浅析兰州市校园雨水的利用研究

Analysis on Rainwater Reuse in Lanzhou Campus

收集利用雨水已成为一种既经济又实用的水资源开发方式。通过实验监测分析兰州市某校园雨水的水质情况,结果表明:(1)校园区雨水径流的主要污染物质为化学需氧量(COD)和悬浮性固体(SS);(2)屋面汇集雨水水质较好,路面雨水受污染较重。并对该校园可回收利用雨水径流量进行理论计算;提出回收利用校园雨水的方案,如收集屋面雨水用于校园的绿化,采用绿化带改良及屋面绿化等方法利用雨水资源,以达到较好的节水目的,提高水资源的利用效率。

Rainwater collection and reuse has already become an economical and practical measure of water resources utiliza- tion. The rainwater quality of Lanzhou campus was analyzed, the results showed that ： （ I ） The main pollutants of campus rainwater runoff were Chemical Oxygen Demand （COD） and Suspended Solids （SS） ; （ 2 ） The quality of roof collection rainwater was better than pavement rainwater collection. Recycling rainwater runoff was theoretically calculated ; and rainwater recycling programs were proposed on campus, such as roof rainwater collected for campus greening, the improved green belt and roof greening are applied, in order to achieve better water reservation goals and improve the utilization efficiency of water resources.