GB1444026A - Method of clarifying impure water - Google Patents

Method of clarifying impure water

Info

Publication number
GB1444026A
GB1444026A GB3685473A GB3685473A GB1444026A GB 1444026 A GB1444026 A GB 1444026A GB 3685473 A GB3685473 A GB 3685473A GB 3685473 A GB3685473 A GB 3685473A GB 1444026 A GB1444026 A GB 1444026A
Authority
GB
United Kingdom
Prior art keywords
water
gas
chamber
clarifying
treated
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.)
Expired
Application number
GB3685473A
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.)
Water Research Centre
Original Assignee
Water Research Centre
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 Water Research Centre filed Critical Water Research Centre
Priority to GB3685473A priority Critical patent/GB1444026A/en
Publication of GB1444026A publication Critical patent/GB1444026A/en
Expired legal-status Critical Current

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
    • B01F23/40—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
    • B01F25/40—Static mixers
    • B01F25/46—Homogenising or emulsifying nozzles
    • 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
    • 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
    • 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
    • B03D1/1487—Means for cleaning or maintenance
    • 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

Abstract

1444026 Dispersing gases in liquids WATER RESEARCH CENTRE 2 Aug 1973 36854/73 Heading B1C In a method of clarifying floculated impure water by dissolved gas flotation, pressurized gas-saturated water is discharged into the water to be treated through a nozzle comprising a chamber having constricting inlet and outlet orifices so arranged that the gas-saturated water undergoes a substantial change in direction and loss of pressure whereby bubbles are released. As shown the chamber 10 is formed by discs 2, 3 having inlet and outlet orifices 4, 5, the latter being the larger. The reduction in pressure on passage through orifice 4 and the turbulence caused by sticking the walls of the chamber causes gas to come out of solution in the form of fine bubbles. The chamber may discharge through a shroud 12 with the water to be treated. The gas is conveniently air, and the floc may be formed by treatment with an iron or alumimum coagulent.
GB3685473A 1973-08-02 1973-08-02 Method of clarifying impure water Expired GB1444026A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3685473A GB1444026A (en) 1973-08-02 1973-08-02 Method of clarifying impure water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3685473A GB1444026A (en) 1973-08-02 1973-08-02 Method of clarifying impure water

Publications (1)

Publication Number Publication Date
GB1444026A true GB1444026A (en) 1976-07-28

Family

ID=10391718

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3685473A Expired GB1444026A (en) 1973-08-02 1973-08-02 Method of clarifying impure water

Country Status (1)

Country Link
GB (1) GB1444026A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2268089A (en) * 1992-06-25 1994-01-05 Thames Water Utilities Distributing a gas in a liquid
WO1994002252A1 (en) * 1992-07-23 1994-02-03 Hoefer, Dawn, Annette Flotation method
JPH0699167A (en) * 1992-09-17 1994-04-12 Idec Izumi Corp Flotation separation method for floating particles in liquid and device therefor
US7651620B2 (en) * 2003-10-10 2010-01-26 Degremont Pressurised water releasing nozzle for generating microbubbles in a flotation plant
US20120168385A1 (en) * 2009-09-07 2012-07-05 Raymond Anderson Apparatus and Method for the Treatment of Water
CN110127795A (en) * 2019-05-16 2019-08-16 中博投(北京)环境技术有限公司 A kind of air bearing water process high-efficiency dissolued-air release
CN110550719A (en) * 2019-10-08 2019-12-10 上海亮仓能源科技有限公司 Aeration head of hydrogen bath machine

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2268089A (en) * 1992-06-25 1994-01-05 Thames Water Utilities Distributing a gas in a liquid
GB2268089B (en) * 1992-06-25 1996-05-08 Thames Water Utilities A nozzle
WO1994002252A1 (en) * 1992-07-23 1994-02-03 Hoefer, Dawn, Annette Flotation method
JPH0699167A (en) * 1992-09-17 1994-04-12 Idec Izumi Corp Flotation separation method for floating particles in liquid and device therefor
JP2529174B2 (en) * 1992-09-17 1996-08-28 和泉電気株式会社 Method and device for floating separation of suspended particles in liquid
US7651620B2 (en) * 2003-10-10 2010-01-26 Degremont Pressurised water releasing nozzle for generating microbubbles in a flotation plant
US20120168385A1 (en) * 2009-09-07 2012-07-05 Raymond Anderson Apparatus and Method for the Treatment of Water
US9233855B2 (en) * 2009-09-07 2016-01-12 Aerofloat (Holdings) Pty Ltd Apparatus and method for the treatment of water
CN110127795A (en) * 2019-05-16 2019-08-16 中博投(北京)环境技术有限公司 A kind of air bearing water process high-efficiency dissolued-air release
CN110550719A (en) * 2019-10-08 2019-12-10 上海亮仓能源科技有限公司 Aeration head of hydrogen bath machine

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19920802