DK155715B - APPARATUS FOR MIXING AIR IN A FLUID - Google Patents

APPARATUS FOR MIXING AIR IN A FLUID Download PDF

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Publication number
DK155715B
DK155715B DK369683A DK369683A DK155715B DK 155715 B DK155715 B DK 155715B DK 369683 A DK369683 A DK 369683A DK 369683 A DK369683 A DK 369683A DK 155715 B DK155715 B DK 155715B
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DK
Denmark
Prior art keywords
propeller
venturi nozzle
motor
air
liquid
Prior art date
Application number
DK369683A
Other languages
Danish (da)
Other versions
DK155715C (en
DK369683D0 (en
DK369683A (en
Inventor
Axel Oelgaard
Original Assignee
Landia As
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Landia As filed Critical Landia As
Publication of DK369683D0 publication Critical patent/DK369683D0/en
Priority to DK369683A priority Critical patent/DK155715C/en
Priority to AT0903184A priority patent/AT383966B/en
Priority to EP84903484A priority patent/EP0158653A1/en
Priority to CH2297/85A priority patent/CH665567A5/en
Priority to PCT/DK1984/000090 priority patent/WO1985001452A1/en
Priority to IT8422862A priority patent/IT1213221B/en
Publication of DK369683A publication Critical patent/DK369683A/en
Priority to NO85851944A priority patent/NO160492C/en
Priority to SE8502536A priority patent/SE453464B/en
Publication of DK155715B publication Critical patent/DK155715B/en
Application granted granted Critical
Publication of DK155715C publication Critical patent/DK155715C/en

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Classifications

    • 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
    • B01F23/2332—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements the stirrer rotating about a horizontal axis; Stirrers therefor
    • 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
    • B01F23/2335—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 direction of introduction of the gas relative to the stirrer
    • B01F23/23353—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 direction of introduction of the gas relative to the stirrer the gas being sucked towards the rotating stirrer
    • 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
    • B01F23/2336—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 location of the place of introduction of the gas relative to the stirrer
    • B01F23/23367—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 location of the place of introduction of the gas relative to the stirrer the gas being introduced behind the stirrer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
    • 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
    • B01F27/25—Mixers with both stirrer and drive unit submerged in the material being mixed
    • 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
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2554/00—Input parameters relating to objects
    • B60W2554/40—Dynamic objects, e.g. animals, windblown objects
    • B60W2554/404—Characteristics
    • B60W2554/4043—Lateral speed

Description

DK 155715BDK 155715B

5 Opfindelsen angår et apparat til iblanding af luft eller andre gasarter i en væske ved hjælp af en af en motor drevet propeller.The invention relates to an apparatus for admixing air or other gases into a liquid by means of a propeller driven by a motor.

Det er ofte ønsket at indføre luft eller gasarter i væsker 10 for at fremme en biologisk og/eller kemisk aktivitet. Som eksempel kan nævnes nedbrydning af spildevandsslam, hvor oxygen befordrer den biologiske nedbrydning. Gødningsværdi af flydende, organisk gødning (gylle) kan endvidere forbedres, hvis gyllen tilføres rigeligt oxygen.It is often desired to introduce air or gases into liquids 10 to promote biological and / or chemical activity. For example, wastewater sludge decomposition, where oxygen promotes biological degradation. Furthermore, the fertilizer value of liquid organic fertilizer (manure) can be improved if the manure is supplied with sufficient oxygen.

1515

Der kendes adskillige luftiblandingsapparater af den beskrevne art, men disse har den ulempe, at selv om de kan give en god luftiblanding i området ved luftiblandingsap-paratet, er de ikke i stand til at give en god og jævn 20 luftiblanding i en stor beholders væskeindhold. De kendte luftiblandingsapparater er endvidere ofte komplicerede og dermed dyre, idet de er forsynede med ledeskjolde og kanaler eller lignende, der skal sikre fordeling af den beluftede væske i beholderen.Several air mixing devices of the type described are known, but these have the disadvantage that although they can provide good air mixing in the area of the air mixing apparatus, they are not capable of providing a good and even air mixing in a large container's liquid content. . Furthermore, the known air mixing apparatus is often complicated and thus expensive, being provided with guide shields and ducts or the like, which are intended to ensure distribution of the aerated liquid in the container.

2525

Formålet med opfindelsen er at anvise et apparat til iblanding af luft eller andre gasser i en væske, hvilket apparat både er enkelt og billigt og kan sikre en effektiv beluftning af væsken i en beholder eller et kar, der er 30 betydeligt større end luftiblandingsapparatet.The object of the invention is to provide an apparatus for admixing air or other gases in a liquid which is both simple and inexpensive and can ensure effective aeration of the liquid in a container or vessel which is considerably larger than the air mixing apparatus.

Dette opnås ved et apparat af den ovennævnte art, hvilket apparat ifølge opfindelsen er særegent ved, at der bag propelleren i væskestrønunens retning er anbragt en Ven-35 turi-dyse, at mindst en lufttilførselsledning udmunder i Venturi-dysens væg, og at motoren befinder sig i umiddelbar nærhed af Venturi-dysen, hvorved hele apparatet er 2This is achieved by an apparatus of the aforementioned kind, which apparatus according to the invention is peculiar in that behind the propeller in the direction of the flow of liquid there is arranged a Venturi nozzle, that at least one air supply line opens into the wall of the Venturi nozzle and the engine is located in the immediate vicinity of the Venturi nozzle, the whole apparatus being 2

DK 155715 BDK 155715 B

neddykbart i væsken.submersible in the liquid.

Ifølge opfindelsen anvendes en Venturi-dyse, hvor lufttilførselsledningen munder ud i området, hvor propelleren 5 skaber det største undertryk, så der derved opstår den største effekt med hensyn til, at væskestrømmen ved medrivning suger luft gennem lufttilførslen. Man kan herved udføre beluftning ved selvansugning selv på store dybder.According to the invention, a Venturi nozzle is used, in which the air supply line opens into the area where the propeller 5 creates the greatest negative pressure, so that the greatest effect is obtained in that the liquid flow, when entrained, sucks air through the air supply. Hereby, aeration can be performed by self-suction even at great depths.

På grund af den store retningsvirkning, som tildeles den 10 luftiblandede væske, opnås en effektiv omrøring i beholderen, hvor luftiblandingsapparatet anvendes, også når denne ikke er cirkulær-cylindrisk.Due to the great directional effect assigned to the 10 air-mixed liquid, effective agitation is achieved in the container where the air-mixing apparatus is used, even when it is not circular-cylindrical.

Ved at udforme apparatet i overensstemmelse med krav 2 kan 15 der opnås en god væskecirkulation i for eksempel en spildevandsbeholder .By designing the apparatus according to claim 2, good fluid circulation can be obtained in, for example, a waste water container.

Ved at udforme apparatet i overensstemmelse med patentkrav 3 kan luftiblandingsapparatet indstilles, så en optimal 20 cirkulation opnås i beholderen.By designing the apparatus according to claim 3, the air mixing apparatus can be adjusted so that an optimal circulation is achieved in the container.

Ved at udforme apparatet i overensstemmelse med krav 4 opnås den ønskede mulighed for drejning af luftiblandingsapparatet på enkel og billig måde.By designing the apparatus in accordance with claim 4, the desired possibility of rotating the air mixing apparatus is obtained in a simple and inexpensive manner.

2525

Opfindelsen vil i det følgende blive nærmere beskrevet under henvisning til tegningen, hvorThe invention will now be described in more detail with reference to the accompanying drawings, in which:

Fig. 1 viser et luftiblandingsapparat ifølge opfindel-30 sen, set delvist i snit,FIG. 1 shows an air mixing apparatus according to the invention, partially cut in section,

Fig. 2 viser et luftiblandingsapparat ifølge opfindelsen anbragt i et behandlingskar, 35 Fig. 3 viser et snit gennem karret fra fig. 2 set i pilenes retning langs linien III-III, og 3FIG. 2 shows an air mixing apparatus according to the invention arranged in a treatment vessel; FIG. 3 shows a section through the tub of FIG. 2 in the direction of the arrows along line III-III, and 3

DK 155715BDK 155715B

Fig. 4 viser en anden udførelsesform for et luftiblandingsapparat ifølge opfindelsen.FIG. 4 shows another embodiment of an air mixing apparatus according to the invention.

På fig. 1 ses et luftiblandingsapparat ifølge opfindelsen.In FIG. 1 shows an air mixing apparatus according to the invention.

5 Dette består af en motor 1, der er indkapslet således, at den kan tåle neddykning, og som hensigtsmæssigt er en elektromotor. På motorens 1 udgangsaksel 6, er der fastskruet en propeller 4, der kan sættes i rotation ved hjælp af motoren 1.This consists of a motor 1, which is encased so that it can withstand immersion and is suitably an electric motor. On the output shaft 6 of the motor 1, a propeller 4 is screwed in, which can be rotated by the motor 1.

1010

Rundt om akslen 6 er der ved hjælp af fire bøjler 3 anbragt en Venturi-dyse 2 eller -skærm. En luftslange 5, der står i forbindelse med atmosfæren eller en trykflaske med f.eks. oxygen, udmunder i dysens 2 bagkant, således at 15 væskestrømmen ved medrivning vil suge luft gennem slangen 5. Der skal således ikke anvendes en særskilt luftpumpe.Around the shaft 6 a Venturi nozzle 2 or shield is arranged by means of four hangers 3. An air hose 5 which communicates with the atmosphere or a pressure bottle with e.g. oxygen, discharges into the trailing edge of the nozzle 2 so that the fluid flow upon entrainment will suck air through the hose 5. Thus no separate air pump is to be used.

Den viste propeller er firebladet, men andre former vil også kunne anvendes.The propeller shown is four-blade, but other forms may also be used.

20 På fig. 2 og 3 ses, hvorledes luftiblandingsapparatet ifølge opfindelsen kan anbringes i et behandlingskar 7, der er fyldt med den væske 12, der skal beluftes. I karret 7 er fastgjort en lodret, cirkulær stang 8, som omsluttes 25 af en rørformet del 11, på hvilken motoren 1 er fastgjort. Motoren 1 kan ved hjælp af en snor 9, der er fastgjort til motoren 1, og et spil 10 hæves og sænkes. Man kan f.eks. anbringe motoren 1 i en højde, hvor den er anbragt midt mellem væskeoverfladen og karrets 7 bund.20 In FIG. Figures 2 and 3 show how the air mixing apparatus according to the invention can be placed in a treatment vessel 7 which is filled with the liquid 12 to be aerated. In the tub 7 is mounted a vertical circular rod 8 which is enclosed 25 by a tubular part 11 on which the motor 1 is attached. The motor 1 can be raised and lowered by means of a cord 9 attached to the motor 1 and a winch 10. One can, for example. position the engine 1 at a height where it is positioned midway between the liquid surface and the bottom of the vessel 7.

3030

Da såvel stangen 8 og den rørformede del 11 har cirkulære tværsnit, kan motoren 1 også drejes. Ved at lade motoren 1 pege ud mod en af siderne på karret 7 kan man få en effektiv cirkulation i dette. Eventuelt kan man lade luftiblan-35 dingsapparatet svinge automatisk mellem to yderstillinger.Since both the rod 8 and the tubular portion 11 have circular cross sections, the motor 1 can also be rotated. By allowing the motor 1 to point to one of the sides of the vessel 7, an efficient circulation can be obtained in this. Optionally, the air blending apparatus can be automatically swung between two outer positions.

På fig. 4 ses en anden udførelsesform for et luftiblan-In FIG. 4, another embodiment of an aerial blend is shown.

4 DK 155715B4 DK 155715B

dingsapparat ifølge opfindelsen. Ved denne udmunder lufttilførslen 5 umiddelbart bag propelleren 4, idét denne i dette område skaber det største undertryk under rotation. Herved opnås en meget god sugeevne, således at luftiblan-5 dingsapparatet kan arbejde på store dybder.apparatus according to the invention. By this, the air supply 5 opens immediately behind the propeller 4, which in this area creates the greatest negative pressure during rotation. This results in a very good suction capacity, so that the air-mixing apparatus can work at great depths.

Luftiblandingsapparatet ifølge opfindelsen kan anvendes til iblanding af alle mulige luftarter i alle mulige væsker. Ved passende udformning af propelleren og dysen, kan 10 disse anvendes ved selv tyktflydende eller klumpede væsker som f.eks. slam eller gylle.The air mixing apparatus according to the invention can be used for admixture of all possible gases in all possible liquids. By appropriate design of the propeller and nozzle, these can be used with even viscous or bulky fluids such as e.g. sludge or slurry.

Behandlingskarret kan være udformet på adskillige måder, men et rundt eller elliptisk kar vil give mulighed for en 15 jævn cirkulation rundt i dette.The treatment vessel may be formed in several ways, but a circular or elliptical vessel will allow for a smooth circulation in this.

Det kan endvidere nævnes, at propelleren og dysen hensigtsmæssigt kan fremstilles af formstof. Herved og i øvrigt på grund af den simple opbygning fås et luftiblan-20 dingsapparat, der er meget enkelt af opbygning og dermed billigt at fremstille.Furthermore, it can be mentioned that the propeller and nozzle can conveniently be made of plastic material. Thereby, and because of the simple construction, an air mixing apparatus is obtained which is very simple in construction and thus inexpensive to manufacture.

Endvidere skal det tilføjes, at selv om luftiblandingsapparatet ifølge opfindelsen er beskrevet i en brugsstil-25 ling, hvor propelleren har vandret akse, kan luftiblandingsapparatet naturligvis også anvendes i enhver anden stilling.Furthermore, it should be added that although the air mixing apparatus according to the invention is described in an operating position in which the propeller has a horizontal axis, the air mixing apparatus can of course also be used in any other position.

Endelig kan man forestille sig, at Venturi-dysen kan for-30 længes, således at dens forreste ende omslutter propelleren, der hensigtsmæssigt er anbragt umiddelbart foran dysens indsnævring. Herved kan der opnås en hensigtsmæssig retningsvirkning af den luftiblandede væske.Finally, it is envisaged that the Venturi nozzle can be extended so that its front end encloses the propeller which is conveniently located immediately in front of the nozzle's narrowing. Hereby an appropriate directional effect of the air-mixed liquid can be obtained.

35 Det er klart, at man for at opnå maksimal luftindsugningskapacitet skal dimensionere propelleren, Venturi-dysen og luftindtagsåbningen efter den til rådighed værende motor- 535 It is clear that in order to achieve maximum air suction capacity, the propeller, Venturi nozzle and air intake opening must be dimensioned according to the available engine 5

DK 155715BDK 155715B

effekt, arbejdsdybden og væskens konsistens.power, depth of work and fluid consistency.

55

Claims (4)

1. Apparat til iblanding af luft eller andre gasarter i en væske ved hjælp af en af en motor drevet propeller, 5 kendetegnet ved, at der bag propelleren (4) i væskestrømmens retning er anbragt en Venturi-dyse (2), at mindst en lufttilførselsledning (5) udmunder i Venturi-dy-sens (2) væg, og at motoren (1) befinder sig i umiddelbar nærhed af Venturi-dysen (2), hvorved hele apparatet er 10 neddykbart i væsken.An apparatus for admixing air or other gases into a liquid by means of a propeller driven by a motor, characterized in that a venturi nozzle (2) is arranged behind the propeller (4) in the direction of the fluid flow, air supply line (5) opens into the wall of the Venturi nozzle (2) and the motor (1) is in close proximity to the Venturi nozzle (2), whereby the entire apparatus is submerged in the liquid. 2. Apparat ifølge krav 1, hvor apparatet omfatter et stel til anbringelse i væsken, kendetegnet ved, at propelleren (4) og Venturi-dysen (2) sammen med motoren 15 (1) i apparatets brugsstilling er højdeforskydeligt monte ret på stellet, og at propelleren (4) og Venturi-dysen (2) har i hovedsagen horisontale længdeakser.Apparatus according to claim 1, wherein the apparatus comprises a frame for placement in the liquid, characterized in that the propeller (4) and the Venturi nozzle (2) together with the motor 15 (1) in the position of use of the apparatus are height-adjustable mounted on the frame, and that the propeller (4) and the Venturi nozzle (2) have substantially horizontal longitudinal axes. 3. Apparatet ifølge krav 2, kendetegnet ved, 20 at propelleren (4), Venturi-dysen (2) og motoren (1) er vridbare i et i hovedsagen horisontalt plan omkring stellet.Apparatus according to claim 2, characterized in that the propeller (4), the Venturi nozzle (2) and the motor (1) are rotatable in a substantially horizontal plane about the frame. 4. Apparat ifølge krav 2-3, kendetegnet ved, 25 at stellet består af en stang (8), at propelleren (4), Venturi-dysen (2) og motoren (1) er fastgjort på en stangen (8) omsluttende rørformet del (11), der er indrettet til at kunne forskydes på stangen (8) i dennes længderetning ved hjælp af iøvrigt kendte hæve- og sænkemidler (9, 30 10), og at stangen (8) er udformet til at kunne styre pro pelleren (4), Venturi-dysen (2) og motoren (1) i radial retning.Apparatus according to claims 2-3, characterized in that the frame consists of a rod (8), the propeller (4), the Venturi nozzle (2) and the motor (1) are fixed to a rod (8) enclosing tubular part (11) adapted to be displaceable on the rod (8) in its longitudinal direction by means of otherwise known raising and lowering means (9, 30 10), and the rod (8) being designed to control the propeller (4), the Venturi nozzle (2) and the motor (1) in the radial direction.
DK369683A 1983-08-12 1983-08-12 APPARATUS FOR MIXING AIR IN A FLUID DK155715C (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
DK369683A DK155715C (en) 1983-08-12 1983-08-12 APPARATUS FOR MIXING AIR IN A FLUID
PCT/DK1984/000090 WO1985001452A1 (en) 1983-08-12 1984-09-20 Aerator for introducing air into liquids
EP84903484A EP0158653A1 (en) 1983-08-12 1984-09-20 Aerator for introducing air into liquids
CH2297/85A CH665567A5 (en) 1983-08-12 1984-09-20 LUFTZUFUEHRUNGSGERAET for supplying AIR INTO A LIQUID.
AT0903184A AT383966B (en) 1983-08-12 1984-09-20 DEVICE FOR SUPPLYING AIR OR OTHER GASES INTO A LIQUID
IT8422862A IT1213221B (en) 1983-08-12 1984-09-27 AIR SUPPLY EQUIPMENT IN A FLUID
NO85851944A NO160492C (en) 1983-08-12 1985-05-15 AIR INHIBITOR FOR INTRODUCING AIR OR OTHER GAS SPECIES IN A FLUID.
SE8502536A SE453464B (en) 1983-08-12 1985-05-23 AIR FOR MIXING AIR OR OTHER GASES IN A FLUID

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK369683A DK155715C (en) 1983-08-12 1983-08-12 APPARATUS FOR MIXING AIR IN A FLUID
DK369683 1983-09-27

Publications (4)

Publication Number Publication Date
DK369683D0 DK369683D0 (en) 1983-08-12
DK369683A DK369683A (en) 1985-03-28
DK155715B true DK155715B (en) 1989-05-08
DK155715C DK155715C (en) 1989-09-25

Family

ID=8125771

Family Applications (1)

Application Number Title Priority Date Filing Date
DK369683A DK155715C (en) 1983-08-12 1983-08-12 APPARATUS FOR MIXING AIR IN A FLUID

Country Status (8)

Country Link
EP (1) EP0158653A1 (en)
AT (1) AT383966B (en)
CH (1) CH665567A5 (en)
DK (1) DK155715C (en)
IT (1) IT1213221B (en)
NO (1) NO160492C (en)
SE (1) SE453464B (en)
WO (1) WO1985001452A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE502163C2 (en) * 1993-12-21 1995-09-04 Sunds Defibrator Ind Ab Device for mixing treatment medium in a pulp suspension
FI109281B (en) * 1996-10-31 2002-06-28 Sulzer Pumpen Ag Method and apparatus for mixing gas with liquid
CZ306266B6 (en) * 2007-03-20 2016-11-09 VĂŤTKOVICE ENVI a.s. Mixing device and method of mixing anaerobic reactor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT276262B (en) * 1967-09-26 1969-11-25 Hubert Fuchs Mixing unit for introducing any additional substances as secondary components into liquids or stationary waters, in particular for the biological purification of water
DE2559235B2 (en) * 1975-12-30 1981-03-26 Fa. Erwin Stelzer, 3530 Warburg Gassing device
GB2110550A (en) * 1981-11-20 1983-06-22 Beardmore And Sons Limited R T Treatment of effluent
US4464259A (en) * 1982-09-30 1984-08-07 Air-O-Lator Corporation Hydraulic horizontal mixer

Also Published As

Publication number Publication date
SE8502536L (en) 1985-05-23
IT1213221B (en) 1989-12-14
ATA903184A (en) 1987-02-15
IT8422862A0 (en) 1984-09-27
DK155715C (en) 1989-09-25
EP0158653A1 (en) 1985-10-23
WO1985001452A1 (en) 1985-04-11
NO160492C (en) 1989-04-26
DK369683D0 (en) 1983-08-12
NO851944L (en) 1985-05-15
DK369683A (en) 1985-03-28
CH665567A5 (en) 1988-05-31
SE8502536D0 (en) 1985-05-23
AT383966B (en) 1987-09-10
NO160492B (en) 1989-01-16
SE453464B (en) 1988-02-08

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