Antibiotics degradation remains a longstanding challenge in wastewater treatment. Towards this objective, we have developed a novel technique combining cavitating jets impingement with multiple synergetic methods, i.e., UV/Fenton, analogous Fenton, and photocatalytic oxidation in the present work. Three kinds of antibiotics namely amoxicillin, doxycycline and sulfadiazine sodium, are selected as model pollutants. Individual application of cavitating jets impingement was firstly conducted to evaluate the effects of jets impinging forms and nozzle inlet pressure. The effects of impingement on promoting antibiotics degradation and weakening the coalescing effects of cavitation bubbles are confirmed. Perpendicular double cavitating jets impingement is proved to be the most effective impinging form and brought a COD (chemical oxidation demand) reduction of 30.04% with the impinging effect index 1.22 at jet inlet pressure 10 MPa. Increasing the jet inlet pressure can improve the COD reduction and the effectiveness of impingement. Subsequently, UV/Fenton process is introduced to intensify the degradation process. The effects of important parameters are investigated by means of orthogonal experiments and the maximum COD reduction is up to 71.16% under the optimum conditions. Then, analogous Fenton process and photocatalytic oxidation are adopted for further enhancing the COD reduction. Different approaches used in the present work are assessed in view of multiple aspects. With COD reduction of 79.92%, the combination of cavitating jets impingement, UV/Fenton, analogous Fenton and photocatalytic oxidation is proved to be optimum method for antibiotic wastewater treatment.

抗生素降解仍然是废水处理中的长期挑战。为了实现这一目标，我们在本工作中开发了一种新颖的技术，将空化射流撞击与多种协同方法相结合，即UV / Fenton，类似Fenton和光催化氧化。选择了阿莫西林，强力霉素和磺胺嘧啶钠三种抗生素作为模型污染物。首先分别进行了空化射流冲击的应用，以评估射流冲击形式和喷嘴入口压力的影响。证实了撞击对促进抗生素降解和减弱空化气泡的聚结作用的作用。垂直双空化射流撞击是最有效的撞击形式，在射流入口压力为10 MPa时，其COD（化学氧化需求）减少了30.04％，撞击效果指数为1.22。增加射流入口压力可以改善COD降低和撞击效果。随后，引入UV / Fenton工艺以增强降解过程。通过正交试验研究了重要参数的影响，在最佳条件下，最大COD减少量高达71.16％。然后，采用类似的芬顿法和光催化氧化法进一步提高了化学需氧量的还原。鉴于多个方面，对当前工作中使用的不同方法进行了评估。COD减少了79.92％，