1960年代,西班牙政府发现了一个正在出现的问题。位于北非海岸多礁而日光充足的加那利群岛(Canary Islands)正在吸引越来越多的游客。然而,虽然有充足的房屋空间可以提供给这些游客,但是饮用水的供应却得不到增加以满足需求。不过,西班牙把挑战变成了机遇。政府投资了一种全新技术的研发,这一技术使用膜把盐水中的盐过滤出去。就这样,西班牙的公司最终研发出这些技术:在水处理 In the 1960s, the Spanish government discovered an emerging problem. The Canary Islands, rich in sunlight and rich in reefs on the North African coast, are attracting more and more tourists. However, although there is sufficient space available for these tourists, the supply of drinking water is not increased to meet the demand. However, Spain has turned the challenge into an opportunity. The government has invested in the development of a completely new technology that uses membranes to filter salt out of salt water. In this way, Spanish companies eventually developed these technologies: in water treatment