1. During the dry season and early rainfall, sewage and initial rainfall enter the downstream sewage pipeline network through interception pipes. Overflow control equipment is turned off to prevent sewage from flowing out and also to prevent river water from flowing back.
2. As the rainfall continues, and the overflow and pollution removal equipment begins to work. In the later stage,the pollutants in the rainwater are intercepted in the well, and the rainwater overflows and is discharged into the receiving water body after treatment.
3. In extreme rainstorm weather, overflow control equipment is turned on for emergency flood discharge.
4. After the rainfall, the intercepted pollutants are discharged into the sewage pipe, it can also use garbage lifting devices or manual cleaning operation an maintenance.
