Ionenaustauschverfahren und Ionenaustauschmaterial zur Verwendung bei diesen Verfahren

摘要

1,231,601. Ion exchange. COMMONWEALTH SCIENTIFIC & INDUSTRIAL RESEARCH ORGANIZATION and UNION CARBIDE AUSTRALIA Ltd. 19 April, 1968 [20 April, 1967], No. 18551/68. Heading B1J. [Also in Divisions Cl and C3] An ion-exchange process for the treatment of liquid comprises forming an agitated suspension in the liquid to be treated of an ionexchange adsorbent having ferromagnetic properties, the adsorbent being in a magnetised state; causing or allowing particles of the adsorbent to flocculate magnetically by virtue of their magnetised state; and removing the thus flocculated particles from the liquid. In a particular embodiment, the liquid to be treated is fed upwardly through a mixing zone and the ion-exchange adsorbent is fed downwardly through the same mixing, zone to effect the treatment of the liquid. A plurality of mixing and settling zones can be used if desired. The adsorbent is suitably a bead condensation or addition polymer containing polar groups (e.g. amino or sulphonic acid groups) and having incorporated therein a ferromagnetic material such as barium ferrite, gamma iron oxide or magnetite. Particular forms of apparatus for carrying out the ion-exchange process are described.