Produção Nacional
Revisado por pares
Anaerobic reactors with biofilter and different diameter-length ratios in cassava starch industry wastewater treatment
2013; Sociedade Brasileira de Engenharia Agrícola; Volume: 33; Issue: 4 Linguagem: Inglês
10.1590/s0100-69162013000400003
ISSN1809-4430
AutoresKathia Regina Kunzler, Simone Damasceno Gomes, Pitágoras Augusto Piana, Douglas Guedes Batista Torres, Márcio Antônio Vilas Boas, Maria Hermínia Ferreira Tavares,
Tópico(s)Cassava research and cyanide
ResumoThe 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.
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