To measure odor, we measure its perception by the human nose. The nose is excited by the fluctuations in concentration rather than by the mean concentration. Because of its sensitivity, the nose perceives the concentration peaks, which can often exceed the mean value.
Models used for odor dispersion must thus also take into account the odor concentration peaks, and not only the mean concentration that most models estimate. It is particularly important to take into account the wind eddies responsible for turbulent diffusion.
The Gaussian Model is one of the most widely used models in the world to study dispersion phenomena, notably by the EPA (Environmental Protection Agency). This model estimates pollutant concentrations at any point in space based on various factors:
The Puff Model was designed to simulate instantaneous releases into the atmosphere. This model is used to predict the impact of an accident (tanker truck, holding tank leak or broken pipeline) to allow effective emergency planning.
Odotech is a leading designer and producer of odor measuring and monitoring systems. Its services department carries out odor impact and related studies for municipalities, waste disposal operators, waste water treatment plants, and various industrial facilities, worldwide.
Odotech Inc. 3333 Queen Mary Road, Suite 301 Montréal (Québec) H3V 1A2 Canada Phone: (514) 340 5250 Fax: (514) 340 5211 [email_address] www.odotech.com Odotech SAS 20 rue de la Villette 69328 Lyon Cedex France Phone : +33 (0) 4 26 68 51 56 Fax : +33 (0) 4 26 68 51 57 email@example.com www.odotech.fr