of the membrane unit 2 while growing aerobic microorganisms, and this is taken out to the filtrate storage tank 58 via the filtrate extraction pipe 56.

【0019】この場合、エア−スクラビングによる旋回
速度(平均流速)は、懸濁液の液質や濃度や処理速度等
によっても異なるが、通常0.4〜2.0m/sec、
好ましくは、0.5〜1.0m/secの範囲内とする
ように、ブロワ55の送風量が調整される。0.4m/
sec以下では、活性汚泥が沈殿して微生物反応を促進
させ難く、また、膜面の洗浄効果も不充分となる。2.
0m/sec以上では、上記モジュ−ルの強度上、安全
保障が難しくなり、空気供給コストも高くなり過ぎる。
In this case, the swirling speed (average flow speed) by air-scrubbing is usually 0.4 to 2.0 m / sec, though it varies depending on the quality and concentration of the suspension, the processing speed, and the like.
Preferably, the air flow rate of the blower 55 is adjusted so as to fall within the range of 0.5 to 1.0 m / sec. 0.4m /
If it is less than sec, activated sludge is less likely to be precipitated and promote a microbial reaction, and the cleaning effect on the membrane surface is insufficient. 2.
If it is 0 m / sec or more, security is difficult due to the strength of the module, and the air supply cost is too high.

【0020】上記膜ユニットの相互間隔は、原液の水質
等によっても異なるが、通常、5〜15mm程度とされ
る。5mm以下では、エア−スクラビングによる膜ユニ
ット間での原液上昇流に対する抵抗が高くなり過ぎ、そ
の流速を高速になし得ずに膜面洗浄効果が低下し、15
mm以上では、原液槽容積に対する膜面積が小となり過
ぎ、膜分離装置の大型化が招来される。
The mutual distance between the membrane units varies depending on the water quality of the stock solution and the like, but is usually about 5 to 15 mm. If the thickness is 5 mm or less, the resistance to the ascending flow of the stock solution between the membrane units due to air-scrubbing becomes too high, the flow rate cannot be made high, and the cleaning effect on the membrane surface decreases.
If it is greater than or equal to mm, the membrane area becomes too small with respect to the volume of the stock solution, leading to an increase in the size of the membrane separation device.

【0021】上記実施例においては、散気管53,…か
らの噴出気体により原液を旋回させているが、原液槽に
バイパス管を介してポンプを連結し、このポンプの駆動
により原液を循環させて槽内原液を旋回させることもで
きる。
In the above embodiment, the stock solution is swirled by the gas ejected from the air diffusing pipes 53, ... However, a pump is connected to the stock solution tank via a bypass pipe, and the stock solution is circulated by driving the pump. It is also possible to swirl the stock solution in the tank.

【0022】本発明に係る膜分離装置の運転において、
膜ユニットの濾過液流路側の吸引ポンプ57による減圧
は、間歇的に行うことが好ましく(例えば、15分間吸
引ポンプ駆動,5分間吸引ポンプ停止の繰返し)、かく
することにより、吸引ポンプ停止期間中、膜間差圧を零
にし、ゲル層の膜面へのゲル層の押え付けを排除してエ
ア−スクラビングによるゲル層の除去を効率よく行い
得、全体としての経時的なゲル層の付着生成を抑制する
ことができる。
In the operation of the membrane separation device according to the present invention,
The pressure reduction by the suction pump 57 on the filtrate flow path side of the membrane unit is preferably performed intermittently (for example, 15 minutes of suction pump drive and 5 minutes of suction pump stop are repeated), and thus, during the suction pump stop period. , The pressure difference between the membranes is made zero, and the gel layer is not pressed against the membrane surface of the gel layer, so that the gel layer can be efficiently removed by air-scrubbing, and the gel layer adheres and forms as a whole over time. Can be suppressed.

【0023】この場合、膜面での経時的なゲル層の生成
にもかかわらず、濾過流束を一定とするように、ゲル層
生成に基づく濾過抵抗の増大に応じ、漸次に減圧度(上
記間歇的減圧運転の減圧時の減圧度)を高くして膜間差
圧を増大し、所定の減圧度(例えば、−230mmHg
程度)に達すれば、運転を中断し、適当な手段で濾過流
束をほぼ回復させたうえで、前記の一定濾過流束下での
再運転を行うことができる(定量運転)。あるいは、一
定の減圧度で間歇的に減圧し、透過流束が下限値に低下
すると運転を中断し、適当な手段で濾過流束をほぼ回復
させたうえで、前記の一定減圧度下での再運転を行うこ
ともできる(定圧運転)。
In this case, in spite of the formation of the gel layer on the membrane surface over time, the degree of pressure reduction is gradually increased according to the increase in the filtration resistance due to the formation of the gel layer so that the filtration flux becomes constant. By increasing the degree of pressure reduction during intermittent pressure reduction operation to increase the transmembrane pressure difference, a predetermined degree of pressure reduction (for example, -230 mmHg
When it reaches a certain level, the operation can be stopped, the filtration flux can be almost recovered by an appropriate means, and then the re-operation under the constant filtration flux can be performed (quantitative operation). Alternatively, the pressure is intermittently reduced at a constant decompression degree, and when the permeation flux falls to the lower limit value, the operation is stopped, the filtration flux is almost recovered by an appropriate means, and then the above-mentioned constant decompression degree is maintained. It can also be restarted (constant pressure operation).

【0024】[0024]

【発明の効果】本発明は、濾過液流路用シ−トの両側に
半透膜を有する膜ユニットの複数箇を原液槽内に並設
し、槽内原液を旋回させつつ、上記並設膜ユニットの濾
過液流路側を減圧して原液を濾過する装置において、膜
ユニットの四方に補強枠を装着したから、原液流動圧力
により膜に作用する引張り応力を、膜ユニットを左右の
二方で支持している従来例に較べ、小にでき、機械的に
安全である。
According to the present invention, a plurality of membrane units having semipermeable membranes on both sides of a sheet for a filtered liquid flow path are arranged side by side in a stock solution tank, and the stock solution in the tank is swirled while being arranged in parallel. In a device that depressurizes the filtrate flow path side of the membrane unit to filter the stock solution, since reinforcing frames are attached to the four sides of the membrane unit, the tensile stress acting on the membrane due to the stock solution flow pressure can be applied to the left and right sides of the membrane unit. It is smaller and mechanically safer than the conventional example that supports it.

【0025】また、並設膜ユニットを補強枠側面の凹凸
部の嵌合により一体としているから、長期の流動原液と
の接触にも係らず、各膜ユニットを当所の位置にずれな
く固定でき、更に、膜ユニット並設のためのフレ−ムを
必要としないので、設置スペ−スの縮小が期待できる。
Further, since the juxtaposed membrane units are integrated by fitting the concave and convex portions on the side surface of the reinforcing frame, each membrane unit can be fixed to the position of the place without slipping regardless of the long-term contact with the stock solution. Further, since a frame for arranging the membrane units in parallel is not required, the installation space can be expected to be reduced.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明において使用する補強枠の一例を示す説
明図である。
FIG. 1 is an explanatory view showing an example of a reinforcing frame used in the present invention.

【図2】図2の(イ)本発明において使用する補強枠付
膜ユニットの一例を示す平面図、図2の(ロ)は図2の
(イ)におけるロ−ロ断面図、図2の(ハ)は図2の
(イ)におけるハ−ハ断面図である。
2 (a) is a plan view showing an example of a reinforcing frame-attached membrane unit used in the present invention, FIG. 2 (b) is a cross-sectional view taken along the line of FIG. 2 (a), and FIG. FIG. 3C is a sectional view taken along the line of FIG. 2A.

【図3】本発明において使用する膜ユニットの並設構造
体の一例の要部を示す説明図である。
FIG. 3 is an explanatory diagram showing a main part of an example of a juxtaposed structure of membrane units used in the present invention.

【図4】本発明において使用する膜ユニットの並設構造
体の別例の要部を示す説明図である。
FIG. 4 is an explanatory diagram showing a main part of another example of a juxtaposed structure of membrane units used in the present invention.

【図5】本発明において使用する膜ユニットの並設構造
体の他の別例の要部を示す説明図である。
FIG. 5 is an explanatory diagram showing a main part of another example of the juxtaposed structure of membrane units used in the present invention.

【図6】本発明における凸部と凹部との嵌合形状の異な
る例を示す説明図である。
FIG. 6 is an explanatory view showing an example in which a convex portion and a concave portion have different fitting shapes according to the present invention.

【図7】本発明において使用する補強枠付膜ユニットの
上記とは別の例の要部をを示す説明図である。
FIG. 7 is an explanatory diagram showing a main part of another example of the membrane unit with a reinforcing frame used in the present invention, which is different from the above example.

【図8】本発明に係る膜分離装置の実施例を示す説明図
である。
FIG. 8 is an explanatory view showing an embodiment of the membrane separation device according to the present invention.

【符号の説明】[Explanation of symbols]

1 補強枠 11 枠部 12 濾過液集水管部 13 嵌合用凸部 14 嵌合用凹部 21 濾過液流路用シ−ト 22 半透膜 2 膜ユニット A 膜ユニットの並設構造体 51 原液槽 53 散気管 57 吸引ポンプ DESCRIPTION OF SYMBOLS 1 Reinforcement frame 11 Frame part 12 Filtrate liquid collecting pipe part 13 Fitting convex part 14 Fitting concave part 21 Filtrate liquid flow path sheet 22 Semipermeable membrane 2 Membrane unit A Membrane unit juxtaposed structure 51 Undiluted solution tank 53 Scattering Trachea 57 suction pump

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】濾過液流路用シ−トの両側に半透膜を有す
る膜ユニットの複数箇を原液槽内に並設し、槽内原液を
旋回させつつ、上記並設膜ユニットの濾過液流路側を減
圧して原液を濾過する装置において、両側面の一方に嵌
合用凸部を、他方に嵌合用凹部を有する補強枠を上記の
各膜ユニットに装着し、この補強枠装着膜ユニットを重
ね、補強枠の上記嵌合用凹凸部間を嵌合したことを特徴
とする膜分離装置。
1. A plurality of membrane units having semipermeable membranes on both sides of a sheet for a filtered liquid flow path are arranged in parallel in a stock solution tank, and while the stock solution in the tank is swirled, the filtration of the parallel membrane unit is carried out. In a device for filtering a stock solution by decompressing a liquid flow path side, a reinforcing frame having a fitting convex portion on one side surface and a fitting concave portion on the other side is attached to each of the above membrane units, and the reinforcement frame attaching membrane unit And the fitting concave and convex portions of the reinforcing frame are fitted to each other, and the membrane separating device is fitted.
JP6257418A 1994-09-26 1994-09-26 Membrane separating device Pending JPH0889766A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6257418A JPH0889766A (en) 1994-09-26 1994-09-26 Membrane separating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6257418A JPH0889766A (en) 1994-09-26 1994-09-26 Membrane separating device

Publications (1)

Publication Number Publication Date
JPH0889766A true JPH0889766A (en) 1996-04-09

Family

ID=17306099

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6257418A Pending JPH0889766A (en) 1994-09-26 1994-09-26 Membrane separating device

Country Status (1)

Country Link
JP (1) JPH0889766A (en)

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WO2007122839A1 (en) * 2006-03-27 2007-11-01 Toray Industries, Inc. Membrane element, membrane unit and multistage membrane unit
JP2008238167A (en) * 2007-03-26 2008-10-09 Millipore Corp Cassette type filtration apparatus
WO2010079558A1 (en) * 2009-01-06 2010-07-15 株式会社クボタ Spacing member, membrane element, and immersed membrane separation device
US20100258492A1 (en) * 2007-10-30 2010-10-14 Kolon Construction Co., Ltd Filtering membrane module and filtering apparatus having the same
US20110100912A1 (en) * 2009-11-03 2011-05-05 Sanghoon Lee Immersion type membrane separator device
WO2011055889A1 (en) * 2009-11-05 2011-05-12 엘지전자 주식회사 Membrane module and membrane module assembly, and immersion-type layer-separating apparatus including same
WO2011116467A1 (en) 2010-03-24 2011-09-29 Bionest Technologies Inc. Membrane filter system
KR101236550B1 (en) * 2009-12-24 2013-02-22 엘지전자 주식회사 Membrane Module And Immersion Type Membrane Separator Device Comprising Thereof
US8454822B2 (en) 2009-05-29 2013-06-04 Emd Millipore Corporation Disposable tangential flow filtration liner with sensor mount
US9114366B2 (en) 2006-04-14 2015-08-25 Emd Millipore Corporation Disposable tangential flow filtration device holder
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Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2007242360B2 (en) * 2006-03-27 2010-09-30 Toray Industries, Inc. Membrane element, membrane unit and multistage membrane unit
WO2007122839A1 (en) * 2006-03-27 2007-11-01 Toray Industries, Inc. Membrane element, membrane unit and multistage membrane unit
US9114366B2 (en) 2006-04-14 2015-08-25 Emd Millipore Corporation Disposable tangential flow filtration device holder
JP2008238167A (en) * 2007-03-26 2008-10-09 Millipore Corp Cassette type filtration apparatus
US9005441B2 (en) * 2007-10-30 2015-04-14 Kolon Global Corporation Filtering membrane module and filtering apparatus having the same
US9795904B2 (en) 2007-10-30 2017-10-24 Kolon Global Corporation Filtering membrane module and filtering apparatus having the same
US20100258492A1 (en) * 2007-10-30 2010-10-14 Kolon Construction Co., Ltd Filtering membrane module and filtering apparatus having the same
JP2010158599A (en) * 2009-01-06 2010-07-22 Kubota Corp Spacing member, membrane element, and immersion type membrane separation apparatus
WO2010079558A1 (en) * 2009-01-06 2010-07-15 株式会社クボタ Spacing member, membrane element, and immersed membrane separation device
US8366929B2 (en) 2009-01-06 2013-02-05 Kubota Corporation Spacing member, membrane element, and submerged membrane separation device
US9289703B2 (en) 2009-05-29 2016-03-22 Emd Millipore Corporation Disposable tangential flow filtration liner with sensor mount
US8454822B2 (en) 2009-05-29 2013-06-04 Emd Millipore Corporation Disposable tangential flow filtration liner with sensor mount
US20110100912A1 (en) * 2009-11-03 2011-05-05 Sanghoon Lee Immersion type membrane separator device
WO2011055889A1 (en) * 2009-11-05 2011-05-12 엘지전자 주식회사 Membrane module and membrane module assembly, and immersion-type layer-separating apparatus including same
KR101236550B1 (en) * 2009-12-24 2013-02-22 엘지전자 주식회사 Membrane Module And Immersion Type Membrane Separator Device Comprising Thereof
WO2011116467A1 (en) 2010-03-24 2011-09-29 Bionest Technologies Inc. Membrane filter system
EP2550085A4 (en) * 2010-03-24 2016-11-23 Bionest Technologies Inc Membrane filter system
CN108854538A (en) * 2018-06-12 2018-11-23 合肥丰洁生物科技有限公司 A kind of membrane separation plant being conveniently replaceable membrane module

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