UY35634A - METHOD TO TREAT EFFLUENTS AND PROCESS WATERS - Google Patents
METHOD TO TREAT EFFLUENTS AND PROCESS WATERSInfo
- 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
Links
- 239000003643 water by type Substances 0.000 title abstract 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical group [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract 2
- 229910052791 calcium Inorganic materials 0.000 abstract 2
- 239000011575 calcium Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract 1
- 235000011941 Tilia x europaea Nutrition 0.000 abstract 1
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract 1
- 239000001569 carbon dioxide Substances 0.000 abstract 1
- 239000004571 lime Substances 0.000 abstract 1
- 229940088417 precipitated calcium carbonate Drugs 0.000 abstract 1
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.
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2315743A (en) * | 1996-07-31 | 1998-02-11 | Ecc Int Ltd | Treating paper plant effluent |
-
2013
- 2013-07-01 FI FI20135723A patent/FI124769B/en active IP Right Review Request
-
2014
- 2014-06-27 UY UY0001035634A patent/UY35634A/en active IP Right Grant
- 2014-07-01 WO PCT/FI2014/050544 patent/WO2015001186A1/en active Application Filing
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 |