GN 22 Inch Decanter Centrifuge for Africa Tank Bottom Oily Sludge Treatment
GN Separation has recently completed the manufacturing and factory testing of one GNLW554-VFD Decanter Centrifuge, which is now ready for shipment to an oil industry customer in Africa. The equipment will be used for the treatment of tank bottom oily sludge, helping the customer recover valuable oil, reduce waste volume, and improve environmental performance.

The GNLW554-VFD is one of GN Separation's 22-inch decanter centrifuge models. Designed for continuous solid-liquid separation, it provides reliable performance for demanding industrial applications such as oil sludge treatment, refinery waste processing, drilling waste management, and industrial wastewater treatment. Its variable frequency drive (VFD) system enables operators to adjust the bowl speed and differential speed according to different feed conditions, ensuring flexible operation and stable separation performance.

For tank bottom oily sludge treatment, the centrifuge is generally installed after the sludge has been conditioned through processes such as dilution, heating, or chemical treatment. Once the feed enters the rotating bowl, the strong centrifugal force separates solids from the liquid phase. The screw conveyor continuously transports the separated solids toward the discharge ports, while the clarified liquid is discharged separately for further processing or oil recovery. This continuous operating principle allows the centrifuge to maintain stable performance even when processing challenging oily sludge streams.
One of the major advantages of decanter centrifuge technology is its ability to reduce the volume of waste while recovering valuable resources. By efficiently separating oil from solids and water, operators can recover reusable oil, reduce transportation and disposal costs, and minimize the environmental impact of hazardous oily sludge. This makes decanter centrifuges an important part of modern oily sludge treatment systems adopted by oil producers and environmental service companies worldwide.
With years of experience in separation technology, GN Separation provides complete solutions for oily sludge treatment, including pre-treatment modules, chemical dosing systems, decanter centrifuges, three-phase centrifuges, transfer pumps, and modular processing systems. Depending on the characteristics of the sludge and project requirements, GN engineers can recommend customized process configurations to achieve the desired treatment objectives.
The successful delivery of this GNLW554-VFD decanter centrifuge further demonstrates GN Separation's growing presence in the African market and its commitment to providing reliable separation equipment for the global oil and gas industry. GN will continue to develop efficient and dependable separation technologies to help customers improve operational efficiency, recover valuable resources, and meet increasingly stringent environmental requirements around the world.







