Tyagi, Rajeshwar Dayal; Meunier, Nathalie et Blais, Jean-François 
ORCID: https://orcid.org/0000-0003-3087-4318
(1996).
Simultaneous sewage sludge digestion and metal leaching - effect of temperature.
Applied Microbiology and Biotechnology
, vol. 46
, nº 4.
pp. 422-431.
DOI: 10.1007/BF00166240.
Résumé
The effect of temperature on the simultaneous sewage sludge digestion and metal leaching process was studied in laboratory bioreactors of 20 l working volume. The results thus obtained showed that the process can be employed efficiently for metal solubilization, elimination of indicator microorganisms and sewage sludge stabilization at temperatures between 10°C and 30°C. Rates of pH reduction, sulfur oxidation, growth of thiobacilli, elimination of indicator microorganisms and solids degradation were found to decrease with temperature. Low metal solubilization efficiency was observed at 10°C; however, metals were solubilized to below the recommended level. The solubilization of organic matter and nutritive elements (N, P and K) was not significantly affected by the variation in temperature. The fertilizer value of sludge after leaching and digestion did not change significantly and remained the same irrespective of temperature.
| Type de document: | Article |
|---|---|
| Mots-clés libres: | oxidation; organic matter; sludge; sewage; leaching |
| Centre: | Centre Eau Terre Environnement |
| Date de dépôt: | 03 févr. 2021 20:52 |
| Dernière modification: | 18 févr. 2022 19:15 |
| URI: | https://espace.inrs.ca/id/eprint/11177 |
Gestion Actions (Identification requise)
 |
Modifier la notice |