GB1424801A - Process and system for treating waste water - Google Patents

Process and system for treating waste water

Info

Publication number
GB1424801A
GB1424801A GB285272A GB285272A GB1424801A GB 1424801 A GB1424801 A GB 1424801A GB 285272 A GB285272 A GB 285272A GB 285272 A GB285272 A GB 285272A GB 1424801 A GB1424801 A GB 1424801A
Authority
GB
United Kingdom
Prior art keywords
chamber
oxygen
gas
tank
waste water
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
GB285272A
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.)
Satec Ltd
Air Products and Chemicals Inc
Original Assignee
Satec Ltd
Air Products and Chemicals 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
Priority to BE794121D priority Critical patent/BE794121A/en
Application filed by Satec Ltd, Air Products and Chemicals Inc filed Critical Satec Ltd
Priority to GB285272A priority patent/GB1424801A/en
Priority to DE2301395A priority patent/DE2301395A1/en
Priority to ZA730389A priority patent/ZA73389B/en
Priority to FR7301959A priority patent/FR2168558B1/fr
Priority to NL7300822A priority patent/NL7300822A/xx
Priority to IT4777373A priority patent/IT1013023B/en
Priority to US05/477,526 priority patent/US3960717A/en
Publication of GB1424801A publication Critical patent/GB1424801A/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
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/1205—Particular type of activated sludge processes
    • C02F3/121—Multistep treatment
    • 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
    • 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
    • C02F3/26—Activated sludge processes using pure oxygen or oxygen-rich gas
    • 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)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Activated Sludge Processes (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)

Abstract

1424801 Purifying waste water AIR PRODUCTS & CHEMICALS Inc and SATEC Ltd 19 Jan 1973 [20 Jan 1972] 2852/72 Heading C1C In a process for purifying waste water, the water is treated to reduce its dissolved nitrogen content and then aerated with oxygen-enriched gas. In Fig. 4 waste water is pretreated in tank 54c with oxygen-enriched gas exhausted from aeration chamber 12c to strip dissolved nitrogen therefrom. The pretreated water is mixed with activated sludge in enclosed aeration chamber 12c and aerated by substantially pure oxygen introduced through inlet 26c. The mixed liquor is further aerated in a chamber open to the atmosphere and then clarified in settler 42c. The activated sludge to be returned to aeration chamber 12c is treated in tank 100c with gas exhausted from chamber 12c to strip nitrogen therefrom. The gas exhausted from chamber 12c may be analysed for its oxygen content by analyser 39c so that gas is exhausted only when the oxygen content thereof is above a predetermined minimum. The tanks 54c + 100c may receive oxygen-enriched gas from any of the subzones of chamber 12c or from another independent source. In another embodiment the gas above the liquid in tank 54c may be withdrawn by a pump and bubbled through the liquid in tank 54c.
GB285272A 1972-01-20 1972-01-20 Process and system for treating waste water Expired GB1424801A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
BE794121D BE794121A (en) 1972-01-20 WASTEWATER
GB285272A GB1424801A (en) 1972-01-20 1972-01-20 Process and system for treating waste water
DE2301395A DE2301395A1 (en) 1972-01-20 1973-01-12 METHOD AND DEVICE FOR TREATMENT OF WASTE WATER
ZA730389A ZA73389B (en) 1972-01-20 1973-01-19 A process and system for treating waste water
FR7301959A FR2168558B1 (en) 1972-01-20 1973-01-19
NL7300822A NL7300822A (en) 1972-01-20 1973-01-19
IT4777373A IT1013023B (en) 1972-01-20 1973-01-19 PROCEDURE AND EQUIPMENT FOR THE TREATMENT OF WASTE WATER
US05/477,526 US3960717A (en) 1972-01-20 1974-06-07 Process for treating waste water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB285272A GB1424801A (en) 1972-01-20 1972-01-20 Process and system for treating waste water

Publications (1)

Publication Number Publication Date
GB1424801A true GB1424801A (en) 1976-02-11

Family

ID=9747184

Family Applications (1)

Application Number Title Priority Date Filing Date
GB285272A Expired GB1424801A (en) 1972-01-20 1972-01-20 Process and system for treating waste water

Country Status (7)

Country Link
BE (1) BE794121A (en)
DE (1) DE2301395A1 (en)
FR (1) FR2168558B1 (en)
GB (1) GB1424801A (en)
IT (1) IT1013023B (en)
NL (1) NL7300822A (en)
ZA (1) ZA73389B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006083522A1 (en) * 2005-01-13 2006-08-10 Proline Wastewater Equipment, L.L.C. Aerobic wastewater management system, apparatus, and method

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54136755A (en) * 1978-04-15 1979-10-24 Osaka Gas Co Ltd Active sludge disposal process for waste water
DE3131989A1 (en) * 1981-08-13 1983-02-24 Linde Ag, 6200 Wiesbaden METHOD AND DEVICE FOR BIOLOGICAL WASTE WATER TREATMENT
DK1445239T3 (en) * 2003-02-07 2005-10-17 Delphin Umwelttechnik Gmbh Process for influencing sludge volume index to avoid float sludge in a wastewater treatment plant
CN106587336A (en) * 2015-10-15 2017-04-26 圣堃环保科技（上海）有限公司 Sewage treatment apparatus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3607735A (en) * 1969-07-02 1971-09-21 Air Reduction System for treatment of secondary sewage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006083522A1 (en) * 2005-01-13 2006-08-10 Proline Wastewater Equipment, L.L.C. Aerobic wastewater management system, apparatus, and method

Also Published As

Publication number Publication date
NL7300822A (en) 1973-07-24
IT1013023B (en) 1977-03-30
FR2168558B1 (en) 1979-01-26
ZA73389B (en) 1974-03-27
BE794121A (en) 1973-07-16
FR2168558A1 (en) 1973-08-31
DE2301395A1 (en) 1973-07-26

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Legal Events

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