Xylem launches Leopold Ultrascreen in ANZ

Water technology company Xylem has announced an exclusive agreement with Nuove Energie to distribute a cutting-edge tertiary disk filter system for wastewater re-use and discharge requirements in Australia and New Zealand.

The Ultrascreen disk filter will be distributed by Xylem under the company’s Leopold brand, bringing another option from Xylem to customers who have a particular need for tertiary treatment to meet stringent requirements for both discharge and re-use applications.

Philipp Raichle, Xylem’s product & applications manager – Filtration for the Oceania region, said, “The Leopold Ultrascreen offers innovative, cutting-edge technology for customers with a real need for reliable tertiary filtration.”

The precision-woven AISI 316L stainless steel screens are capable of handling high hydrostatic heads for increased hydraulic loadings and can be easily chemically treated to remove colloidal materials that permanently foul other disk media.

The ‘dynamic tangential filtration’ operating principle, combined with stainless steel mesh construction, delivers good performance at high loading rates with a good level of durability.

The filter is validated by Title 22 California Code of Regulations to treat flows up to 16 gallons per minute/square foot (gpm/ft²) of filter area — which is up to 2.5 times higher than the flow rates tolerated by other media disk filter systems, according to the company — and is capable of handling spikes in total suspended solids (TSS) loading rates of up to 150 mg/L without clogging, as compared to 50–70 mg/L for cloth disk filters.

Being compact and modular, the filter system is simple to install and requires a minimal amount of space. The filter can be easily incorporated into a treatment system including upstream biological treatment and downstream disinfection to provide an efficient multiple-barrier solution. With multiple adjustable parameters, including disk rotational speed, wash cycle timing and influent level in the feed zone, the disk filter enables operators to meet a variety of operating conditions.