专利号:01251173.0“地下水越抽越深,水源地越来越远,远距离取水的城市越来越多,用水成本越来越高。”这是我国目前水资源短缺的真实写照。我国人均占有水资源量仅为2400立方米,相当于世界人均量的1/4,居世界第109位,被列为全世界13个人均水资源匮乏的国家之一。全国660多个城市中有400多个缺水,110多个城市严重缺水,全国城市日缺水量达1600万立方米,已影响 Patent number: 01251173.0 “More and more groundwater pumping deeper and deeper water sources, more and more cities to take water from far away, the cost of water is getting higher and higher.” This is a true portrait of China’s current water shortage. China’s per capita share of water resources is only 2400 cubic meters, equivalent to 1/4 of the world average per capita, ranking the 109th in the world, being listed as one of the 13 countries in the world where water resources are scarce. More than 400 of the 660 cities across the country are in shortage of water, with severe water shortages in more than 110 cities and water scarcity of 16 million cubic meters per day in cities nationwide, affecting