Indoor Air Quality in Healthcare Estates: Aspergillus – What’s required to filter it? – Including best filtration practice

Article on a paper titled ‘Filtering Airborne Aspergillosis’ by Don Donovan – Camfil Farr Ireland

Indoor air quality in hospitals

There is much written about the prevention of Nosocomial Invasive Aspergillosis, how outbreaks can happen and the effect that it can have in immune suppressed patients.

While this paper looks briefly at Aspergillous its main focus considers filtration steps to prevent airborne Aspergillus entering the hospital ventilation systems but as requested it will also consider other fungi spores in its recommendation.

Many commentators have suggested that HEPA (High Efficiency Particle Air) filters should be installed as a final stage of filtration and this has now been written into many hospital guidelines and standards. This document will review this in more detail.

In compiling this report I felt it was worthwhile taken into account the general indoor air quality and how it can be improved by the installing the optimum filter selection while at the same time taking into account the cost of energy, labour and waste disposal.

In most cases the particle size of different contaminant are known however to understand how these particles are actually filtered this document includes a section on the principles of filtration.

Over the years, many of the standards and regulations that govern air filters have been updated, and this document will review these and look at why they have changed for the better. The new standards have more emphasis now on the protecting of people’s health (IAQ) and the conservation of Energy.   At the end of this report recommendations are put forward.  READ THE FULL REPORT HERE.

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