The high efficiency hanging membrane light filter material shows rough surface and many micropores in physical and microscopic structure. These characteristics are especially suitable for microorganism to grow and propagate on its surface and form biofilm. Volcano rock media in biological aerated filter not only can handle the municipal sewage and organic industrial wastewater, biodegradability of micro polluted water, also can replace quartz sand in water treatment, activated carbon, anthracite used as filter medium, and may also have been factory level two treatment process after tail water sewage treatment, the effluent water reuse standards for water reuse.
Chemical features editor
Volcanic biological filter material in the chemical micro structure showed: 1, microbial chemical stability: volcanic rock biological filter material corrosion resistance, inert, in the environment not to participate in biological membrane biochemical reaction. 2, surface electricity and hydrophilic: volcanic biological filter material surface with positive charge, is conducive to microbial growth, strong hydrophilic, attached biofilm quantity and speed. 3, the impact on biological membrane activity: as a biological membrane carrier, volcanic biological filter material on the fixed microorganisms harmless and no inhibitory effect, practice has proved that does not affect the activity of microorganisms.
Item | Unit | Test Result |
Volume | Kg/m3 | 850 |
Proportion |
| 1.4 |
Specific Surface Area | m2/g | 13.6-25.5 |
Compression Strength | Mpa | 5.78 |
Shear Strength | Mpa | 3.98 |
Moisture Content | % | 0.9-1.0 |
Porosity | % | 73-82 |
Wear Loss Rate | % | <1 |
Organics Removing Rate | % | ≥80 |
COD Removing Rate | % | ≥85 |
BOD Removing Rate | % | 75-93 |
Ammonia/nitrogen Removing Rate | % | ≥85 |
Biofilm CulturingTime | Hour | After 27 hours |
Hydrochloric Acid Soluble Rate | % | <1.0 |
Dissolve out Substance | Mineral contenting little beneficial element |