Chlorophenol　wastewater　belongs　to　highly　toxic　industrial　wastewater,　which　can　cause　serious　harm　to　the　environment　and　human　health　if　not　treated　effectively.　The　current　treatment　methods　for　chlorophenol　wastewater　are　divided　into　physical,　chemical,　and　biological　methods.　The　physical　adsorption　experiment　found　that　the　monodisperse　magnetic　nano-column　was　prepared　by　the　solvothermal　method,　which　could　remove　91.5%　of　pentachlorophenol　within　30　mins.　More　than　90%　of　chlorophenol　can　be　extracted　using　an　ionic　liquid　as　an　extractant.　When　the　chlorophenol　reaches　15　g/L,　the　extraction　rate　only　slightly　decreases.　CaO　and　SiO2　can　achieve　99.0%　2,4,6-trichlorophenol　in　6　hours　as　ball　milling　materials　by　physical　and　chemical　methods.　The　electrochemical　reduction　test　found　that　using　Pd/Py　SDBS/Ti　as　the　cathode,　2-chlorophenol,　4-chlorophenol,　and　3-chlorophenol　could　be　reduced　and　dechlorinated,　in　which　100　mg/L　of　2-chlorophenol　could　be　completely　degraded　within　60　minutes.　The　biochemical　index　BOD5/COD　of　wastewater　is　less　than　0.3　if　the　biological　treatment　technology　based　on　co-metabolism　is　adopted　to　realize　the　chlorophenol　treatment.　In　treating　chlorophenol　wastewater,　the　application　scenario　should　be　fully　considered　to　achieve　the　best　treatment　effect　of　chlorophenol　wastewater.　©　2023　EDP　Sciences.　All　rights　reserved.