初期径流弃流设施 First flush devices

初期径流弃流设施First flush devices

图1设施应用例子Figure 1Application example[1]

来源source：/Global/GWP-C Files/First Flush.jpg,2013-07-20.

图2初期弃流装置的示意图Figure 2Schematic diagram of a first flush device[2] 来源source：/Global/GWP-C Files/First Flush.jpg,2013-07-20.

设计实例Design example

☐该项目于2012年5月建成，针对当地的建筑设计初期弃流装置用于雨水收集系统In May 2012 an Arkitrek Camp team made a first-flush diverter for a rainwater harvesting system on their design for the Mantanani Bunkhouse. Here’s how it works.

☐该建筑顶部面积约为45 m²，这意味着1mm的雨水将产生约45公升的水供人们收集。

装置容积为35公升，能够接收初期1mm的降雨。这个数字背后没有科学研究，它只是大概的。屋顶是传统的棕榈茅草屋，屋檐是镀锌波纹钢便于收集雨水排到排水沟里。

This building has a roof area of approximately 45m² which means that 1mm of rain will yield approximately 45 liters of water for collection. The first flush diverter with a volume of 35 liters is designed to divert the first 1mm of each rainfall. There’s no science or research behind this figure, it just feels ‘about right’. The roof is traditional nipah palm thatch with a strip of galvanized corrugated steel at the eaves to collect water neatly into a gutter.

图4沙巴设计案例

Figure4Design example for Mantanani Bunkhouse [4]

来源source：/http://first-flush-diverter/，2013

优先流法弃流Preferential flow removal device

图5优先流法弃流装置示意图

Figure 5Schematic diagram of l arge roof runoff removal device[5] 来源source：改绘自Prof. Dr.-Ing. W.F. Geiger ,Dr.-Ing. C. Wilhelm, Sustainable Water Management in Urban Areas – Rainwater harvesting [M],2002.

应用的区域功能和设计

落水管过滤器

Downpipe filter

图6落水管弃流装置示意图Figure 6Schematic diagram of downpipe device

[6]

来源source ：

/sites/default/files/articles/ajax/docs/6_HP125_pg38_Kinkade-3.jpg

自动控制弃流装置Automatic control filter

图7落水管弃流装置示意图Figure 7Schematic diagram of downpipe device[7] 来源source：改绘自葛敬，雨水安全弃流分流控制装置

https:///viewer?url=/

直插式过滤器(小面积)Inline filters(small areas)

图8直插式过滤装置示意图Figure 8Schematic diagram of inline filters device[8]

来源source：Prof. Dr.-Ing. W.F. Geiger ,Dr.-Ing. C. Wilhelm, Sustainable Water Management in Urban Areas – Rainwater harvesting [M],2002.

图9国内直插式过滤装置Figure 9Inline filters devicein China[9]

来源source：

/water-housings-and-connections/1074-w4-push-fit-in-line-fi lter-strainer.html

图10国外直插式过滤装置Figure10Inline filters devicein China[10]

来源source：/c-a-p-custom-automated-products-inline-water-filter-p5065/

旋流分离式弃流设备Spiral separator

图11旋流分离装置示意图Figure 11Schematic diagram of spiral separator [11] 来源source：改绘自/showproducts.asp?id=23

翻板式初期径流分离器Initial rainwater split-flow instrument

图12翻板式初期径流装置示意图

Figure 12Schematic diagram of initial rainwater split-flow instrument [12] 来源source：杨潇，张建丰，翻版式初雨分离器的设计[J].2010.