Institute of Ecological and Environmental Sciences, College of Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, China; Global Centre for Environmental Remediation (GCER), University of Newcastle, Callaghan, NSW 2308, Australia; State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin 150090, China.
Institute of Ecological and Environmental Sciences, College of Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, China.
Ecotoxicol Environ Saf. 2023 Sep 15;263:115366. doi: 10.1016/j.ecoenv.2023.115366. Epub 2023 Aug 12.
Advanced oxidation processes (AOPs) based on ultrasound (US) have attracted considerable attention in recent years due to its advantages in the degradation of landfill leachate. The review summarizes the existing treatment methods of leachate from lab-scale, compares their advantages and disadvantages by focusing on the degradation of emerging contaminants (ECs) in the leachate. Then the US-based AOPs are introduced emphatically, including their degradation mechanisms, influencing factors, energy consumption, further optimization methods as well as the possibility of field-scale application are systematically described. Moreover, this review also expounds on the advantages of dual-frequency US (DFUS) technology compared with single-frequency US, and a theoretically feasible DFUS process is proposed to treat ECs in the leachate. Finally, suggestions and prospects for US technologies in treating landfill leachate are put forward to aid future research on landfill leachate treatment. Meaningfully, this manuscript will provide reference values of US-based technologies in landfill leachate treatment for the practical use, facilitating the development of US-based AOPs in landfill leachate management and disposal.
基于超声的高级氧化工艺（AOPs）近年来在垃圾渗滤液处理方面受到了广泛关注，因为其具有优势。本综述总结了实验室规模的渗滤液现有处理方法，通过重点关注渗滤液中新兴污染物（ECs）的降解，比较了它们的优缺点。然后着重介绍了基于超声的 AOPs，包括它们的降解机制、影响因素、能量消耗、进一步的优化方法以及现场应用的可能性，并系统地进行了描述。此外，本综述还阐述了双频超声（DFUS）技术相对于单频超声的优势，并提出了一种理论上可行的 DFUS 工艺来处理渗滤液中的 ECs。最后，针对超声技术在处理垃圾渗滤液方面提出了建议和展望，以辅助未来对垃圾渗滤液处理的研究。有意义的是，本文将为实际应用中基于超声的技术在垃圾渗滤液处理方面提供参考价值，促进基于超声的 AOPs 在垃圾渗滤液管理和处置方面的发展。
