Successful Delivery of Oily Wastewater Treatment Equipment by SINOKLE for Guinean Iron Ore Heavy Oil Power Plant
On the evening of August 20, 2025, the complete set of oily wastewater treatment equipment was officially shipped after passing factory inspections. This system was custom-built by SINOKLE for a heavy oil power plant in Guinea, Africa, which supports a large iron ore project in the region.
The treatment system has a daily capacity of 240 cubic meters. It utilizes an advanced combined process: two-stage CDFU (Cyclonic Dissolved Gas Flotation Unit) and CDOF (Cyclonic Dissolved Ozone Flotation Unit), creatively overcoming the challenges of treating highly complex oily wastewater. It ensures continuous green energy for the power plant, which is critical for developing the world's largest undeveloped iron ore reserve.
Challenges: Fluctuations of Flow Volume caused by the Rainy Season and Complex Pollutants
Located in the southeastern part of Guinea, the iron ore is the world's largest undeveloped iron ore reserve and has the highest quality. The wastewater coming from its ancillary heavy oil power plant contains complex components. The components mainly include two categories: (1) oily pollutants such as heavy oil and diesel (high viscosity petroleum-based substances). (2). suspended solids such as silt and iron oxide dust. Additionally, the wastewater is characterized by high COD and heavy metal contamination. During the rainy season, the wastewater flow volume experiences severe fluctuations. This variability significantly increases the difficulty of treatment. Conventional treatment processes are hard to consistently bringing this complex wastewater up to discharge standards. In addition, the disposal of sludge generated from the treatment process incurs high costs.
Innovation: Three-Stage Collaborative Process Breaks Through Bottleneck
SINOKLE developed a targeted three-stage treatment solution: a two-stage CDFU system combined with CDOF catalytic ozone oxidation.
Enhanced Separation: The two-stage CDFU flotation unit employs 5-30μm micro-nano bubbles for physical demulsification, rapidly separating petroleum pollutants (removal rate >95%) with strong impact resistance and adaptability to fluctuations of flow rate.
Pic 1. Skid-mounted CDFU Quality Inspection
In-depth Oxidation Degradation: The CDOF catalytic ozone oxidation unit utilizes multi-stage catalytic technology to increase the removal rate of refractory organic COD to over 80%, while effectively breaking down heavy metal complexes.
Pic 2. Skid-mounted CDOF Quality Inspection
Efficiency: Completed from Contract Signing to Equipment Delivery within 3 Months
SINOKLE's project team leveraged extensive modular design expertise to complete equipment manufacturing and testing within just three months of contract signing—30% faster than the industry average. The skid-mounted design enabled direct sea shipment and rapid on-site assembly, significantly reducing overseas construction costs.
Value: Win-win Situation for Environmental Protection and Economic Benefit
The process demonstrates exceptional environmental performance, reducing sludge production by 90% and cutting annual operating costs by 40%. The CDOF unit achieves quadruple the ozone utilization efficiency compared to conventional technologies, resulting in significant energy savings. Upon commissioning, the project will assist in recycling wastewater and minimize the wastewater discharge, setting a new benchmark for sustainable development in the global mining industry.
Pic 3. Equipment Loaded and Shipped
Mr. Jaylen Jian, General Manager of SINOKLE, stated: "This collaboration demonstrates the technical capabilities and delivery reliability of China's environmental protection equipment enterprises. In recent years, we have successfully delivered multiple overseas wastewater treatment projects in Bangladesh, Chad, Congo, Sierra Leone and other countries. Moving forward, we will continue to deepen our cooperation with global energy and mining giants, using innovative technologies to protect the global ecosystem."
