Study On Electro-generated Ferrate And The Treatment Of Organic Wastewater By It

Electrochemical preparation of a novel water treatment reagent ferrate(â…£) with cation-exchange membrane was explored. Factors of the structure of the cell, the anode materials and sustain of electrolysis on the current yield was discussed. It was discovered that the oxide film generated on the anode resulted in the descending of current yield by the analysis of SEM, and destruct the oxide film successfully by the method of adding intermittent negative square wave, so the higher current yield was maintained. Based on the fact that the instability of ferrate(â…£), fresh ferrate(â…£) prepared by electrolysis was released directly to wastewater to treat it. The treatment objects included the simulative wastewater of aniline, nitrobenzene and SDBS. The degradation reactions of these organic pollutants treated by ferrate(â…£) were disclosed by the analysis of ultraviolet spectra, infrared spectra and HPLC. A typical real wastewater landfill leachate was treated by ferrate(â…£) and the rule of removal of COD_Cr and NH₃-N was disclosed.