Title:
CIRCULAR FLOW AERATOR
Document Type and Number:
Japanese Patent JP3900997
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reduce an amount of holdback carriers of microorganisms to be periodically replenished by reducing the wear of the holdback carriers.
SOLUTION: The circular flow aerator includes: an aeration tank 2 to store water to be treated to which the carriers holding microorganisms are added; diffuser pipes 3 which are arranged in the aeration tank 2, blow off fine air bubbles and produce the circulating flow of the water to be treated in the aeration tank 2 by an airlift effect caused by the fine air bubbles; and guide plates 10 which are provided below the diffuser pipes 3 and prevents the collision of the upward flow of the water to be treated to the diffuser pipes 3.
Inventors:
Teruhiro Kitazawa
Masayuki Kojima
Masayuki Kojima
Application Number:
JP2002105926A
Publication Date:
April 04, 2007
Filing Date:
April 09, 2002
Export Citation:
Assignee:
Hitachi Plant Technology Co., Ltd.
International Classes:
C02F3/08; B01F33/40; C02F3/20; (IPC1-7): C02F3/08; B01F3/12; B01F13/02; B01F15/00; C02F3/20
Domestic Patent References:
| JP10216758A | ||||
| JP4078490A | ||||
| JP2002079283A | ||||
| JP2002018477A | ||||
| JP7008982A | ||||
| JP2001198586A |