
handle: 11449/122463
The aim of this work was to evaluate the influence of the brightness and the support use in a continuous fixed bed anaerobic system for “manipueira” treatment (wastewater from cassava flour production). Two glass reactors (1,55L) were used, with relationship diameter/height 1: 2,5, and plastic rings as support. The reactors presented intermittent upflow and HRT equal to 3 and 5 days with inoculum concentration of 10, 25 and 50%. Analysis of pH, COD and alkalinity were accomplished according to APHA (1995). The feed concentration varied from 700 to 6800 mg COD . For the brightness influence, the results from treatment without brightness showed be -1 L significantly better also just for 1000 mg COD L-1 days) there wasn’t significant difference, but the discovered reactor became unstable. To the support use, the treatment didn’t present significant differences. And to the inoculum concentration, 25% reached better results.
O objetivo do trabalho foi avaliar a influência da luminosidade e do uso de suporte em um sistema anaeróbio contínuo de leito fixo para o tratamento de manipueira (água residuária do processamento de mandioca). Foram utilizados reatores de vidro de 1,55L, com relação diâmetro/altura de 1:2,5, e anéis de plástico como suporte. Os reatores possuíam fluxo ascendente intermitente e TRH de 5 e 3 dias com concentrações de inóculo de 10, 25 e 50%. As determinações de pH, DQO e alcalinidade foram realizadas conforme APHA (1995) e a concentração de alimentação variou de 700 a 6800 mg DQO L-1 o tratamento sem luminosidade apresentou resultado significativamente melhor, e nas DQO L-1 demais concentrações (TRH de 5 e 3 dias) não houve diferença significativa, sendo que o reator descoberto tornou-se instável. Quanto ao uso de suporte, os tratamentos não apresentaram diferenças significativas.
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
tratamento anaeróbio, support, cassava wastewater, brightness, anaerobic treatment, luminosidade, manipueira, suporte
tratamento anaeróbio, support, cassava wastewater, brightness, anaerobic treatment, luminosidade, manipueira, suporte
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