本powerpoint演示文稿首先简要概述了水处理化学品的成本趋势。棕榈滩县水资源公用事业部门的回应就是一个例子 由于化学品成本上升，包括 水处理工艺优化， 评估治疗方案，以及 竞标。 3号水处理厂（WTP）的工厂优化研究包括: 评估替代化学预处理方案； 重点减少硫酸进料；测试三种不同的防垢剂。给出了WTP 3的现有条件，以及化学预处理优化 中试试验、预处理化学品选择、中试操作条件和文本矩阵。试验结果如下: 原水水质；进料通道压降；膜生产力；预计的清洁频率；用于精确标度评估的溶质质量平衡；膜取证；还原酸预处理；还有成本效益。演示摘要包括以下内容:预处理优化增强性能、操作 安全，降低水资源生产成本； 优化的条件往往是特定于现场的； 防垢剂的进步可能会使酸完全消除； 必须谨慎行事，避免不利影响；测试起着重要作用； 评估必须超越膜过程 -后处理和浓缩物处理过程可能需要 调整/修改；和 在水处理生命周期中，化学品的影响更大 费用包括表格、数字。

This powerpoint presentation begins by providing a brief overview of water treatment chemical cost trends. An example is presented of the Palm Beach County Water Utilities Department's response to rising chemical costs that included water treatment process optimization, evaluating treatment alternatives, and competitive bidding. A plant optimization study for water treatment plant (WTP) No. 3 included: evaluating alternative chemical pretreatment options; focusing on reducing sulfuric acid feed; and, testing three different anti-scalants. WTP No. 3 existing conditions are given, along with chemical pretreatment optimization pilot testing, pretreatment chemical choices, pilot operating conditions, and text matrix. Pilot results are provided for: raw water quality; feed channel pressure drop; membrane productivity; projected cleaning frequencies; solute mass balances for refined scaling assessment; membrane forensics; reduced acid pretreatment; and, cost benefits. Presentation summary includes the following: pretreatment optimization enhanced performance, operational safety, and lowered water production cost; optimized conditions tend to be site-specific; anti-scalant advancements may enable full acid elimination; must proceed carefully to avoid adverse impacts; testing plays an important role; evaluations must go beyond the membrane process - post-treatment and concentrate disposal processes may require adjustment / modification; and, chemicals factor more heavily now in water treatment lifecycle cost. Includes tables, figures.