ODOUR DISPERSION MODELLING
WHY DO I NEED AN ODOUR DISPERSION MODEL?
Odour dispersion modelling is a mathematical tool. It predicts the extent of the impact of odour emissions across a period of time. Usually, three to five years. Modelling is helpful when planning a new facility or modifying an existing site. It can also determine the odour impact on a proposed development which is near existing odour sources.
For new and modified sites, you must consider odour effectively. Otherwise, your new site could adversely affect the amenity of the local community. Regulators are well aware of this. An odour dispersion model can confirm whether your site will meet local and national requirements. This could be critical to your bid for planning permission and environmental permits.
Understanding potential odour issues means you can allow for them in the design process. So, you can effectively ‘design issues out’. This is easier and cheaper than fixing problems once your site is operational. It also means you are less likely to receive odour complaints. The local community may perceive your site in more positive terms too.
WHAT’S INVOLVED?
At Silsoe Odours, our in-house modellers conduct all our odour dispersion modelling. We use the latest versions of ADMS or AERMOD. Our modelling considers a significant number of factors specific to your site. This includes both meteorological and non-meteorological elements.
Meteorological Inputs
- Wind speed
- Wind direction
- Air temperature
- Atmospheric stability
Non-Meteorological Inputs
- Receptor locations
- Receptor source
- Receptor characteristics
- Time-variable emissions
- Topography
- Surface roughness
ITERATIVE MODELLING
This piggery selected 2-metre stack heights based on data provided by odour dispersion modelling.
Dispersion modelling allows you to test various scenarios before putting them into practice. This is known as iterative modelling. We can tweak and compare specific variables. In doing so, we can help you identify the best approach to minimise offsite odour impacts. For example, we might model three scenarios. The first might have a 20-metre tall stack, the second a 30-metre tall stack, and the third a 40-metre tall stack. You will subsequently have all the information you need. You can use it to select the best stack height for effective odour management and control.
SPEAK TO OUR ODOUR MODELLING SPECIALISTS
So, please get in touch if you are:
- planning a new site
- involved with modifying an existing site
- a developer of a site close to an existing odour source
Our odour specialists have extensive experience and are happy to discuss your needs. In the first instance, you can reach us on 01525 860222. Alternatively, email paul.outen@silsoeodours.co.uk for more information or click the button below.
Article originally published 15th March 2022
Revised by Paul Outen 28th February 2024
