养殖废水中抗生素和重金属复合污染物对水环境安全的威胁日益严峻，对其高效同步去除仍是当前水处理的难题之一，特别是复合污染物的交互作用对共去除的影响机制复杂，亟待稳定、安全的处理技术。本项目采用不同天然高分子原料负载优化合成新型Fe(III)@海藻酸复合水凝胶球，吸附和光催化耦合高效去除养殖废水中典型的四环素类抗生素-铜离子配合物（TCs-Cu）。拟解决两个科学问题：（1）TCs和Cu的共吸附机制；（2）金属Fe/Cu对TCs光降解的协同机制。通过分析反应前后材料的表界面特性，探究氢键作用和Cu的架桥作用等对TCs-Cu的吸附行为，阐明Fe/Cu的电子传递、活性氧物种的作用以及TCs降解和矿化过程，推断配合物中TCs的光降解途径。项目旨在发展环境友好材料的吸附-光催化耦合技术和揭示复合污染物的交互作用，为复合污染废水提供理论基础和参考方法，了解抗生素-重金属配合物在环境中的传播和控制。

The combined pollution of antibiotics and heavy metals in aquaculture wastewater is an increasingly serious threat in the safety of water environment. The efficient simultaneous removal of antibiotics and heavy metals has remained a difficult issue in waste water treatment. In particular, the influence of combined pollutants mutual interaction on co-removal is complex. Therefore, a stable and safe treatment technology is urgently required. A new Fe(III)@alginate composite hydrogel bead will be synthesized optimally by loading different natural polymers, and the typical tetracyclines complexes with copper ions (TCs-Cu) in aquaculture wastewater will be removed effectively by the coupled of adsorption and photocatalysis. In this project, we will deep dive in the following two scientific questions: (1) The co-adsorption mechanism of TCs and Cu; (2) The synergistic mechanism of Fe/Cu on the photo-degradation of antibiotics. To achieve these goals, the adsorption behaviors, such as hydrogen bonding and Cu bridging, will be studied by analyzing the surface and interface characteristics of the materials before and after reaction. Additionally, the electron transfer of Fe/Cu, the role of active oxygen species, the process of TCs degradation and mineralization will be elucidated to clarifying the TCs photolysis pathway in the complexes. The project is designed to develop the coupling technique of adsorption and photocatalysis with environmentally friendly materials and reveal the mutual interaction of combined pollutants, which will provide theoretical basis and reference methods for the treatment of complex polluted wastewater, and help to further understand the spread and control of heavy metals and antibiotics complexs in the environment.