SE8503090L - METHOD OF RECOVERING WATER GLASS - Google Patents

METHOD OF RECOVERING WATER GLASS

Info

Publication number
SE8503090L
SE8503090L SE8503090A SE8503090A SE8503090L SE 8503090 L SE8503090 L SE 8503090L SE 8503090 A SE8503090 A SE 8503090A SE 8503090 A SE8503090 A SE 8503090A SE 8503090 L SE8503090 L SE 8503090L
Authority
SE
Sweden
Prior art keywords
waste
waste liquor
water glass
sediment
silicate
Prior art date
Application number
SE8503090A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE453521B (en
SE453521C (en
SE8503090D0 (en
Inventor
J A I Lindahl
Original Assignee
Mo Och Domsjoe Ab
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 Mo Och Domsjoe Ab filed Critical Mo Och Domsjoe Ab
Priority to SE8503090A priority Critical patent/SE453521C/en
Publication of SE8503090D0 publication Critical patent/SE8503090D0/en
Priority to CA000509070A priority patent/CA1268907A/en
Priority to DE19863620221 priority patent/DE3620221A1/en
Priority to FI862600A priority patent/FI84190C/en
Priority to NO862454A priority patent/NO166008C/en
Publication of SE8503090L publication Critical patent/SE8503090L/en
Publication of SE453521B publication Critical patent/SE453521B/en
Publication of SE453521C publication Critical patent/SE453521C/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/0042—Fractionating or concentration of spent liquors by special methods

Landscapes

  • Paper (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • External Artificial Organs (AREA)

Abstract

A method for treatment of spent peroxide bleaching liquors Water glass is separated and recovered from waste liquors obtained when manufacturing and bleaching high yield pulps and waste-paper pulps, by adding to the waste liquor an inorganic compound containing a multi-valent cation and/or an organic flocculating agent, while simultaneously adjusting the pH of the waste liquor to a value between 3.5 and 7.5, preferably between 4.0 and 6.0. The silicate thus precipitated in the waste liquor is caused to settle to form a sediment, whereafter the sediment is separated and recovered and the waste liquor thus freed from silicate is returned to the process.
SE8503090A 1985-06-20 1985-06-20 TREATMENT OF PEROXIDE DEVICES BEFORE DEPOSIT OF SILICATES SE453521C (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
SE8503090A SE453521C (en) 1985-06-20 1985-06-20 TREATMENT OF PEROXIDE DEVICES BEFORE DEPOSIT OF SILICATES
CA000509070A CA1268907A (en) 1985-06-20 1986-05-14 Method for treatment of spent peroxide bleaching liquors
DE19863620221 DE3620221A1 (en) 1985-06-20 1986-06-16 Process for treating peroxide-bleaching waste liquors
FI862600A FI84190C (en) 1985-06-20 1986-06-18 Process for the treatment of peroxide bleach liquors
NO862454A NO166008C (en) 1985-06-20 1986-06-19 PROCEDURE FOR THE TREATMENT OF PEROXY WHITE BLADES.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8503090A SE453521C (en) 1985-06-20 1985-06-20 TREATMENT OF PEROXIDE DEVICES BEFORE DEPOSIT OF SILICATES

Publications (4)

Publication Number Publication Date
SE8503090D0 SE8503090D0 (en) 1985-06-20
SE8503090L true SE8503090L (en) 1986-12-21
SE453521B SE453521B (en) 1988-02-08
SE453521C SE453521C (en) 1990-03-26

Family

ID=20360666

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8503090A SE453521C (en) 1985-06-20 1985-06-20 TREATMENT OF PEROXIDE DEVICES BEFORE DEPOSIT OF SILICATES

Country Status (5)

Country Link
CA (1) CA1268907A (en)
DE (1) DE3620221A1 (en)
FI (1) FI84190C (en)
NO (1) NO166008C (en)
SE (1) SE453521C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPM452794A0 (en) * 1994-03-17 1994-04-14 Amcor Limited Waste water recovery system
DE102009046797A1 (en) * 2009-11-18 2011-05-19 Voith Patent Gmbh bleaching

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3003090A1 (en) * 1980-01-29 1981-08-13 Debendra Kumar Ph.D. Athinä Misra Two=step alkali pulp waste liquor de:silicification - comprises carbon di:oxide addn. to ppte. silicic acid and subsequent lime addn.
DE3111615A1 (en) * 1981-03-25 1982-10-07 Basf Ag, 6700 Ludwigshafen METHOD FOR REMOVING ANIONIC COMPOUNDS FROM WATER

Also Published As

Publication number Publication date
FI84190C (en) 1991-10-25
NO166008B (en) 1991-02-04
CA1268907A (en) 1990-05-15
SE453521B (en) 1988-02-08
FI84190B (en) 1991-07-15
DE3620221C2 (en) 1989-11-30
FI862600A0 (en) 1986-06-18
DE3620221A1 (en) 1987-01-02
SE453521C (en) 1990-03-26
NO862454D0 (en) 1986-06-19
NO862454L (en) 1986-12-22
SE8503090D0 (en) 1985-06-20
NO166008C (en) 1991-05-15
FI862600A (en) 1986-12-21

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