Gravel: The Backbone of Stable Filtration

Gravel is the foundation layer of most water treatment filters. Its primary role is to support the upper layers of media while ensuring proper flow distribution throughout the vessel. High-quality gravel prevents channeling, reduces pressure drops, and protects internal components from damage. Sepratech provides washed, graded gravel in a variety of sizes to match system design specifications and hydraulic requirements. Whether used in municipal filtration beds, industrial process water systems, or clarifiers, our gravel ensures a strong, stable base for optimal performance.

Sand: Proven Efficiency in Removing Suspended Solids

Sand is one of the oldest and most widely used filtration materials, valued for its ability to remove suspended solids through mechanical straining and depth filtration. When properly graded and installed, sand delivers consistent turbidity reduction, making it a reliable choice for drinking water plants, wastewater polishing, cooling water systems, and many industrial applications. Sepratech offers high-purity silica sand that resists breakdown, maintains consistent grain structure, and provides long filtration cycles between backwashing events.

Garnet: High-Density Media for Multi-Layer Systems

Garnet is a dense, durable media that plays a critical role in multi-media filters. Because of its high specific gravity, garnet forms the bottom layer in dual- or triple-media beds, allowing for proper stratification during backwashing. This enables deeper filtration, improved solids capture, and longer run times compared to sand-only systems. Garnet’s hardness and uniformity make it ideal for demanding industrial environments where consistent filtration performance is required. Sepratech supplies both fine and coarse grades, allowing operators to achieve precise control over filtration depth and flow characteristics.

Anthracite: Superior Filtration for Finer Particles

Anthracite is a highly effective carbon-based media used in the top layer of many multi-media filters. Its angular shape and low density create larger void spaces, improving solids capture while reducing head loss. This allows filters to operate longer between backwashes, saving time, labor, and energy. Anthracite is especially effective in polishing applications where fine particles must be removed to achieve clear, high-quality effluent. Sepratech provides anthracite that meets strict purity and hardness standards, ensuring consistent performance and long service life.