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The oily sludge treatment system is an environmental protection solution designed for oil-containing sludge generated in the petroleum industry, such as tank bottom sludge and drilling waste mud. Its core function is to achieve the separation of oil, water, and solids, along with resource recovery. The system typically begins with heating and stirring for demulsification, followed by centrifugal separation or filter pressing technology to extract recoverable crude oil. The remaining sludge undergoes chemical conditioning and solidification/stabilization, and once it meets standards, can be safely landfilled or utilized as a resource. The separated wastewater is further purified for discharge or reuse. By enabling the recovery of crude oil for economic benefit and addressing the pollution caused by oily sludge, this system serves as key equipment for compliant operations in the petroleum industry.
Product Photos

| Step | Module | Function |
|---|---|---|
| ① | Vacuum / Pump Transfer | Collects and feeds high‑viscosity sludge into the system |
| ② | Pre‑Mixing & Heating | Heats sludge to 60–70°C, mixes with dilution water and chemicals to reduce viscosity |
| ③ | Coarse Shaker / Crushing | Removes large solids (stones, aggregates) and crushes particles |
| ④ | Fine Shaker (Screening) | Removes solids down to 100–200 microns – protects downstream centrifuges |
| ⑤ | Chemical Dosing | Precisely injects demulsifiers and flocculants to optimize separation |
| ⑥ | Three‑Phase Decanter Centrifuge | Core separation unit – simultaneously separates oil, water, and solids at high G‑force |
| ⑦ | Disc Centrifuge (Optional) | Polishes recovered oil to BS&W < 3% for saleable quality |
| Component | Function |
|---|---|
| Vacuum / Sludge Transfer Pump | Collects and feeds high‑viscosity oil sludge |
| Pre‑Mixing & Heating Tank | Heats and homogenizes sludge with chemicals |
| Coarse Shaker | Removes large solids and aggregates |
| Crushing Unit | Reduces particle size for downstream processing |
| Fine Shaker (Shale Shaker) | Removes solids down to 100–200 microns |
| Chemical Dosing Unit | Injects demulsifiers, flocculants, and treatment chemicals |
| Two‑Phase Decanter Centrifuge | Separates solids from liquid |
| Three‑Phase Decanter Centrifuge | Core unit – separates oil, water, and solids simultaneously |
| Disc Centrifuge (Optional) | Polishes recovered oil to saleable quality |
| Configuration | Best For | Key Advantage |
|---|---|---|
| Skid‑Mounted | Field operations, rapid deployment, emergency response | Flexible, mobile, lower investment |
| Containerized | Remote locations, international shipping, turnkey solution | Plug‑and‑play, reduced footprint, easy transport |
| Vehicle‑Mounted | Emergency response, multi‑site operations | Highest mobility |
Q1 What is an oil sludge treatment system?
A It is an integrated processing system that treats oil-based sludge from tank cleaning, drilling, refining, and spills – separating it into recoverable oil, reusable water, and environmentally compliant solid waste.
Q2 What is the typical oil recovery rate?
A The system can recover 80% or more of the mineral oil content. The recovered oil is saleable with BS&W as low as 3–5%.
Q3 What is the oil content on discharged solids?
A Typically 1–3% oil on solids discharged from the three-phase decanter centrifuge. With disc centrifuge polishing, oil quality can reach BS&W < 3%.
Q4 Is the water reusable?
A Yes. Recovered water contains approximately 1% oil and can be reused in the pre‑mixing stage, significantly reducing fresh water consumption.
Q5 What are the available configurations?
A Skid‑mounted for field flexibility, containerized for easy transport and plug‑and‑play deployment, and vehicle‑mounted for emergency response.
Q6 What heating methods are available?
A Electric, steam, and thermal oil – flexible for different site conditions.
Q7 What is the processing capacity range?
A From 5 m³/h to 60 t/h, with custom configurations available.
Q8 How many operators are required?
A Only 2 operators per shift – the system is PLC automated.
Q9 What types of oil sludge can be treated?
A Crude oil tank sludge, refinery waste, drilling site sludge, oil spills, contaminated soil, and oil-based drill cuttings.
Q10 Is the system environmentally compliant?
A Yes. Solids meet disposal standards, water is recycled with zero discharge, and the process is enclosed to prevent VOC emissions.
Q11 What is the delivery lead time?
A Standard configurations 8–12 weeks. Custom configurations may take longer.
Q12 Is the system certified?
A Yes – API and ISO certified, meeting international industry standards.
Q13 Can the system be expanded later?
A Yes – the system can be upgraded to a larger processing station with increased capacity.
Q14 What spare parts do you provide?
A Shaker screens, centrifuge components, chemical dosing pumps, heating elements, and all wear parts.
Q15 Do you provide installation and commissioning support?
A Yes – drawings, installation guidance, and optional on‑site commissioning support.