NZ263264A - Removal of metal ions from process water for bleaching pulp, comprising contacting with alkali and precipitation of low solubility metal compounds - Google Patents

Removal of metal ions from process water for bleaching pulp, comprising contacting with alkali and precipitation of low solubility metal compounds

Info

Publication number
NZ263264A
NZ263264A NZ263264A NZ26326494A NZ263264A NZ 263264 A NZ263264 A NZ 263264A NZ 263264 A NZ263264 A NZ 263264A NZ 26326494 A NZ26326494 A NZ 26326494A NZ 263264 A NZ263264 A NZ 263264A
Authority
NZ
New Zealand
Prior art keywords
metal ions
process water
pulp
bleaching
precipitation
Prior art date
Application number
NZ263264A
Other languages
English (en)
Inventor
Ulf Germgard
Solveig Norden
Original Assignee
Sunds Defibrator Ind 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 Sunds Defibrator Ind Ab filed Critical Sunds Defibrator Ind Ab
Publication of NZ263264A publication Critical patent/NZ263264A/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
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp
    • 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
    • D21C11/0021—Introduction of various effluents, e.g. waste waters, into the pulping, recovery and regeneration cycle (closed-cycle)
    • D21C11/0028—Effluents derived from the washing or bleaching plants
    • 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
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1026—Other features in bleaching processes

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Removal Of Specific Substances (AREA)
  • Paper (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Physical Water Treatments (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
NZ263264A 1993-04-07 1994-02-17 Removal of metal ions from process water for bleaching pulp, comprising contacting with alkali and precipitation of low solubility metal compounds NZ263264A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9301161A SE9301161L (sv) 1993-04-07 1993-04-07 Förfarande för behandling av processvatten

Publications (1)

Publication Number Publication Date
NZ263264A true NZ263264A (en) 1996-08-27

Family

ID=20389509

Family Applications (1)

Application Number Title Priority Date Filing Date
NZ263264A NZ263264A (en) 1993-04-07 1994-02-17 Removal of metal ions from process water for bleaching pulp, comprising contacting with alkali and precipitation of low solubility metal compounds

Country Status (12)

Country Link
EP (1) EP0693144A1 (no)
JP (1) JPH08508546A (no)
CN (1) CN1120358A (no)
AU (1) AU672501B2 (no)
BR (1) BR9406105A (no)
CA (1) CA2160123A1 (no)
FI (1) FI954766A0 (no)
NO (1) NO953993D0 (no)
NZ (1) NZ263264A (no)
SE (1) SE9301161L (no)
WO (1) WO1994023122A1 (no)
ZA (1) ZA941235B (no)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9301160L (sv) * 1992-08-28 1994-03-01 Sunds Defibrator Ind Ab Förfarande för behandling av processvatten
SE504424C2 (sv) * 1994-11-04 1997-02-10 Kvaerner Pulping Tech Sätt att fälla ut övergångsmetaller och alkaliska jordartsmetaller ur blekeriavlutar genom att tillsätta alkalisk vätska
US5792315A (en) * 1995-02-27 1998-08-11 Eka Chemicals Ab Purifying aqueous effluent from a pulp mill using electro chemical membrane device
SE9500732L (sv) * 1995-02-27 1996-08-28 Eka Chemicals Ab Förfarande för behandling av vätskor
SE9803384L (sv) * 1998-03-02 1999-09-03 Kemira Kemi Ab Förfarande för behandling av processvatten
SG188873A1 (en) * 2008-12-19 2013-04-30 Xyleco Inc Processing biomass
US20100263813A1 (en) * 2009-04-21 2010-10-21 Andritz Inc. Green liquor pretreatment of lignocellulosic material
CN103180506A (zh) * 2011-09-19 2013-06-26 北京沃特玛德环境技术股份有限公司 造纸工业碱回收固体废渣综合利用的方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4684472A (en) * 1985-12-26 1987-08-04 Phillips Petroleum Company Precipitation of waste chromium compounds utilizing an aqueous sulfide solution
DE58902905D1 (de) * 1989-04-28 1993-01-14 Siemens Ag Verfahren zum entfernen von kupfer aus abwasser.
US5120448A (en) * 1990-09-19 1992-06-09 Dorica Josesph G Removal of aox frm bleach plant mill effluents by ph shift using the alkalinity/acidity sources available at the mill
EP0564443A1 (en) * 1992-03-15 1993-10-06 Kamyr, Inc. Treatment of bleach plant filtrates

Also Published As

Publication number Publication date
FI954766A (fi) 1995-10-06
CA2160123A1 (en) 1994-10-13
JPH08508546A (ja) 1996-09-10
WO1994023122A1 (en) 1994-10-13
BR9406105A (pt) 1995-12-12
ZA941235B (en) 1994-09-20
EP0693144A1 (en) 1996-01-24
SE9301161L (sv) 1994-10-08
AU672501B2 (en) 1996-10-03
AU6387694A (en) 1994-10-24
CN1120358A (zh) 1996-04-10
SE9301161D0 (sv) 1993-04-07
FI954766A0 (fi) 1995-10-06
NO953993L (no) 1995-10-06
NO953993D0 (no) 1995-10-06

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