Process for the purification of water

Claim 1

A process for the purification of water, containing at least one organic compound comprising carbon, hydrogen and at least one atom selected from oxygen and nitrogen, said organic compound having a solubility in water at 20° C. of more than 1 g/100 ml, which process comprises contacting said water as feed in a contact zone with a crystalline iron silicate having the following properties: (a) thermally stable up to a temperature above 600° C., (b) an X-ray powder diffraction pattern showing, inter alia, the reflections given in Table A of the specification, (c) in the dehydrated form the following overall composition, expressed in moles of the oxides: (1.0±0.3)(R).sub.2/n O.[a Fe.sub.2 O.sub.3.b Al.sub.2 O.sub.3.c Ga.sub.2 O.sub.3 ].y (d SiO.sub.2.e (GeO.sub.2), where R=one or more monovalent or bivalent cations, a>0.1; b>0, c>0, a+b+c=1; y>10, d>0.1, e>0, d+e=1; and n=the valency of R; and in which oxides of hydrogen, alkali metal and/or alkaline-earth metal, silicon and iron are present, and the Fe 2 O 3 /SiO 2 molar ratio is less than 0.1; and separating a water product having lower content of said at least one organic compound than said feed water.