Title:
【発明の名称】プロセス用水の処理方法
Document Type and Number:
Japanese Patent JPH08508546
Kind Code:
A
Abstract:
A method of treating process water containing metal ions in connection with bleaching pulp of ligno-cellulose-containing material. The process water is brought into contact with an alkaline liquid, which preferably also contains sulphide, whereby metal ions precipitate in the form of difficultly soluble metal compounds. The precipitated metal compounds thereafter are separated from the process water.
Inventors:
Wolf, Germgard
Norden, Solvaig
Norden, Solvaig
Application Number:
JP52196994A
Publication Date:
September 10, 1996
Filing Date:
February 17, 1994
Export Citation:
Assignee:
Syundos Defibrator Industries Actie Evorague
International Classes:
C02F1/64; D21C9/10; D21C11/00; (IPC1-7): D21C9/10; C02F1/64
Attorney, Agent or Firm:
Yoshio Kawaguchi (2 outside)