Study of the Disposal of Dye Wastewater with Internal Electrolysis Enhanced by Ozone

Taking actual dye wastewater as research object,the cooperated effects of ozone and internal electrolysis in degrading dyeing wastewater were discussed.The influencing factors were studied,such as mass ratio of iron scraps to granular activated carbon(GAC),mass of iron scraps,pH value,the dosage of ozone,and reaction time.The experiment showed that the decolonization and COD removal fates with the combination of ozone and internal electrolysis were significantly higher than those obtained from the treatment of ozone and internal electrolysis alone.Under the optimized treatment conditions,about 88.10% COD and 98.25% color could be removed with a pH value of 3 for wastewater,the ozone dosage of 300L/h,the total mass of iron and GAC of 100g(mass Fe/C=1:2),and the reaction time of 90min.