DE3705837C1 - Process for microbiological exhaust gas purification - Google Patents
Process for microbiological exhaust gas purificationInfo
- Publication number
- DE3705837C1 DE3705837C1 DE19873705837 DE3705837A DE3705837C1 DE 3705837 C1 DE3705837 C1 DE 3705837C1 DE 19873705837 DE19873705837 DE 19873705837 DE 3705837 A DE3705837 A DE 3705837A DE 3705837 C1 DE3705837 C1 DE 3705837C1
- Authority
- DE
- Germany
- Prior art keywords
- exhaust gas
- microbiological
- gas purification
- microorganisms
- exhaust gases
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/84—Biological processes
- B01D53/85—Biological processes with gas-solid contact
-
- 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
- C02F3/025—Biological purification using sources of oxygen other than air, oxygen or ozone
-
- 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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- 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
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Molecular Biology (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur mikrobiologischen Abgasreinigung.The invention relates to a method for microbiological Exhaust gas cleaning.
Mit dem Verfahren wird es möglich, die Schadstoffkonzentration von mit organischen oder anorganischen, gasförmigen oder gelösten Substanzen belastete Luft zu vermindern bzw. vollständig abzubauen. Die Erfindung ist in Industriebetrieben und Institutionen anwendbar, wo im Arbeits- bzw. Produktionsprozeß Schadstoffe in die Umgebungsluft gelangen und beseitigt werden müsen.The process makes it possible to determine the pollutant concentration of with organic or inorganic, gaseous or dissolved substances reduce or completely dismantle. The invention is applicable in industrial companies and institutions where Work or production process pollutants in the Ambient air must get in and be removed.
Es ist bekannt, daß die ersten Biofiltersysteme in den Jahren nach 1950 in der Literatur auftauchten. (Pommeroy 1957, Dupont 1964). Sie beruhten auf dem Wirkprinzip der Schadstoffbescheidung aus Abgas über eine Kompostschicht. Das Abgas durchströmt diese Schicht und wird teils absorbiert und teils metabolisiert. Eine undefinierte Mikroorganismenflora und schlechte Steuer- und Regelbarkeit sind die wesentlichen Nachteile dieser Systeme.It is known that the first biofilter systems in the Years after 1950 appeared in literature. (Pommeroy 1957, Dupont 1964). They were based on the principle of action of Pollutant removal from exhaust gas via a compost layer. The exhaust gas flows through this layer and is partly absorbed and partly metabolized. An undefined Microorganism flora and poor control and Controllability are the main disadvantages of this Systems.
In der Folgezeit unterschied man reine Biofilter und Biowäscher, die als Weiterentwicklung der ersten Biofilter anzusehen sind. Subsequently, a distinction was made between pure biofilters and Bio washer, which is a further development of the first bio filter are to be seen.
Diese Systeme haben den Nachteil einer vergleichsweisen hohen Stoffübergangshemmung durch eine zu geringe spezifische aktive Oberfläche der Mikroorganismen. Dieser verminderte spezifische Stoffaustausch führt zwangsläufig zu einer Vergrößerung der apparativen Auslegen von Filteranlagen und damit zu ungünstigen wirtschaftlichen Effekten. Teilweise versucht man dieses Problem durch die Nutzung von Rieselsäulen zu umgehen. Die Mikroorganismen sind dabei an inerten Trägern immobilisiert. Durch die damit verbundenen hohen a w -Werte entstehen jedoch Wasserfilme um die Mikroorganismen, die als Diffusionsbarriere wirken.These systems have the disadvantage of a comparatively high mass transfer inhibition due to a too small specific active surface of the microorganisms. This reduced specific mass transfer inevitably leads to an increase in the apparatus design of filter systems and thus to unfavorable economic effects. Partly one tries to avoid this problem by using trickle columns. The microorganisms are immobilized on inert carriers. The associated high a w values, however, create water films around the microorganisms, which act as a diffusion barrier.
Diese Nachteile waren der Grund dafür, daß man sich auch in jüngerer Vergangenheit wieder mit den Möglichkeiten der Verbesserung der Kompostfilter beschäftigte.These disadvantages were the reason that one was also in recent past again with the opportunities for improvement the compost filter was busy.
Wenn hierbei auch eine deutliche Verbesserung vor allem der möglichen Durchsatzmengen erreicht wurde, bleibt doch der wesentliche Nachteil der teilweise heterogenen Verteilung der Mikroorganismen und der komplizierten Einstellung bzw. Regelung des a w -Wertes vor allem im Mikrobereich.Even though a significant improvement, above all in the possible throughput quantities, has been achieved, the main disadvantage of the partially heterogeneous distribution of the microorganisms and the complicated adjustment or regulation of the a w value, especially in the micro range, remains.
Damit stellt sich die Aufgabe, ein Verfahren zu schaffen, bei dem der a w -Wert eingestellt werden kann und Stoffübergangsnachteile der beschriebenen Verfahren beseitigt werden.The task thus arises to create a process in which the a w value can be set and mass transfer disadvantages of the processes described are eliminated.
Erfindungsgemäß wird die Aufgabe durch die Maßnahmen nach Anspruch 1 gelöst. Vorteilhafte Ausgestaltungen sind in den Unteransprüchen gekennzeichnet.According to the invention, the task is performed by the measures Claim 1 solved. Advantageous configurations are shown in marked the subclaims.
Anwendungsbeispiel:
In einem Wirbelschichtfermenter mit den Abmessungen 20 cm
Durchmesser und 100 cm Höhe werden 3 kg der Hefe Kluyveromyces
fragilis in pelletierter Form (Größe ca. 1 mm mal
2 bis 4 mm) mit einem Feuchtigkeitsgehalt von 60 Gew. %
gegeben. Ein Abgas mit einem Ethanolschadstoffgehalt von
300 mg Kohlenstoff m⁻³ wird mit einem Volumenstrom von
150 m³ h⁻¹ durch den Reaktor geleitet, so daß die Hefepartikel
fluidisiert werden. Die a w -Wert-Regelung erfolgt
über eine Düse auf einen Wert von 0.92...0.95 und gleichzeitiger
Nährstoffzuführung mit einer Zusammensetzung von
5% Hefeextrakt und 0.5 bis 1% Ammoniumsulfat. Dabei kommt
es zur Metabolisierung von Ethanol, so daß eine Gasaustrittskonzentration
von Ethanol von 90 mg m⁻³ bezogen auf
Kohlenstoff erreicht wird.Example of use:
3 kg of the yeast Kluyveromyces fragilis in pelleted form (size approx. 1 mm by 2 to 4 mm) with a moisture content of 60% by weight are placed in a fluidized bed fermenter with the dimensions 20 cm diameter and 100 cm height. An exhaust gas with an ethanol pollutant content of 300 mg carbon m⁻³ is passed through the reactor with a volume flow of 150 m³ h⁻¹, so that the yeast particles are fluidized. The a w value control is carried out via a nozzle to a value of 0.92 ... 0.95 and at the same time supplying nutrients with a composition of 5% yeast extract and 0.5 to 1% ammonium sulfate. This leads to the metabolism of ethanol, so that a gas outlet concentration of ethanol of 90 mg m³ is achieved based on carbon.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19873705837 DE3705837C1 (en) | 1987-02-24 | 1987-02-24 | Process for microbiological exhaust gas purification |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19873705837 DE3705837C1 (en) | 1987-02-24 | 1987-02-24 | Process for microbiological exhaust gas purification |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3705837C1 true DE3705837C1 (en) | 1988-06-30 |
Family
ID=6321624
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19873705837 Expired DE3705837C1 (en) | 1987-02-24 | 1987-02-24 | Process for microbiological exhaust gas purification |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3705837C1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4204190A1 (en) * | 1991-02-08 | 1992-08-13 | Herbst Umwelttech Gmbh | Procedure and device for biological cleaning of gases |
DE4127267A1 (en) * | 1991-08-17 | 1993-02-18 | Degussa | METHOD FOR BIOLOGICAL EXHAUST AIR PURIFICATION |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3326057A1 (en) * | 1983-07-20 | 1985-01-31 | Bayer Ag, 5090 Leverkusen | METHOD FOR BIOLOGICAL EXHAUST AIR PURIFICATION |
-
1987
- 1987-02-24 DE DE19873705837 patent/DE3705837C1/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3326057A1 (en) * | 1983-07-20 | 1985-01-31 | Bayer Ag, 5090 Leverkusen | METHOD FOR BIOLOGICAL EXHAUST AIR PURIFICATION |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4204190A1 (en) * | 1991-02-08 | 1992-08-13 | Herbst Umwelttech Gmbh | Procedure and device for biological cleaning of gases |
DE4127267A1 (en) * | 1991-08-17 | 1993-02-18 | Degussa | METHOD FOR BIOLOGICAL EXHAUST AIR PURIFICATION |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8100 | Publication of the examined application without publication of unexamined application | ||
D1 | Grant (no unexamined application published) patent law 81 | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |