Abstract
Oily pollutants are mainly composed of oily wastewater, oily sludge and oily waste gas. Oily pollutants are a hazardous waste, if it is not properly treated, it will bring serious negative effects. Therefore, oily pollutants have been included in the national hazardous waste list. This paper mainly summarizes the application of flocculation and coagulation in oily wastewater and oily sludge in recent years. Flocculation and coagulation are important means to treat oily pollutants. In recent years, great progress has been made in the research of flocculants and coagulants. In this paper, the application of flocculants and coagulants in the treatment of oily pollutants at home and abroad, the research status of various flocculants and coagulants, and the development direction of flocculants and coagulants are analyzed and summarized, providing theoretical basis and technical support for the application of flocculants and coagulants in the treatment of oily pollutants.
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