GB1310491A - Treatment of sewage sludge - Google Patents

Treatment of sewage sludge

Info

Publication number
GB1310491A
GB1310491A GB1310491DA GB1310491A GB 1310491 A GB1310491 A GB 1310491A GB 1310491D A GB1310491D A GB 1310491DA GB 1310491 A GB1310491 A GB 1310491A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
stage
sludges
pump
sludge
rotary
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
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.)
DAVEY PAXMAN CO Ltd
Paxman & Co Ltd Davey
Original Assignee
DAVEY PAXMAN CO Ltd
Paxman & Co Ltd Davey
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

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/12Treatment of sludge; Devices therefor by de-watering, drying, or thickening
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities

Abstract

1310491 Dewatering sludges DAVEY PAXMAN & CO Ltd 18 Feb 1970 [28 Nov 1968] 56564/68 Heading C1C Sludges are in a two stage filtration process using a rotary thickner in the initial stage and a rotary compression filter in the second stage by the addition of at least two flocculants, the first of which is introduced into a suction eye of the pump supplying sludge to the first stage and the seccond into the discharge line of the pump. The first flocculant. may be a polymerized modified tannin and the second a polyacrylamide.
GB1310491A 1968-11-28 1968-11-28 Treatment of sewage sludge Expired GB1310491A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5656468 1968-11-28

Publications (1)

Publication Number Publication Date
GB1310491A true true GB1310491A (en) 1973-03-21

Family

ID=10476949

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1310491A Expired GB1310491A (en) 1968-11-28 1968-11-28 Treatment of sewage sludge

Country Status (1)

Country Link
GB (1) GB1310491A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4229295A (en) * 1974-01-10 1980-10-21 David Krofchak Solidification of aqueous sludge
US4705640A (en) * 1984-04-30 1987-11-10 Allied Colloids Limited Flocculants and processes for their preparation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4229295A (en) * 1974-01-10 1980-10-21 David Krofchak Solidification of aqueous sludge
US4705640A (en) * 1984-04-30 1987-11-10 Allied Colloids Limited Flocculants and processes for their preparation

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee
PCPE Delete 'patent ceased' from journal

Free format text: 4935, PAGE 3217

PCNP Patent ceased through non-payment of renewal fee