GB1482625A - Treatment of aqueous material having a biochemical oxygen demand - Google Patents

Treatment of aqueous material having a biochemical oxygen demand

Info

Publication number
GB1482625A
GB1482625A GB3958073A GB3958073A GB1482625A GB 1482625 A GB1482625 A GB 1482625A GB 3958073 A GB3958073 A GB 3958073A GB 3958073 A GB3958073 A GB 3958073A GB 1482625 A GB1482625 A GB 1482625A
Authority
GB
United Kingdom
Prior art keywords
aqueous material
treatment
temperature
oxygen demand
aug
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
GB3958073A
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 Group Ltd
Original Assignee
BOC International 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 International Ltd filed Critical BOC International Ltd
Priority to GB3958073A priority Critical patent/GB1482625A/en
Priority to ZA00745226A priority patent/ZA745226B/en
Priority to AU72401/74A priority patent/AU485164B2/en
Publication of GB1482625A publication Critical patent/GB1482625A/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)

Abstract

1482625 Temperature controlled aeration process BOC INTERNATIONAL Ltd 15 Aug 1974 [15 Aug 1973] 39580/73 Heading C1C Aqueous material having a BOD, may be treated by a process which includes the steps of passing the material (e.g. sewage) into a treatment vessel, aerating or oxygenating, and controlling the temperature of the aqueous material in the vessel so as to keep it at or close to a chosen temperature, wherein incoming aqueous material is heat exchanged with a stream of aqueous material from the treatment tank. Temperatures of 25‹ to 50‹ C. may be used, and heat exchangers may provide additional heating or cooling. The activated sludge process may thus be controlled in this way. The use of substantially pure oxygen is preferred. Apparatus is also described and claimed.
GB3958073A 1973-08-15 1973-08-15 Treatment of aqueous material having a biochemical oxygen demand Expired GB1482625A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB3958073A GB1482625A (en) 1973-08-15 1973-08-15 Treatment of aqueous material having a biochemical oxygen demand
ZA00745226A ZA745226B (en) 1973-08-15 1974-08-14 Treatment of aqueous material
AU72401/74A AU485164B2 (en) 1973-08-15 1974-08-15 Treatment of aqueous material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3958073A GB1482625A (en) 1973-08-15 1973-08-15 Treatment of aqueous material having a biochemical oxygen demand

Publications (1)

Publication Number Publication Date
GB1482625A true GB1482625A (en) 1977-08-10

Family

ID=10410324

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3958073A Expired GB1482625A (en) 1973-08-15 1973-08-15 Treatment of aqueous material having a biochemical oxygen demand

Country Status (2)

Country Link
GB (1) GB1482625A (en)
ZA (1) ZA745226B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2171401A (en) * 1985-02-22 1986-08-28 Ekofinn Oy Heating arrangement for a biological filter intended for the treatment of waste waters
FR2941940A1 (en) * 2009-02-11 2010-08-13 Degremont Treating raw effluent obtained from e.g. urban wastewater, comprises subjecting effluent to two steps of treatment carried out by activated sludge and/or filtration membranes, and transferring heat between raw effluent and treated effluent

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2171401A (en) * 1985-02-22 1986-08-28 Ekofinn Oy Heating arrangement for a biological filter intended for the treatment of waste waters
GB2171401B (en) * 1985-02-22 1989-09-06 Ekofinn Oy Biological filter including a heating arrangement for treatment of waste waters
FR2941940A1 (en) * 2009-02-11 2010-08-13 Degremont Treating raw effluent obtained from e.g. urban wastewater, comprises subjecting effluent to two steps of treatment carried out by activated sludge and/or filtration membranes, and transferring heat between raw effluent and treated effluent

Also Published As

Publication number Publication date
ZA745226B (en) 1976-01-28
AU7240174A (en) 1976-02-19

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Legal Events

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