Water Treatment · Media Filters
Silica Sand
Overview
Silica sand is a naturally occurring granular material composed predominantly of silicon dioxide (SiO₂) in the form of quartz — one of the most abundant minerals in Earth's crust, valued for its chemical purity, hardness, durability and thermal resistance. Processed to high purity for water-treatment applications from residential to industrial scale.
Applications
- Drinking water treatment — post-coagulation and sedimentation filtration
- Industrial process water — manufacturing, cooling towers, boilers
- Swimming pool filtration — commercial and residential sand filters
- Wastewater treatment — tertiary polishing before discharge or reuse
- Septic systems — final treatment before soil infiltration
- Membrane pre-filtration — upstream of RO or UF
Specifications
| Silicon dioxide (SiO₂) | 95–99.9% |
| Iron oxide (Fe₂O₃) | 0.085% |
| Aluminum oxide (Al₂O₃) | 0.3% |
| Specific gravity | 2.65 g/cm³ |
| Hardness | 7 Mohs |
| Effective size | 0.05–2.0 mm |
| Whiteness | 88–97% |
| Melting point | 1,710 °C |
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