Modified Activated Carbon Assisted Microwave-Fenton Process For Treatment Of Active Brilliant Red X-3B Wastewater

Printing and dyeing wastewater is one of the typical organic wastewater that is difficult to treat.Its main characteristics are high organic matter concentration and chroma,and poor biochemical properties.Although conventional physical and chemical methods or biological methods have a certain treatment effect on printing and dyeing wastewater,the treatment efficiency is not ideal and has limitations.Fenton reagent has strong oxidation ability,low energy consumption,and stable treatment process.In recent years,more researches have been used to treat difficult-to-biodegradable organic wastewater.However,the processing effect of the traditional Fenton method cannot fully meet the requirements,and the processing cost is also high.This subject is mainly to study the treatment effect and process conditions of Fenton method on the treatment of reactive brilliant red X-3B wastewater with the assistance of microwave and modified activated carbon catalysts,and to provide a technical basis for the popularization and application of Fenton method in the treatment of printing and dyeing wastewater.Taking active bright red X-3B wastewater as a research object,the experimental results of the modified activated carbon-assisted microwave-Fenton method for the treatment of active bright red X-3B wastewater were studied.The main contents include: The effect of Fenton oxidation on the treatment of activated brilliant red X-3B wastewater and determination of process parameters;the effect of microwave-Fenton method on the treatment of activated brilliant red X-3B wastewater and determination of process parameters;activated carbon activation modification and modified activated carbon Preparation of catalyst;modified activated carbon-assisted microwave-Fenton method for treatment of activated brilliant red X-3B wastewater and optimization of process conditions.The Fenton oxidation method has a good treatment effect on the active brilliant red X-3B wastewater.When the p H value is 3,the dosage of hydrogen peroxide is 3m L,the dosage of ferrous sulfate is 3g,the shaking temperature is 40 ° C,When the shaking time is 80 min,the average removal rate of chromaticity is 85.99%,and the average removal rate of COD is 68.02%.The microwave-Fenton method is more effective than the Fenton method alone when the p H value is 3,the ratio of ferrous sulfate to hydrogen peroxide is 1:46,the microwave power is 560 W,and the microwave radiation is When the irradiation time is 15 minutes,the average removal rate of chromaticity is 90.01%,and the average removal rate of COD is 77.51%,which are 4.02% and 9.49% higher than the Fenton method alone,and the processing time is reduced from 80 min to 11 min.The addition of modified activated carbon catalyst can help improve the effect of microwave-Fenton method in the treatment of activated brilliant red X-3B wastewater.The results of the orthogonal test show that when the p H is 4,the amount of ferrous sulfate and hydrogen peroxide is 1:41,the amount of the modified activated carbon catalyst is 1.5g,the microwave power is 560 W,and the microwave irradiation time is The treatment effect was the best at 15 min.Under the optimal conditions,the average removal rate of chromaticity was 99.77%,and the average removal rate of COD was 89.92%.The modified activated carbon catalyst-assisted microwave-fenton method has ideal treatment effect on activated brilliant red X-3B wastewater,and the treated effluent water quality meets the limit requirements of the "Water Discharge Standard for Textile Dyeing and Finishing Industry(GB4287-2012)",Moreover,the reaction time is short,the reaction process is easy to control,the processing cost is low,and it has broad application prospects.