Discharge port pretreatment device for water flow treatment

The utility model discloses a discharge port pretreatment device for water flow treatment, which comprises coamings symmetrically distributed on two sides, positioning components are fixedly arranged outside the coamings, sealing plates are fixedly arranged at two ends of the two coamings, water baffles are welded on the outer walls of the tops of the sealing plates, and a plurality of aeration discs are arranged between the two coamings. A plurality of baffle plates are fixedly arranged between the two surrounding plates, a filler rope is arranged between every two adjacent baffle plates, and the filler ropes are located above the aeration disc. According to the utility model, the aeration disc is used for supplying oxygen to the filler rope and increasing the attachment amount of microorganisms, and the baffle plate is used for prolonging the retention time of a water body, enhancing the aeration activity and improving the degradation capability; the size of equipment can be adjusted according to the sewage