▎ 摘　　要

NOVELTY - Performing in-situ repair of organic nitrogen by three-dimensional electrodes involves using a Peterson dredger to collect sediment surface samples and overlying water with serious sediment pollution, preserving the sediment surface layer sample and the overlying water, then stirring and mixing the sediment surface layer sample and the overlying water, and using a device for in-situ repair of organic nitrogen with three-dimensional electrodes to process the mixture. USE - Method for performing in-situ repair of organic nitrogen by three-dimensional electrodes ADVANTAGE - The method can take into account both the complex environment of river and lake sediments and the solid-liquid, and realize the in-situ removal of nitrogen elements.