Title:
PROCESS FOR TREATING SOLUTION FROM BLEACHING STAGE
Document Type and Number:
Japanese Patent JPS5266701
Kind Code:
A
Abstract:
The method of treating a chlorine-based total bleachery effluent in which only a chlorine and sodium salts are used in the bleach sequence comprising the steps of adding aluminum ion to said effluent in an amount sufficient to precipitate substantially all of the organics and suspended solids therein, seaparating the solids from said effluent, electrodialyzing the treated effluent to provide two effluent streams, one containing 200 to 600 parts per million sodium chloride which can be returned to the bleachery, and a second concentrated stream containing 5 to 10% by weight sodium chloride, evaporating said concentrated stream to a concentration of about 25% sodium chloride by weight, and electrolyzing said concentrated sodium chloride solution to produce chlorine gas, sodium hydroxide, and sodium hypochlorite.
Inventors:
HENRII EE FUREMONTO
Application Number:
JP13786476A
Publication Date:
June 02, 1977
Filing Date:
November 18, 1976
Export Citation:
Assignee:
CHAMPION INT CORP
International Classes:
C01B7/03; C01D3/04; C02F9/00; D21C9/10; D21C11/00; (IPC1-7): C01B7/02; C01D3/04; C25B1/34; D21C11/00