Environment-friendly sewage treatment pipeline

The utility model discloses an environment-friendly sewage treatment pipeline in the technical field of sewage treatment devices, which comprises an outer pipeline, an inner pipeline is sleeved in the outer pipeline, the inner pipeline comprises a dirt removal section and a water purification section, the dirt removal section is communicated with the water purification section, and the dirt removal section is communicated with the water purification section. The periphery of the dirt removing section is fixedly connected with a single-spiral auger blade, the outer side of the single-spiral auger blade is attached to the inner wall of the outer pipeline, and filtering holes are evenly formed in the single-spiral auger blade; a plurality of water purification holes are uniformly formed in one side, far away from the decontamination section, of the water purification section, and the periphery of the water purification section is coated with a filter membrane; first water stop plates are arranged at the two ends