Influência da temperatura sobre o desempenho do tratamento anaeróbio de esgoto
The objective of this work was to develop a relation between the efficiency of anaerobic digestion and the two most important operational variables: temperature and sludge age, generating an empirical expression to estimate the digestion efficiency at any temperature and sludge age. To evaluate the...
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| Principais autores: | , |
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| Formato: | article |
| Idioma: | pt_BR |
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| Endereço do item: | https://repositorio.ufrn.br/handle/123456789/30545 |
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| Resumo: | The objective of this work was to develop a relation between the efficiency of anaerobic digestion and the two most important operational variables: temperature and sludge age, generating an empirical expression to estimate the digestion efficiency at any temperature and sludge age. To evaluate the influence of temperature on anaerobic digestion, four UASB reactors with a volume of 25 L each were used, applying temperatures of 25, 20, 15 and 12°C. Different values of the applied hydraulic retention time led to different sludge ages in the reactors. The results showed that the reactor reaches its maximum performance at a sludge age of 100 d for any temperature. By using the obtained experimental data, it was possible to develop empirical equations which allow estimation of the division of the influent COD load into fractions discharged in the effluent, converted into sludge and transformed into biogas |
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