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
  • C02F3/14—Activated sludge processes using surface aeration
  • C02F3/145—Protection against aerosols
• • 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
  • B01F23/2334—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements provided with stationary guiding means surrounding at least partially the stirrer
  • B01F23/23341—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements provided with stationary guiding means surrounding at least partially the stirrer with tubes surrounding the 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
  • B01F23/23362—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 under the stirrer
• • 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
  • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
  • B01F33/50—Movable or transportable mixing devices or plants
  • B01F33/503—Floating mixing devices
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
  • B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
  • B01F35/32—Driving arrangements
  • B01F35/321—Disposition of the drive
  • B01F35/3213—Disposition of the drive at the lower side of the axis, e.g. driving the stirrer from the bottom of a receptacle
• • 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
  • C02F3/14—Activated sludge processes using surface aeration
  • C02F3/16—Activated sludge processes using surface aeration the aerator having a vertical axis
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
  • B01F2101/305—Treatment of water, waste water or sewage
• • 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
• • 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 the system for vertical gassing and / or mixing of liquids, i.e. a plant for the purification and treatment of water in the field of environmental protection, the enrichment of standing water in pools, in fish ponds and dams with oxygen, and the dissolution of gases in liquids.
• the current systems use a process based on their mechanical or pneumatic principle for the gassing of liquids.
• the hollow shaft has openings with a grid in the upper part, which ensure the forced air or gas supply, and in the lower part on the blades of the spiral impeller, it has a reinforcement that increases tangentially in the direction of the blade outflow edge.
• the air is distributed into the liquid in the form of bubbles as the blades rotate.
• the impeller is inserted in a pipe diffuser that is mounted perpendicular to the axis on both sides and which, depending on the direction of rotation, enables the direction of flow of the liquid to be changed.
• the motor is mounted in a watertight chamber, which functions as a float and at the same time as an aligner for the flow of the mixed liquid, the motor being the impeller immersed vertically or obliquely in the liquid drives.
• the system can also be equipped with a compressed gas supply leading to the impeller, and the impeller can be located at the same time between diagonally widening plates which are attached to the watertight chamber, or also in guide plates opening above the surface.
• the watertight chamber can be equipped with blades and can function as a large impeller.
• Pneumatic systems that ensure liquid gassing mainly consist of a compressed air source, usually a blower, the gassing membranes that ensure the distribution of compressed air into small bubbles, and the compressed air transport lines from the compressed air source into the gassing membranes.
• the disadvantage of the operation of pneumatic systems for the liquid gasification is that they require the use of noisy compressed air sources with a complex construction object, the construction of complicated compressed air transport pipelines and the emptying of the basin when the fumigation membranes are installed.
• the technical complexity of such systems causes frequent disturbances of the gassing membranes due to the blockage of the small openings that distribute the transported air into small bubbles or the constant interruption of the air flow during operation. For these reasons, the systems mentioned require high investment costs.
• the system has an electric motor installed above the liquid surface, which rotates an impeller with axial blades, which transports the liquid in a vertical direction from the pool floor via a suction nozzle, guide vanes and a transport channel into the mixing wheel, in which the liquid, with its dynamic effect, creates a vacuum in the Intake gaps are created, causing air to be drawn in through the intake pipe and mixed with the liquid.
• the resulting mixture of liquid and air bubbles is then transported into the basin in the horizontal direction via directional blades, the curvature of the directional blades indicating the rotation of the mixing wheel.
• the system is installed on a supporting float that floats on the surface of the liquid and holds the system at a constant depth in an interval of 0.1 m to 5.0 m below the surface of the liquid.
• a disadvantage of the operation of this system is that the electric motor is installed above the surface, which increases the structural dimensions of the entire system, its weight and the requirements for the use of its rotating parts.
• Another major disadvantage is the use of the combination of the vertical liquid flow and its diversion in the horizontal direction, which increases the hydraulic losses in this fumigation and / or mixing mode of liquids, since the horizontal direction of outflow of the mixture of liquid and air bubbles clearly exploits the dynamic energy of the liquid and air bubble mixture is reduced.
• This invention which consists of the float, the submersible electric motor, the impeller with the axial blades, the outer casing with the guide blades, the air intake pipes, the mixing chambers for air and liquid, the bell-like body and the supporting body, the essence of which is that on the surface of the fumigated and / or mixed liquid is the supporting float, which is connected to the bell-shaped body opened from below, in which the supporting body of the system, the submersible electric motor and the shaft are inserted.
• the impeller with the axial blades is located on the shaft.
• the vertically flowed outer jacket with the guide vanes and at least one air intake pipeline with at least one mixing chamber for liquid and air in such a way that the supporting body of the system takes up the space behind the guide blades via the nozzle with the opening of the Air intake pipe and the opening of the mixing chamber for liquid and air. It is advantageous if the axis of the mixing chamber for liquid and air encloses an angle of 0 to 60 degrees with the vertical axis of the submersible electric motor, and / or if the nozzle is below the surface of the fumigated and / or mixed liquid from 0.1 to 5 m.
• the greatest advantage of the system for vertical gassing and / or mixing of liquids according to the invention is that the low speed and the large flow rate of the liquid ensure better use of energy by the electric motor, which is delivered to the liquid via the impeller with the axial blades , which ensures that the required amount of air is drawn in.
• Another advantage of this invention is that the increase in the performance of such systems is particularly dependent on the mass flow of the liquid, for which purpose the impeller with the axial blades requires minimal energy.
• FIG. 1 An example of the system for vertical gassing and / or mixing of liquids is shown schematically in cross section on the attached Fig. 1, the system according to the invention being in a liquid pool.
• the system for vertical gassing and / or mixing of liquids according to the invention shown in Fig. 1 consists of the float 8, the submersible electric motor 1, the impeller with the axial blades 2, the outer casing with the guide blades 3, the pair of air intake pipes 6, the pair Mixing chambers for air and liquid 5, the bell-like body 7 and the supporting body 9, the system shown being located in a basin 10.
• the supporting float 8 On the surface of the fumigated and / or mixed liquid there is the supporting float 8 in the basin 10, which is connected to a bell-like body 7 which is open from below and in which the supporting body 9 of the system is mounted.
• the submersible electric motor 1 In the supporting body 9 of the system, the submersible electric motor 1 is inserted, on the rotating shaft of which the impeller with the axial blades 2 is located.
• the vertical body with the guide vanes 3, the pair of air intake pipes 6 and the pair of mixing chambers for liquid and air 5 are mounted in the supporting body 9 of the system in such a way that the supporting body 9 of the system takes up the space behind the guide vanes 3 via the nozzle 4 connects to the opening of the air intake pipe 6 and the mixing chamber for liquid and air 5.
• the axis of the liquid and air mixing chamber 5 encloses an angle of 0 to 60 degrees from the vertical axis of the submersible electric motor 1.
• the system for fumigation and / or mixing of liquids according to the invention shown in Fig. 1 is mounted on the surface of a liquid in a pool 10 to a supporting float 8 in such a way that its nozzle 4 mounted in the supporting body 9 of the system at a depth of 0.1 to 5 m below the surface of the fumigated and / or mixed liquid.
• the impeller with the axial blades 2 is set in motion via the drive shaft, and the liquid inside the bell-shaped body 7 opened from below in the vertical direction to the axis of the submersible electric motor I via the vertically flowing outer jacket with the guide blades 3_ in the load-bearing body 9 the System transported to the nozzle 4.
• a negative pressure is formed by the dynamic effect of the liquid flow, which automatically draws air from the environment through the air intake pipeline 6 through certain known hydraulic conditions, which is then mixed with the liquid in the mixing chambers for liquid and air 5.
• the air-liquid mixture of this type flows at an angle of 0 to 60 degrees through the opening in the mixing chambers 5 into the liquid in the basin 10, where it gradually disperses in the liquid and the air continuously escapes from it into the environment.
• the vertical system according to the invention only fulfills the function of the liquid mixture without air.
• the vertical system according to the invention fulfills the function of gassing and / or, if necessary, without air access to the mixture of the liquid in a basin 10.
• the system described and shown is not the only possible implementation of the method for vertical gassing and / or mixing of liquids according to the invention, since another implementation of the system can have one or more than two air intake pipes or one or more than two mixing chambers for air and Liquid whose axis can enclose any angle from 0 to 60 degrees with the vertical axis of the submersible motor, the number of air intake pipes can differ from the number of mixing chambers and the individual mixing chambers can have different angles to the axis of the submersible motor. Furthermore, the mixing chambers can rotate about the axis of the submersible motor during operation of the system. Likewise, the mixing of air with the liquid can be forced using operating elements (not shown).
• the systems according to the invention can work in large pools, such as. in fish ponds, dams, etc., or in river beds.
• the system for vertical gassing and / or mixing of liquids can also be used where the liquid is to be gassed and thus enriched and / or mixed with oxygen, for example in the cleaning of surface, ground and waste water, and in water treatment among others, especially in agriculture, in the food, chemical and other industries.

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• 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)

Applications Claiming Priority (2)

Publications (1)

Family

ID=20435857

Family Applications (1)

Country Status (3)

Cited By (3)

Citations (3)

• 2001
  • 2001-04-20 SK SK546-2001A patent/SK284673B6/sk not_active IP Right Cessation
• 2002
  • 2002-04-09 WO PCT/SK2002/000004 patent/WO2002085503A1/de not_active Ceased
  • 2002-04-09 CZ CZ20031944A patent/CZ298993B6/cs not_active IP Right Cessation

Patent Citations (3)

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