The emergency sewage treatment projects at Sudayan and Dayan River in the urban area of Lu 'an City have a total treatment capacity of 11,500 tons per day (including 8,000 tons per day for Branch River 2 and 3,500 tons per day for Branch River 3 of Dayan River). The emergency management covering two emergency response stations in the relevant areas of Sudayan and Dayanhe within the main urban area of Lu 'an City is short-term leasing and operation and maintenance.