| 摘要 |
The invention relates to a device for desalting water, especially seawater, by reverse osmosis, comprising means for guiding saltwater into a pressure device and a membrane module for separating saltwater which is conducted from the pressure device into desalted water and saltwater concentrate. In order to prevent or reduce damage, especially corrosion, caused by high-pressure saltwater or saltwater concentrate, the surfaces of the device entering into contact with the saltwater or saltwater concentrate have at least one partial coating, the structure of the surface thereof consisting of elevations and recesses, the distance between the elevations ranging from 0.5 - 250 mu m and the height of the elevations ranging from 0,5 -250 mu m. Preferably, the elevations are composed of hydrophobic polymers or lasting hydrophobic materials which cannot be dissolved by water.
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