Method and apparatus for sludge reduction in an aerobic waste water treatment system

Provided is a method and apparatus for treating organic waste water, which are capable of realizing compact equipment by reducing the quantity of a sludge to be treated. Organic waste water (A) is subjected to an aerobic biological treatment in biological treatment tank (3). Then, solution (B) obtai...

Full description

Saved in:
Bibliographic Details
Main Authors MIURA, MASAHIKO, HASEGAWA, SUSUMU, AKASHI, AKIRA, KATSURA, KENJI, FUKUI, TAKAHIRO
Format Patent
LanguageEnglish
French
German
Published 23.06.1999
Edition6
Subjects
CHEMISTRY
METALLURGY
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Online AccessGet full text

Cover

More Information
Summary:Provided is a method and apparatus for treating organic waste water, which are capable of realizing compact equipment by reducing the quantity of a sludge to be treated. Organic waste water (A) is subjected to an aerobic biological treatment in biological treatment tank (3). Then, solution (B) obtained by the treatment in the biological treatment tank (3) is solid-liquid separated into treated water (C) and sludge (D) in precipitation tank (5). A part of the sludge (D) separated in the precipitation tank (5) is returned to the biological treatment tank (3) through route (6). A part (E) of the sludge separated in the precipitation tank (5) is concentrated by concentration device (8). Thereafter, the concentrated sludge (E) is solubilized by thermophilic bacteria in solubilizing tank (10).
Bibliography:Application Number: EP19980309163