Dazu District carried out river dredging. While vigorously implementing the sewage outfall regulation, river dredging and ecological restoration were also implemented. They dredged 4.7 kilometers in severe sections of river bottom sludge it was used silt curtains and dredgers, it was also carried out the sterilization and disinfection of bank slopes, and construction of submerged dams were implemented. Then they planted 30,000 square meters of aquatic plants such as cannabis, parasol, iris, and water lilies near the river,it can effectively absorb nitrogen and phosphorus to notify water pollutants, which can not only purify water quality, improve ecology, but also play a role in optimizing and beautifying the environment.
