
water treatment use natural volcanic stone
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Basic Info
Place of Origin: | Hebei, China (Mainland) |
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Product Description
Product Description
water treatment use natural volcanic stone main specification:5-50mm or as per client’s request characteristics of natural lava stone used as water treatment filtering material: Physical property: A.non-pointed appearance, small flow resistance, non-blocking B.rough surface, fast biofilm formation, microbial film is uneasy to fall off while flushing Repeatedly C.natural lava stone is porous and is the best growing environment of zoogloea. D.high mechanical strength 5.08Mpa, longer service time than other filtering material E.moderate density, saving energy and reducing cost Chemical property: A.good biological chemical stability, anti-corrosion, sluggishness B.the surface with positive charge, strong hydrophilicity C.no affection on the activity of microorganism Hydraulics characteristics A.the average porosity is about 40% inside and outside and the water resistance is small. B.lava stone has large specific surface area and high aperture ratio. It is inert. So it is helpful for microorganism to contact, hang membrane and grow. C.non-pointed appearance, small water resistance, energy efficiency Technical data:
SKYPE:sjz.xinhui QQ:3118231308 application of natural lava stone:
item | standard | item | standard |
Volume weight | 850kg/M3 | Specific surface area | 13.6-25.5M2/g |
Specific gravity | 1.4 | Compressive strength | 5.78Mpa |
Water content | 0.9-1.0% | Shear strength | 3.98Mpa |
poriness | 73-82% | Friction loss rate | 1% max. |
Organic substance removal | 80% min. | Hanging membrane time | 27hours |
Removal rate of COD | 85% min. | Solubility in hydrochloric acid | 1.0% max. |
Removal rate of BOD | 75-93% | Dissovled matter | Slight rate of beneficial minerals and trace components |
Removal rate of ammonia & nitrogen | 85% min. | appearance | Similar ball |
