Environmental engineering sewage recovery device

The utility model relates to the technical field of sewage recovery devices, and discloses an environmental engineering sewage recovery device which comprises a treatment device body, a water inlet pipe and a filter screen, the filter screen is movably connected with the treatment device body through an adjusting mechanism, and the adjusting mechanism comprises a rotating shaft, a connecting plate, an upper sliding groove, a spring, a clamping block and a limiting groove. The connecting plate is fixedly connected with the treatment device body, the rotating shaft is rotatably connected with the connecting plate, the filter screen is fixedly connected with the rotating shaft, an upper sliding groove is formed in the front wall face of the connecting plate, the clamping block is slidably connected with the upper sliding groove, and the clamping block slides out of the limiting groove and completely enters the upper sliding groove by pulling the clamping block to slide upwards in the upper sliding groove and com