雨水回收利用生态工程及其应用——以中国科学院研究生院怀柔新校区为例

为了节约北京市的水资源,减少雨水中所携带的污染物排放对环境造成的污染,结合中国科学院研究生院怀柔新校区即将建设的实际工程,对怀柔区的自然环境特征进行了调查,并根据现有校园规划设计方案,对园区内水量平衡进行计算,在最大化收集雨水和剩余中水的基础上,得出为保持园区内水量平衡,每月所需补充或外排的水量。同时,基于水量平衡表所得出的园区内水量较为丰富的结果,采用了自然回收净化、部分间接利用的雨水回收利用生态工程,并提出雨水回收利用流程的方案:针对校园内不同汇水面上的雨水质量不同的特点,分别对它们设计了不同的回收方法,使之最终汇入园区内的景观水系。景观水体中的水通过景观水处理装置进行循环处理,保证水的质量。灌溉绿化及清洗道路可直接抽取景观水使用。应用雨水回收生态工程取得了很好的生态效益与社会效益,既节约了水资源,又可以补充地下水源,防洪减排,还能减少雨水所携带的污染物对环境的破坏。

Ecological engineering design of rainfall resource utilization and its application: a case study in Huairou Campus of Graduate School of Chinese Academy of Sciences

To save the water resource in Beijing and reduce the environmental pollution of urban rainfall, the water balance was calculated and the method that recycling the rainfall naturally and reusing it indirectly were advocated, based on the planning in Huairou Campus of Graduate University School of Chinese Academy of Sciences. Then, the flow chart for recycling and reusing rainfall was figured out. And different approaches to collecting rainfall were designed, according to rainfall qualities in different landscape, so as to treat the polluted rainfall uniformly. Ecological Engineering of recycling and reusing the rainfall benefits for saving water resource and supplying groundwater.It can also prevent flood and reduce environmental pollution.