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A cooling tower does more than just cool. It also acts as an air-scrubber for removing dust, pollen and pollution circulating through the system.....
How dirty is your cooling water


VORTISAND FEATURES
Sonitec has developed and marketed a unique filter for polishing potable, process and wastewater.
VORTISAND® is a high performance automatic backwashable sand filter that ingeniously combines centrifugal separation and sand filtration in the same vessel.
VORTISAND® achieves very fine filtration (down to 0.45 micron) at high rate, using 80 to 90% less water for backwashing compared to traditional sand filters.
VORTISAND® provides a filtration 10 to 20 times finer than traditional sand filters. Continuous filtering removes suspended solids.
VORTISAND® provides clean, clear water when used in conjunction with chemical treatment programs that chemical treatment alone cannot guarantee. Greater benefits result from very fine particle removal.
VORTISAND® is also very effective as a pretreatment for RO, DI systems.
The VORTISAND® filters have proven themselves for more than 35 years and are the result of many years of research and development.

HOW DOES IT WORK?


Filtration down to 0.45 micron

 VORTISAND® uses a tangential inlet to introduce water with a swirling action. Centrifugal force helps to remove the suspended solids and significantly increases the effective filter surface within the tank. This creates a concave surface on the sand media and increases the total filtration surface area.

This turbulence produces a sustained cleaning action that forces the suspended solids to accumulate on the inside walls of the tank. As a result, much finer sand can be used without any clogging problems. The water, now largely free of impurities, is then filtered through the media and subsequently collected.
Water passes through the sand media to the under drain at the bottom the vessel, allowing the top layer media to capture the contaminants. The purpose of putting the top layer of sand in motion is to use the compacted fine sand as a barrier for the ultra fine particles, so that the particles are filtered out at the surface and not deeply into the sand like conventional filters.

Contaminants trapped above the sand are removed using an automatic backwash cycle which requires much less water and a shorter operating time than traditional sand filters. This process contributes to longer cycles and much finer filtration levels.

When a preset pressure differential is reached, a backwash cycle is initiated to reverse the flow through the vessel and discharge contaminants to waste line.

The filter media is permanent, rechargeable by a backwash at a minimum flow rate of 15 gpm per square foot of surface area.


ADDITIONAL FEATURES
VORTISAND® filters give you clear advantages for your different applications!

Exceptionally efficient filtration with no clogging
High flow rates through smaller systems
Durability
Easy to install in new or retrofit applications
Maintenance free operation
Low horsepower requirement
Variable and full flow systems
Fully automatic systems with adjustable OIU settings
Filtration up to 20 gpm/sq.ft. (4 times greater than conventional filters)
Low backwash flow rate and volume of water
Compact configuration for optimal space utilization
 
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