Provide lava stone,v
| Type of posting | Request |
| Category | Other Chemicals |
| City / Port | Beijing, CN, China |
| Description | The volcanic biological filter is corrosion resisted, it is inertia, so it never reacts with biological films. 2¡¢Surface¡¯s electric property and hydrophilcity: Volcanic filter¡¯s surface brings positive charge, so it is favorable for the growt h of the microorganisms. Its hydrophilcity is very strong, so the attached biological film quantity is large and very fast. 3¡¢The effectives to the biological film activity: as a biological film carrier, the volcanic biological filter is harmless , no suppressive to the fixed microorganisms, the fact proves that it never affects the microorganism¡¯s activity. poriness£ºthe inside and outside average poriness is about 40%, the resistance to water is very small, comparing with the same kind filter, it costs less, but can reach the expected filtering purpose. 2¡¢The specific surface area: the specific surface area is large, the opening holes are many and inertia, so it is suitable for microorganism to touch and form film, keeping |
| Date | 2010 Apr 28, 20:04 |