Anthracite, also known as strong coal is hard and compact with a submetallic lustre. It has the highest energy density of all coals. The term refers to coal that doesn’t produce tarry or other hydrocarbon vapors when heated below ignition.
Anthracite has a carbon content ranging from 86 to 98 percent.
Hydro-Anthracite is used alone for water filtration or with various sizes of sand in dual-media filters. Its shape and density allow it to filter more efficiently, making it the perfect media for the filtration of drinking water, processed water, pool water, wastewater, industrial water, and city-based water.
- Low dry bulk density and high strength necessary for nano-filtration
- Irregular granule shapes don’t pack down as tightly as filter sand
- Filters larger particles and thickened suspended matter (producing more with less waste)ly
- Will not perform adsorption
- Longer filter runs than traditional filter sands
- Less head loss and backwashing than traditional filter sands
- Angular sediment penetrates deeper into the bed
- Thin so it penetrates deeper into the bed
- Large books/large amounts of suspended matter and particles can be removed with one media filter (quartz sand and Hydro-Hard coal)
- (using liquid under pressure) classifies at 850kg/m3 and remains above heavier media, providing a pre-filtration layer
- Lower evenness and equality coefficient results in a highly uniform bed