Dynamic olfactometry studies, based EN 13725 standard, have become the main tool for the assessment and control of odour emission from odorous processes. Neutralization has been widely used in many plants to try to decrease this impact.

   In the present study, different oxidizing agents for odour abatement were applied in a wastewater plant from an industrial process. Dynamic olfactometry have been used to assess the odour efficiency abatement rate of these agents.

M.A. Cid ¹, J.V. Martínez ¹, A. Segura 1, R. Cerdá ¹*, V. Bescós ², L.C. Gutiérrez ²

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   Deodorization of Waste Water Treatment Plants is becoming an increasingly important need to avoid conflicts with the neighboring environment. The primary and secondary clarifiers, due to their dimensions and concentrations of stinging gases, are units that, so far, have been quite abandoned, concerning deodorization.

   The traditional solution is based on total coverage and deodorization of the indoor faul air, with a number of air renovations per hour between 3 to 8, depending on designs. This solution is expensive, both in terms of investment and maintenance. In the present article an alternative is shown, covering exclusively the channels of the clarifiers and deodorizing them with small units of chemical adsorption, obtaining an efficiency of approximately 90% with respect to the open decanter.

J. Balfagón*, J.L. Recaj

Alphachem S.L., Spain

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