Pumice Filter Media
Amorphous Aluminum Silicate (Pumice) is naturally calcined volcanic glass foam consisting of highly vesicular strands permeated with tiny air bubbles.
Pumice Filtration Media is used in the treatment of potable water treatments, seawater reverse osmosis (SWRO) desalination and wastewater treatments due to its relatively low density, high particulate removal and its minimal flow resistance; it can be used in mono and multi-media filters and in both pressure and rapid gravity filter designs.
Pumice is washed, dried, and sieved to standard grain sizes that meet or exceed international standards such as EN12906 – 2012.
Physical Properties
Chemical Properties
Applications
| Specific Gravity | : | 2.32 – 2.40 | |
| Bulk Density (Loose) | : | 433 – 465 | kg/m³ |
| Hardness | : | 5 – 6 | Moh |
| Acid Solubility | : | ≤ 2 | % |
| Colour | : | Greyesh | |
| Attrition Loss | : | ≤ 1 | % |
| Silicon Oxide | : | > 70 | % |
| Aluminium Oxide | : | 10- 20 | % |
| Ferric Oxide | : | < 2 | % |
| Calcium Oxide | : | 0.8 | % |
| Potassium Oxide | : | < 5 | % |
| Sodium Oxide | : | < 5 | % |
| Loss on ignition | : | 4– 6 | % |
| Acid solubility* | : | < 1 | % |
- Desalination pre-treatment filtration systems
- Surface water filtration
- Well water filtration systems
- Wastewater tertiary filtration
- Industrial filtration systems
- Swimming pools filters
Standard Grain Size (range)
| 1. | 1.0 – 2.0 | mm |
| 2. | 1.2 – 2.4 | mm |
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