Micro-electrolysis unit

A seal vertical tower body micro-electrolysis device consists of a feed area (1), a reaction area (2), a separation area (3) and a froth breaking area (4) which are connected in series from up to down and are all cylinders; the feed area and the reaction area are separated by an air distribution plate (11); the reaction area and the separation area are sealed and connected by flanges; sieve combs are arranged between the lock rings of the flanges; the separation area and the froth breaking area are communicated and the surroundings are sealed and connected; the bottom part of the feed area (1) is provided with a sewage inlet (6) and a compressed air inlet (8); the reaction area (2) is formed by connecting one or a plurality of reaction columns with the same structures in series; each reaction column is filled by scrap irons and particle carbons; each reaction column is sealed and connected by the flanges; the sieve combs are arranged between the lock rings of the flanges; a water outlet overflow opening (5) i