Rainwater utilisation in Germany: efficiency,dimensioning, hydraulic and environmental aspects |
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| Affiliation: | 1. Ingenieurbüro für technische Hydrologie und Bodenschutz, Hermann-Löns-Strasse 9, D-30952 Ronnenberg-Benthe, Germany;2. Bangemannweg 2, 30459 Hannover, Germany;1. Faculty of Environment and Labour Safety, Ton Duc Thang University, 19 Nguyen Huu Tho Street, Tan Phong Ward, District 7, Ho Chi Minh City, Vietnam;2. Department of Civil & Environment Engineering #35-518, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul, 151-742, Republic of Korea;1. Jinyun Forest Ecosystem Research Station, School of Soil and Water Conservation, Beijing Forestry University, 35 Qinghua East Road, Beijing, 100083, China;2. Department of Civil Engineering, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4L8, Canada;1. Department of Agricultural Engineering, Faculty of Civil, Agricultural and Mining Engineering, University of Engineering and Technology, Peshawar 25120, Pakistan;2. Center of Excellence in Water Resources Engineering, University of Engineering and Technology, Lahore 54890, Pakistan;3. Department of Civil and Environmental Engineering, Hanyang University, Ansan 15588, South Korea;1. Division of Environmental Engineering, Faculty of Chemistry and Environment, Thuyloi University, 175 Tay Son, Dong Da, Hanoi, Viet Nam;2. Sustainable Management of Natural Resources and Environment Research Group, Faculty of Environment and Labour Safety, Ton Duc Thang University, 19 Nguyen Huu Tho Street, Tan Phong Ward, District 7, Ho Chi Minh City, Viet Nam;3. Department of Civil & Environment Engineering, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea;4. Institute of Engineering Research, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea |
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| Abstract: | In this study, the development and performance of rainwater utilisation systems in Germany are described. Initially the operational characteristics of the different types of rainwater utilisation systems are explained. The objective of the modelling-based investigations is to quantify the effects of rainwater usage systems on the urban drainage system. On the basis of a long-term simulation of 10 years rain data, the following parameters were calculated: tank volumes, covering efficiency, drinking water savings, overflow occurrence, overflow volumes, overflow reduction, recurrence time of overflows. The water balance of a one-family house and a multi-storey building in Bochum was calculated in a case study. |
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