University of Southern Queensland, Queensland, Australia.
Water Sci Technol. 2012;66(3):612-9. doi: 10.2166/wst.2012.214.
Harvesting stormwater from urban catchments provides a supplementary water resource and, due to the physical abstraction of polluted water, also leads to environmental benefits. These benefits include the reduction of frequent ecosystem disturbance during small storms and less waterway erosion; hydrological impacts which are currently addressed by Water Sensitive Urban Design guidelines for stormwater frequent flow management (FFM). Although FFM and stormwater harvesting share the same store-release behaviour, they have a very different underlying basis to their design and operation. This paper explores the level of compatibility between these two systems and hence the potential for their integration. It was found by water balance analysis that the harvesting storage required to maximise most yields is similar to the recommended storage volume for FFM. This analysis was performed for a temperate-climate location in South East Queensland under historically low rainfalls. Environmental benefits associated with runoff quantity and pollutant load reductions are highest when the capture storage is rapidly emptied after storms.
从城市集水区中采集雨水可提供补充水资源，并且由于对受污染水的物理截留，还带来环境效益。这些效益包括减少小暴雨期间对生态系统的频繁干扰和减少对水道的侵蚀；水敏性城市设计指南目前针对雨水频繁流动管理（FFM）来解决水文影响问题。尽管 FFM 和雨水采集具有相同的存储-释放行为，但它们在设计和运行方面有着非常不同的基础。本文探讨了这两个系统之间的兼容性程度，以及它们集成的潜力。通过水量平衡分析发现，要使产量最大化所需的采集存储量与 FFM 推荐的存储体积相似。该分析是在昆士兰州东南部的温带气候条件下，根据历史最低降雨量进行的。在暴风雨后迅速排空集水存储时，与径流量和污染物负荷减少相关的环境效益最高。
