杭州国际金融会展中心雨水回用系统

Rainwater reuse system of Hangzhou International Finance Convention and Exhibition Center

杭州国际金融会展中心,设两套独立雨水回用系统,分别回用于绿化浇灌、道路冲洗和便器冲洗。据相关文献提出的2种用水模式下的a、b、R关系曲线图,对两套系统分别进行水量平衡计算,确定系统储水池容积,估算对应自来水替代率分别为98%和85%。其中,绿化雨水回用系统采用先进的雨水收集方式,雨水经1.5 m厚优质级配绿化土层形成的反滤层自然过滤,收集后的雨水水质较好,简单处理便可回用于绿化浇灌、道路冲洗。此外,雨水收集池巧妙利用8个环形汽车坡道空腔,满足雨水储存的同时,避免占用商业面积3 560 m~2。

This project is Hangzhou International Finance Convention and Exhibition Centert,with two independent rainwater reuse systems,which are respectively used for greening irrigation,road flushing and toilet flushing.According to the relationship curves of a,b,and R under the two water consumption modes proposed in the relevant literature,the water balance calculation is carried out for the two systems respectively,the volume of the system storage tank is determined,and the corresponding tap water replacement rate is estimated to be 98%and 85%respectively.Among them,the green rainwater recycling system adopts advanced rainwater collection method.The rainwater is naturally filtered by the backfiltration layer formed by 1.5 m thick high-quality graded soil layer,and the collected rainwater has better water quality.Simple treatment can be directly reused for green sprinkling and road flushing.In addition,the rainwater collection tank cleverly uses eight circular car ramps to meet the needs of rainwater storage while avoiding the occupation of 3560 m~2 of commercial area.