NOVELTY - Sewage treatment of micro-charge comprises entering sewage to water distributor (1) and performing aeration treatment; conveying sewage at the bottom of the reaction tank (2); sending into the upper layer of water impeller (3), transmitting to the water tank (4) to form a pond stream; placing sewage in the metal medium (41) and connecting direct current (DC) power supply anode (5), metal medium and conductive connector terminal (42) to the cathode of the DC power supply to form an electric loop; and recycling to the water tank until sewage water quality meets the requirements, and discharging.    USE - Method for sewage treatment of micro-charge.    ADVANTAGE - The device can solve large pet organic sludge problem, and reduce secondary pollution.    DETAILED DESCRIPTION - Sewage treatment of micro-charge comprises entering sewage into water distributor by an aerator (11) and performing aeration treatment; conveying sewage at the bottom of the reaction tank, underlying sewage from bottom to top to form an biochemical reaction aerobic layer (A), anoxic layer (B), anaerobic layer (C) and natural breathing layer (D); sending into the upper layer of water impeller through the plug flow, transmitting to the water tank to form a pond stream and physical, chemical and biological reactions; placing sewage in the metal medium, connecting to the neutral conductive connector terminals; connecting metal medium to the direct current power supply anode; connecting conductive connector terminal to the DC power supply anode; connecting DC power supply anode, metal medium and conductive terminal to the cathode of the DC power supply to form an electric loop; and recycling to the water tank until sewage water quality meets the requirements, and discharging.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of micro-charge sewage treatment.    Water distributor (1)    Reaction tank (2)    Water impeller (3)    Water tank (4)    Direct current power supply anode (5)    Aerator (11)    Metal medium (41)    Neutral conductive connector terminals (42)