GB1346467A - Biotreatment of supernatant liquors - Google Patents

Biotreatment of supernatant liquors

Info

Publication number
GB1346467A
GB1346467A GB1995471A GB1995471A GB1346467A GB 1346467 A GB1346467 A GB 1346467A GB 1995471 A GB1995471 A GB 1995471A GB 1995471 A GB1995471 A GB 1995471A GB 1346467 A GB1346467 A GB 1346467A
Authority
GB
United Kingdom
Prior art keywords
sludge
liquor
aeration vessel
june
thermally conditioned
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
GB1995471A
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.)
STWB Inc
Original Assignee
Sterling Drug 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 US4807070A priority Critical
Application filed by Sterling Drug Inc filed Critical Sterling Drug Inc
Publication of GB1346467A publication Critical patent/GB1346467A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/02Aerobic processes
    • C02F3/12Activated sludge processes
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Abstract

1346467 Treating waste liquor STERLING DRUG Inc 10 June 1971 [22 June 1970] 19954/71 Heading C1C A process for treating a liquor obtained by dewatering a thermally conditioned sludge, in a system comprises feeding the liquor at a rate between 1 and 5 kg. BOD 5 per day per kg. mixed liquor solids through an aeration vessel containing activated sludge, where it is agitated for at least two hours with oxygen-containing gas (e.g. air) at 25-40‹ C., to a settling tank, recycling settled sludge to the aeration vessel and removing sludge from the system at approximately the same rate as it is accumulated in the aeration vessel. The sludge concentration in the aeration vessel is kept approximately constant. Monobasic potassium phosphate may be added to the aeration vessel. The liquor may be heated by passing in indirect heat exchange with thermally conditioned sludge or by an electric heater or steam coils associated with the aeration vessel. The liquor may be obtained from a heat treated or wet air oxidized sludge.
GB1995471A 1970-06-22 1971-06-10 Biotreatment of supernatant liquors Expired GB1346467A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US4807070A true 1970-06-22 1970-06-22

Publications (1)

Publication Number Publication Date
GB1346467A true GB1346467A (en) 1974-02-13

Family

ID=21952582

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1995471A Expired GB1346467A (en) 1970-06-22 1971-06-10 Biotreatment of supernatant liquors

Country Status (11)

Country Link
JP (1) JPS55118B1 (en)
CA (1) CA954241A (en)
CH (1) CH548956A (en)
DE (1) DE2130922C2 (en)
ES (1) ES392488A1 (en)
FR (1) FR2099799A5 (en)
GB (1) GB1346467A (en)
IL (1) IL37067A (en)
NL (1) NL175286C (en)
SE (1) SE378587B (en)
ZA (2) ZA7103967B (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3359200A (en) * 1966-02-24 1967-12-19 Sterling Drug Inc Partial wet air oxidation of sewage sludge
US3607737A (en) * 1968-09-18 1971-09-21 Stenberg Flygt Ab Method and apparatus for the aerobic purification of sewage water at a temperature higher than the ambient temperature

Also Published As

Publication number Publication date
ES392488A1 (en) 1973-07-16
SE378587B (en) 1975-09-08
ZA7103967B (en) 1972-02-23
DE2130922A1 (en) 1971-12-30
DE2130922C2 (en) 1982-07-15
NL7108527A (en) 1971-12-24
NL175286C (en) 1984-10-16
IL37067D0 (en) 1971-08-25
IL37067A (en) 1975-02-10
FR2099799A5 (en) 1972-03-17
CA954241A (en) 1974-09-03
CA954241A1 (en)
ZA713967B (en) 1972-02-23
CH548956A (en) 1974-05-15
JPS55118B1 (en) 1980-01-05

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Legal Events

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