GB1348658A - Method of treating waste water - Google Patents

Method of treating waste water

Info

Publication number
GB1348658A
GB1348658A GB3159371A GB3159371A GB1348658A GB 1348658 A GB1348658 A GB 1348658A GB 3159371 A GB3159371 A GB 3159371A GB 3159371 A GB3159371 A GB 3159371A GB 1348658 A GB1348658 A GB 1348658A
Authority
GB
United Kingdom
Prior art keywords
zone
gas
oxygen
water
ozone
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
GB3159371A
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.)
Union Carbide Corp
Original Assignee
Union Carbide Corp
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 Union Carbide Corp filed Critical Union Carbide Corp
Publication of GB1348658A publication Critical patent/GB1348658A/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
    • C02F3/26—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
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
    • 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)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Treatment Of Sludge (AREA)

Abstract

1348658 Treating sewage UNION OARBIDE CORP 6 July 1971 [7 July 1970 17 May 1971] 31593/71 Heading C1C In an apparatus for oxygenating and ozonating waste water (e.g. municipal sewage) the waste water from line 13 is mixed in compartments 12a-12d of zone 11 with activated sludge from line 15 and oxygen-rich gas from line 14, waste gas is discharged from zone 11 through'line 17, oxygenated liquor is discharged from zone 11 into clarifier 19 to separate sludge from oxygenated water, at least part of the sludge is returned to zone 11, the oxygenated water is treated with ozone and oxygen gas in zone 29 to disinfect or sterilize the water and at least part of the spent gas from zone 29 is passed to zone 11. The ozone and oxygen gas contains 0À5-4% by vol. ozone, the spent gas from zone 29 contains at least 60% by vol. oxygen and the waste gas from zone 11 contains 20-70% by vol. oxygen, the oxygen therein amounting to no more than 40% by vol. oxygen fed to zones 11 and 29. The gas fed from source 25 to ozone generator comprises at least 75% by vol. oxygen. The water and ozone and oxygen gas are mixed for 2À5-20 mins. to dissolve at least 2 parts ozone per 10<SP>6</SP> parts water. The disinfected water contains 10-60 p.p.m. higher dissolved oxygen content than the oxygenated water from the clarifier. Gas direct from source 25 may be used to supplement the spent gas sent to zone 11. In an embodiment (not shown) the sludge from the clarifier may be treated with spent gas from the ozonation zone, prior to being returned to zone 11. The apparatus may comprise means for controlling the amount of ozone produced by the generator in relation to the water flow rate, means for controlling the proportion of ozone in the gas fed to the ozonation zone and means for sensing the dissolved oxygen content in the purified water.
GB3159371A 1970-07-07 1971-07-06 Method of treating waste water Expired GB1348658A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US5291670A 1970-07-07 1970-07-07
US14424371A 1971-05-17 1971-05-17

Publications (1)

Publication Number Publication Date
GB1348658A true GB1348658A (en) 1974-03-20

Family

ID=26731243

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3159371A Expired GB1348658A (en) 1970-07-07 1971-07-06 Method of treating waste water

Country Status (7)

Country Link
JP (1) JPS5213032B1 (en)
AT (1) AT306656B (en)
BE (1) BE769577A (en)
CA (1) CA942438A (en)
DE (1) DE2133563C3 (en)
FR (1) FR2100321A5 (en)
GB (1) GB1348658A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE33177E (en) * 1980-09-29 1990-03-06 Water Pollution Control Corporation In place gas cleaning of diffusion elements
WO2013082467A3 (en) * 2011-12-01 2013-12-27 Praxair Technology, Inc. Method and system for ozone vent gas reuse in wastewater treatment

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2556328C2 (en) * 1975-12-13 1982-06-03 Hoechst Ag Water treatment method
DE2749265A1 (en) * 1977-11-03 1979-05-10 Linde Ag METHOD FOR BIOLOGICAL WASTE WATER TREATMENT
FR2490208A1 (en) * 1980-09-15 1982-03-19 Trailigaz WASTEWATER TREATMENT PROCESS USING ACTIVATED SLUDGE
DE3046707A1 (en) * 1980-12-11 1982-07-15 Linde Ag, 6200 Wiesbaden METHOD FOR TREATING RAW WATER
FR2758813B1 (en) * 1997-01-28 1999-04-30 Ozonia Int Sa METHOD AND DEVICE FOR RECOVERING VENT GAS FROM AN OZONATION REACTOR

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3356609A (en) * 1966-05-03 1967-12-05 United Carbide Corp Aerobic treatment of sewage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE33177E (en) * 1980-09-29 1990-03-06 Water Pollution Control Corporation In place gas cleaning of diffusion elements
WO2013082467A3 (en) * 2011-12-01 2013-12-27 Praxair Technology, Inc. Method and system for ozone vent gas reuse in wastewater treatment

Also Published As

Publication number Publication date
CA942438A (en) 1974-02-19
JPS5213032B1 (en) 1977-04-11
DE2133563C3 (en) 1979-05-10
BE769577A (en) 1972-01-06
FR2100321A5 (en) 1972-03-17
DE2133563B2 (en) 1978-09-14
DE2133563A1 (en) 1972-01-20
AT306656B (en) 1973-04-25

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Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee