中佛罗里达大学正在进行一项3000000美元的定制合作项目。 确定混合水水质对配水系统水质的影响。完成了 七种不同工艺的水在分配到不同的容器之前以不同的比例混合 一个设施中有18个试点配电系统（PDS），包括8500平方英尺的屋顶和4500平方英尺的屋顶 水泥垫的ft2。该设施持续运行。工艺包括常规地下水、软化、强化地表水、集成膜系统和反渗透 治疗PDS由镀锌、铸铁、内衬水泥和PVC管制成 从实际的分销系统。研究发现，碱度低于背景值（200 mg/L CaCO3）会导致50 CPU的表观颜色释放。 明显的颜色释放是由于 几乎完全与颗粒铁有关，与pH、LSI、钙和所有其他因素无关 与CaCO3相关指标相关的参数除碱度外，颜色释放也会受到影响 与氯化物和硫酸盐浓度呈正相关。颜色发布仍在继续 通过六个月的平衡和15个月的现场测试，CI管道接收的水更少 而不是背景碱度。总氯消散量和游离氯消散量由 模拟管道材料、UV-254、温度和时间对残余物的影响。现场数据和 模型预测表明:总氯或游离氯的消散率约为 镀锌管和CI管比内衬水泥管和PVC管大一个数量级； 在中国，镀锌管和CI管中所需的残余物的维护几乎是不可能的 夏季条件；管道材料是影响残余应力的最重要因素 配电系统中预期水质条件的维护。氢氧化铁 氢氧化铜似乎是基于表面和平衡的控制固体薄膜 分析。生物稳定性并未因薄膜破裂而改变，如图所示 明显的颜色释放。实地调查将持续到2003年6月。包括表格、数字。

The University of Central Florida is conducting a $3,000,000 Tailored Collaboration Project to determine the effects of blended water quality on distribution system water quality. Finished waters from seven different processes are blended in varying ratios before distribution to eighteen pilot distribution systems (PDS) in a facility that includes 8500 ft2 of roofing and 4500 ft2 of cement pad. The facility is operated continuously. Processes include conventional groundwater, softening, enhanced surface water, integrated membrane system and reverse osmosis treatment. The PDS were made from galvanized, cast iron, lined cement and PVC pipe taken from actual distribution systems. The study found that alkalinities less than background (200 mg/L CaCO3) have resulted in release of apparent color to 50 CPU. Apparent color release is due almost totally to particulate iron, and appears independent of pH, LSI, calcium and all other parameters associated with CaCO3 associated indexes except for alkalinity, Color release is also positively correlated with chloride and sulfate concentrations. Color release has continued through six months of equilibration and 15 months of field testing from CI pipes receiving less than background alkalinity. Total and free chlorine dissipation was accurately predicted by modeling residual as a function of pipe material, UV-254, temperature and time. Field data and model projections have shown: the dissipation rate of Total or free chlorine is approximately an order of magnitude greater in galvanized and CI pipe than in lined cement and PVC pipe; maintenance of required residuals in galvanized and CI pipe is practically impossible in summertime conditions; and, pipe material is the most significant factor affecting residual maintenance for expected water quality conditions in distribution systems. Ferric hydroxide and cupric hydroxide appear to be the controlling solid films based on surface and equilibrium analyses. Biological stability did not change as a result of film disruption as indicated by apparent color release. Field investigations will continue until June 2003. Includes tables, figures.