淡化技术中最早采用的方法是蒸馏法,又称蒸发法。其过程的特点是:盐水(在此为海水、咸水、或其他水溶液的总称)沸腾逸出蒸汽,蒸汽受冷凝为淡水,而原水中的不挥发物浓缩直至最后排放。蒸发法与膜法或冷冻法不同,一经蒸发所得的水就是“蒸馏水”,一般水质都较高,含盐量(总固溶物)可降到10—20毫克/升以下。另一方面,蒸馏法所能处理的原料水比其他方法广泛。原水含盐量从几百毫克/升到 Desalination technology is the earliest method of distillation, also known as evaporation. The process is characterized by the brine (here saltwater, brackish water, or other aqueous solution) that boils out of the steam, the steam is condensed to freshwater, and the nonvolatile content of the raw water is concentrated until it is finally discharged. Evaporation method and membrane or freezing method is different, once the evaporation of the resulting water is “distilled water”, the general high water quality, salt content (total dissolved solids) can be reduced to 10-20 mg / L or less. On the other hand, the raw water that the distillation method can handle is wider than other methods. Raw water salinity from a few hundred mg / liter to