The Research Of Collection And Utilization Of Rainwater Of Architecture And Residence Community

As the natural water resources, rainwater has the advantages of easily been collected, simply been treated, it has been paied more and more attention in many countries. Recently, internationally rainwater utilization in urban gradually turn to the direction of storage permeability, slowly emissions, recycling, etc. Also, in China, many foreign advanced technologies and management experiences constantly are learned, exploring the localization of utilization mode contacting regional features.After processed, rainwater can be used as miscellaneous in urban areas, this can improve the utilization efficiency of water resources, alleviate the situation of shortage of water. Meanwhile, it can reduce the rainstorm runoff and pollutants in the runoff to water system, alleviate flood peak. Building roof in urban area occupies considerable proportion, there is also considerable rainfall from building roof and better than rainwater collecting from the road or parking lot. So the processing cost and risks of using rainwater from building roof are lower, it becomes the focus of attention of recycling rainwater. Many kinds of effective measures have been taken to improve the utilization ability and efficiency of using rainwater from the roof. In recent years, there are more and more researches and project implementations of using rainwater resources, but still existing problems, such as concepts backward, utilizing or control mode is single, management system lag behind, etc.The problem of utilizing rainwater in architecture is being mainly studies. In the foundation of studying the domestic and foreign advanced theories and experiences in rainwater utilization, the system parameters are analyzed and discussed in the use system of roof rainwater. Initial abandon flow rain is analyzed in theory by ultimate strength method, and it is verified combined with examples based on Matlab. This has reference to determine the initial abandon flow and abandon flow volume in the actual project. The quantity of reuse rainwater is analyzed of the roofing rainwater; calculation method is proffered to calculate the volume of rain storage tank. And, simulation experiment is taken by using rainfall information of Chongqing base on Matlab. Finally the most economical storage tank capacity is obtained by conducting economic evaluation.The problem single utilization mode reflects the concepts backward, there is relatively rare studies on combination system of rainwater and recycled water, engineering application are few. Based on the analysis of their respective characteristics of application pattern, further studied is taken on the feasibility and mode of the combination system. The mode of recycled water as supplement water to rainwater system is proposed, and its economy is analyzed by using Matlab, comparing with independent rainwater and recycled water system, trying to construct the combination system mode for application in our countries.