Research on Waste Leachate Treatment with Fenton Oxidation Technologies

Currently, the main method of disposal of municipal solid waste is sanitary landfill. However, a significant amount of leachate is produced during the landfilling process, which can lead to a series of environmental and economic problems. This paper reviews the research on Fenton and Fenton-like oxidation technologies in the treatment of waste leachate. The paper first introduces the characteristics of waste leachate and its hazards to humans and the ecological environment. Then, it will be followed by the technical principles and characteristics of the classic Fenton oxidation process. Starting from the limitations of classic Fenton in practical applications, the paper introduces combined oxidation technologies of ultrasound, microwave, light, and electricity with Fenton, and describes the different characteristics and optimal reaction conditions of various oxidation technologies. In practical applications, the most suitable oxidation technology can be selected based on the water quality characteristics of the leachate. Finally, introduce the development prospects and improvement methods of ultrasound-Fenton, microwave-Fenton, photo-Fenton, and electro-Fenton.