Title:
APPARATUS FOR TREATING WASTE WATER
Document Type and Number:
Japanese Patent JPS52134257
Kind Code:
A
Abstract:
Present physical-chemical methods to treat aqueous pulp mill effluent are known to be effective in diminishing undesirable constituents contributing to color, toxicity and COD but are effective in removing BOD substances without an additional biological oxidation treatment. By means of this invention, an economic physical-chemical treatment process is provided for diminishing the amount of undesirable constituents contributing to color, COD, toxicity and BOD by contacting the pulp mill effluent with polybasic fibrous material at a pH less than 9.5 and then separating the effluent from the spent fibrous material containing the undesirable constituents. The spent fibrous material can then regenerated in an alkaline solution and refused several times to treat more aqueous pulp mill effluent.
Inventors:
PIEERU FURANSOWA REPUTORU
SAN HON FUI
JIYATSUKU EDOMONDO KARURU
SAN HON FUI
JIYATSUKU EDOMONDO KARURU
Application Number:
JP5114777A
Publication Date:
November 10, 1977
Filing Date:
May 02, 1977
Export Citation:
Assignee:
PULP PAPER RES INST
International Classes:
B01J20/24; C02F1/28; C02F11/121; C02F11/123; C02F11/126; (IPC1-7): B01D15/00; C02C5/02