Application of Biofilm Reactors

While types of biofilm model reactors have been summarized in Fig. 3.42, 

The FBBR applied in biological waste water treatment (e.g., Atkinson, 1980), enzyme technology (e.g., Coughlin et al., 1975), and some fermentations (Baker et al., 1980). Higher values of mass transfer are attained together with increased interfacial areas ( lis 3 10 m ni ) and biomass concentration (x 40 kg m ), uniform distribution of solids, and so on (Baker et al., 1980). 

The old quick vinegar process using packings of beechwood chips as support material for cells to increase the area of contact with the feed liquor trickling through. 

Animal tissue culturing, in which cells are growing adhering to a surface in the presence of unstirred layers of medium (trays). 

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The chapter focuses on membrane bioreactors where a UF or MF membrane is employed for biomass retention and filtration. However, membrane bioreactors where the membrane provides a support for biofilms are an alternative form of membrane bioreactor for wastewater treatment application. Two processes, in particular, the membrane-aerated biofilm reactor (MABR) and the extractive membrane bioreactor (EMB), have seen significant interest in recent years. Figure 36.4 shows these two technologies schematically. The application of biofilms reactors for wastewater treatment systems is advantageous in view of... 

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