Back to Evoqua
Back to Home
Skip Navigation LinksEvoqua Water Technologies > en > Brands > Vortisand > Recreational: high-performance filter for pools and aquatic centers

Recreational: high-performance filter for pools and aquatic centers

Remove particles down to less than one micron in size, resulting in lower chlorine consumption.

​Faster and Cleaner Than Other Filtration Systems

The Vortisand® filtration system is ideal for commercial aquatic applications and has several advantages over conventional sand filters. These advantages include; a stainless steel vessel (FRP also available), fast filtration rates, an automated PLC system and reduced backwash water consumption.

Submicron Filtration

The Vortiand submicron filtration performance is much finer than traditional pool and aquatic sand filters, which typically operate at 30 micron filtration. Thanks to its cross-flow and microsand technology, Vortisand filters are capable filtering particles below 1 micron in size (including the removal of bacteria and organics), resulting in lower chlorine consumption.

By choosing a Vortisand system, substantial savings can be realized in the following areas:

  • Water: The Vortisand system requires up to 50% less water during a backwash cycle compared to conventional media filters

  • Energy: Backwashing is done using cold water from the water supply line rather than hot and treated water from the pool

  • Chemicals: The Vortisand filter's superior performance means chemical requirements can be reduced by up to 50%. With a net reduction of solids in suspension, it may no longer be necessary to use coagulant. Additional chemical savings are achieved by using cold water from the water supply for backwash.

  • Maintenance: In addition to offering superior filtration performance, the low operating cost of the Vortisand filter gives it an undeniable competitive advantage. Backwash and rinse cycles are performed automatically, without supervision. Further savings in maintenance are achieved by less frequent water balancing (hardness & alkalinity).

  • Footprint: Vortisand systems require up to 80% less space than traditional multi-media filters

Less Chlorine = More Comfort


By using significantly less chlorine, your swimmers and aquatic park visitors will notice less eye and skin irritations. The benefits also include a reduction of the chlorine odor, a concern for indoor aquatic facilities.

Learn how an ecomuseum zoo utilized high efficiency filtration to keep their otter bassin clean.

 Common Pool Filtration Methods

Human fluids such as perspiration, surface skin/dirt contamination, urine and fecal matter are the major health concerns for aquatic centers and public pools. Outdoor pools face a different challenge, as well as filtering human fluids they can be contaminated with animal droppings, algae, debris (leaves) and rain. Aquatic centers undergo a number of filtration processes in order to keep its water clean. Below you will find a list of common water filtration methods;

Physical Methods: Screens, regenerative media filtration and high efficiency submicron media filtration.
Membrane Methods: Microfiltration, ultrafiltration, nanofiltration and reverse osmosis.
Chemical Methods: Chemical additions, clarification, deionisation and softening
Disinfection Methods: Chlorine disinfection, ozone disinfection and UV
Biological Methods: Anaerobic or aerobic bacteria.

 Health Concerns & Minimizing Risk

Public health concerns for pools and aquatic centers;

  • Microbial contamination

  • Pathogens and illnesses (ear infections, rashes, cryptosporidiosis, giardiasis, bacteria and viruses)

  • Organic and inorganic DBPs (disinfection byproducts)

  • Dermal absorption and the inhalation of volatile organic DBP chemicals

  • Skin, eye, lung irritations

So how do we minimize the risk in running into the above list of health concerns? Here are some simple tips on how you can recognize a potential risk at your local aquatics center.

  • If you can smell the chlorine, there is most probably too much of it.

  • Swimming in an indoor environment that includes good ventilation is improtant in reducing the inhalation of chemicals.

  • Avoid aquatic centers that do not insist on cleanliness (such as showering prior to swimming).

 Interested In Learning More

 Contact A Water Expert Today

Looking to improve your water treatment efficiencies and reduce your water treatment costs? Contact our team of water experts to learn how the Vortisand systems can help meet your water objectives!