NOVELTY - The cubical nitrifying microbial fuel cell has anode chamber (I) with a cubic reactor (2) and a sealing cover (1). A water inlet pipe (6) and a water outlet pipe (7) are provided at the reactor lower and upper sides. The reactor middle portion is provided with aeration area (3) separated from reaction zone (4) by a separating plate (5). A power generating substrate (13) is provided above the reaction area. An anode (9) with a bacteria hanging film is provided in the reaction area. The reaction area top portion is provided with an anode lead wire fixing tube (16).    USE - Cubical nitrifying microorganism fuel battery.    ADVANTAGE - The ammonia oxidizing bacteria and nitrite oxidizing bacteria are used for denitrifying wastewater for preventing pollution and enabling biological power generation. The power generation substrate consisting of inorganic ion is used for reducing battery internal resistance, preventing release of carbon dioxide producing greenhouse effect and enabling production of clean energy. The fuel cell has simple structure, good performance and high energy utilization efficiency.    DETAILED DESCRIPTION - The cubical nitrifying microbial fuel cell has anode chamber (I), cathode chamber (II) and a proton exchange membrane (III). The anode chamber is provided with an anode chamber cubic reactor (2) and a sealing cover (1). A water inlet pipe (6) is provided at the lower side of the reactor. A water outlet pipe (7) is provided at the upper side of the reactor. The reactor middle portion is provided with aeration area (3) separated from a reaction zone (4) by a separating plate (5). A power generating substrate (13) is provided above the reaction area. An anode (9) with a bacteria hanging film is provided in the reaction area. The reaction area top portion is provided with an anode lead wire fixing tube (16). The aeration area is provided with a gas distribution pipe.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the structure of the cubical nitrifying microbial fuel cell.    Sealing cover (1)    Reactor (2)    Aeration area (3)    Reaction zone (4)    Separating plate (5)    Water inlet pipe (6)    Water outlet pipe (7)    Anode (9)    Power generation substrate (13)    Anode lead wire fixing tube (16)    Anode chamber (I)    Cathode chamber (II)    Proton exchange membrane (III)