Catalytic oxidation and autotrophic denitrification array electrode and preparation method thereof

The invention relates to a catalytic oxidation and autotrophic denitrification array electrode and a preparation method thereof. The catalytic oxidation and autotrophic denitrification array electrode comprises a catalytic oxidation cathode, an autotrophic denitrification anode, an inter-electrode insulating layer, a connecting wire, a constant-voltage direct-current power supply and a packaging micron non-woven fabric, the catalytic oxidation cathode is composed of carbon fiber felts and a manganese dioxide powder and conductive powder mixed layer, the carbon fiber felts and the manganese dioxide powder and conductive powder mixed layer are bonded through a conductive adhesive, and the carbon fiber felts are located on the two sides of the manganese dioxide powder and conductive powder mixed layer. The micro-electric field driven catalytic oxidation and autotrophic denitrification electrode is characterized in that an autotrophic denitrification anode is composed of carbon fiber felts and a pyrite powder and