基于水龄熵的供水管网可靠性及水质保障机制OA
Reliability of Water Supply Network and Mechanism of Water Quality Guarantee Based on Water Age Entropy
[目的]本文以水龄熵为评价指标,构建供水管网可靠度评价模型,旨在通过评估管网可靠性,探究其与水质的关联关系,进而分析管网水质变化规律,为提升管网供水安全提供科学依据.[方法]本文构建了以水龄熵为核心的供水管网可靠度评价模型,通过分析不同工况下的管网拓扑结构,量化评估系统可靠度与水质参数包括水龄、余氯衰减速率等的变化特征.[结果]在同一试验管网中,针对不同的管网拓扑结构导致系统可靠度及水质变化,在13个工况中,工况2可靠度最高,可靠度为0.58,但其在稳定前的波动幅度较大;工况1系统可靠度与工况2相近,因两者拓扑结构接相近;工况5可靠度最低,可靠度为0.35,管网末端节点水龄熵增大.多路径节点可靠度较高,同时受流量分配及拓扑位置影响较大.在不同工况条件下,工况5水龄最高,系统中余氯衰减速率最高,随着系统路径数的增加,水量分配的不确定性增大.工况1和工况2系统余氯接近,而工况2系统余氯和出水点余氯水平高于工况5,在系统可靠度较高的情况下,余氯水平高于系统可靠度较低的工况.[结论]通过管网可靠性评估与水质变化分析,可揭示供水管网拓扑结构、系统可靠度与管网水质的内在关联,为优化供水管网设计及保障供水安全提供理论支撑.
[Objective]The purpose of this paper is to construct a reliability evaluation model of water supply network by using water age entropy as the evaluation index,aiming to explore the correlation between water supply network reliability and water quality by evaluating the reliability of pipe network,and then analyze the change law of water quality in pipe network,so as to provide a scientific basis for improving the water supply safety of pipe network.[Methods]In this paper,a reliability evaluation model of water supply network with water age entropy as the core was constructed,and the change characteristics of system reliability and water quality parameters(such as water age,residual chlorine decay rate,etc.)were quantitatively evaluated by analyzing the topology of the pipe network under different working conditions.[Results]In the same experimental pipe network,according to the changes in system reliability and water quality caused by different pipe network topologies,among the 13 working case schemes,the reliability of scheme 2 was the highest,with a reliability of 0.58,but its fluctuation range before stabilization was larger.The reliability of scheme 1 and scheme 2 were similar due to the similar network.The reliability of scheme 5 was the lowest,with a reliability of 0.35.The reliability of multi-paths nodes was relatively high,but it was also greatly affected by water amount allocation and topological position.The water age entropy of the end node of the pipe network increased.Under different working conditions,the water age of condition 5 was the highest,the residual chlorine decay rate in the system was the highest,and the uncertainty of water allocation increased with the increase of the number of paths in the system.The residual chlorine in scheme 1 and scheme 2 were close.The total chlorine levels of the system and the residual chlorine at the outlet point in case 2 were higher than those in case 5.[Conclusion]Through the reliability assessment of the pipe network and the analysis of water quality change,the internal relationship between topology,reliability and water quality can be revealed,which provides theoretical support for optimizing the design of the water supply network and ensuring the safety of water supply.
赵欣;王名豪;张飞;许丽芸;姜蕾;杨坤
上海城市水资源开发利用国家工程中心有限公司,上海 200082同济大学环境科学与工程学院,上海 200092上海城市水资源开发利用国家工程中心有限公司,上海 200082同济大学环境科学与工程学院,上海 200092上海城市水资源开发利用国家工程中心有限公司,上海 200082上海城市水资源开发利用国家工程中心有限公司,上海 200082
建筑与水利
水龄熵拓扑结构供水管网可靠度评价水质保障
water age entropytopological structurewater supply pipelines networkreliability evaluationwater quality guarantee
《净水技术》 2026 (1)
45-52,8
上海市"科技创新行动计划"启明星项目(22QB1401500)
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