城市雨水集蓄利用工程规模的优化

Optimization of the Scale of Urban Rainwater Accumulation and Utilization Project

通过分析雨水贮存池容积、多年平均日降雨量、满蓄次数等关系,依据贮存池的工作过程和费用效益分析原理提出了雨水贮存池经济规模优化求解方法,进而对优化设计中常见的关键问题进行了讨论,如贮存池满蓄次数、可收集水量、投资与成本、综合效益、资金时间价值等。该方法具有一定的通用性和实用性,可以作为城市雨水利用工程优化设计的理论依据和实用技术。最后对北京地区某工程实例进行了应用分析。

By making analysis on the relationship among the volume of rainwater storage basin, average daily rainfall over years, and frequency of full storage, the optimized solution to the scale of rainwater storage basin was proposed on the principle of cost-effectiveness analysis and according to the working status of storage basin, and then discussion was carried out on the key problems in optimized design, such as frequency of full storage, available water volume, investment and cost, comprehensive benefits, and time value of funds, etc.. This method is universal and practical, and can be used as the theory basis and practical technology in optimization design of urban rainwater utilization project. Finally, the application of case project in Beijing was investigated.