饮用水源水中溶解性有机质协同去除微污染有机物的净化工艺调控原理

目前的饮用水源水中呈现出高浓度溶解性有机质（DOM）与痕量人工合成微污染有机物（OMPs）的复合污染特征，浓度远高于OMPs的DOM通过竞争或污染等作用机理抑制饮用水深度净化工艺对OMPs的有效去除。近年来，研究发现DOM可以通过疏水作用、氢键、离子交换等与OMPs在水中发生相互作用，这种结合除了会引起竞争的负面影响外，还可以在一定条件下对OMPs的净化效果产生促进作用。本研究通过开发磁性快速高效富集分离新手段，建立对不同亲疏水性（尤其是亲水性）DOM的分级方法，利用多维表征手段对不同组分DOM与OMPs的作用机制进行科学评价，力求阐明DOM特性与OMPs结合能力之间的匹配构效关系。在此基础上，系统研究不同深度净化工艺对DOM的去除特性及其对DOM与OMPs结合的影响机制，进而完善其调控机制，强化两者结合作用对饮用水深度处理工艺净化效果的正面影响，为饮用水安全保障提供理论依据与技术支撑。

In recent years, drink source water presents the composite contamination characteristics of dissolved organic matter (DOM) and synthetic organic micropollutants (OMPs). DOM with a concentration much higher than OMPs can inhibit the effective removal of OMPs during advanced processing through mechanisms of competition or pollution. In addition, some studies have found that DOM can interact with OMPs in water through mechanisms such as hydrophobic interaction, hydrogen bonding, and ion exchange. The interaction between OMPs and DOM may have a positive or negative impact on the removal of OMPs in water purification processes. On the basis of this background, this study developed a new method for efficient enrichment and separation of DOM based on magnetic solid phase extraction and established a method for fractionation of DOM with different polarities (especially hydrophilic). Meanwhile, a multi-dimensional characterization method was used to scientifically evaluate the mechanism of interaction between different components of DOM and OMPs, in order to clarify the structure-activity relationship between DOM characteristics and its binding ability with OMPs. Based on this, this research systematically explored the removal characteristics of DOM by different advanced treatment processes and the effect mechanism of DOM removal on the interaction between DOM and OMPs. Then this study further improved the regulation and control mechanism of different purification processes and strengthened the positive effect of the interaction between OMPs and DOM on the advanced purification processes of drinking water, in order to provide theoretical basis and technical support for ensuring drinking water safety.