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Oily sludge generated from oilfield extraction, petroleum storage and transportation, and chemical production is highly hazardous and difficult to manage. If improperly handled, it can cause severe contamination to soil, groundwater, and surrounding ecosystems, creating significant environmental and

Oily sludge generated from oilfield extraction, petroleum storage and transportation, and chemical production is highly hazardous and difficult to manage. If improperly handled, it can cause severe contamination to soil, groundwater, and surrounding ecosystems, creating significant environmental and compliance challenges. To address this growing issue, Desen Environmental has developed a professional Oily Sludge Washing System, delivering a highly efficient and environmentally responsible solution for the harmless treatment and resource recovery of oily sludge waste.

Designed with a refined closed-loop treatment process, the system supports industrial ecological restoration while helping oilfield and chemical enterprises achieve environmental compliance and sustainable waste management.

Integrated Modular Design for Complete Oily Sludge Treatment

Desen’s oily sludge washing system adopts a modular integrated structure, covering the entire treatment process, including:

• Oily sludge pretreatment

• Multi-stage washing and separation

• Oil–water–solid separation

• Wastewater purification and recycling

Each module works seamlessly within a coordinated process flow, ensuring smooth operation and flexible configuration based on project size and treatment capacity requirements.

For oily sludge with high viscosity, strong hydrocarbon adhesion, and difficult separation characteristics, the equipment utilizes a specialized washing process to precisely strip oil contaminants from sludge and soil particles. Through optimized treatment technology, the system efficiently separates oil, solids, and water, delivering stable treatment performance that consistently meets environmental standards.

Closed-Loop Operation for Cleaner, Safer Treatment

The equipment operates in a fully enclosed environment, from material feeding to final discharge, effectively preventing odor emissions, material leakage, and secondary pollution risks.

An integrated water recycling system purifies washing wastewater for reuse, significantly reducing freshwater consumption while achieving zero wastewater discharge. This environmentally friendly design fully complies with hazardous waste disposal regulations and environmental protection standards.

Stable Performance with Low Operating Costs

Built for long-term outdoor industrial operation, the system features corrosion-resistant and wear-resistant components that ensure excellent durability under demanding conditions.

Its high level of automation simplifies operation, reduces manual intervention, and lowers maintenance complexity and labor costs. The treatment process is designed for operational efficiency, making it easier for facilities to maintain stable performance while controlling operational expenses.

After treatment:

• Recovered oil can be recycled and reused, improving resource efficiency

• Treated solid materials can be safely backfilled or reused in compliance with regulations

• Waste volume is significantly reduced, lowering transportation and disposal costs

A Reliable Solution for Sustainable Industrial Waste Management

With its mature treatment technology, modular flexibility, and strong environmental performance, the Desen Oily Sludge Washing System effectively solves the challenges of oily sludge disposal.

Widely applicable to oilfields, refineries, petrochemical plants, and industrial waste treatment projects, the system supports green industrial transformation, environmental remediation, and sustainable resource recovery.

Desen Environmental provides smarter, cleaner, and more efficient oily sludge treatment solutions—helping industries achieve both environmental compliance and economic value recovery.