GB1521672A - Treating activated sludge to facilitate dewatering thereo - Google Patents

Treating activated sludge to facilitate dewatering thereo

Info

Publication number
GB1521672A
GB1521672A GB10090/77A GB1009077A GB1521672A GB 1521672 A GB1521672 A GB 1521672A GB 10090/77 A GB10090/77 A GB 10090/77A GB 1009077 A GB1009077 A GB 1009077A GB 1521672 A GB1521672 A GB 1521672A
Authority
GB
United Kingdom
Prior art keywords
sludge
thereo
activated sludge
treating activated
dewatering
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
GB10090/77A
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.)
Champion International Corp
Original Assignee
Champion International 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 Champion International Corp filed Critical Champion International Corp
Publication of GB1521672A publication Critical patent/GB1521672A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23J—PROTEIN COMPOSITIONS FOR FOODSTUFFS; WORKING-UP PROTEINS FOR FOODSTUFFS; PHOSPHATIDE COMPOSITIONS FOR FOODSTUFFS
    • A23J1/00—Obtaining protein compositions for foodstuffs; Bulk opening of eggs and separation of yolks from whites
    • A23J1/001—Obtaining protein compositions for foodstuffs; Bulk opening of eggs and separation of yolks from whites from waste materials, e.g. kitchen waste
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
    • C02F11/143—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
    • 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
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Treatment Of Sludge (AREA)

Abstract

1521672 Dewatering sludge CHAMPION INTERNATIONAL CORP 10 March 1977 [14 Dec 1976] 10090/77 Addition to 1521207 Heading C1C [Also in Division C3] Activated sludge is dewatered by acidifying the sludge to a pH not greater than 2À2, heating the sludge to form 150‹ F. to 210‹ F., maintaining the sludge at this temperature for a time sufficient, as determined by gravity settling rate tests on samples of the heated acidified sludge, to obtain a settling rate in the first 3 minutes of test of at least # inch/min. and separating water from the sludge at from 150‹ C. to 210‹ C. The sludge is preferably acidified with sulphuric or hydrochloric acid.
GB10090/77A 1976-12-14 1977-03-10 Treating activated sludge to facilitate dewatering thereo Expired GB1521672A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US75226176A 1976-12-14 1976-12-14

Publications (1)

Publication Number Publication Date
GB1521672A true GB1521672A (en) 1978-08-16

Family

ID=25025571

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10090/77A Expired GB1521672A (en) 1976-12-14 1977-03-10 Treating activated sludge to facilitate dewatering thereo

Country Status (3)

Country Link
DE (1) DE2715257A1 (en)
FR (1) FR2374265A2 (en)
GB (1) GB1521672A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997030008A1 (en) * 1996-02-13 1997-08-21 Biopartner As A method and apparatus for treating liquid-containing material based on organic waste products

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005011B1 (en) * 1978-04-15 1981-07-15 Simon-Carves Limited A method of removing metallic impurities from sewage sludge
SU994441A1 (en) * 1980-05-21 1983-02-07 Центральная Станция Аэрации Сточных Вод Г.Ленинграда Process for treating effluent precipitates
SU994444A1 (en) * 1980-10-15 1983-02-07 Управление Водопроводно-Канализационного Хозяйства "Водоканал" Исполнительного Комитета Ленинградского Городского Совета Народных Депутатов Method for conditioning effluent precipitates

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1187512A (en) * 1966-08-05 1970-04-08 Kyowa Hakko Kogyo Kk Process for Extracting Proteins from Micro-Organisms
DE2045162A1 (en) * 1970-09-12 1972-06-08 Rheinstahl Ag, 4300 Essen Waste water sludges - flocculated after denaturing proteins
DE2052667A1 (en) * 1970-09-25 1972-03-30 Foster D Senll Inc Process for treating sewage sludge
CA1074027A (en) * 1975-10-14 1980-03-18 Itt Industries Process for the treatment of activated sludge

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997030008A1 (en) * 1996-02-13 1997-08-21 Biopartner As A method and apparatus for treating liquid-containing material based on organic waste products
US6099741A (en) * 1996-02-13 2000-08-08 Biopartner As Method and apparatus for treating liquid-containing material based on organic waste products
US6299782B1 (en) 1996-02-13 2001-10-09 Conterra As Method and apparatus for treating liquid-containing material based on organic waste products

Also Published As

Publication number Publication date
FR2374265B2 (en) 1983-02-25
FR2374265A2 (en) 1978-07-13
DE2715257A1 (en) 1978-06-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee