DE202004012693U1 - Coupling system for a filter module for filtering liquids by reverse osmosis, microfiltration and ultra- and nano-filtration comprises a connection between a filter module and a tubular system using a tubular coupling on an end region - Google Patents
Coupling system for a filter module for filtering liquids by reverse osmosis, microfiltration and ultra- and nano-filtration comprises a connection between a filter module and a tubular system using a tubular coupling on an end region Download PDFInfo
- Publication number
- DE202004012693U1 DE202004012693U1 DE200420012693 DE202004012693U DE202004012693U1 DE 202004012693 U1 DE202004012693 U1 DE 202004012693U1 DE 200420012693 DE200420012693 DE 200420012693 DE 202004012693 U DE202004012693 U DE 202004012693U DE 202004012693 U1 DE202004012693 U1 DE 202004012693U1
- Authority
- DE
- Germany
- Prior art keywords
- coupling
- filter module
- pipe
- connection
- tubular
- 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.)
- Expired - Lifetime
Links
- 230000008878 coupling Effects 0.000 title claims abstract description 41
- 238000010168 coupling process Methods 0.000 title claims abstract description 41
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 41
- 238000001914 filtration Methods 0.000 title description 2
- 239000007788 liquid Substances 0.000 title description 2
- 238000001471 micro-filtration Methods 0.000 title description 2
- 238000001728 nano-filtration Methods 0.000 title description 2
- 238000001223 reverse osmosis Methods 0.000 title description 2
- 238000000108 ultra-filtration Methods 0.000 title description 2
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 238000007789 sealing Methods 0.000 description 6
- 230000004323 axial length Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 101000905241 Mus musculus Heart- and neural crest derivatives-expressed protein 1 Proteins 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
-
- 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
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/10—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
- B01D61/20—Accessories; Auxiliary operations
-
- 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
- B01D63/06—Tubular membrane modules
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/10—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations
- F16L27/107—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations the ends of the pipe being interconnected by a flexible sleeve
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/13—Specific connectors
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Supply & Treatment (AREA)
- General Engineering & Computer Science (AREA)
- Nanotechnology (AREA)
- Mechanical Engineering (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- External Artificial Organs (AREA)
Abstract
Description
Bei der Wasserreinigung bzw. Abwasseraufbereitung wird zur Reinigung von Flüssigkeiten häufig die Umkehrosmose, Mikrofiltration, Ultra- und Nanofiltration eingesetzt. Für die Anwendung dieser Verfahren werden Filtermodule verwendet, die üblicherweise aus einem Druckrohr, das durch Dichtungs- und Endplatten nach außen abgeschlossen ist, bestehen. Im Inneren des Rohres befinden sich Filtrationsmembranen in Form von beispielsweise Membranstapeln oder einer Vielzahl Röhren. Diese Filtermodule sind in Rohrsystemen eingebaut, wobei das Gehäuse des Filtermoduls und die entsprechenden Rohrsysteme bzw. die Anschlusselemente des Rohrsystems aus unterschiedlichen Werkstoffen bestehen können. Unterschiedliche Werkstoffe weisen bekanntermaßen unterschiedliche Wärmeausdehnungskoeffizienten auf, so dass je nach Betriebsbedingungen die an den Verbindungsstellen Filtermodul/Rohrleitung auftretenden Längenänderungen bedingt durch Temperaturschwankungen und Druck nicht vernachlässigbar sind.at water purification or wastewater treatment becomes purification of liquids frequently reverse osmosis, microfiltration, ultra and nanofiltration are used. For the Applying these methods, filter modules are commonly used from a pressure pipe, which is closed to the outside by sealing and end plates, consist. Filtration membranes are located inside the tube in the form of, for example, membrane stacks or a large number of tubes. These filter modules are installed in pipe systems, the housing of the filter module and the corresponding pipe systems or the connection elements of the pipe system can consist of different materials. Different materials are known to have different coefficients of thermal expansion on, so that depending on the operating conditions at the connection points Changes in length of the filter module / pipeline due to temperature fluctuations and pressure not negligible are.
Eine Übertragung von derartig auftretenden Zug- / Druckspannungen auf das Filtermodulgehäuse muss in jedem Fall vermieden werden, da es ansonsten zur Beschädigung des Filtermoduls kommen kann.A transfer of tensile / compressive stresses that occur in this way on the filter module housing be avoided in any case, otherwise it will damage the Filter module can come.
Bekannt
ist es eine Kupplung zumindest an einem Ende des Filtergehäuses zur
Verbindung mit dem Rohrleitungssystem einzusetzen, die eine zugfeste
Verbindung Rohrleitung/Filtermodulgehäuse darstellt (
Aufgabe der vorliegenden Erfindung ist es daher, ein Kupplungssystem für zu kuppelnde Elemente wie Filtermodule, Filteranschlussstutzen sowie Rohrelemente derart weiterzubilden, das ein axialer Längenausgleich sichergestellt ist und eine Übertragung von unerwünscht auftretenden Spannungen auf die zu kuppelnden Elemente vermieden wird.task The present invention is therefore a coupling system for to be coupled Elements such as filter modules, filter connections and pipe elements to develop in such a way that an axial length compensation is ensured is and a transfer of undesirable occurring stresses on the elements to be coupled is avoided.
Diese Aufgabe wird dadurch gelöst, das als Rohrkupplung an zumindest einem Ende des Filtermoduls eine nichtzugfeste Rohrkupplung eingesetzt wird, die eine Verbindung zwischen Filtermodulgehäuse und Rohrleitung herstellt. Diese nichtzugfeste Rohrkupplung ist im Handel erhältlich und wird beispielsweise von der Firma Georg Fischer GF als Rohrkupplungstyp „GF Flex" oder von der Firma Straub als Typ „Straubflex" vertrieben.This Task is solved by the one as a pipe coupling on at least one end of the filter module Non-tensile pipe coupling is used, which is a connection between filter module housing and pipeline. This is non-tensile pipe coupling available in the stores and is used for example by the company Georg Fischer GF as a pipe coupling type "GF Flex" or by the company Straub sold as type "Straubflex".
Vorteilhaft an der Verwendung dieser nicht zugfesten Rohrkupplung ist es, dass mittels der Verbindung zwar eine Abdichtung des Systems erreicht wird, wobei allerdings ein axialer Längenausgleich der gekuppelten Elemente noch möglich ist. Durch den Einsatz der nichtzugfesten Rohrkupplung wir die Oberfläche der zu kuppelnden Elemente nicht beschädigt, da die Rohrkupplung mit einer elastischen Dichtungsmanschette ausgekleidet ist.Advantageous the use of this non-tensile pipe coupling is that a seal of the system is achieved by means of the connection, however, an axial length compensation of the coupled elements still possible is. By using the non-tensile pipe coupling, the surface of the elements to be coupled are not damaged since the pipe coupling with an elastic sealing sleeve is lined.
Aufgrund
der Fixierung des Filtermoduls
Die
in der Zeichnung nur schematisch dargestellten nichtzugfesten Rohrkupplungen
Beim
Verspannen der Rohrkupplung
Aus
der schematischen Darstellung der
Aufgrund
der vorstehend beschriebenen Ausbildung des mehrfach umgelenkten
Rohrleitungselementes, das aus Kunststoff besteht, ist eine Axialdehnung
zwischen der Rohrleitung und dem Anschlussstutzen, d.h. ein Mitwandern
der Anschlussstutzen
Claims (6)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200420012693 DE202004012693U1 (en) | 2004-08-13 | 2004-08-13 | Coupling system for a filter module for filtering liquids by reverse osmosis, microfiltration and ultra- and nano-filtration comprises a connection between a filter module and a tubular system using a tubular coupling on an end region |
NO20053769A NO20053769L (en) | 2004-08-13 | 2005-08-08 | Filter module coupling system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200420012693 DE202004012693U1 (en) | 2004-08-13 | 2004-08-13 | Coupling system for a filter module for filtering liquids by reverse osmosis, microfiltration and ultra- and nano-filtration comprises a connection between a filter module and a tubular system using a tubular coupling on an end region |
Publications (1)
Publication Number | Publication Date |
---|---|
DE202004012693U1 true DE202004012693U1 (en) | 2004-10-14 |
Family
ID=33305531
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200420012693 Expired - Lifetime DE202004012693U1 (en) | 2004-08-13 | 2004-08-13 | Coupling system for a filter module for filtering liquids by reverse osmosis, microfiltration and ultra- and nano-filtration comprises a connection between a filter module and a tubular system using a tubular coupling on an end region |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE202004012693U1 (en) |
NO (1) | NO20053769L (en) |
Cited By (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008071516A1 (en) * | 2006-12-13 | 2008-06-19 | Otv Sa | Ultrafiltration or microfiltration plant and method for maintaining such plant |
FR2912321A1 (en) * | 2007-02-13 | 2008-08-15 | Otv Sa | ASSEMBLY OF ULTRAFILTRATION OR MICROFILTRATION MEMBRANE MODULES, MEMBRANE MODULE, CONSTRUCTION AND CORRESPONDING MAINTENANCE PROCESS |
EP2331242A1 (en) * | 2008-07-24 | 2011-06-15 | Siemens Industry, Inc. | Frame system for membrane filtration modules |
US8377305B2 (en) | 2004-09-15 | 2013-02-19 | Siemens Industry, Inc. | Continuously variable aeration |
US8496828B2 (en) | 2004-12-24 | 2013-07-30 | Siemens Industry, Inc. | Cleaning in membrane filtration systems |
WO2013113833A1 (en) * | 2012-02-03 | 2013-08-08 | Intewa Gmbh | Filter station |
US8506806B2 (en) | 2004-09-14 | 2013-08-13 | Siemens Industry, Inc. | Methods and apparatus for removing solids from a membrane module |
US8512568B2 (en) | 2001-08-09 | 2013-08-20 | Siemens Industry, Inc. | Method of cleaning membrane modules |
US8518256B2 (en) | 2001-04-04 | 2013-08-27 | Siemens Industry, Inc. | Membrane module |
US8623202B2 (en) | 2007-04-02 | 2014-01-07 | Siemens Water Technologies Llc | Infiltration/inflow control for membrane bioreactor |
US8622222B2 (en) | 2007-05-29 | 2014-01-07 | Siemens Water Technologies Llc | Membrane cleaning with pulsed airlift pump |
US8758622B2 (en) | 2004-12-24 | 2014-06-24 | Evoqua Water Technologies Llc | Simple gas scouring method and apparatus |
US8758621B2 (en) | 2004-03-26 | 2014-06-24 | Evoqua Water Technologies Llc | Process and apparatus for purifying impure water using microfiltration or ultrafiltration in combination with reverse osmosis |
US8790515B2 (en) | 2004-09-07 | 2014-07-29 | Evoqua Water Technologies Llc | Reduction of backwash liquid waste |
US8808540B2 (en) | 2003-11-14 | 2014-08-19 | Evoqua Water Technologies Llc | Module cleaning method |
US8858796B2 (en) | 2005-08-22 | 2014-10-14 | Evoqua Water Technologies Llc | Assembly for water filtration using a tube manifold to minimise backwash |
US8956464B2 (en) | 2009-06-11 | 2015-02-17 | Evoqua Water Technologies Llc | Method of cleaning membranes |
US9022224B2 (en) | 2010-09-24 | 2015-05-05 | Evoqua Water Technologies Llc | Fluid control manifold for membrane filtration system |
US9533261B2 (en) | 2012-06-28 | 2017-01-03 | Evoqua Water Technologies Llc | Potting method |
US9604166B2 (en) | 2011-09-30 | 2017-03-28 | Evoqua Water Technologies Llc | Manifold arrangement |
US9675938B2 (en) | 2005-04-29 | 2017-06-13 | Evoqua Water Technologies Llc | Chemical clean for membrane filter |
US9764288B2 (en) | 2007-04-04 | 2017-09-19 | Evoqua Water Technologies Llc | Membrane module protection |
US9764289B2 (en) | 2012-09-26 | 2017-09-19 | Evoqua Water Technologies Llc | Membrane securement device |
US9815027B2 (en) | 2012-09-27 | 2017-11-14 | Evoqua Water Technologies Llc | Gas scouring apparatus for immersed membranes |
US9914097B2 (en) | 2010-04-30 | 2018-03-13 | Evoqua Water Technologies Llc | Fluid flow distribution device |
US9925499B2 (en) | 2011-09-30 | 2018-03-27 | Evoqua Water Technologies Llc | Isolation valve with seal for end cap of a filtration system |
US9962865B2 (en) | 2012-09-26 | 2018-05-08 | Evoqua Water Technologies Llc | Membrane potting methods |
US10322375B2 (en) | 2015-07-14 | 2019-06-18 | Evoqua Water Technologies Llc | Aeration device for filtration system |
US10427102B2 (en) | 2013-10-02 | 2019-10-01 | Evoqua Water Technologies Llc | Method and device for repairing a membrane filtration module |
-
2004
- 2004-08-13 DE DE200420012693 patent/DE202004012693U1/en not_active Expired - Lifetime
-
2005
- 2005-08-08 NO NO20053769A patent/NO20053769L/en not_active Application Discontinuation
Cited By (46)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8518256B2 (en) | 2001-04-04 | 2013-08-27 | Siemens Industry, Inc. | Membrane module |
US8512568B2 (en) | 2001-08-09 | 2013-08-20 | Siemens Industry, Inc. | Method of cleaning membrane modules |
US8808540B2 (en) | 2003-11-14 | 2014-08-19 | Evoqua Water Technologies Llc | Module cleaning method |
US8758621B2 (en) | 2004-03-26 | 2014-06-24 | Evoqua Water Technologies Llc | Process and apparatus for purifying impure water using microfiltration or ultrafiltration in combination with reverse osmosis |
US8790515B2 (en) | 2004-09-07 | 2014-07-29 | Evoqua Water Technologies Llc | Reduction of backwash liquid waste |
US8506806B2 (en) | 2004-09-14 | 2013-08-13 | Siemens Industry, Inc. | Methods and apparatus for removing solids from a membrane module |
US8377305B2 (en) | 2004-09-15 | 2013-02-19 | Siemens Industry, Inc. | Continuously variable aeration |
US8496828B2 (en) | 2004-12-24 | 2013-07-30 | Siemens Industry, Inc. | Cleaning in membrane filtration systems |
US8758622B2 (en) | 2004-12-24 | 2014-06-24 | Evoqua Water Technologies Llc | Simple gas scouring method and apparatus |
US9675938B2 (en) | 2005-04-29 | 2017-06-13 | Evoqua Water Technologies Llc | Chemical clean for membrane filter |
US8894858B1 (en) | 2005-08-22 | 2014-11-25 | Evoqua Water Technologies Llc | Method and assembly for water filtration using a tube manifold to minimize backwash |
US8858796B2 (en) | 2005-08-22 | 2014-10-14 | Evoqua Water Technologies Llc | Assembly for water filtration using a tube manifold to minimise backwash |
WO2008071516A1 (en) * | 2006-12-13 | 2008-06-19 | Otv Sa | Ultrafiltration or microfiltration plant and method for maintaining such plant |
FR2909902A1 (en) * | 2006-12-13 | 2008-06-20 | Otv Sa | ULTRAFILTRATION OR MICRO-FILTRATION INSTALLATION AND METHOD OF MAINTAINING SUCH A INSTALLATION |
WO2008101816A3 (en) * | 2007-02-13 | 2008-10-16 | Otv Sa | Assembly of ultrafiltration or microfiltration membrane modules, and corresponding membrane module, structure and maintenance method |
WO2008101816A2 (en) * | 2007-02-13 | 2008-08-28 | Otv Sa | Assembly of ultrafiltration or microfiltration membrane modules, and corresponding membrane module, structure and maintenance method |
FR2912321A1 (en) * | 2007-02-13 | 2008-08-15 | Otv Sa | ASSEMBLY OF ULTRAFILTRATION OR MICROFILTRATION MEMBRANE MODULES, MEMBRANE MODULE, CONSTRUCTION AND CORRESPONDING MAINTENANCE PROCESS |
US8623202B2 (en) | 2007-04-02 | 2014-01-07 | Siemens Water Technologies Llc | Infiltration/inflow control for membrane bioreactor |
US9764288B2 (en) | 2007-04-04 | 2017-09-19 | Evoqua Water Technologies Llc | Membrane module protection |
US9206057B2 (en) | 2007-05-29 | 2015-12-08 | Evoqua Water Technologies Llc | Membrane cleaning with pulsed airlift pump |
US10507431B2 (en) | 2007-05-29 | 2019-12-17 | Evoqua Water Technologies Llc | Membrane cleaning with pulsed airlift pump |
US8840783B2 (en) | 2007-05-29 | 2014-09-23 | Evoqua Water Technologies Llc | Water treatment membrane cleaning with pulsed airlift pump |
US8622222B2 (en) | 2007-05-29 | 2014-01-07 | Siemens Water Technologies Llc | Membrane cleaning with pulsed airlift pump |
US9573824B2 (en) | 2007-05-29 | 2017-02-21 | Evoqua Water Technologies Llc | Membrane cleaning with pulsed airlift pump |
US9023206B2 (en) * | 2008-07-24 | 2015-05-05 | Evoqua Water Technologies Llc | Frame system for membrane filtration modules |
EP2331242A4 (en) * | 2008-07-24 | 2012-09-12 | Siemens Industry Inc | Frame system for membrane filtration modules |
US8382981B2 (en) | 2008-07-24 | 2013-02-26 | Siemens Industry, Inc. | Frame system for membrane filtration modules |
EP2331242A1 (en) * | 2008-07-24 | 2011-06-15 | Siemens Industry, Inc. | Frame system for membrane filtration modules |
US20130186817A1 (en) * | 2008-07-24 | 2013-07-25 | Siemens Industry, Inc. | Frame system for membrane filtration modules |
US8956464B2 (en) | 2009-06-11 | 2015-02-17 | Evoqua Water Technologies Llc | Method of cleaning membranes |
US10441920B2 (en) | 2010-04-30 | 2019-10-15 | Evoqua Water Technologies Llc | Fluid flow distribution device |
US9914097B2 (en) | 2010-04-30 | 2018-03-13 | Evoqua Water Technologies Llc | Fluid flow distribution device |
US9630147B2 (en) | 2010-09-24 | 2017-04-25 | Evoqua Water Technologies Llc | Fluid control manifold for membrane filtration system |
US9022224B2 (en) | 2010-09-24 | 2015-05-05 | Evoqua Water Technologies Llc | Fluid control manifold for membrane filtration system |
US10391432B2 (en) | 2011-09-30 | 2019-08-27 | Evoqua Water Technologies Llc | Manifold arrangement |
US11065569B2 (en) | 2011-09-30 | 2021-07-20 | Rohm And Haas Electronic Materials Singapore Pte. Ltd. | Manifold arrangement |
US9604166B2 (en) | 2011-09-30 | 2017-03-28 | Evoqua Water Technologies Llc | Manifold arrangement |
US9925499B2 (en) | 2011-09-30 | 2018-03-27 | Evoqua Water Technologies Llc | Isolation valve with seal for end cap of a filtration system |
WO2013113833A1 (en) * | 2012-02-03 | 2013-08-08 | Intewa Gmbh | Filter station |
US9533261B2 (en) | 2012-06-28 | 2017-01-03 | Evoqua Water Technologies Llc | Potting method |
US9962865B2 (en) | 2012-09-26 | 2018-05-08 | Evoqua Water Technologies Llc | Membrane potting methods |
US9764289B2 (en) | 2012-09-26 | 2017-09-19 | Evoqua Water Technologies Llc | Membrane securement device |
US9815027B2 (en) | 2012-09-27 | 2017-11-14 | Evoqua Water Technologies Llc | Gas scouring apparatus for immersed membranes |
US10427102B2 (en) | 2013-10-02 | 2019-10-01 | Evoqua Water Technologies Llc | Method and device for repairing a membrane filtration module |
US11173453B2 (en) | 2013-10-02 | 2021-11-16 | Rohm And Haas Electronic Materials Singapores | Method and device for repairing a membrane filtration module |
US10322375B2 (en) | 2015-07-14 | 2019-06-18 | Evoqua Water Technologies Llc | Aeration device for filtration system |
Also Published As
Publication number | Publication date |
---|---|
NO20053769D0 (en) | 2005-08-08 |
NO20053769L (en) | 2006-02-21 |
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