GB1231154A - - Google Patents

Info

Publication number
GB1231154A
GB1231154A GB1231154DA GB1231154A GB 1231154 A GB1231154 A GB 1231154A GB 1231154D A GB1231154D A GB 1231154DA GB 1231154 A GB1231154 A GB 1231154A
Authority
GB
United Kingdom
Prior art keywords
sludge
march
fittering
dewatered
centrifuging
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
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 filed Critical
Publication of GB1231154A publication Critical patent/GB1231154A/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
    • 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
    • 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
    • C02F11/18—Treatment of sludge; Devices therefor by thermal conditioning

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Sludge (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

1,231,154. Treating sewage sludge. VON ROLL A.G. 25 March, 1969 [25 March, 1968], No. 15645/69. Heading C1C. Raw and/or digested sewage sludge is dewatered by bringing the pH of the sludge to between 5À5 and 6À5, heating the sludge at not less than 150‹ C. for not more than an hour, and then fittering or centrifuging the sludge.
GB1231154D 1968-03-25 1969-03-25 Expired GB1231154A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH434968A CH469639A (en) 1968-03-25 1968-03-25 Process for the dewatering of digested and / or fresh sludge from sewage treatment plants

Publications (1)

Publication Number Publication Date
GB1231154A true GB1231154A (en) 1971-05-12

Family

ID=4274436

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1231154D Expired GB1231154A (en) 1968-03-25 1969-03-25

Country Status (4)

Country Link
CH (1) CH469639A (en)
DE (1) DE1906158A1 (en)
FR (1) FR2003224B1 (en)
GB (1) GB1231154A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4988442A (en) * 1988-11-07 1991-01-29 Polypure, Inc. Process for dewatering of biological sludge

Also Published As

Publication number Publication date
FR2003224A1 (en) 1969-11-07
FR2003224B1 (en) 1975-08-01
CH469639A (en) 1969-03-15
DE1906158A1 (en) 1969-10-02

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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