▎ 摘　　要

NOVELTY - Sewage denitrogenation device based on alternating current electrolysis comprises electrolytic cell, electrolytic plate, electrolytic filler layer and alternating current variable frequency power supply, and at least two electrolytic plates are installed in electrolytic cell, and there is a gap between electrolytic plates. The gap between electrolytic plates is filled with electrolytic material to form electrolytic filler layer. The leftmost and rightmost electrolytic plates in electrolytic cell are electrically connected to alternating current variable frequency power supply. The surface of electrolytic plate is sprayed with functional layer. The raw material components of functional layer comprises ferroferric oxide and carbon materials. USE - Sewage denitrogenation device based on alternating current electrolysis. ADVANTAGE - After electrolytic treatment, the nitrate nitrogen and ammonia nitrogen in sewage are converted into nitrogen and separated from the sewage, and total nitrogen and ammonia nitrogen indicators in sewage removed to satisfy discharge standards.