Microbial fuel cell artificial wetland device for sewage treatment and power supply to wetland

The invention discloses a microbial fuel cell artificial wetland device for sewage treatment and power supply to wetland. The device comprises a microbial fuel cell wetland main body and a current collection and energy storage system, wherein the microbial fuel cell wetland main body sequentially comprises a seepage-prevention layer, an anode packing layer, an insulation packing layer, a cathode packing layer and aquatic plants from bottom to top; an aeration device of which the aeration quantity can be adjusted is laid at the bottom of the cathode packing layer; and the current collection and energy storage system comprises an anode electrode, a cathode electrode, an external connection wire for connecting the anode electrode with the cathode electrode, and an energy storage device and an electric energy output device which are connected in series by the external connection wire. The device integrates functions of high-efficient sewage treatment and energy generation, is low in cost, and is easy to maintain, externally applied voltage is unnecessary during the whole process, the generated electric energy can be applied to the system according to demands, and thus, sewage treatment and high-efficient cyclic utilization of resources are achieved. The device is particularly suitable for urban wetland parks.