一、海水淡化的发展趋势水是人类赖以生存的基础,是工农业生产的命脉。可是自然界淡水源决不是取之不尽,用之不竭的。随着现代化工农业生产的发展,城市人口的增多,淡水需求量的急剧增加,加上人为因素对天然水体的污染,造成淡水数量相对减少。因此,目前在世界范围内,人类正面临着缺水的威协。正如1977年3月在布宜诺斯艾利斯召开的联合国首次水资源会议所指出的那样 First, the development trend of desalination Water is the basis for human survival, is the lifeblood of industrial and agricultural production. But fresh water in nature is by no means inexhaustible. With the development of modern chemical industry and agriculture, the increase of urban population and the sharp increase of freshwater demand, coupled with the pollution of natural water bodies caused by human factors, the quantity of fresh water is relatively reduced. Therefore, at present, mankind is facing a threat of water shortage. As the United Nations First Water Conference held in Buenos Aires in March 1977 pointed out