GB2356860B - Flotation system and elements relative thereto - Google Patents

Flotation system and elements relative thereto

Info

Publication number
GB2356860B
GB2356860B GB0019939A GB0019939A GB2356860B GB 2356860 B GB2356860 B GB 2356860B GB 0019939 A GB0019939 A GB 0019939A GB 0019939 A GB0019939 A GB 0019939A GB 2356860 B GB2356860 B GB 2356860B
Authority
GB
United Kingdom
Prior art keywords
liquid
flotation
dissolved air
filter bed
remotely
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 - Fee Related
Application number
GB0019939A
Other versions
GB0019939D0 (en
GB2356860A (en
Inventor
Peter Inatius Swan
Richard Pierpont Moore
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB0327009A priority Critical patent/GB2392152B/en
Publication of GB0019939D0 publication Critical patent/GB0019939D0/en
Publication of GB2356860A publication Critical patent/GB2356860A/en
Application granted granted Critical
Publication of GB2356860B publication Critical patent/GB2356860B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION 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
    • B03DFLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00Flotation
    • B03D1/14Flotation machines
    • B03D1/1431Dissolved air flotation machines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D21/00Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0012Settling tanks making use of filters, e.g. by floating layers of particulate material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION 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
    • B03BSEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B11/00Feed or discharge devices integral with washing or wet-separating equipment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION 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
    • B03BSEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B13/00Control arrangements specially adapted for wet-separating apparatus or for dressing plant, using physical effects
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION 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
    • B03DFLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00Flotation
    • B03D1/02Froth-flotation processes
    • B03D1/028Control and monitoring of flotation processes; computer models therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION 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
    • B03DFLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00Flotation
    • B03D1/14Flotation machines
    • B03D1/1412Flotation machines with baffles, e.g. at the wall for redirecting settling solids
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION 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
    • B03DFLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00Flotation
    • B03D1/14Flotation machines
    • B03D1/1443Feed or discharge mechanisms for flotation tanks
    • B03D1/1456Feed mechanisms for the slurry
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION 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
    • B03DFLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00Flotation
    • B03D1/14Flotation machines
    • B03D1/1443Feed or discharge mechanisms for flotation tanks
    • B03D1/1462Discharge mechanisms for the froth
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION 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
    • B03DFLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00Flotation
    • B03D1/14Flotation machines
    • B03D1/24Pneumatic
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/24Treatment of water, waste water, or sewage by flotation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION 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
    • B03BSEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B11/00Feed or discharge devices integral with washing or wet-separating equipment
    • B03B2011/006Scraper dischargers
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/16Regeneration of sorbents, filters

Abstract

A method of purifying a liquid by dissolved air flotation (DAF) in which a liquid, saturated with dissolved air under pressure is released directly into the liquid to be treated vis at least one injection nozzle 4, in which the degree of opening of the nozzle 4 may be remotely varied, thereby providing the facility to remotely adjust the pressure of the air solutionised liquid. Also disclosed is means to combine flotation and filtration wherein the impurities in the water rise to the surface of the liquid due to the flotation process, and the liquid flows over the top 35 of a division wall into a body of liquid 33 above the top 9 of a filter bed. The liquid may then pass through the filter bed 2 into a filter distribution and collecting system 3. A coagulant may be used. A method of removing the accumulated float from dissolved air purification systems by using wipers is also claimed.
GB0019939A 1999-08-16 2000-08-15 Flotation system and elements relative thereto Expired - Fee Related GB2356860B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0327009A GB2392152B (en) 1999-08-16 2000-08-15 Flotation filtration

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA995192 1999-08-16

Publications (3)

Publication Number Publication Date
GB0019939D0 GB0019939D0 (en) 2000-09-27
GB2356860A GB2356860A (en) 2001-06-06
GB2356860B true GB2356860B (en) 2004-06-16

Family

ID=25587849

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0019939A Expired - Fee Related GB2356860B (en) 1999-08-16 2000-08-15 Flotation system and elements relative thereto

Country Status (1)

Country Link
GB (1) GB2356860B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110899002A (en) * 2019-11-06 2020-03-24 太原理工大学 Chain type adjustable scraper of flotation machine
US11008227B2 (en) 2019-07-29 2021-05-18 Eco Water Technologies Corp Wastewater purification system
CN113480039A (en) * 2021-07-15 2021-10-08 朱文卿 Oil-water separation device and separation method

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT410406B (en) * 2001-09-17 2003-04-25 Andritz Ag Maschf METHOD AND DEVICE FOR VENTILATING A LIQUID WITH GAS
WO2008067702A1 (en) * 2006-12-08 2008-06-12 Bin Li Ore slurry cyclonic flotation method, cyclone flotation column and flotation apparatus therefor
EP2118020B1 (en) * 2007-02-14 2011-10-05 Battelle Memorial Institute Water purification
US8585903B2 (en) 2007-02-14 2013-11-19 Winner Water Services, Inc. Water purification
FI126360B (en) * 2012-11-23 2016-10-31 Ferroplan Oy Water treatment method and device
CN109453738A (en) * 2018-12-12 2019-03-12 江苏楚锐环保科技有限公司 Hydrophobic zeolite molecular sieve honeycomb body manufacturing method and its dedicated manufacturing equipment
CN112875915A (en) * 2021-01-13 2021-06-01 张振经 Domestic sewage treatment device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5139663A (en) * 1991-03-14 1992-08-18 Microlift Systems Limited Partnership Discharge valve for dissolved air flotation

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5139663A (en) * 1991-03-14 1992-08-18 Microlift Systems Limited Partnership Discharge valve for dissolved air flotation

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11008227B2 (en) 2019-07-29 2021-05-18 Eco Water Technologies Corp Wastewater purification system
US11084737B1 (en) 2019-07-29 2021-08-10 Eco World Water Corp. System for treating wastewater and the like
CN110899002A (en) * 2019-11-06 2020-03-24 太原理工大学 Chain type adjustable scraper of flotation machine
CN113480039A (en) * 2021-07-15 2021-10-08 朱文卿 Oil-water separation device and separation method

Also Published As

Publication number Publication date
GB0019939D0 (en) 2000-09-27
GB2356860A (en) 2001-06-06

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20050815