GB2013646A - Process for the Secondary Treatment of Wastewater - Google Patents

Process for the Secondary Treatment of Wastewater

Info

Publication number
GB2013646A
GB2013646A GB7903226A GB7903226A GB2013646A GB 2013646 A GB2013646 A GB 2013646A GB 7903226 A GB7903226 A GB 7903226A GB 7903226 A GB7903226 A GB 7903226A GB 2013646 A GB2013646 A GB 2013646A
Authority
GB
United Kingdom
Prior art keywords
wastewater
suspended solids
ratio
secondary treatment
bod level
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.)
Granted
Application number
GB7903226A
Other versions
GB2013646B (en
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.)
TDK Micronas GmbH
ITT Inc
Original Assignee
Deutsche ITT Industries GmbH
ITT Industries 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 Deutsche ITT Industries GmbH, ITT Industries Inc filed Critical Deutsche ITT Industries GmbH
Publication of GB2013646A publication Critical patent/GB2013646A/en
Application granted granted Critical
Publication of GB2013646B publication Critical patent/GB2013646B/en
Expired legal-status Critical Current

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

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>
GB7903226A 1978-02-06 1979-01-30 Process for the secondary treatment of waste water Expired GB2013646B (en)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
GB2013646A true GB2013646A (en) 1979-08-15
GB2013646B GB2013646B (en) 1982-07-21

Family

ID=25365605

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7903226A Expired GB2013646B (en) 1978-02-06 1979-01-30 Process for the secondary treatment of waste water

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)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0064960A1 (en) * 1981-05-08 1982-11-17 Fläkt Aktiebolag A plant for purifying contaminated air
EP0111379A1 (en) * 1982-12-14 1984-06-20 Ingenieursbureau Schneider &amp; Schuurman B.V. A method of, and apparatus for, purifying waste water
EP0241167A1 (en) * 1986-03-27 1987-10-14 Cjb Developments Limited Process and apparatus for the separation of foreign matter from a liquid by flotation
FR2700323A1 (en) * 1993-01-14 1994-07-13 Cee Qua Bio Method of biological water treatment and device implementing the method.
WO2010058434A1 (en) * 2008-11-24 2010-05-27 Hawk Partners Sas Vertical rector digestor for biological sludges
CN110468033A (en) * 2019-08-26 2019-11-19 同济大学 Strengthen the anaerobic digestion device for producing biogas using self-holding air bearing
CN112243428A (en) * 2018-04-20 2021-01-19 先进生物服务股份有限公司 System and method for treating wastewater and providing class A sludge

Families Citing this family (4)

* 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
JPS6078696A (en) * 1983-10-04 1985-05-04 Shinryo Air Conditioning Co Ltd Svi improvement of liquid mixture in aeration tank
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

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

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0064960A1 (en) * 1981-05-08 1982-11-17 Fläkt Aktiebolag A plant for purifying contaminated air
EP0111379A1 (en) * 1982-12-14 1984-06-20 Ingenieursbureau Schneider &amp; Schuurman B.V. A method of, and apparatus for, purifying waste water
EP0241167A1 (en) * 1986-03-27 1987-10-14 Cjb Developments Limited Process and apparatus for the separation of foreign matter from a liquid by flotation
US4790944A (en) * 1986-03-27 1988-12-13 Cjb Developments Ltd. Process and apparatus for the separation of foreign matter from a liquid by flotation
FR2700323A1 (en) * 1993-01-14 1994-07-13 Cee Qua Bio Method of biological water treatment and device implementing the method.
EP0607096A1 (en) * 1993-01-14 1994-07-20 Arm Biotechnology Process and apparatus for biological treatment of polluted water, sludges and deposits
WO2010058434A1 (en) * 2008-11-24 2010-05-27 Hawk Partners Sas Vertical rector digestor for biological sludges
CN112243428A (en) * 2018-04-20 2021-01-19 先进生物服务股份有限公司 System and method for treating wastewater and providing class A sludge
CN112243428B (en) * 2018-04-20 2023-07-18 先进创新者股份有限公司 System and method for treating wastewater and providing class A sludge
CN110468033A (en) * 2019-08-26 2019-11-19 同济大学 Strengthen the anaerobic digestion device for producing biogas using self-holding air bearing
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
US11618872B2 (en) 2019-08-26 2023-04-04 Tongji University Anaerobic digestion device based on self-sustained air flotation

Also Published As

Publication number Publication date
CA1117669A (en) 1982-02-02
DE2903548A1 (en) 1979-08-09
FI790165A (en) 1979-08-07
JPS54113962A (en) 1979-09-05
GB2013646B (en) 1982-07-21
SE7900866L (en) 1979-08-07
FR2416199B1 (en) 1984-10-26
FR2416199A1 (en) 1979-08-31

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Legal Events

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

Effective date: 19950130