基于能值分析的城市雨水收集系统效益评价  

Benefit evaluation on rainwater harvesting system based on emergy analysis

作　　者：赵宇轩 于竞宇[2] 刘佩贵[2] 王宗圣 ZHAO Yuxuan;YU Jingyu;LIU Peigui;WANG Zongsheng(Technology Logistics Management Office,Xuancheng Campus of Hefei University,Xuancheng 242000,China;School of Civil and Hydraulic Engineering,Hefei University of Technology,Hefei 230009,Anhui,China)

机构地区：[1]合肥工业大学宣城校区后勤管理综合办公室,安徽宣城242000 [2]合肥工业大学土木与水利工程学院,安徽合肥230009

出　　处：《环境工程》2025年第1期125-134,共10页Environmental Engineering

基　　金：国家自然科学基金项目(72274052)。

摘　　要：为了改善城市内涝和水生态、水污染等问题,我国开始城市雨水收集系统的建设。为充分发挥雨水收集系统效果,建立了一种基于能值分析的雨水收集系统全寿命周期综合效益评价方法,来评价雨水收集系统的综合效益。应用能值法将雨水收集系统的物质流、能量流和货币流的输入和输出转换为太阳能值,以典型区为案例,分别计算出建设期、运行期和拆除期3个阶段各类基本能值指标,选取生态、经济和社会方面的能值评价指标计算其结果,解析系统的效益产出情况并进行评价。结果表明:案例中能值输入为2.45E+18sej,输出为5.61E+18sej,输出大于输入能值,系统的有效性较强;系统在经济、社会和生态环境方面均具有良好的产出效益,生态环境效益占92.90%,尤其在生物多样性保护、年径流污染去除和补充水源方面;系统在运行使用阶段能值/环境可持续指标ESI为0.8256,展现了综合可持续发展能力。该研究提出的能值分析方法可用于不同区域雨水收集系统的评价,为城市雨水收集利用体系的评价提供了参考。In order to improve urban waterlogging,rain flood damage,and scarce water resources,China pays more and more attention to collecting and utilizing rainwater,and actively promotes the concept of"sponge city",For giving full play to the effect of rainwater harvesting systems and measuring their value,this study aimed to establish the evaluation model of the comprehensive benefits of rainwater harvesting systems by adopting emergy analysis method.The method quantifies the input and output of material flow,energy flow and monetary flow into solar energy value through emergy conversion technology.Taking a typical office building as a comprehensive case study,this paper calculated the basic value indexes of the three stages of the total collection life cycle,including construction phase,operation phase and scrap and demolition phase.This paper selected the emergy evaluation indexes of ecological environment,economy and society to calculate the results.Thus,the results of emergy evaluation indexes were calculated by the formula,the benefit output of the system was analyzed,and the results were evaluated.The results showed that the emergy input of the rainwater harvesting system was 2.45E+18sej.Remarkably,the emergy output reached an impressive level of 5.61E+18sej,which was much larger than the input energy.This striking disparity fully demonstrated that the output emergy far exceeded the input emergy,underscoring the system's remarkable effectiveness and efficiency.The system has demonstrated significant output benefits across multiple dimensions,including economic performance,social benefits,and ecological environmental protection.Among them,the ecological environment benefits accounted for 92.90%,especially in biodiversity protection,annual runoff pollution removal and water supply.During the operation phase,the emergy/environment sustainability index(ESI)of the system was O.8256,showing the system's sustainable development ability.A high ESI value indicated that the system pursued economic benefits while fully consi

关 键 词：能值分析 雨水收集系统 效益评价 雨水利用 

分 类 号：TU991.114[建筑科学—市政工程]