Paraffin wax soap is commonly used as a collector and frother in the flotation of non-ferrous and non-metallic minerals such as phosphate ore, tungsten ore, fluorite ore, spodumene ore, molybdenite, hematite, and bauxite. As a fatty acid collector, it contains long-chain fatty acids that readily form complexes with the surface of minerals, significantly enhancing the hydrophobicity of the mineral surface. Additionally, it possesses frothing properties, allowing it to replace various anionic collectors from fatty acid soaps. If wastewater treated with paraffin wax soap is not handled carefully and discharged into natural water bodies, it can increase the organic carbon content and biochemical oxygen demand, leading to an increase in organic pollutants and disrupting the ecological balance of the water system. Therefore, proper treatment of wastewater containing paraffin wax soap is of positive significance for environmental management and improvement. Phosphogypsum is a byproduct of wet-process phosphoric acid production, while fly ash is the fine ash collected from flue gas after coal combustion. Both are industrial solid waste materials. When used properly, they can have a positive impact on environmental improvement and secondary resource utilization. Phosphogypsum and fly ash have certain affinities for metal ions and organic matter, but their adsorption effect is not ideal. CeO2 as a... Rare earth reagents, primarily used as catalysts, catalyst carriers (additives), and UV absorbers, are characterized by their stable nature and non-reactivity with water and organic substances. Therefore, they are ideal for adsorbing organic solutions without affecting experimental results and serve as a perfect additive for photo-catalysis.