Emulsified wastewater has the characteristics of high organic matter concentration, high oil content, high turbidity, and small water volume, and is discharged intermittently. The vast majority of organic matter in emulsion wastewater comes from emulsified oil. Therefore, separating and demulsifying emulsion wastewater, followed by air flotation to separate oil and water, can effectively remove impurities from the wastewaterCODSignificantly reduced. Emulsified liquids undergo high-temperature decomposition, anaerobic decomposition, and impurity dissolution during use, causing some oils and fats to decompose into soluble organic compounds that dissolve in water. These soluble organic compounds are difficult to remove through physical methods such as air flotation, and are suitable for oxidation or biological treatment. However, due to the small amount of emulsion wastewater, intermittent discharge leading to significant fluctuations in water quality and quantity, and the use of fungicides in emulsions, the effectiveness of biological treatment is poor and even difficult to cultivate microorganisms. Therefore, it is suitable to use oxidation method to remove dissolved organic matter.

Formation of emulsion:Adding a large amount of surfactants to the emulsion reduces the surface free energy of the system, and the surfactant molecules are present in the oil-The water interface absorbs directionally and forms an interface facial mask,

Preventing the mutual collision and enlargement of oil droplets, enabling them to exist stably in water for a long time. Therefore, when treating emulsion wastewater, its stability must be disrupted,Try to eliminate or weaken the ability of surfactants to stabilize emulsions in order to achieve oil-water separation.Characteristics of emulsion wastewater:Emulsion wastewater, as a difficult to treat industrial wastewater, has extremely high chemical stability and pollution load. According to relevant information, the oil concentration in emulsion wastewater is as high as15 000 ~20 000 mg/L，CODreach18 000~35 000mg/L，BOD