The Influence of Rainwater Reuse on Urban Water Circulation and Downstream Eco-environment

摘要

Based on theoretical analysis and comparison, it is sure that urban rainwater collection and reuse have no negative effect on urban water circulation and downstream eco-environment. It is shown from the results that rainwater collection and reuse would not reduce volume of rainwater infiltration. It also could control runoff pollution and reduce the flood peak of downstream river in flood season. Thus, rainwater harvesting was an effective approach to improve the eco-environment of downstream river. It could be concluded that the technique could be applied to different areas to improve local conditions.