Purificn. of water to pyrogenic standard - by passage in sequence through softener, reverse osmosis unit, ceramic filter and demineraliser

摘要

The installation comprises a softener, a reverse osmosis unit and a demineraliser. The following plant items are now piped together in series in the order of flow: (a) the softener, (b) the reverse osmosis unit, (c) a ceramic filter and (d) the demineraliser. - Pref. the ceramic filter forms the membrane for the permeator of the reverse osmosis unit. An ultrafiltration unit can be installed downstream of the demineraliser. A fraction of the purified water from the delivery end of the installation can be recycled to the inlet of the demineraliser.