本幻灯片演示概述了在分配储罐中保持消毒剂残留物的信息。涉及的主题包括:配水箱水质差的发展；预防方法；包括CFD建模结果在内的工具；3DLIF建模结果；经验公式；蓄水类型；短路；混合方程和混合时间比较；速度矢量——等温和负浮力；CFD模型；负浮力射流的最大上升；垂直射流的终端上升高度；水质问题及其原因；通过监测确定死区；温度和Cl₂残留数据；保持水库水质； 水周转率指南；优化水库内水质的基本原则；要避免的入口配置；入口/出口分离；圆形地面水库的典型鸭嘴管汇配置；并将鸭嘴兽与等效管径进行水力比较。概述了几个案例研究，包括:尤金水电局（2）1mg水库；马萨诸塞州马什皮水区，1mg复合高架水箱；罗得岛州纳拉甘塞特镇，750000加仑槽式水瓶；纽约肖茨维尔，250000加仑立管；还有湖岸水库。还概述了2002年AwwaRF主动提出的研究提案，题为“储水箱中混合的物理和数值模拟”。 AwwaRF的研究总结结果包括:多个入口将混合时间缩短至 35%（相同动量）； 负浮力，多个入口 当单个入口不可用时，可混合储罐； 低动量和浮力射流（+或-） 永远不要混合油箱；和 同时加注和抽取油箱需要更长的时间 混合。

This slide presentation outlines information on maintaining disinfectant residuals in distribution storage tanks. Topics covered include: development of poor water quality in distribution tanks; methods to prevent it; tools including CFD modeling results; 3DLIF modeling results; empirical formulas; types of water storage; short-circuiting; mixing equation and mixing time comparison; velocity vectors - isothermal and negative buoyancy; CFD Model; maximum rise of negatively buoyant jet; terminal rise height of vertical jet; water quality problems and their causes; identifying dead zones by monitoring; temperature and Cl₂ residual data; maintaing water quality in reservoirs; guidelines on water turnover rate; basic principal for optimizing water quality within a storage reservoir; inlet configurations to avoid; inlet/outlet separation; typical duckbill manifold configuration for circular ground level reservoirs; and, hydraulic comparison duckbill to equivalent pipe diameter. Several case studies are outlined that include: Eugene Water and Electric Board, (2) 1mg reservoirs; Mashpee Water District, Massachusetts, 1mg composite elevated tank; Town of Narragansett, Rhode Island, 750,000 gallon fluted hydropillar; Shortsville, New York, 250,000 gallon standpipe; and, Lakeshore Reservoir. Information is also outlined on the 2002 AwwaRF unsolicited research proposal titled, "Physical and Numerical Modeling of Mixing in Water Storage Tanks". The AwwaRF research summary results include: multiple inlets reduce mixing times up to 35% (same momentum); with negative buoyancy, multiple inlets can mix a tank when a single inlet will not; low momentum and buoyant jets (+ or -) may never mix the tank; and, simultaneous fill & draw tanks take longer to mix.