本powerpoint演示文稿首先简要概述了消毒副产物（DBP），以及立管曝气和氯接触池曝气作为控制小型水系统中DBP的潜在解决方案。介绍了平衡的曝气动力学基础，以及亨利的恒温原理 修正方程。实验方法包括扩散曝气的实验室规模研究，以评估空气流量、接触时间（空气/水比）、扩散器的选定设计变量 布置（气泡大小）和选定的操作条件，包括空气温度、水温和THM浓度。实验室规模的实验 结论: 水温和空气水比 对清除有显著影响； 空气温度和初始浓度 对患者没有显著影响 清除；和 泡沫分布似乎没有改变 对整体清除量有显著影响。扩散曝气评估总结表明:一个简单的空气扩散器可以放置在一个储罐或 用于去除THM的氯接触池； 对小型系统THM合规性有效； 不移除哈斯； 对氯仿最有效；和 在天气温暖的月份最有效。喷雾曝气的中试研究包括: 评价温度对喷雾曝气的作用 清除率； 在清除百分比和 曝气设备的物理特性 关于THM物种的亨利常数；和 评估运行参数的作用（例如运行参数 确定质量时的压力/水头损失和流速） 传递系数和界面表面积（KLa）。给出了喷雾曝气试验示意图，得出的结论如下: 曝气提供了一种去除三卤甲烷的方法 以最少的资本投资组建； 温度对去除率有显著影响 效率； 扩散曝气可以实现显著的去除 基于空气水比；和 喷雾曝气可以显著去除水中的污染物 THM主要取决于淋浴头类型和 水滴移动距离。包括表格、数字。

This powerpoint presentation begins by providing a brief overview of disinfection byproducts (DBP), along with stand pipe aeration and chlorine contact basin aeration as potential solutions for controling DBPs in small water systems. Aeration kinetic basics of equilibrium are presented, along with Henry's Constant Temperature Correction Equation. Experimental methodology included a bench-scale study of diffused aeration to assess selected design variables of air flow rate, contact time (air/water ratio), diffuser arrangement (bubble size), and selected operating conditions including air temperature, water temperature, and THM concentration. Bench scale experimental conclusions: water temperature and air to water ratio have a significant effect on removals; air temperature and initial concentration did not have a significant effect on removals; and, bubble distribution did not appear to have a significant effect on overall removals. The diffused aeration assessment summary indicates: a simple air diffuser can be placed in a storage tank or chlorine contact basin for THM removal; effective for small system THM compliance; no removal of HAAs; most effective for chloroform; and, most effective during warm weather months. A pilot-scale study on spray aeration included: evaluating the role of temperature on spray aeration removal rates; developing a relationship between percent removals and physical characteristics of aeration equipment with respect to Henry's constants of THM species; and, assess the role of operating parameters (e.g. operating pressure / head loss and flow rate) in determining mass transfer coefficients and interfacial surface area (KLa). Spray aeration pilot schematic is presented, and conclusions indicated: aeration provides a way to remove THMs after they have formed with a minimal capital investment; temperature has a significant effect on removal efficiencies; diffused aeration can achieve significant removals based on air to water ratio; and, spray aeration can achieve significant removals of THMs dependent primarily on shower head type and droplet travel distance. Includes tables, figures.