ProEconomy’s Birgitta Bedford has received a PHd in Legionella Control from Cranfield University.
ProEconomy believe this to be the first PHd in Legionella control.
Her PHD specifically covered Legionella control by temperatures and by copper and silver ionisation.
PHD In Legionella Control – The Findings
Her findings confirmed that Legionella is not controlled by maintaining temperatures of above 50 degrees at hot and below 20 degrees at cold outlets. It highlights specific issues at blended outlets because hot water is mixed with cold water to prevent scalding. However, this creates temperatures at which Legionella grows rapidly.
Legionella was however controlled by copper and silver ionisation systems installed in 10 of the UK hospitals that Birgitta studied at levels as low as 150 parts per billion of copper and 20 parts per billion of silver at outlets.
Elevated PH was originally considered an issue in the efficacy of copper and silver ionisation. However, this was shown not to hinder its efficacy in controlling Legionella within water systems.
If you have any questions please contact Birgitta at birgitta@proeconomy.com. Alternatively, read more about legionella control with ProEconomy’s Orca system here.
