The application of extraction method to treat phenol containing wastewater, the phenols in the wastewater enter the extraction phase, and the extraction phase is distilled to recover the phenols and regenerate the extractant. Therefore, the use of centrifugal extraction machine and solvent extraction method to treat phenol containing wastewater is a fast and efficient treatment method, and the extraction stage is crucial for phenol wastewater extraction experiments in centrifugal extraction machine solvent extraction method.

Centrifugal extractors have a wide range of applications in the fine chemical industry. With their high efficiency, speed, continuity, and controllability, they greatly improve the separation and purification efficiency and quality of chemical products, especially in situations involving complex liquid-liquid extraction processes.

Dimethylacetamide (DMAC) is widely used as a chemical raw material and organic solvent in industries such as petroleum, chemical, pharmaceutical, and pesticide. It has strong polarity, chemical stability, and biological toxicity.

TBP， Tri-n-butyl phosphate, also known as tributyl phosphate, is an organic phosphorus compound that contains phosphorus elements and butyl groups in its molecular structure. It is commonly used as an extractant in the chemical industry, especially playing an important role in liquid-liquid extraction processes. TBP has become an indispensable component in many key processes due to its excellent physical and chemical properties, such as high solubility and selectivity.

Dichloromethane is a common organic solvent with low polarity and high solubility, therefore it is often used as an extractant. The principle of dichloromethane extraction is mainly based on the difference in solubility of the target product in dichloromethane, in order to extract the target product from the mixture.