DE10301860A1 - Membrane filter assembly with capillary membranes, to clean drinking water and treat communal/industrial sewage, has a circuit linked to the permeate collection zone and a cleaning liquid feed to clean them together - Google Patents
Membrane filter assembly with capillary membranes, to clean drinking water and treat communal/industrial sewage, has a circuit linked to the permeate collection zone and a cleaning liquid feed to clean them together Download PDFInfo
- Publication number
- DE10301860A1 DE10301860A1 DE10301860A DE10301860A DE10301860A1 DE 10301860 A1 DE10301860 A1 DE 10301860A1 DE 10301860 A DE10301860 A DE 10301860A DE 10301860 A DE10301860 A DE 10301860A DE 10301860 A1 DE10301860 A1 DE 10301860A1
- Authority
- DE
- Germany
- Prior art keywords
- permeate
- capillary membranes
- cleaning liquid
- permeate collection
- collection space
- 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.)
- Withdrawn
Links
- 239000012466 permeate Substances 0.000 title claims abstract description 87
- 238000004140 cleaning Methods 0.000 title claims abstract description 66
- 210000001601 blood-air barrier Anatomy 0.000 title claims abstract description 62
- 239000007788 liquid Substances 0.000 title claims abstract description 49
- 239000012528 membrane Substances 0.000 title claims abstract description 28
- 239000003651 drinking water Substances 0.000 title description 2
- 235000020188 drinking water Nutrition 0.000 title description 2
- 239000010865 sewage Substances 0.000 title 1
- 238000000034 method Methods 0.000 claims description 22
- 238000011001 backwashing Methods 0.000 claims description 18
- 238000005192 partition Methods 0.000 claims description 14
- 239000012530 fluid Substances 0.000 claims description 9
- 239000003599 detergent Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims 1
- 238000011010 flushing procedure Methods 0.000 abstract description 4
- 230000003134 recirculating effect Effects 0.000 abstract 2
- 239000000835 fiber Substances 0.000 description 8
- 238000001914 filtration Methods 0.000 description 4
- 238000005374 membrane filtration Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000001580 bacterial effect Effects 0.000 description 2
- 230000009189 diving Effects 0.000 description 2
- 230000009969 flowable effect Effects 0.000 description 2
- 206010061217 Infestation Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000010841 municipal wastewater Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- 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
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
-
- 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
- B01D63/04—Hollow fibre modules comprising multiple hollow fibre assemblies
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
-
- 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
- B01D2321/10—Use of feed
-
- 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
- B01D2321/18—Use of gases
- B01D2321/185—Aeration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur permeatseitigen Reinigung einer mit Kapillarmembranen bestückten Membrananlage, deren Kapillarmembranen mit einem offenen, dem Permeatabfluss dienenden Ende an einen Permeatsammelraum angeschlossen sind.The invention relates to a method for cleaning the permeate side of a membrane system equipped with capillary membranes, their capillary membranes with an open permeate outlet Are connected at the end to a permeate collection space.
Membrananlagen zur Membranfiltration werden unter anderem zur Trinkwasseraufbereitung und zur Reinigung von kommunalem Abwasser und Industrieabwässern eingesetzt. Die Kapillarmembranen besitzen einen Durchmesser von weniger als 5 mm, wobei ein Durchmesserbereich zwischen 0,5 mm und 3 mm für viele Anwendung bevorzugt ist. Die Kapillarmembranen werden außenseitig von einer zu reinigenden Flüssigkeit umströmt oder sind in ein Becken mit der zu reinigenden Flüssigkeit abgetaucht. Die Triebkraft für die Membranfiltration ist eine Druckdifferenz, die rohwasserseitig durch einen Überdruck und/oder durch eine permeatseitige Druckerniedrigung realisiert werden kann. Die gereinigte Flüssigkeit, das Permeat, fließt im Innern der Kapillarmembranen ab und gelangt am offenen Ende der Kapillarmembranen in einen Permeatsammelraum, der mit einem Auslass für das Permeat ausgebildet ist.Membrane systems for membrane filtration are used, among other things, for drinking water treatment and cleaning of municipal wastewater and industrial wastewater. The capillary membranes have a diameter of less than 5 mm, with a diameter range between 0.5 mm and 3 mm for many application is preferred. The capillary membranes become outside of a liquid to be cleaned flows around or are in a basin with the liquid to be cleaned submerged. The driving force for Membrane filtration is a pressure difference on the raw water side by overpressure and / or can be realized by lowering the permeate pressure. The cleaned liquid, the permeate flows inside the capillary membranes and reaches the open end of the Capillary membranes in a permeate collection chamber with an outlet for the Permeate is formed.
In vorgegebenen Intervallen ist eine Spülung des Permeatsammelraumes mit einer Reinigungflüssigkeit erforderlich, um Feststoffe, bakteriellen Bewuchs, organische Rückstände und dergleichen zu beseitigen. Ferner erfolgt in vorgegebenen Intervallen eine Rückspülung der Kapillarmembranen. Hierbei wird eine Reinigungsflüssigkeit unter Druck dem Permeatsammelraum zugeführt, strömt in die Kapillarmembranen ein und permeiert durch die Kapillarmembranen hindurch nach außen. Dabei muss bei einer Rückspülung sichergestellt werden, dass alle Kapillarmembranen der zumeist aus mehreren Filtereinheiten bestehenden Membrananlage gleichmäßig mit der Reinigungsflüssigkeit beaufschlagt wird.At predetermined intervals there is a Flushing the Permeate collection space with a cleaning liquid required to remove solids, eliminate bacterial growth, organic residues and the like. In addition, backwashing takes place at predetermined intervals Capillary membranes. This is a cleaning liquid fed to the permeate collection space under pressure, flows into the capillary membranes and permeates out through the capillary membranes. there must be ensured during backwashing that all capillary membranes mostly consist of multiple filter units existing membrane system evenly with the cleaning liquid is applied.
Bei einer aus
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren anzugeben, das eine wirksame Rückspülung der Kapillarmem branen und eine gute Reinigung des Permeatsammelraumes ermöglicht.The invention is based on the object Specify a process that ensures effective backwashing of the capillary membranes and allows a good cleaning of the permeate collection space.
Diese Aufgabe wird erfindungsgemäß durch das in Anspruch 1 angegebene Verfahren gelöst. Erfindungsgemäß ist der Permeatsammelraum der Membrananlage in eine mit einer Umwälzpumpe ausgerüstete Kreislaufleitung eingebunden. Diese wird bei einer permeatseitigen Reinigung mit Reinigungsflüssigkeit zunächst befüllt. Die Reinigungsflüssigkeit wird danach im geschlossenen Kreislauf gleichmäßig im Permeatsammelraum verteilt, wobei die zum Permeatsammelraum offenen Enden der Kapillarmembranen von der im Kreislauf umgewälzten Reinigungsflüssigkeit überströmt und dabei vorzugsweise ohne Rückspülung der Kapillarmembran gemeinsam mit dem Permeatsammelraum gereinigt werden. Mit dem beschriebenen Verfahren ist eine gleichmäßige permeatseitige Reinigung auch bei großen Anlagen möglich. Sie ist besonders effektiv, wenn gemäß der bevorzugten Verfahrensführung in einem ersten Verfahrensschritt die Reinigungsflüssigkeit im geschlossenen Kreislauf lediglich umgewälzt wird, ohne dass eine Rückspülung durch die Kapillarmembranen erfolgt.This object is achieved by the Method specified in claim 1 solved. According to the Permeate collection chamber of the membrane system in a circuit line equipped with a circulation pump involved. This is included in cleaning on the permeate side cleaning fluid first filled. The cleaning liquid is then distributed evenly in the permeate collection chamber in a closed circuit, the ends of the capillary membranes open to the permeate collection space overflowing with the circulating cleaning liquid and thereby preferably without backwashing the Capillary membrane to be cleaned together with the permeate collection space. With the described method, uniform permeate-side cleaning is possible even with large ones Investments possible. It is particularly effective when, according to the preferred procedure, in one first process step the cleaning liquid in a closed circuit just circulated without backwashing the capillary membranes are made.
Gemäß einer weiteren bevorzugten Ausführung der Erfindung durchströmt die Reinigungsflüssigkeit nacheinander zwei Kammern, in die der Permeatsammelraum durch eine sich bis in die Nähe der Kapillarmembran-Enden erstreckende Trennwand unterteilt ist. Bei einer Spülung des Permeatsammelraumes strömt die Reinigungsflüssigkeit in eine Kammer ein, überströmt die Trennwand des Permeatsammelraumes und strömt in der anderen Kammer ab. Bei der Überströmung der Trennwand wird die Flüssigkeit an den offenen Enden der Kapil larmembranen vorbeigeführt, wobei die Enden der Kapillarmembranen wirksam gereinigt werden. Mit der erfindungsgemäßen Verfahrensführung ist eine gründliche Reinigung des Permeatsammelraumes sowie der Anströmfläche der Kapillarmembranen möglich, da die Enden der Kapillarmembranen stets mit sauberer bzw. bei mehrfacher Umwälzung der Flüssigkeit mit lediglich gering verschmutzter Reinigungsflüssigkeit beaufschlagt wird.According to another preferred execution flows through the invention the cleaning liquid one after the other two chambers, into which the permeate collection space through a yourself up close of the capillary membrane ends extending partition is divided. With a rinse of the permeate collection space flows the cleaning liquid into a chamber, overflows the partition of the permeate collection space and flows in the other chamber. When the partition wall overflows, the liquid led past the open ends of the capillary membrane, whereby the ends of the capillary membranes are effectively cleaned. With the procedure according to the invention a thorough Cleaning the permeate collection area and the inflow surface of the Capillary membranes possible because the ends of the capillary membranes always with clean or with multiple circulation the liquid only slightly contaminated cleaning liquid is applied.
In weiterer Ausgestaltung lehrt die Erfindung, dass im Anschluss an den ersten Reinigungsvorgang die Reinigungsflüssigkeit ausgetauscht wird und danach die Kapillarmembranen durch Rückspülung gereinigt werden. Die frische Reinigungsflüssigkeit für den nachfolgenden Reinigungsvorgang wird vorzugsweise vor der Rückspülung zunächst durch Zirkulation im geschlossenen Kreislauf gleichmäßig im Permeatsammelraum verteilt.In a further embodiment, the Invention that following the first cleaning process cleaning fluid is replaced and then the capillary membranes are cleaned by backwashing become. The fresh cleaning liquid for the subsequent cleaning process is preferably carried out first before backwashing Circulation in a closed circuit evenly distributed in the permeate collection space.
Gegenstand der Erfindung ist auch eine zur Durchführung des beschriebenen Verfahrens geeignete Membrananlage nach Anspruch 5. Zum grundsätzlichen Aufbau der Membrananlage gehören mindestens ein Membranfilter, das mit Kapillarmembranen bestückt ist und einen Permeatsammelraum aufweist, an den die Kapillarmembranen mit permeatseitig offenen Enden angeschlossen sind. Erfindungsgemäß weist der Permeatsammelraum einen Strömungseinlass und einen Strömungsauslass für Reinigungsflüssigkeit auf und ist in einer mit einer Pumpe versehenen Kreislaufleitung dergestalt eingebunden, dass die Enden der Kapillarmembranen von der den Permeatsammelraum durchströmenden Reinigungsflüssigkeit überströmbar sind. An die Kreislaufleitung ist eine Einrichtung mit einer Speisepumpe für die Zuführung der Reinigungsflüssigkeit, ein Permeatablauf und ein Reinigungsmittelablauf angeschlossen. Vorzugsweise ist der Permeatsammelraum durch eine sich bis in die Nähe der Kapillarmembranen erstreckenden Trennwand in zwei Kammern unterteilt, die bei einem Übertritt der Reinigungsflüssigkeit über die Trennwand nacheinander durchströmbar sind. Der Abstand der Trennwand ist von der Anströmfläche der Kapillarmembranen so gewählt, dass der beim Überströmen der Trennwand auftretende Druckverlust größer ist als der Strömungsdruckverlust in den Kammern.The invention also relates to a method suitable for carrying out the method described The basic structure of the membrane system includes at least one membrane filter that is equipped with capillary membranes and has a permeate collection space to which the capillary membranes are connected with ends that are open on the permeate side. According to the invention, the permeate collecting space has a flow inlet and a flow outlet for cleaning liquid and is integrated in a circuit line provided with a pump such that the ends of the capillary membranes can be overflowed by the cleaning liquid flowing through the permeate collecting space. A device with a feed pump for supplying the cleaning liquid, a permeate outlet and a cleaning agent outlet is connected to the circuit line. The permeate collecting space is preferably divided into two chambers by a partition wall which extends into the vicinity of the capillary membranes and through which the cleaning liquid can flow in succession through the partition wall. The distance between the dividing wall and the inflow surface of the capillary membranes is selected so that the pressure loss that occurs when the dividing wall flows over it is greater than the flow pressure loss in the chambers.
Im Folgenden wird die Erfindung anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung erläutert. Es zeigen schematisch:The invention is described below one is just an embodiment illustrative drawing explained. They show schematically:
Das in
Den
Die
In vorgegebenen Intervallen ist jedoch
eine Reinigung des Permeatsammelraumes
Die Reinigungsflüssigkeit
Im Anschluss an den beschriebenen
Reinigungsvorgang wird die Reinigungsflüssigkeit
In vorgegebenen Intervallen ist auch
eine Rückspülung der
Kapillarmembranen
In
Claims (7)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10301860A DE10301860A1 (en) | 2003-01-17 | 2003-01-17 | Membrane filter assembly with capillary membranes, to clean drinking water and treat communal/industrial sewage, has a circuit linked to the permeate collection zone and a cleaning liquid feed to clean them together |
PCT/EP2004/000095 WO2004064985A1 (en) | 2003-01-17 | 2004-01-09 | Membrane system and method for permeate side cleaning of said system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10301860A DE10301860A1 (en) | 2003-01-17 | 2003-01-17 | Membrane filter assembly with capillary membranes, to clean drinking water and treat communal/industrial sewage, has a circuit linked to the permeate collection zone and a cleaning liquid feed to clean them together |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10301860A1 true DE10301860A1 (en) | 2004-07-29 |
Family
ID=32602731
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10301860A Withdrawn DE10301860A1 (en) | 2003-01-17 | 2003-01-17 | Membrane filter assembly with capillary membranes, to clean drinking water and treat communal/industrial sewage, has a circuit linked to the permeate collection zone and a cleaning liquid feed to clean them together |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE10301860A1 (en) |
WO (1) | WO2004064985A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005035044A1 (en) * | 2005-07-27 | 2007-02-01 | Koch Membrane Systems Gmbh | Backwashing capillary membranes of membrane arrangement for filtering drinking water comprises filling permeate chamber with cleaning liquid and adjusting pressure in permeate chamber |
DE102004020226B4 (en) * | 2004-04-02 | 2007-02-01 | Koch Membrane Systems Gmbh | membrane filter |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4349440A (en) * | 1977-11-21 | 1982-09-14 | Esmond William G | Capillary tube exchange device |
US5403479A (en) * | 1993-12-20 | 1995-04-04 | Zenon Environmental Inc. | In situ cleaning system for fouled membranes |
CN1112956C (en) * | 1996-08-22 | 2003-07-02 | 三菱丽阳株式会社 | Hollow fiber membrane module, hollow fiber membrane module unit using same, and septic tank provided with module unit |
DE10161095C1 (en) * | 2001-12-12 | 2002-11-07 | Klaus Vosenkaul | Process for membrane filtration of liquids e.g. water, uses fiber bundle of capillary membranes having one end cast in headpiece open to permeate collecting chamber of the headpiece and a freely moving closed end |
-
2003
- 2003-01-17 DE DE10301860A patent/DE10301860A1/en not_active Withdrawn
-
2004
- 2004-01-09 WO PCT/EP2004/000095 patent/WO2004064985A1/en active Application Filing
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004020226B4 (en) * | 2004-04-02 | 2007-02-01 | Koch Membrane Systems Gmbh | membrane filter |
DE102005035044A1 (en) * | 2005-07-27 | 2007-02-01 | Koch Membrane Systems Gmbh | Backwashing capillary membranes of membrane arrangement for filtering drinking water comprises filling permeate chamber with cleaning liquid and adjusting pressure in permeate chamber |
Also Published As
Publication number | Publication date |
---|---|
WO2004064985A1 (en) | 2004-08-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8127 | New person/name/address of the applicant |
Owner name: KOCH MEMBRANE SYSTEMS GMBH, 52070 AACHEN, DE |
|
8139 | Disposal/non-payment of the annual fee |