Treating pickle wastewater with high salinity by method of three-dimensional electrode of activated carbon
活性炭三维电极法处理超高盐榨菜腌制废水

Using particle activated carbon as particle electrode in three-dimensional electrode was applied to treat pickle wastewater with high salinity. Through static tests, the treatment effects of the methods of two-dimensional and three-dimensional electrodes were compared to remove COD and phosphates. Under the environment of three-dimensional electrode, because of the distance between main electrode plates, filling quantity of activated carbon, electrolysis time, electrolysis current and pH value, the efficiency of removing COD and phosphates were investigated. The results indicate that the three-dimensional electrode method is superior to two-dimensional. Under the conditions of wastewater volume of 600 mL, raw water pH (4.3~5.0), electrolysis current of 8 A, the amount of activated carbon filling quantity of 250 g, the distance between main electrode plates of 6.5 cm, electrolysis time of 150 min, COD and phosphates removal rates were 76.47% and 97.81%, respectively. Wavelength scan indicated that part of the organic matter were directly oxidized to carbon dioxide.