SE7900866L - PROCEDURE FOR SECOND TREATMENT OF WASTEWATER - Google Patents

PROCEDURE FOR SECOND TREATMENT OF WASTEWATER

Info

Publication number
SE7900866L
SE7900866L SE7900866A SE7900866A SE7900866L SE 7900866 L SE7900866 L SE 7900866L SE 7900866 A SE7900866 A SE 7900866A SE 7900866 A SE7900866 A SE 7900866A SE 7900866 L SE7900866 L SE 7900866L
Authority
SE
Sweden
Prior art keywords
wastewater
treatment
suspended solids
ratio
procedure
Prior art date
Application number
SE7900866A
Other languages
Unknown language ( )
Swedish (sv)
Inventor
D E Severeid
D D Jech
Original Assignee
Itt
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 Itt filed Critical Itt
Publication of SE7900866L publication Critical patent/SE7900866L/en

Links

Classifications

    • 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
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Microbiology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Activated Sludge Processes (AREA)
  • Physical Water Treatments (AREA)
  • Biological Treatment Of Waste Water (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)

Abstract

A process for the treatment of wastewater comprising aerating wastewater containing bacteria until the BOD level of the wastewater is substantially reduced, the food-to- microorganism ratio (F/M) of the wastewater being greater than one, introducing the aerated wastewater under pressure to a dissolved air flotation cell to separate suspended solids, recycling said suspended solids and bacteria to said aeration step in an amount sufficient to maintain said F/M ratio and removing and disposing of the remaining reduced BOD level wastewater. <IMAGE>
SE7900866A 1978-02-06 1979-02-01 PROCEDURE FOR SECOND TREATMENT OF WASTEWATER SE7900866L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US87532778A 1978-02-06 1978-02-06

Publications (1)

Publication Number Publication Date
SE7900866L true SE7900866L (en) 1979-08-07

Family

ID=25365605

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7900866A SE7900866L (en) 1978-02-06 1979-02-01 PROCEDURE FOR SECOND TREATMENT OF WASTEWATER

Country Status (7)

Country Link
JP (1) JPS54113962A (en)
CA (1) CA1117669A (en)
DE (1) DE2903548A1 (en)
FI (1) FI790165A (en)
FR (1) FR2416199A1 (en)
GB (1) GB2013646B (en)
SE (1) SE7900866L (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3028336C2 (en) * 1980-07-25 1985-08-01 Wilhelm Roediger Gmbh + Co, 6450 Hanau Process for the biological purification of waste water
US4452699A (en) * 1981-05-07 1984-06-05 Shinryo Air Conditioning Co., Ltd. Method of improving the SVI of mixed liquor in aeration tank
SE443930B (en) * 1981-05-08 1986-03-17 Flaekt Ab DEVICE FOR PURIFICATION OF POLLUTANEATED AIR FROM A SPRAYBOX WITH A BIOLOGICAL DEGRADATION
NL8204829A (en) * 1982-12-14 1984-07-02 Schneider & Schuurman METHOD AND APPARATUS FOR PURIFICATION OF WASTE WATER.
JPS6078696A (en) * 1983-10-04 1985-05-04 Shinryo Air Conditioning Co Ltd Svi improvement of liquid mixture in aeration tank
GB8607854D0 (en) * 1986-03-27 1986-04-30 Cjb Developments Ltd Gas flotation system
FR2700323B1 (en) * 1993-01-14 1995-03-31 Cee Qua Bio Method of biological water treatment and device implementing the method.
DE19848346C2 (en) * 1998-10-21 2001-09-13 Mueller Blanke Norbert Flotation process for the retention of biomass-forming microorganisms suspended in water in a basin
WO2010058434A1 (en) * 2008-11-24 2010-05-27 Hawk Partners Sas Vertical rector digestor for biological sludges
BR112020021409A2 (en) * 2018-04-20 2021-01-19 Advanced Biological Services, Inc SYSTEM AND METHODS FOR RESIDUAL WATER TREATMENT AND CLASS A SLUDGE SUPPLY
CN110468033B (en) * 2019-08-26 2020-12-08 同济大学 Anaerobic digestion device for strengthening methane production by utilizing self-sustaining air flotation

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1478749A (en) * 1965-04-29 1967-04-28 Purac Ab Process for purifying water by means of a plurality of treatments applied in series
DE2111442A1 (en) * 1970-06-29 1972-01-05 Aquanox Inc Effluent treatment - by high pressure aerobic decomposition
FR2116662A5 (en) * 1970-12-02 1972-07-21 Degremont
US3864246A (en) * 1973-01-24 1975-02-04 Air Prod & Chem Non-bulking activated sludge process
GB1527731A (en) * 1975-04-07 1978-10-11 Ici Ltd Sewage treatment-flotation apparatus
JPS51139173A (en) * 1975-05-27 1976-12-01 Nitto Chem Ind Co Ltd Activated sludge treatment

Also Published As

Publication number Publication date
JPS54113962A (en) 1979-09-05
GB2013646A (en) 1979-08-15
FI790165A (en) 1979-08-07
GB2013646B (en) 1982-07-21
FR2416199A1 (en) 1979-08-31
CA1117669A (en) 1982-02-02
FR2416199B1 (en) 1984-10-26
DE2903548A1 (en) 1979-08-09

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