Bode H, Weyand M
Ruhrverband, Essen, Germany.
Water Sci Technol. 2002;45(3):167-74.
The installation of about 500 stormwater detention facilities (SDFs) led to a significant drop of the pollution originating from stormwater runoff in the river basin of the Ruhr which covers 4,488 km2. The German technical directives on the design of SDFs are briefly outlined and the specific costs for such plants are given. The average costs for one kilogram COD held back by SDFs in combined systems amount to Euro 3.73 (calculated without consideration of the subsequent removal in the municipal wastewater treatment plant (WWTP)). The tank volume for stormwater storage can be minimised by application of real-time management systems which allow a dynamic operation of all SDFs in a catchment area.
约500个雨水滞留设施（SDFs）的安装，使鲁尔河流域（面积4488平方公里）因雨水径流产生的污染显著下降。文中简要概述了德国关于SDFs设计的技术指令，并给出了此类设施的具体成本。在联合系统中，SDFs截留一千克化学需氧量（COD）的平均成本为3.73欧元（未考虑随后在城市污水处理厂（WWTP）中的去除情况）。通过应用实时管理系统，可以将雨水储存的水箱容积降至最低，该系统可使集水区内所有SDFs实现动态运行。
