... has the purification, the dechlorinate, to deodorize and so on functions, the husk filters material adsorbability. The husk filters the ... washes the regeneration, counter-flushing intensity low (6.7L/Sm2), rate of percolation quick (24-26m/h), does not harden, is ... compression is good, adsorption truncation dirty ability strong and so on merits, before may use directly filters, the counter-flushing, ...