ˇˇˇˇIt
is a kind of pressure filter, mainly
applied for the pretreatment of the
reverse osmoseˇ˘electrodialysis and
system of ion exchange water-softening
and desalination,also used for coarse
filter of the low required industrial
water supply. It is a tranditional
method of decontaminating water by
using the loaded stock to capture
the suspended substance and colloid.
