| 摘要 |
<p>A method for cleaning water comprising membrane distillation, abbreviated as "MD", which distillation is caused to use differences in partial pressure with the aid of a hydrophobic membrane, through which only clean water (16) in a gaseous state is caused to pass, whereby a water residual (15), which contains an elevated content of contaminants, does not pass through the membrane. The invention is characterised in that the water is caused to flow in a first circuit (2) comprising a membrane distilla¬ tion arrangement (1), in that the water in the first circuit (2) is caused to pass a first heating arrangement (4), which is caused to heat the water in the first circuit (2), in that at least a portion of the first circuit (2) is extended in the vertical direction (VL), in that a closed additional second circuit (3) is connected to the vertical part of the first circuit (2) and in that the water in the additional second circuit (3) is caused to be heated to a temperature that is higher than that of the water in the first circuit (2).</p> |
