Water Filtration Media

Water Filtration Media

Sand filtration is a frequently used technology for water purification. The filter media typically comprises a multiple layer of sands having a range of grain sizes. When water flows through the filter, the suspended solids are removed and clean water flows out. The flow-direction may be reversed in order to regenerate the filter bed, so called backwashing.

Silica sands and gravels for water filtration

Minerals Marketing offer a range of Silica Sands and Gravels for use in water filtration applications. Standard grades include:

• 40mm
• 20mm
• 10mm
• 6mm
• 2.0-3.35mm (5/8)
• 1.0-2.0mm (8/16)
• 0.7-1.2mm (14/25)
• 0.5-1.0mm (16/30)

Silica sand and gravel provides a cost effective, grain size controlled, filter bed media.

Glass media for water filtration

Alternatively, one of the most rapidly growing areas is the use of Glass Media for water filtration, whereby the benefits of using glass for water filtration include the following:

• Tests show that glass media removes finer particles from water than the equivalent grade of silica sand.
• Having lower density than sand, glass media requires 15% less material to fill the equivalent filter vessel.
• The angular to sub-angular particle shape of glass media typically provides improvement in turbidity removal over sub-rounded silica sands.
• With superior permeability due to particle packing, back washes take less time, saving energy, chemical treatment and water usage costs.
• Glass media is less prone to fouling due to a smoother surface, whereby bacteria cannot get trapped in any cracks or crevasses, which in turn results in lower process costs.

Available grades:

• Grade 1 (0.5-1.0mm)
• Grade 2 (1.0-2.0mm)
• Grade 3 (3.0-6.0mm)

Minerals Marketing supply a range of glass media and silica sand media to suite your application requirements. Material data sheets are available on request.