The effect of the influent COD concentration on the performance of anaerobic fluidized bed reactors treating winery wastewaters from grape-red wine (GRWW) and guava wine production (GWW) was studied at laboratory scale. Two reactors were used: one treating GRWW (AFB1) and the other processing GWW (AFB2). The behaviour of these reactors packed with Chilean zeolite as biomass immobilization support was compared at mesophilic temperature (35 °C). Influent COD varied from 1-24 g L-1 and the HRT was maintained constant at 1 day throughout the experiment. During the experiment, influent and effluent pH, TVFA, COD and methane gas production were determined. COD removal efficiency increased with the influent COD up to a maximum of around 19 g L -1 for GRWW and up to around 22 g L-1 for GWW due to the increase of the concentration of phenols. Process performance was slightly better with guava winery wastewater than with grape-red winery wastewater due its lower phenolic content. During the period of non-inhibition the methane yield was virtually constant.
|Number of pages||8|
|Journal||Chemical and Biochemical Engineering Quarterly|
|Publication status||Published - 1 Jul 2010|
Montalvo, S., Guerrero, L., Borj, R., Cortés, I., Sánchez, E., & Colmenarejo, M. F. (2010). Effect of the influent COD concentration on the anaerobic digestion of winery wastewaters from grape-red and tropical fruit (Guava) wine production in fluidized bed reactors with Chilean natural zeolite for biomass immobilization. Chemical and Biochemical Engineering Quarterly, 219-226. https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=77954647786&origin=inward