Integrated device for treatment of sewage with low carbon-to-nitrogen ratio

The utility model relates to an integrated device for treatment of sewage with low carbon-to-nitrogen ratio and belongs to the field of sewage treatment. The device comprises an anaerobic tank, an anoxic tank, an aerobic tank and a sedimentation tank which are sequentially connected, and a clean water tank and a sludge tank which are respectively connected with the sedimentation tank. The integrated device is characterized in that an intermittent aeration device in which a carbon source can be added is arranged in the anoxic tank, the aeration device comprises a functional bin arranged inside the anoxic tank, a blast blower arranged outside the anoxic tank and a blast pipe for connecting the functional bin and the blast blower; the blast pipe is connected with a material storage bin in which a carbon source can be added and the functional bin comprises a buffer bin connected with the blast pipe and upper and lower aeration pipes respectively communicated with the buffer bin. The integrated device disclosed by