METHOD FOR REMOVAL OF AZO DYE-WASTE WATER USING ZERO-VALENT IRON

摘要

An object of the present invention is to effectively remove the color and organic matter of azo dye wastewater by controlling the initial pH, the amount of iron iron, the amount of hydrogen peroxide, the amount of hydrogen peroxide and the time of injecting the iron and hydrogen peroxide to optimum conditions. There is this.;The azo dye wastewater treatment method using the iron-based iron according to the present invention is the first step of stirring while injecting an aqueous sodium borohydride solution into the ferric chloride aqueous solution, after collecting the iron-iron precipitated by the first step, washed with distilled water And a second step of filtration with a filter, a third step of washing the ductile iron with acetone, a fourth step of dispersing the ductile iron using ultrasonic waves, and a fifth step of adjusting the pH of the azo dye wastewater to 2.5 to 3.5. The method includes a sixth step of removing chromaticity by injecting the ferrous iron into the azo dye wastewater and a seventh step of removing organic substances by injecting hydrogen peroxide into the azo dye wastewater.;Azo, Young Iron, Sodium borohydride, Ferric Chloride, pH