Leopold - Engineered Filter Media
Whether mono-media deep bed, dual media, or tri-media, Xylem carefully evaluates influent water characteristics and process requirements. Next the right configuration of media, with the effective size and uniformity coefficient to give energy efficient, consistent and long term performance is provided. Leopold Engineered Filter Media products are processed in a unique, stat-of-the-art facility specifically designed to produce anthracite filter media with low uniformity coefficients (UC). What truly sets Xylem apart from most of other media processors is moisture reduction prior to screening. Reducing the moisture in the raw feedstock greatly enhances screening efficiencies, enabling more anthracite to be shipped – and less water – and to produce multiple distinct media sizes all with UCs below 1.30.
Better anthracite gives many benefits matched to other media types
Leopold low-UC anthracite products enable plants to operate longer before backwashing and use less filtered water. They also extend the life of the filter before the media must be changed out and lead to improvements in turbidity removal.
Produced from the highest quality anthracite to assure hardness, durability and performance, Leopold Engineered Filter Media is NSF-approved and meets or exceeds AWWA standards for granular filter media.
- Multiple distinct anthracite media sizes with uniformity coefficients below 1.30
- Less water shipped by weight than other anthracite media
- NSF-approved, meets or exceeds AWWA standards
- Made from high-quality anthracite and processed to meet the most demanding physical and chemical specifications
- Match all media, sand, anthracite, garnet and/or granular activitated carbon
Technical Information
General Information
Flume types suitable
- Gravel types available Silica and high density
- Media types available Anthracite, silica sand, high density sand, expanded clay
- Standards met NSF 60, AWWA B100 Standard for Filter Materials
- Types of backwash suitable Water only, sequential air followed by water, concurrent air/water and sustained air/water
System Components
- Anthracite MOHS` hardness 2.7+
- Anthracite acid solubility Less than 5%
- Anthracite apparent specific gravity 1.55 to 1.70 approximate
- Anthracite standard effective size ranges 0.5 mm to 2.5 mm approximate
- Anthracite uniformity coefficient From 1.3 and higher
- High density sand acid solubility Less than 5%
- High density sand apparent specific gravity >3.8
- High density sand standard effective size ranges 0.2 mm to 0.7 mm approximate
- High density sand uniformity coefficient From 1.6 and higher
- Media effective size tolerance +/-0.05 mm
- Silica gravel acid solubility Less than 5% to 25% depending on particle size
- Silica gravel saturated surface dry specific gravity >2.5
- Silica gravel standard size ranges 0.3 to 1.5 inches (0.8 mm to 38 mm) approximate
- Silica sand acid solubility Less than 5%
- Silica sand apparent specific gravity >2.5
- Silica sand standard effective size ranges 0.35 mm to 3 mm approximate
- Silica sand uniformity coefficient From 1.4 and higher
Xylem offers a range of advanced wastewater and water solutions to help operators around the world achieve their required water effluent while delivering optimal performance, reliable operations and substantial energy savings no matter what industry or application. Working with customers, Xylem listens, learns, and adapts to local environments, ensuring the best possible design, customized to meet their specific needs. Below are some recommended industries and applications.