## 1 Introduction
\begin{table}
\begin{tabular}{c c c c} \hline \hline
**Method** & **Advantages** & **Disadvantages** & **Reference** \\ \hline cold plasma & high efficiency, non-thermal nature, and wide range of applicability & high cost of equipment and immature technology & [24] \\ ultrasound & fast, efficient, and non-polluting & device immaturity, energy consumption, and noise hazard & [25] \\ irradiation & non-polluting and highly efficient & high capital investment and high facility requirements & [26] \\ pulsed electric field & short processing time & high costs and inability to handle solids & [27] \\ Fenton & low energy consumption, low cost, and high efficiency & iron sludge production and catalyst wastage & [28] \\ photocatalysis & non-toxic and chemically stable & catalyst selectivity and high cost of efficient photocatalysts & [29] \\ electrochemical & wide degradation range and no toxic & electric power systems are not & [30] \\  & by-products & practical for large-scale application & \\ bioremediation & green, non-toxic, and completely degradable & microorganisms promote growth & [31; 32] \\  & & under harsh conditions; immature process for large-scale use & \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Advantages and disadvantages of some methods of dealing with pesticide residues. In the past, there have been many studies on the degradation of pesticides by chlorine dioxide and ozone. The reaction between chlorine dioxide and ozone with pesticides is influenced by factors such as pH value, temperature, and time. The reaction between chlorine dioxide and pesticides follows a second-order kinetic model, and the reaction rate constant increases with the increase in pH [33,34]. Chlorine dioxide undergoes electron transfer with the sulfide ether in methiocarb, removing hypochlorite and chlorite to produce by-products such as methiocarb sulfone and methiocarb sulfoxide [35]. The same reaction of chlorine dioxide with sulfide ether exists in the reaction of chlorine dioxide with azamethiphos [36]. The reaction between ozone and pesticides can be divided into two processes: direct reaction and indirect reaction [37]. These two processes follow a pseudo-first-order kinetic model [38]. As the pH increases, ozone decomposes to produce hydroxyl radicals, promoting indirect reactions and increasing the kinetic constants of indirect reactions. Ozone reacts with the electron-rich double bonds in dichlorvos, and the direct reaction of ozone produces an oxygen-containing cyclic structure, and the indirect reaction reacts with the double bonds in an addition reaction to produce a hydroxyl structure [39]. At present, studies on the degradation mechanism of pesticides by chlorine dioxide and ozone have been reported, but fewer articles systematically summarize the mechanism of pesticide degradation by chlorine dioxide and ozone for pesticides as a pollutant. Therefore, from the structure of chlorine dioxide and ozone as a starting point, we focused on the study and comparison of the mechanism of these two advanced oxidation technologies in the food and water treatment industries to deal with pesticide residues and to clarify the applicable conditions of these two oxidants. It is hoped that this will provide a theoretical basis for future research on pesticide degradation residues and that the two oxidants, chlorine dioxide and ozone, can be used rationally when facing different types of pesticides.