The Jagüel wastewater treatment plant in Punta del Este, Uruguay, conducted an extensive study to address odor issues ahead of its renovation. Corrective actions significantly reduced odors, with no complaints reported during the summer.
Through field measurements and advanced modeling, improvements such as enhanced ventilation in centrifuge rooms, activated carbon filters, and ClFe3 dosing in sludge were implemented, ensuring the system's effective performance.
A. Irigoyen 1*, D. Berger 1, A. Anton 2 & C. Diaz 2
1 CIEMSA, Uruguay.
2 Ambiente et Odora S.L., Spain
* Airigoyen@ciemsa.com.uy
Competing interests: The author has declared that no competing interests exist.
Academic editor: Carlos N Díaz.
Content quality: This paper has not been peer reviewed.
Citation: A. Irigoyen, D. Berger, A. Antón, C. Díaz, 2024, improvements in odour impact management of a wastewater treatment plant based on previous simulation studies, solution analysis, implementation and assessment of results, ODORA24 Conference, Barakaldo, Spain, www.olores.org.
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ISBN: pending.
Keyword: WWTP. Sewage, Modeling, Mitigation, hydrogen sulfide.
Abstract
The Jagüel Wastewater Treatment Plant (WWTP), located in Punta del Este, Uruguay, operates within an area of significant real estate development. After 10 years of operation, a major revamping of the plant is planned, with a particular focus on the odor control systems. The challenge involves operating low-efficiency equipment, new environmental requirements, and mitigating potential impacts on forthcoming projects until the renovation is complete.
To gain a clear understanding of the emission levels and their potential effects, we collaborated with Ambiente et Odora to conduct a comprehensive study. This study assessed the significance of each emission. We conducted field measurements of hydrogen sulfide gas (H2S) and flow rates from point emission sources. Odor dispersion was modeled using the Lagrangian CALPUFF method, incorporating real environmental and meteorological data from the CALMET3D model. The CIEMSA team managed the emission measurements and operational control of the system. A map detailing the odor impact in the surrounding area was generated.
Based on the findings, we implemented corrective actions to the odor control system. The initial measures included enhancing the ventilation in centrifuge rooms and replacing the biofilters with Granular Activated Carbon (GAC) filters, previously installed as backups. The second phase involved dosing ClFe3 into the slurry.
The system operated effectively throughout the summer season, demonstrating a significant reduction in environmental odor and receiving no complaints related to odor nuisance during that time.
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