A GN containerised sludge dewatering system for Contaminated Soil Washing has been successfully commissioned in the Middle East to support soil remediation works involving oil-contaminated sites. The core of this system, the GNLW654-VFD dewatering centrifuge, is engineered specifically for high-throughput separation and sludge reduction.
This deployment is part of a broader soil washing treatment where oil-contaminated soil is first processed through air flotation and sedimentation tanks. The centrifuge plays a critical role in dewatering the surface floating sludge that remains after initial treatment, helping reduce the volume of hazardous waste and prepare it for further disposal or stabilization.
The GNLW654-VFD features a large bowl diameter and high-speed operation, which enables efficient separation of fine solids from slurry with variable consistency. Its VFD control system allows operators to adjust bowl and scroll speeds to match specific process needs, improving dewatering performance while reducing polymer consumption and energy costs.
Complementing the centrifuge are GN’s high-frequency fine stack vibrating screens and fine sizer stack vibrating screens. These are used earlier in the process to remove oversized particles and improve slurry quality before centrifugation. The compact, modular design of the entire system allows for fast mobilisation and ease of integration into remediation projects with space and access constraints.
This system is not limited to contaminated soil washing. It is also applicable in the treatment of drilling mud, tank bottom sludge, and similar oil-slurry mixtures where solid-liquid separation is required. The successful commissioning reflects GN’s continued support for environmental and waste reduction solutions through practical, field-ready equipment.
Photos of the deployed unit and inventory-ready systems are available upon request.