volcanic rock /volcanic rock for water filter

volcanic rock, Size: 0mm - 300 mm, Colour:black, red, Feature:Not radiation,, not poisonous and not odor etc - details see: https://www.buildingsupplieshub.com/volcanic-rock-volcanic-rock-for-water-filter-10037280
Type: Other Natural StonePlace of Origin: Hebei China (Mainland)Brand Name: Jiaqi Mineral 
volcanic rock /volcanic rock for water filter
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Average Parameters of Physical Performance Test for Volcanic filter

PerformanceUnitTest ResultPerformanceUnitTest Result
Bulk densityKg/m3740BETm2/g13.6-25.5
Specific density1:1.29Compressive strengthMpa5.78
Moisture%0.9-1.0Shear strengthMpa3.98
Porosity%73-82Friction loss rate%<1
Organic matter removal%Above 80Start time for hanging filmHour27
COD removal%Above 85Hydrochloric acid soluble rate%<1.0
BOD removal%75-93Stripping material

Containing beneficial micro-minerals and trace elements

Ammonia, nitrogen removal%Above 85Appearance

Full particles, similar to the globular

Main Chemical Composition of Volcanic filter media


Chemical composition		SiO2CaOMgOFe2O3Al2O3
Content %43.279.861.4911.8614.71

Packaging Detail:15kg/woven plastic bag
Delivery Detail:within two weeks after confirm the order

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