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众所周知,我国水资源总体上属匮乏的国家,而且时空分布不均,水危机和供需不平衡的矛盾同时存在,给水资源的开发利用带来很大的困难。另一方面,城市中每天都有大量的污水未加处理利用而被排放;而城市供水管网中所提供的按饮用水标准生产的自来水中绝大部分又被作为低质非饮用水使用,造成极大的浪费。因此,根据使用者对水质的不同要求充分使用分质供水系统,开辟多种
As we all know, China’s water resources are generally scarcer countries, and their spatial and temporal distribution is uneven. The contradiction between the water crisis and the imbalance between supply and demand exists simultaneously, bringing great difficulties to the development and utilization of water resources. On the other hand, every day in the city, a large amount of sewage is discharged without being treated and used; most of the tap water supplied in the urban water supply network according to drinking water standards is again used as low quality non-potable water, Caused great waste. Therefore, according to the different requirements of users of water quality full use of water supply system, open up a variety of