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Specifications
volcanic rocks1.Free samples are available.
2.Good quality with different granular size.
3.Competitive price.
volcanic rocks
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Product Description:
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
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Chemical Composition:
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| SiO2 | CaO | MgO | Fe2O3 | Al2O3 |
Content % | 43.27 | 9.86 | 1.49 | 11.86 | 14.71 |
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Average Parameters of Physical Performance Test for Volcanic filter:
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? ? ? 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 | |
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Usage:
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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.
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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.
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In the water treatment, it can also replace quartz sand, activated carbon, anthracite and so on which can be used as filter medium.
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Meantime, it can do the deep treatment for the behind water which has been treated on second level by the waste water treating factory.
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If the treated water exceeds to the reused water’s standard, then it can be reused as middle water.
