厦门大学嘉庚学院的雨水资源化潜力分析

Rainwater resources utilization in Xiamen University Tan Kah Kee College

以厦门大学嘉庚学院为集雨实验区进行雨水资源化潜力分析。利用谷歌地球卫星软件及实地测量的方式获得相应的集雨区面积,并依据可利用雨水资源量的公式,计算得到嘉庚学院每年可收集的雨水总量可达74万m3,同时每年用于校区的道路喷洒、冲厕、绿地浇灌和楼层清洁的水量为73.9万m3,回收的雨水量基本可以满足以上所需。投入约占节约自来水费用的10%左右,经济效益显著;同时可减缓暴雨对校园的冲击。指出实现雨水回收,我国目前尚存在相关政策、法律法规较缺乏和人们的认识不足等问题,对此进行了分析并提出建议。

The potential utilization of the rainwater resources at Xiamen University Tan Kah Kee College , which was selected as an experimental plot for rainwater collection , was analyzed .The area of rainwater collection was obtained with the Google Earth software and field observation , and the collected amount of rainwater in the study area was calculated to be 740 000 m^3 per year, using the formula of available amount of rainwater resources . Meanwhile , the amount of water needed for road spraying , flushing , green land irrigation , and floor cleaning was up to 739 000 m^3 per year.Thus, the recycled rainwater can basically meet these needs .The investment accounted for about 10%of the saved tap water expenditure , which indicates a significant economic benefit .In addition , the rainwater recycling can diminish the impact of rainstorm on the campus .However , rainwater recycling in China lacks relevant policies , laws and regulations , and public unawareness .These problems are discussed in this paper .