... chemical properties are stable, the adsorption truncation dirt strong (adsorption rate is 27-50%), the anti-oil bath, Yi Fan ... washes the regeneration, counter-flushing intensity low (6.7L/Sm2), rate of percolation quick (24-26m/h), does not harden, ... Sand Technical SpecificationITEM NO.UNITDATA1. Oil removal rate%90-952.Seston removal rate%95-983. Filtration ratem/h20-254. Specific Gravityg/cm31.505 ...