干旱区生态环境知识资源中心(Arid): 雨水斗截污装置对屋面初期雨水净化规律及关键参数设计

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	雨水斗截污装置对屋面初期雨水净化规律及关键参数设计
其他题名	Purifying rule and key parameters design of the interception device of rainwater funnel treating initial roof rainwater runoff
	陈望; 陈莹; 赵剑强; 张宇浩
来源期刊	环境工程学报
ISSN	1673-9108
出版年	2020
卷号	14 期号:7 页码:1799-1807
中文摘要	在西安市某文教区屋面排水立管设径流采样点,雨期采用人工时间间隔采样法采集径流水样,对2016年8月2016年11月3场屋面径流SS、COD、TN 、NH_3-N、TP、浊度、Pb、Zn、Cu、Cd、Ni、Cr等污染指标进行监测,界定了初期雨水的概念并根据屋面初期雨水水质、水量特征、雨水斗构造设计屋面雨水截污装置,研究了该截污装置的透水性能、工作状态、截污效果和清洗更换周期。结果表明:将暴雨次降雨前30~40 min、大雨和小雨次降雨前40~50 min雨水定义为初期雨水;土工布单位面积质量越大,透水能力越小,且其过滤通量与过滤水头呈线性关系;在不发生溢流的情况下,500 g·m~(-2)的土工布制成的截污装置过滤出水可满足《生活杂用水水质标准》(GB/T 18920-2002)要求;为避免5年一遇的暴雨下屋面积水,截污装置上部溢流孔孔口面积至少应为0.015 4 m~2,须至少保证有效过滤区高度为568 mm。研究为缓解西安等干旱、半干旱地区用水紧张问题提供参考。
英文摘要	A runoff sample point was set up in a roof drainage pipe which located in the cultural and educational area of Xi'an city, Shaanxi province. Runoff samples in 3 storm events from Aug. 2016 to Nov. 2016 were collected by the manual time-interval sampling method, and the pollution indictors of SS, COD, TN, NH_3-N, TP, turbidity,Pb, Zn, Cu, Cd, Ni and Cr of all runoff samples were determined by standard methods. Based on the monitoring results, the initial roof runoff was defined, then a device for intercepting the pollutants in the roof runoff was designed according to the water quality and flow characteristics of initial roof runoff and the structure of rainwater funnel. The experiments were conducted to study the permeability of the interception device, work status, the interception efficiency of pollutants and clean and replacement cycle of the interception device. The results indicated that the initial rainwater runoff could be defined as the first 30~40 minutes of a rainstorm event and the first 40~50 minutes of a heavy rain event or a light rain event. The more the geotextile mass of unit area was, the less the permeability was. Moreover, there was a linear relationship between filtration flux and water head. Under the conditions without overflow, the filtration effluent of the interception device prepared with the geotextile of 500 g·m~(-2) treating the initial roof runoff could satisfy the requirement of Quality Standard of Reclaimed Water (GB/T 18920-2002). In order to avoid water accumulation from roof flooding in the case of 5 years-return period storm, the minimum area of the upper overflow orifices and the minimum height of the filtration area of the interception device were 0.015 4 m~2 and 568 mm, respectively. The study can provide references for release the water shortage of Xi'an city and other arid or semi-arid areas.
中文关键词	屋面径流 ; 初期雨水 ; 雨水斗 ; 截污装置 ; 土工布 ; 低影响开发策略(LID)
英文关键词	roof runoff initial rainwater rainwater funnel interception device geotextile low impact development (LID)
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Environmental Sciences & Ecology
CSCD记录号	CSCD:6762623
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353615
作者单位	陈望, 长安大学环境科学与工程学院, 旱区地下水与生态效应教育部重点实验室, 西安, 陕西 710054, 中国.; 陈莹, 长安大学环境科学与工程学院, 旱区地下水与生态效应教育部重点实验室, 西安, 陕西 710054, 中国.; 赵剑强, 长安大学环境科学与工程学院, 旱区地下水与生态效应教育部重点实验室, 西安, 陕西 710054, 中国.; 张宇浩, 长安大学环境科学与工程学院, 旱区地下水与生态效应教育部重点实验室, 西安, 陕西 710054, 中国.
推荐引用方式 GB/T 7714	陈望,陈莹,赵剑强,等. 雨水斗截污装置对屋面初期雨水净化规律及关键参数设计[J],2020,14(7):1799-1807.
APA	陈望,陈莹,赵剑强,&张宇浩.(2020).雨水斗截污装置对屋面初期雨水净化规律及关键参数设计.环境工程学报,14(7),1799-1807.
MLA	陈望,et al."雨水斗截污装置对屋面初期雨水净化规律及关键参数设计".环境工程学报 14.7(2020):1799-1807.