PVC (polyvinyl chloride) blow-off pipeline for sewage treatment

The utility model provides a PVC (polyvinyl chloride) blow-off pipeline for sewage treatment, which relates to the field of blow-off pipelines and comprises a pipe plug, a branch pipe, a secondary filter, a sewage pipe and a sewage pipe. A sewage pipe is arranged on the outer side of the sewage pipe at a dip angle, the sewage pipe is communicated with the sewage pipe, and a filter plate with the dip angle consistent with that of the sewage pipe is arranged at the communicating position of the sewage pipe and the sewage pipe and used for filtering sewage; a branch pipe is arranged between the included angle of the sewage pipe and the sewage pipe, the two ends of the branch pipe are communicated with the sewage pipe and the sewage pipe respectively, a secondary filter part is inserted into the branch pipe, the two ends of the secondary filter part extend outwards compared with the sewage pipe and the sewage pipe, sewage is guided and arranged, and the problem of pipeline blockage caused by the fact that the sew