在城市污水厂出水中去除药物和个人护理用品(PPCPs)类新兴污染物对于控制水体污染，保障污水厂出水的生态安全性和实现城市污水的再生与循环利用具有重要意义。本项目旨在提升紫外发光二极管(UV-LED)高级氧化技术在污水厂出水中降解PPCPs的效能；采用中心波长为UVA和UVB的UV-LED作为光源降低污水厂出水中背景吸光对氧化剂光解的影响；在UVA和UVB波长下筛选具有较高摩尔吸光系数的氧化剂，考察这些氧化剂的量子产率和对自由基的淬灭效应，进而选择在对应波长下光解速率快且对自由基淬灭效应低的氧化剂，通过波长和氧化剂的匹配提高UV-LED高级氧化体系中稳态自由基的浓度；评价UV-LED高级氧化在实际污水厂出水中降解PPCPs的效能并构建基元反应动力学模型，依托该动力学模型阐释自由基的反应途径、探讨水体基质的影响、优化反应参数，为推动UV-LED高级氧化技术的实际应用提供重要的理论和实践依据。

The removal of pharmaceuticals and personal care products (PPCPs) in municipal wastewater effluents is vital for controlling water pollution, reducing potential risks to the receiving ecosystems and reclaiming wastewater. This project aims to enhance the efficiency of UV-LED-based advanced oxidation processes (AOPs) to degrade PPCPs in wastewater effluents. UV-LEDs with UVA and UVB wavelengths will be used as light sources to reduce light scattering and absorbance in wastewater effluents. Oxidants will be selected based on their molar absorption coefficients, quantum yields and scavenging effects towards radicals. The optimal combinations of wavelengths and oxidants with higher photolysis rates and lower scavenging effects are expected to increase the steady-state concentrations of radicals during AOP treatment. The efficiency of UV-LED AOPs with chosen wavelengths and oxidants to degrade PPCPs will be assessed in real wastewater effluents. In the meanwhile, a kinetic model will be developed to elucidate the reaction pathways of radicals, explore the impact of wastewater matrices on PPCPs degradation and optimize reaction parameters. The findings in this project will provide useful theoretical and technical information for real-world applications of UV-LED AOPs.