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GB425976A - A method of drying sludges - Google Patents

A method of drying sludges

Info

Publication number
GB425976A
GB425976A GB1793033A GB1793033A GB425976A GB 425976 A GB425976 A GB 425976A GB 1793033 A GB1793033 A GB 1793033A GB 1793033 A GB1793033 A GB 1793033A GB 425976 A GB425976 A GB 425976A
Authority
GB
United Kingdom
Prior art keywords
sludge
sludges
coal
presses
precipitating agents
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
GB1793033A
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.)
Gutehoffnungshutte Oberhausen AG
Original Assignee
Gutehoffnungshutte Oberhausen AG
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 Gutehoffnungshutte Oberhausen AG filed Critical Gutehoffnungshutte Oberhausen AG
Priority to GB1793033A priority Critical patent/GB425976A/en
Publication of GB425976A publication Critical patent/GB425976A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/005—Drying solid materials or objects by processes not involving the application of heat by dipping them into or mixing them with a chemical liquid, e.g. organic; chemical, e.g. organic, dewatering aids

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Treatment Of Sludge (AREA)

Abstract

In the drying of sludge containing very fine particles, which may be in a state of colloidal subdivision, in centrifuging machines, filter presses, filter flasks, suction filters, drum and like rotary filters and worm presses with and without filtering devices, the sludge is subjected to a preliminary treatment, consisting in the addition of precipitating agents which cause the finest constituents to coagulate. Preferably the sludge is intimately mixed with the precipitating agent, if necessary with agitation, and then allowed to stand for a short while to settle. Suitable precipitating agents are milk of lime, starch, oil emulsion, resin emulsion, and sludges treated thereby are fine coal, coal sludge, ore sludge, metal sludges, petroleum sludge, stone and other sludges of the chemical industry.
GB1793033A 1933-06-23 1933-06-23 A method of drying sludges Expired GB425976A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1793033A GB425976A (en) 1933-06-23 1933-06-23 A method of drying sludges

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1793033A GB425976A (en) 1933-06-23 1933-06-23 A method of drying sludges

Publications (1)

Publication Number Publication Date
GB425976A true GB425976A (en) 1935-03-25

Family

ID=10103729

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1793033A Expired GB425976A (en) 1933-06-23 1933-06-23 A method of drying sludges

Country Status (1)

Country Link
GB (1) GB425976A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1196137B (en) * 1961-09-11 1965-07-01 Brueckenbau Process for cleaning waste water and / or for thickening sewage sludge
DE1272238B (en) * 1958-07-02 1968-07-04 Komline Sanderson Eng Corp Process for the continuous dewatering of fresh sludge from treatment plants
US4186089A (en) 1977-05-16 1980-01-29 Kurita Water Industries Limited Method and apparatus for dewatering of sludgy substance
GB2134403A (en) * 1983-02-02 1984-08-15 Edwards & Jones Filtering

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1272238B (en) * 1958-07-02 1968-07-04 Komline Sanderson Eng Corp Process for the continuous dewatering of fresh sludge from treatment plants
DE1196137B (en) * 1961-09-11 1965-07-01 Brueckenbau Process for cleaning waste water and / or for thickening sewage sludge
US4186089A (en) 1977-05-16 1980-01-29 Kurita Water Industries Limited Method and apparatus for dewatering of sludgy substance
GB2134403A (en) * 1983-02-02 1984-08-15 Edwards & Jones Filtering

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