ATE197614T1 - Verfahren zur abscheidung von übergangsmetallen und erdalkalimetallen aus bleichabwässern - Google Patents

Verfahren zur abscheidung von übergangsmetallen und erdalkalimetallen aus bleichabwässern

Info

Publication number
ATE197614T1
ATE197614T1 AT95936828T AT95936828T ATE197614T1 AT E197614 T1 ATE197614 T1 AT E197614T1 AT 95936828 T AT95936828 T AT 95936828T AT 95936828 T AT95936828 T AT 95936828T AT E197614 T1 ATE197614 T1 AT E197614T1
Authority
AT
Austria
Prior art keywords
metals
chelate
chelating agent
solution
alkaline material
Prior art date
Application number
AT95936828T
Other languages
English (en)
Inventor
Olle Wennberg
Original Assignee
Kvaerner Pulping Tech
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 Kvaerner Pulping Tech filed Critical Kvaerner Pulping Tech
Application granted granted Critical
Publication of ATE197614T1 publication Critical patent/ATE197614T1/de

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
    • D21C11/0021—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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/0064—Aspects concerning the production and the treatment of green and white liquors, e.g. causticizing green liquor
    • D21C11/0078—Treatment of green or white liquors with other means or other compounds than gases, e.g. in order to separate solid compounds such as sodium chloride and carbonate from these liquors; Further treatment of these compounds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S210/00—Liquid purification or separation
    • Y10S210/928—Paper mill waste, e.g. white water, black liquor treated

Landscapes

  • Paper (AREA)
  • Removal Of Specific Substances (AREA)
  • Detergent Compositions (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
AT95936828T 1994-11-04 1995-10-31 Verfahren zur abscheidung von übergangsmetallen und erdalkalimetallen aus bleichabwässern ATE197614T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9403779A SE504424C2 (sv) 1994-11-04 1994-11-04 Sätt att fälla ut övergångsmetaller och alkaliska jordartsmetaller ur blekeriavlutar genom att tillsätta alkalisk vätska
PCT/SE1995/001281 WO1996014467A1 (en) 1994-11-04 1995-10-31 Method of precipitating transition metals and alkaline earth metals from bleach plant effluents

Publications (1)

Publication Number Publication Date
ATE197614T1 true ATE197614T1 (de) 2000-12-15

Family

ID=20395847

Family Applications (1)

Application Number Title Priority Date Filing Date
AT95936828T ATE197614T1 (de) 1994-11-04 1995-10-31 Verfahren zur abscheidung von übergangsmetallen und erdalkalimetallen aus bleichabwässern

Country Status (10)

Country Link
US (1) US6024833A (de)
EP (1) EP0803008B1 (de)
AT (1) ATE197614T1 (de)
BR (1) BR9509570A (de)
CA (1) CA2203392A1 (de)
DE (1) DE69519441T2 (de)
ES (1) ES2153904T3 (de)
PT (1) PT803008E (de)
SE (1) SE504424C2 (de)
WO (1) WO1996014467A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9603029D0 (sv) * 1996-08-20 1996-08-20 Svenska Traeforskningsinst Method for lowering the level of oxalic acid
SE511794C2 (sv) * 1997-06-30 1999-11-29 Sunds Defibrator Ind Ab Sätt att reducera halten kalcium i vätskefasen i en pappersmassasuspension
SE9803384L (sv) * 1998-03-02 1999-09-03 Kemira Kemi Ab Förfarande för behandling av processvatten
SE522436C2 (sv) 1998-05-26 2004-02-10 Andritz Oy Förfarande för förhindrande av nedsmutsning av värmeöverföringsytor i en flerstegsindunstningsanläggning för svartlut och blekeriutsläpp
US20070000628A1 (en) * 2005-06-30 2007-01-04 Sealey James E Ii Method for removal of metals from a bleach plant filtrate stream

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE417114B (sv) * 1977-07-25 1981-02-23 Mo Och Domsjoe Ab Forfarande for forebyggande av inkrustbildning i cellulosafabriker
DE2834259A1 (de) * 1978-08-04 1980-02-28 Dsi Sportartikel Skistockklammer
ATE97179T1 (de) * 1989-06-06 1993-11-15 Eka Nobel Ab Verfahren zum bleichen von lignocellulose enthaltenden zellstoffen.
AT395028B (de) * 1990-02-07 1992-08-25 Chemiefaser Lenzing Ag Verfahren zum chlorfreien bleichen von kunstfaserzellstoff
US5509999A (en) * 1993-03-24 1996-04-23 Kamyr, Inc. Treatment of bleach plant effluents
SE9301161L (sv) * 1993-04-07 1994-10-08 Sunds Defibrator Ind Ab Förfarande för behandling av processvatten
SE501613C2 (sv) * 1993-08-03 1995-03-27 Kvaerner Pulping Tech Sätt vid integrering av blekning och återvinning vid framställning av massa

Also Published As

Publication number Publication date
SE9403779L (sv) 1996-05-05
EP0803008B1 (de) 2000-11-15
ES2153904T3 (es) 2001-03-16
CA2203392A1 (en) 1996-05-17
DE69519441T2 (de) 2001-06-21
SE504424C2 (sv) 1997-02-10
DE69519441D1 (de) 2000-12-21
SE9403779D0 (sv) 1994-11-04
PT803008E (pt) 2001-04-30
EP0803008A1 (de) 1997-10-29
BR9509570A (pt) 1997-09-16
WO1996014467A1 (en) 1996-05-17
US6024833A (en) 2000-02-15

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Legal Events

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UEP Publication of translation of european patent specification