GB1473665A - Treatment of biologically-degradable waste - Google Patents

Treatment of biologically-degradable waste

Info

Publication number
GB1473665A
GB1473665A GB2332873A GB2332873A GB1473665A GB 1473665 A GB1473665 A GB 1473665A GB 2332873 A GB2332873 A GB 2332873A GB 2332873 A GB2332873 A GB 2332873A GB 1473665 A GB1473665 A GB 1473665A
Authority
GB
United Kingdom
Prior art keywords
sewage
downcomer
basin
treatment
partition
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
GB2332873A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB2332873A priority Critical patent/GB1473665A/en
Priority to IN1020/CAL/74A priority patent/IN141354B/en
Priority to SE7406369A priority patent/SE423898B/en
Priority to DE2423085A priority patent/DE2423085A1/en
Priority to AU68894/74A priority patent/AU486562B2/en
Priority to NO741755A priority patent/NO143698C/en
Priority to FR7416893A priority patent/FR2229655B1/fr
Priority to CS743471A priority patent/CS210625B2/en
Priority to NL7406507A priority patent/NL176658C/en
Priority to IT2279174A priority patent/IT1019614B/en
Priority to TR1807074A priority patent/TR18070A/en
Priority to CA200,024A priority patent/CA1033081A/en
Priority to PL1974171090A priority patent/PL109974B1/en
Priority to CH665674A priority patent/CH578367A5/xx
Priority to ES426380A priority patent/ES426380A1/en
Priority to AT406574A priority patent/AT356602B/en
Priority to DD17855574A priority patent/DD113208A5/xx
Priority to BE144419A priority patent/BE815150A/en
Publication of GB1473665A publication Critical patent/GB1473665A/en
Priority to JP16148980A priority patent/JPS56129093A/en
Priority to JP16149080A priority patent/JPS56139198A/en
Priority to US06/213,596 priority patent/US4351730A/en
Priority to US06/386,186 priority patent/US4416781A/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/232—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles
    • B01F23/2323—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles by circulating the flow in guiding constructions or conduits
    • B01F23/23231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles by circulating the flow in guiding constructions or conduits being at least partially immersed in the liquid, e.g. in a closed circuit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/237—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media
    • B01F23/2376—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media characterised by the gas being introduced
    • B01F23/23761—Aerating, i.e. introducing oxygen containing gas in liquids
    • B01F23/237611—Air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/237—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media
    • B01F23/2376—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media characterised by the gas being introduced
    • B01F23/23761—Aerating, i.e. introducing oxygen containing gas in liquids
    • B01F23/237612—Oxygen
    • 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

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • 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)
  • Organic Chemistry (AREA)
  • Biological Treatment Of Waste Water (AREA)

Abstract

1473665 Treatment of sewage IMPERIAL CHEMICAL INDUSTRIES Ltd 23 April 1974 [16 May 1973 21 Nov 1973] 23328/73 and 53921/73 Heading C1C A method for the treatment of sewage comprises a step wherein the sewage is circulated around a system comprising a downcomer and a riser communicating with each other at their upper and lower ends, an oxygen-containing gas being supplied to the sewage as it passes through the downcomer which is of such length that the oxygen transfer rate into the sewage is at least 0À1 kg. O 2 /hr./m.<SP>3</SP> of liquid. This circulation step may form the aeration and/or digestion stage in the secondary treatment of sewage. The sewage may be circulated from a storage basin situated at or below ground level. An apparatus for circulating sewage in the above way is shown in the figure. The riser (15) and downcomer (14) are in this case contained within a single vessel divided by partition (23) and extending into a shaft below the base of basin (13). Downcomer (14) extends below the lower end of partition (23), or alternatively the lower part of partition (23) is perforated, to allow the lower ends of the downcomer and riser to communicate with each other. The downcomer is of such length that the oxygen transfer rate into the sewage is at least 0À1 kg. O 2 /hr./m.<SP>3</SP> of liquid. To achieve a suitable flow pattern in basin (13), the upper end (24) of the downcomer extends above the base of the basin and flow directing means (25) is provided. Other suitable forms of apparatus are also described. Reference has been directed by the Comptroller to Specification 1,353,008.
GB2332873A 1973-05-16 1973-05-16 Treatment of biologically-degradable waste Expired GB1473665A (en)

Priority Applications (22)

Application Number Priority Date Filing Date Title
GB2332873A GB1473665A (en) 1973-05-16 1973-05-16 Treatment of biologically-degradable waste
IN1020/CAL/74A IN141354B (en) 1973-05-16 1974-05-08
SE7406369A SE423898B (en) 1973-05-16 1974-05-13 SET AND DEVICE FOR CONTINUOUS TREATMENT OF WASTE WATER BY THE ACTIVE SLAM METHOD
DE2423085A DE2423085A1 (en) 1973-05-16 1974-05-13 PROCESS AND DEVICE FOR TREATMENT OF LIQUIDS, IN PARTICULAR WASTE WATER WITH BIODEGRADABLE POLLUTION
AU68894/74A AU486562B2 (en) 1973-05-16 1974-05-14 Treatment of biologically-degradable waste
NO741755A NO143698C (en) 1973-05-16 1974-05-14 PROCEDURE AND APPARATUS FOR TREATMENT OF SOURCE WATER
CA200,024A CA1033081A (en) 1973-05-16 1974-05-15 Treatment of biologically-degradable waste
CS743471A CS210625B2 (en) 1973-05-16 1974-05-15 Method of sewage biological treatment by aeration and equipment for making the same
NL7406507A NL176658C (en) 1973-05-16 1974-05-15 METHOD AND APPARATUS FOR CONTACTING A GAS WITH A SUSPENSION OF SOLIDS IN A LIQUID.
IT2279174A IT1019614B (en) 1973-05-16 1974-05-15 TREATMENT OF BIODEGRADABLE WASTE
TR1807074A TR18070A (en) 1973-05-16 1974-05-15 THE TREATMENT OF LEFT SUBSTANCES THAT CAN BE BIOLOGICALLY DEGRADED
FR7416893A FR2229655B1 (en) 1973-05-16 1974-05-15
PL1974171090A PL109974B1 (en) 1973-05-16 1974-05-15 Method and apparatus for biological sewage treatment with activated sludge
CH665674A CH578367A5 (en) 1973-05-16 1974-05-15
AT406574A AT356602B (en) 1973-05-16 1974-05-16 METHOD AND DEVICE FOR TREATING WASTEWATER
ES426380A ES426380A1 (en) 1973-05-16 1974-05-16 Treatment of biologically-degradable waste
DD17855574A DD113208A5 (en) 1973-05-16 1974-05-16
BE144419A BE815150A (en) 1973-05-16 1974-05-16 TREATMENT OF WASTE SUSCEPTIBLE OF BIOLOGICAL DEGRADATION
JP16148980A JPS56129093A (en) 1973-05-16 1980-11-18 Method of disposing sewage
JP16149080A JPS56139198A (en) 1973-05-16 1980-11-18 Method of disposing sewage and device for continuously disposing seage
US06/213,596 US4351730A (en) 1973-05-16 1980-12-05 Treatment of biologically-degradable waste
US06/386,186 US4416781A (en) 1973-05-16 1982-06-14 Treatment of biologically-degradable waste

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2332873A GB1473665A (en) 1973-05-16 1973-05-16 Treatment of biologically-degradable waste

Publications (1)

Publication Number Publication Date
GB1473665A true GB1473665A (en) 1977-05-18

Family

ID=10193835

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2332873A Expired GB1473665A (en) 1973-05-16 1973-05-16 Treatment of biologically-degradable waste

Country Status (2)

Country Link
BE (1) BE815150A (en)
GB (1) GB1473665A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2351059A1 (en) * 1976-05-14 1977-12-09 Ici Ltd TREATMENT OF WASTE SUSCEPTIBLE OF BIOLOGICAL DEGRADATION
EP0008856A1 (en) * 1978-08-30 1980-03-19 Dorr-Oliver Incorporated Apparatus and process for dissolution of gases in liquid
US4217211A (en) * 1979-07-09 1980-08-12 BioMass Fuel Conversion Associates, Inc. Pressurized treatment of sewage
EP0017305A1 (en) * 1979-01-29 1980-10-15 Paterson Candy International Limited A method and apparatus for treating biologically degradable waste
US4251361A (en) * 1979-11-13 1981-02-17 Conoco, Inc. Hybrid gas flotation separator
US4272379A (en) * 1979-10-26 1981-06-09 C-I-L Inc. Method for protecting a bioreactor pressurized head tank against extreme surges of influent waste water
US4407718A (en) * 1979-10-26 1983-10-04 C-I-L Inc. Long vertical shaft bioreactor with pressurized head tanks
US6017020A (en) * 1990-02-01 2000-01-25 Baughman; Michael L. System and method for diffusing gas bubbles into a body of water
US6214228B1 (en) 1996-09-13 2001-04-10 Kvaerner Technology & Research Limited Liquid effluent treatment plant and process
US6328892B1 (en) 1998-03-17 2001-12-11 Kvaerner Technology & Research Limited Liquid effluent treatment process and plant
GB2476847A (en) * 2010-01-06 2011-07-13 Wrc Plc Flotation treatment of liquids
CN110745943A (en) * 2019-10-30 2020-02-04 苏州工业园区清源华衍水务有限公司 Method for denitrification based on short-term hunger and denitrification biological filter system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1527731A (en) * 1975-04-07 1978-10-11 Ici Ltd Sewage treatment-flotation apparatus

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2351059A1 (en) * 1976-05-14 1977-12-09 Ici Ltd TREATMENT OF WASTE SUSCEPTIBLE OF BIOLOGICAL DEGRADATION
EP0008856A1 (en) * 1978-08-30 1980-03-19 Dorr-Oliver Incorporated Apparatus and process for dissolution of gases in liquid
EP0017305A1 (en) * 1979-01-29 1980-10-15 Paterson Candy International Limited A method and apparatus for treating biologically degradable waste
US4217211A (en) * 1979-07-09 1980-08-12 BioMass Fuel Conversion Associates, Inc. Pressurized treatment of sewage
US4407718A (en) * 1979-10-26 1983-10-04 C-I-L Inc. Long vertical shaft bioreactor with pressurized head tanks
US4272379A (en) * 1979-10-26 1981-06-09 C-I-L Inc. Method for protecting a bioreactor pressurized head tank against extreme surges of influent waste water
US4251361A (en) * 1979-11-13 1981-02-17 Conoco, Inc. Hybrid gas flotation separator
US6017020A (en) * 1990-02-01 2000-01-25 Baughman; Michael L. System and method for diffusing gas bubbles into a body of water
US6214228B1 (en) 1996-09-13 2001-04-10 Kvaerner Technology & Research Limited Liquid effluent treatment plant and process
US6328892B1 (en) 1998-03-17 2001-12-11 Kvaerner Technology & Research Limited Liquid effluent treatment process and plant
GB2476847A (en) * 2010-01-06 2011-07-13 Wrc Plc Flotation treatment of liquids
CN110745943A (en) * 2019-10-30 2020-02-04 苏州工业园区清源华衍水务有限公司 Method for denitrification based on short-term hunger and denitrification biological filter system
CN110745943B (en) * 2019-10-30 2021-11-02 苏州工业园区清源华衍水务有限公司 Method for denitrification based on short-term hunger and denitrification biological filter system

Also Published As

Publication number Publication date
BE815150A (en) 1974-11-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19940422