UY35634A - METHOD TO TREAT EFFLUENTS AND PROCESS WATERS - Google Patents

METHOD TO TREAT EFFLUENTS AND PROCESS WATERS

Info

Publication number
UY35634A
UY35634A UY0001035634A UY35634A UY35634A UY 35634 A UY35634 A UY 35634A UY 0001035634 A UY0001035634 A UY 0001035634A UY 35634 A UY35634 A UY 35634A UY 35634 A UY35634 A UY 35634A
Authority
UY
Uruguay
Prior art keywords
white liquor
process waters
effluent
calcium
calcium carbonate
Prior art date
Application number
UY0001035634A
Other languages
Spanish (es)
Inventor
Ristolainen Matti
Original Assignee
Upm Kymmene Corp
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=51263416&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=UY35634(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Upm Kymmene Corp filed Critical Upm Kymmene Corp
Publication of UY35634A publication Critical patent/UY35634A/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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • 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
    • C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • 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
    • D21C11/0007—Recovery of by-products, i.e. compounds other than those necessary for pulping, for multiple uses or not otherwise provided for
    • 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)
    • 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
    • D21C11/0071—Treatment of green or white liquors with gases, e.g. with carbon dioxide for carbonation; Expulsion of gaseous compounds, e.g. hydrogen sulfide, from these liquors by this treatment (stripping); Optional separation of solid compounds formed in the liquors by this treatment
    • 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
    • D21C11/04—Regeneration of pulp liquors or effluent waste waters of alkali lye

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Paper (AREA)
  • Treating Waste Gases (AREA)

Abstract

Método para tratar efluentes y aguas del proceso en una fábrica de pulpa o una fábrica de papel, qu e comprende: - introducir licor blanco carbonatado en un efluente o agua del proceso (3) que contiene calcio disuelto, - permitir que el calcio precipite en forma de carbonato de calcio y - separar el carbonato de calcio precipitado (7) del efluente o el agua del proceso. El licor blanco carbonatado se obtiene poniendo en contacto el licor blanco (2) con gas que contiene dióxido de carbono (1), como por ejemplo gas de escape de un horno de cal.Method for treating effluents and process waters in a pulp mill or paper mill, which includes: - introducing carbonated white liquor into an effluent or process water (3) containing dissolved calcium, - allowing calcium to precipitate in calcium carbonate form and - separate the precipitated calcium carbonate (7) from the effluent or process water. The carbonated white liquor is obtained by contacting the white liquor (2) with gas containing carbon dioxide (1), such as exhaust gas from a lime kiln.

UY0001035634A 2013-07-01 2014-06-27 METHOD TO TREAT EFFLUENTS AND PROCESS WATERS UY35634A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20135723A FI124769B (en) 2013-07-01 2013-07-01 Process for treatment of wastewater and process water

Publications (1)

Publication Number Publication Date
UY35634A true UY35634A (en) 2015-01-30

Family

ID=51263416

Family Applications (1)

Application Number Title Priority Date Filing Date
UY0001035634A UY35634A (en) 2013-07-01 2014-06-27 METHOD TO TREAT EFFLUENTS AND PROCESS WATERS

Country Status (3)

Country Link
FI (1) FI124769B (en)
UY (1) UY35634A (en)
WO (1) WO2015001186A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022193294A1 (en) * 2021-03-19 2022-09-22 Kemira Oyj A method for removing metal ions from effluents and process waters

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2315743A (en) * 1996-07-31 1998-02-11 Ecc Int Ltd Treating paper plant effluent

Also Published As

Publication number Publication date
FI20135723A (en) 2015-01-02
FI124769B (en) 2015-01-30
WO2015001186A1 (en) 2015-01-08

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Legal Events

Date Code Title Description
110 Patent granted

Effective date: 20221011