The Jagüel Wastewater Treatment Plant in Punta del Este, Uruguay, underwent an odor control improvement plan ahead of a major renovation.

    A study by Ambiente et Odora measured H₂S emissions, modeled odor dispersion with CALPUFF, and identified key sources. Corrective actions included improved ventilation in centrifuge rooms, replacement of biofilters with granular activated carbon filters, and dosing ferric chloride into the slurry. These measures effectively reduced odors during the summer season, with no reported complaints.

A. Irigoyen*¹, D. Berger¹, A. Anton², & C. Diaz²

¹CIEMSA

²Ambiente et Odora

   Meteorological Eulerian models like WRF, combined with Gaussian and Lagrangian dispersion models, are commonly used to assess odor impact from emissions measured by dynamic olfactometry, with four specific models (PMSS, GRAL, CALMET/CALPUFF, and AERMOD) tested for performance evaluation.

   The choice of model must be tailored to the specific environmental conditions, source characteristics and project objectives, so no one model is universally superior to others. This nuanced understanding of model applicability is vital to the effectiveness of odor management strategies in various environments, including urban and industrial settings.

R. Cerdá¹*, O. Carter², C. Dupuis³, L. Ricolleau³, C. Pozzi⁴, D. Valiño¹

1 SUEZ SMART ENVIRONMENTAL SOLUTIONS, Spain
2 SUEZ ADVANCED SOLUTIONS UK,
3 ARIA TECHNOLOGIES – SUEZ Air & Climate, France
4ARIANET – SUEZ Air & Climate, Italy

* ruben.cerda@suez.com