Background：Haizi River is an important water source for the eastern towns of Ningyang County. In the past, due to the long-term direct discharge of industrial sewage into the river from nearby chemical industry parks, the difficulty of urban domestic sewage treatment plants in disposing of high-concentration chemical wastewater, and the incomplete diversion of rainwater and sewage due to dilapidated pipe networks, the Haizi River has Haizi River was once polluted.
Solution
The comprehensive utilization project of reclaimed water in Ningyang Economic Development Zone adopts the EPC+O model, with an operation period of 20 years. The reclaimed water treatment scale is 20,000m³/d in the near term and 50,000m³/d in the long term, using “coagulation sedimentation + sand filter + U-RO” The process is connected with the existing reclaimed water pipeline and serves the Chemical Industry Park of Ningyang County Development Zone.
