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E. LINDLEY CChem FRSC MIM MIEnvSci S. E. DAVIES BSc CBiol MIBiol MIEnvSci 《Water and Environment Journal》1995,9(5):470-476
Before privatization of the water authorities in England and Wales in 1989, future water companies were instructed to provide auditable proof of their investment requirements by the production of asset management plans.
With respect to distribution systems for potable water, asset management plan studies have established that unlined ferrous mains are often the main cause of complaints about discoloured water. It has also been found that the investment in water mains rehabilitation, which is driven by water quality problems, overshadows similar investment requirements driven by high burst rates and poor hydraulic performance.
This paper describes how certain techniques of water quality modelling have been developed and refined to provide a rapid, cost-effective method for identifying requirements for water-main rehabilitation. 相似文献
With respect to distribution systems for potable water, asset management plan studies have established that unlined ferrous mains are often the main cause of complaints about discoloured water. It has also been found that the investment in water mains rehabilitation, which is driven by water quality problems, overshadows similar investment requirements driven by high burst rates and poor hydraulic performance.
This paper describes how certain techniques of water quality modelling have been developed and refined to provide a rapid, cost-effective method for identifying requirements for water-main rehabilitation. 相似文献
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介绍了鹰潭市农村自来水供水现状和存在问题,并提出了合理规划,以保障城乡供水安全、改善农村生产和生活条件、促进城乡统筹发展和社会和谐。同时,为打破城乡界限实现水资源的统一管理和配置提供决策依据。 相似文献
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城市供水应急体系建设探讨 总被引:1,自引:0,他引:1
城市供水管理应急体系是社会保障体系中保障城市居民生活、工业和第三产业用水安全的重要组成部分。本文从供水应急体系建设进行论述,为城市供水应急体系的建设提供一定的参考。 相似文献
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建设部于2005年2月颁布了《城市供水水质标准》,该标准对城市供水水质提出了更加严格的要求。对新标准的主要特点和供水企业面临的主要问题进行了分析,立足于企业现有的工艺条件和设备配置,对供水企业通过加强工艺管理、水质管理、管网建设与维护以及创新二次供水管理模式等途径实施新标准进行了探讨。 相似文献
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Asset management plans were prepared in 1989 and 1994 by water companies in England and Wales for submission to the Office of Water Services. These plans constituted the financial programming required by water companies to meet specified standards of service, particularly with respect to water quality. Detailed studies have previously established that problems associated with iron from unlined ferrous mains, particularly in soft water areas, is often the main cost 'driver'for water distribution investment. However, many of the so-called unlined iron mains were treated with a coal-tar pitch lining for corrosion protection before installation, and residues of this painted lining can give rise to unsatisfactory levels of polycyclic aromatic hydrocarbons in drinking water.
The paper describes how desk-study research, followed by the development and application of a modified 'focused downstream series sampling'water-quality modelling technique allowed polycyclic aromatic hydrocarbons to be accounted for in two water company asset management plan submissions. The paper also raises a number of fundamental implications with respect to the occurrence of these carcinogenic compounds in drinking water. 相似文献
The paper describes how desk-study research, followed by the development and application of a modified 'focused downstream series sampling'water-quality modelling technique allowed polycyclic aromatic hydrocarbons to be accounted for in two water company asset management plan submissions. The paper also raises a number of fundamental implications with respect to the occurrence of these carcinogenic compounds in drinking water. 相似文献
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Yang Qi 《Fire Technology》2002,38(1):71-79
This paper puts forward the significance of study for the reliability of fire water supply system in high-rise buildings, as an exploration for the reliability of fire water supply system to attract the attention from experts on this issue. It briefly introduces the reliability model and calculation of the system, and analyses functional application process and probability features of the system. It raises the principles of reliability design and the method of improving reliability to benefit the optimization of fire water supply system design. Moreover, the development of reliability study has been looked ahead in the paper. 相似文献
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本文介绍了南京市供水行业的发展现状,对供水行业存在的问题及挑战进行了阐述,并对南京市供水行业发展提出了相关建议。 相似文献
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城市给排水系统是城市正常运转的保障。本文针对我国给排水管网现状提出优化给排水管理系统的措施,并且借助现代科学技术对管理系统进行开发,提高城市运行管理水平。 相似文献
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现代信息技术的不断普及使我国水利工作有了新的亮点,全面应用信息技术于供水工程建设是现代水利工程发展的必然趋势。长期的实践证明,以水利信息化带动水利现代化,以水利现代化促进水利信息化,是新世纪水利发展的必由之路。 相似文献
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现代信息技术的不断普及使我国水利工作有了新的亮点,全面应用信息技术于供水工程建设是现代水利工程发展的必然趋势。长期的实践证明,以水利信息化带动水利现代化,以水利现代化促进水利信息化,是新世纪水利发展的必由之路。 相似文献
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介绍了上海金茂大厦给水系统的构成和实际运行情况,总结了超高层建筑给水设施运行管理和部分设备改造的经验. 相似文献
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中共中央提出了“建设资源节约型、环境友好型社会”的号召。本文通过城市水资源循环利用和给排水规划意义及现状、水循环利用及给排水规划的体会,提出了一些水资源循环利用的理念和措施,希望可以用于城市建设发展。 相似文献
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以南方某市为例,介绍了其供水管网水质在线监测管理系统的建立过程。首先,对系统进行总体设计,确定在线监测点的位置、数量和在线监测指标,选定在线监测仪器和在线数据传输方式。其次,基于管网水质在线监测信息建立了水质在线监测管理系统,可实现数据库连接、列表、查询、统计报表打印、实时监测数据显示等功能。最后,依据统计分析与人工智能的方法建立了三种水质预测模型,并将其与水质在线管理系统集成,实现了对供水管网主要水质指标的在线监测、管理与预测。对该系统采用管网实测数据进行考核、验证,结果令人满意。 相似文献
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连云港职业技术学院新校区规模较大,生活、消防给水工程具有系统复杂、配置高、设置范围广、设置点分散等特点.文章介绍了新校区生活、消防给水系统的设计特点,重点对新校区高低压分医生活给水系统、消防贮水水质保证及消防外管网合一等方面的设计进行了优化探讨. 相似文献