Abstract—This work presents the 2D modelling of a
fermenting step during composting of a sewage sludge/bark
mixture at the Aureilhan (France) WWTP. For this study the
temporal evolution of the temperature has been studied because
it is the composting key parameter, especially for achieving the
compost sanitization. Thus, the modelling results have been
compared with experimental results. Fermenting windrows are
being subject to weather conditions, we took into account the
temperature and humidity of the outside air in the model as
boundary conditions. Results indicated that the model is
consistent with windrow A but differed from the experimental
results for windrow B. The weather conditions had a strong
impact on the temperature profile during fermentation,
especially the maximum temperature. Indeed, the maximum
temperatures did not exceed 35°C for windrow A (winter) while
they were around 50°C for windrow B (summer). On the other
hand, the temperature rise in the windrows was faster for the
experimental measurements than for the modelled results.
Finally, the experimental and modelling results showed that the
warmest temperatures were towards the center of the windrow.
This trend is consistent with the suction aeration system.
Index Terms—Sludge composting, modelling, temperature, meteorological conditions.
The authors are with the Universite de Pau & Pays Adour, E2S UPPA, LaTEP, PAU, France (e-mail: firstname.lastname@example.org, email@example.com, firstname.lastname@example.org, email@example.com).
Cite: Julie Bachelart, Cécile Hort, Vincent Platel, and Laurent Moynault, "Modelling Sewage Sludge Composting in WWTP: Influence of Meteorological Conditions," International Journal of Environmental Science and Development vol. 11, no. 12, pp. 535-539, 2020.Copyright © 2020 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).