The physical effect of volcanic rock filter: 

 1, appearance: no sharp grains, on the flow resistance, easy to plug, gas distribution uniformity of water distribution; surface roughness, biofilm speed, anti-microbial film easy to fall off when washing. 

 2, the porosity: porous volcanic rock is a natural cellular is the floc is the best growing environment. 

 3, the mechanical strength: by the national quality inspection departments to 5.08Mpa, proven to stand the role of different hydraulic shear strength, life is much longer other media. 

 4, density: moderate density, anti-floating and not easy to run when washing materials can be energy saving. 

 Volcanic rock (pumice stone or porous basalt commonly known) is a functional eco-friendly materials, after the volcanic eruption is volcanic glass, minerals and precious bubble formation of the porous shaped stone, volcanic rock containing sodium, magnesium, aluminum, silicon, calcium, , titanium, manganese, iron, nickel, cobalt and molybdenum and other dozens of minerals and trace elements, without a far-infrared radiation wave, after a volcanic eruption in the ruthless, after a lapse of ten thousand years, mankind has gradually found it The valuable point. My company has expanded its applications to the construction, water conservancy, grinding, filter, charcoal barbecue, garden landscaping, soilless cultivation, ornamental products, and other fields, in all walks of life play an irreplaceable role. 

 Volcanic rocks are mainly used for water treatment industry, is the quality of the water filter; rough porous surface, easy to hang biofilm.