Project Overview: This project is a pilot project for the construction of aquatic ecological civilization in Longhai City. The main construction contents include the river channel renovation, ecological protection, the protection of the main canal and the surrounding tributaries of the Chongfu Bridge to Yundu Bridge along the “Xixi One Dragon” in Longhai City. The construction of ecological landscape along the both sides of the channel and the construction of pollution interception and pollution control, etc. The main process adopts "AO+MBR", and the designed effluent quality meets the Grade A standard. A total of 17 decentralized water treatment stations are built along the river channel to achieve overall improvement of water quality in the basin and effective restoration of the water ecosystem.