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Specifications
1.Free samples are available.2.Good quality with different granular size.
3.Competitive price.
Volcanic rock for sale
The surface is rough and has many micro holes, these characteristics are suitable for the micro biological animals to grow and breed, which can be shaped in to a film. Owing to the volcanic filter, the volcanic filter pond could not only treat the civil contaminated water, but also biological industrial waste water, living drainage water and lightly contaminated water.
In the water treatment, it can also replace quartz sand, activated carbon, anthracite and so on which can be used as filter medium. Meantime, it can do the deep treatment for the behind water which has been treated on second level by the waste water treating factory. If the treated water exceeds to the reused water’s standard, then it can be reused as middle water.
Product Description
Volcanic rock filter media, Filter media in water treatment
Volcanic rock filter media advantage:
Volcanic rock makes and excellent biological and mechanical filter media
High pores
Ideal for biofall, barrel and similar pond filters
Ideal for wet/dry and canister aquarium filter
Chemical Composition
| SiO2 | CaO | MgO | Fe2O3 | Al2O3 |
Content % | 43.27 | 9.86 | 1.49 | 11.86 | 14.71 |
Average Parameters of Physical Performance Test for Volcanic filter
Performance | Unit | Test Result | Performance | Unit | Test Result |
Bulk density | Kg/m3 | 740 | BET | m2/g | 13.6-25.5 |
Specific density | 1:1.29 | Compressive strength | Mpa | 5.78 | |
Moisture | % | 0.9-1.0 | Shear strength | Mpa | 3.98 |
Porosity | % | 73-82 | Friction loss rate | % | <1 |
Organic matter removal | % | Above 80 | Start time for hanging film | Hour | 27 |
COD removal | % | Above 85 | Hydrochloric acid soluble rate | % | <1.0 |
BOD removal | % | 75-93 | Stripping material | Containing beneficial micro-minerals and trace elements | |
Ammonia, nitrogen removal | % | Above 85 | Appearance | Full particles, similar to the globular | |
