ATA348674A - Verfahren zur herabsetzung des kalziumgehaltes natriumbasischer abfall-sulfitlaugen - Google Patents

Verfahren zur herabsetzung des kalziumgehaltes natriumbasischer abfall-sulfitlaugen

Info

Publication number
ATA348674A
ATA348674A AT348674A AT348674A ATA348674A AT A348674 A ATA348674 A AT A348674A AT 348674 A AT348674 A AT 348674A AT 348674 A AT348674 A AT 348674A AT A348674 A ATA348674 A AT A348674A
Authority
AT
Austria
Prior art keywords
reducing
calcium content
based waste
sodium based
waste sulfite
Prior art date
Application number
AT348674A
Other languages
English (en)
Other versions
AT334196B (de
Original Assignee
Spring Chemicals Ltd
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
Application filed by Spring Chemicals Ltd filed Critical Spring Chemicals Ltd
Application granted granted Critical
Publication of AT334196B publication Critical patent/AT334196B/de
Publication of ATA348674A publication Critical patent/ATA348674A/de

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
    • D21C11/02—Regeneration of pulp liquors or effluent waste waters of acid, neutral or alkaline sulfite lye
AT348674A 1973-05-03 1974-04-26 Verfahren zur herabsetzung des kalziumgehaltes natriumbasischer abfall-sulfitlaugen AT334196B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US356716A US3873415A (en) 1973-05-03 1973-05-03 Process for reducing the amount of calcium contained in sodium-base waste sulfite liquor by the use of a sodium and/or an ammonium compound and additional calcium

Publications (2)

Publication Number Publication Date
AT334196B AT334196B (de) 1976-01-10
ATA348674A true ATA348674A (de) 1976-04-15

Family

ID=23402643

Family Applications (1)

Application Number Title Priority Date Filing Date
AT348674A AT334196B (de) 1973-05-03 1974-04-26 Verfahren zur herabsetzung des kalziumgehaltes natriumbasischer abfall-sulfitlaugen

Country Status (9)

Country Link
US (1) US3873415A (de)
JP (1) JPS5013603A (de)
AT (1) AT334196B (de)
BR (1) BR7403580D0 (de)
CA (1) CA1017505A (de)
CS (1) CS174131B2 (de)
DD (1) DD112795A5 (de)
DE (1) DE2419326C3 (de)
FR (1) FR2228133B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI972954A (fi) * 1997-07-11 1999-01-12 Sunds Defibrator Pori Oy Menetelmä sulfaattimassan valmistuksessa syntyvän jätelipeän käsittelemiseksi

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1834845A (en) * 1929-09-23 1931-12-01 Courtaulds Ltd Treatment of waste liquors
US2644748A (en) * 1946-11-04 1953-07-07 Chempatents Inc Sulfite waste treatment process
US2739039A (en) * 1951-08-24 1956-03-20 Allied Chem & Dye Corp Treatment of waste ammonium sulfite pulping liquors
BE517582A (de) * 1952-02-21
US3812235A (en) * 1968-02-12 1974-05-21 Spring Chemicals Ltd Process for treating magnesium-base waste sulfite liquor
DE2006326C3 (de) * 1969-02-12 1975-08-07 Spring Chemicals Ltd., Toronto, Ontario (Kanada) Verfahren zur Behandlung von Sulfitablaugen
CA928009A (en) * 1969-12-27 1973-06-12 Mita Akio Method for manufacturing sulfite pulp cooking liquor from sulfite pulp spent liquor
US3794718A (en) * 1971-09-22 1974-02-26 Spring Chemicals Ltd Process for reducing the amount of calcium contained in magnesium-base waste sulfite liquor by the use of an ammonium compound and additional calcium
US3740309A (en) * 1971-09-22 1973-06-19 T Lahtvee Process for treating ammonia-base waste sulfite liquor

Also Published As

Publication number Publication date
FR2228133B1 (de) 1979-08-03
DE2419326B2 (de) 1979-02-15
US3873415A (en) 1975-03-25
FR2228133A1 (de) 1974-11-29
DE2419326A1 (de) 1974-11-14
CA1017505A (en) 1977-09-20
CS174131B2 (de) 1977-03-31
JPS5013603A (de) 1975-02-13
AT334196B (de) 1976-01-10
DE2419326C3 (de) 1979-10-18
DD112795A5 (de) 1975-05-05
BR7403580D0 (pt) 1974-11-19

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee
ELJ Ceased due to non-payment of the annual fee