scholarly journals Performance characteristics of an aerated agitated vessel under mechanical foam control.

1991 ◽  
Vol 24 (2) ◽  
pp. 188-194 ◽  
Author(s):  
Masami Yasukawa ◽  
Masayuki Onodera ◽  
Kazuaki Yamagiwa ◽  
Akira Ohkawa
Keyword(s):  
Performance Characteristics ◽  
Agitated Vessel ◽  
Mechanical Foam ◽  
Foam Control

Performance characteristics of a tower fermenter with mechanical foam control

2007 ◽  
Vol 56 (1) ◽  
pp. 97-107 ◽  
Author(s):  
Satoshi Takesono ◽  
Masami Yasukawa ◽  
Masayuki Onodera ◽  
Kohji Izawa ◽  
Kazuaki Yamagiwa ◽  
...  
Keyword(s):  
Performance Characteristics ◽  
Mechanical Foam ◽  
Foam Control ◽  
Tower Fermenter

scholarly journals Operational characteristics of aerated agitated vessels under mechanical foam control.

1991 ◽  
Vol 24 (4) ◽  
pp. 531-535
Author(s):  
Masami Yasukawa ◽  
Masayuki Onodera ◽  
Kazuaki Yamagiwa ◽  
Akira Ohkawa
Keyword(s):  
Operational Characteristics ◽  
Mechanical Foam ◽  
Foam Control

Biological treatment of highly foaming pharmaceutical wastewater by modified bubble-column under mechanical foam control

2000 ◽  
Vol 42 (3-4) ◽  
pp. 331-337 ◽  
Author(s):  
K. Yamagiwa ◽  
M. Yoshida ◽  
A. Ohkawa ◽  
S. Takesono
Keyword(s):  
Activated Sludge ◽  
Biological Treatment ◽  
Bubble Column ◽  
Bubble Columns ◽  
Pharmaceutical Wastewater ◽  
Sludge Treatment ◽  
Mechanical Foam ◽  
Breaking Mechanism ◽  
Foam Control ◽  
Sludge Settling

Activated sludge treatment of highly foaming pharmaceutical wastewater was carried out with modified bubble columns equipped with a mechanical foam-breaker (MFRD). The geometry of the bubble column was modified based on the foam breaking mechanism of the MRFD in order to improve the foam breaking capacity and hence to enhance the treatment capacity. Four types of modifications were examined. The activated sludge treatment of the wastewater with the modified columns was successfully carried out with COD removal efficiency about 90% at BOD loading of 4 g/Ld. Little effect of the mechanical foam control on the sludge settling characteristics was observed. The column modification significantly reduced the power required for foam control. The maximum power decrement of 75% was attained. Furthermore, oxygen transfer was found to be facilitated in the modified bubble columns. The results are expected to be helpful for economic and effective treatment of highly foaming organic wastewater.

Performance characteristics of mechanical foam-breakers fitted to a stirred-tank reactor

2003 ◽  
Vol 78 (1) ◽  
pp. 48-55 ◽  
Author(s):  
Satoshi Takesono ◽  
Masayuki Onodera ◽  
Masanori Yoshida ◽  
Kazuaki Yamagiwa ◽  
Akira Ohkawa
Keyword(s):  
Performance Characteristics ◽  
Stirred Tank ◽  
Stirred Tank Reactor ◽  
Tank Reactor ◽  
Mechanical Foam

Mechanical foam control in a stirred draft-tube bioreactor

2008 ◽  
Vol 34 (2) ◽  
pp. 87-96 ◽  
Author(s):  
Akira Ohkawa ◽  
Nobuyuki Sakai ◽  
Hiroshi Imai ◽  
Kazuo Endoh
Keyword(s):  
Draft Tube ◽  
Mechanical Foam ◽  
Foam Control

scholarly journals Performance Characteristics of a Stirred-Tank Reactor with a Mechanical Foam-Breaker Utilizing Shear Force

2004 ◽  
Vol 37 (12) ◽  
pp. 1488-1496 ◽  
Author(s):  
Satoshi Takesono ◽  
Masayuki Onodera ◽  
Masanori Yoshida ◽  
Kazuaki Yamagiwa ◽  
Akira Ohkawa
Keyword(s):  
Shear Force ◽  
Performance Characteristics ◽  
Stirred Tank ◽  
Stirred Tank Reactor ◽  
Tank Reactor ◽  
Mechanical Foam

LIQUID HOLDUP OF FOAM AS AN INDEX FOR MECHANICAL FOAM-CONTROL IN GAS-LIQUID CONTACTOR

1985 ◽  
Vol 14 (1) ◽  
pp. 99-102
Author(s):  
Akira Ohkawa ◽  
Yasuyuki Ueda ◽  
Nobuyuki Sakai
Keyword(s):  
Liquid Holdup ◽  
Mechanical Foam ◽  
Foam Control
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