DE2939169A1 - Prodn. of methane from agricultural waste - using two stage process with initial acid stage followed by alkaline fermentation - Google Patents
Prodn. of methane from agricultural waste - using two stage process with initial acid stage followed by alkaline fermentationInfo
- Publication number
- DE2939169A1 DE2939169A1 DE19792939169 DE2939169A DE2939169A1 DE 2939169 A1 DE2939169 A1 DE 2939169A1 DE 19792939169 DE19792939169 DE 19792939169 DE 2939169 A DE2939169 A DE 2939169A DE 2939169 A1 DE2939169 A1 DE 2939169A1
- Authority
- DE
- Germany
- Prior art keywords
- digester
- biomass
- acid reactor
- manure
- stage
- 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.)
- Ceased
Links
- 239000002253 acid Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 13
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title description 7
- 239000002154 agricultural waste Substances 0.000 title 1
- 238000000855 fermentation Methods 0.000 title 1
- 230000004151 fermentation Effects 0.000 title 1
- 239000002028 Biomass Substances 0.000 claims abstract description 16
- 210000003608 fece Anatomy 0.000 claims abstract description 12
- 239000010871 livestock manure Substances 0.000 claims abstract description 12
- 230000007935 neutral effect Effects 0.000 claims abstract description 4
- 239000010822 slaughterhouse waste Substances 0.000 claims abstract description 3
- 238000010438 heat treatment Methods 0.000 claims description 4
- 230000015556 catabolic process Effects 0.000 claims description 3
- 238000006731 degradation reaction Methods 0.000 claims description 3
- 230000029087 digestion Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 230000020477 pH reduction Effects 0.000 claims description 2
- 238000009795 derivation Methods 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 7
- 230000002378 acidificating effect Effects 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241001148470 aerobic bacillus Species 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000029553 photosynthesis Effects 0.000 description 1
- 238000010672 photosynthesis Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C02F3/28—Anaerobic digestion processes
- C02F3/286—Anaerobic digestion processes including two or more steps
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/34—Internal compartments or partitions
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/12—Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
- C12M41/18—Heat exchange systems, e.g. heat jackets or outer envelopes
- C12M41/24—Heat exchange systems, e.g. heat jackets or outer envelopes inside the vessel
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
-
- 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
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Zoology (AREA)
- Wood Science & Technology (AREA)
- Microbiology (AREA)
- Genetics & Genomics (AREA)
- Biochemistry (AREA)
- Sustainable Development (AREA)
- Biotechnology (AREA)
- Biomedical Technology (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- General Chemical & Material Sciences (AREA)
- Thermal Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Clinical Laboratory Science (AREA)
- Fertilizers (AREA)
- Treatment Of Sludge (AREA)
Abstract
Description
Verfahren und Vorrichtung zur Verarbeitung einer Biomasse zu Biogas. Method and device for processing a biomass into biogas.
Die Erfindung betrifft ein Verfahren zur Verarbeitung einer Biomasse wie Gülle, Kot oder Schlachtereiabfälle durch anaeroben Abbau in einem alkalischen Medium zu Biogas und eine Vorrichtung zur Durchführung des Verfahrens.The invention relates to a method for processing a biomass such as manure, excrement or slaughterhouse waste through anaerobic degradation in an alkaline Medium for biogas and a device for carrying out the process.
Der Kreislauf des Kohlenstoffs in der Natur ist im wesentlichen gekennzeichnet durch Fixierung des in der Luft enthaltenen Kohlenstoffdioxyds in Form von organischen Verbindungen, die in der Pflanze bei der Photosynthese gebildet werden. Der größte Teil der erzeugten Biomasse zerfällt in der Rtickreaktion an der Luft meist mit Hilfe aerober Bakterien wieder in Kohlenstoffdioxyd und Wasser. Unter anaeroben Bedingungen und im neutralen bis schwach alkalischen pH-Bereich ist es jedoch möglich, den Abbau so zu steuern, daß das entstehende Gas tiberwiegend zu 2/3 aus Methan und zu 1/3 aus CO2 besteht. Daneben werden noch geringe Mengen von H2S und NH3 gebildet. Der Rückstand findet dann Verwendung als hochwertiger Dünger.The cycle of carbon in nature is essentially characterized by fixing the carbon dioxide contained in the air in the form of organic ones Compounds that are formed in the plant during photosynthesis. The biggest Part of the generated biomass usually decays in the reverse reaction in the air Help aerobic bacteria turn back into carbon dioxide and water. Under anaerobic Conditions and in the neutral to weakly alkaline pH range, however, it is possible to control the degradation in such a way that 2/3 of the gas produced consists mainly of methane and 1/3 consists of CO2. In addition, small amounts of H2S and NH3 are formed. The residue is then used as a high-quality fertilizer.
Die bekannten Anlagen zur Biogasbildung sind entweder in der Anschaffung für den Einsatz in der Landwirtschaft zu teuer oder sie leisten nicht genug, so daß sie insgesamt zu unrentabel sind.The known plants for biogas generation are either being purchased too expensive for use in agriculture or them Afford not enough that they are altogether too unprofitable.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren der eingangs genannten Gattung zu schaffen, das einerseits für die Landwirtschaft rentabel einsetzbar ist und mit dem andererseits gute Ausbeuten erzielt werden können.The invention is based on the object of a method of the above to create named genus, which can be used profitably for agriculture on the one hand and with which, on the other hand, good yields can be achieved.
Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß die Biomasse vor der Behandlung im neutralen bis leicht alkalischen Medium einer Säuerung unterworfen wird.According to the invention this object is achieved in that the biomass subjected to acidification in a neutral to slightly alkaline medium before treatment will.
Das erfindungsgemäße Verfahren zeichnet sich vorteilhaft dadurch aus, daßSlnsbesondere auch in einem landwirtschaftlichen Betrieb rentabel einsetzbar ist.The method according to the invention is advantageously characterized in that that it can also be used profitably in an agricultural operation is.
Eine weitere Aufgabe besteht darin, einen Faulbehälter mit Zu- und Ableitungen für die Biomasse sowie eine Ableitung für das entstandene Biogas zu schaffen, mit dem das erfindungsgemäße Verfahren mit einem Minimum an aufzuwendender Energie durchführbar ist.Another task is a digester with inlet and Discharges for the biomass as well as a discharge for the resulting biogas create, with which the inventive method with a minimum of expenditures Energy is feasible.
Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß in dem Faulbehälter ein Säurereaktor angeordnet ist.According to the invention this object is achieved in that in the digester an acid reactor is arranged.
Hierdurch ist es möglich, die in dem Säurereaktor eingeführte Biomasse besonders rationell auf die erforderliche Reakttnstemperatur zu erhitzen, da die bei der Methanbildung freigesetzte Reaktionswärme zur Erwärmung mit verwendet werden kann.This makes it possible to use the biomass introduced into the acid reactor particularly efficient to heat to the required reaction temperature, since the The heat of reaction released during methane formation can also be used for heating can.
Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen sowie in der nachfolgenden Beschreibung näher gekennzeichnet.Advantageous refinements of the invention are set out in the subclaims as well as in the following description.
Die Erfindung wird anhand des Beispieles der Zeichnung näher erlautet.The invention is explained in more detail using the example of the drawing.
Gülle mit einem Feststoffgehalt von bis zu 12 % wird aus einem Vorlagerbehälter von unten durch ein Rohr2in einem im Innern eines Faulbehälters 3 angeordneten Säurereaktor 1 gepumpt. Der Säurereaktor 1 ist vorteilhaft so dimensioniert, daß die täglich eingepumpte Güllemenge sich drei Tage in ihm befindet und anschließend in den umgebenen Faulbehälter3abgegeben wird.Während dieser Zeit wird die Gülle mittels in dem Faulbehälter 3 angeordnet: Heizschlangen sowie der den Säurereaktor 1 umgebeliien Gülle auf die erforderliche Reaktionstemperatur gebracht.Slurry with a solids content of up to 12% is taken from a storage tank from below through a pipe 2 in an acid reactor arranged inside a digester 3 1 pumped. The acid reactor 1 is advantageously dimensioned so that the daily The amount of manure pumped in is in it for three days and then in the surrounding area Digestion tank3 is released. During this time, the manure is by means of in the digester 3 arranged: heating coils and the liquid manure surrounding the acid reactor 1 brought the required reaction temperature.
Im Säurereaktor 1 wird die Gülle in den Zustand versetzt, in dem die Biogasproduktion voll anläuft, wobei eichzeitig eine teilweise Zersetzung der organischen Stoffe erfolgt. Der pH-Wert der Gülle, der von Haus aus zwischen 7,5 und 8,5 liegt , wird innerhalb des ersten Tages im Säurereaktor durch die Erwärmung und die erste Verarbeitung bis auf einen pH-Wert 5 gesenkt. Durch die im Faulbehälter 3 ablaufende Reaktion wird der pH-Wert nachfolgend auf 6,9 - 7,1 angehoben.In the acid reactor 1, the manure is put into the state in which the Biogas production starts fully, with a partial decomposition of the organic Substances takes place. The pH of the manure, which is naturally between 7.5 and 8.5 , is heated within the first day in the acid reactor and the first Processing reduced to a pH value of 5. By running in the digester 3 In the reaction, the pH is subsequently raised to 6.9-7.1.
Im Faulbehälter 3 wird bei Temperaturen zwischen 370 bis 560 C unter Ausschluß von Sauerstoff die Biomasse in Biogas (2/3 CH4, 1/3 CO2) verwandelt, wobei die Feststoffe vollständig verarbeitet werden. Hierbei ist es zur gleichmäßigen Gaserzeugung wichtig, daß die Temperatur im Innern des Faulbehälters 3 konstant gehalten wird. Dies erfolgt über Heizspiralen und Umwälzpumpen, die mittels Thermostaten geregelt werden.In the digester 3 is at temperatures between 370 to 560 C below Exclusion of oxygen converts the biomass into biogas (2/3 CH4, 1/3 CO2), whereby the solids are fully processed. Here it is for the even Gas generation is important that the temperature inside the digester 3 is constant is held. This takes place via heating coils and circulation pumps, which are operated by means of thermostats be managed.
Bei der Gasproduktion ändert sich das spezifische Gewicht der Biomasse je nach fortschreitendem Verarbeitungsverlauf. Es besteht dabei die Gefahr, daß die leichten Feststoffe sich an der Oberfläche sammeln und sich dort als Schwemmschicht festsetzen.During gas production, the specific weight of the biomass changes depending on the progress of the processing. There is a risk that the light solids collect on the surface and form an alluvial layer fix.
Dies hat zur Folge, daß eine unerwünschte Temperaturerhöhung eintritt, wodurch der Vergasungsprozeß unterbrochen wird.This has the consequence that an undesired increase in temperature occurs, whereby the gasification process is interrupted.
Zur Beseitigung der Schwemmschicht werden die schwereren Biomassenanteile im unteren Teil des Faulbehälters mit Hilfe einer Umwälzpumpe 4 durch ein Rohr 5 und eine Hochdruckdüse 6 auf die sich bildende Schwemmschicht gesprüht und letztere dadurch beseitigt. Dieser Vorgang wird periodisch wiederholt und dadurch die Biogaserzeugung unbehindert fortgesetzt.The heavier biomass fractions are used to remove the alluvial layer in the lower part of the digester with the aid of a circulation pump 4 through a pipe 5 and a high pressure nozzle 6 sprayed onto the evacuating layer and the latter thereby eliminated. This process is repeated periodically and thereby the production of biogas continued unhindered.
Das gebildete Biogas wird im oberen Teil des Faulbehälters 3 über geeignete Ventilanordnungen einem Gasverbraucher zugeführt. Die entgaste Gülle sammelt sich auf Grund ihres spezifischen Gewichtes im unteren Drittel des Baulbehälters 3 und wird dort durch den Überdruck, der durch das Einpumpen der frischen Gülle in den Säurereaktor 1 in dem Faulbehälter 3 entsteht, über ein Ablaufrohr 7 einem Lagerbehälter zugeführt und findet Verwendung als hochwertiger Dünger.The biogas formed is in the upper part of the digester 3 over suitable valve arrangements supplied to a gas consumer. The degassed manure collects due to their specific weight in the lower third of the building container 3 and is there due to the overpressure caused by pumping in the fresh manure arises in the acid reactor 1 in the digester 3, via a drain pipe 7 a Storage container and is used as a high-quality fertilizer.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19792939169 DE2939169A1 (en) | 1979-09-27 | 1979-09-27 | Prodn. of methane from agricultural waste - using two stage process with initial acid stage followed by alkaline fermentation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19792939169 DE2939169A1 (en) | 1979-09-27 | 1979-09-27 | Prodn. of methane from agricultural waste - using two stage process with initial acid stage followed by alkaline fermentation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2939169A1 true DE2939169A1 (en) | 1981-04-16 |
Family
ID=6082021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19792939169 Ceased DE2939169A1 (en) | 1979-09-27 | 1979-09-27 | Prodn. of methane from agricultural waste - using two stage process with initial acid stage followed by alkaline fermentation |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE2939169A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2543129A1 (en) * | 1983-03-24 | 1984-09-28 | Bertin & Cie | IMPROVEMENTS IN FACILITIES AND METHODS OF BIOLOGICAL PURIFICATION AND PREPARATION OF COMBUSTIBLE GASES BY ANAEROBIC FERMENTATION IN TWO PHASES |
| EP0299369A2 (en) * | 1987-07-17 | 1989-01-18 | Henkel Kommanditgesellschaft auf Aktien | Decentralized clarification process |
| DE3843789A1 (en) * | 1987-12-24 | 1989-07-13 | Langer Bsa Maschf | Process and apparatus for treating organic waste products made of solids and liquids, in particular slurry (liquid manure) |
| DE3835468C1 (en) * | 1988-10-18 | 1990-01-25 | Gemabau Gesellschaft Fuer Maschinenanlagen Mbh, 2371 Borgstedt, De | Process and apparatus for liquid manure treatment |
| DE4233873A1 (en) * | 1992-10-08 | 1994-04-14 | Gemabau Ges Fuer Maschinenanla | Manure and sewage processing - by storing matter for set period before heating in a reaction container followed by sepg. into fluid and solid matter |
| DE20219144U1 (en) | 2002-12-10 | 2003-04-10 | Brachthäuser, Benno, Dr., 59174 Kamen | Two stage bioreactor for treatment of slurry, comprises a prereactor for acid formation mounted inside the main reactor in which methane is formed, and an S-shaped siphon at the base of the prereactor feeding biomass into the main tank |
| DE202011106472U1 (en) * | 2011-09-29 | 2013-01-08 | 4Biogas Gmbh & Co. Kg | Biogas reactor with a reactor vessel |
-
1979
- 1979-09-27 DE DE19792939169 patent/DE2939169A1/en not_active Ceased
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2543129A1 (en) * | 1983-03-24 | 1984-09-28 | Bertin & Cie | IMPROVEMENTS IN FACILITIES AND METHODS OF BIOLOGICAL PURIFICATION AND PREPARATION OF COMBUSTIBLE GASES BY ANAEROBIC FERMENTATION IN TWO PHASES |
| EP0120772A1 (en) * | 1983-03-24 | 1984-10-03 | Bertin & Cie | Installations and processes for the biological purification and production of combustible gases by anaerobic two-phase fermentation |
| EP0299369A2 (en) * | 1987-07-17 | 1989-01-18 | Henkel Kommanditgesellschaft auf Aktien | Decentralized clarification process |
| US4940544A (en) * | 1987-07-17 | 1990-07-10 | Henkel Kommanditgesellschaft Auf Aktien | Decentral wastewater treatment process |
| EP0299369A3 (en) * | 1987-07-17 | 1991-06-19 | Henkel Kommanditgesellschaft auf Aktien | Decentralized clarification process |
| DE3843789A1 (en) * | 1987-12-24 | 1989-07-13 | Langer Bsa Maschf | Process and apparatus for treating organic waste products made of solids and liquids, in particular slurry (liquid manure) |
| DE3835468C1 (en) * | 1988-10-18 | 1990-01-25 | Gemabau Gesellschaft Fuer Maschinenanlagen Mbh, 2371 Borgstedt, De | Process and apparatus for liquid manure treatment |
| DE4233873A1 (en) * | 1992-10-08 | 1994-04-14 | Gemabau Ges Fuer Maschinenanla | Manure and sewage processing - by storing matter for set period before heating in a reaction container followed by sepg. into fluid and solid matter |
| DE20219144U1 (en) | 2002-12-10 | 2003-04-10 | Brachthäuser, Benno, Dr., 59174 Kamen | Two stage bioreactor for treatment of slurry, comprises a prereactor for acid formation mounted inside the main reactor in which methane is formed, and an S-shaped siphon at the base of the prereactor feeding biomass into the main tank |
| DE202011106472U1 (en) * | 2011-09-29 | 2013-01-08 | 4Biogas Gmbh & Co. Kg | Biogas reactor with a reactor vessel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| 8125 | Change of the main classification |
Ipc: C12P 1/00 |
|
| 8126 | Change of the secondary classification |
Free format text: C12P 5/02 C02F 3/28 C05F 3/06 C07C 9/04 C02F 11/04 |
|
| 8125 | Change of the main classification |
Ipc: C02F 11/04 |
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| 8126 | Change of the secondary classification |
Ipc: ENTFAELLT |
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| 8131 | Rejection |