| 摘要 |
To treat sea water by distillation using an evaporator (18) or by reverse osmosis, in addition to a mechanical prepurification and addition of chlorine, a treatment can be provided upstream in which, by using chemicals at least some of which can be recovered, deposits of calcium sulphate and calcium carbonate are avoided and magnesium is separated off with the aid of ion exchanger resins. The ion exchanger treatment according to the invention includes three steps (4, 10, 16), the first, novel per se, being equipped in particular with a magnesium-charged, weakly acidic, highly alkaline earth metal-selective ion exchanger (4). <IMAGE> |
