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KMID : 1024519940030030263
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Journal of the Environmental Sciences
1994 Volume.3 No. 3 p.263 ~ p.271
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A Study on Biofilm Detachment in an IFBBR
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Kim Dong-Seog
Park Young-Seek
Park Dong-Keun
Song Seung-Koo
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Abstract
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A detachment of biofilm was investigated in an inverse fluidized bed biofilm reactor(IFRBR). The biofilm thickness, 5 and the bioparticle density, Pm were decreased by the increase of Reynolds number, Re and the decrease of biomass concentration, h. The correlations were expressed as =6l.6+16.33-0.004Re and Ppd=0.3+0.027- 2.93x no by multiple linear regression analysis method. Specific substrate removal rate, q was derived by F/M ratio and biofilm thickness as q=0.44.+0.82F/M-5.Ix10$-4^{}$. Specific biofilm detachment rate, bds was influenced by FIM ratio and Reynolds number as =-0.26+0.26F/M+ 2.17Re. Specific biofilm deachment rate in an IFBBR was higher than that in a FBRR(fluidized bed biofilm reactor) because of the friction between air bubble and the bioparticles. Key Words : biofilm detachment mechanism, inverse fluidized bed biofilm reactor, shear stress, liquid
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KEYWORD
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biofilm detachment mechanism, inverse fluidzed bed biofilm reactor, shear stress, liquid circulation velocity
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