Brewery wastewater treatment using anaerobic inverse fluidized bed reactors.

Two anaerobic inverse fluidized bed reactors were utilized to evaluate organic matter removal from brewery wastewater, applying different OLR and testing two support materials. Hydrodynamic tests varying liquid flow and solid concentration were developed on the supports in order to establish operational conditions. A batch colonization stage was applied using 25% active volume of extendosphere and triturated polyethylene as support materials. The reactors were subsequently operated continuously with stepwise increments in organic loading rate until limiting conditions was reached. For the supports studied, IFBR technology was suitable for organic matter removal present in brewery wastewater with COD removal efficiencies greater than 90%. The reactor with triturated polyethylene support showed an excellent COD removal with OLR values up to 10 g COD/Ld, whereas the reactor with extendosphere support had an excellent hydrodynamic and biologic behavior working with OLR values up to 70 g COD/Ld.

[1]  M. Jawed,et al.  Microbial composition assessment of anaerobic biomass through methanogenic activity tests , 1999 .

[2]  J J Heijnen,et al.  Control of heterotrophic layer formation on nitrifying biofilms in a biofilm airlift suspension reactor. , 1997, Biotechnology and bioengineering.

[3]  Michel Roustan,et al.  Methane yield as a monitoring parameter for the start-up of anaerobic fixed film reactors. , 2002, Water research.

[4]  L. Gorris,et al.  Early stages in biofilm development in methanogenic fluidized-bed reactors , 1990, Applied Microbiology and Biotechnology.

[5]  Graciela Gonzalez,et al.  Development of biofilms in anaerobic reactors , 1992, Biotechnology Letters.

[6]  R. Moletta,et al.  Influence of biomass accumulation on bed expansion characteristics of a down-flow anaerobic fluidized-bed reactor. , 1998, Biotechnology and bioengineering.

[7]  T. Beveridge.  Mechanism of gram variability in select bacteria , 1990, Journal of bacteriology.

[8]  Oscar Monroy,et al.  Anaerobic treatment of low concentration waste water in an inverse fluidized bed reactor , 2000 .

[9]  Avijit Dasgupta,et al.  Industrial and Hazardous Waste Treatment , 1991 .

[10]  A. E. Greenberg,et al.  Standard methods for the examination of water and wastewater : supplement to the sixteenth edition , 1988 .

[11]  Serge R. Guiot,et al.  Modeling and analysis of layered stationary anaerobic granular biofilms. , 1997, Biotechnology and bioengineering.

[12]  R. Moletta,et al.  Application of the down-flow fluidized bed to the anaerobic treatment of wine distillery wastewater , 1998 .