屋面雨水作为冲厕用水的案例分析

Case Analysis of Using Roof Rainwater as Toilet Flushing Water

以日本某高校教学楼为例,介绍了屋面雨水经收集、贮存、过滤、消毒处理后用于冲厕的雨水利用系统。对处理后雨水水质的测定分析结果表明,该系统处理出水水质能够达到冲厕用水卫生标准。比较该地区一年内降雨量和雨水利用量,分析讨论了雨水利用有效率的影响。通过模拟试验,确定了影响雨水有效性利用的因素(包括降雨量、使用水量、自来水补给水量、雨水贮存池容量等)。

Taking a teaching building of an university in Japan as a case study, a rainwater utilization system using the roof rainwater as flushing water after being collected, stored, filtrated and disinfected is introduced. The quality of treated rainwater is analyzed. The result shows that the treated rainwater quality can achieve the water quality index of flushing water. Compared with the rainfall and the quantity of rainwater utilization in one year, the influence factors of the rainwater utilization efficiency are discussed. Through the simulation test, the influence factors are determined, including the rainfall, the rainwater consumption, the make-up quantity of tap water, the volume of rainwater storage pond and so on.