Environment-friendly sewage treatment equipment for civil engineering

The invention relates to the technical field of sewage treatment, in particular to environment-friendly sewage treatment equipment for civil engineering. The equipment comprises a pipeline, a hollow pipe and a blowdown device; the blowdown device comprises a connecting shaft, and the connecting shaft is divided into quartered cavities through crossed distribution of partition plates and filter through plates; the filter plate comprises a first sieve plate and a second sieve plate which can slide, and a third sieve plate and a fourth sieve plate which are fixedly arranged; the outer side wall of the connecting shaft is further provided with a lock hole, and the first sieve plate and the second sieve plate are each provided with a telescopic sleeve column. A moving groove is formed in the inner side wall of the pipeline corresponding to the sleeve column, one end of the sleeve column is matched with the lock hole and can be separated from the lock hole, and the other end can slide in the moving groove; a limiti