Abstract:Benzalkonium chloride is a quaternary ammonium salt bactericide, which is widely used in food processingmedical environment, medical environmentfamily and family, and especially its application in chemical production has led to the contamination of the aquatic environment. Traditional biological treatment methods cannot effectively degrade benzalkonium chloride, and advanced oxidation technology has received widespread attention. The article reviewed the ozone oxidation technology, photocatalytic oxidation technology, Fenton oxidation technology, persulfate oxidation technology, etc., and elaborated the advantages and disadvantages of the above technologies and mechanisms, and analyzed their degradation effects and degradation pathways in the light of the progress of the application of advanced oxidation technology in the treatment of benzalkonium chloride pollutants in recent years. It provides reference for further research and application of advanced oxidation technology in the treatment of benzalkonium chloride pollutants in the future.
