屋面初期雨水弃流装置的设计及试验  

Design and experiment of split-flow device for roof initial rainwater

作　　者：黄勇强[1,2] 徐明力[1,2] 吴春笃[1,2] 吴涛[1,2] 

机构地区：[1]江苏大学城市水资源与水环境国家重点实验室 [2]江苏大学研究中心,江苏镇江212013

出　　处：《江苏大学学报（自然科学版）》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)

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.

关 键 词：弃流装置 初期雨水 弃流 组合式 去除率 

分 类 号：X522[环境科学与工程—环境工程]