Integrated Oil Sludge Treatment and Oil Recovery Solutions
Oil sludge is rarely a uniform material. Tank-bottom sludge, refinery sludge, drilling waste, lagoon sludge, and oil-contaminated soil can vary widely in oil content, water content, solids size, viscosity, aging, salinity, and emulsion stability. GN New Chem develops project-specific treatment routes that combine oil sludge chemicals, thermal washing or conditioning, screening, centrifugal separation, water treatment, and on-site technical optimization.
Typical Customer Challenges
- Highly stable oil-water-solid emulsions and aged sludge with poor mobility.
- Variable feed composition that causes unstable separation and equipment loading.
- High residual oil in solids, poor water clarity, and excessive final waste volume.
- Chemical selection that is disconnected from heating, mixing, retention time, and separation equipment.
GN Integrated Solution Approach

- Feed characterization and laboratory screening using representative sludge samples.
- Selection of separating agents, emulsion breakers, cleaning agents, gel breakers, dewatering flocculants, pH modifiers, and water-treatment chemicals.
- Process development covering heating, dilution, conditioning, washing, screening, three-phase separation, solids dewatering, and separated-water treatment.
- Integration with GN Solids Control oil sludge treatment systems, shale shakers, decanter centrifuges, three-phase separators, tanks, pumps, and modular process equipment.
- Pilot or field trials to optimize dosage, temperature, mixing energy, residence time, and equipment settings.
Value to the Customer
- Higher recoverable oil yield and improved oil-water-solid separation.
- Lower residual oil and moisture in the discharged solids.
- Cleaner separated water for reuse, further treatment, or compliant disposal.
- Reduced waste volume and a clearer route from laboratory testing to full-scale operation.
Typical Applications
Refinery sludge, crude-oil tank-bottom sludge, drilling waste, oilfield pit or lagoon sludge, oily sediment, oil-contaminated soil washing, and industrial oily waste.

Send GN New Chem representative samples, available analysis data, current process information, equipment configuration, treatment targets, and operating constraints. Our team will review the application and propose a practical testing and evaluation plan covering chemicals, process conditions, equipment integration, and field implementation.