膜污染是污水处理微/超滤工艺面临的巨大挑战。混合液有机物膜污染潜势的及时预警，对膜污染的有效预防意义重大。荧光光谱法由于能快速灵敏地提供极其丰富的有机物指纹信息，在膜污染潜势的实时监测与快速预警方面潜力巨大。本项目提出利用混合液有机物荧光指纹信息，预判膜污染的速率、分阶段发展倾向和污染层属性，为膜污染的预警和防控提供新的思路。本项目首先通过细化膜污染潜势指标、拓展挖掘荧光指纹信息、运用多层次的统计学分析方法，系统建立荧光特性与膜污染潜势之间的规律性联系，识别灵敏可靠的定性或半定量荧光指标；进而以荧光指标-有机物性质-膜污染潜势的逐级联系为线索，通过对荧光能量过程和分子结构的深入解析，揭示荧光指纹对膜污染潜势的内在响应机制；以此为科学依据，提出基于荧光指标的预警策略并在小试体系中加以验证，并进一步评测预警指导下的膜污染防控效果。本项目旨在为基于荧光指纹响应的膜污染预警技术开发提供理论支持。

Membrane fouling is a serious challenge to microfiltration and ultrafiltration processes for wastewater treatment and reclamation. Early warning of membrane fouling potential of mixed liquor organic matter is critical to the efficient control of fouling. Fluorescence spectroscopy is suggested as a promising tool for the rapid and sensitive early warning of fouling potential, with the real-time monitored fluorescence fingerprints quite informative for predicting the fouling rate, fouling evolution tendency, and foulant layer properties. The present project aims to establish the relationships between fluorescence fingerprints and fouling potential, and explore the underlying mechanisms to support the fluorescence-based early warning of membrane fouling. Statistical analyses will be systematically conducted to assess the qualitative or semi-quantitative relationships between detailed fluorescence properties and fouling potential indices. To elucidate the fouling-responsive feature of fluorescence fingerprints, the effect of organic matter properties on the the fluorescence excitation-emission process will be analyzed from the perspectives of fluorophore energy and molecular structure. On the basis of the relationships and mechanisms, a strategy for fluorescence-based early warning of membrane fouling will then be proposed. Finally, the effectiveness of the early warning and the early warning-aided fouling control will be examined in lab-scale systems. This project could promisingly provide theoretical and experimental foundations for the development of fluorescence-based technologies for early warning and efficient control of membrane fouling.