Novel rotary aeration device for sewage treatment

The invention provides a novel rotary aeration device for sewage treatment. The novel rotary aeration device comprises a sewage treatment tank main body, a connecting mechanism mounted in the middle in the treatment tank main body and comprising an air inlet pipe and a supporting column; and an aeration mechanism comprising an air chamber mounted at the top of the supporting column, wherein the air chamber comprises an air chamber lower part (also serving as a rotary positioning center) fixed at the top of the supporting column and a rotary air chamber upper part, and the air chamber upper part is provided with bent pipes in four directions to be communicated with an annular pipe. A sealing mechanism sealed by graphite packing is arranged between an upper air chamber and a lower air chamber. The annular pipe is connected with eight transverse pipes arranged in a star shape, each transverse pipe is connected with three vertical pipes, each vertical pipe is connected with an aeration pipe, and an aeration disc