The use of our Pumice Filtration Media in water filtration applications is increasing worldwide. Pumice Filtration Media is used as an alternative to sand and anthracite in the treatment of potable water treatments, seawater reverse osmosis (SWRO), desalination and waste water treatments. Pumice filtration media is increasingly being specified for contracts involving pre-treatment prior to reverse osmosis (RO) and desalination, in both new and refurbished plants particularly in the Middle East. This is due to its extremely high particulate removal, low density and its versatility; it can be used in mono and multi-media filters in both pressure and rapid gravity filter designs.
All our pumice filtration media has British Standard approval (BS EN 12906-1999) – Products used for treatment of water intended for human consumption’, European Standard approval (EN 12901/ 12902:1999) and UK Drinking Water Inspectorate approval. Additionally our pumice filtration media meets all the chemical and physical testing requirements for AWWA B-100 and DIN EN 12906.
We are currently in the process of seeking full SWCC (Saline Water Conversion Corporation) approval to further expand our Middle East Division.
Technical Data Sheet
1. Product Name / Reference
Pumice Filtration Media
2. Main Intended Use
Water filtration media in pre-treatment prior to desalination, desalinisation, reverse osmosis (RO) and seawater reverse osmosis (SWRO).
3. Chemical Description
This media contains no free silica
| Compound Element | Chemical Formula | Typical Content |
| Silicon Dioxide | SiO2 | 74.55% |
| Aluminium Oxide | Al203 | 12.45% |
| Potassium Oxide | K2O | 4.50% |
| Sodium Oxide | Na2O | 4.00% |
| Ferric Oxide | Fe2O | <2.00% |
| Calcium Oxide | CaO | <2.00% |
| Magnesium Oxide | MgO | <2.00% |
| Titanium Dioxide | TiO2 | <2.00% |
| Sulphur Trioxide | SO3 | 0.20% |
| Manganese Oxide | MnO | 0.10% |
| Carbon Dioxide | CO2 | 0.10% |
| Ferrous Oxide | FeO | 0.06% |
| Phosphorous Pentoxide | P2O5 | 0.005% |
| Combined Water | H2O+ | 4.35% |
Determined by FAAS
4. Physical Properties
| a. Bulk Density | 410 – 440 kg/m3 |
| b. Melting Point | 1200 oC |
| c. pH Value | 7.0 – 8.0 |
| d. Specific Gravity | 2.40 g/cm3 |
| e. Hardness | 5.5 Mohs |
5. Sizes Available
| Grade | Size |
| Pumice Filtration Media No.3 | 0.2 – 0.5 mm |
| Pumice Filtration Media No.5 | 0.8 – 1.3 mm |
| Pumice Filtration Media No.6 | 1.2 – 2.4 mm |
| Pumice Filtration Media No.8 | 2.0 – 3.5 mm |
6. Packaging
Packed in 1.2 cubic metre UV resistant IBC big bags.
Further Information and Technical Support
For further information and case studies please contact us at: info@techfil.co.uk