CNPC Oilfield Waste Water Reuse

Owner: China National Petroleum Corporation
Project Location: Panjin City, Liaoning Province, China
Water treatment capacity: 1500 cubic meters / day
Wastewater type: Oilfield flotation effluent
Production commencement date: November 2025
Scope of work: detailed design, equipment supply, installation and commissioning

In this project, Rockerhill used its patented technology to conduct a pilot project on the process of deep treatment of flotation water from PetroChina's Liaohe Oilfield and reinjection it into groundwater.

Our process includes: flotation effluent → conditioning and homogenization → two-stage oil removal → precision filtration → deep oxidation/sterilization → softening/descaling → terminal security filtration → reinjection pump pressurization → groundwater reinjection well