Device and method for automatic wind-power sewage aeration

The invention relates to a device and method for automatic wind-power sewage aeration, which comprise a wind blade, a transmission rod, an air compressor, a pipeline and aeration heads, the upper end of the transmission rod is connected with a rotary shaft of the wind blade, the lower end of the transmission rod is connected with the air compressor, the other end of the pipeline connected with the air outlet of the air compressor is provided with the aeration heads, and the aeration heads are uniformly placed into the bottom water body of a sewage tank. According to the sewage volume, the pipeline can be provided with a plurality of branches, and every branch is provided with one mircopore aeration head. When the wind blade rotates, the air enters the sewage in a micro-air bubble mode, and the dissolved oxygen density of the sewage is increased. The invention does not need to be provided with a wind-direction device and a speed limiter, has simple and reasonable structure, low manufacturing, installing and maintenance expenditure and high wind-power using rate, and effectively realizes aeration and increases the amount of the dissolved oxygen in the water body to reach the sewage processing effect. The method for aeration, which uses the wind power as power greatly reduces the energy consumption in the sewage processing process, and meets the national requirements of energy saving and discharge reduction.