SEWAGE TREATING DEVICE

PROBLEM TO BE SOLVED: To attempt the quality and amt. of a desired microorganism without affecting the growth of a granule by denitrifying the water treated in an anaerobic tank in a denitrification tank, nitrating the denitrified water in an aerobic tank, circulating the nitrated water to the denit...

Full description

Saved in:
Bibliographic Details
Main Authors YAI HIROYUKI, UEKI KYOKO, MOCHIDA ETSUO, HARADA HIDEKI, RARITSUTO KUMAARU AGURAWARU
Format Patent
LanguageEnglish
Published 02.09.1997
Edition6
Subjects
CHEMISTRY
METALLURGY
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Online AccessGet full text

Cover

More Information
Summary:PROBLEM TO BE SOLVED: To attempt the quality and amt. of a desired microorganism without affecting the growth of a granule by denitrifying the water treated in an anaerobic tank in a denitrification tank, nitrating the denitrified water in an aerobic tank, circulating the nitrated water to the denitrification tank and denitrifying the water. SOLUTION: Sewage is passed upward through a sludge bed in an anaerobic tank 1 and anaerobically treated, a denitrification tank 2 is provided above the anaerobic tank 1, and the water treated in the anaerobic tank 1 is denitrified. The org. matter remaining in the water treated in the denitrification tank 2 is decomposed, and the org. or ammoniacal nitrogen is nitrated into nitrite or nitrate nitrogen in an aerobic tank 5. The nitrated water is further circulated to the denitrification tank 2 and denitrified. Consequently, the quality and amt. of the desired microorganism are attained.
Bibliography:Application Number: JP19960059963