高层建筑给水设计探讨

通过分析高层建筑的特点，提出了高层建筑给水设计中应注意的问题，具体介绍了系统的分区及设计原则，并对系统的分类及工况、优缺点进行了探讨，以使给水设计既经济合理，又安全可靠。     

唐河倒虹吸管身段施工中的关键技术

介绍唐河倒虹吸管身混凝土施工过程中的模板技术、钢筋连接新技术、止水带安装、施工缝留置及混凝土浇筑方法。     

A review of catchment management in the new context of drinking water safety plans

By managing a catchment effectively, the range and amount of contaminants entering waters used for public water supply can be reduced, with resultant benefits for both water companies and consumers. Consequently, catchment management is increasingly being recognised as being at the heart of the water environment. An overview of current and previous catchment management initiatives is given, along with the European Landscape Convention, which could be used as a vehicle for the implementation of a national catchment management strategy. The adoption of the drinking water safety plan approach is strongly advocated by the World Health Organisation, and effective catchment management underpins this approach. Effective management of our catchments will also make a significant contribution to meeting our obligations under the Water Framework Directive, by helping to address the serious issue of diffuse pollution from agriculture.     

高温工质冷凝换热试验台设计

系统介绍了高温工质冷凝换热试验台的设计方法。试验台由高温工质自然循环子系统、冷却水机械循环子系统和计算机监测控制子系统构成,试验段进出口温差及冷凝管进出口温度的测试、蒸汽锅炉充注量及液位控制、高温水箱自然作用水头的设计、冷却水流量计量水箱的设计等是试验台设计中值得重视的问题。根据误差分析结果,该试验台冷凝传热系数的相对误差为±7.19%,管内、管外的冷凝换热系数的相对误差分别为±4.95%和±8.73%。     

人工湿地污水处理技术综述

介绍了人工湿地的概念、类型及特点,同时分析了人工湿地处理污水的净化机理,并对人工湿地污水处理技术国内外研究现状进行了综述,同时指出该技术对于节省资金、保护水环境以及进行有效的生态恢复具有十分重要的意义.     

A multi-layer sampler for the study of detailed hydrochemical profiles in groundwater

A modular multi-layer sampler was developed and utilized for sampling undisturbed groundwater chemical profiles. Sampling at 3 cm depth intervals is based on the dialysis-cell method and has no depth limitations. The sampler may be used for water quality monitoring and research, both in existing or specially drilled screened wells     

我国饮用水卫生标准的变革及特点

从饮用水安全问题出发，介绍了我国生活饮用水水质标准的现状，剖析和比较了《城市供水水质标准》和《生活饮用水卫生标准》的特点，对检测项目、检测方法和指标值等方面的变革做了分析，同时与国外饮用水水质标准进行了比较，并提出了实施新水质标准存在的问题及建议。     

热水采暖定压系统压力表接点烧蚀的防止

介绍了热水采暖系统定压补水用电接点压力表接点烧蚀严重，耐久性差等问题的解决方法。     

压差控制水泵变频调节的工作特性探讨

通过引入控制压差比β的概念,导出了空调冷水泵变频扬程比和轴功率比的简化计算公式。经计算分析得出了不同β值下水泵压差变频的特性,指出β是影响水泵变频节能的关键因素。对比了一次泵和二次泵变频的β值,指出相同条件下一次泵变频的节能效果总是优于二次泵变频。     

水泵变频调速在供水系统中的应用

为达到更好的节能效果,依据武进水厂的运行经验,建议多台水泵并联运行时采用变频调速来控制.