FI971605A - Förfarande för behandling av en blekningsläggnings syra och alkaliska avloppsflöden separat - Google Patents

Förfarande för behandling av en blekningsläggnings syra och alkaliska avloppsflöden separat Download PDF

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Publication number
FI971605A
FI971605A FI971605A FI971605A FI971605A FI 971605 A FI971605 A FI 971605A FI 971605 A FI971605 A FI 971605A FI 971605 A FI971605 A FI 971605A FI 971605 A FI971605 A FI 971605A
Authority
FI
Finland
Prior art keywords
waste streams
alkaline waste
bleaching plant
treating acidic
streams separately
Prior art date
Application number
FI971605A
Other languages
English (en)
Finnish (fi)
Other versions
FI971605A0 (sv
Inventor
Johan Landfors
Hans Johansson
Mikael Engstroem
Original Assignee
Eka Chemicals 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
Priority claimed from SE9403372A external-priority patent/SE9403372L/sv
Priority claimed from SE9502169A external-priority patent/SE9502169D0/sv
Application filed by Eka Chemicals Ab filed Critical Eka Chemicals Ab
Publication of FI971605A0 publication Critical patent/FI971605A0/sv
Publication of FI971605A publication Critical patent/FI971605A/sv

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
    • D21C9/1026—Other features in bleaching processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
    • B01D5/0078—Condensation of vapours; Recovering volatile solvents by condensation characterised by auxiliary systems or arrangements
    • B01D5/009—Collecting, removing and/or treatment of the condensate
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/048—Purification of waste water by evaporation
    • 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
    • D21C11/0042—Fractionating or concentration of spent liquors by special methods

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
FI971605A 1994-10-05 1997-04-16 Förfarande för behandling av en blekningsläggnings syra och alkaliska avloppsflöden separat FI971605A (sv)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
SE9403372A SE9403372L (sv) 1994-10-05 1994-10-05 Rening och recirkulation av avloppsvatten till ett massablekeri genom elektrodialys eller indunstning och förbränning
US13995P 1995-06-12 1995-06-12
SE9502169A SE9502169D0 (sv) 1995-06-14 1995-06-14 Förfarande för rening av processvatten vid massaframställning
US191495P 1995-06-20 1995-06-20
PCT/SE1995/001121 WO1996011299A1 (en) 1994-10-05 1995-10-03 A method for treating acid and alkaline waste streams from a bleach plant separately

Publications (2)

Publication Number Publication Date
FI971605A0 FI971605A0 (sv) 1997-04-16
FI971605A true FI971605A (sv) 1997-04-16

Family

ID=26662147

Family Applications (1)

Application Number Title Priority Date Filing Date
FI971605A FI971605A (sv) 1994-10-05 1997-04-16 Förfarande för behandling av en blekningsläggnings syra och alkaliska avloppsflöden separat

Country Status (8)

Country Link
EP (1) EP0784721A1 (sv)
JP (1) JPH10506964A (sv)
AU (1) AU3712195A (sv)
BR (1) BR9509188A (sv)
CA (1) CA2201117A1 (sv)
FI (1) FI971605A (sv)
NO (1) NO971504D0 (sv)
WO (1) WO1996011299A1 (sv)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
AU6641498A (en) 1997-03-07 1998-09-22 Akzo Nobel N.V. Process for treating wastewater
EP0863113A1 (en) * 1997-03-07 1998-09-09 Akzo Nobel N.V. Process for treating wastewater
US6712882B1 (en) 1999-11-02 2004-03-30 Shell Oil Company Process for the purification of industrial waste water from a propylene oxide production process
FR2809385A1 (fr) * 2000-05-26 2001-11-30 Tsb Internat Methode et installation d'epuration et de dessalement de l'eau de mer
CN1321070C (zh) * 2005-02-03 2007-06-13 刘德沛 环氧丙烷生产废水处理方法及其多效蒸发装置
CN104928963B (zh) * 2015-05-08 2017-10-24 白博 一种零排放的化机浆制浆废液在线高浓提取工艺

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3986951A (en) * 1975-11-18 1976-10-19 Champion International Corporation Chlorine-based bleachery effluent treatment
US4049490A (en) * 1976-02-23 1977-09-20 Veniamin Petrovich Zaplatin Electrodialysis of bleaching effluent
AU619580B2 (en) * 1988-08-23 1992-01-30 Sappi Limited Elimination of bleach effluents
FI85293C (sv) * 1990-05-04 1992-03-25 Poeyry Jaakko & Co Oy Förfarande för rening och återföring av cellulosafabrikers blekeriavva tten

Also Published As

Publication number Publication date
CA2201117A1 (en) 1996-04-18
JPH10506964A (ja) 1998-07-07
BR9509188A (pt) 1997-12-30
EP0784721A1 (en) 1997-07-23
WO1996011299A1 (en) 1996-04-18
NO971504L (no) 1997-04-03
FI971605A0 (sv) 1997-04-16
NO971504D0 (no) 1997-04-03
AU3712195A (en) 1996-05-02

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Legal Events

Date Code Title Description
NF Re-establishment of lapsed right