Analysis and Evaluation of the Urban Rainwater Harvesting System in Green Buildings

In the present study, urbanization provides residents with superior material and cultural living conditions, but also brings series of problems such as environmental pollution and water supply and drainage issues. Urban rainwater utilization is one of the method to solve urban water shortage and reduce waterlogging disaster.Taking an office building in Wuhan as an example, based on the analysis of rainfall characteristics in Wuhan, this thesis demonstrates a rainwater utilization system by rational use of the structural form of buildings, and analyzes and evaluates the function of the system with actual data. It is feasible and necessary to prove its comprehensive benefit according to the input and revenue. And the system is economic and reasonable for the project and the society as a whole. Based on the specific project, the author summarizes experiences and put forward effective suggestions.