DE69735165D1 - Dreizonenvorrichtung zur reinigung durch flotation mit gelöster luft mit verbessertem wirkungsgrad - Google Patents

Dreizonenvorrichtung zur reinigung durch flotation mit gelöster luft mit verbessertem wirkungsgrad

Info

Publication number
DE69735165D1
DE69735165D1 DE69735165T DE69735165T DE69735165D1 DE 69735165 D1 DE69735165 D1 DE 69735165D1 DE 69735165 T DE69735165 T DE 69735165T DE 69735165 T DE69735165 T DE 69735165T DE 69735165 D1 DE69735165 D1 DE 69735165D1
Authority
DE
Germany
Prior art keywords
clarification
tank
layer
sludge
clarifier
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 - Lifetime
Application number
DE69735165T
Other languages
English (en)
Other versions
DE69735165T2 (de
Inventor
Milos Krofta
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.)
Lenox Institute of Water Technology Inc
Original Assignee
Lenox Institute of Water Technology Inc
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 Lenox Institute of Water Technology Inc filed Critical Lenox Institute of Water Technology Inc
Publication of DE69735165D1 publication Critical patent/DE69735165D1/de
Application granted granted Critical
Publication of DE69735165T2 publication Critical patent/DE69735165T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/0205—Separation of non-miscible liquids by gas bubbles or moving solids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0027—Floating sedimentation devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
    • B01D21/0045—Plurality of essentially parallel plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/01—Separation of suspended solid particles from liquids by sedimentation using flocculating agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/02—Settling tanks with single outlets for the separated liquid
    • B01D21/08—Settling tanks with single outlets for the separated liquid provided with flocculating compartments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/18—Construction of the scrapers or the driving mechanisms for settling tanks
    • B01D21/20—Driving mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2405—Feed mechanisms for settling tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2427—The feed or discharge opening located at a distant position from the side walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2433—Discharge mechanisms for floating particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2444—Discharge mechanisms for the classified liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2488—Feed or discharge mechanisms for settling tanks bringing about a partial recirculation of the liquid, e.g. for introducing chemical aids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/30—Control equipment
    • B01D21/34—Controlling the feed distribution; Controlling the liquid level ; Control of process parameters
    • 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
    • B03D1/1481—Flotation machines with a plurality of parallel plates
    • 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
    • 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
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Biotechnology (AREA)
  • Hydrology & Water Resources (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Physical Water Treatments (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Hydroponics (AREA)
  • Cleaning In General (AREA)
  • Treatment Of Fiber Materials (AREA)
DE69735165T 1996-04-26 1997-04-25 Dreizonenvorrichtung zur reinigung durch flotation mit gelöster luft mit verbessertem wirkungsgrad Expired - Lifetime DE69735165T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/638,116 US5846413A (en) 1996-04-26 1996-04-26 Three zone dissolved air flotation clarifier with improved efficiency
US638116 1996-04-26
PCT/US1997/006975 WO1997041067A1 (en) 1996-04-26 1997-04-25 Three zone dissolved air flotation clarifier with improved efficiency

Publications (2)

Publication Number Publication Date
DE69735165D1 true DE69735165D1 (de) 2006-04-13
DE69735165T2 DE69735165T2 (de) 2006-09-28

Family

ID=24558708

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69735165T Expired - Lifetime DE69735165T2 (de) 1996-04-26 1997-04-25 Dreizonenvorrichtung zur reinigung durch flotation mit gelöster luft mit verbessertem wirkungsgrad

Country Status (9)

Country Link
US (2) US5846413A (de)
EP (1) EP0971856B1 (de)
AT (1) ATE316513T1 (de)
AU (1) AU2992197A (de)
DE (1) DE69735165T2 (de)
DK (1) DK0971856T3 (de)
ES (1) ES2258792T3 (de)
HK (1) HK1026683A1 (de)
WO (1) WO1997041067A1 (de)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6174434B1 (en) * 1996-04-26 2001-01-16 The Lenox Institute Of Water Technology, Inc. Three zone dissolved air floatation clarifier with fixed lamellae and improved paddle-and-ramp sludge removal system
US6126815A (en) * 1999-07-19 2000-10-03 Kelada; Maher I. Sequential air dissolved floatation apparatus and methods
US6890431B1 (en) 2000-02-18 2005-05-10 The F. B. Leopold Co., Inc. Buoyant media flotation
US6406624B1 (en) 2000-11-20 2002-06-18 Devos Jerry J. Flocculation apparatus and apparatus for floating upwardly in a liquid and for moving downwardly in the liquid under the influence of gravity
US6893572B2 (en) * 2001-07-12 2005-05-17 Western Environmental Engineering Company Solids accumulating flotation separator
US20050109691A1 (en) * 2003-11-25 2005-05-26 Suikenkikou Co., Ltd. Bubble filter system in water
US20070114182A1 (en) * 2005-11-18 2007-05-24 Hydroxyl Systems Inc. Wastewater treatment system for a marine vessel
US20090032446A1 (en) * 2007-08-01 2009-02-05 Triwatech, L.L.C. Mobile station and methods for diagnosing and modeling site specific effluent treatment facility requirements
US8114296B2 (en) * 2009-04-23 2012-02-14 Fang Chao Method and apparatus for skimming floated sludge
US8303812B2 (en) 2009-04-23 2012-11-06 Fang Chao Method and apparatus for skimming floated sludge
US8404121B2 (en) * 2009-08-11 2013-03-26 Anaergia Inc. Method for separating suspended solids from a waste fluid
US8585892B2 (en) * 2010-01-13 2013-11-19 Biofilter Systems, Llc System and process for removing nitrogen compounds and odors from wastewater and wastewater treatment system
US9272931B2 (en) 2010-01-13 2016-03-01 Biofilter Systems, Llc System and process for removing nitrogen compounds and odors from wastewater and wastewater treatment system
US8388833B2 (en) 2010-09-23 2013-03-05 Biofilter Systems, Llc System and process for removing nitrogen compounds and odors from wastewater and wastewater treatment system
US8757388B2 (en) * 2010-02-02 2014-06-24 Weyerhaeuser Nr Company Biomass conditioning system and method for conditioning
US20130140218A1 (en) * 2010-02-05 2013-06-06 Glenn S. Dobby Froth flotation and apparatus for same
JP5997975B2 (ja) * 2012-08-24 2016-09-28 水道機工株式会社 フロキュレータ
CN111348693A (zh) * 2018-12-24 2020-06-30 无锡小天鹅电器有限公司 净水底壳、净水盖体、净水器和洗衣装置
US20200354241A1 (en) * 2019-05-10 2020-11-12 Sugino Machine Limited Liquid treatment apparatus and liquid treatment method
CN114797188B (zh) * 2022-05-24 2023-11-03 广东环境保护工程职业学院 一种斜板沉淀池
CN115849537A (zh) * 2022-11-23 2023-03-28 苏珊珊 一种含油重金属工业废水的处理工艺

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Publication number Priority date Publication date Assignee Title
US2324400A (en) * 1941-06-21 1943-07-13 Dorr Co Inc Liquid clarification
US2679477A (en) * 1949-09-15 1954-05-25 Process Engineers Inc Sewage treatment
US2695710A (en) * 1949-10-12 1954-11-30 F S Gibbs Inc Flotation and clarification apparatus
LU30634A1 (de) * 1951-03-13
US2713026A (en) * 1951-07-21 1955-07-12 Process Engineers Inc Flotator-clarifier
US2876863A (en) * 1954-07-26 1959-03-10 Process Engineers Inc Treatment of aqueous wastes containing hydrocarbons
US2874842A (en) * 1955-04-05 1959-02-24 Krofta Milos Process and apparatus for waste liquid purification
DE1213223C2 (de) * 1960-02-15 1973-02-01 Milos Krofta Dr Ing Vorrichtung zum Reinigen der ungeklaerten Abwaesser in den Papier-, Zellstoff- und aehnlichen Industrien
US3246763A (en) * 1961-10-23 1966-04-19 Permanent Filter Corp Flotation separator
US3542675A (en) * 1968-07-26 1970-11-24 Combustion Eng Water treatment
JPS511072B1 (de) * 1971-05-24 1976-01-13
US4043912A (en) * 1971-06-28 1977-08-23 Burmah Oil And Gas Company Clarification tank
US4022696A (en) * 1976-03-24 1977-05-10 Milos Krofta Apparatus for clarification of waste water operating on dissolved air flotation process
US4082671A (en) * 1976-09-30 1978-04-04 Envirotech Corporation Sludge thickening apparatus
US4184967A (en) * 1978-06-22 1980-01-22 Lenox Institute For Research, Inc. Apparatus for clarifying waste water
US4377485A (en) * 1981-09-15 1983-03-22 Lenox Institute For Research, Inc. Apparatus and method for clarification of water using combined flotation and filtration processes
US4450072A (en) * 1982-11-17 1984-05-22 Suplicki John C Air flotation cell
US4626345A (en) * 1984-09-04 1986-12-02 Lenox Institute For Research, Inc. Apparatus for clarification of water
SU1340793A1 (ru) * 1986-01-08 1987-09-30 Научно-Исследовательский И Проектный Институт По Обогащению Руд Цветных Металлов "Казмеханобр" Устройство дл очистки жидкостей
SU1565812A1 (ru) * 1988-07-04 1990-05-23 Ленинградское Отделение Государственного Проектного Института "Гипрокоммунводоканал" Флотатор-отстойник и скребковое устройство дл удалени осадка
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US5296149A (en) * 1988-09-07 1994-03-22 Milos Krofta Lamellar apparatus and method for clarifying water
US5268099A (en) * 1988-09-07 1993-12-07 Lenox Institute Of Water Technology, Inc. Lamellar clarifier with rectilinear tank
US5306422A (en) * 1988-09-07 1994-04-26 Lenox Institute Of Water Technology, Inc. Compact clarifier system for municipal waste water treatment
US5320750A (en) * 1988-09-07 1994-06-14 Milos Krofta Water clarifier with first filtrate isolation, improved backwashing and improved bubble generation
US5415771A (en) * 1993-06-29 1995-05-16 The Lenox Institute Of Water Technology, Inc. High capacity single tank water clarification system

Also Published As

Publication number Publication date
EP0971856B1 (de) 2006-01-25
ATE316513T1 (de) 2006-02-15
WO1997041067A1 (en) 1997-11-06
EP0971856A4 (de) 2000-01-26
US5863441A (en) 1999-01-26
ES2258792T3 (es) 2006-09-01
EP0971856A1 (de) 2000-01-19
HK1026683A1 (en) 2000-12-22
US5846413A (en) 1998-12-08
AU2992197A (en) 1997-11-19
DE69735165T2 (de) 2006-09-28
DK0971856T3 (da) 2006-06-06

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