摘要
针对暴雨径流及屋面初期雨水水质较差,不能满足雨水利用的要求,采用初期雨水弃流的水质控制技术,设计了一种组合式屋面初期雨水弃流装置.根据雨水污染物冲刷的规律和降雨的强度,确定了所需弃流池的容积;设计中,将截留在弃流装置中的雨水由底部透水部件直接渗入地下;装置结构主要采用再生树脂复合材料,底部透水土工布主要采用骨料和粘结剂的合成材料.试验结果表明:弃流量为3 mm时,该装置可以截留屋面初期雨水50%～70%的污染物,以SS、浊度、COD为主,最高的去除率分别达到74.95%,50.00%,60.90%;装置不需要进行雨后管理,只需进行定期维护.
To make storm runoff and initial rainwater with poor quality meet the requirement of reuse, a combined split-flow device of roof initial rainwater was designed based on water quality control technolo- gy. The split-flow cell volume was regulated according to rainwater pollutants scouring law and rainfall in- tensity. The intercepted rainwater was penetrated directly into ground through the bottom permeable com- ponents. The split-flow device was mainly composed of regenerated resin, while the bottom permeable components were made up of aggregate and binder synthetic material. The test results show that with ini- tial rainwater runoff discarding of 3 mm, 50% - 70% pollutants of SS, turbidity and COD can be inter- cepted with the highest removal efficiencies of 74.95% ,50.00%,60.90%, respectively. The designed device just need regular maintenance without any personnel management after rain.
出处
《江苏大学学报（自然科学版）》
EI
CAS
北大核心
2012年第2期219-222,共4页
Journal of Jiangsu University：Natural Science Edition
基金
国家"十一五"重大水专项基金资助项目(2008ZX07317-001)
关键词
弃流装置
初期雨水
弃流
组合式
去除率
split-flow device
initial rainwater
split-flow
combined
removal efficiency
