ES2040150T3 - Reduccion de compuestos organicos halogenados en liquido de blanqueo gastado. - Google Patents
Reduccion de compuestos organicos halogenados en liquido de blanqueo gastado.Info
- Publication number
- ES2040150T3 ES2040150T3 ES199191850090T ES91850090T ES2040150T3 ES 2040150 T3 ES2040150 T3 ES 2040150T3 ES 199191850090 T ES199191850090 T ES 199191850090T ES 91850090 T ES91850090 T ES 91850090T ES 2040150 T3 ES2040150 T3 ES 2040150T3
- Authority
- ES
- Spain
- Prior art keywords
- halogenated organic
- organic compounds
- reduction
- bleaching liquid
- spent bleaching
- 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.)
- Expired - Lifetime
Links
Classifications
-
- 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
- C02F1/025—Thermal hydrolysis
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- 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
- Y10S210/902—Materials removed
- Y10S210/908—Organic
-
- 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
- Y10S210/902—Materials removed
- Y10S210/917—Color
-
- 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
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- 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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Detergent Compositions (AREA)
Abstract
ESTA INVENCION SE REFIERE A UN METODO PARA REDUCIR EL CONTENIDO DE COMPUESTOS ORGANICOS HALOGENADOS EN EL LICOR BLANQUEANTE AGOTADO DEL BLANQUEADO DE UN MATERIAL CONTENIENDO LIGNOCELULOSA CON COMPUESTOS CONTENIENDO HALOGENO, DONDE EL LICOR BLANQUEANTE AGOTADO, EN UNA ETAPA DONDE NO TOMA PARTE NINGUNA DECOLORACION O DESLIGNIFICACION DE LA PASTA ESENCIAL, SE MANTIENE EN UN PH DE DESDE 2.5 HACIA ALREDEDOR DE 10, Y DONDE EL PERIODO DE RESIDENCIA Y LA TEMPERATURA SON SELECCIONADOS DE TAL FORMA QUE LA CANTIDAD DE SUSTANCIAS ORGANICAS HALOGENADAS DISUELTAS EN EL LICOR BLANQUEANTE GASTADO ES REDUCIDA AL MENOS EN UN 30%.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9001481A SE9001481L (sv) | 1990-04-23 | 1990-04-23 | Reduktion av halogenorganiska foereningar i blekeriavlopp |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2040150T3 true ES2040150T3 (es) | 1993-10-01 |
Family
ID=20379282
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES199191850090T Expired - Lifetime ES2040150T3 (es) | 1990-04-23 | 1991-04-08 | Reduccion de compuestos organicos halogenados en liquido de blanqueo gastado. |
Country Status (10)
Country | Link |
---|---|
US (1) | US5149442A (es) |
EP (1) | EP0454642B1 (es) |
AT (1) | ATE87283T1 (es) |
CA (1) | CA2040867C (es) |
DE (1) | DE69100049T2 (es) |
ES (1) | ES2040150T3 (es) |
FI (1) | FI96973C (es) |
NO (1) | NO177607C (es) |
PT (1) | PT97456B (es) |
SE (1) | SE9001481L (es) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5120448A (en) * | 1990-09-19 | 1992-06-09 | Dorica Josesph G | Removal of aox frm bleach plant mill effluents by ph shift using the alkalinity/acidity sources available at the mill |
ATE161804T1 (de) * | 1992-09-06 | 1998-01-15 | Solvay Deutschland | Verfahren zur behandlung von organischen stoffen, insbesondere chlororganische verbindungen enthaltenden abwässern aus der epichlorhydrinherstellung |
DE4229355A1 (de) * | 1992-09-06 | 1994-03-10 | Solvay Deutschland | Verfahren und Vorrichtung zur Behandlung von organische Stoffe, insbesondere chlororganische Verbindungen enthaltenden Abwässern aus der Epichlorhydrinherstellung |
DE4229356A1 (de) * | 1992-09-06 | 1994-03-10 | Solvay Deutschland | Verfahren und Vorrichtung zur Behandlung von organische Stoffe, insbesondere chlororganische Verbindungen enthaltenden Abwässern aus der Epichlorhydrinherstellung |
US5362402A (en) * | 1994-03-25 | 1994-11-08 | General Electric Company | Enhanced remediation of aqueous compositions contaminated with halogenated hydrocarbons |
US5575926A (en) * | 1994-03-28 | 1996-11-19 | General Electric Company | Dechlorination of chlorinated hydrocarbons by soluble iron citrate |
US5362404A (en) * | 1994-04-04 | 1994-11-08 | General Electric Company | Dehalogenation of halogenated hydrocarbons in aqueous compositions |
US5626717A (en) * | 1995-06-01 | 1997-05-06 | International Paper Company | Oxidative treatment of bleach plant effluent |
US6569284B1 (en) | 1996-09-24 | 2003-05-27 | International Paper Company | Elemental-chlorine-free bleaching process having an initial Eo or Eop stage |
US6322768B1 (en) | 1998-09-29 | 2001-11-27 | International Paper Company | Recovery of chlorine dioxide from gas streams |
US8753477B2 (en) * | 2010-03-23 | 2014-06-17 | International Paper Company | BCTMP filtrate recycling system and method |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA575636A (en) * | 1959-05-12 | E. Smedberg George | Bleaching of wood pulps | |
US3251731A (en) * | 1963-02-11 | 1966-05-17 | Andrew J Gard | Bleaching of wood pulp with a sequestering agent and hydrogen peroxide |
FI45574C (fi) * | 1970-05-11 | 1972-07-10 | Kymin Oy Kymmene Ab | Menetelmä selluloosapitoisten aineiden valkaisemiseksi. |
DE2219504C2 (de) * | 1972-04-21 | 1974-10-03 | Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt | Mehrstufenbleiche von Zellstoffen mit erheblich reduziertem Chloreinsatz |
DE2538673C2 (de) * | 1975-08-30 | 1986-01-16 | Degussa Ag, 6000 Frankfurt | Bleichaufschluß von Zellstoff mit erheblich reduziertem Chloreinsatz |
SE420430B (sv) * | 1978-02-17 | 1981-10-05 | Mo Och Domsjoe Ab | Forfarande for blekning och extraktion av lignocellulosahaltig material med peroxidhaltiga blekmedel |
US4259149A (en) * | 1978-05-03 | 1981-03-31 | Hooker Chemicals & Plastics Corp. | Method of reducing waste stream pollutants by the control and separation of waste contaminants from a multi-stage cellulosic bleaching sequence |
SE414411B (sv) * | 1978-10-25 | 1980-07-28 | Eka Ab | Sett att rena utslepp fran blekerier med ultrafiltrering |
FR2457339A1 (fr) * | 1979-05-25 | 1980-12-19 | Interox | Procede pour la delignification et le blanchiment de pates cellulosiques chimiques et semi-chimiques |
SU903429A1 (ru) * | 1980-06-05 | 1982-02-07 | Центральный научно-исследовательский институт бумаги | Способ отбелки древесной массы |
FR2520397A1 (fr) * | 1982-01-28 | 1983-07-29 | Centre Tech Ind Papier | Procede pour le traitement de pates papetieres chimiques |
FR2582692B1 (fr) * | 1985-05-29 | 1987-12-11 | Atochem | Traitement de pates papetieres chimiques par le peroxyde d'hydrogene en vue de leur blanchiment |
US4826568A (en) * | 1985-08-05 | 1989-05-02 | Interox (Societe Anonyme) | Process for delignification of cellulosic substances by pretreating with a complexing agent followed by peroxide prior to kraft digestion |
DE3620980A1 (de) * | 1986-06-23 | 1988-01-14 | Schott Glaswerke | Kontinuierliches mehrstufen-verfahren zur aufbereitung der bleicherei-abwaesser aus der zellstoffproduktion |
US4732650A (en) * | 1986-09-15 | 1988-03-22 | The Dow Chemical Company | Bleaching of cellulosic pulps using hydrogen peroxide |
FR2613388B1 (fr) * | 1987-04-02 | 1990-05-04 | Atochem | Procede de blanchiment de pates |
US4874521A (en) * | 1988-10-18 | 1989-10-17 | Boise Cascade Corporation | Pulp mill effluent color removal process |
US4946556A (en) * | 1989-04-25 | 1990-08-07 | Kamyr, Inc. | Method of oxygen delignifying wood pulp with between stage washing |
-
1990
- 1990-04-23 SE SE9001481A patent/SE9001481L/xx not_active Application Discontinuation
-
1991
- 1991-04-08 AT AT91850090T patent/ATE87283T1/de not_active IP Right Cessation
- 1991-04-08 DE DE9191850090T patent/DE69100049T2/de not_active Expired - Fee Related
- 1991-04-08 EP EP91850090A patent/EP0454642B1/en not_active Expired - Lifetime
- 1991-04-08 ES ES199191850090T patent/ES2040150T3/es not_active Expired - Lifetime
- 1991-04-19 NO NO911568A patent/NO177607C/no not_active IP Right Cessation
- 1991-04-19 FI FI911907A patent/FI96973C/fi active
- 1991-04-19 CA CA002040867A patent/CA2040867C/en not_active Expired - Fee Related
- 1991-04-23 PT PT97456A patent/PT97456B/pt not_active IP Right Cessation
- 1991-04-23 US US07/689,503 patent/US5149442A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
FI96973C (fi) | 1996-09-25 |
NO911568D0 (no) | 1991-04-19 |
CA2040867C (en) | 1997-04-01 |
FI911907A (fi) | 1991-10-24 |
NO177607B (no) | 1995-07-10 |
CA2040867A1 (en) | 1991-10-24 |
EP0454642A1 (en) | 1991-10-30 |
NO177607C (no) | 1995-10-18 |
DE69100049D1 (de) | 1993-04-29 |
US5149442A (en) | 1992-09-22 |
SE9001481L (sv) | 1991-10-24 |
PT97456B (pt) | 1998-08-31 |
FI96973B (fi) | 1996-06-14 |
NO911568L (no) | 1991-10-24 |
EP0454642B1 (en) | 1993-03-24 |
SE9001481D0 (sv) | 1990-04-23 |
FI911907A0 (fi) | 1991-04-19 |
DE69100049T2 (de) | 1993-09-16 |
PT97456A (pt) | 1992-01-31 |
ATE87283T1 (de) | 1993-04-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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