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When an odour nuisance problem occurs a clear link between the operation of the
plant, the resulting emissions and the odour impacts needs to be established
before the
optimum solution can be found. By modelling the fate of the emitted material using the
most up-to-date understanding of the behaviour of the odours in the atmosphere, ADMS can
provide the link between emissions and odour impacts. This is essential to determine the
most cost-effective approach to solving odour-nuisance problems.
However, odour nuisance arising from industrial
facilities is often complex because:
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Only incomplete information on the extent
of the nuisance is available.
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Information on the source of the odour,
particularly any variation with season, plant operation etc, is limited.
CERC have carried out a wide range of
odour modelling studies using the Atmospheric Dispersion Modelling System (ADMS) for:
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The solution of odour nuisance arising
from existing wastewater treatment facilities
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The design of new wastewater treatment
facilities
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Emissions from many industrial processed
including animal rendering, oil refineries, food production, tobacco manufacture and paint
spraying
The key features of these studies are:
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The short-term concentrations that relate
to odour nuisance can be calculated directly based on an up-to-date understanding of
dispersion and do not depend on fixed conversion factors
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The effects on dispersion of complex
terrain and buildings are fully taken into account. This includes
the entrainment of material into the re-circulation zone adjacent
to a building and its subsequent spreading at ground level. This
is a critical feature in determining impacts close to buildings,
which is often neglected in dispersion modelling studies.
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CERC's expertise allows studies to be
undertaken so that the effects of limited source information and the subjectivity of
'odour nuisance' are minimised to give the optimum information from the limited available
data.
For more information, please contact
Sarah Wilkinson on (0)1223 357773 or email us directly.
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