Trichlorophenol is mainly used in industry to produce dye intermediates, pesticides and preservatives. Due to substandard discharge, it often appears in wastewater in coking, printing and dyeing, wood anti-corrosion and other industries, and the presence of trichlorophenol has been detected in natural water bodies. 2, Chemicalbook4,6-trichlorophenol (2,4,6-TCP), as a typical and widely used industrial raw material, has a "three-cause" effect on the human body and aquatic animals and plants, belongs to toxic organic pollutants, and has been listed as a priority control pollutant by the US Environmental Protection Agency.