GB2011369A - Treatment of Aqueous Waste Material - Google Patents

Treatment of Aqueous Waste Material

Info

Publication number
GB2011369A
GB2011369A GB7845441A GB7845441A GB2011369A GB 2011369 A GB2011369 A GB 2011369A GB 7845441 A GB7845441 A GB 7845441A GB 7845441 A GB7845441 A GB 7845441A GB 2011369 A GB2011369 A GB 2011369A
Authority
GB
United Kingdom
Prior art keywords
liquid
waste material
aqueous waste
vessel
pipe
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
GB7845441A
Other versions
GB2011369B (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.)
BOC Ltd
Original Assignee
BOC Ltd
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 BOC Ltd filed Critical BOC Ltd
Priority to GB7845441A priority Critical patent/GB2011369B/en
Publication of GB2011369A publication Critical patent/GB2011369A/en
Application granted granted Critical
Publication of GB2011369B publication Critical patent/GB2011369B/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
    • C02F3/1278—Provisions for mixing or aeration of the mixed liquor
    • C02F3/1294—"Venturi" aeration means
    • 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
    • C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
    • 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
    • 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
    • C02F3/30—Aerobic and anaerobic processes
    • C02F3/302—Nitrification and denitrification treatment
    • 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)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)

Abstract

Nitrified aqueous waste material containing activated sludge is mixed with aqueous waste material which has yet to be so treated. The nitrates in the aqueous material are reduced to nitrogen by anoxic denitrifying bacteria. Nitrogen is extracted from resultant denitrified liquor. This is then oxygenated and subjected to an activated sludge nitrifying treatment. Incoming aqueous waste material entering through pipe 2 is mixed with nitrified activated sludge-containing from pipe 42. The resultant mixture is subjected to anoxic treatment by denitrifying bacteria in a closed tank 10. Nitrogen formed as a result is stripped from the liquid by the action of vacuum pump 26 as the liquid is siphoned into a vessel 38 in which it is treated by aerobic nitrifying bacteria. (The liquid being siphoned is oxygenated in the lower leg 20 of the siphon). Clear liquid is run off from the vessel 38 over weir 40. Liquid containing sludge is withdrawn from the vessel 38 through pipe 42. <IMAGE>
GB7845441A 1977-09-12 1978-11-21 Treatment of aqueous waste material Expired GB2011369B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7845441A GB2011369B (en) 1977-09-12 1978-11-21 Treatment of aqueous waste material

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB3797677 1977-09-12
GB7845441A GB2011369B (en) 1977-09-12 1978-11-21 Treatment of aqueous waste material

Publications (2)

Publication Number Publication Date
GB2011369A true GB2011369A (en) 1979-07-11
GB2011369B GB2011369B (en) 1982-03-10

Family

ID=26263653

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7845441A Expired GB2011369B (en) 1977-09-12 1978-11-21 Treatment of aqueous waste material

Country Status (1)

Country Link
GB (1) GB2011369B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2194228A (en) * 1986-06-20 1988-03-02 Boc Group Plc Oxygenation method and apparatus
US5512217A (en) * 1992-07-09 1996-04-30 Technological Resources Pty. Limited Reactor and method of use

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2194228A (en) * 1986-06-20 1988-03-02 Boc Group Plc Oxygenation method and apparatus
GB2194228B (en) * 1986-06-20 1991-02-13 Boc Group Plc Fermentation apparatus and method
US5512217A (en) * 1992-07-09 1996-04-30 Technological Resources Pty. Limited Reactor and method of use

Also Published As

Publication number Publication date
GB2011369B (en) 1982-03-10

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Legal Events

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