Volcanic rock

Free samples are available. Good quanlity with different granular size. Competitive price.

Volcanic rock media

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

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

Main Chemical Composition of Volcanic filter media

Chemical composition	SiO2	CaO	MgO	Fe2O3	Al2O3
Content %	43.27	9.86	1.49	11.86	14.71

 

Volcanic rock