CA2201117A1 - Procede de traitement separe des eaux residuaires acides et alcalines provenant d'une installation de blanchiment - Google Patents

Procede de traitement separe des eaux residuaires acides et alcalines provenant d'une installation de blanchiment

Info

Publication number
CA2201117A1
CA2201117A1 CA002201117A CA2201117A CA2201117A1 CA 2201117 A1 CA2201117 A1 CA 2201117A1 CA 002201117 A CA002201117 A CA 002201117A CA 2201117 A CA2201117 A CA 2201117A CA 2201117 A1 CA2201117 A1 CA 2201117A1
Authority
CA
Canada
Prior art keywords
process flow
acid
waste water
alkaline
evaporation
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.)
Abandoned
Application number
CA002201117A
Other languages
English (en)
Inventor
Johan Landfors
Hans Johansson
Mikael Engstrom
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.)
Nouryon Pulp and Performance Chemicals AB
Original Assignee
Individual
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/xx
Priority claimed from SE9502169A external-priority patent/SE9502169D0/xx
Application filed by Individual filed Critical Individual
Publication of CA2201117A1 publication Critical patent/CA2201117A1/fr
Abandoned 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
    • D21C9/1026—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

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Wood Science & Technology (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)

Abstract

Des eaux résiduaires acides et alcalines provenant d'une installation de blanchiment contiennent des quantités différentes de matières inorganiques et organiques ainsi qu'une teneur en sels variable. Si on mélange ces eaux résiduaires acides et alcalines, cela complique la séparation des différentes substances du flux de processus industriel lors d'un traitement ultérieur et produit aussi de plus grandes quantités d'eaux résiduaires, ce qui est un désavantage avec des procédés visant à concentrer les substances chimiques produites par une telle installation de blanchiment. D'autres problèmes découlent aussi de la formation d'inscrustations dans des surfaces échangeuses de chaleur. L'invention concerne un procédé amélioré, permettant de traiter des eaux résiduaires de processus industriel qui proviennent d'une installation de blanchiment et consistant à concentrer séparément dans des évaporateurs les flux acide et alcalin de ce processus industriel à réduire la teneur en sels du flux acide par électrodialyse et à soumettre à une combustion le flux alcalin. Ce procédé permet de limiter la quantité d'eau recyclée et d'éviter des problèmes liés aux équipements de traitement tout en contribuant à un degré supérieur de concentration des substances chimiques, même si le blanchiment implique d'utiliser du dioxyde de chlore (ECF).
CA002201117A 1994-10-05 1995-10-03 Procede de traitement separe des eaux residuaires acides et alcalines provenant d'une installation de blanchiment Abandoned CA2201117A1 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
SE9403372-7 1994-10-05
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
SE9502169-7 1995-06-14
US191495P 1995-06-20 1995-06-20
US001,914 1995-06-20
US000,139 1995-06-20

Publications (1)

Publication Number Publication Date
CA2201117A1 true CA2201117A1 (fr) 1996-04-18

Family

ID=26662147

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002201117A Abandoned CA2201117A1 (fr) 1994-10-05 1995-10-03 Procede de traitement separe des eaux residuaires acides et alcalines provenant d'une installation de blanchiment

Country Status (8)

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

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
EP0863113A1 (fr) * 1997-03-07 1998-09-09 Akzo Nobel N.V. Procédé pour le traitement d'eau résiduaire
CA2282849C (fr) 1997-03-07 2004-07-13 Akzo Nobel N.V. Procede de traitement des eaux residuaires
WO2001032561A1 (fr) * 1999-11-02 2001-05-10 Shell Internationale Research Maatschappij B.V. Procede de purification d'eaux usees d'origine industrielle provenant d'un processus de production d'oxyde de propylene
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
NO971504L (no) 1997-04-03
BR9509188A (pt) 1997-12-30
FI971605A0 (fi) 1997-04-16
FI971605A (fi) 1997-04-16
WO1996011299A1 (fr) 1996-04-18
AU3712195A (en) 1996-05-02
EP0784721A1 (fr) 1997-07-23
JPH10506964A (ja) 1998-07-07
NO971504D0 (no) 1997-04-03

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Legal Events

Date Code Title Description
EEER Examination request
FZDE Dead