Abstract:To optimize the technical method of microwave red mud adsorption of fluorine-containing wastewater, based on the response surface method (RSM), the influences of three influencing factors (microwave power, adsorption time and wastewater temperature) on adsorption rate of fluoride ions in red mud wastewater were established. The influence of each experimental factor or interaction on fluorine ion adsorption was studied by ANOVA. The results show that the optimum experimental conditions obtained after response surface optimization are microwave power of 308 W, wastewater temperature of 15 ℃, and adsorption time of 22 min. The predicted adsorption efficiency is 96.83%, and the actual adsorption efficiency is 96.08%. The regression model established by response surface can predict the adsorption rate of microwave red mud to adsorb fluoride ions in wastewater, and the error is only 0.77%.