GB2019237A - Process for dewatering fibrous waste - Google Patents

Process for dewatering fibrous waste

Info

Publication number
GB2019237A
GB2019237A GB7910787A GB7910787A GB2019237A GB 2019237 A GB2019237 A GB 2019237A GB 7910787 A GB7910787 A GB 7910787A GB 7910787 A GB7910787 A GB 7910787A GB 2019237 A GB2019237 A GB 2019237A
Authority
GB
United Kingdom
Prior art keywords
waste
wall
screw
fibrous waste
dewatering fibrous
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.)
Withdrawn
Application number
GB7910787A
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.)
Honeywell UOP LLC
Original Assignee
UOP LLC
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
Priority claimed from US05/891,437 external-priority patent/US4160732A/en
Application filed by UOP LLC filed Critical UOP LLC
Publication of GB2019237A publication Critical patent/GB2019237A/en
Withdrawn legal-status Critical Current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
    • C02F11/125—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using screw filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/12—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/26—Permeable casings or strainers

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)
  • Filtration Of Liquid (AREA)
  • Filtering Materials (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

A fibrous organic waste such as sewage sludge is by passage through a screw press formed by a helical winding with a spacing of 0.0075 to 0.013 cm. having a porous outer wall (3). Rotary screw (4) pressurizes the waste and moves it to an outlet opening (12) at the end of the dewatering zone, and the screw periphery is spaced by 0.08 to 5 cm from the wall (3) so that a substantially unagitated layer of fibrous material derived from the waste is retained on the wall to act as a filter aid. <IMAGE>
GB7910787A 1978-03-29 1979-03-28 Process for dewatering fibrous waste Withdrawn GB2019237A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/891,437 US4160732A (en) 1977-07-07 1978-03-29 Mechanical dewatering process

Publications (1)

Publication Number Publication Date
GB2019237A true GB2019237A (en) 1979-10-31

Family

ID=25398180

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7910787A Withdrawn GB2019237A (en) 1978-03-29 1979-03-28 Process for dewatering fibrous waste

Country Status (7)

Country Link
JP (1) JPS54152347A (en)
CA (1) CA1082983A (en)
DE (1) DE2911899A1 (en)
ES (1) ES478987A1 (en)
FR (1) FR2421148A1 (en)
GB (1) GB2019237A (en)
IT (1) IT1113227B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990012919A1 (en) * 1989-04-17 1990-11-01 Sunds Defibrator Industries Aktiebolag Dewatering device
GB2270010A (en) * 1992-08-28 1994-03-02 Pollution Control Engineering Filtration apparatus
CN107718653A (en) * 2017-11-05 2018-02-23 大丰中坤环保机械制造有限公司 A kind of screw extrusion dewaterer

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58153509A (en) * 1982-03-08 1983-09-12 Kuri Kagaku Sochi Kk Continuous filter
JPS6353394U (en) * 1986-09-22 1988-04-09
JP7490323B2 (en) 2019-09-24 2024-05-27 イーグル工業株式会社 Spool valve
JP7427349B2 (en) 2020-02-19 2024-02-05 イーグル工業株式会社 spool valve

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE479674C (en) * 1929-07-18 Alfred Kittnar Centrifugal drum for coal sludge dewatering
US1772262A (en) * 1920-03-31 1930-08-05 John J Naugle Filtering method and means
GB372760A (en) * 1930-12-11 1932-05-11 Horace Waring Improvements in or relating to the drying and/or filtration of mixtures of liquids and solids
GB926211A (en) * 1958-08-05 1963-05-15 Ruhrchemie Ag Apparatus for filtering suspensions
NL294351A (en) * 1962-06-22 1900-01-01
GB1037384A (en) * 1963-07-30 1966-07-27 Molbros Ltd Improvements in or relating to filters for the separation of solids and/or semi-solids from fluids
US3739915A (en) * 1970-10-02 1973-06-19 Johns Manville Internal pressure precoat filter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990012919A1 (en) * 1989-04-17 1990-11-01 Sunds Defibrator Industries Aktiebolag Dewatering device
GB2270010A (en) * 1992-08-28 1994-03-02 Pollution Control Engineering Filtration apparatus
CN107718653A (en) * 2017-11-05 2018-02-23 大丰中坤环保机械制造有限公司 A kind of screw extrusion dewaterer

Also Published As

Publication number Publication date
DE2911899A1 (en) 1979-10-04
ES478987A1 (en) 1979-07-16
FR2421148A1 (en) 1979-10-26
IT7921391A0 (en) 1979-03-28
IT1113227B (en) 1986-01-20
JPS54152347A (en) 1979-11-30
CA1082983A (en) 1980-08-05

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)