INTRODUCTION.
The filtration into high pressure filters is an application
that allows to deal with high water’s
volumes using
relatively limitated filtering surfaces, if compared with
gravity filters that require
surfaces of contact really
wide.
The zinc tanks, in this last years, are obtaining a great
success for the treatement of flood waters
that require
the application of high quantity of minerals and high
volume backwash flows.
The problem of the high pressure filters, has always
been, to optimize at the most the time of
contact of
the filtered water with the filtering surface and to have
at disposition a drainage system
that is able to restore
with a backwash the initial conditions of the filtering
product.
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