渗滤沟处理屋顶散排径流的试验研究  

Study on Roof Stormwater Runoff Treatment Using Percolation Trench System

作　　者：曾远[1] 李森[1] 叶海[1] 

机构地区：[1]环境保护部南京环境科学研究所,江苏南京210042

出　　处：《中国给水排水》2014年第13期119-122,共4页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2009ZX07102-003)

摘　　要：昆明市新运粮河流域屋顶散排雨水直接排河,造成了一定程度的河道污染和洪峰压力,针对此,采用渗滤沟工艺处理屋顶散排雨水,研究其对污染物的去除效果以及对径流洪峰的调蓄作用。结果表明：当表面负荷为4 m3/（m2·d）时,渗滤沟系统对屋顶散排雨水中COD、NH3-N、TN、TP的平均去除率分别为17.3%、28.8%、24.1%、47.8%,具有一定的除污效果;同时其对服务面积为15倍自身面积内的降雨径流量削减率在38.3%左右,并可将降雨洪峰延时15~30 min,在一定程度上代替了排水管道。In the New Yunliang River basin of Kunming, roof stormwater runoff was directly dis- charged into the river, which resulted in a certain degree of river pollution and the flood peak pressure. Therefore, percolation trench system was used to remove the pollutants and regulate the flood peak. The results showed that when surface load was 4 m3/（ m2·d） , the average removal rates of COD, NH3 -N, TN and TP from distributed discharged roof stormwater by the percolation trench system were 17.3% , 28.8% , 24.1% and 47.8% respectively. Meanwhile, runoff from its service area which was 15 times of its own area was reduced by about 38.3% , and flood peak was delayed by 15 to 30 rain. To some ex- tent, the percolation trench system replaced the drain pipe.

关 键 词：屋顶散排雨水 渗滤沟 除污效果 径流调蓄 

分 类 号：X703[环境科学与工程—环境工程] TU992[建筑科学—市政工程]