界定再生水的概念内涵,研究自来水和再生水的供给与需求,使用系统动力学方法建立水资源的供需流图以模拟现实的水循环以及再生水回用对水循环的影响。再生水回用使得水资源的使用方式由原来的“资源-产品-污染排放”的水资源单向流动方式,变成了“资源-产品-再生资源”的水资源循环流动的新模式。 Define the connotation of reclaimed water, study the supply and demand of tap water and reclaimed water, and use system dynamics to establish the supply and demand flow chart of water resources to simulate the impact of the actual water cycle and reclaimed water reuse on the water cycle. The reuse of reclaimed water makes the use of water resources a new way of circulating water resources from “resources product pollution discharge ” to a new circulation of water resources "resources - products - renewable resources mode.