Odour Treatment and Monitoring

Although intended to help protect the environment, pumping, water purification and sludge treatment stations can themselves be a source of visual, auditory or olfactory pollution, particularly when they are located in towns, residential areas or tourist destinations. Veolia Water Solutions & Technologies helps municipal clients respond to odour concerns and control wastewater odours at and around treatment plants.

Odour Treatment and Monitoring

Electronic Monitoring

The "electronic nose network", OdoWatch®, continuously merges odour data with incoming weather data to display odour plumes on an on-screen map of the site and its surroundings. The system identifies main odour sources and can distinguish between site-generated odours and those originating from other sources.

With weather forecast data, OdoWatch® can project odour impact up to 24 hours beforehand, enabling the operator to take appropriate steps to prevent the predicted impact.

Process Solutions


Aquilair is a physical and chemical deodorisation process in which gaseous molecules are transformed to a liquid phase.


Alizair is a "green," biological odour removal system that uses bio-filtration to oxidize odourising molecules in a liquid medium.

These methods are incorporated during the design stage for new installations but can also easily be added to existing plants.

N.B. The information contained in this entry is provided by the above supplier, and does not necessarily reflect the views and opinions of the publisher