Ozone-boosted wastewater treatment clears tough pollutants

Water technology company

Ozone-boosted wastewater treatment clears tough pollutants

Xylem’s Leopold Oxelia optimises wastewater treatment for discharge
into sensitive waters and direct potable reuse according to the Switzerland-based
company. Xylem claims pollutants like personal care products, active pharmaceuticals
and hormone disrupting compounds can be removed cost effectively from a water stream
using Xylem’s Leopold Oxelia.

The company says this multi-barrier removal opens up more options for water
reuse, including industrial use, groundwater recharge, agriculture and even direct
potable reuse. The system uses ozone to oxidise organic pollutants to be digested by
microorganisms in the filtration system. “Unlike other treatment systems, the compounds
are not just concentrated in another waste stream – they are destroyed,” said product
manager with Xylem Anton Callery.

Xylem claims the new system makes effluent suitable for direct discharge into the
most sensitive aquatic ecosystems.


It claims also that ozone-enhanced, biologically active filtration has lower capital
costs than reverse osmosis-based systems and, because the ozone technology do not
produce another waste stream requiring further treatment, operations are simpler and
more cost efficient.


Tightened regulations, such as Switzerland’s, recently imposed requirement
through federal water protection laws of treatment of “contaminants of emerging
concern” require advanced systems to reduce trace organics. Xylem says its latest
product “can be used to upgrade existing wastewater treatment plants to meet new

It says Leopold Oxelia is suitable for municipal wastewater tertiary applications of
more than 5 Ml/d.

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