DE102009036971A1 - Sandwich carrier material useful as a growth surface for a biofilm in a liquid, comprises plastic bodies in the form of flat and/or bent plates and/or hyperbolic paraboloid with a porous surface - Google Patents
Sandwich carrier material useful as a growth surface for a biofilm in a liquid, comprises plastic bodies in the form of flat and/or bent plates and/or hyperbolic paraboloid with a porous surface Download PDFInfo
- Publication number
- DE102009036971A1 DE102009036971A1 DE102009036971A DE102009036971A DE102009036971A1 DE 102009036971 A1 DE102009036971 A1 DE 102009036971A1 DE 102009036971 A DE102009036971 A DE 102009036971A DE 102009036971 A DE102009036971 A DE 102009036971A DE 102009036971 A1 DE102009036971 A1 DE 102009036971A1
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- carrier material
- sandwich
- carrier
- flat
- biofilm
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N11/00—Carrier-bound or immobilised enzymes; Carrier-bound or immobilised microbial cells; Preparation thereof
- C12N11/02—Enzymes or microbial cells immobilised on or in an organic carrier
- C12N11/08—Enzymes or microbial cells immobilised on or in an organic carrier the carrier being a synthetic polymer
- C12N11/082—Enzymes or microbial cells immobilised on or in an organic carrier the carrier being a synthetic polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Genetics & Genomics (AREA)
- Chemical & Material Sciences (AREA)
- Wood Science & Technology (AREA)
- Biomedical Technology (AREA)
- Microbiology (AREA)
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- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Biotechnology (AREA)
- Laminated Bodies (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
Description
Die Erfindung betrifft ein Sandwich-Trägermedium zur Immobilisierung von Biofilmen in einer Flüssigkeit, beispielsweise einem Wasser oder Abwasser, mit einer Vielzahl von Trägerelementen mit einer porösen Oberfläche wobei das Trägermaterial zur Einstellung der Dichte und zum mechanischen Schutz gegen Abrieb aus mindestens zwei Schichten mit unterschiedlicher Dichte besteht.The The invention relates to a sandwich carrier medium for immobilization of biofilms in a liquid, such as a Water or wastewater, with a variety of support elements with a porous surface wherein the carrier material for Density adjustment and mechanical protection against abrasion consists of at least two layers of different density.
Aus
der
In
dem Patent
Aufgrund dieses oder ähnlicher Herstellungsverfahren dieses Trägermaterialtyps wird zwangsläufig ein Gasvolumen in der Matrix eingeschlossen. Die resultierende Dichte des Tägermaterials ist deshalb deutlich geringer als 1. Wird PE oder PP als Hauptbestandteil verwendet resultiert, je nach Gasanteil, eine Dichte von ca. 0,2 bis 0,5 g/cm3. Ein solches Trägermaterial ist nicht oder nur mit erheblichem Energieaufwand in ein (Ab)Wasser einmischbar.Due to this or similar production process of this type of carrier material, a gas volume is inevitably trapped in the matrix. The resulting density of the Tägermaterials is therefore significantly less than 1. If PE or PP used as the main component results, depending on the gas content, a density of about 0.2 to 0.5 g / cm 3 . Such a carrier material is not or only with considerable expenditure of energy in a (Ab) water einmischbar.
Für viele Anwendungen in der Wasser- und Abwassertechnik (z. B. Denitrifikation, Nitrifikation, schwachbelüftete CSB-Stufen, Anaerobstufen) ist ein derartiges Trägermaterial deshalb ungeeignet.For many applications in water and wastewater technology (eg denitrification, Nitrification, slightly aerated COD stages, anaerobic stages) is such a carrier material therefore unsuitable.
In der Praxis wird versucht die Dichte des Trägermaterials mit Hilfe von Zusätzen bei der Produktion des Kunststoffschaums zu kompensiert bzw. so einzustellen, dass die gewünschte Dichte erreicht wird. Die verwendeten Zusätze beeinflussen jedoch die Ausbildung der Porenstruktur und sind nur bis zu einer kritischen Größe anwendbar. Es ist die Aufgabe der Erfindung ein Sandwich-Trägermaterial der eingangs genannten Art zu schaffen mit Trägerelementen, auf denen sich Biofilme dauerhaft etablieren können, die lange Standzeiten auch in turbulenten aeroben und/oder anaeroben Flüssigkeitsströmen aufweisen und die eine an die Aufgabenstellung optimierte Dichte aufweisen als bisher bekannt und deshalb der notwendige Energieeintrag für die Durchmischung minimiert werden kann.In In practice, the density of the carrier material is attempted with the help of additives in the production of plastic foam to be compensated or adjusted so that the desired Density is achieved. Influencing the additives used However, the formation of the pore structure and are only up to one critical size applicable. It is the job of Invention, a sandwich carrier material of the aforementioned To create kind with carrier elements, on which biofilms can permanently establish the long service life, too in turbulent aerobic and / or anaerobic fluid streams have and optimized for the task density have as previously known and therefore the necessary energy input for mixing can be minimized.
Diese Eigenschaften des Trägermaterials werden dadurch erreicht, dass um einen geschäumten Kern mindestens eine Aussenhülle aus einer Mischung von Kunststoff und Füllmaterial koextrudiert wird. Durch die verwendete Rezeptur aus Kunststoff und Füllmaterial, beispielsweise PE und/oder PP mit BaSO4 und/oder Kreide und/oder anderen geeigneten Nanopartikeln und der Dicke des koextrudierten Aussenmantels kann die Dichte des Sandwich-Trägers eingestellt werden. Gleichzeitig dient der koextrudierte Aussenmantel um den Schaumkern als Schutzring um die Schaumscheibe und verhindert bzw. vermindert weitgehend die mechanische Abrasion die beim Einmischen und beim Durchmischen der Scheiben im Reaktionsbehälter auftritt.These Characteristics of the carrier material are achieved by that around a foamed core at least one outer shell is coextruded from a mixture of plastic and filler material. Due to the used plastic and filler formulation, for example, PE and / or PP with BaSO4 and / or chalk and / or other suitable nanoparticles and the thickness of the coextruded outer jacket The density of the sandwich carrier can be adjusted. At the same time, the coextruded outer jacket serves around the foam core as a protective ring around the foam disc and prevents or reduces largely the mechanical abrasion when mixing in and at Mixing the discs in the reaction vessel occurs.
Ein
Ausführungsbeispiel der Erfindung ist in der Zeichnung
1 und 2 dargestellt und wird im Folgenden näher beschrieben.
Die
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - EP 0793622 B1 [0002, 0003] EP 0793622 B1 [0002, 0003]
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009036971A DE102009036971A1 (en) | 2009-08-12 | 2009-08-12 | Sandwich carrier material useful as a growth surface for a biofilm in a liquid, comprises plastic bodies in the form of flat and/or bent plates and/or hyperbolic paraboloid with a porous surface |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009036971A DE102009036971A1 (en) | 2009-08-12 | 2009-08-12 | Sandwich carrier material useful as a growth surface for a biofilm in a liquid, comprises plastic bodies in the form of flat and/or bent plates and/or hyperbolic paraboloid with a porous surface |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102009036971A1 true DE102009036971A1 (en) | 2011-02-17 |
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ID=43448207
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102009036971A Ceased DE102009036971A1 (en) | 2009-08-12 | 2009-08-12 | Sandwich carrier material useful as a growth surface for a biofilm in a liquid, comprises plastic bodies in the form of flat and/or bent plates and/or hyperbolic paraboloid with a porous surface |
Country Status (1)
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DE (1) | DE102009036971A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018103116A1 (en) | 2018-02-13 | 2018-03-29 | Christian Stöhr GmbH & Co. Elektro- und Kunststoffwaren KG | Filling and / or vegetation body |
DE102021133020A1 (en) | 2021-12-14 | 2023-06-15 | dsf Danz Special Foams GmbH | Growth bodies for microorganisms in biological sewage treatment plants and method for their production |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0793622B1 (en) | 1994-10-04 | 2003-06-25 | Björn Pedersen | A carrier medium to retain a biofilm for cleaning waste water and a process for the production of this carrier medium |
DE102006019446A1 (en) * | 2006-04-24 | 2007-10-25 | Multi Umwelttechnologie Ag | Carrier material as growth surface for immobilizing biofilm containing microorganisms in wastewater for biological treatment of wastewater, includes disk-, ring- or unsymmetrical calotte shaped hollow plastic bodies with rough surface |
-
2009
- 2009-08-12 DE DE102009036971A patent/DE102009036971A1/en not_active Ceased
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0793622B1 (en) | 1994-10-04 | 2003-06-25 | Björn Pedersen | A carrier medium to retain a biofilm for cleaning waste water and a process for the production of this carrier medium |
DE102006019446A1 (en) * | 2006-04-24 | 2007-10-25 | Multi Umwelttechnologie Ag | Carrier material as growth surface for immobilizing biofilm containing microorganisms in wastewater for biological treatment of wastewater, includes disk-, ring- or unsymmetrical calotte shaped hollow plastic bodies with rough surface |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018103116A1 (en) | 2018-02-13 | 2018-03-29 | Christian Stöhr GmbH & Co. Elektro- und Kunststoffwaren KG | Filling and / or vegetation body |
EP3524345A1 (en) | 2018-02-13 | 2019-08-14 | Christian Stöhr GmbH & Co. Elektro- und Kunststoffwaren KG | Filling and/or cultivation body |
DE102021133020A1 (en) | 2021-12-14 | 2023-06-15 | dsf Danz Special Foams GmbH | Growth bodies for microorganisms in biological sewage treatment plants and method for their production |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
R002 | Refusal decision in examination/registration proceedings | ||
R003 | Refusal decision now final |
Effective date: 20111220 |