This filtration tower is designed to remove suspended solids dispersed in water.
The standard treatment method is a single-layer system, where filter sand gets layered on top of supporting gravel. For more effective filtration, a dual-layer systems with anthracite on top of the filter sand, or further triple-layer systems by adding garnet under filtration sand are also available.
Ceramics can also be used in place of filter sand to speed up the filtration process.