NOVELTY - An electric biologic strengthening device comprises a pool body (25), which is equipped with a cover board (17), of which two ends are respectively equipped with water inlet (1) and water outlet (23), and of which the interior is divided into biologic decarbonizing area (2), biologic denitriding area (3) and artificial wetland dephosphorizing area (4) in sequence by dividing plates. The biologic decarbonizing area is equipped with multiple ascending chambers and descending chambers. Upper and lower baffle plates on two sides of the ascending chambers are attached with active carbon fiber (9).    USE - An electric biologic strengthening device for treating household sewage (claimed).    ADVANTAGE - The device has simple and compact structure, low occupation space, low energy consumption, and high treating efficiency; and combines biologic and micro-electrolytic manners integrally.    DETAILED DESCRIPTION - An electric biologic strengthening device comprises a pool body (25), which is equipped with a cover board (17), of which the two ends are respectively equipped with a water inlet (1) and a water outlet (23), and of which the interior is divided into a biologic decarbonizing area (2), a biologic denitriding area (3) and an artificial wetland dephosphorizing area (4) in sequence by dividing plates. The biologic decarbonizing area is equipped with multiple ascending chambers and descending chambers formed by the division of upper baffle plates (7) and lower baffle plates (6). The ascending chambers are filled with fixed fillers. The upper and lower baffle plates on two sides of the ascending chambers are attached with active carbon fiber (9). The active carbon fiber of the upper baffle plates is connected with cathode of a current stabilizing transformer (24). The biologic denitriding area is equipped with ascending dividing chambers and descending dividing chambers formed by the division of multiple upper and lower baffle plates (8) and (10). Multiple layers of stainless steel screens (11) and porous graphite plates (12) at intervals are mounted between the upper and lower baffle plates and on two sides of the ascending dividing chambers. The porous graphite plates on the uppermost end are substituted by the active carbon fiber. The stainless steel screens are under every layer and connected with the cathode of the current stabilizing transformer. The porous graphite plates are above every layer and connected with the anode of the current stabilizing transformer. The active carbon fiber on the uppermost end is connected with the anode of the current stabilizing transformer. The direct current voltage of the current stabilizing transformer is 4-12 V, and the current is 20-80 mA. The cover board is equipped with multiple manholes and exhaust holes. The fixed fillers are hollow balls.    DESCRIPTION OF DRAWING(S) - The drawing is a schematic diagram illustrating an electric biologic strengthening device.    Water inlet (1)    Biologic decarbonizing area (2)    Biologic denitriding area (3)    Artificial wetland dephosphorizing area (4)    Lower baffle plates (6)    Upper baffle plates (7)    Baffle plates (8,10)    Active carbon fiber (9)    Stainless steel screens (11)    Porous graphite plates (12)    Cover board (17)    Water outlet (23)    Current stabilizing transformer (24)    Pool body (25)