Abstract
The advanced oxidation process (AOP) is a technology formed in the 1980s to treat toxic pollutants. It takes hydroxyl radical (·OH) as the main oxidant to realize the degradation process of organic pollutants. The ·OH has an oxidation potential of 2.8 V, second only to the strongest fluorine (3.06 V). The free radical reaction can completely decompose organic substances into harmless products such as CO2 and H2O, etc. Hydroxyl radical, sulfate radical, superoxide radical, singlet oxygen, and hydrogen peroxide are considered active species in advanced oxidation technology to degrade pollutants. In this chapter, the basic principle, oxidation mechanism, functional materials, and application prospects for advanced oxidation treatment of “three wastes” (waste gas, waste water, and waste residue) by Fenton oxidation technology and persulfate activation oxidation technology are briefly reviewed.
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