WO1996022249A1 - Container for liquid with dispersion device - Google Patents

Container for liquid with dispersion device Download PDF

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Publication number
WO1996022249A1
WO1996022249A1 PCT/SE1996/000041 SE9600041W WO9622249A1 WO 1996022249 A1 WO1996022249 A1 WO 1996022249A1 SE 9600041 W SE9600041 W SE 9600041W WO 9622249 A1 WO9622249 A1 WO 9622249A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
dispersion
pipe
liquid
air
Prior art date
Application number
PCT/SE1996/000041
Other languages
English (en)
French (fr)
Inventor
Kent Isaksson
Hans Eriksson
Original Assignee
Norrtaelje Kommun Tekniska Kon
Kent Isaksson
Hans Eriksson
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 Norrtaelje Kommun Tekniska Kon, Kent Isaksson, Hans Eriksson filed Critical Norrtaelje Kommun Tekniska Kon
Priority to PL96321471A priority Critical patent/PL181379B1/pl
Priority to AU44996/96A priority patent/AU4499696A/en
Priority to EE9700161A priority patent/EE9700161A/xx
Priority to US08/875,122 priority patent/US6017449A/en
Priority to JP8522206A priority patent/JPH10512489A/ja
Publication of WO1996022249A1 publication Critical patent/WO1996022249A1/en
Priority to FI973058A priority patent/FI973058A0/sv

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/1431—Dissolved air flotation machines
    • 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
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23123—Diffusers consisting of rigid porous or perforated material
    • 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
    • B01F23/232—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles
    • B01F23/2323—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles by circulating the flow in guiding constructions or conduits
    • 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
    • B01F23/232—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles
    • B01F23/2323—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles by circulating the flow in guiding constructions or conduits
    • B01F23/23231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles by circulating the flow in guiding constructions or conduits being at least partially immersed in the liquid, e.g. in a closed circuit
    • B01F23/232312—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles by circulating the flow in guiding constructions or conduits being at least partially immersed in the liquid, e.g. in a closed circuit the guiding constructions being baffles for guiding the flow up-and-down or from left-to-right
    • 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
    • B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
    • B01F25/21—Jet mixers, i.e. mixers using high-speed fluid streams with submerged injectors, e.g. nozzles, for injecting high-pressure jets into a large volume or into mixing chambers
    • 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
    • B01F33/70—Mixers specially adapted for working at sub- or super-atmospheric pressure, e.g. combined with de-foaming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/1412—Flotation machines with baffles, e.g. at the wall for redirecting settling solids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/1443—Feed or discharge mechanisms for flotation tanks
    • B03D1/1475—Flotation tanks having means for discharging the pulp, e.g. as a bleed stream
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/24—Pneumatic
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/24—Treatment of water, waste water, or sewage by flotation
    • 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
    • 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
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23126—Diffusers characterised by the shape of the diffuser element
    • B01F23/231265—Diffusers characterised by the shape of the diffuser element being tubes, tubular elements, cylindrical elements or set of tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/02—Froth-flotation processes
    • B03D1/028—Control and monitoring of flotation processes; computer models therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/1443—Feed or discharge mechanisms for flotation tanks
    • B03D1/1462—Discharge mechanisms for the froth

Definitions

  • the present invention relates to a liquid container which includes a liquid inlet and means for delivering pressurized, gas-saturated liquid to the liquid introduced through the inlet in the close vicinity thereof.
  • Flotation plants are used to an ever-increasing extent in the purification of water, both drinking water and sewage water, with the intention of increasing the rate at which the water flows through the purification plant and therewith also enable the size of the necessary tanks and thus the purifica ⁇ tion plant has a whole to be reduced.
  • drinking water the requirements of the end product are essentially unitary and the construction of a purification plant is essentially determined by the nature of the water source or procurement.
  • the water source is a lake or river
  • coarse particles are normally separated from the water in a screen ⁇ ing chamber, whereafter the water is purified chemically and biologically by adding thereto precipitation and flocculating agents in a flocculating chamber.
  • the precipitated particles are then separated from the water, by allowing the particles to settle to the bottom of a sedimentation tank gravitation- ally.
  • Different types of particles will have different densities and therewith different settling rates.
  • the tank In order for particles of low densities, "light particles”, to have time to settle as the water passes through a sedimentation tank, the tank must be given a large surface area so to provide the long period of time taken for such light particles to settle.
  • Particle separation times can be greatly reduced by flotation processes, in which there are added to the water microscopic air bubbles to which particles or particle floes in the water adhere. These bubbles also contribute in forming particle floes and in maintaining floe coherency. Air bubbles rise quickly to the surface of the water, carrying with them the adhered particles and particle floes, these floes forming a stable coating of slime on the surface of the water, which can be removed with the aid of scrapers or by intermittentl raising the water level in the flotation tank so that the slime coating will flow into a slime chute provided at one edge of the tank.
  • the microscopic air bubbles used in flotation processes have a diameter of 30-80 ⁇ m and cannot be produced by simply injecting air directly into water, for instance.
  • Microscopic air bubbles intended for drinking water flotation processes are normally produced by releasing pressurized air into clean water from a pressure vessel. The highest possible degree of saturation is sought for in this regard.
  • This water is conducted to an inlet for water that has undergone a flocculation process, so-called flocculated water, and which is situated at the bottom of the flotation tank, while maintaining the high pressure of said water, and is there delivered to the flocculated water through separate nozzles or jets which are constructed to generate an instantaneous decrease in pressure to a level at which the air dissolved in the water is released in the form of microscopic bubbles and forms a dispersion of air in the water.
  • flocculated water a flocculation process
  • Those pressure vessels used to produce highly pressurized dispersion water that has been saturated with air to the greatest possible extent are normally kept half-filled with water with the aid of control equipment and associated water level sensing means. Compressed air is delivered to the air- filled space above the water surface and the water is often delivered through a nozzle mounted in a vessel side wall in the vicinity of the air-filled space. This water is injected onto the opposing vessel side wall such that the water jet will disintegrate to some extent as it impinges thereon.
  • the flotation method provides a considerably shorter water purification time, and the shortened through-passage time enables purification plants to be made smaller without impairing their earlier capacity. This reduction in the space requirement of purification plants opens new avenues of use.
  • the method does not only carry with it certain advantages.
  • the method also makes the purification method more expensive, because water that has already been purified is recycled and used to produce dispersion water.
  • refined methods are required to maintain the consumption of disper- sion water at a low level, partly by endeavouring to increase the degree of air saturation in the dispersion water, and partly by improving dispersion as the dispersion water flows in to the flotation tank.
  • the dispersion water is introduced into the flotation tank through a number of nozzles, each of which includes a throttle valve which achieves the instanta ⁇ neous decrease in the pressure of the dispersion water required to release the air in said water and therewith form microscopic bubbles.
  • the nozzles are often mounted in a rake ⁇ like configuration on one side of a distributor pipe or conduit means that has a length of several metres and to which the water is delivered through a feeder pipe mounted midway along the distributor pipe, essentially at right angles to the nozzles.
  • the feeder pipe can be likened to the hole in which the rake handle is fitted.
  • a "rake” can include twenty-five nozzles screwed into sleeves welded on the distribution pipe.
  • Distribution pipes complete with nozzles are relatively expensive, and when the nozzles are made of plastic, the nozzles are easily damaged, for instance when cleaning the tanks.
  • the object of the present invention is to provide a liquid container which includes means that will distribute and disperse pressurized gas saturated liquid to a high degree of effectiveness and efficiency. Another object is to provide such a means which is both robust and relatively cheap to manufacture.
  • Fig. 1 is a schematic sectioned side view of a conventionally equipped flotation tank
  • Fig. 2 is a partially sectioned front view of inventive means for distributing and dispersing air-saturated water
  • Fig. 3 is a partially sectioned side view of the means shown in Fig. 2.
  • Fig. 1 is a schematic, sectioned side view of a conventional- ly equipped flotation tank generally referenced 1.
  • the tank includes an inlet 2 to which water is delivered from a flocculation chamber, not shown.
  • the water is caused to flow upwards in the tank 1, by an inclined barrier or baffle 3 mounted inwardly of the inlet 2.
  • the pipe 6 functions to deliver air-saturated water, dispersion water, to the flocculated water flowing into the tank through the inlet 2, wherein the pressurized injected dispersion water speeds up the movement of the flocculated water.
  • the nozzles or jets 5 are constructed to cause the pressure of the dispersion water to be lowered instantaneously, therewith releasing air from the dispersion water and forming microscopic bubbles which, as they travel towards the surface of the water collect particles and particle floes and move the major part of these particles and floes quickly to the surface of the water and there form a covering of slime, which is removed and deposited in a slime chute 8 located adjacent the tank wall 9 with the aid of some form of slime scraper 7, or is removed in some other way.
  • Fig. 2 is a schematic, partially sectioned front view of inventive means generally referenced 21, for distributing and dispersing air-saturated water.
  • the distribution and disper ⁇ sion means includes a casing comprised partly of a horizon ⁇ tally extending distribution pipe having dispersion water outlet holes 23 disposed along one side thereof (the rear side in the Figure), and partly a pipe connection 24 mounted midway along the distribution pipe and to which a dispersion water feeder pipe 25 is connected.
  • Mounted within the casing is a pre-disperser having dispersion water throttling holes 26 through which the dispersion water is forced to pass prior to arriving at the distribution pipe 22, therewith lowering the pressure of the dispersion water and effecting a certain degree of pre-dispersion.
  • the pre- disperser 27 shown to the left of the symmetry line is accommodated essentially in the pipe connector 24 and is comprised of a container which has been provided with throttle holes 26 and into which the feeder pipe 25 discharg- es.
  • the pre-disperser 28 shown to the right of the symmetry line in Fig. 2 has the form of a pipe which is placed coaxially with the distribution pipe 22 and which has arranged along one side of the throttle holes 26 through which dispersion water delivered to the disperser 28 through the extension of the feeder pipe 25 is pressed out, wherein a certain degree of dispersion takes place in the aforedescribed manner prior to final dispersion upon passage through the holes 23.
  • the holes 23 can be replaced with narrow horizontal slots or with a slot that extends longitudinally of the pipe.
  • the distribution and dispersion means shown on the right of Fig. 2 is also shown in a partially sectioned side view in Fig. 3.
  • the various components are identified with the same reference signs used in Fig. 2.
  • the directions in which the dispersion water flows in and between the two pipes is indicated with arrows.
  • the embodiment of the pre-disperser 28 shown in Fig. 3 and in the right-hand part of Fig. 2 is particularly suited for use with long distribution pipes, whereas the pre-disperser 27 shown in the left-hand part of Fig. 2 is more suitable for short distribution pipes.
  • the water throttling holes 26 may be provided with the aid of a net which replaces the mantle surfaces of respective pre-dispersers 27 and 28 either completely or partially.
  • the outlet holes 23 in the distribution pipe 22 may also be formed with the aid of a net.
  • the distribution pipe 22 it is beneficial for the distribution pipe 22 to form a direct extension of the connector pipe 24.
PCT/SE1996/000041 1995-01-19 1996-01-18 Container for liquid with dispersion device WO1996022249A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
PL96321471A PL181379B1 (pl) 1995-01-19 1996-01-18 Urzadzenie do dyspersji gazu w plynie, zwlaszcza do dyspersji powietrza w wodzie PL
AU44996/96A AU4499696A (en) 1995-01-19 1996-01-18 Container for liquid with dispersion device
EE9700161A EE9700161A (et) 1995-01-19 1996-01-18 Dispergaatoriga vedelikumahuti
US08/875,122 US6017449A (en) 1995-01-19 1996-01-18 Container for liquid with dispersion device
JP8522206A JPH10512489A (ja) 1995-01-19 1996-01-18 分散装置を備えた液体容器
FI973058A FI973058A0 (sv) 1995-01-19 1997-07-18 Behållare för vätska med spridningsanordning

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9500216-8 1995-01-19
SE9500216A SE503894C2 (sv) 1995-01-19 1995-01-19 Anordning för distribution och dispersion av luftmättat vatten

Publications (1)

Publication Number Publication Date
WO1996022249A1 true WO1996022249A1 (en) 1996-07-25

Family

ID=20396917

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/SE1996/000041 WO1996022249A1 (en) 1995-01-19 1996-01-18 Container for liquid with dispersion device
PCT/SE1996/000051 WO1996022251A1 (en) 1995-01-19 1996-01-19 Apparatus for distribution and dispersion of air saturated water

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/SE1996/000051 WO1996022251A1 (en) 1995-01-19 1996-01-19 Apparatus for distribution and dispersion of air saturated water

Country Status (13)

Country Link
US (1) US6017449A (sv)
EP (1) EP0871590B1 (sv)
JP (1) JPH10512489A (sv)
CN (1) CN1108277C (sv)
AT (1) ATE210082T1 (sv)
AU (2) AU4499696A (sv)
CA (1) CA2211002A1 (sv)
DE (1) DE69617739D1 (sv)
EE (1) EE9700161A (sv)
FI (1) FI973058A0 (sv)
PL (1) PL181379B1 (sv)
SE (1) SE503894C2 (sv)
WO (2) WO1996022249A1 (sv)

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USRE43350E1 (en) 1995-05-05 2012-05-08 Think Village-Kerfoot, Llc Microporous diffusion apparatus
US5855775A (en) 1995-05-05 1999-01-05 Kerfoot; William B. Microporous diffusion apparatus
US6436285B1 (en) * 1999-12-22 2002-08-20 William B. Kerfoot Laminated microporous diffuser
US6293529B1 (en) * 2000-06-01 2001-09-25 Tsun Shin Chang Bubble generating apparatus
US8557110B2 (en) * 2000-07-06 2013-10-15 Thinkvillage-Kerfoot, Llc Groundwater and subsurface remediation
US6582611B1 (en) 2000-07-06 2003-06-24 William B. Kerfoot Groundwater and subsurface remediation
US7547388B2 (en) * 2004-07-20 2009-06-16 Think Village-Kerfoot, Llc Superoxidant poiser for groundwater and soil treatment with in-situ oxidation-reduction and acidity-basicity adjustment
US6913251B2 (en) 2003-02-12 2005-07-05 William B. Kerfoot Deep well sparging
US7442313B2 (en) * 2003-08-27 2008-10-28 Thinkvillage-Kerfoot, Llc Environmental remediation method and system
US7666316B2 (en) 2004-07-20 2010-02-23 Thinkvillage-Kerfoot, Llc Permanganate-coated ozone for groundwater and soil treatment with in-situ oxidation
US8302939B2 (en) * 2003-02-12 2012-11-06 Thinkvillage-Kerfoot, Llc Soil and water remediation system and method
DE10329491A1 (de) * 2003-07-01 2005-01-27 Basf Ag Reaktor für gas/flüssig oder gas/flüssig/fest Reaktionen
US7401767B2 (en) * 2003-12-24 2008-07-22 Kerfoot William B Directional microporous diffuser and directional sparging
US7621696B2 (en) * 2006-07-12 2009-11-24 Thinkvillage-Kerfoot, Llc Directional microporous diffuser and directional sparging
US7651611B2 (en) * 2006-07-12 2010-01-26 Thinkvillage-Kerfoot, Llc Directional microporous diffuser and directional sparging
US8771507B2 (en) 2003-12-24 2014-07-08 Thinkvillage-Kerfoot, Llc Directional microporous diffuser and directional sparging
US7820137B2 (en) * 2006-08-04 2010-10-26 Enerdel, Inc. Lithium titanate and method of forming the same
DE102012207731A1 (de) * 2012-05-09 2013-11-14 Matan Beery Vorrichtung und Verfahren zur Vorreinigung von Wasser,insbesondere Meerwasser
FI126360B (sv) * 2012-11-23 2016-10-31 Ferroplan Oy Vattenbehandlingsförfarande och -anordning
US9694401B2 (en) 2013-03-04 2017-07-04 Kerfoot Technologies, Inc. Method and apparatus for treating perfluoroalkyl compounds
US10005687B1 (en) * 2014-02-03 2018-06-26 Hydro Treatment Technologies, LP Dissolved air flotation system
CN105689157B (zh) * 2016-04-11 2017-11-07 安徽理工大学 一种具有自调浆功能的摇摆搅拌式浮选设备
US9993778B2 (en) * 2016-06-08 2018-06-12 The Boeing Company Diffusion horn
DE102018128951A1 (de) * 2018-11-19 2020-05-20 Ewk Umwelttechnik Gmbh Flotationsvorrichtung

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US4338192A (en) * 1978-12-18 1982-07-06 Ingersoll-Rand Company Clarifier bubble generation and distribution nozzle
US4639313A (en) * 1985-07-05 1987-01-27 The Deister Concentrator Company Floatation apparatus for concentration of minerals from high water content aqueous slurries

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112248189A (zh) * 2020-10-27 2021-01-22 广州元玛高新材料技术研究有限公司 无机人造石荒料的成型方法及成型设备
CN112248189B (zh) * 2020-10-27 2022-03-08 广州元玛高新材料技术研究有限公司 无机人造石荒料的成型方法及成型设备

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FI973058A (sv) 1997-07-18
ATE210082T1 (de) 2001-12-15
DE69617739D1 (de) 2002-01-17
SE503894C2 (sv) 1996-09-30
AU4499696A (en) 1996-08-07
CN1108277C (zh) 2003-05-14
SE9500216L (sv) 1996-07-20
SE9500216D0 (sv) 1995-01-19
WO1996022251A1 (en) 1996-07-25
EP0871590A1 (en) 1998-10-21
EP0871590B1 (en) 2001-12-05
AU4500096A (en) 1996-08-07
CN1169133A (zh) 1997-12-31
PL181379B1 (pl) 2001-07-31
PL321471A1 (en) 1997-12-08
FI973058A0 (sv) 1997-07-18
US6017449A (en) 2000-01-25
EE9700161A (et) 1998-02-16
CA2211002A1 (en) 1996-07-25
JPH10512489A (ja) 1998-12-02
MX9705429A (es) 1998-06-30

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