| Title |
A Study on the Optimum Size of Rainwater Utilization in Detached Residential Complex |
| Authors |
백종석 ( Baek Jongseok ) ; 김형산 ( Kim Hyungsan ) ; 신현석 ( Shin Hyunsuk ) ; 김재문 ( Kim Jaemoon ) ; 박경재 ( Park Kyungjae ) |
| DOI |
https://doi.org/10.15681/KSWE.2018.34.6.669 |
| Keywords |
Detached residential complex; EPA SWMM; Rain barrel; Rainwater reuse; Storage |
| Abstract |
Torrential rain and drought are repeated due to the increase in the unpredictable fluctuating of rainfall patterns. It is time for stabilize water resource management in terms of disaster prevention. Distributed control from sources is needed to minimize damages caused by torrential rains and droughts. Rain barrel can be used to reduce the runoff as they collect and store rainwater. In response to this situation, Seoul Metropolitan Government and other local governments implemented a project to support the installation of rain barrel and provided 90% of the cost of installing it in private areas. However, with limited budget, it is difficult to distribute rainwater to the city which is mostly covered by private areas. In this study, Samho-dong, Ulsan, where pilot projects of water cycle leading city are underway, analyzed the effects of reducing the runoff with respect to the amount of rainwater that can be used, and analyzed the economics of recoverable investment cost when installed. From the analysis, it was established that it is possible to show sufficient efficiency with a small capacity without the need to install large rain barrel effectively in the private sector, and to support the installation cost of less than 70 percent of the rainwater can be recovered. |