Mechanisms of bio-aerosol transmission in sanitary plumbing system airflows

Michael Gormley, David Kelly, Thomas J. Aspray

Research output: Contribution to conferencePaper

Abstract

Biological aerosols (bio-aerosols) are readily transported on airstreams through drainage and sewer systems and those containing microbial pathogens are recognised as contributors to infection spread within buildings. These microorganisms can be released in liquid droplets from human or environmental sources. Evaporation results in the formation of droplet nuclei (1-5 μm diameter), which, by remaining airborne for longer, facilitates the transport of microorganisms through the air.

In the event of a defect in the sanitary plumbing system, a cross-transmission route exists which connects one part of a building to another. These are short-burst transient events which are difficult to detect and predict. Using slit-to-agar sampling, the time dependent characteristics of these events were recorded and analysed, confirming the correlation between the transport of viable pathogens and transient fluid flow in a sanitary plumbing system.
Original languageEnglish
Publication statusPublished - 7 Jul 2016
Event14th International Conference of Indoor Air Quality and Climate - Ghent, Belgium
Duration: 3 Jul 20168 Jul 2016

Conference

Conference14th International Conference of Indoor Air Quality and Climate
Abbreviated titleIndoor Air 2016
CountryBelgium
CityGhent
Period3/07/168/07/16

Keywords

  • Bioaerosols
  • Plumbing Systems
  • Slit-to Agar sampling
  • bioaerosol kinetics

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