随着国民经济的发展,城市对水的需求量日益增加,大多数城市附近可开采的水资源有限或受到污染,而不得不从距市区较远的水源地取水,从而带来大水量、远距离输水工程。水源远移已成趋势,管道投资数额在整个投资中所占的比重日益增大,能源消耗在制水成本中也占举足轻重地位,因此,选择投资省、效益高、基建费用和运行费用 With the development of the national economy, the urban demand for water is increasing day by day. Due to the limited or contaminated water resources available in most cities, water has to be withdrawn from water sources far away from urban areas, resulting in large amounts of water. Long-distance water transfer project. Water has become a distant migration trend, the amount of pipeline investment in the entire investment increasing proportion of the energy consumption in the cost of water also plays a decisive role, therefore, the choice of investment, high efficiency, infrastructure costs and operating costs