Influence of temperature on performance of an anaerobic sequencing biofilm batch reactor with circulation applied to treatment of low-strength wastewater |
| |
| Authors: | Silvia Ainara Cardoso Agibert Mariana Bueno Moreira Suzana Maria Ratusznei José Alberto Domingues Rodrigues Marcelo Zaiat Eugênio Foresti |
| |
| Institution: | 1.Escola de Engenharia Mauá,Instituto Mauá de Tecnologia,S?o Caetano do Sul,Brazil;2.Departamento de Hidráulica e Saneamento, Escola de Engenharia de S?o Carlos,Universidade de S?o Paulo,S?o Carlos,Brazil |
| |
| Abstract: | The effect of temperature on the performance of an anaerobic sequencing biofilm batch reactor (ASBBR) with liquid-phase recirculation
was assessed. Assays were performed using a recirculation velocity of 0.20 cm/s, 8-h cycles, and an average treated synthetic
wastewater volume of 2 L/cycle with a concentration of 500 mg of Chemical Oxygen Demand (COD)/L. Operation temperatures were
15, 20, 25, 30, and 35°C. At 25, 30, and 35°C, organic matter removal efficiencies for filtered samples ranged from 81 to
83%. At lower temperatures, namely 15 and 20°C, removal efficiency decreased significantly to 61 and 65%, respectively. A
first-order model could be fitted to the experimental concentration profile values. The first-order kinetic parameter value
of this model varied from 0.46 to 0.81 h1 considering the lowest and highest temperature studied. Moreover, analysis of the removal profile values allowed fitting
of an Arrhenius-type equation with an activation energy of 5715 cal/mol. |
| |
| Keywords: | Temperature anaerobic sequencing biofilm batch reactor circulation low-strength wastewater anaerobic treatment |
| 本文献已被 PubMed SpringerLink 等数据库收录！ |
|
