AU672501B2 - Method of treating process water - Google Patents

Method of treating process water Download PDF

Info

Publication number
AU672501B2
AU672501B2 AU63876/94A AU6387694A AU672501B2 AU 672501 B2 AU672501 B2 AU 672501B2 AU 63876/94 A AU63876/94 A AU 63876/94A AU 6387694 A AU6387694 A AU 6387694A AU 672501 B2 AU672501 B2 AU 672501B2
Authority
AU
Australia
Prior art keywords
process water
metal ions
pulp
treating process
bleaching
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.)
Ceased
Application number
AU63876/94A
Other languages
English (en)
Other versions
AU6387694A (en
Inventor
Ulf Germgard
Solveig Norden
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.)
Valmet AB
Original Assignee
Sunds Defibrator Industries 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 Industries AB filed Critical Sunds Defibrator Industries AB
Publication of AU6387694A publication Critical patent/AU6387694A/en
Application granted granted Critical
Publication of AU672501B2 publication Critical patent/AU672501B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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)
AU63876/94A 1993-04-07 1994-02-17 Method of treating process water Ceased AU672501B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9301161 1993-04-07
SE9301161A SE9301161L (sv) 1993-04-07 1993-04-07 Förfarande för behandling av processvatten
PCT/SE1994/000130 WO1994023122A1 (en) 1993-04-07 1994-02-17 Method of treating process water

Publications (2)

Publication Number Publication Date
AU6387694A AU6387694A (en) 1994-10-24
AU672501B2 true AU672501B2 (en) 1996-10-03

Family

ID=20389509

Family Applications (1)

Application Number Title Priority Date Filing Date
AU63876/94A Ceased AU672501B2 (en) 1993-04-07 1994-02-17 Method of treating process water

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

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0394541A1 (de) * 1989-04-28 1990-10-31 Siemens Aktiengesellschaft Verfahren zum Entfernen von Kupfer aus Abwasser

Family Cites Families (3)

* 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
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0394541A1 (de) * 1989-04-28 1990-10-31 Siemens Aktiengesellschaft Verfahren zum Entfernen von Kupfer aus Abwasser

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
AU6387694A (en) 1994-10-24
CN1120358A (zh) 1996-04-10
SE9301161D0 (sv) 1993-04-07
FI954766A0 (fi) 1995-10-06
NZ263264A (en) 1996-08-27
NO953993L (no) 1995-10-06
NO953993D0 (no) 1995-10-06

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