该项目的目标是开发一种后处理氧化工艺，用于去除膜浓缩物中的有机物。对几种能够氧化有机物的技术进行了评估，包括:Fenton反应，有铁凝固和无铁凝固；有过氧化氢和无过氧化氢的臭氧；单独使用过氧化氢或二氧化钛进行紫外线照射；还有，湿化学品 氧化大部分研究是用斯科茨代尔市水学院部分反硝化废水的反渗透浓缩液进行的。 反渗透浓缩物的溶解有机碳（DOC）浓度为40至50 mg/L，总溶解固体（TDS）浓度为 约5500 mg/L。还研究了一种膜清洗液。氧化实验是使用小型装置进行的。除了标准实验室测试系统外，还评估了两个专有的高级氧化工艺（AOP）系统。第一个系统（应用技术公司的HiPOx）提供过氧化氢和臭氧。实验室规模的装置将臭氧作为气体提供给快速循环样品（RO浓缩物），样品中添加了高浓度（100至1000 mg/L）的过氧化氢。 第二个系统（Purifics Inc.的Photo™是一个集成的紫外线（UV）照射和陶瓷膜系统，允许二氧化钛的内部再循环。在研究过程中，收集了反渗透浓缩物，并在小型反应器中进行处理。监测了DOC损失与化学剂量和能量输入的关系。还监测了其他有机参数的变化（例如254 nm处的紫外吸收率、化学需氧量、有机酸和可生物降解成分的浓度）。 在选择性实验中，使用探针化合物（对氯苯甲酸）估计羟基自由基的稳态浓度。仅包含摘要。

The goal of this project was to develop a post-treatment oxidation process for removing organics in membrane concentrates. Several technologies capable of oxidizing organics were evaluated, including: Fenton reactions with and without subsequent iron coagulation; ozone with and without hydrogen peroxide; UV irradiation alone, with hydrogen peroxide, or with titanium dioxide; and, wet chemical oxidation. Most of the research was conducted with concentrate from reverse osmosis (RO) of partially denitrified wastewater at the City of Scottsdale Water Campus. The RO concentrate had a dissolved organic carbon (DOC) concentration of 40 to 50 mg/L and total dissolved solids (TDS) concentration of ~ 5500 mg/L. One membrane cleaning solution was also studied. Oxidation experiments were conducted using bench-scale units. In addition to standard laboratory test systems, two proprietary advanced oxidation process (AOP) systems were evaluated. The first system (HiPOx from Applied Technologies Inc.) feeds hydrogen peroxide and ozone. The lab-scale unit supplies ozone as a gas to a rapidly recirculating sample (RO concentrate) spiked with high levels (100 to 1000 mg/L) of hydrogen peroxide. The second system (PhotoCat™ by Purifics Inc.) is an integrated ultraviolet (UV) irradiation and ceramic membrane system that permits the internal recirculation of titanium dioxide. Over the course of the study, RO concentrate was collected and subjected to treatment in the bench-scale reactors. The loss of DOC as a function of chemical dosage and energy input was monitored. Changes in other organic parameters (e.g., UV absorbance at 254 nm, chemical oxygen demand, concentrations of organic acids and biodegradable components) were also monitored. During select experiments, the steady state concentration of hydroxyl radicals was estimated using a probe compound (parachlorobenzoic acid). Includes abstract only.