多水源管网供水压力调整对供水交界面水龄的影响

在城乡一体化供水发展进程中,新建水厂和原有水厂服务范围会存在供水交界区域,通常位于多个水厂的供水末端区域,管道流速慢、水龄大、水质相对较差。进行了HZ地区供水交界面水质保障研究,通过调整供水厂的压力调度,使得供水交界区域小幅移动,对供水交界面内的管网节点水龄进行了对比。结果表明,该措施能小幅降低供水交界面区域内的水龄,用水量大的用户水龄降低相对更为明显,水龄分布更加均匀,有利于保障供水交界面区域的水质安全。

Influence of Water Supply Pressure Adjustment on Water Age at Water Supply Area Boundaries in a Multi-source Water Supply Network

In the integration of urban-rural water supply systems,there are water supply area boundaries between the new and existing water treatment plants.A boundary area is the water supply end area of multiple water treatment plants,which has slow water velocity,long water age,and low water quality.Water quality guarantee of the water supply area boundaries in HZ area was studied,the discharge pressure of a newly built large water treatment plant was adjusted to slightly shift the water supply area boundaries,to provide comparison of water age at nodes in the water supply area boundaries.The results showed reduction in water age in the water supply area boundaries.Particularly,large users showed larger water age reduction.The distribution of water age was uniform,which was helpful to protect the water quality safety in the water supply area boundaries.