The oxidation process in wastewater treatment is a chemical method in which organic and inorganic contaminants are broken down by oxidizing agents. In this process, oxidizing substances such as ozone, hydrogen peroxide, or potassium permanganate are introduced into the wastewater to alter the molecular structure of the pollutants and convert them into harmless end products such as water, carbon dioxide, and salts. This process is particularly effective in removing stubborn organic compounds that are difficult to break down using conventional biological methods. It offers high degradation performance and ensures a significant reduction in chemical oxygen demand (COD) and biochemical oxygen demand (BOD) in wastewater.