Environmental Protection

Pima County Wastewater Plant Installs Six E-Noses

The first permanent U.S. installation of a unique technology that can “smell” an odor problem before it occurs recently went online in Tucson, Ariz., according to the technology provider, N.A. Water Systems, a Veolia Water Solutions & Technologies company.

OdoWatch® is now operational at the Roger Road Wastewater Reclamation Facility,

where six electronic noses calibrated to smell odors like the human nose are installed at the facility. The unit performs real-time air dispersion modeling to generate a color-coded plume indicating the level of odor on a map of the site.

The system quantifies odor, and if the level begins to approach the threshold that can be

perceived as a nuisance by a human nose, an alert notifies operators that actions must be taken to mitigate the situation. OdoWatch® can also be used to determine which odor source at a facility is causing the alert.

Pima County’s OdoWatch system is a first for the United States. Pima County has also requested an OdoWatch System proposal for its Ina Road Wastewater Reclamation Facility.

N.A. Water Systems is a provider of solutions for air, water, and wastewater issues ranging from regulatory compliance assistance to complete turnkey installation of treatment systems.

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