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WO2005028087A1 - Filtration module comprising membrane filter elements - Google Patents

Filtration module comprising membrane filter elements Download PDF

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Publication number
WO2005028087A1
WO2005028087A1 PCT/EP2004/010099 EP2004010099W WO2005028087A1 WO 2005028087 A1 WO2005028087 A1 WO 2005028087A1 EP 2004010099 W EP2004010099 W EP 2004010099W WO 2005028087 A1 WO2005028087 A1 WO 2005028087A1
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WO
WIPO (PCT)
Prior art keywords
channel
medium
membrane
retentate
inlet
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Ceased
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PCT/EP2004/010099
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German (de)
French (fr)
Inventor
Hans-Peter Feuerpeil
Dieter Blaese
Hans Olapinski
Herbert Gansaeuer
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Individual
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/20—Accessories; Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/18—Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/02—Hollow fibre modules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
    • B01D65/08—Prevention of membrane fouling or of concentration polarisation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/18—Specific valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/48—Mechanisms for switching between regular separation operations and washing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
    • B01D2321/20—By influencing the flow
    • B01D2321/2033—By influencing the flow dynamically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
    • B01D2321/20—By influencing the flow
    • B01D2321/2083—By reversing the flow

Definitions

  • the invention relates to the field of filtration using membranes. It is about the so-called tangential flow filtration.
  • a volume flow of the medium to be filtered flows through a channel which has a wall surface in contact with the medium and which is formed from membrane material.
  • a partial stream, the so-called permeate, passes through the membrane.
  • the membrane filter elements can be constructed differently. So you know hollow fiber filter elements, in which the medium-leading channels
  • a filter module can consist of a plurality of bundled mono channels, and rod-shaped filter elements are known which have a plurality of longitudinal bores, and spiral winding modules are also known.
  • the medium to be filtered is pumped through the channels that carry unfiltrate.
  • the pump energy required means operating costs. These should be as small as possible.
  • the individual membrane module should also be designed and operated in such a way that it can be operated for as long a period as possible without being cleaned or replaced.
  • the formation of so-called cover layers on the membrane is a hindrance. Such cover layers are formed from the components of the medium to be filtered.
  • the inventors also tried to switch off the volume flow through the medium-carrying channel for a few minutes. This also had little or no success depending on the medium to be filtered.
  • the invention is based on the object of specifying a method and a device with which the filtration process can be carried out in a manner which is more optimal than in the prior art.
  • the energy consumption is to be reduced and the service life of filter modules is to be extended.
  • the inventors recognized as essential that the unfiltered volume flow is stopped for extremely short periods of time. This can be done by shutting off the medium-carrying channel.
  • “Extremely small time spans” is understood to mean a time span in the seconds range or in the millisecond range. Good results have been achieved at intervals, that is to say interruptions between two switchovers, ie crossflow / dead end of 60, 30, 10, 5, 4, 3, 2, 1. Intervals of less than one second, for example 500, 200, 50 milliseconds, have proven to be particularly advantageous.
  • the result of the intermittent shut-off consists in an extreme reduction in the energy requirement in the form of the pump work, and furthermore in an excellent impairment of the top layer formation, even in the case of very heavily contaminated media to be filtered, for example biomass.
  • the pressure in the system continues to be maintained during the extremely short period of flow interruption in the medium-carrying channel.
  • the permeation i.e. the permeate passing through the membrane, continues to take place.
  • Figure 1 shows a schematic representation of a filtration module with several multi-channel elements.
  • Figure 2 shows a module with hollow fibers or mono channels.
  • Figure 3 shows a spiral winding module
  • Figure 4 shows a perspective view of a multi-channel element.
  • Figure 5 is a top view of an end face of a module without a cover.
  • Figure 6 is a top view of an end face of a module with a cover.
  • Figure 7 is a top view of an end face of another module with cover.
  • Figure 8 shows a schematic representation of a system with a filter device.
  • the module shown in FIG. 1 has a plurality of multi-channel elements 2. These are arranged parallel to each other. They are installed in a housing 3 and sealed off from one another and from the housing by seals 4.
  • the housing has an inlet 3.1 for the medium to be filtered, a permeate outlet 3.2 and a retentate outlet 3.3.
  • the module shown in Figure 2 has hollow fibers with mono channels 2.1.
  • the module shown in FIG. 3 is a spiral winding module of a known type, which is also designed in accordance with the invention.
  • the multichannel element shown in FIG. 4 has 19 channels. This number could also be larger or smaller.
  • the object of Figure 5 shows the contour of the individual channels.
  • FIG. 6 shows the subject of FIG. 5, but supplemented by a shut-off element which half covers the cross-sectional areas of the upstream or downstream side of a module. It is stored in the central axis of the module.
  • a drive not shown here, is provided which can set the shut-off element in one revolution around the central axis. The direction of rotation can also be reversed if advantageous.
  • shut-off element itself can be attached to the module on the inflow or outflow side of the unfiltrate. It is advantageous to install the shut-off element between two cascaded
  • the pulsed cross-flow for both modules is realized with a shut-off element.
  • the shut-off device which is usually made up of circular segments, does not necessarily have to completely prevent the volume flow in the covered unfiltrate channels, a reduction to ⁇ 20% of the volume flow that occurs when the shut-off device is open
  • FIG. 6 shows a state in which some of the channels 2.1 are completely open, some are partially covered, others are completely covered.
  • the leading edge of the shut-off element should be a straight line that lies on a radius at all times. In this way, all channels are covered within a certain period of time during an equally long time interval.
  • Release periods can be in the millisecond range.
  • the type of drive does not matter.
  • an electromagnetic drive, a mechanical drive, or another drive can be used. It is also conceivable to make the shut-off element 8 itself driving by appropriate design.
  • Figure 7 differs from the object of Figure 6 only in a different design of the shut-off element. As you can see, two quadrant-shaped segments and two acute-angled segments are provided.
  • the system shown in Figure 8 is a semi-open system for continuous operation. As the most important component, it comprises one or more of the modules, which can be constructed as shown in FIG. 1. A container 6 for the medium to be filtered can also be seen. From this is a
  • Pump 7 a volume flow of the medium is withdrawn and fed to the module.
  • the supply can take place at one or the other end of the module.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

The invention relates to a method for operating a filtration module comprising membrane filter elements in the form of hollow fiber elements, mono-channel or multichannel elements, or coil elements. Said method encompasses the following steps: - a volume flow of a medium that is to be filtered is introduced into the input end of the channel conducting unfiltered matter, the wall surface of said channel, which enters in contact with the medium, being formed at least in part by a membrane; - permeate that penetrates the membrane is discharged via a permeate outlet; - unfiltered matter/retentate is discharged at the outlet end of the medium-conducting channel; - the inlet of the medium-conducting channel for unfiltered matter (retentate inlet) and/or the retentate outlet is/are intermittently blocked at least in part and reopened by means of a rotatably mounted and rotating element which partly covers the cross sections of the inlet or outlet of the membrane.

Description

Filtrationsmodul mit Membran-Filterelementen Filtration module with membrane filter elements

Die Erfindung betrifft das Gebiet der Filtration mittels Membranen. Dabei geht es um die sogenannte Tangentialflussfiltration. Hierbei strömt ein Volumenstrom des zu filternden Mediums durch einen Kanal, der eine medium-berührte Wandfläche aufweist, die aus Membran-Material gebildet ist. Durch die Membran tritt ein Teilstrom hindurch, das sogenannte Permeat.The invention relates to the field of filtration using membranes. It is about the so-called tangential flow filtration. In this case, a volume flow of the medium to be filtered flows through a channel which has a wall surface in contact with the medium and which is formed from membrane material. A partial stream, the so-called permeate, passes through the membrane.

Die Membran-Filterelemente können unterschiedlich aufgebaut sein. So kennt man Hohlfaser-Filterelemente, bei denen die medium-führenden KanäleThe membrane filter elements can be constructed differently. So you know hollow fiber filter elements, in which the medium-leading channels

Durchmesser im Bereich von einigen Zehntel-Millimetern aufweisen. Ferner kennt man Filterelemente mit Kanalweiten im Makro-Bereich, deren Durchmesser einige Millimeter oder einige Zentimeter betragen kann. Ein Filtermodul kann aus einer Mehrzahl von gebündelten Monokanälen bestehen, ferner sind stabförmige Filterlemente bekannt, die eine Mehrzahl von Längsbohrungen aufweisen, auch kennt man Spiralwickelmodule.Have diameters in the range of a few tenths of a millimeter. Also known are filter elements with channel widths in the macro range, the diameter of which can be a few millimeters or a few centimeters. A filter module can consist of a plurality of bundled mono channels, and rod-shaped filter elements are known which have a plurality of longitudinal bores, and spiral winding modules are also known.

Das zu filtrierende Medium wird mit Hilfe von Pumpen durch die Unfiltrat führenden Kanäle hindurchgefördert. Die erforderliche Pumpenergie bedeutet Betriebskosten. Diese sollen so klein wie möglich sein.The medium to be filtered is pumped through the channels that carry unfiltrate. The pump energy required means operating costs. These should be as small as possible.

Das einzelne Membranmodul soll ferner derart gestaltet sein und betrieben werden, dass es über einen möglichst langen Zeitraum hinweg betrieben werden kann, ohne gereinigt oder ausgetauscht zu werden. Dabei ist das Bilden sogenannter Deckschichten auf der Membran hinderlich. Solche Deckschichten bilden sich aus den Komponenten des zu filtrierenden Mediums.The individual membrane module should also be designed and operated in such a way that it can be operated for as long a period as possible without being cleaned or replaced. The formation of so-called cover layers on the membrane is a hindrance. Such cover layers are formed from the components of the medium to be filtered.

Man hat unter anderem schon versucht, die Deckschichtbildung mittels Rückspülung zu behindern oder gebildete Deckschichten sogar wieder aufzulösen. Auch wurde die Strömungsrichtüng des Unfiltrates durch den Unfiltrat führenden Kanal periodisch umgekehrt, so dass der Volumenstrom zunächst in einer ersten Richtung und nach einer gewissen Zeitspanne in der Gegenrichtung durch die unfiltratseitigen Kanäle wanderte. Dies hat jedoch nur eine begrenzte Wirkung. Es ist außerdem nur bei manchen Medien effektiv möglich.Among other things, attempts have already been made to hinder the formation of the cover layer by backwashing or even to dissolve the cover layers formed again. The direction of flow of the unfiltrate through the channel carrying unfiltrate was also periodically reversed, so that the volume flow initially in the first direction and after a certain period of time in the opposite direction wandered through the unfiltrate channels. However, this has only a limited effect. It is also only effectively possible with some media.

Die Erfinder haben auch versucht, den Volumenstrom durch den mediumführenden Kanal für einige Minuten abzuschalten. Auch dies hatte je nach zu filtrierendem Medium nur einen mäßigen oder gar keinen Erfolg.The inventors also tried to switch off the volume flow through the medium-carrying channel for a few minutes. This also had little or no success depending on the medium to be filtered.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung anzugeben, mit welchen der Filtrationsprozess in einer gegenüber dem Stande der Technik optimaleren Weise durchgeführt werden kann. So soll insbesondere der Energieaufwand gesenkt und die Standzeit von Filtermodulen verlängert werden.The invention is based on the object of specifying a method and a device with which the filtration process can be carried out in a manner which is more optimal than in the prior art. In particular, the energy consumption is to be reduced and the service life of filter modules is to be extended.

Diese Aufgabe wird durch die Merkmale der unabhängigen Ansprüche gelöst.This object is solved by the features of the independent claims.

Dem gemäß haben die Erfinder als wesentlich erkannt, dass der unfiltratseitigen Volumenstrom für extrem kleine Zeitspannen gestoppt wird. Dies kann durch Absperren des mediumführenden Kanals geschehen. Dabei wird unter „extrem kleinen Zeitspannen" eine Zeitspanne im Sekundenbereich oder im Millisekundenbereich verstanden. Gute Ergebnisse wurden bei Intervallen erzielt, das heißt Unterbrechungen zwischen zwei Umschaltungen, d. h. Cross- Flow/Dead-End von 60, 30, 10, 5, 4, 3, 2, 1 Sekunden. Als ganz besonders vorteilhaft haben sich Intervalle von weniger als einer Sekunde, beispielsweise 500, 200, 50 Millisekunden, erwiesen.Accordingly, the inventors recognized as essential that the unfiltered volume flow is stopped for extremely short periods of time. This can be done by shutting off the medium-carrying channel. “Extremely small time spans” is understood to mean a time span in the seconds range or in the millisecond range. Good results have been achieved at intervals, that is to say interruptions between two switchovers, ie crossflow / dead end of 60, 30, 10, 5, 4, 3, 2, 1. Intervals of less than one second, for example 500, 200, 50 milliseconds, have proven to be particularly advantageous.

Das Ergebnis des intermittierenden Absperrens besteht in einer extremen Verringerung des Energiebedarfes in Gestalt der Pumpenarbeit, weiterhin in einer hervorragenden Beeinträchtigung der Deckschichtbildung, und zwar auch bei sehr stark verunreinigten, zu filtrierenden Medien, beispielsweise bei Biomasse. Während der extrem kleinen Zeitspanne der Strömungsunterbrechung im mediumführenden Kanal bleibt der Druck im System weiterhin aufrechterhalten. Die Permeation, das heißt das Hindurchtreten von Permeat durch die Membran, findet weiterhin statt.The result of the intermittent shut-off consists in an extreme reduction in the energy requirement in the form of the pump work, and furthermore in an excellent impairment of the top layer formation, even in the case of very heavily contaminated media to be filtered, for example biomass. The pressure in the system continues to be maintained during the extremely short period of flow interruption in the medium-carrying channel. The permeation, i.e. the permeate passing through the membrane, continues to take place.

In der Praxis bedeutet dies, dass die Pumpenleistung dramatisch verringert werden kann.In practice, this means that pump performance can be dramatically reduced.

Die Erfindung ist anhand der Zeichnung näher erläutert. Darin ist im Einzelnen Folgendes dargestellt:The invention is explained in more detail with reference to the drawing. The following is shown in detail:

Figur 1 zeigt in schematischer Darstellung ein Filtrationsmodul mit mehreren Multikanalelementen.Figure 1 shows a schematic representation of a filtration module with several multi-channel elements.

Figur 2 zeigt ein Modul mit Hohlfasern oder Monokanälen.Figure 2 shows a module with hollow fibers or mono channels.

Figur 3 zeigt einen Spiralwickelmodul.Figure 3 shows a spiral winding module.

Figur 4 zeigt in einer perspektivischen Darstellung ein Multikanalelement.Figure 4 shows a perspective view of a multi-channel element.

Figur 5 ist eine Draufsicht auf eine Stirnseite eines Moduls ohne Abdeckung.Figure 5 is a top view of an end face of a module without a cover.

Figur 6 ist eine Draufsicht auf eine Stirnseite eines Moduls mit Abdeckung.Figure 6 is a top view of an end face of a module with a cover.

Figur 7 ist eine Draufsicht auf eine Stirnseite eines weiteren Moduls mit Abdeckung.Figure 7 is a top view of an end face of another module with cover.

Figur 8 zeigt in schematischer Darstellung eine Anlage mit einem Filtergerät.Figure 8 shows a schematic representation of a system with a filter device.

Das in Figur 1 gezeigte Modul weist eine Mehrzahl von Multikanalelementen 2 auf. Diese sind parallel zueinander angeordnet. Sie sind in ein Gehäuse 3 eingebaut und gegeneinander sowie gegen das Gehäuse durch Abdichtungen 4 abgedichtet. Das Gehäuse weist einen Einlass 3.1 für das zu filtrierende Medium auf, ferner einen Permeat-Auslass 3.2 sowie einen Retentat-Auslass 3.3.The module shown in FIG. 1 has a plurality of multi-channel elements 2. These are arranged parallel to each other. They are installed in a housing 3 and sealed off from one another and from the housing by seals 4. The housing has an inlet 3.1 for the medium to be filtered, a permeate outlet 3.2 and a retentate outlet 3.3.

Das in Figur 2 dargestellte Modul weist Hohlfasern mit Monokanälen 2.1 auf.The module shown in Figure 2 has hollow fibers with mono channels 2.1.

Das in Figur 3 gezeigte Modul ist Spiralwickelmodul bekannter Bauart, das ebenfalls gemäß der Erfindung gestaltet ist.The module shown in FIG. 3 is a spiral winding module of a known type, which is also designed in accordance with the invention.

Das in Figur 4 gezeigte Multikanalelement weist 19 Kanäle auf. Diese Zahl könnte auch größer oder kleiner sein.The multichannel element shown in FIG. 4 has 19 channels. This number could also be larger or smaller.

Rechts in der Figur sieht man eine Vergrößerung eines Kanals.On the right of the figure you can see an enlargement of a channel.

Der Gegenstand von Figur 5 läßt die Kontur der Einzelkanäle erkennen.The object of Figure 5 shows the contour of the individual channels.

Figur 6 zeigt den Gegenstand von Figur 5, jedoch ergänzt durch ein Absperrelement, das die Querschnittsflächen der Anströmseite oder Abströmseite eines Moduls zur Hälfte abdeckt. Es ist in der Mittelachse des Moduls gelagert. Es ist ein hier nicht gezeigter Antrieb vorgesehen, der das Absperrelement in eine Umdrehung um die Mittelachse versetzen kann. Die Drehrichtung kann auch umgekehrt werden, falls vorteilhaft.FIG. 6 shows the subject of FIG. 5, but supplemented by a shut-off element which half covers the cross-sectional areas of the upstream or downstream side of a module. It is stored in the central axis of the module. A drive, not shown here, is provided which can set the shut-off element in one revolution around the central axis. The direction of rotation can also be reversed if advantageous.

Das Absperrelement selbst kann je nach Anlagenkonfiguration an der An- oder Abströmseite des Unfiltrats am Modul angebracht werden. Vorteilhaft ist der Einbau des Absperrelementes zwischen zwei hintereinander geschaltetenDepending on the system configuration, the shut-off element itself can be attached to the module on the inflow or outflow side of the unfiltrate. It is advantageous to install the shut-off element between two cascaded

Modulen, hierbei wird mit einem Absperrelement das gepulste Cross-Flow für beide Module realisiert. Das Absperrorgan, das in der Regel aus Kreissegmenten aufgebaut ist, muss nicht zwangsläufig den Volumenstrom in den abgedeckten Unfiltratkanälen völlig unterbinden, eine Reduktion auf < 20 % des sich in geöffnetem Zustand des Absperrorgans einstellenden Volumenstrom in denModules, the pulsed cross-flow for both modules is realized with a shut-off element. The shut-off device, which is usually made up of circular segments, does not necessarily have to completely prevent the volume flow in the covered unfiltrate channels, a reduction to <20% of the volume flow that occurs when the shut-off device is open

Unfiltratkanälen ist für die gewünschte Wirkung absolut ausreichend. In Figur 6 ist ein Zustand dargestellt, bei dem einige der Kanäle 2.1 völlig offen sind, einige teilweise abgedeckt, andere vollständig abgedeckt sind.Unfiltrate channels are absolutely sufficient for the desired effect. FIG. 6 shows a state in which some of the channels 2.1 are completely open, some are partially covered, others are completely covered.

Die Führungskante des Absperrelementes sollte eine gerade Linie sein, die zu jedem Zeitpunkt auf einem Radius liegt. Auf diese Weise werden sämtliche Kanäle innerhalb einer gewissen Zeitspanne während eines gleich langen Zeitintervalles abgedeckt.The leading edge of the shut-off element should be a straight line that lies on a radius at all times. In this way, all channels are covered within a certain period of time during an equally long time interval.

Durch dieses Bauprinzip lässt sich ein hochfrequentes Freigeben und Absperren der Kanäle 2.1 erzielen. Dies bedeutet, dass die Absperr- beziehungsweiseThis construction principle enables high-frequency release and blocking of channels 2.1. This means that the shut-off respectively

Freigabezeitspannen im Millisekundenbereich liegen können.Release periods can be in the millisecond range.

Die Art des Antriebes spielt keine Rolle. So kann ein elektromagnetischer Antrieb verwendet werden, ein mechanischer Antrieb, oder ein sonstiger Antrieb. Auch ist es denkbar, durch entsprechende Gestaltung das Absperrelement 8 selbst antreibend zu machen.The type of drive does not matter. For example, an electromagnetic drive, a mechanical drive, or another drive can be used. It is also conceivable to make the shut-off element 8 itself driving by appropriate design.

Figur 7 unterscheidet sich vom Gegenstand gemäß Figur 6 lediglich durch eine andere Gestaltung des Absperrelementes. Wie man sieht, sind zwei quadrantenförmige Segmente und zwei spitzwinklige Segmente vorgesehen.Figure 7 differs from the object of Figure 6 only in a different design of the shut-off element. As you can see, two quadrant-shaped segments and two acute-angled segments are provided.

Die in Figur 8 gezeigte Anlage ist ein halb offenes System für kontinuierlichen Betrieb. Es umfasst als wichtigstes Bauteil eines oder mehrere der Module, die derart aufgebaut sein können, wie dies in Figur 1 dargestellt ist. Man erkennt ferner einen Behälter 6 für zu filtrierendes Medium. Aus diesem wird mittels einerThe system shown in Figure 8 is a semi-open system for continuous operation. As the most important component, it comprises one or more of the modules, which can be constructed as shown in FIG. 1. A container 6 for the medium to be filtered can also be seen. From this is a

Pumpe 7 ein Volumenstrom des Mediums abgezogen und dem Modul zugeführt. Die Zufuhr kann am einen oder am anderen Ende des Moduls erfolgen. Pump 7 a volume flow of the medium is withdrawn and fed to the module. The supply can take place at one or the other end of the module.

Claims

Patentansprüche claims 1. Verfahren zum Betreiben eines Filtrationsmoduls;1. Method for operating a filtration module; 1.1 mit Membran-Filterelementen in Gestalt von Hohlfaser-, Monokanal-, Multikanal- oder Spiralwickelelementen mit den folgenden Verfahrensschritten:1.1 with membrane filter elements in the form of hollow fiber, mono-channel, multi-channel or spiral winding elements with the following process steps: 1.2 es wird ein Volumenstrom eines zu filternden Mediums in das Eintrittsende des Unfiltrat führenden Kanals (2.1) eingeführt, dessen medium-berührte Wandfläche zumindest teilweise aus einer Membran gebildet ist; 1.3 es wird durch die Membran hindurchgetretenes Permeat durch einen Permeat-Auslass abgeführt;1.2 a volume flow of a medium to be filtered is introduced into the inlet end of the channel (2.1) carrying unfiltrate, the wall surface of which is in contact with the medium is at least partially formed from a membrane; 1.3 permeate which has passed through the membrane is discharged through a permeate outlet; 1.4 es wird am Austrittsende des mediumführenden Kanals (2.1) Unfiltrat/Retentat abgeführt;1.4 unfiltrate / retentate is removed at the outlet end of the medium-carrying channel (2.1); 1.5 der Unfiltrat-Einlass (Retentat-Einlass) des mediumführenden Kanals (2.1) und/oder der Retentat-Auslass werden intermittierend wenigstens teilweise abgesperrt und wieder geöffnet.1.5 the unfiltrate inlet (retentate inlet) of the medium-carrying channel (2.1) and / or the retentate outlet are intermittently at least partially shut off and opened again. 2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass die Zeitspanne des Absperrens und/oder des Öffnens ≤ 60, 30, 10, 5, 4, 3, 2 s ist.2. The method according to claim 1, characterized in that the time period of blocking and / or opening is ≤ 60, 30, 10, 5, 4, 3, 2 s. 3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass die Zeitspanne des Absperrens und/oder des Öffnens < 1 s ist.3. The method according to claim 2, characterized in that the time period of blocking and / or opening is <1 s. 4. Filtrationsmodul; 4.1 mit einem Membranfilterelement (2);4. filtration module; 4.1 with a membrane filter element (2); 4.2 das Membranfilterelement (2) ist ein Hohlfaser-, Monokanal-, Multikanal- oder Spiralwickelelement;4.2 the membrane filter element (2) is a hollow fiber, mono-channel, multi-channel or spiral winding element; 4.3 das Membranfilterelement (2) bildet mediumführende Kanäle (2.1), in die das zu filtrierende Medium einführbar ist; 4.4 die mediumführenden Kanäle (2.1) weisen Auslässe (2.3) zum Abführen von Retentat auf; 4.3 the membrane filter element (2) forms medium-carrying channels (2.1) into which the medium to be filtered can be introduced; 4.4 the medium-carrying channels (2.1) have outlets (2.3) for the removal of retentate; 4.5 es ist ein Permeat-Kanal (3.2) zum Abführen von durch die Membran gewandertem Permeat vorgesehen;4.5 a permeate channel (3.2) is provided for removing permeate that has migrated through the membrane; 4.6 der Unfiltrat-Einlass (Retentat-Einlass) (3.3) und/oder der Retentat-Auslass (3.2) weisen Vorrichtungen zu deren intermittierendem Absperren und Öffnen auf.4.6 the unfiltrate inlet (retentate inlet) (3.3) and / or the retentate outlet (3.2) have devices for their intermittent shutoff and opening. 5. Filtrationsmodul nach Anspruch 4, dadurch gekennzeichnet, dass die Absperrvorrichtung aus einem drehbar gelagerten Element besteht, das den Unfiltrat seifigen Eintritts- oder Austrittsquerschnitt der installierten Membran (2) nur teilweise abdeckt, und das vorzugsweise um die Mittelachse des Moduls rotierbar ist. 5. Filtration module according to claim 4, characterized in that the shut-off device consists of a rotatably mounted element which only partially covers the unfiltrate soapy inlet or outlet cross section of the installed membrane (2), and which is preferably rotatable about the central axis of the module.
PCT/EP2004/010099 2003-09-13 2004-09-10 Filtration module comprising membrane filter elements Ceased WO2005028087A1 (en)

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
FR2909008A1 (en) * 2006-11-27 2008-05-30 Vaslin Bucher Sa Fibrous deposits formation preventing device for use during filtration of e.g. wort, has scrapper member carrying out intermittent/continuous scrapping or chopping action in common input plane of beam of capillary or tubular membrane
NL2000799C2 (en) * 2007-08-08 2009-02-10 Prime Water Internat N V Device for filtering contaminated water.

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WO2000029100A1 (en) * 1998-11-13 2000-05-25 Orelis Method and device for continuous filtering in liquid medium and uses

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US5240612A (en) * 1991-02-13 1993-08-31 Techsep Filtration of liquid media under conditions of non-steady tangential flow
WO2000029100A1 (en) * 1998-11-13 2000-05-25 Orelis Method and device for continuous filtering in liquid medium and uses

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2909008A1 (en) * 2006-11-27 2008-05-30 Vaslin Bucher Sa Fibrous deposits formation preventing device for use during filtration of e.g. wort, has scrapper member carrying out intermittent/continuous scrapping or chopping action in common input plane of beam of capillary or tubular membrane
EP1944077A1 (en) 2006-11-27 2008-07-16 Bucher Vaslin Device for preventing the formation of deposits at the entrance of tubular or capillary membranes of a tangential filtration module
EP2508248A1 (en) 2006-11-27 2012-10-10 Bucher Vaslin (Société Anonyme) Device for preventing the formation of deposits at the entrance of tubular or capillary membranes of a tangential filtration module
NL2000799C2 (en) * 2007-08-08 2009-02-10 Prime Water Internat N V Device for filtering contaminated water.
WO2009019592A3 (en) * 2007-08-08 2009-04-02 Prime Water Internat Nv Capillary membrane filter with manually activated backwash pump
KR101545363B1 (en) 2007-08-08 2015-08-18 라이프스트로 에스에이 Capillary membrane filter with manually activated backwash pump

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