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Even with a Biological System, Don't Treat before Collecting. Concepts and Design Guidelines for Four Air Ventilation and Collection
Author: Philip Wolstenholme
Preprint, IWA 2013
The increasing improvement in efficiency of foul air treatment systems, which can often achieve 99.9 percent odor removal, is wasted unless the fugitive emissions are well contained and captured at the source. Off-site odors are recurrently the result of such fugitive or non-captured emissions.
This paper presents a comparison of stack emissions versus area or fugitive source emissions, illustrated by air dispersion modeling examples.
It then discusses current design guidelines for foul air containment and collection systems by including theoretical and practical examples on the following topics:
Negative pressures in covered vessels
Ventilation rates to meet design codes
Materials of construction