Volcanic rock media

Volcanic rock mediaThe 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 DescriptionVolcanic rock filter media, Filter media in water treatmentVolcanic 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 filterAverage Parameters of Physical Performance Test for Volcanic filterPerformanceUnitTest ResultPerformanceUnitTest ResultBulk densityKg/m3740BETm2/g13.6-25.5Specific density1:1.29Compressive strengthMpa5.78Moisture%0.9-1.0Shear strengthMpa3.98Porosity%73-82Friction loss rate%<1Organic matter removal%Above 80Start time for hanging filmHour27COD removal%Above 85Hydrochloric acid soluble rate%<1.0BOD removal%75-93Stripping materialContaining beneficial micro-minerals and trace elementsAmmonia, nitrogen removal%Above 85AppearanceFull particles, similar to the globularMain Chemical Composition of Volcanic filter media Chemical compositionSiO2CaOMgOFe2O3Al2O3Content %43.279.861.4911.8614.71