In this paper,ozone microbubble method was used to treat cyanide-containing electroplating wastewater continuously.The parameters of wastewater volume flow rate,ozone mass flow rate,UV lamp power density and reaction pipeline length were investigated.The content of cyanide-ion(CN-)was determined by spectrophotometer,and the best process conditions were obtained.When the volume flow rate of wastewater is 120 mL·min-1,the incoming mass flow rate of ozone is 11 g·min-1,the power density of UV lamp is 35 W·cm-1,and the length of reaction pipe is 20 m,the content of cyanide ion in wastewater is reduced to about 0.098 mg·L-1,ozone utilization rate is about 98.2％,which meets the national discharge standard.
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