Development and application of kinetic model on biological anoxic/aerobic filter.
An up-flow biological anoxic filter (BANF) has been developed to achieve high removal performance of suspended solids and BOD removal as well as nitrogen. With a view to understand treatment mechanisms, we developed a filtration model that incorporates filtration, deposit scoring and biological reactions simultaneously. The biological reactions consist of four types of reaction; dissolution of organic particles; utilization of dissolved organic matter; denitrification; and self-degradation of bacteria. Whereas the reactor is generally assumed to be a plug flow reactor in the filtration model, it is assumed a continuous-flow stirred tank reactor (CSTR) in the model of biological reactions. The hydrodynamics is supposed that the filter bottom (the portion sludge settled) is a CSTR and the filter bed (the portion filled with filter media) consists of number of CSTR of equal size arranged in series. The model obtained in this study was verified and simulated using experimental results taken from a pilot-scale plant and predicted the experimental data well, applying to design and operate BANF.
Kim
Youngnoh
Y
The Ombudsman of Korea, New Imkwang Bled., Uijuro 81, Seodaemun-Gu, Seoul 120-705, Republic of Korea.
Tanaka
Kazuhiro
K
Lee
Yong-Woo
YW
Chung
Jinwook
J
D000332:Aerobiosis; D000465:Algorithms; D019149:Bioreactors; D003198:Computer Simulation; D005374:Filtration / Q000295:instrumentation / Q000379:methods; D007700:Kinetics; D008962:Models, Theoretical; D012722:Sewage / Q000737:chemistry; D018508:Water Purification / Q000295:instrumentation* / Q000379:methods*
D012722:Sewage