Water Filtration Systems (Evoqua/Vortisand)

Vortisand® filtration systems use exclusive VortiJetTM diffusers to generate cross-flow patterns that sweep the surface of the media. This sweeping motion causes a portion of the water to flow parallel to the top media layer, allowing for high filtration rates while preventing fouling and channeling.

Contaminants trapped in suspension and within the microsand media (depth filtration) are easily removed using an automatic backwash cycle. The system’s backwash cycle requires less flow and a shorter duration than traditional sand or multi-media filters. The result is a technology that removes particles down to submicron levels at 4 to 5 times the hydraulic flow rate of other media filters, while requiring up to 50% less water for backwash.

Vortisand Classic

Vortisand is a high performance automatic backwashable cross-flow microsand filter which filters down to the submicron level: 10 to 50 times finer than other media filters. Vortisand combines a cross-flow condition and sand filtration in the same vessel. The technology was designed for various applications such as HVAC side-stream filtration, process water, rain-harvesting water and more.


Sonitec-Vortisand, the worlwide leader in cross-flow microsand submicron filtration, just released its new generation of filters designed for higher flow rates. The footprint is substantially reduced to occupy only 15% of the floor space required by multimedia (MM) filters, therefore reducing maintenance and facilitating transportation.The new Vortisand H2F filter offers the same fine submicron filtration process as the classic Vortisand sold for 20 years and installed in over 2,500 sites around the world.

About Vortisand

Evoqua’s Vortisand has been synonymous with water filtration, serving the recreational, municipal, industrial water markets since 1986.The award-winning Vortisand vertical & horizontal units are considered high performance Cross Flow Microsand Submicron Filtration Systems. It is a high capacity, high flow automatic backwashable media filter that combines cross flow dynamics with microsand media to achieve submicron filtration at speeds up to 5 times faster than traditional multimedia filters. Vortisand has become a leader in filtration for various industries including: pharmaceutical, petroleum refining, biotechnology, pulp & paper, automotive, general HVAC and more.