斯科茨代尔市计划扩建亚利桑那州中部项目（CAP） 水处理厂（WTP）通过添加30 MGD，净总产量为80 MGD。作为污水处理工艺选择和概念设计的一部分 30 MGD扩建，对各种备选方案进行了详细评估 进行。采用基于研讨会的方法确定了13个 配置，列出四个备选方案，并选择一个处理工艺序列。 最终，侧流处理（称为工厂III）包括 速率澄清和膜过滤（MF）被选为最有效的方法 工厂扩建的适当工艺配置。最初，溶解的空气 选择浮选（DAF）作为高澄清率；然而，在 在试点测试中，澄清技术被扩展到包括沙子 压载絮凝（SBF）。 CAP WTP进行了为期五个月的试点研究，以评估 澄清和膜过滤技术的性能，以及 拟建30 MGD发电厂设计的运行参数。 这个 测试的澄清技术包括两个DAF系统和沙子 压载絮凝（SBF）。请注意，SBF是在后来的试点中引入的 测试程序，仅测试了大约一个月。五 膜制造商提交了他们的资格声明（SOQ） 参与试点项目。在审查SOQ后，三个 选择了一些系统进行试点测试。整个试点项目分为两个阶段。 第一阶段包括优化操作参数，然后 DAF和膜装置的长期运行。完工后 在最初的优化阶段，DAF系统以接近 稳态模式，最大限度地减少供水水质的变化 膜系统。MF部门连续两次参与 使用化学清洁剂在两个容器之间进行通量确认试验 测验。 第二阶段是延长试验期，以测试DAF和SBF装置 在环境和人工提高浊度的条件下。包括表格、数字。

The City of Scottsdale (City) plans to expand the Central Arizona Project (CAP) Water Treatment Plant (WTP) by adding 30 MGD for a net total production of 80 MGD. As part of the treatment process selection and conceptual design for the 30 MGD expansion, a detailed evaluation of the various alternatives was conducted. A workshop-based approach was used to identify thirteen configurations, short-list to four alternatives, and select a treatment process train. Ultimately, a side-stream treatment (referred to as Plant III) consisting of high rate clarification and membrane filtration (MF) was selected as the most appropriate process configuration for the plant expansion. Initially, dissolved air flotation (DAF) was selected as the high-rate clarification; however, during the pilot testing, the clarification technology was expanded to also include sand ballasted flocculation (SBF). A five-month pilot study was conducted at the CAP WTP to evaluate the performance of clarification and membrane filtration technologies and to establish operating parameters for the design of the proposed 30 MGD plant. The clarification technologies tested consisted of two DAF systems and sand ballasted flocculation (SBF). Note that the SBF was introduced later in the pilot testing program and was only tested for approximately one month. Five membrane manufacturers submitted their Statement of Qualifications (SOQ) for participation in the pilot program. After review of the SOQs, three membrane systems were selected for the pilot testing. The entire pilot project was divided into two phases. Phase I consisted of optimization of operating parameters followed by long-term operation of the DAF and membrane units. After the completion of the initial optimization phase, the DAF systems operated in a near steady-state mode to minimize the variations in the water quality feeding the membranes systems. The MF units participated in two consecutive flux confirmation tests with a chemical clean performed between the two tests. Phase II was the extended pilot period to test the DAF and SBF units under ambient and artificially elevated turbidity conditions. Includes tables, figures.