| 摘要 |
<p>The present invention relates to a method for cleaning water comprising membrane distillation (1), abbreviated as "MD", in a membrane distillation arrangement (1), which distillation (1) is caused to use differences in partial pressure with the aid of a hydrophobic membrane through which membrane only clean water (2) in a gaseous state is caused to pass, whereby a water residual (4) with an elevated content of contaminants does not pass through the membrane, and where the water residual (4) is caused to be transferred to a boiler arrangement (3). The invention is characterised in that steam (8) that is formed during the boiling procedure (3) is caused to be led to a heat exchanger (6) in which the steam (8) is heat exchanged heat with a colder flow of cooling medium such that the steam (8) is caused to condense, and in that condensed steam (7) that is released during the condensation process in the heat exchanger (6) is caused to be added to the water (10) that is to be cleaned in the membrane distillation arrangement (1).</p> |
