[go: up one dir, main page]

WO1988000173A1 - Systeme pour introduire des gaz dans des liquides, notamment pour aerer des eaux usees - Google Patents

Systeme pour introduire des gaz dans des liquides, notamment pour aerer des eaux usees Download PDF

Info

Publication number
WO1988000173A1
WO1988000173A1 PCT/HU1987/000028 HU8700028W WO8800173A1 WO 1988000173 A1 WO1988000173 A1 WO 1988000173A1 HU 8700028 W HU8700028 W HU 8700028W WO 8800173 A1 WO8800173 A1 WO 8800173A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid
pump
gas
gas line
diffuser
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
Application number
PCT/HU1987/000028
Other languages
German (de)
English (en)
Inventor
László SOMLYÓDY
Attila DARÁZS
Gusztáv RÉCSEY
Endre JUHÁSZ
János KRISTÓF
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vizuegyi Tervezo^" Vallalat
Vizgazdalkodasi Tudomanyos Kutatokozpont
Original Assignee
Vizuegyi Tervezo^" Vallalat
Vizgazdalkodasi Tudomanyos Kutatokozpont
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 Vizuegyi Tervezo^" Vallalat, Vizgazdalkodasi Tudomanyos Kutatokozpont filed Critical Vizuegyi Tervezo^" Vallalat
Publication of WO1988000173A1 publication Critical patent/WO1988000173A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/1278—Provisions for mixing or aeration of the mixed liquor
    • C02F3/1294—"Venturi" aeration means
    • 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
    • B01F23/40—Mixing liquids with liquids; Emulsifying
    • B01F23/45—Mixing liquids with liquids; Emulsifying using flow mixing
    • B01F23/454—Mixing liquids with liquids; Emulsifying using flow mixing by injecting a mixture of liquid and gas
    • 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
    • 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
    • B01F25/3123—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof with two or more Venturi elements
    • B01F25/31232—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof with two or more Venturi elements used simultaneously
    • 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
    • B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
    • 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
    • B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
    • B01F25/54—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle provided with a pump inside the receptacle to recirculate the material within the receptacle
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/81—Combinations of similar mixers, e.g. with rotary stirring devices in two or more receptacles
    • 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

Definitions

  • the invention relates to a device for supplying gases to liquids, in particular for
  • Ventilation of waste water with a main pump of a gas line, and a mixing room, which are connected to a liquid jet pump for the gases, the liquid jet pump being provided with a jet nozzle and a diffuser being connected to the mixing room.
  • the known devices for supplying gas to liquids, in particular for venting wastewater can mainly be divided into three groups: - Surface ventilation
  • Two types of surface-mounted ventilation systems are known, which have either a vertical or a horizontal axis.
  • the systems are arranged above the liquid to be vented and are each provided with an aeration wheel which is at least partially immersed in the liquid.
  • the ventilation wheel or rotor is set in rotation at a speed determined by a gear, whereby the wheel or rotor has a Part of the liquid is atomized into the air in the form of smaller or larger drops.
  • the oxygen content of the air can diffuse into the liquid, which is used for the life activities of the aerobic microorganisms.
  • the mixture to be aerated is mixed with the rotating rotor to the extent that the flakes of the activated sludge cannot separate out in the aeration tank.
  • the performance of the specific oxygen supply in these known systems is in practice in the case of aeration from the activated sludge
  • the ventilation systems located below the surface differ from the previous ones in that the air or oxygen below the surface of the liquid is introduced into the liquid to be aerated through diffusers with different hole sizes (porosities) arranged at any depth up to a given limit .
  • the amount of oxygen introduced into the liquid can be increased.
  • the oxygen supply can be regulated to a certain extent by the height of the liquid column above the diffuser.
  • HU-PS 174 256 describes a device with an injector for wastewater homogenization and aeration in lifting shafts, the air intake pipe of which is at a level below the maximum level of the wastewater and the air injection pipe of which is in the vicinity of the shaft floor.
  • the device is used for the reliable implementation of the oxygen supply and homogenization at variable water levels. A satisfactory specific performance of the oxygen supply, however, cannot be achieved with this known device.
  • water is mixed with air and the mixture is led into the basin with nozzles that work on the basis of the injector principle and cross the air line parallel to the line that conducts the liquid.
  • Many air nozzles are required for the air supply and mixing in these known solutions, and therefore the diameter of the nozzles must be relatively small. In this way, these fine nozzles tend to become blocked and cleaning is very difficult only because of the structural design.
  • the object of the invention is now a device for supplying gases, in particular for venting waste water to create, with which besides the elimination of the disadvantages of the known solutions, a large specific performance of the gas supply can be realized with the possibility of regulation corresponding to the respective requirements, with economical operation and with minimal maintenance.
  • the further development according to the invention consists in the fact that openings are formed in the wall of the gas line and / or the mixing chamber, and in the direction of flow after the jet nozzle a swirl element with curved blades and after and / or in front of the diffuser a swirl element are switched on.
  • the importance of this further development can be seen in the fact that it can cause more intensive and faster mixing and finer blistering, since the intensity of the gas diffusion is significantly influenced by the size of the interface between the gas and the liquid.
  • the vortex element flows through, large shear forces arise in the liquid, as a result of which the bubbles are further crushed.
  • the perturbation process between the gas and the liquid phase takes place partly in the device, in which the driving liquid touches the gas and is mixed with it.
  • the greater part of the material transfer process becomes fine during the ascent
  • Bubbles realized after leaving the vortex element a useful fluid movement in the fluid space being induced by the rise of the bubbles.
  • an embodiment is advantageous in which the vortex element in spiral form with a larger thread pitch has curved guide vanes for rotating the liquid-gas mixture in at least one direction of rotation.
  • An air compressor can be connected to the gas line.
  • control rings are provided to at least partially close off the openings in the wall of the gas line and / or the mixing chamber.
  • a pressure line is provided between the main pump and the liquid jet pump.
  • a control element can be provided in the pressure line.
  • the pressure line can be fed by several main pumps.
  • a plurality of liquid jet pumps connected in parallel to one another are connected to the pressure line.
  • FIG. 1 shows a schematic circuit diagram of an advantageous embodiment of the device according to the invention
  • FIG. 2 shows a circuit diagram as in FIG. 1 but for a further advantageous embodiment
  • FIG. 3 shows a view of the embodiment in FIG. 2 that is perpendicular to the previous one.
  • a main pump 1 of the device is connected to a liquid jet pump 4 by a pressure line 2.
  • a sliding valve is provided in the pressure line 2 as the control element 3.
  • An air compressor 6 is assigned to the liquid jet pump 4 through a gas line 5. Openings 7 are provided in the wall of the gas line 5 or the liquid jet pump 4.
  • a jet nozzle 8 which are here End of the pressure line 2 is arranged, and a swirl element 9, which has a curved blade.
  • a mixing chamber 10 is arranged on the outlet side of the liquid jet pump 4, to which a diffuser 11 is connected with the interposition of a vortex element 12.
  • the diffuser 11 likewise ends in a further vortex element 12.
  • the gas line 5 and the liquid jet pump are each provided with an outer regulating ring 13 in the region of the openings 7, with which the openings 7 can also be partially closed.
  • FIG. 1 The construction parts mentioned in connection with FIG. 1 can also be found in the embodiment according to FIGS. 2 and 3, with the exception of the release compressor 6. It is illustrated here that a plurality of liquid jet pumps are also on a pressure line 2
  • the angle of inclination of the mixing space 10 to the vertical can also be chosen freely. With this measure, complete mixing and an air supply with high performance can be achieved.
  • the structural parts of the device according to the invention are arranged below the water level 14 of the waste water basin.
  • the liquid sucked in from the aeration basin with the main pump 1, which can be, for example, a centrifugal submersible pump, is passed through the control element 3 in a quantity-controlled manner to the jet nozzle 8, which leaves it accelerated and takes the gas introduced through the gas line 5 and the gas through it any opened openings 7 with liquid.
  • the liquid phase and the gas phase are then mixed together by the swirl element 9 in the mixing chamber 10.
  • the swirl element 9 is formed from sheet metal in this embodiment and has a curved blade.
  • the mixing becomes highly intensive, as a result of which the dimensioning length of the mixing space 10 could be reduced.
  • the liquid-gas mixture accordingly passes through the diffuser 11 arranged between the vortex elements 12.
  • the vortex elements 12 used in this example the mixture is forced to twist in two directions.
  • the Vortexelecr.ente 12 have guide vanes which are curved in a spiral shape, the spiral shapes each having a large thread pitch.
  • the diffuser 11 the gas bubbles are distributed even more homogeneously in the liquid, which is also promoted by the vortex elements 12.
  • the operating mode adapted to the respective requirements is set by the control element 3 and by the control rings 13 of the openings 7.
  • the openings 7 cause a secondary liquid flow in the mixing space 10. This secondary flow can to discharge chemicals into the wastewater in a controlled amount, which is required several times in the wastewater treatment technologies.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)

Abstract

Système pour introduire des gaz dans des liquides, notamment pour aérer des eaux usées, comportant une pompe principale, une conduite de gaz et une chambre de mélange qui sont reliées à une pompe de projection de liquide pour les gaz, la pompe de projection de liquide étant pourvue d'un ajutage de projection et un diffuseur étant relié à la chambre de mélange. Le perfectionnement de l'invention réside dans le fait que la paroi de la conduite de gaz (5) et/ou de la chambre de mélange (10) est pourvue d'ouvertures (7), et que dans la direction de projection en aval de l'ajutage de projection (8), sont incorporés un élément de giration (9) à aubage incurvé ainsi qu'un élément tourbillonnaire (12) en aval et/ou en amont du diffuseur (11).
PCT/HU1987/000028 1986-07-03 1987-07-03 Systeme pour introduire des gaz dans des liquides, notamment pour aerer des eaux usees Ceased WO1988000173A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HU2799/86 1986-07-03
HU862799A HU197277B (en) 1986-07-03 1986-07-03 Equipment for introduction of gases into liquids, primarily for airing of sewages

Publications (1)

Publication Number Publication Date
WO1988000173A1 true WO1988000173A1 (fr) 1988-01-14

Family

ID=10961149

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/HU1987/000028 Ceased WO1988000173A1 (fr) 1986-07-03 1987-07-03 Systeme pour introduire des gaz dans des liquides, notamment pour aerer des eaux usees

Country Status (3)

Country Link
EP (1) EP0274494A1 (fr)
HU (1) HU197277B (fr)
WO (1) WO1988000173A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995027557A1 (fr) * 1994-04-12 1995-10-19 Ekokehitys Oy Procede de production de bulles de gaz dans un liquide et appareil conçu a cet effet
RU2191164C1 (ru) * 2001-08-15 2002-10-20 Воронежский государственный архитектурно-строительный университет Устройство для аэрации воды
RU2194016C2 (ru) * 2000-03-27 2002-12-10 Сопленков Константин Иванович Способ аэрации жидкостей и устройство для очистки сточных вод
CN105399201A (zh) * 2015-12-17 2016-03-16 江苏新奇环保有限公司 一种模块化硝化罐
CN105417684A (zh) * 2015-12-17 2016-03-23 江苏新奇环保有限公司 一种硝化罐

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4123800A (en) * 1977-05-18 1978-10-31 Mazzei Angelo L Mixer-injector
US4226719A (en) * 1978-07-10 1980-10-07 Woltman Robert B Treating device for large bodies of water
DE3103306A1 (de) * 1981-01-31 1982-08-26 Steag Ag, 4300 Essen "belueftungsvorrichtung fuer in oberflaechenwaesser zurueckzuleitende abwaesser, insbesondere fuer die anreicherung von gebrauchswaessern mit sauerstoff"
DD157412A3 (de) * 1979-04-17 1982-11-10 Erich Wilinski Einrichtung zur belueftung von eisenhaltigem grundwasser

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4123800A (en) * 1977-05-18 1978-10-31 Mazzei Angelo L Mixer-injector
US4226719A (en) * 1978-07-10 1980-10-07 Woltman Robert B Treating device for large bodies of water
DD157412A3 (de) * 1979-04-17 1982-11-10 Erich Wilinski Einrichtung zur belueftung von eisenhaltigem grundwasser
DE3103306A1 (de) * 1981-01-31 1982-08-26 Steag Ag, 4300 Essen "belueftungsvorrichtung fuer in oberflaechenwaesser zurueckzuleitende abwaesser, insbesondere fuer die anreicherung von gebrauchswaessern mit sauerstoff"

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995027557A1 (fr) * 1994-04-12 1995-10-19 Ekokehitys Oy Procede de production de bulles de gaz dans un liquide et appareil conçu a cet effet
RU2194016C2 (ru) * 2000-03-27 2002-12-10 Сопленков Константин Иванович Способ аэрации жидкостей и устройство для очистки сточных вод
RU2191164C1 (ru) * 2001-08-15 2002-10-20 Воронежский государственный архитектурно-строительный университет Устройство для аэрации воды
CN105399201A (zh) * 2015-12-17 2016-03-16 江苏新奇环保有限公司 一种模块化硝化罐
CN105417684A (zh) * 2015-12-17 2016-03-23 江苏新奇环保有限公司 一种硝化罐

Also Published As

Publication number Publication date
HU197277B (en) 1989-03-28
EP0274494A1 (fr) 1988-07-20
HUT45726A (en) 1988-08-29

Similar Documents

Publication Publication Date Title
DE2216304C3 (de) Einrichtung zur Umwälzung und Belüftung einer sich in einem Belebungsbecken einer Kläranlage befindenden Flüssigkeit
DE2461032B2 (de) Vorrichtung zum Begasen und Umwälzen von z.B. wäßrigen Flüssigkeiten
DE1813938A1 (de) Oberflaechenbeluefter zum Umwaelzen und Belueften von Fluessigkeiten,insbesondere fuer Abwasserreinigungsanlagen
DE102019103252B3 (de) Vorrichtung zum Belüften von Gewässern
DE3006935A1 (de) Belueftungsvorrichtung
DE2205612A1 (de) Vorrichtung und Anlage zum Behandeln von Flüssigkeiten, insbesondere Trinkwasser oder Abwasser
DE1265137B (de) Ruehrwerk zum Belueften von Fluessigkeiten
DE3525861C2 (fr)
DE69420277T2 (de) Zentrifugale flüssigkeitspumpe mit inwendiger gasinjektionsvorrichting
EP0042620B1 (fr) Dispositif pour le traitement du purin
WO1988000173A1 (fr) Systeme pour introduire des gaz dans des liquides, notamment pour aerer des eaux usees
CH630268A5 (de) Oberflaechenbelueftungskreisel.
CH658409A5 (de) Wasserbelueftungsvorrichtung.
EP1360986B1 (fr) Accélerateur d'impulsions hydrodynamique
DE3421211A1 (de) Anlage zur eintragung von sauerstoff in fluessige medien und verwendung dieser anlage
DE2452295B2 (de) Verfahren und vorrichtung zur biologischen reinigung von abwasser
DE4312971A1 (de) Verfahren und Vorrichtung zur Belüftung von Gewässern
DE942211C (de) Vorrichtung zum Verteilen eines Gases in einer Fluessigkeit
DE19849697C2 (de) Verfahren und Vorrichtung zur Begasung einer Flüssigkeit
DE2147080A1 (de) Vorrichtung zur belueftung von abwasser im belueftungsbecken einer abwasserreinigungsanlage
CH514506A (de) Einrichtung zum Belüften von Flüssigkeiten, insbesondere von zu klärenden Abwässern
EP0410959B1 (fr) Dispositif pour le traitement des eaux contenues dans un bassin
DE2034269A1 (de) Einrichtung zum Umwälzen und Be lüften von Flüssigkeit
DE2436273A1 (de) Vorrichtung zum eintragen eines gases in eine fluessigkeit
DE2559237A1 (de) Einrichtung zur begasung von fluessigkeit

Legal Events

Date Code Title Description
AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LU NL SE

WWE Wipo information: entry into national phase

Ref document number: 1987904305

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1987904305

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 1987904305

Country of ref document: EP