Global water technology firm Xylem has tested its Sanitaire Gold Series membrane at a wastewater treatment plant in the Netherlands, with energy use at the plant being reduced by up to 22 per cent while delivering high quality aeration.
Swedish company Xylem, which has Sanitaire as one of its brands, says it is focused on addressing the world’s most challenging water issues and will demonstrate the Sanitaire Gold Series diffuser in action at its booth 317/418 in Hall A1 at the IFAT ENTSORGA trade show in Munich this week.
The field tests were carried out over 17 months between May 2010 and October 2011 at a municipal wastewater treatment plant run by Waterschap Noorderzijlvest in Zuidhorn, the Netherlands.
Rachel Davies, aeration product manager at Xylem, said:
“Research shows that aeration accounts for between 25 and 60 percent of the total energy consumption at a typical municipal wastewater treatment facility. Xylem’s Sanitaire Gold Series has been specifically designed to address this problem by reducing the amount of pressure and energy required to deliver high quality aeration.”
Sanitaire Gold Series can deliver this efficient performance due to the fact that it can increase the membrane density for a fixed tank area as a result of its geometry. In the Zuidhorn scenario the membrane density was increased from 24 to 63 percent by using Sanitaire Gold Series diffusers which enabled the flux to be reduced and therefore achieve a higher standard oxygen transfer efficiency (SOTE). As a result, a better standard aeration efficiency (SAE), expressed as kg O2 /kWh, was achieved.
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