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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 in a certain university in Japan as an example, this paper introduces a rainwater utilization system for flushing the roof rainwater collected, stored, filtered and disinfected. The analysis and analysis of the quality of the treated rainwater showed that the quality of the effluent treated by the system can meet the sanitary standards of flushing water. A comparison of rainfall and rainwater use within a year in the area was conducted to analyze the effects of rainwater use efficiency. Through simulation tests, the factors influencing the availability of rainwater (including rainfall, water consumption, tap water supply, rainwater storage tank capacity, etc.) were determined.