GB1199412A - Sludge Dewatering. - Google Patents

Sludge Dewatering.

Info

Publication number
GB1199412A
GB1199412A GB34332/66A GB3433266A GB1199412A GB 1199412 A GB1199412 A GB 1199412A GB 34332/66 A GB34332/66 A GB 34332/66A GB 3433266 A GB3433266 A GB 3433266A GB 1199412 A GB1199412 A GB 1199412A
Authority
GB
United Kingdom
Prior art keywords
july
screen
sewage sludge
vessel
metal
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
GB34332/66A
Inventor
John Hugh O'keeffe
Clifford Brian Capper
Geoffrey Charles Holehouse
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.)
GREENING WARRINGTON Ltd N
SYDNEY FRANCIS WILLIAM CRUNDAL
Forestal Land Timber and Railways Co Ltd
Original Assignee
GREENING WARRINGTON Ltd N
SYDNEY FRANCIS WILLIAM CRUNDAL
Forestal Land Timber and Railways Co 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 GREENING WARRINGTON Ltd N, SYDNEY FRANCIS WILLIAM CRUNDAL, Forestal Land Timber and Railways Co Ltd filed Critical GREENING WARRINGTON Ltd N
Priority to GB34332/66A priority Critical patent/GB1199412A/en
Publication of GB1199412A publication Critical patent/GB1199412A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (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)
  • Treatment Of Sludge (AREA)

Abstract

1,199,412. Dewatering sewage sludge. FORESTAL LAND TIMBER & RAILWAYS CO. Ltd., N. GREENING (WARRINGTON) Ltd. and S. F. W. CRUNDALL, 31 July, 1967 [30 July, 1966], No. 34332/66. Heading B1D. Sewage sludge, possibly heated or cooled or treated chemically to promote separation, is allowed to settle in a closed or open vessel, and separated water is drained off through one or more porous screens, which may define a lining of the vessel or individual conduits therein and which are oriented at 45 degrees or more to the horizontal, at a controlled rate so that the pressure across the screen is sufficient to force the water therethrough but insufficient to cause clogging. The screen may be wedge wire, expanded metal, woven material, sheet perforated with slots or square or circular apertures (dimensions exemplified), glass, metal, plastics, ceramic or resin-bonded wood.
GB34332/66A 1966-07-30 1966-07-30 Sludge Dewatering. Expired GB1199412A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB34332/66A GB1199412A (en) 1966-07-30 1966-07-30 Sludge Dewatering.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB34332/66A GB1199412A (en) 1966-07-30 1966-07-30 Sludge Dewatering.

Publications (1)

Publication Number Publication Date
GB1199412A true GB1199412A (en) 1970-07-22

Family

ID=10364328

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34332/66A Expired GB1199412A (en) 1966-07-30 1966-07-30 Sludge Dewatering.

Country Status (1)

Country Link
GB (1) GB1199412A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4396513A (en) * 1981-09-08 1983-08-02 Betz Laboratories, Inc. Use of very high charge cationic polymers in biological sludge dewatering

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4396513A (en) * 1981-09-08 1983-08-02 Betz Laboratories, Inc. Use of very high charge cationic polymers in biological sludge dewatering

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years