Anaerobic reactors with biofilter and different diameter-length ratios in cassava starch industry wastewater treatment

Engenharia Agrícola

Kathia R. Kunzler²  Simone D. Gomes¹  Pitágoras A. Piana¹  Douglas G. B. Torres¹  Marcio A. Vilas Boas¹  Maria H. F. Tavares¹ 

[1] ,Instituto Federal do Paraná Centro Cívico Assis Chateaubriand PR ,Brasil

关键词: biodigestion;    organic load;    piston flow;    biodigestão;    carga orgânica;    fluxo em pistão;   

DOI  :  10.1590/S0100-69162013000400003

来源: SciELO

【 摘 要 】

The use of anaerobic reactors with media support in the treatment of wastewater from the cassava starch industry has emerged as a viable option because it allows the application of high organic loads and a significant reduction of the HDT needed for the treatment. This research aimed at studying the process of biodigestion in two anaerobic reactors with bamboo support, in the treatment of effluent of cassava starch, by evaluating their performance. The two reactors used present the following diameter: length ratio, 1:6 and 1:3. The organic loads applied to the systems were 0.519, 1.156, 1.471, 3.049, 4.347, 4.708 and 5.601g.L-1.d-1. Regarding the efficiency of removal of COD, TS and TVS, no statistically significant differences were obtained between the reactors. The two systems evaluated showed a stable behavior with respect to the VA/TA (volatile acidity/total alkalinity) for all submitted loads. The reactors tended to the maintenance of biogas production as a function of consumed COD for the last three organic loads applied, indicating an ability to withstand higher organic loads.

【 授权许可】

CC BY   
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