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如何减少管网漏损.降低产销差率是供水企业日常管理中面临的重要课题。分析了杭州市余杭区原有供水管网计量管理模式的弊端,结合其近年来的分区计量管理经验,阐述了在城乡居民一体化的背景下如何进行分区计量管理,从而有效地控制管网漏损,提高供水企业的经济效益。 相似文献
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供水管网漏损是供水企业普遍存在的严重问题,漏损控制的好坏体现了产、供、销全过程管理水平和资源使用效率。为了体现"节水优先"的治水方针,节水应从供水企业开始,有效降低供水环节的水资源损失。本文从DMA的建设与管理的角度出发,先介绍了DMA的概念及DMA管理对供水企业控制漏损起到的积极作用,再结合具体案例,深入探讨了基于DMA区域的最小夜间流量法,可用于确定管网真实漏失水平,为管网改造和管线检漏提供科学依据,以便优先选择漏损控制工作的重点区域;通过控制DMA区域供水压力,降低管网漏失;在DMA区域建设与基础管理中,逐步实现对供水管网的科学有效管理,提高供水管网漏失控制的工作效率;最终提出供水企业需要认识到DMA管理技术在管网管理和控制漏损方面的积极作用和重要意义,认真做好管网改造和管网规划设计工作,积极开展DMA区域建设,努力提高供水管网科学管理水平。 相似文献
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如何有效控制供水管网漏损以及准确、客观评定供水管网漏损率是供水行业面临的共同问题。《城镇供水管网漏损控制及评定标准》(CJJ92-2016)提供了供水管网漏损控制措施及其评定方法。郑州水司在供水管网漏损控制工作中始终坚持以技术指导为基础,以精细化管理为常态的管理模式,依据《城镇供水管网漏损控制及评定标准》,通过水量平衡分析技术,深入细化、量化影响漏损率的关键因素,并采取漏失水量管理、计量分区管理、表具计量管理等一系列管控措施,有效降低漏损率,确保既定目标的实现。本文重点介绍了郑州水司在开展漏损控制过程中的管理思路。 相似文献
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从多角度比较了国内外供水管网漏损控制策略、方法和考核指标的不同,重点介绍了国内供水企业管网管理与国际水协漏损控制策略存在的认知上或操作上的差距,并总结出适于国情的技术方法与流程,希望藉此推进国际水协漏损控制策略在国内的应用,更有效地提升供水服务水平。 相似文献
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《Urban Water Journal》2013,10(5):348-360
Water losses in pipe networks are usually the biggest ‘water use’ due to the high leakage occurring. The need for conservative water use is today more pressing than ever due to the stressful climate change conditions, forcing water utilities to consider applying effective Non Revenue Water reduction strategies. The assessment of a network's current operating status based on the IWA water balance (WB) is a good start. Although IWA suggests the WB to be annually assessed, this is not ideal for networks experiencing seasonal demand peaks, like in Kos town, capital of Kos Island in Greece. The WB for Kos town network was assessed on a bimonthly basis, following the water billing period used by the local water utility. The results revealed that higher real loss rates occur during the lower water demand periods due to the higher operating pressures. The annual WB can not reveal water loss peak timing. 相似文献
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《Urban Water Journal》2013,10(8):812-826
ABSTRACTThis study provides an overview of the 21st century research trends for water leakage control strategies that focus on pressure management, active leakage control, pipe rehabilitation, asset management and District Metered Area (DMA) design. The biggest contribution comes from the research team in Italy, whilst the most active researcher is based in Greece. Research in this field has gained momentum from 2008 although a couple of studies have been conducted since 2000. Control strategies are receiving attention not only from academia but also from industrial players who are looking for technological advances by collaborating with academic institutions in research and development. The main strategy to reduce water leakage is the pressure management of water distribution systems using optimal settings of a pressure reducing valve installation. Despite available technologies, the commitment from the government, the water operators and the local consumers are the most important criterion for the effective implementation of water-leakage control strategies. 相似文献
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供水管网检漏技术研究进展 总被引:2,自引:1,他引:1
简要阐述了国内外供水管网检漏技术的发展现状,介绍了供水管网检漏仪器的发展过程,分析了国内外各种供水管网漏失检测方法及其优缺点,并对管网漏损控制理论进行了研究,从而提高管道供水管理水平,减少经济损失. 相似文献
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《Urban Water Journal》2013,10(6):365-384
Nowadays, the implementation of pressure management in District Metered Areas (DMAs) is considered one of the most effective tools for leakage control, particularly in large networks and in systems with deteriorated infrastructures and with high pressure. The goal of the methodology proposed in this paper is to identify the optimal entry points at DMAs, determine the network needs in terms of reinforcement/replacement, and fix both the location and settings of different types of Pressure Reduction Valves (PRVs) for leakage control. This methodology is based on an optimisation model, which is solved by a Simulated Annealing algorithm, and the solutions obtained always fulfil the minimum pressure requirements for the network. The objective function comprises the total cost of the DMAs implementation and the economic benefits that can be achieved by pressure management. Finally, the results for two case studies are presented and discussed. 相似文献
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供水管网分区计量在降低供水产销差中的应用 总被引:1,自引:0,他引:1
从供水管网流量和压力分区计量的方法、目的、原则和意义及其发展趋势等几个方面,介绍了分区计量在降低供水产销差中的应用,提出供水管网分区计量是提高供水安全性、改善供水水质和控制漏损率的有效手段。同时,分区计量的实施也反映出一个供水企业的技术装备状态和管理水平。 相似文献
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在灌溉水的损失中,渗漏损失远大于蒸发损失。本文在实际工程中运用施工手段,在减少了灌溉渠道渗漏损失的同时,研讨了渠道改道的施工方法。渗漏损失随着渠道形状、渗透系数、地下水位等的不同而变化。为了防止渗漏损失,对渠道进行衬砌是有效的。 相似文献
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通过对市政给水管网漏耗控制方面的分析,探讨了管网漏耗的原因,并结合工作实际,提出了管网在管理和运营方面的解决方法,有效控制了管网漏耗量,达到了降低成本,提高供水企业生产效益的目的。 相似文献
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以余姚市供水管网漏损为例,通过对管网漏损形成原因的分析,从建立免费用水水量统计、加强管网管理、加强计量管理等方面,提出了相应的对策及措施,以确保供水管网漏损率大幅度降低。 相似文献