FI108349B - Ett f÷rfarande vid fermentation av ett substrat medelst lufttillsats samt en anordning f÷r inblanding av luft i substratet - Google Patents

Ett f÷rfarande vid fermentation av ett substrat medelst lufttillsats samt en anordning f÷r inblanding av luft i substratet Download PDF

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Publication number
FI108349B
FI108349B FI935876A FI935876A FI108349B FI 108349 B FI108349 B FI 108349B FI 935876 A FI935876 A FI 935876A FI 935876 A FI935876 A FI 935876A FI 108349 B FI108349 B FI 108349B
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Finland
Prior art keywords
foam
substrate
air
fermentation
liquid
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FI935876A
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English (en)
Finnish (fi)
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FI935876A0 (fi
FI935876A (fi
Inventor
Odd Jarle Skjelhaugen
Trond Saether
Magnus Lidman
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Alfa Laval Agri Int
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Publication of FI935876A0 publication Critical patent/FI935876A0/fi
Publication of FI935876A publication Critical patent/FI935876A/fi
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Publication of FI108349B publication Critical patent/FI108349B/sv

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    • 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
    • C02F3/1278—Provisions for mixing or aeration of the mixed liquor
    • C02F3/1284—Mixing devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • B01F23/23311—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements through a hollow stirrer axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • B01F23/23314—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements through a hollow stirrer element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/235—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids for making foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/27—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices
    • B01F27/271—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed radially between the surfaces of the rotor and the stator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/27—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices
    • B01F27/271—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed radially between the surfaces of the rotor and the stator
    • B01F27/2714—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed radially between the surfaces of the rotor and the stator the relative position of the stator and the rotor, gap in between or gap with the walls being adjustable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/81—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis the stirrers having central axial inflow and substantially radial outflow
    • B01F27/812—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis the stirrers having central axial inflow and substantially radial outflow the stirrers co-operating with surrounding stators, or with intermeshing stators, e.g. comprising slits, orifices or screens
    • 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
    • C02F3/20—Activated sludge processes using diffusers
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F3/00—Fertilisers from human or animal excrements, e.g. manure
    • 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
    • C12M27/00—Means for mixing, agitating or circulating fluids in the vessel
    • C12M27/02—Stirrer or mobile mixing elements
    • C12M27/04—Stirrer or mobile mixing elements with introduction of gas through the stirrer or mixing element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/115—Stirrers characterised by the configuration of the stirrers comprising discs or disc-like elements essentially perpendicular to the stirrer shaft axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/27—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices
    • B01F27/271—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed radially between the surfaces of the rotor and the stator
    • B01F27/2712—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed radially between the surfaces of the rotor and the stator provided with ribs, ridges or grooves on one surface
    • 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
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/141—Feedstock
    • Y02P20/145—Feedstock the feedstock being materials of biological origin
    • 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)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
  • Wood Science & Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Health & Medical Sciences (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Zoology (AREA)
  • Biomedical Technology (AREA)
  • Sustainable Development (AREA)
  • Biotechnology (AREA)
  • Biochemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Genetics & Genomics (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)
  • Fertilizers (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
  • Treatment Of Sludge (AREA)
  • Distillation Of Fermentation Liquor, Processing Of Alcohols, Vinegar And Beer (AREA)

Claims (6)

1. Förfarande vid fermentering av substrat i en fermenteringstank företrädesvis 5 av högviskösa substrat innefattande kontrollerad inblandning av luft, kännetecknat av att luftinblandningen sker i tva steg, där en liten mängd substrat medels skjuv-krafter blandas med en större mängd luit i det första steget sä att ett skum innehäl-lande luftbläsor med en diameter mellan nägra tiondelars millimeter och nägra millimeter bildas, vilket skum i det andra steget jämnfördelas och inblandas i substratet 10 varvid bade skumbildningen och skummets jänmfördelning i substratet genomförs i en blandningszon närä botten i fermenteringstanken, varigenom luftbubblor erhäl-les, som har en stighastighet som är sä lag att syreutnyttjandegraden i procent av den tillförda syremängden överstiger 20 %.
2. Förfarande enligt patentkrav 1, kännetecknat av att de luftbläsor som erhällits 15 vid skumbildningen fördelas genom hydromekanisk bearbetning i blandningszonen.
3. Förfarande enligt patentkrav 1, kännetecknat av att de luftbläsor som erhällits vid skumbildningens sönderdelas ytterligare genom upprepad äterblandning av skum och substrat
4. Anordning för luftinblandning i ett substrat företrädesvis ett högvisköst sub-20 strat genom förfarandet för fermentering enligt patentkrav 1, kännetecknad av att den omfattar ett rör (1) för lufttillförsel tili ett roterande, skumbildande organ (2) vilket vid användandet är anordnat nedsänkt i substratet närä bottnen i en fermente- » · > ringstank, vilket organ omfattar tvä element (3,4) med konfronterande ytor där ytan hos ätminstone det ena elementet har försänkta och/eller förhöjda partier (5), varvid 25 ytoma är anordnade att vara transversellt rörliga i förhällande tili varandra med ett inbördes avständ motsvarande den önskade vätskelamellens storlek, varvid de mel-lanrum som föreligger i de försänkta partiema i nämnda ätminstone ena element (3) star i förbindelse med lufitledningen (1) och omgivande substrat sä att ett skum in-nehällande luftbläsor med en diameter mellan nägra tiondelars millimeter och nägra ) 30 millimeter bildas mellan elementen (3, 4) och att medel är anordnade för att jämn-fördela det bildade skummet i substratet närä det djup tili vilket det skumbildande organet är nedsänkt i fermenteringstanken. 1 Anordning enligt patentkrav 4, kännetecknad av att det skum bildande organet (2) är utformat för att ocksä fördela det bildade skummet i substratet. 108349 11
6. Anordning enligt patentkrav 5, kännetecknad av att de tvä elementen (3, 4) i det skumbildande organet omfattar en fast skiva (3) och en roterande skiva (4), vilka bäda har en yta med radiella bommar (5), varvid utrymmet mellan skivor-na star i forbindelse med röret (1) för lufttillförsel och hai (6, 7) för tillförsel av sub-5 strat är anordnade i den fasta och/eller i den roterande skivan. • · · V ♦ »
FI935876A 1991-06-28 1993-12-27 Ett f÷rfarande vid fermentation av ett substrat medelst lufttillsats samt en anordning f÷r inblanding av luft i substratet FI108349B (sv)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
SE9102019A SE469073B (sv) 1991-06-28 1991-06-28 Foerfarande vid fermentering av foeretraedesvis hoegviskoesa substrat i en fermenteringstank
SE9102019 1991-06-28
SE9200478 1992-02-18
PCT/SE1992/000478 WO1993000302A1 (en) 1991-06-28 1992-06-26 Method for fermentation of especially highly viscous substrates and means for blending air into the substrate

Publications (3)

Publication Number Publication Date
FI935876A0 FI935876A0 (fi) 1993-12-27
FI935876A FI935876A (fi) 1993-12-27
FI108349B true FI108349B (sv) 2002-01-15

Family

ID=20383195

Family Applications (1)

Application Number Title Priority Date Filing Date
FI935876A FI108349B (sv) 1991-06-28 1993-12-27 Ett f÷rfarande vid fermentation av ett substrat medelst lufttillsats samt en anordning f÷r inblanding av luft i substratet

Country Status (8)

Country Link
EP (1) EP0642471B1 (sv)
DE (1) DE69228428T2 (sv)
DK (1) DK0642471T3 (sv)
FI (1) FI108349B (sv)
NO (1) NO304825B1 (sv)
PL (1) PL170206B1 (sv)
SE (1) SE469073B (sv)
WO (1) WO1993000302A1 (sv)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2678295A1 (en) 2011-02-25 2014-01-01 Telge Nät AB Method and system for sanitization of pathogen containing liquid waste in composting applications

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT327830B (de) * 1973-10-18 1976-02-25 Alfa Laval Stalltech Vorrichtung zur begasung von schaumfahigen flussigkeiten in senk-, dunggruben od.dgl.

Also Published As

Publication number Publication date
NO934827L (no) 1994-02-10
SE469073B (sv) 1993-05-10
EP0642471B1 (en) 1999-02-10
FI935876A0 (fi) 1993-12-27
EP0642471A1 (en) 1995-03-15
FI935876A (fi) 1993-12-27
DE69228428T2 (de) 1999-06-24
SE9102019D0 (sv) 1991-06-28
NO934827D0 (no) 1993-12-27
WO1993000302A1 (en) 1993-01-07
DE69228428D1 (de) 1999-03-25
NO304825B1 (no) 1999-02-22
PL170206B1 (pl) 1996-11-29
SE9102019L (sv) 1992-12-29
DK0642471T3 (da) 1999-09-20

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